CN215292347U

CN215292347U - Novel series combined type oil cylinder direct-drive horizontal directional drilling machine

Info

Publication number: CN215292347U
Application number: CN202121576411.7U
Authority: CN
Inventors: 姜志广
Original assignee: JIANGSU DILONG HEAVY MACHINERY CO Ltd
Current assignee: JIANGSU DILONG HEAVY MACHINERY CO Ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2021-12-24
Anticipated expiration: 2031-07-12

Abstract

The utility model relates to the field of trenchless mechanical equipment, and discloses a novel series combined oil cylinder direct-drive horizontal directional drilling machine, wherein a power head of the drilling machine is directly driven to push and pull to move by using a series combined oil cylinder, the structure is simple, and the power transmission efficiency is high; the invention adopts the structure arrangement of the series combined oil cylinder, and reduces the whole length size of the combined oil cylinder and the length size of a single oil cylinder thereof by the secondary stroke superposition of the series combined oil cylinder under the condition of meeting the working requirement of the power head stroke of the drilling machine, so that the structure of the oil cylinder is more compact, the pressure instability risk caused by the longer piston rod of the oil cylinder is effectively reduced, and the working reliability of the horizontal directional drilling machine is improved.

Description

Novel series combined type oil cylinder direct-drive horizontal directional drilling machine

Technical Field

The utility model relates to a non-excavation mechanical equipment technical field, concretely relates to novel series connection combination formula hydro-cylinder directly drives directional rig of level.

Background

For safety, environmental pollution and other factors, utility pipelines such as water, electricity, gas, telephone, cable television and the like are usually laid underground, and underground utilities are buried in trenches backfilled by excavation. However, trenching is time consuming and can damage roads, structures, etc., and therefore trenchless horizontal directional drilling rigs are becoming more popular.

The existing oil cylinder direct-drive horizontal directional drilling machine adopts an oil cylinder to drive a power head to perform push-pull work, and according to the structural characteristics of the oil cylinder, in order to meet the stroke work requirement of the power head of the drilling machine, the structural length size of the oil cylinder is larger than the stroke of the power head of the drilling machine, so that the structural length size of the oil cylinder is larger, the piston rod of the oil cylinder is longer, and is easy to press to generate instability risk, and the reliability of the work of the drilling machine is not facilitated.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a novel series combined type oil cylinder direct-drive horizontal directional drilling machine, which adopts a series combined type oil cylinder structure, not only meets the stroke working requirement of a drilling machine power head through the secondary stroke superposition of the series combined type oil cylinders, but also reduces the structural length size of the combined oil cylinder and the structural length size of a single oil cylinder, so that the oil cylinder structure tends to be more compact, meanwhile, the pressure instability risk caused by longer oil cylinder piston rods is also effectively reduced, and the working reliability of the drilling machine is improved.

In order to achieve the purpose, the invention provides the following technical scheme: a novel series combined type oil cylinder direct-drive horizontal directional drilling machine comprises a primary oil cylinder B1, two secondary oil cylinders B2 and two secondary oil cylinders B3 which are identical in structure and function, and a drilling machine power head.

The piston rod of the primary oil cylinder B1 is fixedly connected to a girder of the drilling machine, the two ends of the secondary oil cylinder B2 and the secondary oil cylinder B3 are connected with the primary oil cylinder B1 and the power head of the drilling machine, and the secondary oil cylinder B2 and the secondary oil cylinder B3 are symmetrically arranged by taking the primary oil cylinder B1 as the center.

Drawings

FIG. 1 is a schematic diagram of the stroke and the structural length of a single oil cylinder;

FIG. 2 is a schematic diagram of secondary stroke superposition and structural length dimension of the series combined cylinder;

FIG. 3 is a schematic view of the structure of the present invention;

fig. 4 is a schematic top view of the present invention;

in the figure: 1. a cylinder B1; 2. A cylinder B2; 3. A cylinder B3; 4. A power head of a drilling machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, for convenience of comparing and describing the structural length dimensions of the series combined cylinder and the single cylinder, the cylinder structures all adopt the same reference dimension, and the stroke of the power head of the drilling machine is set to be L, then the stroke of the cylinder a is set to be L, the superposed stroke of the series combined cylinder is set to be L, the stroke of the primary cylinder B1 is set to be 2L/3, the strokes of the secondary cylinders B2 and B2 are set to be L/3, Δ 1 is the length reference dimension of the difference between the stroke of the cylinder and the length of the cylinder barrel, the extension length Δ 1 of the piston rod in the contraction state, and the relationship between the structural length dimension of the series combined cylinder and the structural length dimension of the single cylinder in the extension state is obtained according to the above data and the structural arrangement shown in the figure as follows:

LA=2L+2△1 （a）

LB1=4L/3+2△1 (b）

LB2=LB3=2L/3+2△1 （c）

wherein, the formula (a) is the structural length dimension of the oil cylinder A in the extension state, (B) is the structural length dimension of the series combined type primary oil cylinder B1 in the extension state, and (c) is the structural length dimension of the series combined type secondary oil cylinders B2 and B3 in the extension state. The overall structural length of the series combined oil cylinder is equal to that of the primary oil cylinder B1, and the structural length of the oil cylinder A in the extension state is 2L/3 longer than that of the series combined oil cylinder in the extension state; the structural length dimension of the A oil cylinder in the extension state is 4L/3 longer than that of the two-stage oil cylinders B2 and B3 in the extension state. In conclusion, the serial combined oil cylinder has size advantages in length and size.

Referring to fig. 3-4, a novel series-connected combined type oil cylinder direct-drive horizontal directional drilling machine adopts a series-connected combined type oil cylinder, and comprises a primary oil cylinder B1 (1), a secondary oil cylinder B2 (2), a secondary oil cylinder B3 (3) and a drilling machine power head (4), wherein the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) have the same structure and function, a piston rod of the primary oil cylinder B1 (1) is fixedly connected to a girder of the drilling machine, two ends of the secondary oil cylinder B2 (2) and two ends of the secondary oil cylinder B3 (3) are respectively connected with the primary oil cylinder B1 (1) and the drilling machine power head (4), and the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) are symmetrically arranged by taking the primary oil cylinder B1 (1) as a center.

The embodiment of the invention relates to a secondary stroke superposition process of a series combined oil cylinder as follows:

forward superposition: feeding oil into a rodless cavity of the primary oil cylinder B1 (1), pushing a cylinder barrel of the primary oil cylinder B1 (1) to move forwards, simultaneously driving the secondary oil cylinder B2 (2), the secondary oil cylinder B3 (3) and a drilling machine power head (4) to move forwards together, and stopping moving forwards to finish a stroke when the cylinder barrel of the primary oil cylinder B1 (1) moves to the stroke position; and then, hydraulic oil respectively enters rodless cavities of a secondary oil cylinder B2 (2) and a secondary oil cylinder B3 (3) to push piston rods of the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) to move forwards and simultaneously drive the drill rod power head (4) to continuously move forwards, when the piston rods of the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) move forwards to a stroke requirement position, the forward movement is stopped, the secondary stroke overlapping forward movement process is completed, and the forward movement stroke of the drill power head (4) is completed.

Back superposition: the rod cavity of the primary oil cylinder B1 (1) is fed with oil to push the cylinder barrel of the primary oil cylinder B1 (1) to move backwards and simultaneously drive the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) to move backwards together, and when the cylinder barrel of the primary oil cylinder B1 (1) moves to the stroke position, the backward movement is stopped to complete one stroke; and then, hydraulic oil respectively enters rod cavities of a secondary oil cylinder B2 (2) and a secondary oil cylinder B3 (3) to push piston rods of the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) to move backwards and simultaneously drive the drill rod power head (4) to continuously move backwards, and when the piston rods of the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) move backwards to a stroke requirement position, the backward movement is stopped, the secondary stroke overlapping backward movement process is completed, and the backward movement stroke of the drill power head (4) is completed.

Compared with the prior art, the invention has the beneficial effects that: the novel series combined type oil cylinder direct-drive horizontal directional drilling machine is simple in structure and high in transmission efficiency, and the power head of the drilling machine is directly driven to move by the series combined type oil cylinder; the invention adopts the structure arrangement of the series combined oil cylinder, and reduces the integral length size of the combined oil cylinder and the length size of a single oil cylinder thereof by the secondary stroke superposition of the series combined oil cylinder under the condition of meeting the working requirement of the power head stroke of the drilling machine, so that the structure of the oil cylinder tends to be compact, and simultaneously, the pressure instability risk caused by longer piston rod of the oil cylinder is effectively reduced, and the working reliability of the horizontal directional drilling machine is improved.

Those not described in detail in this specification are within the skill of the art. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a novel directional rig of level is directly driven to combination formula hydro-cylinder in series, includes one-level hydro-cylinder B1 (1), two structures and the same second grade hydro-cylinder B2 (2) of function and second grade hydro-cylinder B3 (3), rig unit head (4), its characterized in that: a piston rod of the primary oil cylinder B1 (1) is connected to a girder of the drilling machine; and two ends of the secondary oil cylinder B2 (2) and the secondary oil cylinder B3 (3) are respectively connected with a primary oil cylinder B1 (1) and a drilling machine power head (4).

2. The novel series combined type oil cylinder direct-drive horizontal directional drilling machine as claimed in claim 1, is characterized in that: the two-stage oil cylinder B2 (2), the two-stage oil cylinder B3 (3) with one-stage oil cylinder B1 (1) sets up as central symmetry, just the two-stage oil cylinder B2 (2) the two ends of the two-stage oil cylinder B3 (3) are equallyd divide and are connected respectively in hydro-cylinder B1 (1) and rig unit head (4).

3. The novel series combined type oil cylinder direct-drive horizontal directional drilling machine as claimed in claim 1, is characterized in that: the primary stroke of the primary oil cylinder B1 (1) is in proportional relation with the secondary strokes of the secondary oil cylinder B2 (2) and the oil cylinder B3 (3), and the superposition of the primary stroke and the secondary stroke is equal to the working stroke of the power head (4) of the drilling machine.