Chassis device of coal bed gas drilling machine
By introducing components such as anchoring cylinder sleeves and limit rings into the chassis device of the coalbed methane drilling rig, the pressure problem of the chassis during tower lifting was solved, the stability and safety were improved, the structure was simplified and maintenance was facilitated.
Patent Information
- Application Number
- CN202520258628.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-18
AI Technical Summary
The chassis of existing coalbed methane drilling rigs is subjected to great pressure at the moment of tower lifting, resulting in complex beams and lifting structures, posing safety hazards, and lacking stability and reliability.
A chassis device for a coalbed methane drilling rig was designed, which uses components such as anchor cylinder sleeve, main crossbeam, front crossbeam, longitudinal beam, and lifting tripod. The anchor cylinder sleeve supports the weight of the superstructure, the main crossbeam distributes the gravity, and the combination of limit ring and guide ball reduces friction, thereby achieving a stable connection of the lifting rope.
It effectively alleviates the stress on the chassis structure, improves the stability of the drilling rig, prevents it from tipping over or overturning, and simplifies the structure, making it convenient for inspection and maintenance.
Smart Images
Figure CN223894083U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field, specifically to a chassis device for a coalbed methane drilling rig. Background Technology
[0002] Surface drilling is one of the important methods for coalbed methane development, and coalbed methane tracked drilling rigs are favored by users due to their advantages of being suitable for complex road conditions and having a high degree of integration. As the capabilities of coalbed methane drilling rigs improve, the requirements for their chassis are also becoming more stringent.
[0003] Due to the layout requirements of the superstructure components on the chassis, and the fact that the chassis must function as a working platform during superstructure operations, conventional tracked chassis are subjected to significant pressure during the moment the coalbed methane drilling rig raises its tower. This results in complex chassis beams and lifting structures, posing certain safety hazards. For drilling rigs that frequently raise their towers, the stability and reliability of this structure are particularly crucial. Currently, chassis platforms are generally constructed from welded rectangular tubing, which offers poor stability under complex stress conditions. Therefore, there is an urgent need to develop a new type of chassis platform that not only meets the installation requirements of the superstructure components and ensures smooth operation of the entire machine under various working conditions, but also fulfills its function as a chassis. Utility Model Content
[0004] The purpose of this utility model is to provide a chassis device for a coalbed methane drilling rig, in order to solve the problem mentioned in the background art that, due to the layout requirements of the superstructure components on the chassis and the fact that the chassis needs to act as a working platform during superstructure operation, conventional tracked chassis devices are subjected to great pressure at the moment the coalbed methane drilling rig lifts its tower, resulting in the chassis beams and lifting structures being made quite complex.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a chassis device for a coalbed methane drilling rig, comprising:
[0007] An anchoring cylinder sleeve, with a main crossbeam fixed to one end of the upper part of the anchoring cylinder sleeve, and a front crossbeam fixed to the lower part of the inner side of the main crossbeam. Longitudinal beams are welded to both sides of the inner middle of the main crossbeam and the front crossbeam. A diagonal brace is fixed to the upper end of the front crossbeam, and a lifting tripod is fixed to the middle end of one side of the front crossbeam. Cylinder hinge seats are symmetrically fixed to both sides of the upper middle of the main crossbeam.
[0008] Furthermore, the angle formed by the main crossbeam and the diagonal brace is 30°.
[0009] Furthermore, a lifting column is provided through the lower part of one end of the lifting tripod, and limiting rings are symmetrically and movably provided on both sides of the middle part of the lifting column.
[0010] Furthermore, a positioning ring is fitted on the outer surface of the end of the lifting column, and positioning bolts extending into the lifting tripod are equidistantly inserted through the middle of the positioning ring.
[0011] Furthermore, the outer edge of the inner side of the limiting ring is provided with rolling grooves at equal intervals, and guide balls are rolled inside the rolling grooves, with the outer surface of the guide balls rolling in contact with the surface of the lifting rope.
[0012] Furthermore, one side of the inner wall of the lifting tripod is circumferentially fitted with movable tubes, and one end of the inner wall of the movable tube is provided with a movable spring. One end of the movable spring is fixed with a movable column, and one end of the movable column is fixed to the outside of the limiting ring.
[0013] This utility model has the following beneficial effects:
[0014] In this invention, during the lifting operation, the center of the drilling rig gradually moves forward. When it is about to reach the end point, the weight of the upper structure is transferred to the main crossbeam through the hydraulic cylinder hinge. The main crossbeam can directly distribute the gravity to the anchoring cylinder, relieving the stress on the main beam of the drilling rig platform, greatly reducing the pressure on the internal structure of the chassis, and increasing the stability of the chassis. It can effectively prevent the drilling rig from tipping over or overturning when lifting the tower. Furthermore, the entire structure is relatively simple, and subsequent inspection and maintenance are convenient.
[0015] Based on the aforementioned beneficial effects, during the lifting process using a lifting tripod, the external lifting equipment is connected to the lifting tripod via a lifting column. Limiting rings are provided on both sides of the middle of the outer surface of the lifting column, which, together with the elastically connected movable column, can be independently extended and adjusted to accommodate the connection of lifting ropes of different sizes. Furthermore, with the addition of multiple guide balls, the contact friction between the two can be reduced, improving the lifting effect and applicability to meet different needs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a front view of the present utility model;
[0018] Figure 2 This is a perspective view of the appearance of this utility model;
[0019] Figure 3 This is a structural diagram of the lifting tripod of this utility model;
[0020] Figure 4This utility model Figure 3 Enlarged view of point A in the middle.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Anchor cylinder sleeve; 2. Main crossbeam; 3. Cylinder hinge seat; 4. Front crossbeam; 5. Longitudinal beam; 6. Lifting tripod; 61. Lifting column; 62. Movable tube; 63. Movable column; 64. Limiting ring; 65. Rolling groove; 66. Guide ball; 67. Positioning ring; 68. Positioning bolt. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0025] Please see Figure 1-4 As shown, this utility model is a chassis device for a coalbed methane drilling rig, comprising:
[0026] Anchor cylinder sleeve 1, with a main crossbeam 2 fixed at one end of the upper part of the anchor cylinder sleeve 1, and a front crossbeam 4 fixed at the lower part of the inner side of the main crossbeam 2. Longitudinal beams 5 are welded to both sides of the inner middle part of the main crossbeam 2 and the front crossbeam 4. A diagonal brace is fixed at the upper end of the front crossbeam 4, and a lifting tripod 6 is fixed at the middle end of one side of the front crossbeam 4. Cylinder hinge seats 3 are symmetrically fixed on both sides of the upper middle part of the main crossbeam 2.
[0027] The anchoring cylinder sleeve 1 supports the weight of the superstructure to reduce the pressure on the chassis, reduce the probability of damage and deformation, and lower costs. The main crossbeam 2 provides the installation environment and connects and fixes the main crossbeam 2 and the front crossbeam 4 through diagonal bracing. The cylinder hinge 3 transmits force to the anchoring cylinder sleeve 1 through contact with the weight of the superstructure. The lifting tripod 6, in conjunction with the external lifting equipment, lifts the chassis assembly.
[0028] The angle between the main beam 2 and the diagonal brace is 30°.
[0029] Working principle: During the lifting of the chassis device, the ends of the lifting ropes are bolted to the lifting equipment and the lifting tripod 6 respectively. As the external lifting equipment gradually lifts the chassis device, the center of the drilling rig will gradually move forward. When it is about to be lifted to the end point, the weight of the upper structure is transferred to the main crossbeam 2 through the hydraulic cylinder hinge 3. The main crossbeam 2 can directly distribute the gravity to the anchoring hydraulic cylinder.
[0030] This solution alleviates the stress on the drilling platform's main beam, significantly reduces the pressure on the internal structure of the chassis, and increases the chassis's stability. It can effectively prevent the drilling rig from tipping over or overturning when raising the tower. Furthermore, the overall structure is relatively simple, making subsequent inspection and maintenance convenient.
[0031] Please see Figure 1-4 As shown, in this embodiment, based on the above embodiment, a lifting column 61 is provided through the lower part of one end of the lifting tripod 6, and limiting rings 64 are symmetrically and movably provided on both sides of the middle part of the lifting column 61.
[0032] The lifting column 61 allows for the bolting of one end of the lifting rope to transfer the lifting equipment force to the chassis device, thus completing the lifting operation. The limiting ring 64 limits the position of the lifting rope.
[0033] A positioning ring 67 is fitted on the outer surface of the end of the lifting column 61, and positioning bolts 68 extending into the lifting tripod 6 are equidistantly provided in the middle of the positioning ring 67.
[0034] The positioning bolt 68 is used to install and fix the positioning ring 67. The threaded connection method facilitates the disassembly and assembly of the structure, and the fixed positioning ring 67 meets the structural requirements of the lifting column 61.
[0035] The outer edge of the inner side of the limiting ring 64 is provided with rolling grooves 65 at equal intervals, and guide balls 66 are rolled inside the rolling grooves 65. The outer surface of the guide balls 66 rolls in contact with the surface of the lifting rope.
[0036] The rolling groove 65 supports multiple guide balls 66. With the help of the rolling characteristics of the guide balls 66, the hoisting rope can be rolled and supported, ensuring structural constraints while reducing contact friction between the two.
[0037] One side of the inner wall of the lifting tripod 6 is circumferentially fitted with movable tubes 62, and one end of the inner wall of the movable tube 62 is provided with a movable spring. One end of the movable spring is fixed with a movable column 63, and one end of the movable column 63 is fixed to the outside of the limiting ring 64.
[0038] The movable tube 62 supports the movable column 63 via a movable spring. The movable column 63 can be extended or retracted by the extension and retraction of the movable spring, thereby satisfying the adjustment of the spacing between the limit rings 64 to accommodate hoisting ropes of different sizes.
[0039] Working principle: After the lifting column 61 is inserted through one end of the lifting tripod 6, a positioning ring 67 is fitted onto the end of the lifting column 61, and positioning bolts 68 are inserted into the middle of the positioning ring 67 in sequence. Then, a tightening force is applied to lock it. At this time, an external force is applied to the limiting rings 64 on both sides of the middle of the lifting column 61, which increases the distance between the limiting rings 64. The lifting rope is then bolted to the outer surface of the lifting column 61. After the force is released, the limiting rings 64 return to their original state and can roll into contact with them through multiple guide balls 66.
[0040] This solution can accommodate the connection and docking of lifting ropes of different sizes. In addition, with the addition of multiple guide balls 66, the contact friction between the two can be reduced, thereby improving the lifting effect and applicability to meet different needs.
[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A chassis assembly for a coalbed methane drilling rig, characterized in that, include: Anchor cylinder sleeve (1), with a main crossbeam (2) fixed at one end of the upper part of the anchor cylinder sleeve (1), and a front crossbeam (4) fixed at the lower part of the inner side of the main crossbeam (2). Longitudinal beams (5) are welded to both sides of the inner middle part of the main crossbeam (2) and the front crossbeam (4). A diagonal brace is fixed at the upper end of the front crossbeam (4), and a lifting tripod (6) is fixed at the middle part of one side of the front crossbeam (4). Cylinder hinge seats (3) are symmetrically fixed on both sides of the upper middle part of the main crossbeam (2).
2. The chassis device of a coalbed methane drilling rig according to claim 1, characterized in that: The angle between the main crossbeam (2) and the diagonal brace is 30°.
3. The chassis device of a coalbed methane drilling rig according to claim 1, characterized in that: The lower part of one end of the lifting tripod (6) is provided with a lifting column (61), and the two sides of the middle part of the lifting column (61) are symmetrically provided with limiting rings (64).
4. The chassis device of a coalbed methane drilling rig according to claim 3, characterized in that: The outer surface of the end of the lifting column (61) is fitted with a positioning ring (67), and the middle part of the positioning ring (67) is provided with positioning bolts (68) that extend into the lifting tripod (6) at equal intervals.
5. The chassis device of a coalbed methane drilling rig according to claim 3, characterized in that: The outer edge of the inner side of the limiting ring (64) is provided with rolling grooves (65) at equal intervals, and guide balls (66) are rolled inside the rolling grooves (65). The outer surface of the guide balls (66) rolls in contact with the surface of the lifting rope.
6. The chassis device of a coalbed methane drilling rig according to claim 1, characterized in that: The inner wall of the lifting tripod (6) is provided with movable tubes (62) circumferentially spaced on one side, and a movable spring is provided at one end of the inner wall of the movable tube (62). A movable column (63) is fixed at one end of the movable spring, and one end of the movable column (63) is fixed to the outside of the limiting ring (64).