Special four-axis double-head milling and drilling equipment for piston rod of column jack of fully-mechanized coal mining hydraulic support of coal mine

Abstract

The invention relates to the technical field of ore extraction, in particular to four-axis double-head milling and drilling special equipment for a piston rod of a column jack of a fully-mechanized coal mining hydraulic support of a coal mine, which comprises a connecting bottom plate, moving wheels and a connecting ring, a driving box is fixedly connected above the connecting bottom plate, and a gear box is fixedly connected above the connecting bottom plate; an adjusting plate is fixedly connected to the outer side of the gear box, a limiting barrel is fixedly connected to the outer side of the gear box, a connecting rack is movably connected to the interior of the limiting barrel, and a connecting top cover is fixedly connected to the upper portion of the gear box. And when the connecting drill bit is clamped, the adjusting hydraulic barrel is started, a fourth gear is in contact engagement with a third gear, the fourth gear is clamped to the outer side of a connecting buckle, the connecting drill bit is pulled out, and in the pulling-out process, the top is supported by starting the lifting hydraulic barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of ore mining, and particularly to a special four-axis double-head milling and drilling equipment for the piston rod of the column jack of a fully mechanized coal mining hydraulic support. Background Technique

[0002] With the continuous development of the coal industry, higher requirements are put forward for the high efficiency and reliability of fully mechanized coal mining equipment. As a key equipment in the fully mechanized coal mining face, the performance of the hydraulic support directly affects the coal mining efficiency and safety. The piston rod of the column jack is an important component of the hydraulic support, and special equipment is needed to improve the processing accuracy and production efficiency to meet the needs of large-scale and high-efficiency coal mining. The intelligentization of coal mines is an important development direction for the future of the industry, requiring more precise and intelligent processing of the parts of fully mechanized coal mining equipment. The four-axis double-head milling and drilling special equipment can achieve automated and high-precision processing, which is in line with the development trend of coal mine intelligentization and helps to improve the intelligent level of the entire coal mine production system.

[0003] For example, the patent document with the publication number CN111663895A discloses a multi-functional two-arm hydraulic drilling equipment for fully-mechanized mining face, which realizes the above-mentioned multi-functional two-arm hydraulic drilling equipment for fully-mechanized mining face, can meet the all-round multi-functional drilling requirements in the fully-mechanized mining face, and improves the problems of small drilling range, low hole layout efficiency and poor safety guarantee in the traditional drilling method. Its structure includes a walking chassis assembly, a support seat assembly, a lifting arm assembly and a drilling arm assembly. The walking chassis assembly is arranged on both sides of the scraper conveyor in the fully-mechanized mining face and can walk along the side of the scraper conveyor in the fully-mechanized mining face. Two groups of support seat assemblies are arranged on the walking chassis assembly along the side of the scraper conveyor in the fully-mechanized mining face, including columns, control valve groups and cantilever arms. The lifting arm assembly includes a slewing bearing I, a telescopic oil cylinder II, a lifting arm I, a lifting arm II, a drilling arm hanging plate, a telescopic oil cylinder III and a steel wire rope I. The drilling arm assembly includes a slewing bearing II, a drilling arm I, a drilling arm II, a telescopic oil cylinder IV, a drilling mechanism, a steel wire rope II, a steel wire rope III and a fixed pulley. The present invention has the following features: 1. The multi-functional two-arm hydraulic drilling equipment for fully-mechanized mining face can meet the drilling requirements with a mining height of 2.5m to 6m in the fully-mechanized mining face and adapt to a large dip angle of 35° in the working face; 2. The equipment is supported by four legs and can move forward and backward along the tooth track direction on the side of the scraper conveyor in the fully-mechanized mining face by driving the tooth disc to rotate through the motor; 3. The drilling angle of the equipment can reach a fan-shaped area of 150° with a horizontal downward angle of 30° and a vertical backward angle of 30°. The drilling requirements for the side and top coal walls can be realized through the lifting and rotation of the lifting arm assembly and the drilling arm assembly, and the hole layout efficiency is high, meeting different drilling processes; 4. All degrees of freedom are controlled by the control valve group, and the high-efficiency drilling requirements of two people operating two arms simultaneously can be realized, playing a role in reducing the number of people and improving efficiency; 5. The emulsion is the direct driving force, which is the most direct and easily available power source in the fully-mechanized mining face; 6. The equipment has two groups of drilling arm mechanisms, which can operate simultaneously and can significantly improve the drilling efficiency; 7. The equipment can be used for different process requirements, and high-efficiency drilling of coal walls and rocks can be realized by replacing different drilling mechanisms. However, there are parts of the device that can be optimized.

[0004] However, the existing devices have the following problems:

[0005] 1. The existing devices mainly directly place the devices above the coal mine for mining, so that during the mining process of the drill bit, when the ore is too hard, the drill bit gets stuck in the ore and it is necessary to manually clean the ore outside the drill bit, which affects the working efficiency of the drill bit.

[0006] 2. At the same time, some devices do not have a device for supporting the ore at the top of the device when the drill bit gets stuck in the ore, so that when cleaning the outside of the drill bit, the ore at the top is affected by the change of force and collapses, affecting the construction safety.

[0007] Therefore, in order to solve the above problems, a special equipment for four-axis double-head milling and drilling of the piston rod of the column jack of the fully-mechanized coal mining hydraulic support is proposed. Summary of the Invention

[0008] The object of the present invention is to provide a special four-axis double-head milling and drilling equipment for the piston rod of the column jack of the fully-mechanized coal mining hydraulic support, so as to solve the problems in the prior art of ore mining mentioned in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: A special four-axis double-head milling and drilling equipment for the piston rod of the column jack of the fully-mechanized coal mining hydraulic support, including a connecting bottom plate, moving wheels and a connecting ring. The outside of the connecting bottom plate is provided with moving wheels, the outside of the moving wheels is provided with a connecting ring, a driving box is fixedly connected above the connecting bottom plate, a connecting drill bit is movably connected to the outside of the driving box, a driving motor is movably connected to the outside of the driving box, a first gear is fixedly connected to the outside of the driving motor, a gear box is fixedly connected above the connecting bottom plate, a transmission shaft is fixedly connected to the outside of the gear box, a fourth gear is movably connected inside the gear box, a ninth gear is movably connected to the outside of the gear box, an adjusting plate is fixedly connected to the outside of the gear box, an adjusting rod is movably connected inside the gear box, a limiting barrel is fixedly connected to the outside of the gear box, a connecting rack is movably connected inside the limiting barrel, a pushing hydraulic rod is fixedly connected to the outside of the gear box, a connecting top cover is fixedly connected above the gear box, and a hydraulic box is fixedly connected above the connecting bottom plate.

[0010] Preferably, a connecting block is fixedly connected above the connecting bottom plate, a line protection pipe is fixedly connected to the outside of the connecting bottom plate, and a connecting wire is fixedly connected inside the line protection pipe.

[0011] Preferably, an activity track is movably connected to the outside of the moving wheels, and a limiting wheel is movably connected inside the activity track

[0012] Preferably, a connecting column is movably connected inside the connecting ring, and a connecting bolt is movably connected above the connecting column.

[0013] Preferably, an activity disk is movably connected to the outside of the driving box, a rotating motor is fixedly connected to the outside of the activity disk, a drill bit fixing shaft is fixedly connected to the outside of the rotating motor, a connecting drill bit is fixedly connected to the outside of the drill bit fixing shaft, a first gear is fixedly connected to the outside of the drill bit fixing shaft, the first gear is movably connected to the outside of the driving box, the first gear is movably connected to the outside of a second gear, a transmission shaft is fixedly connected inside the second gear, and a driving motor is fixedly connected to the outside of the transmission shaft.

[0014] Preferably, a limiting block is fixedly connected inside the gearbox. A transmission shaft is movably connected inside the limiting block. A third gear is fixedly connected to the outer side of the transmission shaft. A fourth gear is movably connected below the third gear. A connecting buckle is movably connected inside the fourth gear. A driving rod is fixedly connected inside the connecting buckle. A fifth gear is fixedly connected below the driving rod. A sixth gear is movably connected to the outer side of the fifth gear. A seventh gear is fixedly connected above the sixth gear. An eighth gear is movably connected above the seventh gear. A ninth gear is fixedly connected to the outer side of the eighth gear. A regulating rod is movably connected below the fourth gear with snap limit.

[0015] Preferably, the third gear, the fourth gear, the seventh gear and the eighth gear are bevel gears, and the fifth gear, the sixth gear and the ninth gear are spur gears.

[0016] Preferably, a regulating hydraulic rod is fixedly connected above the regulating plate. A regulating hydraulic cylinder is movably connected above the regulating hydraulic rod. A regulating rod is fixedly connected to the outer side of the regulating hydraulic cylinder.

[0017] Preferably, a limiting rod is movably connected to the outer side of the limiting barrel. A pushing hydraulic cylinder is fixedly connected to the outer side of the limiting rod. A pushing hydraulic rod is movably connected inside the pushing hydraulic cylinder. A gearbox is fixedly connected to the outer side of the pushing hydraulic rod. A connecting rack is movably connected below the pushing hydraulic rod. A pushing plate is fixedly connected to the outer sides of the connecting rack and the limiting rod. An activity groove is arranged above the connecting rack.

[0018] Preferably, a connecting piston is fixedly connected below the connecting top cover. A limiting column is fixedly connected to the outer side of the connecting top cover. A limiting ring is movably connected to the outer side of the limiting column. A conveying pipe is fixedly connected to the outer side of the connecting piston. A hydraulic tank is fixedly connected to the outer side of the conveying pipe. A pushing frame is fixedly connected to the outer side of the hydraulic tank. A lifting hydraulic cylinder is fixedly connected to the upper part of the pushing frame. A lifting hydraulic rod is movably connected below the lifting hydraulic cylinder.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: By starting the motor, the ore stones are crushed. By starting the transmission motor, the area for crushing the ore is enlarged. When the connecting drill bit gets stuck, by starting the adjusting hydraulic cylinder, the fourth gear is brought into contact and engaged with the third gear, and the fourth gear is clamped outside the connecting buckle. The transmission shaft drives the third gear, the third gear drives the fourth gear, the fourth gear drives the driving rod, the driving rod drives the fifth gear, the fifth gear drives the sixth gear, the sixth gear drives the seventh gear, the seventh gear drives the eighth gear, the eighth gear drives the ninth gear, the ninth gear drives the connecting rack. By starting the pushing hydraulic cylinder, the pushing hydraulic cylinder drives the limiting rod, and the limiting rod and the connecting rack drive the pushing plate to pull out the connecting drill bit. During the pulling-out process, by starting the lifting hydraulic cylinder, the lifting hydraulic cylinder drives the lifting hydraulic rod to deliver the liquid inside the hydraulic tank to the connecting piston, and the connecting piston drives the connecting top cover to move upward to support the top.

[0020] 1. By providing a driving box, a rotating motor, a connecting drill bit, a drill bit fixing shaft, a first gear, a second gear, a transmission shaft, a transmission motor, a movable disk, a gear box, a limiting block, a third gear, a fourth gear, a connecting buckle, a driving rod, a fifth gear, a sixth gear, a seventh gear, an eighth gear, a ninth gear, an adjusting plate, an adjusting hydraulic rod, an adjusting hydraulic cylinder, an adjusting rod, a limiting cylinder, a limiting rod, a pushing hydraulic rod, a connecting rack, a pushing hydraulic cylinder and a pushing plate, the present invention can, when the connecting drill bit gets stuck, through the combined action of the power of the connecting drill bit and the power of the pushing plate, generate a greater force to pull out the drill bit, reducing the time for loosening the stuck drill bit.

[0021] 2. By providing a connecting top cover, a connecting piston, a limiting column, a limiting ring, a delivery pipe, a hydraulic tank, a pushing frame, a lifting hydraulic cylinder and a lifting hydraulic rod, the present invention can support the ore at the top when loosening the drill bit, reducing the risk of ore collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a front view schematic diagram of the structure of the present invention;

[0023] Figure 2 is a top view schematic diagram of the structure of the present invention;

[0024] Figure 3 is a side view schematic diagram of the structure of the present invention;

[0025] Figure 4 is a sectional view schematic diagram of the driving box of the structure of the present invention;

[0026] Figure 5 is a side view schematic diagram of the gear box of the structure of the present invention;

[0027] Figure 6Schematic cross-section of the gearbox of the present invention

[0028] Figure 7 Schematic connection diagram of the fourth gear of the present invention

[0029] Figure 8 Schematic connection diagram of the fifth gear of the present invention

[0030] Figure 9 Schematic side cross-section of the gearbox of the present invention

[0031] In the figure: 1. Connecting base plate; 101. Connecting block; 102. Line protection tube; 103. Connecting wire; 2. Moving wheel; 201. Movable crawler; 202. Limiting wheel; 3. Connecting ring; 301. Connecting column; 302. Connecting bolt; 4. Driving box; 401. Rotating motor; 402. Connecting drill bit; 403. Drill bit fixing shaft; 404. First gear; 405. Second gear; 406. Transmission shaft; 407. Transmission motor; 408. Movable disc; 5. Gearbox; 501. Limiting block; 502. Third gear; 503. Fourth gear; 504. Connecting buckle; 505. Driving rod; 506. Fifth gear; 507. Sixth gear; 508. Seventh gear; 509. Eighth gear; 510. Ninth gear; 6. Adjusting plate; 601. Adjusting hydraulic rod; 602. Adjusting hydraulic barrel; 603. Adjusting rod; 7. Limiting barrel; 701. Limiting rod; 702. Pushing hydraulic rod; 703. Connecting rack; 704. Pushing hydraulic barrel; 705. Pushing plate; 8. Connecting top cover; 801. Connecting piston; 802. Limiting column; 803. Limiting ring; 804. Delivery pipe; 805. Hydraulic tank; 806. Pushing frame; 807. Lifting hydraulic barrel; 808. Lifting hydraulic rod. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-8 , an embodiment provided by the present invention:

[0034] A special equipment for four-axis double-head milling and drilling of the piston rod of the prop jack of a fully-mechanized coal mining hydraulic support, including a connecting bottom plate 1, moving wheels 2 and a connecting ring 3. The moving wheels 2 are arranged on the outer side of the connecting bottom plate 1, and the connecting ring 3 is arranged on the outer side of the moving wheels 2. A driving box 4 is fixedly connected above the connecting bottom plate 1. A connecting drill bit 402 is movably connected to the outer side of the driving box 4, and a driving motor 407 is movably connected to the outer side of the driving box 4. A first gear 404 is fixedly connected to the outer side of the driving motor 407. A gear box 5 is fixedly connected above the connecting bottom plate 1. A transmission shaft 406 is fixedly connected to the outer side of the gear box 5. A fourth gear 503 is movably connected inside the gear box 5. A ninth gear 510 is movably connected to the outer side of the gear box 5. An adjusting plate 6 is fixedly connected to the outer side of the gear box 5. An adjusting rod 603 is movably connected inside the gear box 5. A limiting barrel 7 is fixedly connected to the outer side of the gear box 5. A connecting rack 703 is movably connected inside the limiting barrel 7. A pushing hydraulic rod 702 is fixedly connected to the outer side of the gear box 5. A connecting top cover 8 is fixedly connected above the gear box 5. A hydraulic box 805 is fixedly connected above the connecting bottom plate 1.

[0035] Further, a movable disk 408 is movably connected to the outer side of the driving box 4. A rotary motor 401 is fixedly connected to the outer side of the movable disk 408. A drill bit fixing shaft 403 is fixedly connected to the outer side of the rotary motor 401. The connecting drill bit 402 is fixedly connected to the outer side of the drill bit fixing shaft 403. The first gear 404 is fixedly connected to the outer side of the drill bit fixing shaft 403. The first gear 404 is movably connected to the outer side of the driving box 4 and is also movably connected to the outer side of a second gear 405. A transmission shaft 406 is fixedly connected inside the second gear 405. The driving motor 407 is fixedly connected to the outer side of the transmission shaft 406. By starting the rotary motor 401 and the driving motor 407, the ore can be crushed.

[0036] Furthermore, a limiting block 501 is fixedly connected inside the gearbox 5. A transmission shaft 406 is movably connected inside the limiting block 501. A third gear 502 is fixedly connected to the outer side of the transmission shaft 406. A fourth gear 503 is movably connected below the third gear 502. A connecting buckle 504 is movably connected inside the fourth gear 503. A driving rod 505 is fixedly connected inside the connecting buckle 504. A fifth gear 506 is fixedly connected below the driving rod 505. A sixth gear 507 is movably connected to the outer side of the fifth gear 506. A seventh gear 508 is fixedly connected above the sixth gear 507. An eighth gear 509 is movably connected above the seventh gear 508. A ninth gear 510 is fixedly connected to the outer side of the eighth gear 509. A regulating rod 603 is movably connected below the fourth gear 503 in a snap-limiting manner. Driven by a transmission motor 407, the pushing plate 705 can be moved forward.

[0037] Furthermore, a regulating hydraulic rod 601 is fixedly connected above the regulating plate 6. A regulating hydraulic cylinder 602 is movably connected above the regulating hydraulic rod 601. A regulating rod 603 is fixedly connected to the outer side of the regulating hydraulic cylinder 602. By starting the regulating hydraulic cylinder 602, it can be regulated whether to provide power of the transmission motor 407 to the pushing plate 705.

[0038] Furthermore, a limiting rod 701 is movably connected to the outer side of the limiting cylinder 7. A pushing hydraulic cylinder 704 is fixedly connected to the outer side of the limiting rod 701. A pushing hydraulic rod 702 is movably connected inside the pushing hydraulic cylinder 704. The gearbox 5 is fixedly connected to the outer side of the pushing hydraulic rod 702. A connecting rack 703 is movably connected below the pushing hydraulic rod 702. The pushing plate 705 is fixedly connected to the outer sides of the connecting rack 703 and the limiting rod 701. An activity groove is arranged above the connecting rack 703. By starting the pushing hydraulic cylinder 704, the pushing plate 705 can be moved forward.

[0039] Furthermore, a connecting piston 801 is fixedly connected below the connecting top cover 8. A limiting column 802 is fixedly connected to the outer side of the connecting top cover 8. A limiting ring 803 is movably connected to the outer side of the limiting column 802. A conveying pipe 804 is fixedly connected to the outer side of the connecting piston 801. A hydraulic tank 805 is fixedly connected to the outer side of the conveying pipe 804. A pushing frame 806 is fixedly connected to the outer side of the hydraulic tank 805. A lifting hydraulic cylinder 807 is fixedly connected to the upper part of the pushing frame 806. A lifting hydraulic rod 808 is movably connected below the lifting hydraulic cylinder 807. By starting the lifting hydraulic cylinder 807, the connecting top cover 8 can be moved upward.

[0040] Working principle: During the use of this device, first start the moving wheels 2. The moving wheels 2 drive the movable crawler 201 to rotate, moving the device to a new position. Connect the connecting wire 103. Fix the rear end by rotating the connecting bolt 302. Start the rotating motor 401. The rotating motor 401 drives the drill bit fixing shaft 403 to rotate. The drill bit fixing shaft 403 drives the connecting drill bit 402 to rotate, crushing the ore stones. Start the transmission motor 407. The transmission motor 407 drives the transmission shaft 406 to rotate. The transmission shaft 406 drives the second gear 405 to rotate. The second gear 405 drives the first gear 404. The first gear 404 and the drive box 4 drive each other, causing the two connecting drill bits 402 to rotate relative to each other, expanding the area of the crushed ore. When the connecting drill bit 402 gets stuck, start the adjusting hydraulic cylinder 602. The adjusting hydraulic cylinder 602 drives the adjusting hydraulic rod 601, moving the adjusting hydraulic cylinder 602 upward. The adjusting hydraulic cylinder 602 drives the adjusting rod 603 upward. The adjusting rod 603 drives the fourth gear 503 upward, bringing the fourth gear 503 into contact and meshing with the third gear 502, and clamping the fourth gear 503 outside the connecting buckle 504. The transmission shaft 406 drives the third gear 502 to rotate. The third gear 502 drives the fourth gear 503 to rotate. The fourth gear 503 drives the driving rod 505 to rotate. The driving rod 505 drives the fifth gear 506 to rotate. The fifth gear 506 drives the sixth gear 507 to rotate. The sixth gear 507 drives the seventh gear 508 to rotate. The seventh gear 508 drives the eighth gear 509 to rotate. The rotation of the eighth gear 509 drives the ninth gear 510 to rotate. The ninth gear 510 drives the connecting rack 703 to move forward. The connecting rack 703, by starting the pushing hydraulic cylinder 704, drives the limiting rod 701 to move forward. The limiting rod 701 and the connecting rack 703 drive the pushing plate 705 to move forward, pulling out the connecting drill bit 402. During the pulling-out process, start the lifting hydraulic cylinder 807. The lifting hydraulic cylinder 807 drives the lifting hydraulic rod 808 to move up and down, delivering the liquid inside the hydraulic tank 805 to the connecting piston 801. The connecting piston 801 drives the connecting top cover 8 to move upward, providing top support.

[0041] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Any person skilled in the art of this industry can smoothly implement the present invention according to the instructions in the attached drawings and the above description. However, any minor changes, modifications, and equivalent variations made by those skilled in the relevant art within the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and variations made to the above embodiments based on the essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A coal mine fully-mechanized hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment, including: A connecting base plate (1), a moving wheel (2) and a connecting ring (3), wherein the outer side of the connecting base plate (1) is provided with a moving wheel (2), and the outer side of the moving wheel (2) is provided with a connecting ring (3), characterized in that: a driving box (4) is fixedly connected to the top of the connecting base plate (1), a connecting drill bit (402) is movably connected to the outer side of the driving box (4), a transmission motor (407) is movably connected to the outer side of the driving box (4), a first gear (404) is fixedly connected to the outer side of the transmission motor (407), a gear box (5) is fixedly connected to the top of the connecting base plate (1), and a transmission shaft (406) is fixedly connected to the outer side of the gear box (5), The gear box (5) is movably connected to a fourth gear (503) inside, the gear box (5) is movably connected to a ninth gear (510) outside, the gear box (5) is fixedly connected to an adjustment plate (6) outside, the gear box (5) is movably connected to an adjustment rod (603) inside, the gear box (5) is fixedly connected to a limit barrel (7) outside, the limit barrel (7) is movably connected to a connecting rack (703) inside, the gear box (5) is fixedly connected to a pushing hydraulic rod (702) outside, the gear box (5) is fixedly connected to a connecting top cover (8) above, and the connecting bottom plate (1) is fixedly connected to a hydraulic box (805) above.

2. According to claim 1, a coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment, characterized in that: A connection block (101) is fixedly connected to the top of the connection base plate (1), a line protection tube (102) is fixedly connected to the outside of the connection base plate (1), and a connection wire (103) is fixedly connected to the inside of the line protection tube (102).

3. According to claim 1, a coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment, characterized in that: The outer side of the moving wheel (2) is movably connected to a movable crawler belt (201), and the inner side of the movable crawler belt (201) is movably connected to a limiting wheel (202).

4. According to claim 1, a coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment, characterized in that: The interior of the connecting ring (3) is movably connected to a connecting column (301), and the top of the connecting column (301) is movably connected to a connecting bolt (302).

5. According to claim 1, a coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment, characterized in that: The outer side of the driving box (4) is movably connected to a movable disk (408), the outer side of the movable disk (408) is fixedly connected to a rotating motor (401), the outer side of the rotating motor (401) is fixedly connected to a drill fixing shaft (403), the outer side of the drill fixing shaft (403) is fixedly connected to a connecting drill (402), the outer side of the drill fixing shaft (403) is fixedly connected to a first gear (404), the outer side of the first gear (404) is movably connected to the driving box (4), the outer side of the first gear (404) is movably connected to a second gear (405), the interior of the second gear (405) is fixedly connected to a transmission shaft (406), and the outer side of the transmission shaft (406) is fixedly connected to a transmission motor (407).

6. The coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment according to claim 1, characterized in that: The gear box (5) is internally fixedly connected to a limit block (501), the limit block (501) is internally movably connected to a transmission shaft (406), the outer side of the transmission shaft (406) is fixedly connected to a third gear (502), the lower part of the third gear (502) is movably connected to a fourth gear (503), the fourth gear (503) is internally movably connected to a connecting buckle (504), the connecting buckle (504) is internally fixedly connected to a driving rod (505), and the driving rod ( A fifth gear (506) is fixedly connected to the bottom of the gear (505), a sixth gear (507) is movably connected to the outer side of the fifth gear (506), a seventh gear (508) is fixedly connected to the top of the sixth gear (507), an eighth gear (509) is movably connected to the top of the seventh gear (508), a ninth gear (510) is fixedly connected to the outer side of the eighth gear (509), and an adjusting rod (603) is movably connected to the bottom of the fourth gear (503) by a buckle limit.

7. The coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment according to claim 6, characterized in that: The third gear (502), the fourth gear (503), the seventh gear (508) and the eighth gear (509) are bevel gears, and the fifth gear (506), the sixth gear (507) and the ninth gear (510) are spur gears.

8. The coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment according to claim 1, characterized in that: An adjusting hydraulic rod (601) is fixedly connected above the adjusting plate (6), an adjusting hydraulic barrel (602) is movably connected above the adjusting hydraulic rod (601), and an adjusting rod (603) is fixedly connected to the outside of the adjusting hydraulic barrel (602).

9. The coal mine fully-mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment according to claim 1, characterized in that: The outer side of the limit barrel (7) is movably connected to a limit rod (701), the outer side of the limit rod (701) is fixedly connected to a pushing hydraulic barrel (704), the inner side of the pushing hydraulic barrel (704) is movably connected to a pushing hydraulic rod (702), the outer side of the pushing hydraulic rod (702) is fixedly connected to a gear box (5), the lower side of the pushing hydraulic rod (702) is movably connected to a connecting rack (703), the outer sides of the connecting rack (703) and the limit rod (701) are fixedly connected to a pushing plate (705), and a movable groove is provided above the connecting rack (703).

10. The coal mine fully mechanized mining hydraulic support column jack piston rod four-axis double-head milling and drilling special equipment according to claim 1, characterized in that: A connecting piston (801) is fixedly connected to the bottom of the connecting top cover (8), a limiting column (802) is fixedly connected to the outside of the connecting top cover (8), a limiting ring (803) is movably connected to the outside of the limiting column (802), a delivery pipe (804) is fixedly connected to the outside of the connecting piston (801), a hydraulic box (805) is fixedly connected to the outside of the delivery pipe (804), a pushing frame (806) is fixedly connected to the outside of the hydraulic box (805), a lifting hydraulic barrel (807) is fixedly connected to the upper part of the pushing frame (806), and a lifting hydraulic rod (808) is movably connected to the bottom of the lifting hydraulic barrel (807).

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