Drilling protection device of rotary drilling rig

Abstract

The utility model discloses a drilling protection device of a rotary drilling rig. The drilling protection device comprises a control device, a vehicle body, a drilling frame, a drilling rod, a drilling driving motor, a rotary driving motor, a crawler walking driving motor, a position sensor used for detecting whether the drilling rod is reset or not and an operation table arranged in a cab of the vehicle body. According to the utility model, the first control handle and the second control handle cannot be operated at the same time and are matched with the rollers to respectively trigger the first button switch and the second button switch to respectively control the power-on and power-off of the drilling driving motor, the rotary driving motor and the crawler walking driving motor, so that the safety during drilling is greatly improved; and when the right cavity is in a power-on state and the drilling driving motor is started, the position sensor loses a signal after the drill rod leaves the initial position, then the control device drives the electric telescopic rod extending shaft to extend out, the cover plate is limited by the limiting block and the electric telescopic rod extending shaft, and a good protection effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of rotary drilling rig technology, and in particular to a drilling protection device for rotary drilling rigs. Background Technology

[0002] Rotary drilling rigs are construction machinery used in building engineering for hole-forming operations. These rigs, when used with different drilling tools, are mainly used for hole-forming operations in soil layers such as sand, cohesive soil, and silty soil. They can also be equipped with long spiral drills, diaphragm wall grab buckets, vibratory pile hammers, etc., to achieve multiple functions. They are mainly used in foundation construction for municipal construction, highway bridges, industrial and civil buildings, diaphragm walls, water conservancy, seepage prevention and slope protection, etc. They are widely used in various foundation constructions such as cast-in-place piles, diaphragm walls, and foundation reinforcement, and can meet the requirements of various large-scale foundation constructions.

[0003] Rotary drilling rigs typically include a hydraulically tracked telescopic chassis, a self-lifting and folding mast, a telescopic drill rod, automatic verticality detection and adjustment, and a digital display of hole depth. The entire machine is generally operated using hydraulic pilot control and load sensing, offering easy and comfortable operation. The drive motors of a rotary drilling rig include a drilling drive motor, a slewing drive motor, a left track travel drive motor, and a right track travel drive motor, each controlled by a corresponding pilot control handle. The main drilling process of a rotary drilling rig is as follows: After the rotary drilling rig is positioned and a casing is installed, once the drill bit lightly touches the ground, the drilling drive motor is started, and the drill bit rotates to begin drilling. When the drill bit is full of soil and sand, it is first lifted out of the hole, and then the slewing drive motor is started to rotate the rotary drilling rig back. After emptying the soil and sand from the drill bit, the rotary drilling rig returns to its original position, and the drilling operation is repeated until the expected depth is reached.

[0004] In actual operation of rotary drilling rigs, novice operators are prone to misoperation, causing equipment damage or even injury. During drilling, simply activate the pilot control handle of the drilling drive motor to rotate the drill bit; rotation or changing direction is not permitted during drilling. However, some novices, due to nervousness or unfamiliarity with the equipment, may accidentally step on the travel pedal, activating both the left and right track drive motors, causing the entire machine to move. Alternatively, they may unintentionally touch the slewing handle, activating the slewing drive motor and causing the chassis to rotate while the drill rod remains inside the hole. In such cases, whether the entire machine moves or rotates, the connection between the mast and frame may be damaged or cracked, potentially causing the mast to detach and tip over, the drill rod to fall, and the top wheel to deform, resulting in serious consequences, including injury or death. Therefore, there are publicly available technologies for rotary drilling rigs... The protection device includes a drilling drive motor, a slewing drive motor, a left track travel drive motor, and a right track travel drive motor. Each drive motor's inlet pipeline is equipped with a hydraulically controlled directional valve for controlling its operating status and a pilot control handle for controlling the hydraulically controlled directional valve's oil supply. Each inlet pipeline between the pilot control handle and the hydraulically controlled directional valve is equipped with a shuttle valve and a check valve to prevent hydraulic oil backflow. The output ends of the check valves in the slewing, left track travel, and right track travel inlet pipelines are connected to the return oil sump via the hydraulic oil circuit of the hydraulically controlled directional valve. This technology can, to a certain extent, prevent operator error from damaging the rotary drilling rig and further extend its service life.

[0005] However, the above-mentioned technologies mainly rely on modifying hydraulic pipelines for drilling protection, which is too complex and difficult to implement. Therefore, it is necessary to provide a drilling protection device for rotary drilling rigs that is simple in structure, easy to operate, and safe and reliable. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a drilling protection device for rotary drilling rigs.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a rotary drilling rig drilling protection device, comprising a control device, a vehicle body, a drill frame, a drill rod, a drilling drive motor, a rotary drive motor, a crawler travel drive motor, a position sensor for detecting whether the drill rod has reset, and an operating platform disposed inside the driver's cab of the vehicle body. A trough is provided on the front wall of the operating platform, and a partition is fixedly connected to the inner side wall of the trough at a central position in the left-right direction. The trough is divided into a left chamber and a right chamber distributed to the left and right by the partition. A cover plate is slidably connected to the opening of the trough, and a control device for the rotary drive motor is provided on the inner rear wall of the left chamber. The second control handle for the operation of the drilling drive motor is provided. The rear wall of the right chamber is provided with a first control handle for controlling the operation of the drilling drive motor. The rear wall of the left chamber is provided with a second push-button switch. The rear wall of the right chamber is provided with a first push-button switch. A connecting seat is fixedly connected to the rear wall of the cover plate. The front wall of the partition plate is provided with an opening for the connecting seat to pass through. The end of the connecting seat away from the cover plate is provided with a triggering structure for triggering the first push-button switch and the second push-button switch. A limiting structure is provided between the connecting seat and the rear wall of the left chamber. An adsorption structure is provided between the cover plate and the inner wall of the settling tank for adsorption and fixation.

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

[0009] The second button switch is located on the inner rear wall of the left chamber and above the second control handle. The circuits of the rotary drive motor and the track travel drive motor are controlled by the second button switch. The first button switch is located on the inner rear wall of the right chamber and above the first control handle. The circuits of the drilling drive motor are controlled by the first button switch. The second button switch and the first button switch are located on the left and right sides of the opening, respectively. Both the first button switch and the second button switch are normally open, non-self-retracting button switches.

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

[0011] The triggering structure is a roller, which is rotatably connected to the end of the connecting seat away from the cover plate. When the cover plate covers the left chamber, the roller abuts against the second button switch, and when the cover plate covers the right chamber, the roller abuts against the first button switch.

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

[0013] The limiting structure includes a limiting block and an electric telescopic rod. The electric telescopic rod is fixedly connected to the rear wall of the operating table. The extension shaft of the electric telescopic rod passes through the rear wall of the operating table and extends into the left cavity. The extension shaft of the electric telescopic rod is located to the right of the second button switch when viewed from the front. The electric telescopic rod is electrically connected to the control device and the position sensor. The limiting block is fixedly connected to the right wall of the connecting seat.

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

[0015] The adsorption structure includes two sets of first magnetic blocks and second magnetic blocks. The two sets of first magnetic blocks are respectively fixedly connected to the left end of the cover plate and the inner left wall of the sedimentation tank and are opposite to each other. The magnetic properties of the two sets of first magnetic blocks on opposite sides are opposite. The two sets of second magnetic blocks are respectively fixedly connected to the right end of the cover plate and the inner right wall of the sedimentation tank and are opposite to each other. The magnetic properties of the two sets of second magnetic blocks on opposite sides are opposite.

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

[0017] The inner upper and lower walls of the settling tank, located near the front wall of the operating table, are provided with sliding grooves. The cover plate is slidably connected to the two sets of sliding grooves, and the width of the cover plate in the left and right directions can completely cover the left or right chamber.

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

[0019] The front wall of the cover plate is fixedly connected to a handle for facilitating the left and right movement of the cover plate.

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

[0021] 1. Compared with the prior art, the drilling protection device of this rotary drilling rig has a settling tank on the operating platform, which is divided into a left chamber and a right chamber by a partition. The first control handle and the second control handle are respectively set in the left chamber and the right chamber and are covered by a cover plate, so that the first control handle and the second control handle cannot be operated at the same time. With the help of rollers, the first button switch and the second button switch are triggered respectively to control the power supply of the drilling drive motor, the slewing drive motor and the crawler travel drive motor, which greatly improves the safety during drilling, physically prevents misoperation, and has a simple structure that is easy to implement.

[0022] 2. Compared with the existing technology, the drilling protection device of this rotary drilling rig, when the right chamber is energized and the drilling drive motor is activated, the position sensor loses the signal after the drill rod leaves the initial position, which causes the control device to drive the electric telescopic rod extension shaft to extend. At this time, the cover plate is limited by the limit block and the electric telescopic rod extension shaft and cannot move to the right, thus playing a better protective role. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a rotary drilling rig drilling protection device with a cover plate covering the left chamber, as proposed in this utility model.

[0024] Figure 2 This is a schematic diagram of the overall structure of a rotary drilling rig drilling protection device with a cover plate covering the right chamber, as proposed in this utility model.

[0025] Figure 3 This is a partial top sectional view of the operating platform and cover plate connection structure of a rotary drilling rig drilling protection device proposed in this utility model.

[0026] Legend:

[0027] 1. Operating platform; 2. Settling tank; 3. Slide chute; 4. Partition; 5. Opening; 6. Cover plate; 7. Handle; 8. First magnetic block; 9. First push-button switch; 10. First control handle; 11. Second magnetic block; 12. Second push-button switch; 13. Second control handle; 14. Electric telescopic rod; 15. Connecting seat; 16. Roller; 17. Limit block. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1 to 3 The present invention provides a rotary drilling rig drilling protection device, including a control device, a vehicle body, a drill frame, a drill rod, a drilling drive motor, a rotary drive motor, a crawler travel drive motor, a position sensor for detecting whether the drill rod has been reset, and an operating platform 1 installed in the cab of the vehicle body. In this embodiment, the above structure is consistent with the prior art. The technical solution of this embodiment only improves the structure of the operating platform 1 and protects the drill rod drilling process through physical error prevention.

[0030] like Figure 1 , Figure 2 As shown, in order to operate only one chamber at a time, a trough 2 is provided on the front wall of the operating table 1. A partition 4 is fixedly connected to the inner wall of the trough 2 at the center position in the left-right direction. The trough 2 is divided into a left chamber and a right chamber distributed to the left and right by the partition 4. A cover plate 6 is slidably connected to the opening of the trough 2. The upper inner wall and the lower inner wall of the trough 2 are provided with sliding grooves 3 at the position close to the front wall of the operating table 1. The cover plate 6 is slidably connected to the two sets of sliding grooves 3. The width of the cover plate 6 in the left-right direction can completely cover the left chamber or the right chamber. A handle 7 is fixedly connected to the front wall of the cover plate 6 for convenient pushing the cover plate 6 to move left and right. The cover plate 6 can be moved left and right along the sliding grooves 3 by the handle 7. When it is moved to the front wall of the left chamber, only the right chamber can be operated. When it is moved to the front wall of the right chamber, only the left chamber can be operated.

[0031] like Figure 1 , Figure 2 as well as Figure 3As shown, in order to control the rotary drive motor, the track drive motor and the drilling drive motor respectively, a second control handle 13 for controlling the rotary drive motor is provided on the rear wall of the left chamber, and a first control handle 10 for controlling the drilling drive motor is provided on the rear wall of the right chamber. By setting the cover plate 6, only one of the first control handle 10 and the second control handle 13 can be operated at a time, thus preventing the rotary drive motor from being started during drilling.

[0032] like Figure 1 , Figure 2 as well as Figure 3 As shown, to further improve operational safety, a second push-button switch 12 is provided on the rear wall of the left chamber, and a first push-button switch 9 is provided on the rear wall of the right chamber. The second push-button switch 12 is located on the rear wall of the left chamber and above the second control handle 13. The circuit switching of the rotary drive motor and the track travel drive motor is controlled by the second push-button switch 12. The first push-button switch 9 is located on the rear wall of the right chamber and above the first control handle 10. The circuit switching of the drilling drive motor is controlled by the first push-button switch 9. The second push-button switch 12 and the first push-button switch 9 are located on the left and right sides of the opening 5, respectively. Both the first push-button switch 9 and the second push-button switch 12 are normally open, non-self-retracting push-button switches. A connecting seat 15 is fixedly connected to the rear wall of the cover plate 6. An opening 5 is provided on the front wall of the partition plate 4 for the connecting seat 15 to pass through. A triggering structure for triggering the first push-button switch 9 and the second push-button switch 12 is provided at the end of the connecting seat 15 away from the cover plate 6. The triggering structure is a roller 16, which is rotatably connected to the end of the connecting seat 15 away from the cover plate 6. When the left chamber is covered, the roller 16 abuts against the second button switch 12. When the cover plate 6 covers the right chamber, the roller 16 abuts against the first button switch 9. When the vehicle body is ready to move or rotate, the cover plate 6 is moved to the front wall of the right chamber by the handle 7, and the roller 16 abuts against the first button switch 9, so that the first button switch 9 is in the off state, that is, the drilling drive motor circuit is disconnected, while the second button switch 12 is in the on state, that is, the rotation drive motor and track travel drive motor circuits are connected. The track travel drive motor and rotation drive motor can be controlled to move by the pedal and the second control handle 13 respectively. When the displacement reaches the position where drilling is required, the cover plate 6 is moved to the front wall of the left chamber by the handle 7. At this time, the roller 16 abuts against the second button switch 12, so that the second button switch 12 is in the off state, that is, the rotation drive motor and track travel drive motor circuits are disconnected, while the first button switch 9 is in the on state, that is, the drilling drive motor circuit is connected. The drilling drive motor can be started by the first control handle 10.

[0033] like Figure 3As shown, to prevent rotation and activation of the track drive motor before the drill rod is fully reset, a limiting structure is provided between the connecting seat 15 and the rear wall of the left chamber. The limiting structure includes a limiting block 17 and an electric telescopic rod 14. The electric telescopic rod 14 is fixedly connected to the rear wall of the operating platform 1. The extension shaft of the electric telescopic rod 14 passes through the rear wall of the operating platform 1 and extends into the left chamber. The extension shaft of the electric telescopic rod 14 is located to the right of the second button switch 12 in frontal projection. The electric telescopic rod 14 is electrically connected to the control device and the position sensor. The limiting block 17… 7 is fixedly connected to the right wall of the connecting seat 15. When the drilling drive motor starts, the drill rod begins to drill down. At this time, the position sensor loses the signal. The control device controls the extension shaft of the electric telescopic rod 14 to extend. Through the cooperation of the extension shaft of the electric telescopic rod 14 and the limiting block 17, the cover plate 6 is restricted to the front wall of the left chamber and cannot move to the right. Until the drilling operation of the drill rod is completed and returned to the initial position, the position sensor receives the signal again. The control device controls the extension shaft of the electric telescopic rod 14 to retract. Only then can the cover plate 6 move to the right, which further improves the safety of operation.

[0034] like Figure 1 , Figure 2 As shown, an adsorption structure for adsorption and fixation is provided between the cover plate 6 and the inner wall of the settling tank 2. The adsorption structure includes two sets of first magnetic blocks 8 and second magnetic blocks 11. The two sets of first magnetic blocks 8 are fixedly connected to the left end of the cover plate 6 and the inner left wall of the settling tank 2, respectively, and are opposite to each other. The magnetic properties of the two sets of first magnetic blocks 8 on opposite sides are opposite. The two sets of second magnetic blocks 11 are fixedly connected to the right end of the cover plate 6 and the inner right wall of the settling tank 2, respectively, and are opposite to each other. When the cover plate 6 is located on the left or right side, the two sets of first magnetic blocks 8 and the two sets of second magnetic blocks 11 are mutually attracted to each other, thereby playing a temporary fixing role and avoiding displacement caused by vibration during operation.

[0035] Working principle: When the vehicle body is ready to move or rotate, the cover plate 6 is moved to the front wall of the right chamber via the handle 7. The roller 16 then abuts against the first button switch 9, putting the first button switch 9 in the off state (drilling drive motor circuit disconnected) and the second button switch 12 in the on state (rotation drive motor and track drive motor circuit connected). The track drive motor and rotation drive motor can be controlled via the pedal and the second control handle 13 respectively. After moving to the desired drilling position, the cover plate 6 is moved to the front wall of the left chamber via the handle 7. At this time, the roller 16 abuts against the second button switch 12, putting the second button switch 12 in the off state (rotation drive motor and track drive motor circuit disconnected) and the first button switch 9 in the on state. When the drilling drive motor circuit is on, the drilling drive motor can be started via the first control handle 10. After the drilling drive motor starts, the drill rod begins to drill down. At this time, the position sensor loses its signal, and the control device controls the extension shaft of the electric telescopic rod 14 to extend. Through the cooperation of the extension shaft of the electric telescopic rod 14 and the limiting block 17, the cover plate 6 is restricted to the front wall of the left chamber and cannot move to the right until the drilling operation is completed and the drill rod returns to the initial position. The position sensor receives the signal again, and the control device controls the extension shaft of the electric telescopic rod 14 to retract. Only then can the cover plate 6 move to the right, further improving the safety of operation. When the cover plate 6 is on the left or right side, it is temporarily fixed by the mutual attraction of two sets of first magnetic blocks 8 and two sets of second magnetic blocks 11, thus preventing displacement caused by vibration during operation.

[0036] 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 protection device for a rotary drilling rig, characterized in that: The system includes a control device, a vehicle body, a drill frame, drill rods, a drilling drive motor, a rotary drive motor, a tracked travel drive motor, a position sensor for detecting whether the drill rods have reset, and an operating platform (1) located inside the driver's cab of the vehicle body. The front wall of the operating platform (1) is provided with a sinkhole (2). A partition (4) is fixedly connected to the inner side wall of the sinkhole (2) at a central position in the left-right direction. The sinkhole (2) is divided into a left chamber and a right chamber distributed to the left and right by the partition (4). A cover plate (6) is slidably connected to the opening of the sinkhole (2). A second control handle (13) for controlling the operation of the rotary drive motor is provided on the inner rear wall of the left chamber. A control handle (13) for controlling the operation of the rotary drive motor is provided on the inner rear wall of the right chamber. The first control handle (10) controls the operation of the drilling drive motor. A second button switch (12) is provided on the inner rear wall of the left chamber. A first button switch (9) is provided on the inner rear wall of the right chamber. A connecting seat (15) is fixedly connected to the rear wall of the cover plate (6). An opening (5) is provided on the front wall of the partition plate (4) for the connecting seat (15) to pass through. A triggering structure for triggering the first button switch (9) and the second button switch (12) is provided at the end of the connecting seat (15) away from the cover plate (6). A limiting structure is provided between the connecting seat (15) and the inner rear wall of the left chamber. An adsorption structure for adsorption and fixation is provided between the cover plate (6) and the inner wall of the sink (2).

2. The rotary drilling rig drilling protection device according to claim 1, characterized in that: The second button switch (12) is located on the inner rear wall of the left chamber and above the second control handle (13). The circuits of the rotary drive motor and the track travel drive motor are switched on and off by the second button switch (12). The first button switch (9) is located on the inner rear wall of the right chamber and above the first control handle (10). The circuits of the drilling drive motor are switched on and off by the first button switch (9). The second button switch (12) and the first button switch (9) are located on the left and right sides of the opening (5), respectively. The first button switch (9) and the second button switch (12) are both normally open non-self-retracting button switches.

3. The drilling protection device for a rotary drilling rig according to claim 1, characterized in that: The triggering structure is a roller (16), which is rotatably connected to the end of the connecting seat (15) away from the cover plate (6). When the cover plate (6) covers the left chamber, the roller (16) abuts against the second button switch (12). When the cover plate (6) covers the right chamber, the roller (16) abuts against the first button switch (9).

4. The rotary drilling rig drilling protection device according to claim 1, characterized in that: The limiting structure includes a limiting block (17) and an electric telescopic rod (14). The electric telescopic rod (14) is fixedly connected to the rear wall of the operating table (1). The extension shaft of the electric telescopic rod (14) passes through the rear wall of the operating table (1) and extends into the left chamber. The extension shaft of the electric telescopic rod (14) is located to the right of the second button switch (12) under frontal projection. The electric telescopic rod (14) is electrically connected to the control device and the position sensor. The limiting block (17) is fixedly connected to the right wall of the connecting seat (15).

5. The rotary drilling rig drilling protection device according to claim 1, characterized in that: The adsorption structure includes two sets of first magnetic blocks (8) and second magnetic blocks (11). The two sets of first magnetic blocks (8) are fixedly connected to the left end of the cover plate (6) and the inner left wall of the sedimentation tank (2) respectively, and are opposite to each other. The magnetic properties of the two sets of first magnetic blocks (8) are opposite on opposite sides. The two sets of second magnetic blocks (11) are fixedly connected to the right end of the cover plate (6) and the inner right wall of the sedimentation tank (2) respectively, and are opposite to each other. The magnetic properties of the two sets of second magnetic blocks (11) are opposite on opposite sides.

6. The drilling protection device for a rotary drilling rig according to claim 1, characterized in that: The inner upper wall and inner lower wall of the settling tank (2) are provided with sliding grooves (3) located near the front wall of the operating table (1). The cover plate (6) is slidably connected to the two sets of sliding grooves (3). The width of the cover plate (6) in the left and right directions can completely cover the left or right chamber.

7. The rotary drilling rig drilling protection device according to claim 1, characterized in that: The front wall of the cover plate (6) is fixedly connected to a handle (7) for facilitating the left and right movement of the cover plate (6).

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