CN204419034U - A kind of horizontal directional drilling machine power head device - Google Patents

Abstract

A power head device for a horizontal directional drilling rig, comprising a core tube, a hydraulic chuck is arranged on the upper part of the core tube, an oil supply mechanism is arranged on the lower part of the core tube, and a power mechanism is installed between the oil supply mechanism and the hydraulic chuck, The power mechanism is equipped with a box set outside the core tube. The hydraulic chuck includes a shell, and slips are arranged in the shell, and an expansion sleeve is set outside the slips, and a rubber sleeve is set outside the expansion sleeve. A fixed sleeve is provided between the rubber sleeve and the housing, and a hydraulic oil pressure chamber is formed between the fixed sleeve and the rubber sleeve. The utility model uses the rubber sleeve arranged outside the expansion sleeve to push the slips to clamp the drill pipe inwardly and deforms; the rubber sleeve returns to its original state under the action of elastic force by using the return spring arranged between the expansion sleeve and the slips , so as to achieve the purpose of loosening the drill pipe; using the oil supply mechanism arranged at the lower part of the core tube, the oil supply process is simplified, the pressure of the pressure oil is increased, and the pressure oil distributed to the power head can reach 8MPa-12MPa.

Description

A horizontal directional drilling rig power head device

technical field

The utility model relates to geological exploration equipment, in particular to a power head device of a horizontal directional drilling machine.

Background technique

At present, various drilling rigs distribute pressure oil to the power head, that is, when the traditional method distributes pressure oil to the power head, it can only reach 4MPa-6MPa, and the pressure is low. At the same time, due to the unreasonable design of the mechanical structure of the existing drilling rig , It is easy to cause poor oil supply process.

Contents of the invention

The technical problem to be solved by the utility model is to propose a horizontal directional drilling rig power head device with reasonable design, which can simplify the oil supply process and improve the pressure oil pressure.

The technical problem to be solved by the utility model is achieved through the following technical scheme, a horizontal directional drilling rig power head device, which is characterized in that: it includes a core tube that is sheathed on the drill rod of the drilling rig, and a hydraulic chuck is arranged on the upper part of the core tube , the lower part of the core tube is provided with an oil supply mechanism, a power mechanism is installed between the oil supply mechanism and the hydraulic chuck, the power mechanism is provided with a box set outside the core tube, and the hydraulic chuck includes The casing is integrally arranged. There are several slips for clamping the drill pipe in the casing. There are expansion sleeves outside the slips. A return spring is installed between the expansion sleeves and the slips. The large deformation inside pushes the slips to clamp the rubber sleeve of the drill pipe. A fixed sleeve is provided between the rubber sleeve and the shell, and a hydraulic oil pressure chamber is formed between the fixed sleeve and the rubber sleeve. The pressure oil inlet connected to the pressure chamber; the oil supply mechanism includes a sleeve that is fixedly connected with the box body and fitted outside the core tube, an upper sealing device is provided between the upper part of the sleeve and the core tube, and the lower part of the sleeve There is a lower sealing device between the core tube and a high-pressure oil pressure chamber between the lower sealing device and the upper sealing device, and a hydraulic oil pressure passage connecting the high-pressure oil pressure chamber and the pressure oil inlet on the core tube. An oil pipe joint communicating with the high-pressure oil pressure chamber is arranged on the outer wall of the barrel.

The technical problem to be solved by the utility model can be further realized through the following technical solutions. The upper sealing device includes an upper seal set outside the core tube, and a seal set outside the core tube is provided between the upper seal and the oil pipe joint. O-shaped seal ring I, on the upper sleeve of the upper seal, there is a grease nipple I for lubrication.

The technical problem to be solved by the utility model can be further realized by the following technical scheme, there are two grease nozzles I evenly distributed along the circumference of the sleeve.

The technical problem to be solved by the utility model can be further realized through the following technical proposals. The lower sealing device includes a lower seal set outside the core tube, and a seal set outside the core tube is provided between the lower seal and the oil pipe joint. O-ring seal II, grease nipple II for lubrication is opened on the lower sleeve of the lower seal.

The technical problem to be solved by the utility model can be further realized by the following technical scheme, there are two grease nipples II evenly distributed along the circumference of the sleeve.

Compared with the prior art, the utility model utilizes the rubber sleeve arranged outside the expansion sleeve, which can push the slips to clamp the drill pipe by inward expansion and deformation; Under the action, the rubber sleeve can be restored to its original shape, so as to achieve the purpose of loosening the drill pipe; the oil supply mechanism arranged at the lower part of the core tube can simplify the oil supply process, increase the pressure of the pressure oil, and distribute the pressure to the power head. Oil reaches 8MPa-12MPa.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

A power head device for a horizontal directional drilling rig, comprising a core tube that is sheathed on the drill pipe of the drilling rig, a hydraulic chuck is arranged on the upper part of the core tube, an oil supply mechanism is arranged on the lower part of the core tube, and the oil supply mechanism and the hydraulic chuck A power mechanism 2 is installed between them, and the power mechanism 2 is provided with a casing 3 set outside the core tube. The hydraulic chuck includes a casing 1 integrally arranged with the casing. The slips 17 of the drill pipe are covered with an expansion sleeve 14, and a return spring 15 is installed between the expansion sleeve 14 and the slips 17. The expansion sleeve 14 is equipped with a slip clamp that can expand inwards and deform to push The rubber sleeve 16 holding the drill pipe is provided with a fixed sleeve between the rubber sleeve 16 and the housing 1, and a hydraulic oil pressure chamber 13 is formed between the fixed sleeve and the rubber sleeve, and a valve communicating with the hydraulic oil pressure chamber is provided on the housing. Pressure oil inlet; the oil supply mechanism includes a sleeve 4 that is fixedly connected with the box body and is set outside the core tube. An upper sealing device is provided between the upper part of the sleeve 4 and the core tube, A lower sealing device is provided between the tubes, a high-pressure oil pressure chamber is provided between the lower sealing device and the upper sealing device, and a hydraulic oil pressure channel 12 connecting the high-pressure oil pressure chamber and the pressure oil inlet is provided on the core tube. An oil pipe joint 5 communicating with the high-pressure oil pressure chamber is provided on the outer wall of the tank. The return spring is a cylindrical spring. The power mechanism is also equipped with a hydraulic motor, which rotates at a high speed after the hydraulic motor is connected to the pressure oil, thereby driving the inner shaft gear of the power mechanism to rotate at a high speed, and then driving the large gear meshed with the shaft gear and set on the core tube to rotate, thereby The core tube drives the hydraulic chuck to rotate at high speed.

The upper sealing device includes an upper seal 10 set on the outside of the core tube, an O-ring I9 set on the outside of the core tube is provided between the upper seal and the oil pipe joint, and an upper sleeve of the upper seal is provided with Grease nipple I11 for lubrication; there are two grease nipples evenly distributed along the circumference of the sleeve; the lower sealing device includes a lower seal 6 set outside the core tube, between the lower seal 6 and the oil pipe joint 5 There is an O-shaped sealing ring II8 set outside the core tube, and a grease nipple II7 for lubrication is provided on the lower sleeve of the lower seal; two grease nipples II are evenly distributed along the circumference of the sleeve. The high-pressure oil enters the hydraulic oil pressure channel of the core pipe from the oil pipe joint through the high-pressure oil pressure chamber, and then flows into the hydraulic oil pressure chamber along the pressure oil inlet, so that the rubber sleeve expands inward and deforms to push the slips to clamp the drill pipe, and the slips After the drill pipe is clamped, the working drilling can be carried out. When the drilling rod needs to be released, the hydraulic control valve is manipulated and placed in the oil return position, so that under the elastic force of the return spring, the hydraulic oil returns to the oil tank of the drilling rig, thereby realizing the action of releasing the drilling rod.

Claims (5)

1. a horizontal directional drilling machine power head device, it is characterized in that: comprise the outer core pipe be enclosed within borer drill rod, oild chuck is provided with on the top of core pipe, oil supply mechanism is provided with in the bottom of core pipe, between oil supply mechanism and oild chuck, actuating unit is installed, actuating unit is provided with the casing be sleeved on outside core pipe, described oild chuck comprises the housing be wholely set with casing, the slips of some holding drill pipes is provided with in housing, ringfeder is set with outside slips, between ringfeder and slips, back-moving spring is installed, be set with outside ringfeder and inwardly swell distortion can promote the rubber sleeve of slips holding drill pipe, fixed cover is provided with between rubber sleeve and housing, hydraulic fluid pressure chamber is formed between fixed cover and rubber sleeve, housing is provided with the pressure oil import communicated with hydraulic fluid pressure chamber, described oil supply mechanism comprises the sleeve be sleeved on outside core pipe that to be fixedly connected with casing, upper sealing device is provided with between the top of sleeve and core pipe, lower sealing device is provided with between the bottom of sleeve and core pipe, hydraulic oil pressure chamber is provided with between lower sealing device and upper sealing device, core pipe is provided with the hydraulic fluid pressure passage being communicated with hydraulic oil pressure chamber and pressure oil import, the outer wall of sleeve is provided with the oil connection be communicated with hydraulic oil pressure chamber.

2. horizontal directional drilling machine power head device according to claim 1, it is characterized in that: described upper sealing device comprises the upper seal be sleeved on outside core pipe, be provided with the O RunddichtringO I be sleeved on outside core pipe between upper seal and oil connection, the upper square socket of upper seal has the grease nipple I of lubrication.

3. horizontal directional drilling machine power head device according to claim 2, is characterized in that: described grease nipple I is evenly distributed with 2 along sleeve circumference.

4. horizontal directional drilling machine power head device according to claim 1, it is characterized in that: described lower sealing device comprises the lower seal be sleeved on outside core pipe, be provided with the O RunddichtringO II be sleeved on outside core pipe between lower seal and oil connection, the lower square socket of lower seal has the grease nipple II of lubrication.

5. horizontal directional drilling machine power head device according to claim 4, is characterized in that: described grease nipple II is evenly distributed with 2 along sleeve circumference.