Pressurizing power head special for rotary drilling rig
By designing a special pressurized power head for rotary drilling rig, the independent retraction and re-expansion of the power head pressurized oil cylinder is used to form a second pressurized system, which solves the problem of insufficient pressurized pressure in the existing technology and achieves higher pressurized Pressure and rock entry capacity.
Patent Information
- Application Number
- CN202420191799.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-26
AI Technical Summary
The conventional pressurization devices of existing rotary drilling rigs cannot meet construction needs during construction harder formations, and the traditional pressurization forms cannot effectively improve the pressurization and rock entry capacity.
A special pressurized power head for rotary drilling rig was designed. By setting up a power head pressurized oil cylinder in the power head box, and using a fixed pin connection method with a cross-section structure, the independent retraction and re-return of the power head pressurized oil cylinder is achieved. Expand to form a second pressurization system to increase pressurization.
It effectively improves the pressure and rock-entry capacity of the rotary drilling rig, solves the shortcomings of traditional pressurization forms during harder formation construction, and is not limited by the stability of the whole machine, and can even transmit pressure within the range that the drilling rod can withstand. .
Smart Images
Figure CN222457332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a special pressurized power head for rotary drilling rigs. Background Art
[0002] The rotary drilling rig is a common foundation construction equipment for pile operations, and is used in housing construction, high-speed rail construction, bridge construction and other construction fields. The power head is an important part of the rotary drilling rig, and its function is to output torque for low-speed drilling and reverse high-speed soil throwing.
[0003] In the prior art, the pressure is generated by the pressurizing device, power head, drill rod, drill bit, and tooth tip to achieve the purpose of cutting, crushing, or grinding. The conventional pressurizing device of the rotary drilling rig is divided into two types: pressurizing cylinder and winch pressurizing. These two methods need to match the stability of the whole vehicle to complete the limited pressurizing output; when constructing in harder formations, the traditional pressurizing form often cannot meet the construction requirements. In order to cope with the construction in harder formations, a special pressurizing power head for rotary drilling rigs is proposed to solve the above problems. Utility Model Content
[0004] In view of the shortcomings of the prior art, the utility model provides a special pressurizing power head for a rotary drilling rig, which has the advantages of effectively increasing the pressurizing force of the rotary drilling rig and improving the rock penetration ability of the drilling rig. It solves the problem that the conventional pressurizing devices of the existing rotary drilling rigs are divided into two types: pressurizing cylinder and winch pressurization. These two types need to match the stability of the entire vehicle to complete limited pressurizing force output; when constructing in harder formations, the traditional pressurization form often cannot meet the construction needs.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special pressurized power head for a rotary drilling rig, comprising a power head box, the top of which is fixedly connected to a power head pressurized oil cylinder, the movable end of which is fixedly connected to a driving key sleeve, and a drill rod is installed inside the driving key sleeve.
[0006] Furthermore, a cylinder connecting pin is passed through the fixed end of the power head pressurizing cylinder, and the power head pressurizing cylinder is fixedly connected to the power head box via the cylinder connecting pin.
[0007] Furthermore, a piston rod connecting pin is passed through the movable end of the power head pressurizing cylinder, and the movable end of the power head pressurizing cylinder is fixedly connected to the driving key sleeve through the piston rod connecting pin.
[0008] Furthermore, the driving key sleeve is slidably connected to the power head box through the power head pressurized cylinder.
[0009] Furthermore, a key bar is installed inside the drill rod, and the drill rod is fixedly connected to the inside of the driving key sleeve through the key bar.
[0010] Furthermore, the number of the power head pressurizing cylinders is two, and the two power head pressurizing cylinders are symmetrically distributed on the left and right sides of the two driving key sleeves.
[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0012] 1. The special pressurizing power head of the rotary drilling rig can retract the pressurizing cylinder of the power head after the first pressurizing system of the rotary drilling rig is pressurized, so that the key bar in the driving key sleeve is pressed on the pressurizing platform of the drill rod; thus completing the second pressurizing operation of the rotary drilling rig. This pressurization form is not limited by the stability of the whole machine, and can effectively transmit the pressurizing force output by the pressurizing cylinder of the power head within the tolerance range of the drill rod.
[0013] 2. The rotary drilling rig is equipped with a special pressurized power head. The fixed pin connection method of the power head pressurized oil cylinder on the left and right sides is a cross-shaped structure, which effectively prevents the power head pressurized oil cylinder from shaking during movement. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is the front view of the structure of the utility model;
[0015] Figure 2 It is a three-dimensional diagram of the structure of the utility model;
[0016] Figure 3 This is a partial perspective view of the structural key bar and drill rod of the utility model.
[0017] In the figure: 1. Power head box; 2. Cylinder connecting pin; 3. Power head pressurized cylinder; 4. Piston rod connecting pin; 5. Drive key sleeve; 6. Key bar; 7. Drill rod. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-3 In this embodiment, a special pressurized power head for a rotary drilling rig includes a power head box 1, a power head pressurized oil cylinder 3 is fixedly connected to the top of the power head box 1, a cylinder connecting pin 2 is passed through the fixed end of the power head pressurized oil cylinder 3, and the power head pressurized oil cylinder 3 is fixedly connected to the power head box 1 through the cylinder connecting pin 2.
[0020] The movable end of the power head pressurizing cylinder 3 is fixedly connected with a driving key sleeve 5, and a piston rod connecting pin shaft 4 is passed through the movable end of the power head pressurizing cylinder 3. The movable end of the power head pressurizing cylinder 3 is fixedly connected with the driving key sleeve 5 through the piston rod connecting pin shaft 4.
[0021] The driving key sleeve 5 is slidably connected to the power head box 1 through the power head pressurizing cylinder 3, so that the driving key sleeve 5 can move up and down on the top of the power head box 1 through the power head pressurizing cylinder 3.
[0022] A drill rod 7 is installed inside the driving key sleeve 5 , and a key bar 6 is installed inside the drill rod 7 . The drill rod 7 is fixedly connected to the inside of the driving key sleeve 5 via the key bar 6 .
[0023] There are two power head pressurizing cylinders 3 , which are symmetrically distributed on the left and right sides of the two driving key sleeves 5 .
[0024] In this embodiment, a power head pressurizing cylinder 3 is disposed on both sides of the driving key sleeve 5 to ensure the stability of the movement of the drill rod 7 under pressurized conditions.
[0025] In this embodiment, the fixed pin connection mode of the power head pressurizing cylinder 3 on the left and right sides is a cross structure, which effectively prevents the power head pressurizing cylinder 3 from shaking during movement.
[0026] In this embodiment, a pressurizing system is added to the traditional pressurizing form, which greatly improves the pressurizing force of the rotary drilling rig.
[0027] The working principle of the above embodiment is:
[0028] The special pressurizing power head for rotary drilling rig can operate the power head pressurizing oil cylinder 3 to retract after the first pressurizing system of the rotary drilling rig is pressurized, so that the key bar 6 in the driving key sleeve 5 is pressed on the pressurizing platform of the drill rod 7; thus the second pressurizing operation of the rotary drilling rig is completed. Such a pressurizing form is not limited by the stability of the whole machine, and can effectively transmit the pressurizing force output by the power head pressurizing oil cylinder 3 within the tolerable range of the drill rod 7.
[0029] It should be noted that the standard parts used in the application can be purchased from the market, special-shaped parts can be customized according to the description in the specification and drawings, and the specific connection methods of each part adopt mature bolts, rivets, welding, etc. in the prior art, and conventional means. Machinery, parts and equipment all adopt conventional models in the prior art; plus the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A special pressurized power head for a rotary drilling rig, comprising a power head box (1), characterized in that: The top of the power head box (1) is fixedly connected to a power head pressurizing cylinder (3), the movable end of the power head pressurizing cylinder (3) is fixedly connected to a driving key sleeve (5), and a drill rod (7) is installed inside the driving key sleeve (5).
2. The special pressurizing power head for rotary drilling rig according to claim 1, characterized in that: A cylinder connecting pin shaft (2) is passed through the fixed end of the power head pressurizing cylinder (3), and the power head pressurizing cylinder (3) is fixedly connected to the power head box (1) via the cylinder connecting pin shaft (2).
3. The special pressurizing power head for rotary drilling rig according to claim 1, characterized in that: The movable end of the power head pressurizing oil cylinder (3) is provided with a piston rod connecting pin shaft (4), and the movable end of the power head pressurizing oil cylinder (3) is fixedly connected to the driving key sleeve (5) via the piston rod connecting pin shaft (4).
4. The special pressurizing power head for rotary drilling rig according to claim 1, characterized in that: The driving key sleeve (5) is slidably connected to the power head box (1) via the power head pressurizing cylinder (3).
5. The special pressurizing power head for rotary drilling rig according to claim 1, characterized in that: A key bar (6) is installed inside the drill rod (7), and the drill rod (7) is fixedly connected to the inside of the driving key sleeve (5) through the key bar (6).
6. The special pressurizing power head for rotary drilling rig according to claim 1, characterized in that: The number of the power head pressurizing cylinders (3) is two, and the two power head pressurizing cylinders (3) are symmetrically distributed on the left and right sides of the two driving key sleeves (5).