A drilling rig power head with buffer and shock absorption function

Abstract

This utility model relates to the field of drilling rig power head technology, and discloses a drilling rig power head with buffering and shock absorption function. It includes a power head housing, a buffer mechanism fixedly connected to the right side of the power head housing for reducing impact vibration, and a fixing mechanism fixedly connected to the front side of the power head housing for quickly opening and closing the power head housing. The buffer mechanism includes a buffer housing, a movable cover slidably connected to the inner wall of the buffer housing, a main spring fixedly connected to the center of the movable cover, and multiple buffer components fixedly connected at equal intervals to the left side of the outer wall of the movable cover. In this utility model, when the drilling rig power head vibrates, the driven rod drives the outer ring to press the movable cover of the buffer mechanism, causing it to slide within the buffer housing. The buffer mechanism, relying on the sliding of the movable cover and the assistance of multiple buffer components, effectively avoids the axial position deviation problem that easily occurs when relying solely on springs and shock-absorbing rings.

Description

Technical Field

[0001] This utility model relates to the field of drilling rig power head technology, and in particular to a drilling rig power head with buffer and shock absorption function. Background Technology

[0002] The drilling rig power head is the core power output and execution component of the drilling rig system. Its core function is to convert the energy of the power source into rotational torque and axial thrust to drive the drill bit to complete drilling, reaming, sampling, or formation cutting operations. The drilling rig power head with buffer and shock absorption function is a core execution component that integrates shock absorption structures such as springs, hydraulic dampers, or rubber buffers on the basis of the traditional drilling rig power head. It can convert the energy of the power source into rotational torque and axial thrust, while absorbing the impact of the formation and the vibration of the drill bit during drilling, reducing the wear and tear on the power head components and the transmission of vibration, adapting to complex formations, and improving drilling stability and equipment life.

[0003] When a drilling rig power head with buffer and vibration damping function is working, the power source first outputs rotational torque and axial thrust through the transmission mechanism to drive the drilling tool. However, existing drilling rig power heads generate vibration during operation. Vibration can cause bolt breakage, shearing, damage to bearings and oil seals, gear tooth breakage, and wear. The existing solution is to use a combination of springs and rubber damping rings. The springs absorb vibration, and the damping rings suppress the rebound after the springs absorb the vibration. At the same time, the sound-absorbing insulation layer inside the damping rings can also absorb noise. However, when the drilling rig power head has high requirements for axial drilling accuracy, the axial displacement control capability of the spring and rubber damping ring combination structure is weak. The axial deformation of the spring changes linearly with the load, and the power head will have a continuous axial position deviation. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a drilling rig power head with buffer and shock absorption function, which aims to improve the problem of weak axial displacement control capability of the combination of spring and rubber shock absorber ring in the prior art, resulting in deviation in drilling position.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a drilling rig power head with buffering and shock absorption function, comprising a power head housing, a buffer mechanism fixedly connected to the right side of the power head housing, the buffer mechanism being used to reduce impact vibration, a fixing mechanism fixedly connected to the front side of the power head housing, the fixing mechanism being used to quickly close and open the power head housing; the buffer mechanism includes a buffer housing, the left side of the buffer housing being fixedly connected to the right side of the power head housing, a movable cover slidably connected to the inner wall of the buffer housing, a main spring fixedly connected to the center of the movable cover, the left side of the main spring being fixedly connected to the right side of the inner wall of the buffer housing, and multiple buffer components fixedly connected at equal intervals to the left side of the outer wall of the movable cover.

[0006] As a further description of the above technical solution:

[0007] The buffer assembly includes a liquid storage chamber, and multiple liquid storage chambers are installed inside the buffer housing. The inner wall of each liquid storage chamber is slidably connected with a perforated plate. A hydraulic rod is fixedly connected to the left side of each perforated plate. A buffer spring is fixedly connected to the left side of each liquid storage chamber. The inside of each buffer spring is installed on the outer wall of the hydraulic rod. The left side of each buffer spring is fixedly connected to the left side of the inner wall of the buffer housing.

[0008] As a further description of the above technical solution:

[0009] The fixing mechanism includes a small outer shell, the rear side of which is fixedly connected to the front side of the power head shell. A sliding block is fixedly connected to the bottom of the inner wall of the small outer shell, and a locking rod is slidably connected to the top of the sliding block. A spring is fixedly connected to the left side of the locking rod, a guide post is installed inside the spring, and a locking head is installed on the top of the locking rod.

[0010] As a further description of the above technical solution:

[0011] A cover is rotatably connected to the top of the power head housing, and the front side of the cover is fixedly connected to the rear side of the locking head.

[0012] As a further description of the above technical solution:

[0013] A motor is fixedly connected to the left side of the power head housing, and a controller is fixedly connected to the front side of the motor.

[0014] As a further description of the above technical solution:

[0015] The output end of the motor is fixedly connected to a moving rod, which is rotatably connected inside the power head housing and the buffer mechanism.

[0016] As a further description of the above technical solution:

[0017] A driven rod is installed on the right side of the moving rod, and an outer ring is fixedly connected to the left side of the outer wall of the driven rod.

[0018] As a further description of the above technical solution:

[0019] A mounting plate is fixedly connected to the bottom of the power head housing, and bolts are threaded to the bottom of the mounting plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when the power head of the drilling rig vibrates, the driven rod drives the outer ring to squeeze the moving cover of the buffer mechanism, causing it to slide inside the buffer housing. The buffer mechanism relies on the sliding of the moving cover and the assistance of multiple buffer components to effectively avoid the axial position deviation problem that is easy to occur when relying solely on springs and shock absorbers.

[0022] 2. In this utility model, when it is necessary to close the power head housing, the cover is moved to drive the locking head and locking rod to be locked together. When it is necessary to unlock and fix, the locking rod is pressed down and the locking head is released under the contraction of the spring, thereby realizing the quick locking and opening of the power head housing. Attached Figure Description

[0023] Figure 1 This is a front view of a drilling rig power head with buffer and shock absorption function proposed in this utility model;

[0024] Figure 2 This is a perspective view of a drilling rig power head with buffer and shock absorption function proposed in this utility model;

[0025] Figure 3 This is a partial structural cross-sectional view of a drilling rig power head with buffer and shock absorption function proposed in this utility model;

[0026] Figure 4 This is a structural cross-sectional view of a drilling rig power head with buffer and shock absorption function proposed in this utility model;

[0027] Figure 5 This is a structural exploded view of a drilling rig power head with buffer and shock absorption function proposed in this utility model.

[0028] Legend:

[0029] 1. Power head housing; 2. Buffer mechanism; 201. Buffer housing; 202. Movement cover; 203. Main spring; 204. Buffer assembly; 2041. Liquid storage tank; 2042. Perforated plate; 2043. Hydraulic rod; 2044. Buffer spring; 3. Fixing mechanism; 301. Small housing; 302. Slide block; 303. Locking rod; 304. Spring 1; 305. Guide post; 306. Locking head; 4. Movement rod; 5. Driven rod; 6. Outer ring; 7. Box cover; 8. Motor; 9. Controller; 10. Mounting plate; 11. Bolt. Detailed Implementation

[0030] 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.

[0031] Reference Figure 3 and Figure 4 This utility model provides an embodiment of a drilling rig power head with buffering and shock absorption function, including a power head housing 1. A buffer mechanism 2 is fixedly connected to the right side of the power head housing 1 to reduce impact vibration. A fixing mechanism 3 is fixedly connected to the front side of the power head housing 1 to quickly open and close the power head housing 1. The buffer mechanism 2 includes a buffer housing 201, the left side of which is fixedly connected to the right side of the power head housing 1. A moving cover 202 is slidably connected to the inner wall of the buffer housing 201. A main spring 203 is fixedly connected to the middle of the moving cover 202. The left side of the main spring 203 is fixedly connected to... Multiple buffer components 204 are fixedly connected at equal intervals on the right side of the inner wall of the buffer housing 201 and the left side of the outer wall of the moving cover 202. Each buffer component 204 includes a liquid storage tank 2041. Multiple liquid storage tanks 2041 are installed inside the buffer housing 201. A perforated plate 2042 is slidably connected to the inner wall of each liquid storage tank 2041. A hydraulic rod 2043 is fixedly connected to the left side of each perforated plate 2042. A buffer spring 2044 is fixedly connected to the left side of each liquid storage tank 2041. The interior of each buffer spring 2044 is installed on the outer wall of the hydraulic rod 2043. The left side of each buffer spring 2044 is fixedly connected to the left side of the inner wall of the buffer housing 201.

[0032] Specifically, when the drill rig's power head vibrates, the driven rod 5 drives the outer ring 6 to press the moving cover 202 of the buffer mechanism 2, causing the moving cover 202 to slide within the buffer housing 201. This, in turn, causes the main spring 203 and the liquid storage tank 2041 to move backward. At this time, the perforated plate 2042 sliding within the liquid storage tank 2041 reduces the overall backward movement of the moving cover 202 through liquid damping. Simultaneously, the buffer spring 2044, fixed between the liquid storage tank 2041 and the buffer housing 201, further enhances the buffering effect. After the vibration ends... The perforated plate 2042 fixed on the hydraulic rod 2043 moves slowly inside the liquid storage tank 2041, gradually consuming energy through liquid damping, thereby reducing the rebound force of the main spring 203 and the buffer spring 2044 and avoiding secondary vibration. This structure forms a composite buffer system through the stable sliding of the moving cover 202 in the buffer housing 201, in conjunction with the synergistic effect of multiple buffer components 204. This effectively solves the problem of axial position deviation that is easy to occur when relying solely on springs and shock absorbers, and improves the vibration damping stability of the drilling rig power head.

[0033] Reference Figure 2 and Figure 5The fixing mechanism 3 includes a small outer shell 301. The rear side of the small outer shell 301 is fixedly connected to the front side of the power head outer shell 1. A sliding block 302 is fixedly connected to the bottom of the inner wall of the small outer shell 301. A locking rod 303 is slidably connected to the top of the sliding block 302. A spring 304 is fixedly connected to the left side of the locking rod 303. A guide post 305 is installed inside the spring 304. A locking head 306 is installed on the top of the locking rod 303. A cover 7 is rotatably connected to the top of the power head outer shell 1. The front side of the cover 7 is fixedly connected to the rear side of the locking head 306.

[0034] Specifically, when the power head housing 1 is closed, the cover 7 will drive the locking head 306, which is fixed to it, to move synchronously and gradually approach the small housing 301 fixed on the power head housing 1. As the angled head at the bottom of the locking head 306 presses the locking rod 303, the locking rod 303 will move along the guide of the slide block 302 and press the spring 304. The guide post 305 inside the spring 304 can prevent the spring 304 from shifting in the middle when it is pressed, ensuring that its deformation direction is stable. When the locking head 306 is fully in the locked position, the locking rod 303 is no longer pressed, and the spring 304 will release its elastic force to push the locking rod 303 to reset, thereby firmly locking the power head housing 1 and the cover 7. If it is necessary to unlock the power head housing 1, simply press down the locking rod 303 to release it from the constraint of the locking head 306, thereby releasing the locking head 306 and separating the cover 7 from the power head housing 1. This structure achieves rapid locking and opening of the power head housing 1 through the cooperation of mechanical linkage and spring reset, making the operation convenient and efficient.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A motor 8 is fixedly connected to the left side of the power head housing 1. A controller 9 is fixedly connected to the front side of the motor 8. A moving rod 4 is fixedly connected to the output end of the motor 8. The moving rod 4 is rotatably connected inside the power head housing 1 and the buffer mechanism 2. A driven rod 5 is installed on the right side of the moving rod 4. An outer ring 6 is fixedly connected to the left side of the outer wall of the driven rod 5. A mounting plate 10 is fixedly connected to the bottom of the power head housing 1. A bolt 11 is threadedly connected to the bottom of the mounting plate 10.

[0036] Specifically, when the controller 9 starts the motor 8, the motor 8 drives the motion rod 4, which is fixed to its output end, to rotate synchronously inside the power head housing 1 and the buffer mechanism 2, thereby driving the driven rod 5 to move accordingly, realizing the transmission and conversion of power. In addition, the mounting plate 10 fixed to the bottom of the power head housing 1, together with the bolts 11, can firmly fix the power head housing 1 to the equipment, ensuring that the power head will not be displaced due to vibration or force during operation, thus ensuring the stability of the overall operation.

[0037] Working principle: When the drill rig power head vibrates, the driven rod 5 drives the outer ring 6 to press and slide the moving cover 202 in the buffer mechanism 2, causing the moving cover 202 to slide inside the buffer housing 201. This causes the main spring 203 and the liquid storage tank 2041 to move backward. The perforated plate 2042 sliding in the liquid storage tank 2041 reduces the overall backward movement of the moving cover 202. The buffer spring 2044 fixed in the liquid storage tank 2041 and the buffer housing 201 increases the buffering effect. As the vibration ends, the perforated plate 2042 fixed on the hydraulic rod 2043 slowly moves inside the liquid storage tank 2041, thereby reducing the rebound force of the main spring 203 and the buffer spring 2044. Because the moving cover 202 slides inside the buffer housing 201, plus the assistance of multiple buffer components 204, the axial position deviation caused by only springs and shock absorbers is effectively avoided.

[0038] When the power head housing 1 is closed, the cover 7 is brought close to the locking head 306 fixed to it, which is near the small housing 301 fixed to the power head housing 1. As the bottom bevel of the locking head 306 presses the locking rod 303, the locking rod 303 moves along the slide block 302 to compress the spring 304. The guide post 305 inside the spring 304 prevents the middle of the spring 304 from shifting. As the locking head 306 enters the locking rod 303, the spring 304 is released, thereby locking the power head housing 1 and the cover 7. When it is necessary to unlock the power head housing 1, the locking rod 303 is pressed to release the locking head 306, thereby achieving the purpose of quickly locking and opening the power head housing 1.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drilling rig power head with buffer and shock absorption function, comprising a power head housing (1), characterized in that: A buffer mechanism (2) is fixedly connected to the right side of the power head housing (1). The buffer mechanism (2) is used to reduce impact vibration. A fixing mechanism (3) is fixedly connected to the front side of the power head housing (1). The fixing mechanism (3) is used to quickly close and open the power head housing (1). The buffer mechanism (2) includes a buffer housing (201), the left side of which is fixedly connected to the right side of the power head housing (1). A motion cover (202) is slidably connected to the inner wall of the buffer housing (201). A main spring (203) is fixedly connected to the middle of the motion cover (202). The left side of the main spring (203) is fixedly connected to the right side of the inner wall of the buffer housing (201). Multiple buffer components (204) are fixedly connected at equal intervals to the left side of the outer wall of the motion cover (202).

2. The drilling rig power head with buffer and shock absorption function according to claim 1, characterized in that: The buffer assembly (204) includes a liquid storage chamber (2041), and multiple liquid storage chambers (2041) are installed inside the buffer shell (201). The inner wall of each liquid storage chamber (2041) is slidably connected with a perforated plate (2042). The left side of each perforated plate (2042) is fixedly connected with a hydraulic rod (2043). The left side of each liquid storage chamber (2041) is fixedly connected with a buffer spring (2044). The inside of each buffer spring (2044) is installed on the outer wall of the hydraulic rod (2043). The left side of each buffer spring (2044) is fixedly connected to the left side of the inner wall of the buffer shell (201).

3. A drilling rig power head with buffer and shock absorption function according to claim 1, characterized in that: The fixing mechanism (3) includes a small outer shell (301), the rear side of which is fixedly connected to the front side of the power head shell (1). A sliding block (302) is fixedly connected to the bottom of the inner wall of the small outer shell (301), and a locking rod (303) is slidably connected to the top of the sliding block (302). A spring (304) is fixedly connected to the left side of the locking rod (303), and a guide post (305) is installed inside the spring (304). A locking head (306) is installed on the top of the locking rod (303).

4. A drilling rig power head with buffer and shock absorption function according to claim 1, characterized in that: The top of the power head housing (1) is rotatably connected to a cover (7), and the front side of the cover (7) is fixedly connected to the rear side of the locking head (306).

5. A drilling rig power head with buffer and shock absorption function according to claim 1, characterized in that: A motor (8) is fixedly connected to the left side of the power head housing (1), and a controller (9) is fixedly connected to the front side of the motor (8).

6. A drilling rig power head with buffer and shock absorption function according to claim 5, characterized in that: The output end of the motor (8) is fixedly connected to a moving rod (4), which is rotatably connected inside the power head housing (1) and the buffer mechanism (2).

7. A drilling rig power head with buffer and shock absorption function according to claim 6, characterized in that: A driven rod (5) is installed on the right side of the moving rod (4), and an outer ring (6) is fixedly connected to the left side of the outer wall of the driven rod (5).

8. A drilling rig power head with buffer and shock absorption function according to claim 1, characterized in that: The bottom of the power head housing (1) is fixedly connected to a mounting plate (10), and the bottom of the mounting plate (10) is threaded with a bolt (11).

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