A double-mechanism side-pushing horizontal directional drilling machine

Abstract

This invention provides a dual-mechanism side-push horizontal directional drilling rig, comprising a chassis assembly, a guide rail frame, a push-pull platform, a power head, two sets of push-pull mechanisms, and a clamping assembly. The guide rail frame is mounted on the chassis assembly, and the guide rail beam includes two parallel guide rail beams. The two ends of the push-pull platform are slidably connected to the two guide rail beams respectively. The power head is located at the center of the push-pull platform, and the two sets of push-pull mechanisms are symmetrically arranged at both ends of the push-pull platform. This invention employs a dual-push-pull mechanism design, where the push-pull force axes of the two sets of push-pull mechanisms are on the same plane as the axis of the power head's rotating spindle, and the two sets of push-pull mechanisms are symmetrically arranged on both sides of the power head. This ensures that the resultant force of the push-pull forces of the two sets of push-pull mechanisms coincides with the axis of the power head's rotating spindle, forming a balanced force with the reaction force transmitted from the drill rod to the rotating spindle during construction. This avoids eccentric torque caused by the push-pull driving force and the drill rod's push-pull reaction force being off-axis.

Description

Technical Field

[0001] This invention belongs to the field of engineering drilling technology, and in particular relates to a dual-mechanism side-push horizontal directional drilling rig. Background Technology

[0002] Horizontal directional drilling rigs are drilling machines that require strong pull-back force. Their main actions are rotation and pushing / pulling. Currently, the design of horizontal directional drilling rigs, both domestically and internationally, places the rotary power head on the upper part of the main beam. The power head is connected to the track plate on the main beam via rollers / slides. The strong pull-back force required by the power head is driven by a gear and rack mechanism or hydraulic cylinder pushing / pulling mechanism below the power head. The driving force first acts on the lower structure of the power head (also called the lower housing), and is then transmitted to the upper structure of the power head (also called the upper housing) through the connection between the lower and upper structures. Finally, it is transmitted to the rotating spindle of the drilling rig. Therefore, existing horizontal directional drilling rigs have the following shortcomings in actual use:

[0003] 1. The driving force of the push-pull mechanism is not on the same axis as the axis of rotation of the spindle or the push-pull reaction force of the drill rod, which causes the structure to be affected by the eccentric moment and has an eccentric force situation. This leads to mechanical efficiency loss caused by eccentric force friction, unstable push-pull operation of the mechanism, and problems such as complex and heavy structure and high production cost due to strengthening of structural strength.

[0004] 2. The drill rod is located at a high point of application of the push-pull reaction force of the rotating spindle, resulting in poor overall anti-overturning performance. When the drill rig pulls back the pipe, a large overturning moment occurs on the front side under the reaction force, which may lead to a potential risk of the drill rig overturning forward.

[0005] Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a dual-mechanism side-push type horizontal directional drill with no eccentric force and strong anti-overturning performance, thereby solving the problems of large eccentric force and easy overturning in the actual use of existing horizontal directional drills.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] A dual-mechanism side-push horizontal directional drilling rig includes a chassis assembly, a guide rail frame, a push-pull platform, a power head, two sets of push-pull mechanisms, and a clamping assembly. The guide rail frame is mounted on the chassis assembly. The guide rail beam includes two parallel guide rail beams. The two ends of the push-pull platform are slidably connected to the two guide rail beams respectively. The power head is located at the center of the push-pull platform. The two sets of push-pull mechanisms are symmetrically arranged at both ends of the push-pull platform, and the push-pull force axes of the two sets of push-pull mechanisms are on the same plane as the axis of rotation of the power head. The clamping assembly is located at the front end of the guide rail frame.

[0009] Preferably, a guide rail plate is provided on the guide rail beam.

[0010] Preferably, the push-pull platform is provided with a sliding seat and an embedded support on both sides, and the sliding seat slides on the guide rail plate.

[0011] Preferably, the lower end of the power head is bolted to an embedded support on the push-pull platform.

[0012] Preferably, the two sets of push-pull mechanisms are combined hydraulic cylinders, each consisting of one push-pull hydraulic cylinder and two assist hydraulic cylinders. The two assist hydraulic cylinders are symmetrically arranged at the upper and lower ends of the push-pull hydraulic cylinder, and the axes of the piston rods of the push-pull hydraulic cylinder and the two assist hydraulic cylinders are on the same vertical plane. The piston rod axis of the push-pull hydraulic cylinder of the two sets of combined hydraulic cylinders is on the same plane as the rotational main shaft axis of the power head.

[0013] Preferably, the mechanical connection between the push-pull cylinder and the two assist cylinders is a series combination, that is, the piston rods of the push-pull cylinders are symmetrically connected to the base at the front end of the guide rail frame, the cylinder barrels of the assist cylinders are symmetrically connected to the upper and lower ends of the cylinder barrel of the push-pull cylinder, and the piston rods of the assist cylinders are connected to the push-pull platform.

[0014] Preferably, the chassis assembly is provided with a front angle adjustment cylinder, a rear angle adjustment cylinder, and a support frame. The bottom of the cylinder of the front angle adjustment cylinder is hinged to the front part of the chassis assembly, and its piston rod is hinged to the bottom of the guide rail frame at a forward position. The bottom end of the support frame is hinged to the front part of the chassis assembly, and its top end is hinged to the bottom of the guide rail frame at a rear position. The bottom of the cylinder of the rear angle adjustment cylinder is hinged to the rear part of the chassis assembly, and its piston rod is hinged to the middle part of the support frame.

[0015] Preferably, there are two front-adjusting cylinders and two rear-adjusting cylinders.

[0016] Furthermore, the push-pull mechanism can also be composed of racks and gear sets. The racks of the two sets of push-pull mechanisms are symmetrically arranged on the inner sides of the two guide beams. The axis of the rack is on the same plane as the axis of the rotating main shaft of the power head. The gear sets of the two sets of push-pull mechanisms are symmetrically arranged at both ends of the push-pull platform and are driven by a hydraulic motor to move back and forth along the rack.

[0017] Furthermore, the push-pull mechanism can also be a combination of a hydraulic cylinder and a rack and pinion mechanism, wherein the axis of the push-pull force is on the same plane as the axis of the rotating main shaft of the power head.

[0018] Furthermore, the push-pull mechanism can also be a single-cylinder type, with the piston rods of the cylinders of the two sets of push-pull mechanisms symmetrically fixed at the front end of the guide rail frame, and the cylinder barrels symmetrically connected to both sides of the push-pull platform. The central axis of the piston rods of the cylinders of the two sets of push-pull mechanisms is on the same plane as the axis of the rotating main shaft of the power head.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The design employs a dual push-pull mechanism. The push-pull force axes of the two mechanisms are on the same plane as the axis of the power head's rotating spindle, and the two mechanisms are symmetrically arranged on both sides of the power head. This ensures that the resultant force of the push-pull forces of the two mechanisms coincides with the axis of the power head's rotating spindle, forming a balanced force with the reaction force transmitted from the drill rod to the rotating spindle during construction. This avoids the eccentric torque caused by the resultant force of the push-pull driving force and the drill rod's push-pull reaction force not being on the same axis as in previous designs. This invention optimizes the structural stress, eliminating mechanical efficiency loss caused by mechanical friction due to eccentric torque, thus improving the overall machine's working efficiency. Furthermore, it simplifies the structural complexity and reduces the structural weight, lowering production costs. Simultaneously, it eliminates the influence of eccentric torque during push-pull operation, improving the overall machine's operational stability.

[0021] 2. The power head of the present invention adopts an embedded structure and is installed in the push-pull platform, which reduces the height of the power head rotating spindle in the overall machine space structure. That is, it reduces the height of the point of action of the drill rod push-pull reaction force on the whole machine during construction, which enhances the overturning resistance of the whole machine and thus improves the safety of the drill machine and the operator during construction.

[0022] 3. This invention uses the cooperation of the front and rear angle-adjusting cylinders to adjust the angle between the guide rail frame and the chassis assembly, thereby adjusting the angle of the power head's rotating spindle axis and adjusting the drilling rig's incident angle.

[0023] 4. The push-pull mechanism of the present invention adopts a combined hydraulic cylinder structure, consisting of one push-pull hydraulic cylinder and two auxiliary hydraulic cylinders. The two sets of push-pull mechanisms have a total of 6 hydraulic cylinders, which can provide a greater push-pull force than traditional drilling rigs, and at the same time can provide a greater push-pull stroke than traditional single hydraulic cylinder push-pull structures. The maximum push-pull stroke that the present invention can provide is the sum of the piston rod lengths of one push-pull hydraulic cylinder and one auxiliary hydraulic cylinder. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the embodiments are described and introduced below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is a perspective view of the structure of Embodiment 1 of the present invention without the chassis assembly;

[0027] Figure 3 This is a front view of the structure of Embodiment 1 of the present invention without the chassis assembly;

[0028] Figure 4 This is a top view of the structure of Embodiment 1 of the present invention without the chassis assembly;

[0029] Figure 5 This is a schematic diagram of the push-pull mechanism according to Embodiment 1 of the present invention;

[0030] Figure 6 This is a schematic diagram of the chassis assembly according to Embodiment 1 of the present invention;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Chassis assembly; 101. Front angle adjustment cylinder; 102. Rear angle adjustment cylinder; 103. Support frame; 2. Guide rail frame; 201. Guide rail beam; 202. Guide rail plate; 3. Push-pull platform; 301. Sliding seat; 302. Embedded support; 4. Power head; 401. Rotary spindle; 5. Push-pull mechanism; 501. Push-pull cylinder; 502. Power assist cylinder; 6. Clamp assembly. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Example 1

[0035] Please see Figure 1-6 As shown, this embodiment provides a dual-mechanism side-push horizontal directional drilling rig, including a chassis assembly (1), a guide rail frame (2), a push-pull platform (3), a power head (4), two sets of push-pull mechanisms (5), and a clamping assembly (6).

[0036] The chassis assembly (1) is provided with two front angle adjustment cylinders (101), two rear angle adjustment cylinders (102) and a support frame (103). The cylinder of the front angle adjustment cylinder (101) is hinged to the front part of the chassis assembly (1), and its piston rod is hinged to the bottom front position of the guide rail frame (2). The bottom end of the support frame (103) is hinged to the front part of the chassis assembly (1), and its top end is hinged to the bottom rear position of the guide rail frame (2). The bottom of the cylinder of the rear angle adjustment cylinder (102) is hinged to the rear part of the chassis assembly (1), and its piston rod is hinged to the middle part of the support frame (103).

[0037] The guide beam (2) includes two parallel guide beams (201), and a guide plate (202) is provided on the guide beam (201).

[0038] The push-pull platform (3) is provided with sliding seats (301) on both sides, and the sliding seats slide on the guide rail plate (202).

[0039] The power head (4) is located at the center of the push-pull platform (3), and the lower end of the power head (4) is connected to the embedded support (302) on the push-pull platform (3) by bolt embedding.

[0040] The two sets of push-pull mechanisms (5) are symmetrically arranged at both ends of the push-pull platform (3). The two sets of push-pull mechanisms (5) are combined hydraulic cylinders, each consisting of a push-pull hydraulic cylinder (501) and two assist hydraulic cylinders (502). The two assist hydraulic cylinders (502) are symmetrically arranged at the upper and lower ends of the push-pull hydraulic cylinder (501), and the axes of the piston rods of the push-pull hydraulic cylinder (501) and the two assist hydraulic cylinders (502) are on the same vertical plane. The piston rod axis of the push-pull hydraulic cylinder (501) of the two sets of combined hydraulic cylinders (5) is on the same plane as the axis of the rotating main shaft (401) of the power head (4).

[0041] The mechanical connection between the push-pull cylinder (501) and the two assist cylinders (502) is a series combination. That is, the piston rod of the push-pull cylinder (501) is symmetrically connected to the base at the front end of the guide rail frame (2), the cylinder of the assist cylinder (502) is symmetrically connected to the upper and lower ends of the cylinder of the push-pull cylinder (501), and the piston rod of the assist cylinder (502) is connected to the push-pull platform.

[0042] The clamp assembly is located at the front end of the guide rail frame.

[0043] This embodiment adopts a double push-pull mechanism design. The push-pull force axes of the two sets of push-pull mechanisms (5) are on the same plane as the axis of the rotating spindle (401) of the power head (4), and the two sets of push-pull mechanisms (5) are symmetrically arranged on both sides of the power head (4). This ensures that the resultant force of the push-pull force of the two sets of push-pull mechanisms (5) coincides with the axis of the rotating spindle (401) of the power head (4) and forms a pair of balanced forces with the reaction force transmitted from the drill rod to the rotating spindle (401) during construction. This avoids the eccentric torque caused by the resultant force of the push-pull driving force and the push-pull reaction force of the drill rod not being on the same axis. This embodiment optimizes the stress on the structure. On the one hand, it eliminates the mechanical efficiency loss caused by mechanical friction due to eccentric torque, thereby improving the working efficiency of the whole machine. On the other hand, it simplifies the complexity of the structure and reduces the weight of the structure, thereby reducing the production cost of the structure. At the same time, it also eliminates the influence of eccentric torque factors in the push-pull operation process, thereby improving the stability of the whole machine.

[0044] In this embodiment, the power head (4) is embedded in the push-pull platform (3) with an embedded structure, which reduces the height of the rotating spindle (401) of the power head (4) in the overall machine space structure. That is, it reduces the height of the point of action of the drill rod push-pull reaction force on the whole machine during construction, which enhances the overturning resistance of the whole machine and improves the safety of the drill machine during construction.

[0045] In this embodiment, the angle between the guide rail frame (2) and the chassis assembly (1) is adjusted by the cooperation of the front angle adjustment cylinder (101) and the rear angle adjustment cylinder (102), thereby adjusting the angle of the axis of the rotating spindle (401) of the power head (4) and adjusting the incident angle of the drilling rig.

[0046] The push-pull mechanism (5) of this embodiment adopts a combined hydraulic cylinder structure, consisting of one push-pull hydraulic cylinder (501) and two assist hydraulic cylinders (502). The two sets of push-pull mechanisms have a total of 6 hydraulic cylinders, which can provide a greater push-pull force than traditional drilling rigs. At the same time, it can provide a greater push-pull stroke than traditional single hydraulic cylinder push-pull structures. The maximum push-pull stroke that this invention can provide is the sum of the piston rod lengths of the push-pull hydraulic cylinder (501) and the assist hydraulic cylinder (502).

[0047] Example 2

[0048] Based on the dual-mechanism side-push horizontal directional drilling rig provided in Embodiment 1, in actual use, the push-pull mechanism (5) can also be composed of racks and gear sets. The racks of the two sets of push-pull mechanisms (5) are symmetrically arranged on the inner sides of the two slide rail beams (201). The axis of the rack is on the same plane as the axis of the rotating spindle (401) of the power head (4). The gear sets of the two sets of push-pull mechanisms (5) are symmetrically arranged at both ends of the push-pull platform (3) and are driven by a hydraulic motor to move back and forth along the rack.

[0049] Example 3

[0050] Based on the dual-mechanism side-push horizontal directional drilling rig provided in Embodiment 1 and Embodiment 2, in actual use, the push-pull mechanism (5) can also be a combination of hydraulic cylinder and rack and pinion, and the axis of its push-pull force is on the same plane as the axis of the rotating spindle (401) of the power head (4).

[0051] The above are merely preferred embodiments of the present invention and do not limit the present invention. For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-mechanism side-push horizontal directional drilling rig, comprising a chassis assembly, a guide rail frame, a push-pull platform, a power head, two sets of push-pull mechanisms, and a clamping assembly, characterized in that, The guide rail frame is mounted on the chassis assembly. The guide rail beam includes two parallel guide rail beams. The two ends of the push-pull platform are slidably connected to the two guide rail beams respectively. The power head is located at the center of the push-pull platform. The two sets of push-pull mechanisms are symmetrically arranged at both ends of the push-pull platform, and the push-pull force axis of the two sets of push-pull mechanisms is on the same plane as the axis of rotation of the power head. The clamp assembly is located at the front end of the guide rail frame. A guide rail plate is provided on the guide rail beam. The two sets of push-pull mechanisms are combined hydraulic cylinders, each consisting of one push-pull hydraulic cylinder and two auxiliary hydraulic cylinders. The two auxiliary hydraulic cylinders are symmetrically arranged at the upper and lower ends of the push-pull hydraulic cylinder, and the axes of the piston rods of the push-pull hydraulic cylinder and the two auxiliary hydraulic cylinders are on the same vertical plane. The piston rod axis of the push-pull hydraulic cylinder of the two sets of combined hydraulic cylinders is on the same plane as the rotation axis of the main shaft of the power head. The mechanical connection between the push-pull hydraulic cylinder and the two auxiliary hydraulic cylinders is a series combination, that is, the piston rod of the push-pull hydraulic cylinder is symmetrically connected to the base at the front end of the guide rail frame, the cylinder barrel of the auxiliary hydraulic cylinder is symmetrically connected to the upper and lower ends of the cylinder barrel of the push-pull hydraulic cylinder, and the piston rod of the auxiliary hydraulic cylinder is connected to the push-pull platform.

2. The dual-mechanism side-push horizontal directional drilling rig according to claim 1, characterized in that, The push-pull platform is provided with sliding seats and embedded supports on both sides, and the sliding seats slide on the guide rail plate.

3. A dual-mechanism side-push horizontal directional drilling rig according to claim 2, characterized in that, The lower end of the power head is bolted to an embedded support on the push-pull platform.

4. A dual-mechanism side-push horizontal directional drilling rig according to claim 1, characterized in that, The chassis assembly is equipped with a front angle adjustment cylinder, a rear angle adjustment cylinder, and a support frame. The bottom of the cylinder of the front angle adjustment cylinder is hinged to the front of the chassis assembly, and its piston rod is hinged to the bottom of the guide rail frame at a forward position. The bottom of the support frame is hinged to the front of the chassis assembly, and its top is hinged to the bottom of the guide rail frame at a rear position. The bottom of the cylinder of the rear angle adjustment cylinder is hinged to the rear of the chassis assembly, and its piston rod is hinged to the middle of the support frame.

5. A dual-mechanism side-push horizontal directional drilling rig according to claim 4, characterized in that, There are two front-adjusting hydraulic cylinders and two rear-adjusting hydraulic cylinders.

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