Summary of the invention
At the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined is: a kind of bi-directional cement soil mixing pile machine is provided.This machine only adopts a motor and single (interior) drilling rod rotating operation of transmission system drives, can make the inside and outside two-way relatively rotation of drilling rod, realizes that the bi-directional cement soil of stake machine stirs, have simple in structurely, energy consumption is little, and cost is low, operating cost is few, and is easy to use, is suitable for characteristics such as industrial applications.
The technical scheme that the present invention solve the technical problem is: design a kind of bi-directional cement soil mixing pile machine, comprise three parts of inside and outside drilling rod that is installed in a headstock of machine upper rack, is connected and the two-way rotary drilling-head that is connected with inside and outside drilling rod with headstock, it is characterized in that described headstock only comprises a motor and a cover transmission system, described transmission system comprises reducer, shaft coupling, mud joint and casing; Casing divides two-layer up and down, and reducer is installed in the upper strata of casing, and the input of reducer is vertically installed with described motor; The mud joint is installed in the lower floor of casing, and the output shaft of mud joint lower end is connected with the upper surface of interior drilling rod; Between the upper end of the output of reducer and mud joint, shaft coupling is installed;
The drilling rod concentric locking collar is contained within the outer drilling rod in described, and the upper surface of outer drilling rod and the base plate of described casing are fixed, and can not rotate, and fixedlys connected with the housing gland of two-way rotary drilling-head in the lower surface of outer drilling rod; The lower surface of interior drilling rod is connected with the upper surface of interior drill bit;
The structure of described two-way rotary drilling-head is as follows: the upper end of described housing gland is connected with the lower end of outer drilling rod, and housing gland lower end and housing are fixed, and upper bearing (metal) is equipped with in the inboard of housing gland, and the outside of housing gland is connected with housing; Fixed cover is equipped with bevel gear on the top of interior drill bit, between gear mass of last bevel gear and the housing upper bearing (metal) is installed, and awl flank of tooth part meshes with idle wheel; Idle wheel be installed in horizontal axis on, the two ends of horizontal axis are fixed on the middle part of housing, the centre has the through hole of diameter greater than interior drill bit, interior drill bit vertically passes from this through hole; The following bevel gear engagement of the awl flank of tooth of described idle wheel part drill bit bottom simultaneously and in being sleeved on, and between the gear mass of bevel gear and the housing lower bearing is installed is down describedly gone up bevel gear, idle wheel and the transmission of three bevel gears formations of following bevel gear fixed shaft gear train; The described lower surface of bevel gear down is connected with the connector upper surface, between connector inboard and the interior drill bit inner bearing is housed, and between the connector outside and the housing outer bearing is installed; The connector lower surface is connected with outer drill bit upper surface, and the lower end of outer drill bit is passed seal cover and stretched out housing, and described seal cover sealing is installed in the lower surface of housing; Stretch out radial equipartition on the outer drill bit of housing parts and be welded with shortened cutting blade more than 2 or 2; The length that the length of drill bit is longer than the outer drill bit of concentric suit in described, and the lower end grows radial equipartition on the interior drill bit of part and is welded with long blade more than 2 or 2; The external port vertical level of described shortened cutting blade and long blade.
Compare with bi-directional cement soil mixing pile machine bi-motor (power) drive system of prior art, bi-directional cement soil mixing pile machine of the present invention has adopted single motor (power) single pole rotary drive system, structure is greatly simplified, particularly the present invention has changed in traditional rig, the old model that outer drilling rod rotates simultaneously, adopting outer drilling rod only to play a supportive role does not rotate, interior drilling rod single pole rotation, and the technology path by bevel gear system transmission shunting, in the realization, the rotation in opposite directions of outer drill bit, being the new breakthrough of bi-directional cement soil mixing pile machine theory and pattern, also is the structural innovation of a machine.Stake machine structure Design of the present invention adopts single motor single bar rotary drive system, and energy consumption significantly reduces, and structure is simplified greatly, owing to only playing a supportive role, do not rotate by outer drilling rod simultaneously, thereby reduced the friction of outer drilling rod and borehole wall mud, and further reduced power demand, significantly saved the energy.
The specific embodiment:
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof.
The bi-directional cement soil mixing pile machine of the present invention's design is (hereinafter to be referred as the stake machine, referring to Fig. 1-3), comprise by wire rope and be hung in the headstock 2 on frame 3 tops, the interior drilling rod 101 that is connected with headstock 2 and outer drilling rod 102 and 1 three parts of two-way rotary drilling-head that are connected with interior drilling rod 101 and outer drilling rod 102, it is characterized in that described headstock 2 only comprises a motor 205 and a cover transmission system, described transmission system comprises reducer 204, shaft coupling 202, mud joint 201 and casing 203; Casing is two-layer about in the of 203 minutes, and reducer 204 is installed in the upper strata of casing 203, and the input of reducer 204 is vertically installed with described motor 205; Mud joint 201 is installed in the lower floor of casing 203, and the output shaft of mud joint 201 lower ends is connected with the upper surface of interior drilling rod 101; Shaft coupling 202 is installed between the upper end of the output of reducer 204 and mud joint 201;
Drilling rod 101 concentric locking collars are contained within the outer drilling rod 102 in described, and the base plate of the upper surface of outer drilling rod 102 and described casing 203 is fixed, and can not rotate, and fixedlying connected with the housing gland 104 of two-way rotary drilling-head 1 in the lower surface of outer drilling rod 102, can not rotate; The upper surface of interior drilling rod 101 is connected with the output shaft of described mud joint 201 lower ends, and the lower surface of interior drilling rod 101 is connected with the upper surface of interior drill bit 103;
The structure of described two-way rotary drilling-head 1 is as follows: the upper end of described housing gland 104 is connected with the lower end of outer drilling rod 102, and housing gland 104 lower ends and housing 105 are fixing, and during work, 102 on outer drilling rod moves up and down, and can not rotate rotation; Upper bearing (metal) 106 is equipped with in the inboard of housing gland 104, and the outside of housing gland 104 is connected with housing 105; Fixed cover is equipped with bevel gear 107 on the top of interior drill bit 103, between gear mass of last bevel gear 107 and the housing 105 upper bearing (metal) 106 is installed, and awl flank of tooth part meshes with idle wheel; Idle wheel be installed in horizontal axis 108 on, the two ends of horizontal axis 108 are fixed on the middle part of housing 105, the centre has the through hole of diameter greater than interior drill bit 103, interior drill bit 103 vertically passes (referring to Fig. 4) from this through hole; The awl flank of tooth part of described idle wheel meshes with the following bevel gear 111 that is sleeved on interior drill bit 103 bottoms simultaneously, and between gear mass of following bevel gear 111 and the housing 105 lower bearing 112 is installed; Because described outer drilling rod 102 is fixing with housing 105, do not rotate during work, thereby upward bevel gear 107, idle wheel and 111 3 bevel gears of following bevel gear have just constituted the fixed shaft gear train transmission; The described lower surface of bevel gear 111 down is connected with connector 114 upper surfaces, between connector 114 inboards and the interior drill bit 103 inner bearing 115 is housed, connector 114 is outer survey and housing 105 between outer bearing 113 is installed, can guarantee between connector 114 and the interior drill bit 103 relative rotary motion successfully; Connector 114 lower surfaces are connected with outer drill bit 118 upper surfaces, and the lower end of outer drill bit 118 is passed seal cover 116 and stretched out housing 105, and described seal cover 116 sealings are installed in the lower surface of housing 105, and seal cover 116 does not rotate yet during work; Radial equipartition is welded with the shortened cutting blade 119 more than 2 or 2 on the described outer drill bit 118 that stretches out housing 105 parts; The length that the length of drill bit 103 is longer than the outer drill bit 118 of concentric suit in described, and the lower end grows radial equipartition on the interior drill bit 103 of part and is welded with long blade 121 more than 2 or 2; The external port vertical level (referring to Fig. 1) of described shortened cutting blade 119 and long blade 121.
The further feature of the present invention is that the length of described interior drill bit 103 is longer than the length 0.3-0.8 rice of the outer drill bit 118 of concentric suit.Shortened cutting blade 119 of the present invention and long blade 121 design quantity are during more than 3, can uniformly respectively be welded on the different axial cross section of described outer drill bit 118 and interior drill bit 103, for example, during 4 or 6 blades, be arranged on 2 or the 2 layers of axial cross section every layer of 2 or 3 blade of uniform welding (referring to Fig. 1); Again for example, during 6 or 9 blades, be arranged on 3 or the 3 layers of axial cross section 2 or 3 blades of every layer of uniform welding.
Gear of the present invention is bevel gear, and the profile of tooth of bevel gear can be straight-tooth, helical teeth or other NM profile of tooth.
In order to make described idle wheel stable drive, drill bit 103 and horizontal axis 108 contingent interference when rotating (particularly starting) in avoiding, further feature of the present invention is, on the horizontal axis 108 of interior drill bit 103 both sides, be symmetrically installed with two idle wheels, be left idle wheel 110 and right idle wheel 109, and left idle wheel 110 and right idle wheel 109 all with or be meshed with last bevel gear 107 and following bevel gear 111 respectively.Because described outer drilling rod 102 is fixing with housing 105, do not rotate during work, thereby upward bevel gear 107, right idle wheel 109, left idle wheel 110 and 111 4 bevel gears of following bevel gear have just formed stable fixed shaft gear train transmission.
In order to improve sealing effectiveness, two or two-layer sealing ring 117 are housed in the seal cover 116 of the present invention.In order to prevent that mud from entering in the described transmission system, increase the frictional force between the inside and outside drill bit, between lower end that further feature of the present invention is described outer drill bit 118 and the interior drill bit 103 seal 120 is installed.
The operating principle and the process of stake machine of the present invention are: motor 205 passes through reducer 204, shaft coupling 202 and mud joint 201 successively with power, drilling rod 101 in passing to, drill bit 103 rotations in interior drilling rod 101 drives, the rotary drilling that bores first direction in realizing stirs work.Because of interior drill bit 103 is fixedlyed connected with last bevel gear 107, interior drill bit 103 meeting drives are gone up bevel gear 107 and are rotated in the same way, through with an idle wheel of last bevel gear 107 engagements or pass through two idle wheels of right idle wheel 109 and left idle wheel 110 simultaneously, give bevel gear 111 down with transmission of power, and the direction of rotation that makes down bevel gear 111 is opposite with last bevel gear 107; And then down bevel gear 111 passes to outer drill bit 118 with this counter motion power by connector 114, and the rotary drilling that outer drill bit 118 has been finished with another direction of interior drill bit 103 switched in opposite stirs work.
Stake machine of the present invention is used for the construction of cement-soil bidirectional stirring pile, owing to only adopt a motor and a cover transmission system can realize that the outer drill bit 118 and the two-way rotary drilling of interior drill bit 103 stir work, thereby can be described as single action power bi-directional cement soil mixing pile machine.Simultaneously, the ingenious design of the gear-box of stake machine of the present invention or transmission system is below drilling rod, and outer drilling rod 102 does not rotate with housing 105 during work, has only interior drilling rod 101 to rotatablely move, thereby also can be described as single pole rotation bi-directional cement soil mixing pile machine.
Stake machine of the present invention is that gear-box (transmission system) and traditional inside and outside drill bit are made of one, be called two-way rotary drilling-head, be installed in the lower end of inside and outside drilling rod, the design feature and the kinematic principle of utilization Bevel Gear Transmission, realize the shunting of transfer motion power and route, the driving force of single motor is directly passed to interior drilling rod through reductor, the frame mode of the outer drilling rod supporting of drilling rod rotation in adopting, realized the two-way rotation work of inside and outside drill bit, form innovative technology of the present invention, opened up the new transmission form of structure of a kind of " bi-directional cement soil mixing pile machine ".Clearly, stake machine of the present invention is simple in structure, saves energy consumption, reduces cost, and it is foster convenient to install, operate and tie up.
The present invention does not address part and is applicable to prior art.