CN210396619U

CN210396619U - Big through-hole drilling machine power head suitable for RJP and MJS worker method

Info

Publication number: CN210396619U
Application number: CN201921051589.2U
Authority: CN
Inventors: 朱蓉洁
Original assignee: Jiangsu Wuxi Mineral Exploration Machinery General Factory Co Ltd
Current assignee: Jiangsu Wuxi Mineral Exploration Machinery General Factory Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-24
Anticipated expiration: 2029-07-05

Abstract

The utility model relates to a big through-hole rig unit head suitable for RJP and MJS worker method, including the box, one side rotates in the box and sets up the integral key shaft, and hydraulic motor is connected to the integral key shaft upper end, and the integral key shaft middle part sets up spline gear, and the rotation of integral key shaft opposite side sets up the main shaft, and the main shaft lower extreme sets up main shaft gear, main shaft gear and spline gear intermeshing, and the main shaft upper end sets up the slips axle through the screw thread, and slips axle periphery is provided with the slips seat. The utility model discloses a piston oppression multi-disc dish spring of annular cylinder provides enough stroke for the slip bowl, and the slip bowl produces sufficient lateral displacement through the interior inclined plane structure of its self to satisfy the synchronous of five slips and open and shut, further satisfy the clamping of major diameter drilling rod and loosen, rotational speed corner sensor, the rotational speed of real-time feedback main shaft are installed to unit head main shaft lower extreme.

Description

Big through-hole drilling machine power head suitable for RJP and MJS worker method

Technical Field

The utility model belongs to the technical field of belong to ground construction machinery equipment, a big through-hole drill unit head suitable for RJP and MJS worker method is related to.

Background

Along with the continuous improvement of various foundation pile requirements in the ground construction field, the degree of depth of stake footpath and stake constantly increases, corresponding has proposed higher requirement to the unit head of rig, the unit head of rig must satisfy the centre gripping scope that can centre gripping major diameter drilling rod, and will possess certain clamping-force, the rotational speed of unit head of rig must be stable and satisfy rotational speed and the requirement that the corner can be measured at any time, at present in the RJP and the MJS worker method of basic construction, the diameter of drilling rod all is greater than phi 140mm more, and have strict requirement to the low-speed stability of unit head rotational speed of rig, traditional construction rig or the latus rectum of unit head is less, or the rotational speed is on the high side, all be difficult to satisfy above-mentioned requirement simultaneously, the utility model overcomes the above-mentioned shortcoming, can satisfy current construction technology requirement well.

Disclosure of Invention

An object of the utility model is to provide a big through-hole area rotational speed corner shows's rig unit head suitable for RJP and MJS worker method can satisfy centre gripping major diameter drilling rod, possesses better low-speed stability, and rotational speed and corner measurable quantity at any time.

According to the utility model provides a technical scheme: a large-through-hole drilling machine power head suitable for RJP and MJS construction methods comprises a box body, wherein a spline shaft is rotatably arranged in the box body, the upper end of the spline shaft is connected with a hydraulic motor, a spline gear is arranged in the middle of the spline shaft, a main shaft is rotatably arranged on one side of the spline shaft, a main shaft gear is arranged on the periphery of the lower portion of the main shaft and is meshed with the spline gear, a slip shaft is rotatably arranged on the periphery of the upper portion of the main shaft, a disc spring gasket is arranged on the periphery of the lower portion of the slip shaft, a chuck upper shell is fixedly arranged on the periphery of the upper portion of the slip shaft, an annular piston is movably arranged in the chuck upper shell, a chuck upper shell boss is arranged in the chuck upper shell, a slip seat is rotatably arranged on the lower side of the upper portion of the piston through a bearing, the slip seat is rotatably arranged on the periphery of the upper portion of the, slips are arranged on the inner periphery of the slip seat, the slips are transversely slidably arranged in uniformly distributed clamping grooves in the upper portion of the slip shaft, the peripheries of the slips are slip inclined planes, and an oil filling hole is formed between the chuck upper shell and the piston.

As a further improvement, the slips backing plate is installed on the slips inclined plane, and the slips backing plate is the brass material, and the seizure that arouses among the avoidance slip process dies.

As a further improvement, the lower end of the spline shaft is connected with a rotating speed and rotating angle sensor.

As a further improvement of the utility model, the spring is a disc spring.

As a further improvement of the present invention, the spline shaft is rotatably mounted to the main shaft through a bearing in the box.

As a further improvement, the unit head equipartition is provided with 5 slips.

Compared with the prior art, the utility model, have following advantage:

1. the utility model has compact structure and large clamping force; the annular piston presses the disc springs to provide enough stroke for the slip seat, and the slip seat generates enough transverse displacement through the inclined plane structure of the slip seat so as to meet the opening and closing of the three slips and the clamping and loosening of the large-diameter drill rod.

2. The utility model discloses structure unit head integral key shaft lower extreme is connected with rotational speed corner sensor, the rotational speed of main shaft can feed back in real time.

3. The utility model discloses a big drive ratio's drive mode, the moment of torsion is big and possess stable low rotational speed.

4. The utility model discloses a clamping structure of 5 slips of equipartition, clamping-force is even and reliable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

In the figure 1, the device comprises a box body 1, a spline shaft 2, a motor 3, a spline gear 4, a main shaft 5, a slip shaft 6, a disc spring washer 7, a chuck upper shell 8, a chuck upper shell boss 8-1, a piston 9, a slip seat 10, a slip seat inclined plane 10-1, a disc spring 11, a main shaft gear 12, a slip 13, a slip base plate 14, an oil injection hole 15, a rotating speed and rotating angle sensor 16 and the like.

As shown in fig. 1, the utility model relates to a big through-hole rig unit head suitable for RJP and MJS worker method, including box 1, rotate in the box 1 and set up integral key shaft 2, hydraulic motor 3 is connected to integral key shaft 2 upper end, integral key shaft 2 middle part sets up spline gear 4, spline shaft 2 one side is rotated and is set up main shaft 5, main shaft 5 lower part periphery sets up main shaft gear 12, main shaft gear 12 and spline gear 4 intermeshing, main shaft 5 upper portion periphery sets up slip axle 6 through the screw thread, slip axle 6 lower part periphery sets up dish spring packing ring 7, the fixed chuck upper shell 8 that sets up in slip axle 6 upper portion periphery, remove in the chuck upper shell 8 and set up annular piston 9, be equipped with chuck upper shell boss 8-1 in the chuck upper shell 8, as annular piston 9's slip stroke upper limit. The lower side of the upper part of the annular piston 9 is rotatably provided with a slip seat 10 through a bearing, the slip seat 10 is arranged on the periphery of the upper part of the slip shaft 6, and a disc spring 11 is arranged between the slip seat 10 and the disc spring washer 7. The inner periphery of the slip seat 10 is provided with a slip seat inclined plane 10-1, slips 13 are uniformly distributed on the inner periphery of the slip seat 10, the slips 13 are transversely and slidably arranged in clamping grooves uniformly distributed on the upper portion of the slip shaft 6, and the outer periphery of the slips 13 is provided with a slip inclined plane matched with the slip seat inclined plane 10-1. An oil filling hole 15 is arranged between the chuck upper shell 8 and the piston 9.

Furthermore, a copper slip base plate 14 is arranged on the slip inclined plane on the outer side of the slip 13 and is inserted into a sliding groove of the slip seat to perform synchronous up-and-down contraction movement, and the copper material can avoid being seized due to sliding friction.

In order to feed back the rotation speed of the main shaft in real time, a rotation speed and rotation angle sensor 16 is connected to the lower end of the spline shaft 2.

The working process of the utility model is as follows:

the utility model discloses a through-hole formula chuck structure, under belleville spring's effect, normal condition is normal closed formula, and the slips is the contraction state promptly.

When the drill rod needs to be clamped, high-pressure hydraulic oil enters the oil injection hole 15, the hydraulic oil pushes the annular piston 9 to move downwards, the annular piston 9 drives the slip seat 10 to overcome the spring force of the disc spring 11 to move downwards, in the downward movement process of the slip seat 10, due to the inclined surface structure of the slip seat, the clamping groove of the slip seat 10 drives the slip base plate 14 and the slip 13 to move outwards, radial space is released, the drill rod can be placed into the through hole of the main shaft 5 at the moment, along with the release of the hydraulic oil, the actions are opposite, the slip 13 contracts along with the slip, and the drill rod is clamped.

When the drill rod needs to rotate, the hydraulic motor 3 drives the spline shaft 2 to rotate, then the main shaft 5 is driven to rotate through the pair of meshed gears, and then the slip shaft 6, the slip seat 10 and the drill rod clamped by the slips 13 are further driven to rotate together.

When it is desired to release the drill pipe, the oil inlet 15 is again filled with high pressure hydraulic oil, and the slips 13 are subsequently opened, whereupon the drill pipe can be withdrawn from the power head.

Claims

1. A large-through-hole drilling machine power head suitable for RJP and MJS construction methods comprises a box body (1) and a main shaft (5), wherein the main shaft (5) is rotatably installed in the box body (1) through a bearing, a slip shaft (6) is rotatably arranged on the periphery of the upper portion of the main shaft (5), a disc spring gasket (7) is arranged on the periphery of the lower portion of the slip shaft (6), a slip upper shell (8) is fixedly arranged on the periphery of the upper portion of the slip shaft (6), an annular piston (9) is movably arranged in the slip upper shell (8), a slip upper shell boss (8-1) is arranged in the slip upper shell (8), a slip seat (10) is rotatably arranged on the lower side of the upper portion of the piston (9) through the bearing, the slip seat (10) is rotatably installed on the periphery of the upper portion of the slip shaft (6), and a disc spring (11) is arranged between the slip seat (10) and the disc spring gasket (7, the interior week of slip bowl (10) is slip bowl inclined plane (10-1), the interior week of slip bowl (10) sets up slips (13), slips (13) lateral sliding sets up in five equal portions draw-in grooves on slip axle (6) upper portion, slips (13) periphery is the slips inclined plane, chuck epitheca (8) with it has oil filler point (15), its characterized in that to open between piston (9): rotate in box (1) and set up integral key shaft (2), motor (3) are connected to integral key shaft (2) upper end, integral key shaft (2) middle part sets up spline gear (4), integral key shaft (2) one side is rotated and is set up main shaft (5), main shaft (5) lower part periphery sets up main shaft gear (12), main shaft gear (12) with spline gear (4) intermeshing, rotational speed corner sensor (16) is connected to integral key shaft (2) lower extreme, integral key shaft (2) pass through the bearing and rotate and install in box (1).

2. A large bore drill power head suitable for use in RJP and MJS processes, as claimed in claim 1, wherein: and a slip base plate (14) is arranged on the slip inclined plane and is made of brass.

3. A large bore drill power head suitable for use in RJP and MJS processes, as claimed in claim 1, wherein: the spring is a disc spring (11).

4. A large bore drill power head suitable for use in RJP and MJS processes, as claimed in claim 1, wherein: the power head is uniformly provided with 5 slips.