The large diameter pile pipe connector
One, technical field
The utility model relates to the building pile foundation engineering plant equipment, is specifically related to the large diameter pile pipe connector.
Two, background technology
At present, building foundation adopts the more and more of large-section in-situ concrete pile, uses the large diameter pile pipe also more and more to be widely used as the stake machine of pile-forming equipment, as vibrating hammer stake machine.The stake pipe that this class stake machine uses is rolled by steel plate, and the stake pipe will bear huge pressure, pulling force and fierce the vibration beating, pull out in the process; In addition, the stake pipe often will extend or brachymemma when transition transportation or construction according to actual needs.Therefore, can the stake length of tube be adjusted easily, and can connection fast reliable, very big to cost, duration and the security implication of construction.Stake pipe connection is at present generally adopted two types, the one, directly be welded to connect, existence causes welded steel pipe to be difficult to straightening, the unwarrantable defective of weldquality because of open-air welding condition is simple and crude, cause tube drawing that the problem that fracture accident is managed in stake takes place often, and the welding work efficiency is low; The 2nd, adopt flange to connect, exist the attachment bolt of flange need account for than large space, make flange periphery protrusion stake pipe outer a lot, resistance when both increasing immersed tube greatly, increased the defective that concrete consumes again greatly, in addition, have eccentric moment during also because of tube drawing, each attachment bolt is stressed extremely inhomogeneous, and attachment bolt breaks easily one by one.
Three, summary of the invention
The purpose of this utility model provide a kind of mount and dismount convenient and swift, can adjust a stake pipe Len req rapidly, adapt to the dither that produces when breaking the pile pulling pipe and the large diameter pile pipe connector of immense pressure and pulling force.
For realizing above purpose, the utility model large diameter pile pipe connector comprises and is fixed on the right-angled trapezium boss circle that cuts stake pipe union end and following section stake and manage the union end periphery, two circular arc length less than the thick steel ring of circular arc of semicircle girth be located at clamping otic placode outside the thick steel ring of the circular arc two ends, each clamps otic placode and is provided with 2~4 through holes, and through hole is put on bolt; Described cut stake pipe link centering up and down after, two right-angled trapezium boss are formed the isosceles trapezoid boss; The thick steel ring of described circular arc inboard is the isosceles trapezoid groove, can match with the isosceles trapezoid boss, and the angle that described isosceles trapezoid groove two hypotenuses are become is less than the angle of these isosceles trapezoid boss two hypotenuses; By screwing isosceles trapezoid boss two hypotenuses that isosceles trapezoid groove two hypotenuses that bolt makes two thick steel rings of circular arc compress a tube end, utilize hypotenuse to produce axial compression, two-section stake pipe closely is associated in together.
Said structure large diameter pile pipe connector has following beneficial effect:
1, connect reliably, the axial compression that hypotenuse produces is close together two-section stake pipe, and because of very close to each other between the stake pipe, dither makes a union place that a high temperature ablation take place when avoiding driving piles; Joint can effectively transmit the huge pull out force of beating.
2, compare flange and connect,, significantly reduce the joint and protrude the outer width of pipe, reduce the resistance when breaking the pile pulling pipe, economical with materials because of not needing at flange periphery bolt hole.
3, compare welding and connect, its easy installation and removal is quick, as required rapid adjustment stake length of tube.
4, this large diameter pile pipe connector is made simply, and cost is low, and is easy to use, is beneficial to popularization.
Four, description of drawings
Fig. 1 is that the utility model large diameter pile pipe connector master looks schematic diagram.
Fig. 2 is the utility model large diameter pile pipe connector schematic top plan view
Five, the specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1~shown in Figure 2, the utility model large diameter pile pipe connector is at the connection end of following section stake pipe 1 welding one circle right-angled trapezium boss 7 (processing together when these boss roll the stake pipe in factory), also weld a circle right-angled trapezium boss 5 in the last connection end of cutting stake pipe 4, after the two-section stake tube end centering, last right-angled trapezium boss 5 and following right-angled trapezium boss 7 are formed the isosceles trapezoid boss up and down; The outside, the thick steel ring of the circular arc 6 two ends welding that circular arc length is slightly less than the band isosceles trapezoid groove of semicircle girth connects otic placode 3, is drilled with 4 through holes on each otic placode, and each through hole is put on bolt 2; The angle that described isosceles trapezoid groove two hypotenuses are become is slightly less than the angle of isosceles trapezoid boss two hypotenuses; By screwing isosceles trapezoid boss two hypotenuses that isosceles trapezoid groove two hypotenuses that bolt 2 makes two thick steel rings 6 of circular arc compress a tube end, utilize hypotenuse to produce axial compression, making up and down, two-section stake pipe closely is associated in together.