CN202824757U

CN202824757U - Oil pressure power head

Info

Publication number: CN202824757U
Application number: CN 201220434503
Authority: CN
Inventors: 陆坤良
Original assignee: HANGZHOU SUJIE MACHINERY CO Ltd
Current assignee: HANGZHOU SUJIE MACHINERY CO Ltd
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-03-27
Anticipated expiration: 2022-08-29

Abstract

The utility model relates to an oil pressure power head and aims at providing an oil pressure power head which is simple and compact in structure, small in occupied space and low in cost. According the technical scheme, the oil pressure power head comprises a swing mechanism driving a main shaft to rotate, a clamping mechanism installed at the bottom end of the main shaft and used for clamping a drill bit, and a feeding mechanism controlling feeding motions of the main shaft. The oil pressure power head is characterized in that the feeding mechanism is an oil pressure feeding mechanism and comprises a box body, a piston and a hydraulic pressure station, wherein the box body is fixed on a power head seat body and is provided with a piston cavity, the piston is placed in the piston cavity and capable of making rectilinear motions in the piston cavity, and the hydraulic pressure station delivers hydraulic oil to two ends of the piston cavity through an oil tube so as to apply driving force to the piston; the piston is further provided with a through hole which runs through the whole piston in the length direction of the piston, and the main shaft is located in the through hole in a rotatable mode through an axial positioning structure; and power connection between the top end of the main shaft and the swing mechanism is achieved through a spline component.

Description

A kind of hydraulic power head

Technical field

The utility model relates to a kind of metalworking equipment, the specifically unit head on the rig.

Background technology

The horizontal unit head that general Special drilling equipment is used is dimerous by slide unit+drill head; Slide unit is realized feeding control, and gyration is realized to drill head by the motor transferring power.Manual feed mode is arranged, automated manner is also arranged.

The unit head of conventional borehole equipment, mechanical variable speed device is all adopted in its slide unit feeding transmission and drill bit revolution transmission; The rack-driving structure is adopted in slide unit feeding transmission wherein more, causes drive mechanism huger, and it is large to take up room, and consumed power is large, has also strengthened manufacturing cost.

The utility model content

The purpose of this utility model is the deficiency that overcomes in the above-mentioned background technology, and a kind of improvement of unit head is provided, and that this unit head should have is simple and compact for structure, little and lower-cost characteristics take up room.

The technical solution adopted in the utility model is: a kind of hydraulic power head, comprise drive shaft rotation slew gear, be installed in the main shaft bottom and be used for the clamping device of clamping drilling bit and the feed mechanism of control axis feeding motion; It is characterized in that described feed mechanism is the oil pressure feed mechanism, comprise the casing that is fixed on the unit head pedestal and is shaped with plunger shaft, insert in the plunger shaft and can the piston of plunger shaft cathetus motion and by oil pipe respectively in plunger shaft two ends conveying liquid force feed piston is applied the Hydraulic Station of driving force; Described piston also is shaped with the through hole that connects whole piston at length direction, and described main shaft is rotatably positioned in this through hole by axial positioning structure; The top of described main shaft also realizes that by spline assembly and described slew gear power is connected.

In the described axial positioning structure, nut by and the thread matching structure of main shaft the bearing spacer envelope between two bearings, two bearings is pressed solidly the stairstepping external peripheral surface that fixes on the main shaft left side; Then force in outer ring and the bearing spacer of aforesaid two bearings with the locking nut of piston left end screw-internal thread fit, two bearings are positioned in the shoulder hole on the piston left side, realize that thus main shaft is fixed on the purpose of the left end of piston.

Described spline assembly comprises the splined shaft that is rotatably positioned the spline housing on casing and is fixed on the main shaft top and matches with aforementioned spline housing by bearing; Described spline housing is also introduced the power that slew gear transmits by the primary shaft belt pulley that is installed in its top.

Described Hydraulic Station comprises the magnetic valve of oil pump and commutation usefulness.

Described hydraulic power head also disposes a F.F., the worker advances and rewind down switching mechanism; This mechanism comprises a mark post parallel with main shaft and that be fixedly connected with by piston clip lock ring and collar bush, be arranged on flow speed control valve on the casing, be fixed by screws on the mark post and with flow speed control valve on the flow speed control valve shifting block stir the F.F. station conversion block that cooperates and be fixed on the piston clip lock ring with the stroke dog of travel switch top interference fit.

Described F.F. station conversion block is stirred with the flow speed control valve shifting block by a conversion block screw lining and is cooperated, and this conversion block screw lining is rotatably positioned on F.F. station conversion block by the conversion block screw.

Operation principle of the present utility model is: motor 1 by electrical machine belt pulley 3, belt 29, primary shaft belt pulley 4, spend the splined shaft 11 on strong cover 9, main shaft top that main shaft 22 is passed in gyration, realize the gyration of main shaft.And the implementation of feed motion is: the power fluid force feed that Hydraulic Station provides enters the right side of plunger shaft 16 through the fuel feed hole on oil pipe, the casing 23, and piston 21 is promoted left; The hydraulic oil in piston 21 left sides enters Hydraulic Station through spill port, flow speed control valve 33, the oil pipe on the casing 23, realizes piston feed motion left.After the commutation of the magnetic valve on the Hydraulic Station, hydraulic oil just enters the left side of plunger shaft through the spill port on oil pipe, the casing 23, piston 21 is promoted to the right, and the hydraulic oil on piston 21 right sides enters Hydraulic Station through fuel feed hole, the oil pipe on the casing 23, realizes that piston moves right.

The beneficial effects of the utility model are: in conjunction with as a whole, so that structural Case is outer compact, take up room significantly reduces the oil pressure feed mechanism that adopts, thereby has significantly saved resource, has also reduced manufacturing cost feeding and revolution.

Description of drawings

Fig. 1 is main TV structure schematic diagram of the present utility model.

Fig. 2 is plan structure schematic diagram of the present utility model (omitting motor and belt wheel part).

Fig. 3 is left TV structure schematic diagram of the present utility model.

The specific embodiment

In the hydraulic power head as shown in the figure, the slew gear of drive shaft 22 rotation comprises that being installed in motor 1(motor is installed on the electric machine support 2) electrical machine belt pulley 3 on the output shaft, be installed in the primary shaft belt pulley 4 of spindle nose and the belt 29 that cooperates with aforementioned two belt wheels; Be installed in the clamping device that the main shaft bottom is used for clamping drilling bit and then comprise drill bushing 20; Said mechanism all with the power head structure of existing rig roughly the same.

Improvement of the present utility model is to have adopted the oil pressure feed mechanism; In this mechanism, the casing 23 that is shaped with plunger shaft 16 is fixed on the unit head pedestal; Arrange a piston that matches 21 in the plunger shaft, this piston can be at the length direction rectilinear motion of plunger shaft; Also be shaped with a through hole 15 on the piston, this hole connects whole piston at length direction, and main shaft is rotatably positioned in this through hole by axial positioning structure; The top of main shaft (being right-hand member among the figure) also realizes that by spline assembly and slew gear power is connected.In the described spline assembly, spline housing 9 is rotatably positioned on casing by bearing, and electric machine support is fixed on the casing, and described primary shaft belt pulley is installed in the right-hand member of spline housing, introduces thus driving moment; 11 of the splined shafts that matches with aforementioned spline housing are fixed on main shaft top (being right-hand member among the figure).In addition, also be provided with one by oil pipe respectively at the Hydraulic Station (conventional mechanism in figure omit) of plunger shaft two ends conveying liquid force feed piston is applied driving force, described Hydraulic Station comprise oil pump and the commutation usefulness magnetic valve.

In the described axial positioning structure, the outer circumference surface on the main shaft left side is made into stairstepping left large and right small, after bearing spacer 25 between two bearings 24, two bearings was set on this position, nut 17 pressed solidly two bearings envelopes by the thread matching structure with main shaft and fixes on the main shaft left side; With the locking nut 27 of piston left end screw-internal thread fit, then by top, the outer ring compression set of aforesaid two bearings being positioned at the mode of the shoulder hole on the piston left side, main shaft is fixed on the left end of piston.The effect of main shaft sheath 28 is the gaps between capping protection piston left end end face and the main shaft, prevents that foreign matter from entering.

Described hydraulic power head also disposes a F.F., the worker advances and rewind down switching mechanism; In this mechanism, the mark post 8 parallel with main shaft is fixedly connected with collar bush 12 by piston clip lock ring 6; The flow speed control valve 33 in access oil pipe loop is fixedly installed on the casing by screw; F.F. station conversion block 30 be fixed by screws in (can adjust the position at mark post 8) on the mark post and its position corresponding to the flow speed control valve shifting block 32 on the flow speed control valve, so that contact cooperation (contacting cooperation with the flow speed control valve shifting block by conversion block screw lining 34) in working order with the flow speed control valve shifting block.35 of stroke dogs that cooperates with travel switch 36 are fixed on the piston clip lock ring 6 by screw rod, nut.Conversion block screw lining 34 is fixed on the F.F. station conversion block 30 by conversion block screw 31, and stirs with the flow speed control valve shifting block under rotatable state and cooperate (to reduce wear); Flow speed control valve shifting block 32 is integrated with flow speed control valve 33, can drive the flow speed control valve rotation, carries out speed and regulates.

F.F.-worker advances-conversion of rewind down: and piston 21 drives the main shaft F.F. (mark post is also and then mobile) of turning left under the pressure of hydraulic oil, after being fixed on conversion block screw lining 34 on the mark post and stirring flow speed control valve shifting block 32, control with regard to the input quantity to hydraulic oil immediately, thereby realized the conversion (work speed is by the knob adjustment on the flow speed control valve) that F.F.-worker advances; Then piston continuation drive main shaft worker advances, stroke dog 35 on piston clip lock ring 6 is met travel switch 36(and is only shown travel switch 36, all the other travel switches omissions) namely send the signal of telecommunication after, switching solenoid valve makes piston continue drive main shaft fast toward moving right again, has realized that the worker advances-conversion of rewind down.

Obviously, can realize subsection hole-drilling by changing flow speed control valve.

Claims

1. hydraulic power head, comprise drive shaft (22) rotation slew gear, be installed in the main shaft bottom and be used for the clamping device of clamping drilling bit and the feed mechanism of control axis feeding motion; It is characterized in that described feed mechanism is the oil pressure feed mechanism, comprise the casing (23) that is fixed on the unit head pedestal and is shaped with plunger shaft (16), insert in the plunger shaft and can the piston (21) of plunger shaft cathetus motion and by oil pipe respectively in plunger shaft two ends conveying liquid force feed piston is applied the Hydraulic Station of driving force; Described piston also is shaped with the through hole (15) that connects whole piston at length direction, and described main shaft is rotatably positioned in this through hole by axial positioning structure; The top of described main shaft also realizes that by spline assembly and described slew gear power is connected.

2. a kind of hydraulic power head according to claim 1, it is characterized in that: in the described axial positioning structure, nut (17) by and the threaded engagement of main shaft bearing spacer (25) envelope between two bearings (24), two bearings is pressed solidly the stairstepping external peripheral surface that fixes on the main shaft left side; With the locking nut (27) of piston left end screw-internal thread fit, then force in outer ring and the bearing spacer of aforesaid two bearings, two bearings are positioned in the shoulder hole on the piston left side.

3. a kind of hydraulic power head according to claim 2, it is characterized in that: described spline assembly comprises the splined shaft (11) that is rotatably positioned the spline housing (9) on casing and is fixed on the main shaft top and matches with aforementioned spline housing by bearing; Described spline housing is also introduced the power that slew gear transmits by the primary shaft belt pulley that is installed in its top.

4. a kind of hydraulic power head according to claim 3 is characterized in that: described Hydraulic Station comprises the magnetic valve of oil pump and commutation usefulness.

5. a kind of hydraulic power head according to claim 4, it is characterized in that: described hydraulic power head also disposes a F.F., the worker advances and rewind down switching mechanism; This mechanism comprises a mark post (8) parallel with main shaft and that be fixedly connected with by piston clip lock ring (6) and collar bush (12), be arranged on flow speed control valve (33) on the casing, be fixed by screws on the mark post and with flow speed control valve on flow speed control valve shifting block (32) stir the F.F. station conversion block (30) that cooperates and be fixed on the piston clip lock ring with the stroke dog (35) of travel switch (36) top interference fit.

6. a kind of hydraulic power head according to claim 5, it is characterized in that: described F.F. station conversion block is stirred with the flow speed control valve shifting block by a conversion block screw lining (34) and is cooperated, and this conversion block screw lining is rotatably positioned on F.F. station conversion block by conversion block screw (31).