A hydraulic telescopic heading machine cannon head shield device

Abstract

This invention discloses a hydraulic telescopic tunneling machine head cover, relating to the field of tunneling machine technology. It includes a head body and a machine body. The head body is installed on the left side of the machine body. First threaded holes are provided on both the front and rear sides of the machine body near the left side. Movable threaded rods are threaded into each of these first threaded holes. A round tube is fitted around the outer edge of each movable threaded rod. Through the cooperation of the head body, hydraulic cylinder, cover plate, and housing, when the cover plate needs to be disassembled, rotating the limiting plate causes the movable threaded rod to rotate, moving it out of the threaded hole on the machine body surface. The movable threaded rod then moves out of the round tube and the limiting plate, causing the hydraulic cylinder to lose its limiting function. The cover plate then moves to the left, causing the hydraulic cylinder to move to the left, thus allowing the cover plate to be disassembled from the machine body surface. This facilitates maintenance and improves the flexibility of the device.

Description

Technical Field

[0001] This invention relates to the field of tunneling machine technology, specifically to a hydraulic telescopic tunneling machine head guard. Background Technology

[0002] Tunneling machines are important pieces of equipment for tunneling operations. The operating status and safety protection of tunneling machines are important control targets for safe production. It is required that all performance indicators of tunneling machines must meet the standards before normal operation can be carried out, and the blasting head also needs to be protected.

[0003] However, existing tunneling machine head guards have some problems in use. The existing guards are not easy to adjust in position. The existing guards can usually only be used to protect the head after it stops working. However, when the head is working, the dust generated and the rocks flying during the tunneling process may cause damage to the tunneling machine or the operators. At the same time, it is not easy to adjust the protective angle of the guard. The existing guards are usually fixed on the surface of the tunneling machine. If the guard malfunctions, it will be inconvenient to repair or replace it with a new one. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the purpose of this invention is to provide a hydraulic telescopic tunneling machine gun head cover.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic telescopic tunneling machine blast head cover, comprising a blast head body and a machine body. The blast head body is installed on the left side of the machine body. First threaded holes are provided on both the front and rear sides of the machine body near the left side. Movable threaded rods are threaded into the first threaded holes. A circular tube is fitted onto the outer edge of each movable threaded rod. A limiting plate is fixedly connected to the end of each circular tube away from the machine body. A through hole is provided on each limiting plate, and the through hole is interconnected with the inner cavity of the circular tube. The through hole is fitted onto the outer edge of the movable threaded rod. A limiting disc is fixedly connected to the end of each movable threaded rod away from the machine body. A gear is fixedly connected to the outer edge of each circular tube near the machine body. A baffle plate is provided on the top of the machine body near the left side. Two U-shaped plates are fixedly connected to the bottom of the baffle plate near the right side. A hydraulic cylinder is fixedly connected to the left side of each limiting plate, and the left side of each hydraulic cylinder is hinged to the inner cavity of an adjacent U-shaped plate.

[0006] Preferably, a housing is fixedly connected to both the front and rear sides of the shield near the bottom, a pump is fixedly connected to the top of the housing near the left side, a hose is fixedly connected to the left side of the pump, several nozzles are fixedly connected to the side of the shield near the machine body, a fixed pipe is fixedly connected between two adjacent nozzles, and the end of the hose away from the pump is fixedly connected to the outer edge of the adjacent nozzle.

[0007] Preferably, each of the box bodies has a horizontal plate fixedly connected to its bottom, and each horizontal plate has a T-slot at its bottom. A connecting hole is provided on the right side of each horizontal plate, and the connecting hole and the T-slot are interconnected. Two T-blocks are movably connected within the T-slot, and each T-block has a second threaded hole in its inner cavity. A motor is located on the right side of the horizontal plate, and a double-threaded rod is fixedly connected to the motor's power output shaft. The left end of the double-threaded rod passes through the connecting hole and is threaded through two second threaded holes, and inserted into the left side of the T-slot. Each T-block has a first U-block fixedly connected to its bottom, and each first U-block has a swing plate hinged to its inner cavity. A second U-block is hinged between the two swing plates. Each second U-block has a vertical rod fixedly connected to its bottom, and a connecting seat is fixedly connected to the bottom end of each vertical rod.

[0008] Preferably, a convex plate is fixedly connected to the top of the machine body. Two cavities are opened in the inner cavity of the convex plate near the left side. Two limiting holes are opened on the left side of the convex plate. The limiting holes and cavities are interconnected. The diameter of the cavity is larger than the diameter of the limiting hole. A movable disk is movably connected to each cavity. A movable rod is fixedly connected to the left side of each movable disk. The left end of the movable rod passes through the limiting hole. A movable block is fixedly connected to the left end of both movable rods. A second spring is sleeved on the outer edge of each movable rod. The left end of the second spring is fixedly connected to the left side of the cavity, and the right end of the second spring is fixedly connected to the left side of the movable disk.

[0009] Preferably, a through groove is provided near the bottom of the inner cavity of the convex plate, and an N-shaped rod is inserted through the through groove. Two racks are fixedly connected to the bottom end of the N-shaped rod, and the racks and gears are meshed with each other. Slide grooves are provided on both the front and rear sides of the machine body. A slider is fixedly connected to the side of the rack near the machine body. The slider is movably connected in the adjacent slide groove. Electric telescopic rods are provided on both the front and rear sides of the convex plate near the right side. The bottom of the electric telescopic rod is fixedly connected to the top of the machine body. An adjustment plate is fixedly connected to the left end of the electric telescopic rod. A fixing post is fixedly connected to the left side of the adjustment plate. The left ends of the two fixing posts are fixedly connected to the outer edge of the N-shaped rod.

[0010] Preferably, a vertical hole is provided at the top of the shield near the right side, and an insert rod is inserted through the vertical hole. A blind hole is provided at the top of the movable block, and the bottom end of the insert rod is located in the blind hole. The right side of the insert rod is inclined near the bottom. A fixing plate is fixedly connected to the top of the insert rod. A first spring is sleeved on the outer edge of the insert rod. The top end of the first spring is fixedly connected to the bottom of the fixing plate, and the bottom end of the first spring is fixedly connected to the top of the shield.

[0011] Preferably, a feed pipe is provided through the top of the box near the right side and is fixedly connected to it. Each feed pipe has a sealing plug at the top. Each box has a fixing plate on the top. One side of the fixing plate is fixedly connected to the outer edge of the baffle plate.

[0012] Preferably, the right side of the shielding plate has a first arc-shaped groove, and a second magnet is fixedly connected in the first arc-shaped groove. Three support columns are fixedly connected to the left side of the shielding plate, and a fixing seat is fixedly connected to the left end of each support column. A cover plate is attached to the side of the shielding plate away from the support columns. A second arc-shaped groove is opened on the side of the cover plate close to the shielding plate, and a first magnet is fixedly connected in each of the second arc-shaped grooves. The first magnet and the second magnet are attached to each other.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention, through the cooperation of structures such as the gun head body, hydraulic cylinder, baffle plate, and housing, enables the hydraulic cylinder to move the baffle plate to the left via a U-shaped plate when it is necessary to protect the connection between the gun head body and the machine body. The baffle plate then moves the movable block to the left via a rod, which in turn moves the movable rod, which in turn moves the movable disc and compresses the second spring. Once the baffle plate reaches the connection between the gun head body and the machine body, the hydraulic cylinder can be stopped.

[0015] When the gun head is working, a large amount of dust will be generated. The pump absorbs the water inside the box, and the water enters the nozzle and fixed pipe through the hose. The nozzle sprays the water out, thereby achieving the effect of dust suppression.

[0016] If the gun head needs protection after the machine stops working, first move the insert rod upwards to remove it from the movable block, and then activate the hydraulic cylinder. The hydraulic cylinder moves the baffle plate via the U-shaped plate, moving the insert rod away from the top of the movable block. Then release the insert rod, and the hydraulic cylinder will move the baffle plate gradually to the top left side of the gun head via the U-shaped plate. Next, activate the electric telescopic rod, which moves the rack, which in turn rotates the gear. The gear then rotates the hydraulic cylinder, which moves the baffle plate via the U-shaped plate, moving it to the left side of the gun head. The fixed base and support column support and limit the baffle plate. Then, remove the cover plate and attach the first magnet at the bottom of the cover plate to the second magnet on the baffle plate to limit the installation of the cover plate. The cover plate will then protect the top of the gun head.

[0017] If it is necessary to disassemble the baffle, rotate the limit plate. The limit plate drives the movable threaded rod to rotate. The movable threaded rod moves out from the threaded hole on the surface of the machine body. Then the movable threaded rod moves out from the inside of the round tube and the limit plate. The hydraulic cylinder loses its limiting function. Then move the baffle to the left. The baffle drives the hydraulic cylinder to move to the left, so that the baffle can be disassembled from the surface of the machine body. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a bottom-view perspective view of the present invention;

[0020] Figure 3 This is a diagram showing the movement state of the shielding plate of the component of the present invention;

[0021] Figure 4 This is a bottom view of the cover plate structure of the component of the present invention;

[0022] Figure 5 This is a partial schematic diagram of the gun head body of the component of the present invention;

[0023] Figure 6 This is a schematic diagram of the shielding plate structure of the component of the present invention;

[0024] Figure 7 This is a bottom view of the shielding plate structure of the component of the present invention;

[0025] Figure 8 This is a front view of the insertion rod of the component of the present invention;

[0026] Figure 9 This is a schematic diagram of the component housing structure of the present invention;

[0027] Figure 10 This is an exploded view of the horizontal plate of the component of the present invention;

[0028] Figure 11 This is a schematic diagram of the hydraulic cylinder structure of the component of the present invention;

[0029] Figure 12 This is a partial schematic diagram of the protruding plate of the component of the present invention;

[0030] Figure 13 This is a schematic diagram of the rack structure of the component of the present invention;

[0031] Figure 14 This is a top view of the movable block of the component of the present invention.

[0032] Labels in the diagram: 1. Cannon head body; 2. Machine body; 3. Protruding plate; 4. Baffle plate; 5. Fixing plate; 6. Cover plate; 7. First magnet; 8. Box body; 9. Support column; 10. Fixing seat; 11. U-shaped plate; 12. Second magnet; 13. Fixing plate; 14. Insert rod; 15. First spring; 16. Pump; 17. Hose; 18. Nozzle; 19. Fixing pipe; 20. Feed pipe; 21. Sealing plug; 22. Horizontal plate; 23. Vertical rod; 24. Connecting seat; 2 5. Motor; 26. Double-threaded rod; 27. T-block; 28. First U-block; 29. ​​Swing plate; 30. Second U-block; 31. Hydraulic cylinder; 32. Limiting plate; 33. Round tube; 34. Gear; 35. Movable threaded rod; 36. Limiting disc; 37. Movable block; 38. Electric telescopic rod; 39. Adjusting disc; 40. Fixed column; 41. N-shaped rod; 42. Rack; 43. Slider; 44. Movable rod; 45. Second spring; 46. Movable disc. Detailed Implementation

[0033] Please see Figure 1-14 This invention provides a technical solution: a hydraulic telescopic tunneling machine gun head cover, comprising a gun head body 1 and a machine body 2. The gun head body 1 is installed on the left side of the machine body 2. First threaded holes are provided on both the front and rear sides of the machine body 2 near the left side. Movable threaded rods 35 are threaded into each of the first threaded holes. Round tubes 33 are fitted onto the outer edges of the movable threaded rods 35. Limiting plates 32 are fixedly connected to the ends of the round tubes 33 away from the machine body 2. Through holes are provided on the limiting plates 32, communicating with the inner cavity of the round tubes 33. The through holes are fitted onto the outer edges of the movable threaded rods 35. Limiting discs 36 are fixedly connected to the ends of the movable threaded rods 35 away from the machine body 2. The outer edge of the round tubes 33 is located on the side near the machine body 2. Gears 34 are fixedly connected to all parts. A baffle plate 4 is provided on the top of the machine body 2 near the left side. Two U-shaped plates 11 are fixedly connected to the bottom of the baffle plate 4 near the right side. Hydraulic cylinders 31 are fixedly connected to the left side of the limiting plate 32. The left side of the hydraulic cylinders 31 is hinged to the inner cavity of the adjacent U-shaped plates 11. Boxes 8 are fixedly connected to the front and rear sides of the baffle plate 4 near the bottom. A pump 16 is fixedly connected to the top of the box 8 near the left side. A hose 17 is fixedly connected to the left side of the pump 16. Several nozzles 18 are fixedly connected to the side of the baffle plate 4 near the machine body 2. A fixed pipe 19 is fixedly connected between two adjacent nozzles 18. The end of the hose 17 away from the pump 16 is fixedly connected to the outer edge of the adjacent nozzle 18.

[0034] The bottom of each housing 8 is fixedly connected to a horizontal plate 22. Each horizontal plate 22 has a T-slot at its bottom. A connecting hole is located on the right side of the horizontal plate 22, and the connecting hole and the T-slot are interconnected. Two T-blocks 27 are movably connected within the T-slot. Each T-block 27 has a second threaded hole in its inner cavity. A motor 25 is located on the right side of the horizontal plate 22. The power output shaft of the motor 25 is fixedly connected to a double-threaded rod 26. The left end of the double-threaded rod 26 passes through the connecting hole and is threaded through both second threaded holes, then inserted into the left side of the T-slot. Each block 27 has a first U-shaped block 28 fixedly connected to its bottom. Each first U-shaped block 28 has a swing plate 29 hinged to its inner cavity. A second U-shaped block 30 is hinged between the two swing plates 29. Each second U-shaped block 30 has a vertical rod 23 fixedly connected to its bottom. Each vertical rod 23 has a connecting seat 24 fixedly connected to its bottom end. A protruding plate 3 is fixedly connected to the top of the body 2. The protruding plate 3 has two cavities near its left side. Two limiting holes are opened on the left side of the protruding plate 3. The limiting holes and cavities are interconnected. The diameter of the cavity is larger than the diameter of the limiting hole. Each cavity contains... A movable plate 46 is connected to the movable plate 46. Movable rods 44 are fixedly connected to the left side of each movable plate 46. The left end of each movable rod 44 passes through a limiting hole. A movable block 37 is fixedly connected to the left end of both movable rods 44. A second spring 45 is fitted onto the outer edge of each movable rod 44. The left end of each second spring 45 is fixedly connected to the left side of the cavity. The right end of each second spring 45 is fixedly connected to the left side of the movable plate 46. A through groove is opened near the bottom of the inner cavity of the protruding plate 3. An N-shaped rod 41 passes through the through groove. Two racks 42 are fixedly connected to the bottom end of the N-shaped rod 41. 2 and gear 34 are meshed with each other. Slide grooves are provided on both the front and rear sides of the machine body 2. Slide sliders 43 are fixedly connected to the side of the rack 42 near the machine body 2. Slide sliders 43 are movably connected in adjacent slide grooves. Electric telescopic rods 38 are provided on both the front and rear sides of the convex plate 3 near the right side. The bottom of the electric telescopic rods 38 is fixedly connected to the top of the machine body 2. An adjustment plate 39 is fixedly connected to the left end of the electric telescopic rods 38. A fixing post 40 is fixedly connected to the left side of the adjustment plate 39. The left ends of the two fixing posts 40 are fixedly connected to the outer edge of the N-shaped rod 41.

[0035] A vertical hole is provided on the top right side of the baffle plate 4, through which an insertion rod 14 is inserted. A blind hole is provided on the top of the movable block 37, and the bottom end of the insertion rod 14 is located in the blind hole. The right side of the insertion rod 14 is inclined near the bottom. A fixed plate 13 is fixedly connected to the top of the insertion rod 14. A first spring 15 is sleeved on the outer edge of the insertion rod 14. The top end of the first spring 15 is fixedly connected to the bottom of the fixed plate 13, and the bottom end of the first spring 15 is fixedly connected to the top of the baffle plate 4. A feed pipe 20 is provided on the top right side of the box body 8 and is fixedly connected to it. The top of the feed pipe 20 is sealed. The top of the plug 21 and the box 8 are both equipped with a fixing plate 5. One side of the fixing plate 5 is fixedly connected to the outer edge of the shield 4. The right side of the shield 4 is provided with a first arc-shaped groove, and a second magnet 12 is fixedly connected in the first arc-shaped groove. Three support columns 9 are fixedly connected to the left side of the shield 4. Each support column 9 is fixedly connected to a fixing seat 10 at its left end. The side of the shield 4 away from the support columns 9 is fitted with a cover plate 6. The side of the cover plate 6 close to the shield 4 is provided with a second arc-shaped groove, and a first magnet 7 is fixedly connected in the second arc-shaped groove. The first magnet 7 and the second magnet 12 are fitted together.

[0036] Working principle: When the machine body 2 starts working, the gun head body 1 starts to rotate. First, the hydraulic cylinder 31 is activated. The hydraulic cylinder 31 drives the baffle plate 4 to move to the right through the U-shaped plate 11. The baffle plate 4 moves out from the top of the gun head body 1. The baffle plate 4 drives the insertion rod 14 to move. When the baffle plate 4 moves to the top of the movable block 37, the bottom end of the insertion rod 14 will contact the top of the movable block 37. The insertion rod 14 drives the first spring 15 to be stretched through the fixed plate 13. When the insertion rod 14 moves to the blind hole at the top of the movable block 37, the bottom end of the insertion rod 14 will enter the blind hole at the top of the movable block 37, so that the baffle plate 4 is connected to the movable block 37 through the insertion rod 14. If it is necessary to shield and protect the connection between the gun head body 1 and the machine body 2, the hydraulic cylinder 31 drives the U-shaped plate 11 to move the baffle plate 4 to the right. Plate 11 moves the baffle 4 to the left. The baffle 4 moves the movable block 37 to the left via the insert rod 14. The movable block 37 moves the movable rod 44, which in turn moves the movable disc 46 and compresses the second spring 45. When the baffle 4 moves to the connection between the gun head body 1 and the machine body 2, the hydraulic cylinder 31 stops. When the gun head body 1 is working, a large amount of dust will be generated. At this time, the pump 16 is started. The pump 16 absorbs the water inside the box 8. The water enters the nozzle 18 and the fixed pipe 19 through the hose 17. The nozzle 18 sprays the water out, thereby achieving the effect of dust suppression. When the water inside the box 8 is insufficient, the sealing plug 21 is removed, and water is poured into the box 8 through the feed pipe 20. If the shielding plate 4 is heavy and may tilt, start the motor 25. The motor 25 drives the double-threaded rod 26 to rotate, which in turn moves the T-block 27. The T-block 27 moves within the T-groove of the horizontal plate 22, which in turn moves the first U-block 28. The first U-block 28 then moves the swing plate 29, which in turn moves the second U-block 30 downward. The second U-block 30 then moves the vertical rod 23 downward, which in turn moves the connecting seat 24 downward. The connecting seat 24 will then contact the ground, thus supporting the shielding plate 4. If the machine body 2 stops working and protection of the gun head body 1 is required, first move the insert rod 14 upward, moving the insert rod 14 from the movable block 37. The internal parts are moved out, and hydraulic cylinder 31 is activated. Hydraulic cylinder 31 moves the baffle plate 4 via U-shaped plate 11, causing the insertion rod 14 to move away from the top of movable block 37. Then, the insertion rod 14 is released, and hydraulic cylinder 31 moves the baffle plate 4 gradually to the top left side of the gun head body 1 via U-shaped plate 11. Then, electric telescopic rod 38 is activated. Electric telescopic rod 38 moves N-shaped rod 41 via adjusting plate 39 and fixed column 40. N-shaped rod 41 moves rack 42, rack 42 moves slider 43, rack 42 drives gear 34 to rotate, gear 34 drives round tube 33 to rotate, round tube 33 drives hydraulic cylinder 31 to rotate via limiting plate 32, and hydraulic cylinder 31 moves baffle plate 4 via U-shaped plate 11.This moves the shield 4 to the left side of the gun head body 1, so that the bottom of the fixing base 10 contacts the ground. The fixing base 10, together with the support column 9, supports and limits the shield 4. Then, the cover plate 6 is taken out, and the first magnet 7 at the bottom of the cover plate 6 is attached to the second magnet 12 on the shield 4, thereby limiting the installation of the cover plate 6. The cover plate 6 will shield and protect the top of the gun head body 1. If it is necessary to move the shield 4 away from the connection between the gun head body 1 and the machine body 2, the shield 4 can be moved to the top of the machine body 2. At this time, the electric telescopic rod 38 drives the N-shaped rod 41 to move to the right through the adjusting plate 39 and the fixing column 40. The N-shaped rod 41 drives the gear 34 to rotate. The gear 34 passes through the round tube 33 and the limiting... Position plate 32 drives hydraulic cylinder 31 to rotate to the right until the baffle plate 4 rotates to the top of the convex plate 3. Then, the electric telescopic rod 38 stops, and hydraulic cylinder 31 starts, causing the baffle plate 4 to move downwards and fit against the top of the convex plate 3. If it is necessary to disassemble the baffle plate 4, rotate the limiting plate 36. The limiting plate 36 drives the movable threaded rod 35 to rotate, causing the movable threaded rod 35 to move out of the threaded hole on the surface of the machine body 2. The movable threaded rod 35 then moves out from inside the round tube 33 and the limiting plate 32, causing the hydraulic cylinder 31 to lose its limiting function. Then, move the baffle plate 4 to the left. The baffle plate 4 drives the hydraulic cylinder 31 to move to the left, allowing the baffle plate 4 to be disassembled from the surface of the machine body 2.

Claims

1. A hydraulic telescopic tunneling machine gun head cover, comprising a gun head body (1) and a machine body (2), wherein the gun head body (1) is installed on the left side of the machine body (2), characterized in that: The machine body (2) has a first threaded hole on both the front and rear sides near the left side. A movable threaded rod (35) is threaded into each of the first threaded holes. A round tube (33) is fitted on the outer edge of each movable threaded rod (35). A limit plate (32) is fixedly connected to the end of each round tube (33) away from the machine body (2). A through hole is opened on each limit plate (32). The through hole and the inner cavity of the round tube (33) are interconnected. The through hole is fitted on the outer edge of the movable threaded rod (35). A limit plate (36) is fixedly connected to the end of each movable threaded rod (35) away from the machine body (2). A gear (34) is fixedly connected to the side of the outer edge of the round tube (33) near the machine body (2). The top of the machine body (2) A baffle plate (4) is provided near the left side of the part. Two U-shaped plates (11) are fixedly connected to the bottom of the baffle plate (4) near the right side. A hydraulic cylinder (31) is fixedly connected to the left side of the limiting plate (32). The left side of the hydraulic cylinder (31) is hinged to the inner cavity of the adjacent U-shaped plate (11). A convex plate (3) is fixedly connected to the top of the body (2). Two cavities are opened near the left side of the inner cavity of the convex plate (3). Two limiting holes are opened on the left side of the convex plate (3). The limiting holes and cavities are interconnected. The diameter of the cavity is larger than the diameter of the limiting hole. A movable disc (46) is movably connected in each cavity. A movable rod (44) is fixedly connected to the left side of each movable disc (46). The left end of the movable rod (44) passes through. The limiting hole is provided. The left ends of the two movable rods (44) are fixedly connected to the movable block (37). The outer edges of the movable rods (44) are fitted with second springs (45). The left end of the second springs (45) is fixedly connected to the left side of the cavity, and the right end of the second springs (45) is fixedly connected to the left side of the movable plate (46). The inner cavity of the convex plate (3) is provided with a through groove near the bottom. An N-shaped rod (41) is provided through the through groove. The bottom end of the N-shaped rod (41) is fixedly connected to two racks (42). The racks (42) and the gears (34) are meshed with each other. The front and rear sides of the machine body (2) are provided with sliding grooves. The side of the racks (42) near the machine body (2) is fixedly connected to a slider (43). (43) The convex plate (3) is connected to the adjacent slide groove. Electric telescopic rods (38) are provided on the front and rear sides near the right side. The bottom of the electric telescopic rods (38) is fixedly connected to the top of the body (2). The left end of the electric telescopic rods (38) is fixedly connected to the adjustment plate (39). The left side of the adjustment plate (39) is fixedly connected to the fixing column (40). The left ends of the two fixing columns (40) are fixedly connected to the outer edge of the N-shaped rod (41). The top of the baffle plate (4) near the right side is provided with a vertical hole. The insertion rod (14) is inserted through the vertical hole. The top of the movable block (37) is provided with a blind hole. The bottom end of the insertion rod (14) is located in the blind hole. The right side of the insertion rod (14) near the bottom is inclined.The top of the insertion rod (14) is fixedly connected to a fixing plate (13), and a first spring (15) is sleeved on the outer edge of the insertion rod (14). The top of the first spring (15) is fixedly connected to the bottom of the fixing plate (13), and the bottom of the first spring (15) is fixedly connected to the top of the baffle plate (4).

2. The hydraulic telescopic tunneling machine gun head cover according to claim 1, characterized in that: The shield (4) is fixedly connected to a box (8) on both the front and back sides near the bottom. The top of the box (8) is fixedly connected to a pump (16) near the left side. The left side of the pump (16) is fixedly connected to a hose (17). The shield (4) is fixedly connected to a number of nozzles (18) on the side near the machine body (2). A fixed pipe (19) is fixedly connected between two adjacent nozzles (18). The end of the hose (17) away from the pump (16) is fixedly connected to the outer edge of the adjacent nozzle (18).

3. A hydraulic telescopic tunneling machine gun head cover according to claim 2, characterized in that: The bottom of each box (8) is fixedly connected to a horizontal plate (22). Each horizontal plate (22) has a T-slot at its bottom. A connecting hole is located on the right side of each horizontal plate (22). The connecting hole and the T-slot are interconnected. Two T-blocks (27) are movably connected within the T-slot. A second threaded hole is located within the inner cavity of each T-block (27). A motor (25) is located on the right side of the horizontal plate (22). The power output shaft of the motor (25) is fixedly connected to a double-threaded rod (26). The double-threaded rod (26)... The left end of the double-threaded rod (26) is threaded through two second threaded holes and inserted into the left side of the T-slot. The bottom of the T-block (27) is fixedly connected to a first U-block (28). The inner cavity of the first U-block (28) is hinged to a swing plate (29). The two swing plates (29) are hinged together to a second U-block (30). The bottom of the second U-block (30) is fixedly connected to a vertical rod (23). The bottom end of the vertical rod (23) is fixedly connected to a connecting seat (24).

4. A hydraulic telescopic tunneling machine gun head cover according to claim 3, characterized in that: The top of the box (8) is provided with a feed pipe (20) near the right side and is fixedly connected to it. The top of the feed pipe (20) is provided with a sealing plug (21). The top of the box (8) is provided with a fixing plate (5). One side of the fixing plate (5) is fixedly connected to the outer edge of the shielding plate (4).

5. A hydraulic telescopic tunneling machine gun head cover according to claim 4, characterized in that: The shield (4) has a first arc-shaped groove on its right side, and a second magnet (12) is fixedly connected in the first arc-shaped groove. The shield (4) has three support columns (9) fixedly connected on its left side, and a fixing seat (10) is fixedly connected to the left end of each support column (9). The shield (4) has a cover plate (6) attached to the side away from the support column (9). The cover plate (6) has a second arc-shaped groove on the side close to the shield (4), and a first magnet (7) is fixedly connected in the second arc-shaped groove. The first magnet (7) and the second magnet (12) are attached to each other.

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