Rotary drilling rig pressurized drilling backward inclination prevention device
By placing weighted iron blocks at the lower end of the mast of the rotary drilling rig and providing downforce with constant force springs and movable hooks, the problem of insufficient pressurization of the low-headroom rotary drilling rig is solved, and drilling efficiency is improved.
Patent Information
- Application Number
- CN202422690926.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In low clearance rotary excavation construction, the drill rod is short and light, which causes the rotary drilling rig to lean back when pressurized, and cannot effectively pressurize, affecting the drilling efficiency, especially in hard rocks.
Place the counterweight iron block at the lower end of the low clearance mast of the rotary drilling rig, and provide a fixed tension through a constant force spring and a movable hook. The counterweight iron block is connected with a wire rope to increase downforce and make up for the insufficient pressurization.
By adding the design of counterweight iron blocks and constant force springs, the rotary drilling rig can be effectively pressurized under low clearance conditions, improving drilling efficiency and practicality.
Smart Images
Figure CN223256757U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pressurized drilling and anti-tilt technology for rotary drilling rigs, and in particular to a pressurized drilling and anti-tilt device for rotary drilling rigs. Background Art
[0002] Currently, during the construction of the pile foundation project of the new Yangtze River High-speed Railway from Wuhan to Macheng, the project is close to the existing railway line. According to the railway department's regulations on construction height restrictions near the operating line, the equipment must use a low-clearance rotary drilling rig. When constructing piles with harder rocks, the low-clearance drilling rig has low drilling efficiency. Analysis shows that although the low-clearance rotary drilling rig is a large-scale equipment, the drill rod is short and light, and the drill rig obviously tilts back when drilling and pressurizing, resulting in ineffective pressurization. This is the main reason for the low drilling efficiency.
[0003] Therefore, during low-headroom rotary drilling construction, the drill rod is short and heavy, and the pressurization capacity of the guide rotary drilling rig is limited. Especially in hard rocks, when the rotary drilling rig cannot effectively pressurize, the drilling efficiency is affected and the drilling efficiency is very low.
[0004] To this end, the present application proposes a rotary drilling rig pressure drilling anti-tilt device. Utility Model Content
[0005] The present application proposes a rotary drilling rig pressurized drilling anti-tilt device to solve the problems raised in the above-mentioned background technology; by setting the anti-tilt device, a counterweight iron block is placed at the lower end of the low-headroom rotary drilling mast. When the rotary drill is drilling into the rock, a movable hook is used to hang the heavy object on the lower end of the mast to provide downward pressure for the rotary drill, thereby compensating for the problem of insufficient pressurization of the low-headroom rotary drill and greatly improving the practicality of the device.
[0006] In order to achieve the above objectives, this application adopts the following technical solutions:
[0007] A rotary drilling rig pressurized drilling anti-tilt device comprises a rotary drilling rig and an anti-tilt device, wherein the rotary drilling rig comprises a mast and a rotary drilling crawler, wherein the mast is arranged at the front end of the rotary drilling rig, and two rotary drilling crawlers are arranged at the bottom of the rotary drilling rig, and the anti-tilt device comprises a constant force spring, a movable hook, a steel wire rope and a counterweight iron block.
[0008] As a preferred embodiment, the constant force spring is connected to the bottom end of the mast of the rotary drilling rig by bolts, and the constant force spring and the mast are detachably connected;
[0009] Through a constant force spring, the spring can maintain a fixed tension applied to the lower end of the drilling rig mast. The tension is tentatively set at 5t, while meeting the telescopic stroke of at least 10cm to ensure that when the drilling rig is pressed down (the mast is lowered), the spring can be tightened to keep the tension unchanged, thereby improving the practicality of the device.
[0010] As a preferred embodiment, a movable hook is detachably connected to the bottom end of the constant force spring, and the movable hook is in a ring shape;
[0011] By setting up a movable hook, workers will hang the counterweight iron block on the movable hook and the constant force spring on the wire rope (the constant force spring is bolted and fixed to the bottom end of the mast in advance). The movable hook is manually hung when needed during drilling, and manually removed when not in use, thereby improving the practicality of the device.
[0012] As a preferred embodiment, the movable hook is provided with two steel ropes, and the steel ropes are installed on the movable hook by a rope clamp fixing method;
[0013] By setting up a steel wire rope, the counterweight iron block is connected to the movable hook on the constant force spring through the steel wire rope, and the mast is pressurized, thereby improving the practicality of the device.
[0014] As a preferred embodiment, a counterweight iron block is provided between the two rotary drilling crawlers of the rotary drilling rig;
[0015] By setting a counterweight iron block, the counterweight iron block is 10 tons, and the counterweight size (length, width, height) is temporarily 1.6m×1.2m×0.8m (which can be adjusted according to the actual space at the lower end of the drilling mast 11), thereby improving the practicality of the device.
[0016] As a preferred embodiment, the counterweight iron block is placed below the mast and between the two rotary drilling crawlers, and the front end of the counterweight iron block does not exceed the front end surface of the mast;
[0017] By placing a counterweight iron block at the lower end of the low-headroom drilling mast, a movable hook is used to hang a heavy object on the lower end of the mast when the drill drills into the rock, providing downward pressure for the drill drill, compensating for the problem of insufficient pressure in the low-headroom drill drill, and thus improving the practicality of the device.
[0018] As a preferred embodiment, the counterweight iron block comprises a pure iron frame and cast iron, and the pure iron frame is a hollow frame;
[0019] The counterweight iron block is a pure iron frame and cast iron filling. The counterweight iron block is placed below the mast and between the two rotary drilling crawlers. The front end of the counterweight iron block does not exceed the front end surface of the mast, thereby improving the practicality of the device.
[0020] As a preferred embodiment, the interior of the pure iron frame is filled with cast iron, and the cast iron is in the shape of a square block;
[0021] The counterweight iron block is a pure iron frame and cast iron filling. The counterweight iron block is placed below the mast and between the two rotary drilling crawlers. The front end of the counterweight iron block does not exceed the front end surface of the mast, thereby improving the practicality of the device.
[0022] Beneficial effects of this application:
[0023] 1. This rotary drilling rig pressure drilling anti-tilt device is equipped with an anti-tilt device. A counterweight iron block is placed at the lower end of the low-headroom drilling mast. When drilling into rock, a movable hook is used to hang a heavy object on the lower end of the mast to provide downward pressure for the drilling rig, thereby compensating for the problem of insufficient pressure in low-headroom drilling and greatly improving the practicality of the device.
[0024] 2. This is a pressurized drilling anti-tilt device for rotary drilling rigs. By placing a counterweight iron block at the lower end of the low-headroom rotary drilling mast and between the two rotary drilling crawlers, a constant-force spring can maintain a fixed tension applied to the lower end of the rotary drilling mast. The tension is tentatively set at 4-5 tons, and the telescopic stroke is at least 10 cm to ensure that when the rotary drilling is pressed down (the mast is lowered), the spring can be tightened to maintain the tension unchanged. The counterweight iron block is 10 tons, and the counterweight dimensions (length, width, height) are tentatively 1.6m×1.2m×0.8m (which can be adjusted according to the actual space at the lower end of the rotary drilling mast), which greatly improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the main body of the device of this application;
[0026] Figure 2 This is a schematic diagram of the anti-tilt device of the device of this application;
[0027] Figure 3 This is a top view of the counterweight iron block of the device of this application.
[0028] Numbers in the figure: 1. Rotary drilling rig; 11. Mast; 12. Rotary drilling crawler; 2. Anti-tilt device; 21. Constant force spring; 22. Movable hook; 23. Wire rope; 24. Counterweight iron block; 241. Pure iron frame; 242. Cast iron. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.
[0030] Reference Figure 1-3 A rotary drilling rig pressurized drilling anti-tilt device includes a rotary drilling rig 1 and an anti-tilt device 2. The rotary drilling rig 1 includes a mast 11 and a rotary drilling crawler 12. The mast 11 is arranged at the front end of the rotary drilling rig 1, and two rotary drilling crawlers 12 are arranged at the bottom of the rotary drilling rig 1.
[0031] The anti-backward tilt device 2 includes a constant force spring 21, a movable hook 22, a steel wire rope 23 and a counterweight iron block 24; by placing the counterweight iron block 24 at the lower end of the low-headroom drilling mast 11, when drilling into the rock, the movable hook 22 is used to hang a heavy object on the lower end of the mast 11 to provide downward force for the drilling, thereby compensating for the problem of insufficient pressure on the low-headroom drilling. (Note: This is to compensate for the problem of lightness and heaviness in the front caused by the shortening of the mast 11 and the drill rod when the original balance weight is not modified). Specifically, the low-headroom drilling mast 11 is A counterweight iron block 24 is placed between the lower end and the two rotary drilling crawlers 12. Through a constant force spring 21, the spring can maintain a fixed tension applied to the lower end of the rotary drilling mast 11. The tension is tentatively set at 4-5t, and at the same time, the telescopic stroke is at least 10cm to ensure that when the rotary drilling is pressed down (the mast 11 is lowered), the spring can be tightened to keep the tension unchanged. The counterweight iron block 24 is 10t, and the counterweight size (length, width, height) is temporarily 1.6m×1.2m×0.8m (which can be adjusted according to the actual space at the lower end of the rotary drilling mast 11).
[0032] The constant force spring 21 is connected to the bottom end of the mast 11 of the rotary drilling rig 1 by bolts, and the constant force spring 21 and the mast 11 are detachably connected. Through a constant force spring 21, the spring can maintain a fixed tension applied to the lower end of the rotary drilling mast 11, and the tension is tentatively set at 4-5t. At the same time, the telescopic stroke is at least 10cm to ensure that when the rotary drilling is pressed down (the mast 11 is lowered), the spring can be tightened to keep the tension unchanged, thereby improving the practicality of the device.
[0033] The bottom end of the constant force spring 21 is detachably connected to a movable hook 22, which is in a ring shape. By setting the movable hook 22, a worker hangs the counterweight iron block 24 on the movable hook 22 and the constant force spring 21 through the wire rope 23 (the constant force spring 21 is bolted and fixed to the bottom end of the mast 11 in advance). The movable hook 22 is manually hung when needed during drilling, and manually removed when not in use, thereby improving the practicality of the device.
[0034] Two steel wire ropes 23 are provided on the movable hook 22, and the steel wire ropes 23 are installed on the movable hook 22 by a rope clamp fixing method; by providing the steel wire ropes 23, the counterweight iron block 24 is connected to the movable hook 22 on the constant force spring 21 through the steel wire ropes 23, and the mast 11 is pressurized, thereby improving the practicality of the device.
[0035] A counterweight iron block 24 is provided between the two rotary drilling crawlers 12 of the rotary drilling rig 1; by providing the counterweight iron block 24, the counterweight iron block 24 is 10 tons, and the counterweight size (length, width, height) is temporarily 1.6m×1.2m×0.8m (which can be adjusted according to the actual space at the lower end of the rotary drilling mast 11), thereby improving the practicality of the device.
[0036] The counterweight iron block 24 is placed below the mast 11 and between the two rotary drilling tracks 12, and the front end of the counterweight iron block 24 does not exceed the front end surface of the mast 11; by placing the counterweight iron block 24 at the lower end of the low-headroom rotary drilling mast 11, when the rotary drilling is carried out into the rock, the movable hook 22 is used to hang the heavy object on the lower end of the mast 11 to provide downward force for the rotary drilling, thereby compensating for the problem of insufficient pressure in the low-headroom rotary drilling, thereby improving the practicality of the device.
[0037] The counterweight iron block 24 includes a pure iron frame 241 and cast iron 242, and the pure iron frame 241 is a hollow frame. The counterweight iron block 24 is a pure iron frame 241 filled with cast iron 242, and the counterweight iron block 24 is placed under the mast 11 and between the two rotary drilling tracks 12. The front end of the counterweight iron block 24 does not exceed the front end face of the mast 11, thereby improving the practicality of the device.
[0038] The interior of the pure iron frame 241 is filled with cast iron 242, which is a square block. The counterweight iron block 24 is used to form a pure iron frame 241 and fill it with cast iron 242. The counterweight iron block 24 is placed below the mast 11 and between the two rotary drilling tracks 12. The front end of the counterweight iron block 24 does not exceed the front end face of the mast 11, thereby improving the practicality of the device.
[0039] Working principle: Before the rotary drilling rig 1 is aligned, a crane is used to place the counterweight iron block 24 next to the casing to adapt to the rotary drilling station. When the rotary drilling rig enters the rock formation and needs to be pressurized for drilling, the worker hangs the counterweight iron block 24 on the movable hook 22 on the wire rope 23 and the constant force spring 21 (the constant force spring 21 is bolted and fixed to the bottom end of the mast 11 in advance). The movable hook 22 is manually hung when it is needed during drilling, and the hook is manually removed when it is not in use.
[0040] By placing a counterweight iron block 24 at the lower end of the low-headroom drilling mast 11, when drilling into rock, a heavy object is hung on the lower end of the mast 11 using a movable hook 22 to provide downward force for the drilling, thereby compensating for the problem of insufficient pressure on the low-headroom drilling. (It should be noted that this is done without modifying the original balance weight to compensate for the problem of lightness and heaviness at the front caused by the shortening of the mast 11 and the drill rod).
[0041] Specifically, a counterweight iron block 24 is placed at the lower end of the low-headroom drilling mast 11 and between the two drilling crawlers 12. Through a constant force spring 21, the spring can maintain a fixed tension applied to the lower end of the drilling mast 11. The tension is tentatively set at 4-5t, and at the same time, the telescopic stroke is at least 10cm to ensure that when the drilling is pressed down (the mast 11 is lowered), the spring can be tightened to keep the tension unchanged. The counterweight iron block 24 is 10t, and the counterweight size (length, width, height) is temporarily 1.6m×1.2m×0.8m (which can be adjusted according to the actual space at the lower end of the drilling mast 11).
[0042] The counterweight iron block 24 is a pure iron frame 241 filled with cast iron 242. The counterweight iron block 24 is placed below the mast 11 and between the two rotary drilling crawlers 12. The front end of the counterweight iron block 24 does not exceed the front end surface of the mast 11.
[0043] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present application within the technical scope disclosed in the present application, and they should be covered by the protection scope of the present application.
Claims
1. A rotary drilling rig pressure drilling anti-backward tilt device, comprising a rotary drilling rig (1) and an anti-backward tilt device (2), characterized in that: The rotary drilling rig (1) comprises a mast (11) and a rotary drilling crawler (12), wherein the mast (11) is arranged at the front end of the rotary drilling rig (1), and two rotary drilling crawlers (12) are arranged at the bottom of the rotary drilling rig (1), and the anti-backward tilt device (2) comprises a constant force spring (21), a movable hook (22), a steel wire rope (23) and a counterweight iron block (24).
2. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 1, characterized in that: The constant force spring (21) is connected to the bottom end of the mast (11) of the rotary drilling rig (1) via bolts, and the constant force spring (21) and the mast (11) are detachably connected.
3. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 1, characterized in that: A movable hook (22) is detachably connected to the bottom end of the constant force spring (21), and the movable hook (22) is in a ring shape.
4. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 3, characterized in that: Two steel wire ropes (23) are provided on the movable hook (22), and the steel wire ropes (23) are installed on the movable hook (22) by a rope clamp fixing method.
5. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 1, characterized in that: A counterweight iron block (24) is provided between the two rotary drilling crawlers (12) of the rotary drilling rig (1).
6. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 5, characterized in that: The counterweight iron block (24) is placed below the mast (11) and between the two rotary drilling crawlers (12), and the front end of the counterweight iron block (24) does not exceed the front end surface of the mast (11).
7. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 5, characterized in that: The counterweight iron block (24) comprises a pure iron frame (241) and cast iron (242), and the pure iron frame (241) is a hollow frame.
8. The anti-backward tilt device for pressurized drilling of a rotary drilling rig according to claim 7, characterized in that: The interior of the pure iron frame (241) is filled with cast iron (242), and the cast iron (242) is in the shape of a square block.