CN106735522B

CN106735522B - A kind of tube cutting machine built in well casing

Info

Publication number: CN106735522B
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: 2018-06-08
Anticipated expiration: 2037-01-20
Also published as: CN106735522A

Abstract

The invention discloses the tube cutting machine built in a kind of well casing, including retarder, pedestal, shaft coupling, main shaft, knife assembly and extension bar；The pedestal is made of upper cover and sleeve；The main shaft is equipped with the shaft forgings of active friction wheel for middle part；The knife assembly is made of support plate, cutting cutter shaft and cutting blade；The main shaft is set on the center of knife assembly, and the active friction wheel of main shaft is touched with cutting the driven friction pulley of cutter shaft.The present invention is set on using by retarder at the top of well casing, and knife assembly is set in well casing, and passes through shaft coupling and extension bar connection, implement in well casing inner cut-out well casing, implement the stage excavation of the earthwork conducive to excavator, keep the intact of precipitation well point, continue conducive to base pit dewatering.

Description

A kind of tube cutting machine built in well casing

Technical field

The present invention relates to civil engineering base pit dewatering technical fields, pre-buried more than 15 meters of deep basal pit for precipitation depth The cutting of well casing, the tube cutting machine built in especially a kind 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 pit Claim Groundwater Control, i.e., it will come meet supporting construction and foundation pit excavation and construction with lowering of watertable in Foundation Pit Construction It asks, the level of ground water of construction environment is higher, and the depth of foundation requirement is deeper, and difficulty of construction is bigger.

The prior art implements base pit dewatering by being provided with precipitation well point in foundation pit, is to beat a bite deep-well first, in depth Setting and the isometric well casing of well depth in well fill gravel composition sand drain, in well casing between the inner wall of deep-well and the outer wall of 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 and is worn by well lid to implementing in well casing Precipitation.The problem is that since the earth excavation of deep basal pit is all that layering carries out, i.e., it, will before every layer of earth excavation Phreatic table in the floor height foundation pit drops to the absolute altitude at the bottom layer by layer hereinafter, implementing earth excavation by excavator, due to more in foundation pit Place is provided with precipitation well point, hinders the normal operation of excavator, and well casing is overwhelmed, miscues or well casing is dug what is broken by excavator Phenomenon occurs repeatedly, and precipitation well point is caused to be scrapped, and since the deep pit digging that layering carries out not yet is completed, base pit dewatering need to also be after It is continuous to carry out, complement deep-well, the secondary setting precipitation well point in foundation pit it can only cause human and material resources and the wave of time in foundation pit Take.

Invention content

The purpose of the present invention is the tube cutting machine in view of the deficiencies of the prior art and built in a kind of well casing of offer, the present invention It is set at the top of well casing using by retarder, knife assembly is set in well casing, and pass through shaft coupling and extension bar connection, implemented In well casing inner cut-out well casing, implement the stage excavation of the earthwork conducive to excavator, keep the intact of precipitation well point, dropped conducive to foundation pit Water continues.

Realizing the specific technical solution of the object of the invention is：

A kind of tube cutting machine built in well casing, feature include retarder, pedestal, shaft coupling, main shaft, cutter group Part and extension bar；

The pedestal is made of upper cover and sleeve, and upper lid is equipped with speed reducer base, inner wall is equipped with internal thread, outer wall is equipped with and pulls Hand hole, sleeve are equipped with external screw thread and jackscrew, and sleeve is engaged through external screw thread with the internal thread of upper cover；

The main shaft is equipped with upper axis for one end, the other end is equipped with lower axle, middle part is equipped with the shaft forgings of active friction wheel；

The knife assembly is made of support plate, cutting cutter shaft and cutting blade, and support plate is equipped with base bearing for the center of circle, The disc of three kidney slots is peripherally laid with around the center of circle, cutting cutter shaft is equipped with the upper diameter of axle for one end, the other end is equipped with down The diameter of axle and external screw thread, middle part are equipped with the shaft forgings of driven friction pulley, and support plate is two disks, and is arranged in parallel up and down, cuts cutter shaft It is three, is distributed in three kidney slots of support plate, and the upper diameter of axle of cutting cutter shaft and the lower diameter of axle is respectively arranged on support plate In kidney slot, cutting blade is set on the lower diameter of axle of cutting cutter shaft and is engaged and fastened with external screw thread by nut；

The main shaft is set on the center of knife assembly, and the upper axis and lower axle of main shaft are respectively arranged on two up and down In the base bearing of support plate, the active friction wheel of main shaft is touched with cutting the driven friction pulley of cutter shaft；

Retarder is set on the speed reducer base of pedestal, and shaft coupling is two pieces, is respectively arranged on output terminal and the lengthening of retarder On bar and main shaft between the end of axis and extension bar；

The busbar of the support plate kidney slot is involute relative to the center of circle of support plate；The active friction wheel and Driven friction pulley is circular cone shape.

The present invention using by retarder be set on well casing at the top of, by knife assembly be set on well casing in, and pass through shaft coupling and Extension bar connects, and implements in well casing inner cut-out well casing, implements the stage excavation of the earthwork conducive to excavator, keeps precipitation well point It is intact, continue conducive to base pit dewatering.

Description of the drawings

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is the structure diagram in A-A sections of Fig. 1；

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

Specific embodiment

Refering to Fig. 1, Fig. 2, the present invention includes retarder 1, pedestal 2, shaft coupling 3, main shaft 4, knife assembly 5 and adds Stock 6；

The pedestal 2 is made of upper cover 21 and sleeve 22, and upper cover 21 is equipped with speed reducer base 211, inner wall is equipped with internal thread 212nd, outer wall is equipped with driving hole 213, and sleeve 22 is equipped with external screw thread 221 and jackscrew 222, and sleeve 22 is through external screw thread 221 and upper cover 21 internal thread 212 engages；

The main shaft 4 is equipped with upper axis 42 for one end, the other end is equipped with lower axle 43, middle part is equipped with active friction wheel 41 Shaft forgings；

The knife assembly 5 is made of support plate 51, cutting cutter shaft 52 and cutting blade 53, and support plate 51 is set for the center of circle There is base bearing, the disc of three kidney slots 511 is peripherally laid with around the center of circle, cutting cutter shaft 52 is equipped with upper axis for one end Diameter, the other end are equipped with the lower diameter of axle and external screw thread 521, middle part are equipped with the shaft forgings of driven friction pulley 522, and support plate 51 is two disks, And be arranged in parallel up and down, cutting cutter shaft 52 is three, is distributed in three kidney slots 511 of support plate 51, and cuts cutter shaft 52 The upper diameter of axle and the lower diameter of axle be respectively arranged in the kidney slot 511 of support plate 51, cutting blade 53 be set on cutting cutter shaft 52 lower axle Diameter is simultaneously engaged and fastened with external screw thread 521 by nut；

The main shaft 4 is set on the center of knife assembly 5, and the upper axis 42 and lower axle 43 of main shaft 4 are respectively arranged on In the base bearing of upper and lower two support plate 51, the active friction wheel 41 and the driven friction pulley 522 of cutting cutter shaft 52 of main shaft 4 touch And；

Retarder 1 is set on the speed reducer base 211 of pedestal 2, and shaft coupling 3 is two pieces, is respectively arranged on the output terminal of retarder 1 With on extension bar 6 and main shaft 4 between the end of axis 42 and extension bar 6.

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

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

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

Refering to Fig. 1, Fig. 2, Fig. 3, the present invention is used for the deep foundation pit precipitation engineering of stage excavation, and first having to will be in this layer of foundation pit Phreatic table drop to the absolute altitude at the bottom layer by layer hereinafter, i.e. before this layer of earth excavation, the installation present invention in well casing 7, by well casing 7 The absolute altitude at the bottom layer by layer is cut to, after the stage excavation that excavator implements the earthwork, continues the dewatering operation of deep basal pit.

The assembling of the present 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；Retarder 1 is installed on the speed reducer base 211 of upper cover 21；With reference to the absolute altitude choosing at this layer of phreatic table layer bottom Select the extension bar 6 of corresponding length；After main shaft 4 and knife assembly 5 are assembled, and it will be lengthened using first shaft coupling 3 One end of bar 6 is connect with 42 end of upper axis of main shaft 4；Extension bar 6 is held, and knife assembly 5 is gradually placed in well casing 7 It is interior, until the other end of extension bar 6 is close to the suitable for reading of well casing；Retarder 1 is placed in 7 top of well casing, and use together with upper cover 21 The other end of extension bar 6 is connect by second shaft coupling 3 with the output terminal of retarder 1；Upper cover 21 is placed on sleeve 22, and is turned Dynamic upper cover 21, makes the internal thread 212 of upper cover 21 be engaged with the external screw thread 221 of sleeve 22；Finally, by the power supply of electric cabinet with subtracting Fast device 1 connects.

The work of the present invention refering to Fig. 1, Fig. 2, Fig. 3, starts retarder 1 by electric cabinet and works, the output of retarder 1 End drives main shaft 4 to rotate, and by the master of main shaft 4 by first shaft coupling 3, extension bar 6 and second shaft coupling 3 Dynamic friction wheel 41 is transferred to the driven friction pulley 522 of cutting cutter shaft 52, and driving cutting blade 53 is cut from the inner wall implementation of well casing 7 It cuts；

The feed process of cutting blade 53 is as follows, is engaged in special spanner in the driving hole 213 of 21 outer wall of upper cover, rotation Upper cover 21, as the internal thread 212 of upper cover 21 rotates on the external screw thread 221 of sleeve 22, upper cover 21 is relative to sleeve 22 along axis To raising, the output terminal of retarder 1 is same together with main shaft 4 by first shaft coupling 3, extension bar 6 and second shaft coupling 3 Step raising, the active friction wheel 41 of main shaft 4 squeeze the driven friction pulley 522 of cutting cutter shaft 52, make the upper of cutting cutter shaft 52 The lower diameter of axle extends to the outside in the kidney slot 511 of support plate 51 along 511 busbar of kidney slot of involute, so as to fulfill cutting blade 53 completion feeds simultaneously cut off well casing from inner wall；

Retarder 1 of the invention and main shaft 4 and knife assembly 5 are removed, with the soft match input well casing 7 of iron wire binding It is interior, finally, the well casing 7 of partition from underground is pulled out, after the stage excavation that excavator implements the earthwork, continues deep basal pit Dewatering operation.

Claims

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

The main shaft（4）Upper axis is equipped with for one end（42）, the other end be equipped with lower axle（43）, middle part be equipped 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 equipped with base bearing, and three kidney slots are peripherally laid with around the center of circle（511）Disc, cut cutter shaft（52）For one end The lower diameter of axle and external screw thread are equipped with equipped with the upper diameter of axle, the other end（521）, middle part be equipped with driven friction pulley（522）Shaft forgings, support Disk（51）It for two disks, and is 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 cut 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）Set on cutting cutter shaft（52）The lower diameter of axle and by nut and external screw thread（521）It engages and fastens；

The main shaft（4）Set on knife assembly（5）Center, main shaft（4）Upper axis（42）And lower axle（43）Point It She Yu not upper and lower two support plate（51）Base bearing in, main shaft（4）Active friction wheel（41）With cutting cutter shaft（52）'s Driven friction pulley（522）It touches；

Retarder（1）Set on pedestal（2）Speed reducer base（211）On, shaft coupling（3）For two pieces, it is respectively arranged on retarder（1）'s Output terminal and extension bar（6）And main shaft（4）Upper axis（42）End and extension bar（6）Between.

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

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