One-key rod changing system based on SD65 down-the-hole drill

Abstract

The utility model discloses a one-key rod changing system based on an SD65 down-the-hole drill, which comprises a propelling beam, an encoder arranged at the top of the propelling beam, a propelling hydraulic cylinder arranged inside the upper end of the propelling beam, a rotary hydraulic motor arranged on the propelling beam, a gyrator connected onto the rotary hydraulic motor, a buffer, a transition joint and a drill rod connected onto the gyrator, the propelling beam is provided with a rod replacing assembly used for adding and detaching rods, and the lower end of the propelling beam is provided with a connecting assembly used for connecting or detaching the two drill rods. Through a series of actions of the connecting assembly, the overturning hydraulic motor, the clamp holder and the hydraulic slewing mechanism, the proximity sensor is used for accurately positioning, the encoder is used for reading a displacement value, and the electric-hydraulic proportion of a rotating oil way and the electric-hydraulic proportion of a propelling oil way are used for controlling the smoothness of connecting a drill rod and withdrawing a drill thread in a matched mode. Connection or separation of the drill rods is completed through mutual cooperation, one-key rod replacement without manual operation is achieved, working efficiency is improved, cost is reduced, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock mining engineering machinery, in particular to a one-key rod changing system based on an SD65 down-the-hole drill. Background Art

[0002] In actual mining operations, most of the requirements for blasting require a hole depth of more than twelve meters. Such a hole depth determines that the drill rods of the down-the-hole drill must be able to be connected to each other; on some down-the-hole drills, the connection of the drill rods must be done manually; the specific operation process is as follows: when connecting the rod, a special caliper is manually clamped to the drill rod, the rotary head reverses the transition joint and separates it from the drill rod, and then a drill rod is manually lifted, the tail of the drill rod is aligned with the rotary head transition joint, the rotary head rotates forward, the transition joint is combined with the drill rod, and then the combined drill rod is manually straightened and aligned with the tail of the drill rod that has been drilled into the rock, and the rotary head rotates forward to combine the two drill rods; the rod withdrawal process is the opposite.

[0003] The entire process of connecting and withdrawing rods requires manual labor, which brings high labor costs to many mines, and also poses a great safety hazard, and wastes a lot of time costs; therefore, a one-key rod changing system for down-the-hole drills is proposed to solve the cumbersome operation, avoid various misoperations, inaccurate positioning, rod dropping and other phenomena, improve work efficiency, reduce fuel consumption and costs, and improve safety. The one-key rod changing system clarifies the timing of rod changing, is more stable and more reliable. Utility Model Content

[0004] The purpose of the utility model is to provide a one-button rod changing system based on the SD65 down-the-hole drill rig in view of the above-mentioned problems. The utility model uses a series of actions of connecting components, flipping hydraulic motors, clamps, and hydraulic rotary mechanisms to accurately locate with proximity sensors, and encoders to read displacement values. The size of the electro-hydraulic ratio of the rotating oil circuit and the electro-hydraulic ratio of the advancing oil circuit are matched to control the smoothness of connecting the drill rod and exiting the drill thread, and the connection or disconnection of the drill rod is completed in cooperation with each other, so as to realize one-button rod changing without manual operation, improve work efficiency, reduce costs, and improve safety. In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is as follows:

[0005] According to one aspect of the utility model, a one-button rod changing system based on the SD65 down-the-hole drill is provided, including a propulsion beam, an encoder is provided on the top of the propulsion beam, a propulsion hydraulic cylinder is provided inside the upper end of the propulsion beam, a rotary hydraulic motor is provided on the propulsion beam, and a rotator is connected to the output shaft of the rotary hydraulic motor, a buffer, a transition joint and a drill rod are connected to the rotator, the rotary hydraulic motor is located on the propulsion hydraulic cylinder, a rod changing assembly for adding and unloading rods is provided on the propulsion beam, and a connecting assembly for connecting or disassembling two drill rods is provided at the lower end of the propulsion beam.

[0006] Preferably, the rod changing assembly includes a storage bin, a hydraulic slewing mechanism, a flipping hydraulic motor and a clamp. The upper end of the propulsion beam is provided with a storage bin via a connecting arm, and the connecting arm is between the slewing hydraulic motor and the propulsion hydraulic cylinder. A hydraulic slewing mechanism is provided on the top of the storage bin. The storage bin is divided into an upper bottom and a lower bottom, and the upper bottom and the lower bottom are connected by a connecting column. The upper bottom and the lower bottom are both provided with a storage outlet. Two chucks are evenly distributed on the connecting column, and each of the chucks is provided with a plurality of placement slots. A proximity sensor is provided at the bottom of the lower bottom. A flip arm is hinged on the propulsion beam, and a flip hydraulic motor is provided on the flip arm. The lower end of the flip hydraulic motor is connected to a support rod, a clamp is provided at the lower end of the support rod, and a proximity switch is provided at the lower end of the support rod.

[0007] Preferably, the connection assembly comprises an upper clamping bar and a lower clamping bar, the lower end of the propulsion beam is connected with the upper clamping bar and the lower clamping bar, and the upper clamping bar and the lower clamping bar are both coaxially arranged with the drill pipe.

[0008] Preferably, the upper clamp and the lower clamp are both composed of two hydraulic push rods and two clamping claws, the upper clamp is provided with an upper fixing rod, and the lower clamp is provided with a lower fixing rod, and a pushing cylinder is provided between the upper fixing rod and the lower fixing rod, and the pushing cylinder is hinged to the upper fixing rod and the lower fixing rod respectively.

[0009] Preferably, the lower clamping bar is fixedly mounted on the propulsion beam, and the upper clamping bar is movably connected to the lower clamping bar.

[0010] Preferably, each of the clamping jaws is provided with a plurality of protrusions.

[0011] Preferably, each placement groove is in the shape of an arc, and each placement groove is provided with two guide parts extending to both sides.

[0012] Preferably, both the upper and lower bottom exits of the storage bin are provided with doors.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. The one-key rod changing system based on the SD65 down-the-hole drill described in the utility model, through a series of actions of connecting components, flip hydraulic motors, clamps, and hydraulic rotary mechanisms, uses proximity sensors for precise positioning, encoders to read displacement values, and uses the size of the electro-hydraulic ratio of the rotating oil circuit and the electro-hydraulic ratio of the advancing oil circuit to match and control the smoothness of connecting the drill rod and exiting the drill thread, and cooperates with each other to complete the connection or disconnection of the drill rod, realizing one-key rod changing without manual operation, improving work efficiency, reducing costs, and improving safety.

[0015] 2. The one-button rod changing system based on the SD65 down-the-hole drill described in the utility model increases the friction between the clamp and the drill rod by providing multiple protrusions on each clamp. In the process of unloading the rod under the action of the pushing cylinder, the clamp and the drill rod are prevented from slipping, thereby improving the stability of the rod unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a control structure block diagram of the utility model;

[0017] Figure 2 It is a control flow chart of the utility model;

[0018] Figure 3 It is a front view three-dimensional structural schematic diagram of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the storage bin and its connection structure of the utility model;

[0020] Figure 5 This utility model Figure 4 A magnified image of point A;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the connection assembly of the utility model;

[0022] Figure 7 It is a partial three-dimensional structural schematic diagram between the clamp and the lower bottom of the storage bin of the utility model;

[0023] In the attached drawings, 1. propulsion beam; 2. encoder; 3. propulsion hydraulic cylinder; 4. rotary hydraulic motor; 5. rotator; 6. drill pipe; 7. storage bin; 701. upper bottom; 702. lower bottom; 703. connecting column; 704. outlet; 705. chuck; 706. placement groove; 707. guide part; 8. hydraulic rotary mechanism; 9. flip hydraulic motor; 10. clamp; 11. connecting arm; 12. proximity sensor; 13. flip arm; 14. support rod; 15. proximity switch; 16. upper clamp; 1601. upper fixing rod; 17. lower clamp; 1701. lower fixing rod; 18. hydraulic push rod; 19. clamp; 1901. protrusion; 20. push cylinder; 21. warehouse door; 22. buffer; 23. transition joint. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0025] See also Figures 1 to 7 The utility model provides a one-button rod changing system based on SD65 down-the-hole drill, and the technical solution is as follows:

[0026] It includes a propulsion beam 1, an encoder 2 is provided on the top of the propulsion beam 1, a propulsion hydraulic cylinder 3 is provided inside the upper end of the propulsion beam 1, a rotary hydraulic motor 4 is provided on the propulsion beam 1, and a rotator 5 is connected to the output shaft of the rotary hydraulic motor 4, a buffer 22, a transition joint 23 and a drill rod 6 are connected to the rotator 5, the rotary hydraulic motor 4 is located on the propulsion hydraulic cylinder 3, a rod changing assembly for adding and unloading rods is provided on the propulsion beam 1, and a connecting assembly for connecting or disassembling two drill rods 6 is provided at the lower end of the propulsion beam 1.

[0027] The rotary hydraulic motor 4 is provided with a rotary oil circuit electro-hydraulic proportional valve, the oil circuit of the propulsion hydraulic cylinder 3 is provided with a propulsion oil circuit electro-hydraulic proportional valve, and the propulsion beam 1 is also provided with an operation button, an operation handle, a programmable controller, an actuator solenoid valve and a display screen. The encoder 2, the proximity sensor 12 and the display screen are respectively connected to the input circuit of the programmable controller, and the rotary oil circuit electro-hydraulic proportional valve and the propulsion oil circuit electro-hydraulic proportional valve are respectively connected to the output circuit of the programmable controller; the programmable controller is a single-chip microcomputer controller or a PLC controller, and the propulsion oil circuit electro-hydraulic proportional valve has two-speed control valves, namely a fast forward and backward control valve and a slow forward and backward control valve. The propulsion oil circuit electro-hydraulic proportional valve and the rotary oil circuit electro-hydraulic proportional valve have adjustable electric proportions, which can well control the screwing in and out of the thread. The encoder 2 transmits data in real time, better and more accurately controls the moving position of the rotary head, and more reliably adds and unloads the rod;

[0028] The connection of the drill rod 6 of a general down-the-hole drilling rig needs to be completed manually, and the specific operation process is as follows: when connecting the rod, a special caliper is manually clamped to clamp the drill rod 6, the rotary head reverses the transition joint 23 to separate the drill rod 6, and then a drill rod 6 is manually lifted, the tail of the drill rod 6 is aligned with the rotary head transition joint 23, the rotary head rotates forward, the transition joint 23 is combined with the drill rod 6, and then the combined drill rod 6 is manually straightened and aligned with the tail of the drill rod 6 that has been drilled into the rock, the rotary head rotates forward to combine the two drill rods 6, and the rod withdrawal process is the opposite; the process is cumbersome and consumes labor and time costs, and is accompanied by safety hazards; by setting up a rod changing assembly and a connecting assembly, construction personnel can control the display screen externally and perform one-key rod changing through a programmable controller, which reduces labor and time costs, improves efficiency, and reduces safety hazards.

[0029] The rod changing assembly includes a storage bin 7, a hydraulic slewing mechanism 8, a tilting hydraulic motor 9 and a clamp 10. The upper end of the propulsion beam 1 is provided with a storage bin 7 through a connecting arm 11, and the connecting arm 11 is between the slewing hydraulic motor 4 and the propulsion hydraulic cylinder 3. The top of the storage bin 7 is provided with a hydraulic slewing mechanism 8. The storage bin 7 is divided into an upper bottom 701 and a lower bottom 702, and the upper bottom 701 and the lower bottom 702 are connected by a connecting column 703. The upper bottom 701 and the lower bottom 702 are both open. There is an outlet 704, two chucks 705 are evenly distributed on the connecting column 703, and each of the chucks 705 is provided with a plurality of placement grooves 706, a proximity sensor 12 is provided at the bottom of the lower bottom 702, a flip arm 13 is hinged on the propulsion beam 1, a flip arm 13 is provided with a flip hydraulic motor 9, a support rod 14 is connected to the lower end of the flip hydraulic motor 9, a clamp 10 is provided at the lower end of the support rod 14, and a proximity switch 15 is provided at the lower end of the support rod 14.

[0030] The storage bin 7 contains a plurality of drill rods 6 for adding rods, which can accommodate up to eight drill rods 6. When the drilling depth needs to be increased, a rod needs to be added. The hydraulic rotary mechanism 8, i.e., the hydraulic rotary transmission device, drives the connecting column 703 to rotate and rotates the drill rod 6 in the storage bin 7 to the outlet 704. The flip hydraulic motor 9 drives the clamp 10 to move to the outlet 704 through the flip arm 13. Then, the clamp 10 clamps the drill rod 6 and returns it to the bottom of the rotator 5. During the process, the proximity switch 15 detects whether there is a drill rod 6 on the clamp 10. Then, the rotator 5 rotates clockwise to feed. After being added to the upper end of the drill rod 6, the drill rod 6 is driven to rotate and combine with the upper end of the drill rod 6 in the hole below, and the clamp 10 is loosened and returns to the initial position. At this time, the rod addition is completed; the proximity switch 15 detects that there is a drill rod 6 on the clamp 10, and the clamp 10 will increase the clamping force. The process of the drill rod 6 moving to the drilling position is detected by the proximity switch 15. When the rotator 5 feeds, there is a rotation pressure judgment in the control system to avoid damage caused by excessive pressure. When the drill rod 6 is driven to dock with the previous drill rod 6, the proximity switch 15, the encoder 2 and the rotation pressure are judged at the same time to avoid misalignment and damage caused by excessive pressure.

[0031] The connecting assembly includes an upper clamping chisel 16 and a lower clamping chisel 17, the lower end of the propulsion beam 1 is connected with the upper clamping chisel 16 and the lower clamping chisel 17, and the upper clamping chisel 16 and the lower clamping chisel 17 are coaxially arranged with the drill pipe 6; the upper clamping chisel 16 and the lower clamping chisel 17 are composed of two hydraulic push rods 18 and two clamping claws 19, the upper clamping chisel 16 is provided with an upper fixed rod 1601, and the lower clamping chisel 17 is provided with a lower fixed rod 1701, and a pushing cylinder 20 is provided between the upper fixed rod 1601 and the lower fixed rod 1701, and the pushing cylinder 20 is respectively hinged to the upper fixed rod 1601 and the lower fixed rod 1701; the lower clamping chisel 17 is fixedly installed on the propulsion beam 1, and the upper clamping chisel 16 is movably connected to the lower clamping chisel 17 When adding or removing rods to the drill rod 6, it is necessary to pass through the connecting assembly. When adding rods, the two clamping claws 19 of the upper clamping chisel 16 clamp the upper drill rod 6, and the two clamping claws 19 of the lower clamping chisel 17 clamp the drill rod 6 in the borehole. Driven by the rotary hydraulic motor 4, the upper drill rod 6 rotates and combines with the lower drill rod 6 to complete the rod adding action; when removing rods, since the lower clamping chisel 17 is fixedly installed on the propulsion beam 1, the oil cylinder 20 is pushed to start telescoping, driving the upper clamping chisel 16 to perform circular rotational motion, and at the same time driving the clamped drill rod 6 above to rotate, that is, the upper drill rod 6 is separated from the lower drill rod 6, and the separated drill rod 6 is returned to the storage bin 7 under the action of the clamp 10 to complete the rod removing action.

[0032] Each of the clamping jaws 19 is provided with a plurality of protrusions 1901, which increase the friction between the clamping jaws 19 and the drill rod 6, and avoid slipping between the clamping jaws 19 and the drill rod 6 during the process of unloading the rod under the action of the pushing cylinder 20, thereby improving the stability of the unloading process.

[0033] Each of the placement grooves 706 is in the shape of an arc, and each placement groove 706 is provided with two guide parts 707 extending to both sides; the arc shape of the placement groove 706 matches the shape of the drill rod 6, improving the smoothness of the drill rod 6 when entering and exiting, and the two guide parts 707 extend to the left and right sides of the placement groove 706, forming an eight-shaped shape, which plays a guiding role. When the drill rod 6 is driven back to the storage bin 7 under the action of the clamp 10, the drill rod 6 can smoothly enter the placement groove 706 along the guide part 707, thereby improving stability.

[0034] The storage bin 7 has doors 21 on its upper bottom 701 and lower bottom 702 and its outlet 704. One to eight drill rods 6 can be placed in the storage bin 7. When the storage bin 7 is rotated driven by the hydraulic rotary mechanism 8, centrifugal force will be generated. By providing doors 21 on both the upper bottom 701 and the lower bottom 702, the drill rods 6 can be prevented from detaching from the storage bin 7 from the outlet 704 during rotation, thereby improving stability and safety.

[0035] Workflow:

[0036] Rod unloading: driven by the thrust hydraulic cylinder 3, the drill rod 6 moves to the unloading position, which is located a few centimeters above the upper clamp 16. The upper clamp 16 and the lower clamp 17 clamp the corresponding drill rod 6 respectively, and the adjacent drill rods 6 are separated by pushing the oil cylinder 20. Then the rotary hydraulic motor 4 drives the rotator 5 to reverse and disengage from the corresponding drill rod 6. Then, the drill rod 6 is lowered and retracted into the storage bin 7 under the action of the clamp 10 to complete the rod unloading action.

[0037] Adding rods: When the drilling depth needs to be increased, the drill rod 6 is moved from the borehole to the unloading position by pushing the hydraulic cylinder 3, and the upper clamp 16 and the lower clamp 17 are clamped, and then the drill rod 6 currently connected to the rotator 5 is unloaded. After the rotator 5 and the drill rod 6 are separated by the upper clamp 16 and the lower clamp 17, the rotator 5 returns to the top and resets, and the clamp 10 takes the drill rod 6 out of the storage bin 7. The process first determines whether there is a drill rod 6 through the proximity switch 15. If there is a drill rod 6, the clamp 10 10 moves to the unloading position. If there is no drill rod 6, the hydraulic rotary mechanism 8 flips until one side of the chuck 705 with the drill rod 6 moves to the clamp 10; when the drill rod 6 moves to the unloading position, the rotator 5 rotates clockwise to feed, and the rotary pressure is used to judge whether the rotator 5 is added to the upper end of the drill rod 6. Then the clamp 10 lightly clamps, and the lower end of the drill rod 6 is connected to the upper end of the drill rod 6 in the borehole. The clamp 10 is released and reset through the proximity switch 15, the encoder 2 and the rotary pressure, and the rod adding action is completed.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Based on the one-button rod changing system of SD65 down-the-hole drill, it is characterized by: include: A propulsion beam (1), wherein an encoder (2) is provided on the top of the propulsion beam (1), a propulsion hydraulic cylinder (3) is provided inside the upper end of the propulsion beam (1), a rotary hydraulic motor (4) is provided on the propulsion beam (1), and a rotator (5) is connected to the output shaft of the rotary hydraulic motor (4), and a buffer (22), a transition joint (23) and a drill rod (6) are connected to the rotator (5), the rotary hydraulic motor (4) is located on the propulsion hydraulic cylinder (3), a rod changing assembly for adding and removing rods is provided on the propulsion beam (1), and a connection assembly for connecting or removing two drill rods (6) is provided at the lower end of the propulsion beam (1); The rod changing assembly comprises a storage bin (7), a hydraulic slewing mechanism (8), a tilting hydraulic motor (9) and a clamp (10); the upper end of the propulsion beam (1) is provided with a storage bin (7) via a connecting arm (11), and the connecting arm (11) is located between the slewing hydraulic motor (4) and the propulsion hydraulic cylinder (3); the top of the storage bin (7) is provided with a hydraulic slewing mechanism (8); the storage bin (7) is divided into an upper bottom (701) and a lower bottom (702), and the upper bottom (701) and the lower bottom (702) are connected via a connecting column (703); the upper bottom (701) and the lower bottom (702) are connected to each other via a connecting column (703); ) are provided with an outlet (704), two chucks (705) are evenly distributed on the connecting column (703), and each of the chucks (705) is provided with a plurality of placement slots (706), a proximity sensor (12) is provided at the bottom of the lower bottom (702), a flip arm (13) is hinged on the propulsion beam (1), a flip arm (13) is provided with a flip hydraulic motor (9), the lower end of the flip hydraulic motor (9) is connected to a support rod (14), the lower end of the support rod (14) is provided with a clamp (10), and the lower end of the support rod (14) is provided with a proximity switch (15).

2. The one-key rod changing system based on SD65 down-the-hole drilling rig according to claim 1 is characterized in that: The connection assembly comprises an upper clamping chisel (16) and a lower clamping chisel (17); the lower end of the propulsion beam (1) is connected to the upper clamping chisel (16) and the lower clamping chisel (17); and the upper clamping chisel (16) and the lower clamping chisel (17) are both coaxially arranged with the drill rod (6).

3. The one-key rod changing system based on SD65 down-the-hole drilling rig according to claim 2 is characterized in that: The upper clamping chisel (16) and the lower clamping chisel (17) are both composed of two hydraulic push rods (18) and two clamping claws (19); the upper clamping chisel (16) is provided with an upper fixing rod (1601), and the lower clamping chisel (17) is provided with a lower fixing rod (1701); and a pushing cylinder (20) is provided between the upper fixing rod (1601) and the lower fixing rod (1701); the pushing cylinder (20) is respectively hinged to the upper fixing rod (1601) and the lower fixing rod (1701).

4. The one-key rod changing system based on SD65 down-the-hole drilling rig according to claim 3 is characterized in that: The lower clamping chisel (17) is fixedly mounted on the propulsion beam (1), and the upper clamping chisel (16) is movably connected to the lower clamping chisel (17).

5. The one-key rod changing system based on SD65 down-the-hole drilling rig according to claim 3 is characterized in that: Each of the clamping jaws (19) is provided with a plurality of protrusions (1901).

6. The one-key rod changing system based on SD65 down-the-hole drilling rig according to claim 1 is characterized in that: Each placement groove (706) is in the shape of an arc, and each placement groove (706) is provided with two guide parts (707) extending toward two sides.

7. The one-key rod changing system based on SD65 down-the-hole drilling rig according to claim 1 is characterized in that: Doors (21) are provided on the upper bottom (701) and the lower bottom (702) of the storage bin (7) at the storage outlet (704).

Images