Power head assembly

Abstract

The utility model provides a power head assembly which comprises a support, a supporting sleeve is fixedly installed in one end of the support, a connecting plate is rotatably connected to the outer side face of the supporting sleeve, a lifting lug is arranged at one end of the connecting plate, a hydraulic direct-acting brake is arranged on the side face of the lifting lug, dip angle oil cylinders are fixedly installed on the two sides of the support respectively, and the dip angle oil cylinders are connected with the hydraulic direct-acting brake. One end of the dip angle oil cylinder is rotationally connected to the side surface of the connecting plate; and the power head reduction gearbox is arranged between the two connecting plates. According to the power head assembly, the plunger motor serves as a power unit to be connected with a hydraulic system to generate rotary mechanical energy, high-speed rotation is converted into low-speed large-torque main shaft rotation through cooperation of the planetary speed reduction assembly and the power head reduction gearbox, and therefore the required rotating speed and torque can be stably achieved; and the efficiency and the quality of drilling operation are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a power head assembly. Background Art

[0002] At present, underground drilling construction in coal mines requires the use of a power head. As the core component of the drilling rig, the power head is connected to the drilling rig feed device and is mainly used to clamp the drill tool, provide the torque required to drive the drill tool in the hole, and realize the rotation of the drill tool.

[0003] However, the speed and torque of traditional coal mine drilling power head assemblies are difficult to stably reach the required values, which greatly affects the efficiency and quality of drilling operations and cannot meet the requirements of drilling depth and speed under different geological conditions; secondly, it lacks the ability to cooperate well with the automatic rod changing mechanism. During the rod changing process, manual intervention is often required, which not only increases the labor intensity of workers, but also reduces work efficiency; in addition, traditional power head assemblies cannot actively complete braking and deceleration. When emergency stops or adjustments to drilling speed are required, the response is slow, which may cause equipment damage, drill rod breakage and other problems, affecting the normal progress of coal mining.

[0004] Therefore, it is necessary to provide a power head assembly to solve the above technical problems. Utility Model Content

[0005] The utility model provides a power head assembly, which solves the problems that the rotational speed and torque are difficult to stably meet the standards, affecting the drilling efficiency and quality; manual intervention is required for rod changing operations, which increases labor intensity and reduces working efficiency; and the deceleration and braking response is slow, which easily causes equipment damage.

[0006] In order to solve the above technical problems, the present invention provides a power head assembly, comprising:

[0007] A bracket, a support sleeve is fixedly installed inside one end of the bracket, the outer side of the support sleeve is rotatably connected to a connecting plate, one end of the connecting plate is provided with a lifting ear, the side of the lifting ear is provided with a hydraulic direct-acting brake, and a tilt cylinder is fixedly installed on both sides of the bracket, one end of the tilt cylinder is rotatably connected to the side of the connecting plate;

[0008] The power head reducer is arranged in the middle of the two connecting plates, and a fixed joint is provided at the output end of the power head reducer, a brake disc is fixedly installed at one end of the fixed joint, a floating device is provided at one end of the brake disc, an anti-loosening seat is provided at one end of the floating device, and one end of the anti-loosening seat is provided at the transition joint, and a water joint assembly is fixedly installed on the other side of the power head reducer, and plunger motors are provided on both sides of the water joint assembly, and the output end of the plunger motor is connected to the input end of the power head reducer.

[0009] Preferably, a power head locking cylinder assembly is fixedly installed on both sides of the bracket, the power head locking cylinder assembly is arranged on the top of the tilt cylinder, and a limiting sleeve is provided on the outer side surface of the movable end of the power head locking cylinder assembly, and the limiting sleeve is fixedly installed on the side of the connecting plate.

[0010] Preferably, a planetary reduction assembly is fixedly mounted on one side of the plunger motor, and the planetary reduction assembly is fixedly mounted on the side of the power head reduction box.

[0011] Preferably, a support frame is sleeved on the outer side surface of the pipe at the input end of the water connector assembly, and the support frame is fixedly installed on the side surface of the connecting plate.

[0012] Preferably, an oil pump and an oil suction filter are respectively provided at both ends of the other side of the power head reduction box.

[0013] Preferably, a backing plate is provided on the other side of the lifting ear, a through groove is provided inside the backing plate and the lifting ear, and a connecting bolt is provided inside the through groove and the hydraulic direct-acting brake.

[0014] Preferably, clamping plates are provided on both sides of the hydraulic direct-acting brake, the side surfaces of the clamping plates are rotatably connected to adjusting screws, the outer side surfaces of the adjusting screws are threadedly connected to positioning plates, and the positioning plates are fixedly mounted on the sides of the lifting ears.

[0015] Compared with the related art, the power head assembly provided by the present invention has the following beneficial effects:

[0016] The utility model provides a power head assembly, which uses a plunger motor as a power unit to connect to a hydraulic system to generate rotary mechanical energy, and then converts high-speed rotation into low-speed, high-torque main shaft rotation through the cooperation of a planetary reduction assembly and a power head reduction box, thereby stably achieving the required speed and torque, greatly improving the efficiency and quality of drilling operations;

[0017] The connecting plate can be pushed by the tilt cylinder to rotate on the end face of the bracket, driving the power head assembly to complete an 80° rotation. This design facilitates the addition and removal of drill rods during actual work, greatly reducing the workload of workers when raising and lowering drill rods. It also achieves good coordination with the automatic rod-changing mechanism, eliminating the need for excessive manual intervention and significantly improving work efficiency.

[0018] When stopping is required, the hydraulic direct-acting brake clamps the brake disc, thereby being able to brake and limit the main shaft. This allows for a quick response when an emergency stop or adjustment of the drilling speed is required, effectively avoiding equipment damage, drill rod breakage, and other problems that may be caused by slow response, thereby ensuring the normal operation of coal mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a first embodiment of a power head assembly provided by the present utility model;

[0020] Figure 2 for Figure 1 The side structure diagram shown;

[0021] Figure 3 for Figure 2 The schematic diagram of the cross-sectional structure at AA is shown;

[0022] Figure 4 for Figure 1 Schematic diagram of the bracket structure shown;

[0023] Figure 5 This is a structural schematic diagram of a second embodiment of a power head assembly provided by the utility model;

[0024] Figure 6 for Figure 5 Schematic diagram of the side structure of the pad shown.

[0025] Numbers in the figure: 1. Bracket, 2. Power head reducer, 3. Planetary reduction assembly, 4. Water joint assembly, 5. Support frame, 6. Rotating plate, 7. Floating device, 8. Anti-loosening seat, 9. Fixed joint, 10. Transition joint, 11. Encoder, 18. Straight joint, 19. Piston motor, 20. Lubrication pump, 21. Oil suction filter, 22. Power head locking cylinder assembly weldment, 23. Power head locking cylinder assembly, 24. Tilt cylinder, 25. Support sleeve, 26. Lifting ear, 27. Hydraulic direct-acting brake, 28. Connecting plate, 29. Limit sleeve, 30. Pad, 31. Through slot, 32. Positioning plate, 33. Adjusting screw, 34. Clamping plate, 35. Connecting bolt. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0027] First embodiment

[0028] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 ,in, Figure 1 A schematic structural diagram of a first embodiment of a power head assembly provided by the present utility model; Figure 2 for Figure 1 The side structure diagram shown;

[0029] Figure 3 for Figure 2The schematic diagram of the cross-sectional structure at AA is shown; Figure 4 for Figure 1 The schematic diagram of the bracket structure shown. A power head assembly includes: a bracket 1, a support sleeve 25 fixedly mounted on one end of the bracket 1, a connecting plate 28 rotatably connected to the outer side of the support sleeve 25, a lifting lug 26 provided at one end of the connecting plate 28, a hydraulic direct-acting brake 27 provided on the side of the lifting lug 26, a tilt cylinder 24 fixedly mounted on both sides of the bracket 1, and one end of the tilt cylinder 24 rotatably connected to the side of the connecting plate 28;

[0030] The power head reducer 2 is arranged in the middle of the two connecting plates 28, and a fixed joint 9 is provided at the output end of the power head reducer 2, a brake disc 6 is fixedly installed at one end of the fixed joint 9, a floating device 7 is provided at one end of the brake disc 6, an anti-loosening seat 8 is provided at one end of the floating device 7, and one end of the anti-loosening seat 8 is provided at the transition joint 10, and a water joint assembly 4 is fixedly installed on the other side of the power head reducer 2, and plunger motors 19 are provided on both sides of the water joint assembly 4, and the output end of the plunger motor 19 is connected to the input end of the power head reducer 2.

[0031] The power head locking cylinder assembly 23 is fixedly installed on both sides of the bracket 1. The power head locking cylinder assembly 23 is arranged on the top of the tilt cylinder 24. The outer side surface of the moving end of the power head locking cylinder assembly 23 is provided with a limiting sleeve 29. The limiting sleeve 29 is fixedly installed on the side of the connecting plate 28.

[0032] A planetary reduction assembly 3 is fixedly mounted on one side of the plunger motor 19 , and the planetary reduction assembly 3 is fixedly mounted on the side of the power head reduction box 2 .

[0033] A support frame 5 is sleeved on the outer side surface of the pipe at the input end of the water connector assembly 4 , and the support frame 5 is fixedly installed on the side surface of the connecting plate 28 .

[0034] An oil pump 20 and an oil suction filter 21 are respectively provided at both ends of the other side of the power head reduction box 2.

[0035] The hydraulic direct-acting brake 27 is arranged on the side of the brake disc 6 and is used to limit the position of the brake disc 6 when in use.

[0036] The power head assembly consists of a water joint assembly 4, a plunger motor 19, a planetary reduction assembly 3, a power head reduction box 2, a brake disc 6 and various joints.

[0037] The working principle of a power head assembly provided by the utility model is as follows:

[0038] The water joint assembly 4 is responsible for connecting the mud pipe to inject high-pressure water into the bottom of the borehole through the drill pipe to flush out a large amount of gravel and mud generated during the drilling process to ensure the normal and stable drilling process. The plunger motor 19 is the power unit of the power head. The plunger motor 19 is connected to the hydraulic system to generate rotational mechanical energy; the planetary reduction assembly 3 transmits the high-speed rotation generated by the plunger motor 19 to the main shaft, and converts it into low-speed and high-torque main shaft rotation through the power head reduction box 2. When it is necessary to stop, the hydraulic direct-acting brake 27 can be started to clamp the brake disc 6, thereby being able to stop the main shaft to a limit position;

[0039] At the same time, when in use, the connecting plate 28 can be pushed by the inclination cylinder 24, so that the connecting plate 28 can be rotated on the end face of the bracket 1, driving the power head assembly to complete an 80° rotation, which is convenient for adding and removing drill rods in actual work, and greatly reduces the work intensity of workers when raising and lowering drill rods; the power head assembly and the power head connecting plate 28 are connected by bolts.

[0040] Compared with the related art, the power head assembly provided by the present invention has the following beneficial effects:

[0041] The plunger motor 19 is connected to the hydraulic system as a power unit to generate rotary mechanical energy. The planetary reduction assembly 3 and the power head reduction box 2 cooperate to convert the high-speed rotation into low-speed, high-torque main shaft rotation, thereby stably achieving the required speed and torque, greatly improving the efficiency and quality of drilling operations.

[0042] The connecting plate 28 can be pushed by the tilt cylinder 24 to rotate the connecting plate 28 on the end face of the bracket 1, driving the power head assembly to complete an 80° rotation. This design facilitates the addition and removal of drill rods during actual work, greatly reducing the workload of workers when raising and lowering drill rods, and achieves good coordination with the automatic rod-changing mechanism, eliminating the need for excessive manual intervention and significantly improving work efficiency.

[0043] When stopping is required, the hydraulic direct-acting brake 27 clamps the brake disc 6, thereby being able to brake and limit the main shaft, so that when an emergency stop or adjustment of the drilling speed is required, the response is quick, effectively avoiding equipment damage, drill rod breakage and other problems that may be caused by slow response, and ensuring the normal progress of coal mining.

[0044] Second embodiment

[0045] Please refer to Figure 5 and Figure 6Based on the power head assembly provided in the first embodiment of the present application, the second embodiment of the present application provides another power head assembly. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0046] Specifically, the difference of the power head assembly provided in the second embodiment of the present application is that, in a power head assembly, a pad 30 is provided on the other side of the lifting ear 26, and a through groove 31 is provided inside the pad 30 and the lifting ear 26, and a connecting bolt 35 is provided inside the through groove 31 and the hydraulic direct-acting brake 27.

[0047] A clamping plate 34 is provided on both sides of the hydraulic direct-acting brake 27 , and the side of the clamping plate 34 is rotatably connected to an adjusting screw 33 , and the outer side of the adjusting screw 33 is threadedly connected to a positioning plate 32 , and the positioning plate 32 is fixedly installed on the side of the lifting ear 26 .

[0048] The working principle of a power head assembly provided by the utility model is as follows:

[0049] When installing the hydraulic direct-acting brake 27, first pass the connecting bolt 35 through the hydraulic direct-acting brake 27 and the through-groove 31 respectively, and then set a nut on the side of the pad 30 so that the nut is threadedly connected to the connecting bolt 35, thereby limiting the hydraulic direct-acting brake 27. After that, the user rotates the adjusting screw 33 so that the adjusting screw 33 is threadedly connected to the inside of the positioning plate 32, and then pushes one end of the adjusting threaded rod 33 on the hydraulic direct-acting brake 27 to adjust the position of the hydraulic direct-acting brake 27 so that the brake disc 6 is located at the center position of the inner side of the hydraulic direct-acting brake 27. After adjusting to the appropriate position, rotate the nut to fix the hydraulic direct-acting brake 27.

[0050] Compared with the related art, the power head assembly provided by the present invention has the following beneficial effects:

[0051] By arranging clamping plates 34 on both sides of the hydraulic direct-acting brake 27, and rotatingly connecting an adjusting screw 33 on the side of the clamping plate 34, and then threading a positioning plate 32 on the outer side of the adjusting screw 33, and installing the positioning plate 32 on the side of the lifting ear 26, the position of the hydraulic direct-acting brake 27 can be accurately adjusted by rotating the two adjusting screws 33, which makes it convenient for the user to install the hydraulic direct-acting brake 27 on the outer side of the brake disc 6.

[0052] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A power head assembly, characterized in that: include: A bracket, a support sleeve is fixedly installed inside one end of the bracket, the outer side of the support sleeve is rotatably connected to a connecting plate, one end of the connecting plate is provided with a lifting ear, the side of the lifting ear is provided with a hydraulic direct-acting brake, and a tilt cylinder is fixedly installed on both sides of the bracket, one end of the tilt cylinder is rotatably connected to the side of the connecting plate; The power head reducer is arranged in the middle of the two connecting plates, and a fixed joint is provided at the output end of the power head reducer, a brake disc is fixedly installed at one end of the fixed joint, a floating device is provided at one end of the brake disc, an anti-loosening seat is provided at one end of the floating device, and one end of the anti-loosening seat is provided at the transition joint, and a water joint assembly is fixedly installed on the other side of the power head reducer, and plunger motors are provided on both sides of the water joint assembly, and the output end of the plunger motor is connected to the input end of the power head reducer.

2. A power head assembly according to claim 1, characterized in that: A power head locking cylinder assembly is fixedly installed on both sides of the bracket, the power head locking cylinder assembly is arranged on the top of the tilt cylinder, and a limiting sleeve is provided on the outer side surface of the moving end of the power head locking cylinder assembly, and the limiting sleeve is fixedly installed on the side surface of the connecting plate.

3. A power head assembly according to claim 1, characterized in that: A planetary reduction assembly is fixedly mounted on one side of the plunger motor, and the planetary reduction assembly is fixedly mounted on the side of the power head reduction box.

4. A power head assembly according to claim 1, characterized in that: A support frame is sleeved on the outer side surface of the pipe at the input end of the water joint assembly, and the support frame is fixedly installed on the side surface of the connecting plate.

5. A power head assembly according to claim 1, characterized in that: An oil pump and an oil suction filter are respectively provided at both ends of the other side of the power head reduction box.

6. A power head assembly according to claim 1, characterized in that: A backing plate is provided on the other side of the lifting ear, a through slot is provided inside the backing plate and the lifting ear, and a connecting bolt is provided inside the through slot and the hydraulic direct-acting brake.

7. A power head assembly according to claim 6, characterized in that: Clamping plates are provided on both sides of the hydraulic direct-acting brake. The side surfaces of the clamping plates are rotatably connected to adjusting screws. The outer side surfaces of the adjusting screws are threadedly connected to positioning plates. The positioning plates are fixedly mounted on the sides of the lifting ears.

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