CN101845937A

CN101845937A - All-hydraulic power head

Info

Publication number: CN101845937A
Application number: CN 201010163366
Authority: CN
Inventors: 侯庆国; 冯少春; 王玉吉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-06
Filing date: 2010-05-06
Publication date: 2010-09-29

Abstract

The invention provides an all-hydraulic power head belonging to the field of the top drive device of piling machinery. The structure of the all-hydraulic power head comprises a sliding plate, a hydraulic motor, a planetary reducer, a pinion, a power head box body, a pivoting support, a radial bearing, a gearwheel and a barrel, wherein the sliding plate is provided with the power head box body, the central position in the power head box body is provided with the barrel; the barrel and the gearwheel are arranged together; the left side and the right side of the barrel are vertically and symmetrically provided with the hydraulic motor, the planetary reducer and the pinion which are successively connected; the pinion is meshed with the gearwheel; the inner wall of the barrel is provided with a power output spline which is provided with a location hole; and the outer wall of the barrel is provided with a lubricating device with a lubrication radial bearing. Compared with the prior art, the all-hydraulic power head of the invention can realize large-torque rotation output at low speed for driving a drilling rig to rotate and lifting the drilling rig; a steel wire rope respectively bypasses an upper pulley and a lower pulley to pressurize and lift the power head so as to cause the power head to slide along a mast to realize full-hole feeding.

Description

All-hydraulic power head

(1) technical field

The present invention relates to a kind of top driving device of piling machinery, specifically a kind of piling machinery all-hydraulic power head that is applied to pile hole constructions such as building foundation, bridge foundation and speedway or high-speed railway basis.

(2) background technology

At present, the top-drive of piling machinery is used comparatively general, and of a great variety, but is Motor Drive machinery formula three ring gear structures, and the restriction of gearratio and appearance and size can not realize high pulling torque output, can not satisfy worker's Technical Development Requirement.

(3) summary of the invention

Technical assignment of the present invention is at the deficiencies in the prior art, and a kind of all-hydraulic power head of realizing the low-speed big gyroscopic output is provided.

The technical solution adopted for the present invention to solve the technical problems is:

All-hydraulic power head, comprise slide plate, hydraulic motor, planetary reducer and pinion, the unit head casing, pivoting support, radial bearing, gear wheel, the core pipe, slide plate is provided with a unit head casing, one group of pivoting support is equipped with in the centre in the unit head casing, the core pipe that two groups of radial bearings and one are set up by pivoting support and radial bearing, pivoting support is equipped with the gear wheel that is set together with the core pipe outward, the vertical hydraulic motor that connects successively that is symmetrically arranged with in the left and right sides of core pipe, planetary reducer and pinion, pinion and gear wheel mesh together.Have power output spline on the inwall of above-mentioned core pipe, offer locating hole on the spline, the lubricating arrangement of lubricated radial bearing is housed on the outer wall of core pipe; Above-mentioned slide plate also is provided with unit head lifting gear and unit head coupling arrangement.

Hydraulic pressure can drive the hydraulic motor high speed rotary, drive the pinion revolution after planetary reducer slows down, pinion drives the gear wheel revolution, and gear wheel drives the core pipe and rotates, the power output spline that the core pipe drives on the inwall again rotates, thereby realizes the slow-speed of revolution, high pulling torque output.

Above-mentioned all-hydraulic power head, the lubricating arrangement of its lubricated radial bearing comprises that being contained in being used on the core tube wall drives the eccentric wheel of unidirectional oil pump, unidirectional oil pump is installed on the dead ahead of unit head casing, lubrication oil in the casing can be expelled on two groups of radial bearings of core pipe top, be used for lubricated two groups of radial bearings.

Above-mentioned all-hydraulic power head, its unit head lifting gear comprises top sheave and the lower sheave that is connected in the slide plate upper and lower respectively by bearing pin, and top sheave is used to promote unit head, and when lower sheave was used to creep into, the unit head pressurization was used.

Above-mentioned all-hydraulic power head, its unit head coupling arrangement comprises the slips that connects with mast on the slide plate, liner plate is housed on the slips and is used to regulate the adjustment screw of liner plate and guide clearance.Slide plate connects with mast by slips, the upset moment of torsion that produces when reaction torque that produces when being used to resist unit head and reversing and unit head lifting, the liner plate of wear-resistant cast iron material is housed on the slips, this liner plate has wear-resisting, self-lubricating function, in use with the liner plate immersion oil or on guide rail, smear the friction factor that grease can both reduce liner plate and guide rail greatly, make the unit head lifting steady more freely.Adjust screw and can regulate the gap of slips liner plate and guide rail.

Above-mentioned all-hydraulic power head, connect by link plate between its slide plate and the unit head casing, unit head casing and link plate are connected by four bearing pins up and down, pulling down two following bearing pins can turn over the unit head casing under loop wheel machine is auxiliary and turn 90 degrees, like this can be at the floor mounted drilling tool, the danger of having avoided the high-altitude to install.Gravity that the lower cover of unit head casing bears and load can be delivered on the slide plate by link plate, have improved the stressing conditions of lower cover set bolt, help improving the unit head supporting capacity.

All-hydraulic power head of the present invention compared with prior art, the beneficial effect that is produced is: this unit head can be realized the low-speed big gyroscopic output, be widely used in the low-speed big top and drive the class multi purpose pile frame, be used to drive drilling tool revolution and lifting drilling tool, unit head is connected with the mast guide rail by the slide plate slips, wire rope is walked around up and down pulley respectively and can be pressurizeed and promote unit head, make unit head at the slide plate slips along the mast slippage, realize that full hole feeds, grease pump can be to the bearing forced feed lubrication, can effectively prolong bearing application life.

(4) description of drawings

Accompanying drawing 1 is a main TV structure schematic diagram of the present invention;

Accompanying drawing 2 is the plan structure schematic diagram of Fig. 1;

Accompanying drawing 3 is the right TV structure schematic diagram of Fig. 1;

Accompanying drawing 4 is that the A of Fig. 2 is to structural representation.

Among the figure, 1, slide plate, 2, hydraulic motor, 3, the third-level planetary reductor, 4, pinion, 5, casing, 6, pivoting support, 7, bearing, 8, gear wheel, 9, the core pipe, 10, eccentric wheel, 11, unidirectional oil pump, 12, link plate, 13, lower cover, 14, set bolt, 15, top sheave, 16, lower sheave, 17, slips, 18, liner plate, 19, bearing pin, 20, screw, 21, bearing pin, 22, spline, 23, locating hole.

(5) specific embodiment

Explain below below in conjunction with accompanying drawing 1-4 all-hydraulic power head of the present invention being done.

Shown in accompanying drawing 1-4, all-hydraulic power head of the present invention, its structure comprises slide plate 1, it is overlooked and is, and " [" shape, this structure help link plate 12 and install, and the centre of gyration that can guarantee unit head casing 5 satisfies the construction diameter requirement apart from the distance of mast.Top sheave 15 and lower sheave 16 are individually fixed in the upper and lower of slide plate 1, and top sheave 15 and lower sheave 16 all link by bearing pin 21 and slide plate 1, and top sheave 15 and lower sheave 16 can freely rotate around bearing pin 21.

It is as a whole that slips 17 relies on bolt and slide plate 1 to be fixed into, and adjusts the gap that screw 20 can be regulated liner plate 18 with the guide rail of slips 17.Casing 5 is a box-shaped weldering box, and this structure can symmetry be installed hydraulic motor 2 and third-level planetary reductor 3, utilizes the space to greatest extent, realize the payment that input pinion 4 and gear wheel 8 mesh radial loads, this structure is upright simple in addition, and the welding procedure distortion is little, is easy to welding.Link plate 12 is the transition apparatus that unit head casing 5 and slide plate 1 connect, link plate 12 is fixed on the slide plate 1 by bearing pin 19, by bolt on unit head casing 5, link plate 12 tightly gets together with lower cover 13, the load of lower cover set bolt 14 be can effectively share, the sealing of unit head casing 5 and the supporting capacity of raising unit head casing 5 are beneficial to.The unit head core pipe 9 that has power output spline 22 supports by the pivoting support 6 of lower end and two dish radial ball bearings 7 of upper end, formation can separate the individual part of rotation with unit head casing 5, the top of spline 22 has locating hole 23, the driving force of core pipe 9 derives from gear wheel 8, core pipe 9, gear wheel 8 is in the same place by bolt with the outer ring of pivoting support 6, form moving component, the inner ring of pivoting support 6 and lower cover 13 pass through bolt, form stationary parts, two dish radial bearings 7 of core pipe 9 upper ends are used to set upright core pipe 9, be used to resist the radial load of core pipe, pivoting support 6 and radial bearing 7 put the degree of freedom constraint of core pipe 9 in place like this, become the revolving body that can bear axial force and radial load.

Claims

1. all-hydraulic power head, comprise slide plate (1), hydraulic motor (2), planetary reducer (3), pinion (4), unit head casing (5), pivoting support (6), radial bearing (7), gear wheel (8) and core pipe (9), it is characterized in that, slide plate (1) is provided with a unit head casing (5), one group of pivoting support (6) is equipped with in the interior centre of unit head casing (5), the core pipe (9) that two groups of radial bearings (7) and one are set up by pivoting support (6) and radial bearing (7), the outer gear wheel (8) that is set together with core pipe (9) that is equipped with of pivoting support (6), the vertical hydraulic motor (2) that connects successively that is symmetrically arranged with in the left and right sides of core pipe (9), planetary reducer (3) and pinion (4), pinion (4) and gear wheel (8) mesh together;

Have power output spline (22) on the inwall of above-mentioned core pipe (9), offer locating hole (23) on the spline (22); The lubricating arrangement of lubricated radial bearing (7) is housed on the outer wall of core pipe (9);

Above-mentioned slide plate (1) also is provided with unit head lifting gear and unit head coupling arrangement.

2. all-hydraulic power head according to claim 1, it is characterized in that, the lubricating arrangement of lubricated radial bearing (7) comprises the eccentric wheel that is used to drive unidirectional oil pump (11) (10) that is contained on core pipe (9) outer wall, and unidirectional oil pump (11) is installed on the dead ahead of unit head casing (5).

3. all-hydraulic power head according to claim 1 is characterized in that, the unit head lifting gear comprises top sheave (15) and the lower sheave (16) that is connected in slide plate (1) upper and lower respectively by bearing pin (21).

4. all-hydraulic power head according to claim 1 is characterized in that, the unit head coupling arrangement comprises the slips (17) that slide plate (1) upward connects with mast.

5. all-hydraulic power head according to claim 4 is characterized in that, liner plate (18) is housed on the slips (17) and is used to regulate liner plate (18) and the adjustment screw (20) of guide clearance.

6. all-hydraulic power head according to claim 1 is characterized in that, slide plate (1) links with link plate (12) earlier, and link plate (12) is again by four bearing pins (19) and unit head casing (5) link up and down.