Drill jumbo triple-folding multi-direction rotating working arm
By designing a three-fold, multi-directional rotating boom for the rock drilling rig, and adopting a folding design for the boom, two-section boom, and three-section boom, as well as a double-head rotary reducer, a wide range of deployment and multi-directional rotation are achieved. This solves the problem of limited working range of existing rig booms under different working conditions, and improves the flexibility and versatility of the equipment.
Patent Information
- Application Number
- CN202511342989.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2025-10-31
AI Technical Summary
The existing booms of down-the-hole drilling rigs, tunnel drilling rigs, stone quarrying drilling rigs, and slope protection rigs cannot extend over long distances, rotate at multiple angles, or fold under different working conditions, thus limiting their operating range.
A three-fold, multi-directional rotating boom for rock drilling rigs was designed. It adopts a folding design of the boom, two-section boom, and three-section boom, combined with a double-head rotary reducer and a four-bar linkage mechanism, to achieve a maximum 138° unfolding and 360° rotation, meeting various operational needs.
It significantly improves the working range and flexibility, meeting the long-distance and wide-angle requirements of complex operation scenarios such as tunnel excavation and stone mining, and enhances the portability and versatility of the equipment.
Smart Images
Figure CN120867658A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of working arm technology, and in particular to a three-fold multi-directional rotating working arm for a rock drilling rig. Background Technology
[0002] In various work scenarios, such as down-the-hole drilling rigs, tunnel drilling rigs, stone quarrying drilling rigs, and slope protection rigs, working arms are used to assist in the work as needed. Down-the-hole drilling rigs require the working arm to allow the attachments to drill vertically downwards and to rotate slightly to the left and right; tunnel drilling rigs require the working arm to be able to drill horizontally forward, drill for top and side support, and drill for anchoring; stone quarrying drilling rigs require the working arm to extend forward and to the left and right a long distance to drill vertical splitting holes and horizontal wire saw holes; slope protection rigs require the working arm to extend forward and diagonally upward a long distance to drill horizontal and diagonal anchoring holes.
[0003] However, existing down-the-hole drilling rigs only have a boom and linkage mechanism, which can only rotate within a small range and cannot extend the attachments over long distances; existing tunnel drilling rigs generally have non-foldable booms, which limits the drilling range; existing stone quarrying drilling rigs are generally foldable but do not have a slewing deceleration mechanism, which cannot achieve multi-angle stone quarrying; and slope protection rigs are generally straight-arm structures that cannot be folded or rotated.
[0004] Therefore, there is an urgent need for a working arm that is designed for various working scenarios such as down-the-hole drilling rigs, tunnel drilling rigs, stone mining drilling rigs, and slope protection rigs, and is tailored to meet the needs of various complex working conditions in rock drilling. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a three-fold multi-directional rotating working arm for a rock drilling rig.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A rock drilling rig with a three-fold, multi-directional rotating boom includes: a base, a main boom hinged to the base, a connecting frame hinged between the base and the main boom, a second boom section hinged to the other end of the main boom, two boom cylinders hinged to both sides of the front end of the main boom below the second boom section, the front ends of the two boom cylinders being hinged to the connecting frame, a first mounting surface welded to the front end of the second boom section, a double-head rotary reducer fixedly mounted on the side of the first mounting surface, a third boom section welded to the front end of the first mounting surface, a rotary frame hinged to the front end of the third boom section, a second mounting surface welded to the rotary frame, and a double-head rotary reducer fixedly mounted on the side of the second mounting surface.
[0007] As a further technical solution of the present invention, a spatial hinge point is formed between the base, the boom, the connecting frame and the boom cylinder. The boom is driven by two boom cylinders to rotate around the base at a maximum angle of 138°. The boom can also be completely folded and placed on the frame, forming a smaller spatial structure with the frame, so as to obtain better passability and transportation convenience.
[0008] As a further technical solution of the present invention, a first mounting component is welded to the front side of the two-section arm, and a two-section arm cylinder is hinged to the middle of the front end of the main arm below the two-section arm. The front end of the two-section arm cylinder is hinged to the first mounting component. The maximum angle at which the two-section arm rotates around the main arm driven by the two-section arm cylinder is 136°, and the two-section arm can also be completely folded onto the main arm.
[0009] As a further technical solution of the present invention, the three-section arm is driven by a double-head rotary reducer to rotate 360° around the two-section arm.
[0010] As a further technical solution of the present invention, a second mounting bracket is welded to the tail end of the two-section boom, a three-section boom cylinder is hinged on the second mounting bracket, a rocker arm is hinged below the front end of the two-section boom, a connecting rod is hinged to the other end of the rocker arm, the front end of the three-section boom cylinder is hinged to the hinge joint of the rocker arm and the connecting rod, and the other end of the connecting rod is hinged to the slewing frame.
[0011] As a further technical solution of the present invention, the three-section boom, the three-section boom cylinder, the rocker arm, the connecting rod, and the slewing frame form a four-bar linkage structure, wherein the slewing frame serves as the crank, the three-section boom serves as the frame, and the three-section boom cylinder serves as the power source.
[0012] As a further technical solution of the present invention, the dual-head rotary reducer and the attachment fixedly installed on the second mounting surface are driven by a three-section boom cylinder to fold downward or unfold upward.
[0013] As a further technical solution of the present invention, the attachment fixedly installed on the second mounting surface is driven by a double-head rotary reducer to rotate 360° around the rotary frame.
[0014] The beneficial effects of this invention are as follows: 1. Wide Working Range Capacity: Through the folding design of the boom, two-section boom, and three-section boom, and the coordinated action of the boom cylinder, the working boom of the rock drilling rig can achieve a maximum extension angle of 138° and can be completely folded onto the frame to adapt to different working conditions. This design significantly improves the working range and flexibility, meeting the requirements of long-distance and wide-angle operations in complex work scenarios such as tunnel excavation and stone quarrying.
[0015] 2. Multi-directional rotation function: The three-section boom is driven by the No. 1 double-head rotary reducer, which can rotate 360° around the second section of the boom; the No. 2 double-head rotary reducer further enables the rock drilling attachment to rotate 360°. This multi-directional rotation capability allows the boom to accurately adapt to drilling tasks in different directions, such as vertically downward, horizontal, and diagonal directions, greatly expanding the applicable scenarios.
[0016] 3. Compact Folding Design: Both the main boom and the two-section boom are foldable, and the folded size takes up less space, greatly facilitating transportation and passage through narrow areas. This design not only improves the portability of the equipment but also reduces transportation and storage costs.
[0017] 4. High-efficiency four-bar linkage: Through the coordinated work of the three-section boom cylinder, rocker arm, connecting rod, and slewing frame, a four-bar linkage is formed. This mechanism uses the slewing frame as the crank, the three-section boom as the frame, and the three-section boom cylinder as the power source, enabling flexible deployment and retraction of rock drilling attachments. It also optimizes the efficiency of attachment angle adjustment and improves the convenience of operation.
[0018] 5. Multifunctional attachment adaptability: The rotating and folding function of the boom allows it to install and drive a variety of attachments, adapting to different tasks such as tunnel drilling, stone quarrying, and slope protection, meeting diverse operational needs and improving the equipment's versatility and economy. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a three-fold multi-directional rotating working arm of a rock drilling rig proposed in this invention; Figure 2 This is a side view schematic diagram of a three-fold multi-directional rotating working arm of a rock drilling rig proposed in this invention; Figure 3 This is a top view schematic diagram of the three-fold multi-directional rotating working arm of a rock drilling rig proposed in this invention; Figure 4 This is a bottom view schematic diagram of the three-fold multi-directional rotating working arm of a rock drilling rig proposed in this invention.
[0020] In the diagram: 1. Base; 2. Boom cylinder; 3. Boom; 4. Second-section boom; 5. Second-section boom cylinder; 6. First mounting surface; 7. Third-section boom; 8. Third-section boom cylinder; 9. No. 1 double-head rotary reducer; 10. Connecting frame; 11. First mounting component; 12. Second mounting component; 13. Rotary frame; 14. Connecting rod; 15. Rocker arm; 16. No. 2 double-head rotary reducer; 17. Second mounting surface. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0022] Please see the appendix Figure 1 -Appendix Figure 4 A rock drilling rig with a three-fold multi-directional rotating boom includes: a base 1, a boom 3 hinged to the base 1, a connecting frame 10 hinged between the base 1 and the boom 3, a two-section boom 4 hinged to the other end of the boom 3, two boom cylinders 2 hinged to the two sides of the front end of the boom 3 below the two-section boom 4, the front ends of the two boom cylinders 2 being hinged to the connecting frame 10, a first mounting surface 6 welded to the front end of the two-section boom 4, a No. 1 double-head rotary reducer 9 fixedly mounted on the side of the first mounting surface 6, a three-section boom 7 welded to the front side of the first mounting surface 6, a rotary frame 13 hinged to the front end of the three-section boom 7, a second mounting surface 17 welded to the rotary frame 13, and a No. 2 double-head rotary reducer 16 fixedly mounted on the side of the second mounting surface 17.
[0023] Please see the appendix Figure 1-4 In a preferred embodiment, four spatial hinge points are formed between the base 1, the boom 3, the connecting frame 10 and the boom cylinder 2. The boom 3 is driven by two boom cylinders 2 to rotate around the base 1 at a maximum angle of 138°. Alternatively, the boom 3 can be completely folded and placed on the frame, forming a smaller spatial structure with the frame to achieve better passability and transportation convenience.
[0024] The boom 3 has a box-type structure. The front side is mounted on the base 1 to form a rotating pair. The boom 3 is folded on the frame or unfolded to 138° by the synchronous rotation of the boom cylinder 2 and the connecting frame 10. The rear side is the support point of the two-section boom 4.
[0025] Please see the appendix Figure 1-4 In a preferred embodiment, a first mounting member 11 is welded to the front side of the second arm 4, and a second arm cylinder 5 is hinged to the middle of the front end of the main arm 3 below the second arm 4. The front end of the second arm cylinder 5 is hinged to the first mounting member 11. The second arm 4 is driven by the second arm cylinder 5 to rotate around the main arm 3 at a maximum angle of 136°, and the second arm 4 can also be completely folded onto the main arm 3.
[0026] The two-section boom 4 is a box-type front fork structure. The front fork is mounted on the boom 3 to form a rotating pair. It is driven by the two-section boom cylinder 5 to fold on the boom 3 or unfold to 136°. The rear side is the first mounting surface 6 of the No. 1 double-head rotary reducer 9.
[0027] Please see the appendix Figure 1-4 In a preferred embodiment, the three-section boom 7 is driven by a No. 1 double-head rotary reducer 9 to rotate 360° around the two-section boom 4.
[0028] The three-section boom 7 has a box-type structure. The front side is the rotation surface of the No. 1 double-head rotary reducer 9, which can drive the No. 1 double-head rotary reducer 9 to rotate 360° around the two-section boom 4. The rear side is the junction point of the rotating pair of the four-bar linkage.
[0029] Please see the appendix Figure 1-4 In a preferred embodiment, a second mounting bracket 12 is welded to the tail end of the second arm 4, and a three-section arm cylinder 8 is hinged to the second mounting bracket 12. A rocker arm 15 is hinged to the lower front end of the second arm 4, and a connecting rod 14 is hinged to the other end of the rocker arm 15. The front end of the three-section arm cylinder 8 is hinged to the hinge point of the rocker arm 15 and the connecting rod 14, and the other end of the connecting rod 14 is hinged to the slewing frame 13.
[0030] Please see the appendix Figure 1-4 In a preferred embodiment, the three-section boom 7, the three-section boom cylinder 8, the rocker arm 15, the connecting rod 14, and the slewing frame 13 form a four-bar linkage structure, wherein the slewing frame 13 serves as the crank, the three-section boom 7 serves as the frame, and the three-section boom cylinder 8 serves as the power source.
[0031] Please see the appendix Figure 1-4 In a preferred embodiment, the auxiliary attachments fixedly installed on the No. 2 double-head rotary reducer 16 and the second mounting surface 17 are driven by the three-section boom cylinder 8 to fold downward or unfold upward.
[0032] Please see the appendix Figure 1-4 In a preferred embodiment, the attachment fixedly mounted on the second mounting surface 17 is driven by the No. 2 double-head rotary reducer 16 to rotate 360° around the rotary frame 13.
[0033] Four-bar linkage: The three-section boom 7 serves as the frame, the three-section boom cylinder 8 serves as the power source, and the slewing frame 13 serves as a crank, rocker arm 15, and connecting rod 14. This four-bar linkage drives the No. 2 double-head slewing reducer 16 and its attached accessories to fold downwards and unfold upwards.
[0034] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: the working arm has a total of 4 hydraulic cylinders, divided into three groups: The first set of hydraulic cylinders consists of two synchronous boom cylinders 2. The cylinder support is located on the side of the boom 3, and the cylinder thrust point is on the base 1. The reverse arrangement of the cylinders can obtain a greater cylinder thrust for the boom 3 and drive the boom 3 to rotate more than 90°, thereby increasing the working range during drilling.
[0035] The second set of cylinders is the two-section boom cylinder 5. The cylinder support is on the rear side of the boom 3, and the cylinder thrust point is on the rear side of the two-section boom 4. It is arranged in the forward direction, which drives the two-section boom 4 to fold and unfold, thereby increasing the working range when drilling.
[0036] The third set of cylinders is a three-section boom cylinder 8. The cylinder support is located on the front side of the three-section boom 7. The cylinder thrust point is on the rocker arm 15 fulcrum of the four-bar linkage mechanism, which drives the four-bar linkage mechanism to reciprocate and achieve angle adjustment when drilling downwards and forwards.
[0037] The No. 1 double-head rotary reducer 9 connects the two-section arm 4 and the three-section arm 7, allowing the three-section arm 7 to rotate 360 degrees around the two-section arm 4, thus enabling angle adjustment when drilling horizontally, diagonally upwards, and downwards.
[0038] The No. 2 double-head rotary reducer 16 connects the four-bar linkage rotary frame 13 and the rock drilling tool, enabling the rock drilling tool to rotate 360 degrees around the rotary frame 13, achieving vertical upward drilling and angle adjustment during horizontal drilling.
[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
[0040] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this specification. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A rock drilling rig with a three-fold, multi-directional rotating working arm, characterized in that, include: A base (1) is hinged to a boom (3). The same connecting frame (10) is hinged between the base (1) and the boom (3). A two-section boom (4) is hinged to the other end of the boom (3). Two boom cylinders (2) are hinged to the two sides of the front end of the boom (3) below the two-section boom (4). The front ends of the two boom cylinders (2) are hinged to the connecting frame (10). A first mounting surface (6) is welded to the front end of the two-section boom (4). A No. 1 double-head rotary reducer (9) is fixedly installed on the side of the first mounting surface (6). A three-section boom (7) is welded to the front side of the first mounting surface (6). A rotary frame (13) is hinged to the front end of the three-section boom (7). A second mounting surface (17) is welded to the rotary frame (13). A No. 2 double-head rotary reducer (16) is fixedly installed on the side of the second mounting surface (17).
2. The rock drilling rig with a three-fold multi-directional rotating working arm according to claim 1, characterized in that, Four spatial hinge points are formed between the base (1), the boom (3), the connecting frame (10) and the boom cylinder (2). The boom (3) is driven by two boom cylinders (2) to rotate around the base (1) at a maximum angle of 138°.
3. The rock drilling rig with a three-fold multi-directional rotating working arm according to claim 1, characterized in that, The front side of the two-section arm (4) is welded with a first mounting part (11). The middle part of the front end of the main arm (3) is hinged to the two-section arm cylinder (5) below the two-section arm (4). The front end of the two-section arm cylinder (5) is hinged to the first mounting part (11). The maximum angle at which the two-section arm (4) rotates around the main arm (3) driven by the two-section arm cylinder (5) is 136°.
4. The rock drilling rig with a three-fold multi-directional rotating working arm according to claim 1, characterized in that, The three-section arm (7) is driven by the No. 1 double-head rotary reducer (9) to rotate 360° around the two-section arm (4).
5. The rock drilling rig with a three-fold multi-directional rotating working arm according to claim 1, characterized in that, The tail end of the two-section boom (4) is welded with a second mounting bracket (12), and a three-section boom cylinder (8) is hinged on the second mounting bracket (12). A rocker arm (15) is hinged below the front end of the two-section boom (4), and a connecting rod (14) is hinged to the other end of the rocker arm (15). The front end of the three-section boom cylinder (8) is hinged to the hinge of the rocker arm (15) and the connecting rod (14), and the other end of the connecting rod (14) is hinged to the slewing frame (13).
6. The rock drilling rig with a three-fold multi-directional rotating working arm according to claim 5, characterized in that, The three-section arm (7), the three-section arm cylinder (8), the rocker arm (15), the connecting rod (14), and the slewing frame (13) form a four-bar linkage structure, in which the slewing frame (13) serves as the crank, the three-section arm (7) serves as the frame, and the three-section arm cylinder (8) serves as the power source.
7. A rock drilling rig with a three-fold multi-directional rotating working arm according to claim 6, characterized in that, The No. 2 double-head rotary reducer (16) and the attachments fixedly installed on the second mounting surface (17) are driven by the three-section boom cylinder (8) to fold downward or unfold upward.
8. A rock drilling rig with a three-fold multi-directional rotating working arm according to claim 7, characterized in that, The attachment fixed on the second mounting surface (17) is driven by the No. 2 double-head rotary reducer (16) to rotate 360° around the rotary frame (13).