A rotating telescopic structure of a tunnel boring machine

Abstract

The present invention discloses a rotating telescopic structure of a tunneling machine, comprising a connecting frame, a sleeve is arranged on the surface of the connecting frame, a moving cylinder is slidably connected to the inner wall of the sleeve, a reducer is arranged at one end of the moving cylinder, a working head is arranged at one end of the reducer, cylinder one is arranged on both sides of the sleeve, the output ends of the cylinder one are arranged on the surface of the moving cylinder, two cylinders two are arranged on the surface of the connecting frame, the output ends of the cylinder two are arranged on the surface of the sleeve, a protective device is arranged on the surface of the cylinder one, the protective device comprises a telescopic sleeve, the telescopic sleeve is arranged on one side of the cylinder one, a positioning ring is fixedly connected to the surface of the cylinder one, a slot is opened on the surface of the positioning ring, and the protective device is arranged to facilitate protection of the equipment, and the phenomenon that the telescopic part of the telescopic cylinder in the equipment is easily disturbed by gravel and dust during the telescopic process can be effectively reduced, and the situation that the equipment is damaged and affects the service life can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel boring machines, in particular to a rotary telescopic structure of a tunnel boring machine. Background Art

[0002] In recent years, with the rapid development of my country's coal industry, the coal machinery industry, which is closely related to it, has also received increasing attention. Tunneling and mining are important production links in coal mine production.

[0003] A roadheader is a machine used to dig tunnels on flat ground. There are many types of roadheaders: according to the operating object, they are divided into ordinary machines and tunnel boring machines; according to the operating mode, they are divided into open roadheaders and shield roadheaders. Working mode: It is mainly composed of a traveling mechanism, a working mechanism, a loading mechanism and a transfer mechanism. As the traveling mechanism moves forward, the cutting head in the working mechanism continuously breaks up the rock and transports the broken rock away. It has the advantages of safety, high efficiency and good tunnel quality, but it is expensive, has a complex structure and suffers large losses.

[0004] However, the existing processing equipment has the following shortcomings:

[0005] When the existing rotary telescopic mechanism of the tunnel boring machine is in use, such as CN205277414U, when working, the cutting telescopic cylinder provides power and controls the stroke for realizing the telescopic action of the cutting part, the telescopic guide column is used to guide the telescopic action of the cutting part, and the cutting lifting cylinder is used to realize the lifting action of the cutting part. When the cutting telescopic cylinder extends and / or retracts, the telescopic inner cylinder slides relative to the telescopic outer cylinder along the telescopic guide column, and extends or retracts under the lubrication and protection of the sliding bearing, driving the cutting reducer, the telescopic cantilever section, and the cutting head assembly The cutting part is extended or retracted synchronously to realize the telescopic movement of the cutting part. When the cutting lifting cylinder performs the telescopic movement, it drives the telescopic outer cylinder to rotate, and then drives the cutting reducer, the telescopic cantilever section and the cutting head assembly to rotate through the telescopic inner cylinder, so as to realize the lifting and lowering of the cutting head assembly without affecting the telescopic movement of the cutting part. However, during the telescopic operation, the telescopic cylinder is easily disturbed by gravel and dust during the extension process, which can easily cause damage to the telescopic cylinder, resulting in the equipment being unable to perform telescopic operations. Improvements are needed in this regard.

[0006] Therefore, we propose a rotating and telescopic structure of a tunnel boring machine to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide a rotating telescopic structure of a tunnel boring machine, wherein an insert ring is inserted into a slot on the surface of a positioning ring, the insert rod is loosened, and the first spring drives the insert rod to be inserted into a second hole on the surface of the insert ring, pushing the push rod and the clamping rod. The second spring is deformed under force to generate elastic force, pulling the telescopic sleeve to a certain position, and the push rod is loosened. The second spring drives the clamping rod to be inserted into a groove on the surface of the barrier rod. The protective sleeve can provide protection when the equipment is telescoped, so as to solve the problems raised by the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotating and telescopic structure of a tunnel boring machine, comprising a connecting frame, a sleeve is arranged on the surface of the connecting frame, a moving cylinder is slidably connected to the inner wall of the sleeve, a reducer is arranged at one end of the moving cylinder, a working head is arranged at one end of the reducer, cylinder 1 is arranged on both sides of the sleeve, the output end of the cylinder 1 is arranged on the surface of the moving cylinder, two cylinders 2 are arranged on the surface of the connecting frame, and the output end of the cylinder 2 is arranged on the surface of the sleeve.

[0009] Preferably, a protective device is provided on the surface of the cylinder one, and the protective device includes a telescopic sleeve, which is provided on one side of the cylinder one, a positioning ring is fixedly connected to the surface of the cylinder one, a slot is provided on the surface of the positioning ring, an insert ring is fixedly connected to the side of the telescopic sleeve close to the positioning ring, the insert ring is clamped with the inner wall of the slot, a hole one is provided on the surface of the positioning ring, an insert rod is slidably connected to the inner wall of the hole one, a hole two is provided on the surface of the insert ring, the insert rod is clamped with the inner wall of the hole two, and one end of the telescopic sleeve is fixedly connected to two fixed A block, a surface of the fixed block is provided with a hole three, the inner wall of the hole three is slidably connected with a push rod, one end of the push rod is fixedly connected with a clamping rod, and a surface of the moving cylinder close to the clamping rod is fixedly connected with two baffle rods, the surface of the baffle rod is provided with a groove, and the clamping rod is clamped with the inner wall of the groove, and the telescopic sleeve can be positioned by arranging an insert rod and a positioning ring, and at the same time, the clamping rod cooperates with the baffle rod, so that the moving cylinder can drive the telescopic sleeve to move telescopically, which is convenient for protecting the extended part of the telescopic cylinder in the equipment and reduces the damage and low life of the telescopic cylinder in the equipment.

[0010] Preferably, the longitudinal section of the baffle rod is in an inverted L-shape, and the groove on the surface of the baffle rod is rectangular. By providing the baffle rod, it is convenient to cooperate with the clamping rod, thereby improving the overall stability.

[0011] Preferably, a second spring is sleeved on the surface of the push rod, and the two ends of the second spring are fixedly connected to the surfaces of the push rod and the fixed block respectively. By providing the second spring, it is convenient to control the push rod and the clamping rod to reset, and at the same time, the binding effect of the clamping rod is improved.

[0012] Preferably, a first spring is sleeved on the surface of the insertion rod, and the two ends of the first spring are fixedly connected to the surfaces of the insertion rod and the positioning ring respectively. By providing the first spring, it is convenient to control the resetting of the insertion rod and improve the binding effect of the insertion rod on the insertion ring.

[0013] Preferably, a scraping device is provided on the side of the sleeve close to the moving cylinder, and the scraping device includes a fixing ring, and there are two fixing rings, which are arranged on one side of the sleeve, and a scraping block is fixedly connected to the surface of the fixing ring, and two hollow blocks are fixedly connected to the surface of the fixing ring, and a mounting rod is fixedly connected to the side of the sleeve close to the hollow block, and the mounting rod is clamped with the inner wall of the hollow block, and a sliding groove is provided on the inner wall of the hollow block, and a retaining ring is slidably connected to the inner wall of the sliding groove, and a limiting groove is provided on the surface of the mounting rod, and the retaining ring is clamped with the inner wall of the limiting groove. By setting the retaining ring, the fixing ring and the scraping block can be positioned, which is convenient for cleaning when the equipment is extended and retracted as a whole, and can effectively reduce the phenomenon of equipment wear and jamming caused by dust and particulate matter on the surface of the equipment during extension and retraction.

[0014] Preferably, a third spring is fixedly connected to one side of the retaining ring corresponding to the surface of the fixing ring, and there are two third springs. By providing the third spring, it is convenient to control the retaining ring to reset, and at the same time, the binding effect of the retaining ring is improved.

[0015] Preferably, a control rod is fixedly connected to one side surface of the retaining ring, and the control rod is cylindrical. By providing the control rod, it is easy to drive the retaining ring to move, and it is convenient to install and disassemble.

[0016] Preferably, a spraying device is provided on the surface of the sleeve, and the spraying device includes a fixed seat, a water pipe is fixedly connected to the surface of the fixed seat, a delivery pipe is fixedly connected to one end of the water pipe, a spraying rack is fixedly connected to the surface of the water pipe, and a plurality of nozzles 1 arranged at equal intervals are fixedly connected to the surface of the spraying rack 1. By arranging the nozzles 1, the surface of the movable cylinder can be sprayed, some particles can be sprayed off, and the possibility of particles damaging the scraping block can be reduced.

[0017] Preferably, a spray rack 2 is provided on the surface of the water pipe, and a plurality of spray heads 2 arranged at equal intervals are fixedly connected to the surface of the spray rack 2. By providing the spray heads 2, stains on the surface of the scraping block can be sprayed and washed, thereby improving the scraping effect.

[0018] Preferably, the longitudinal sections of the spray rack 1 and the spray rack 2 are arranged in an arc shape, and the spray head 2 on the surface of the spray rack 2 is arranged at a certain angle. By arranging the inclined spray head 2, the cleaning effect of the scraper block can be improved.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the device drives the working head to rotate through the speed reducer, and at the same time, the cylinder two can drive the moving cylinder to extend and retract, and the cylinder two can drive the device to lift and retract. By setting the protective device, when the device needs to be used, the plug ring is inserted into the slot on the surface of the positioning ring, and the plug rod is loosened. The first spring drives the plug rod to be inserted into the second hole on the surface of the plug ring to push the push rod and the clamping rod. The second spring is deformed under force to generate elastic force, and the telescopic sleeve is pulled to a certain position. The push rod is loosened, and the second spring drives the clamping rod to be inserted into the groove on the surface of the baffle rod. The protective sleeve can be used for protection when the device is extended and retracted. By setting the protective device, it is convenient to protect the device, which can effectively reduce the phenomenon that the telescopic part of the telescopic cylinder in the device is easily disturbed by gravel and dust during the telescopic process, and reduce the situation that the equipment is damaged and affects its service life.

[0021] 2. The present invention provides a scraping device. When the equipment needs to be used, the control rod drives the retaining ring to move to a certain extent, and the third spring is deformed by force to generate elastic force, so that the hollow block is sleeved in the mounting rod. The control rod is loosened, and the third spring releases the elastic force to drive the retaining ring to reset. The retaining ring is inserted into the limiting groove on the surface of the mounting rod. During the extension and retraction process of the equipment, the scraping block can perform scraping treatment, which reduces the phenomenon that the surface of the equipment is contaminated with particles and dust and affects the contraction during the extension and retraction process, and reduces the situation that the equipment is easily stuck and scratched during contraction, thereby improving the overall practicality of the equipment.

[0022] 3. The present invention is provided with a spraying device. When the equipment needs to be used, water is supplied to the water pipe through the delivery pipe. The water pipe can deliver water to the spray rack one and the spray rack two. The nozzle one can cooperate with the nozzle two to spray. The nozzle one can spray the particles contaminated by the extended part of the equipment, and the nozzle two can clean the scraping block. By providing the spraying device, it is convenient for the auxiliary equipment to scrape, which can effectively reduce the phenomenon that the equipment is easily damaged when scraping particles for a long time, and reduce the situation that the damage of the equipment affects the scraping effect, thereby improving the overall stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a main structural stereogram of a rotating and telescopic structure of a tunnel boring machine of the present invention;

[0024] Figure 2 It is a bottom-up structural stereogram of a rotating and telescopic structure of a tunnel boring machine of the present invention;

[0025] Figure 3 It is a three-dimensional diagram of the structure of a protective device in a rotating and telescopic structure of a tunnel boring machine of the present invention;

[0026] Figure 4 The invention relates to a rotary telescopic structure of a tunnel boring machine Figure 3 A magnified stereoscopic image of the structure at center A;

[0027] Figure 5 The rotary telescopic structure of a tunnel boring machine of the present invention is Figure 3 The enlarged stereogram of the structure at B in the middle;

[0028] Figure 6 It is a structural stereogram of a dirt scraping device in a rotating and telescopic structure of a tunnel boring machine according to the present invention;

[0029] Figure 7 It is a partial structural stereogram of a dirt scraping device in a rotating and telescopic structure of a roadheader according to the present invention;

[0030] Figure 8 The present invention is a stereoscopic diagram of the structure of a spraying device in a rotating and telescopic structure of a tunnel boring machine.

[0031] In the figure: 1. connecting frame; 2. sleeve; 3. moving cylinder; 4. reducer; 5. working head; 6. cylinder one; 7. protective device; 71. telescopic sleeve; 72. insert ring; 73. positioning ring; 74. insert rod; 75. first spring; 76. stop rod; 77. clamping rod; 78. push rod; 79. second spring; 710. fixed block; 8. scraping device; 81. fixing ring; 82. hollow block; 83. scraping block; 84. mounting rod; 85. stop ring; 86. third spring; 87. control rod; 9. spraying device; 91. fixing seat; 92. water pipe; 93. delivery pipe; 94. spraying frame one; 95. spraying frame two; 96. nozzle one; 97. nozzle two; 10. cylinder two. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-8 As shown, the present invention provides a technical solution: a rotating and telescopic structure of a tunnel boring machine, comprising a connecting frame 1, a sleeve 2 is arranged on the surface of the connecting frame 1, a moving cylinder 3 is slidably connected to the inner wall of the sleeve 2, a reducer 4 is arranged at one end of the moving cylinder 3, a working head 5 is arranged at one end of the reducer 4, cylinders 1 6 are arranged on both sides of the sleeve 2, and the output ends of the cylinders 1 6 are arranged on the surface of the moving cylinder 3, two cylinders 2 10 are arranged on the surface of the connecting frame 1, and the output ends of the cylinders 2 10 are arranged on the surface of the sleeve 2.

[0034] according to Figure 3-6As shown, a protective device 7 is provided on the surface of the cylinder 6, and the protective device 7 includes a telescopic sleeve 71, which is arranged on one side of the cylinder 6, and a positioning ring 73 is fixedly connected to the surface of the cylinder 6, and a slot is provided on the surface of the positioning ring 73, and an insert ring 72 is fixedly connected to the side of the telescopic sleeve 71 close to the positioning ring 73, and the insert ring 72 is clamped with the inner wall of the slot, and a hole 1 is provided on the surface of the positioning ring 73, and an insert rod 74 is slidably connected to the inner wall of the hole 1, and a hole 2 is provided on the surface of the insert ring 72, and the insert rod 74 is clamped with the inner wall of the hole 2, and one end of the telescopic sleeve 71 is fixedly connected to two fixing blocks 710, and the fixing blocks A hole three is provided on the surface of 710, and a push rod 78 is slidably connected to the inner wall of the hole three, and a clamping rod 77 is fixedly connected to one end of the push rod 78. Two baffle rods 76 are fixedly connected to the surface of the moving cylinder 3 close to the clamping rod 77. A groove is provided on the surface of the baffle rod 76, and the clamping rod 77 is clamped with the inner wall of the groove. By setting an insert rod 74 to cooperate with the positioning ring 73, the telescopic sleeve 71 can be positioned. At the same time, the clamping rod 77 cooperates with the baffle rod 76, so that the moving cylinder 3 can drive the telescopic sleeve 71 to telescopically move, which is convenient for protecting the protruding part of the telescopic cylinder in the equipment and reducing the damage and low life of the telescopic cylinder in the equipment.

[0035] according to Figure 5 As shown, the longitudinal section of the blocking rod 76 is in an inverted L-shape, and the groove on the surface of the blocking rod 76 is rectangular. By providing the blocking rod 76, it is convenient to cooperate with the clamping rod 77 to improve the overall stability.

[0036] according to Figure 5 As shown, a second spring 79 is sleeved on the surface of the push rod 78, and the two ends of the second spring 79 are fixedly connected to the surfaces of the push rod 78 and the fixed block 710 respectively. By providing the second spring 79, it is convenient to control the push rod 78 and the locking rod 77 to reset, and at the same time, the binding effect of the locking rod 77 is improved.

[0037] according to Figure 4As shown, the surface of the plug rod 74 is sleeved with a first spring 75, and the two ends of the first spring 75 are fixedly connected to the surfaces of the plug rod 74 and the positioning ring 73 respectively. By setting the first spring 75, it is convenient to control the reset of the plug rod 74, and improve the binding effect of the plug rod 74 on the plug ring 72. The equipment drives the working head 5 to rotate through the reducer 4, and the cylinder 10 can drive the moving cylinder 3 to extend and retract. The cylinder 10 can drive the equipment to lift and retract. By setting the protective device 7, when the equipment needs to be used, the plug ring 72 is inserted into the slot on the surface of the positioning ring 73, and the plug rod 74 is loosened. , the first spring 75 drives the insertion rod 74 to be inserted into the second hole on the surface of the insertion ring 72, pushing the push rod 78 and the clamping rod 77. The second spring 79 is deformed under force to generate elastic force, pulling the telescopic sleeve 71 to a certain position, releasing the push rod 78, and the second spring 79 drives the clamping rod 77 to be inserted into the groove on the surface of the blocking rod 76. The protective sleeve can be used for protection when the equipment is telescopic. By setting the protective device 7, it is convenient to protect the equipment, which can effectively reduce the phenomenon that the telescopic cylinder in the equipment is easily disturbed by gravel and dust during the telescopic process, and reduce the situation that the equipment is damaged and affects its life.

[0038] according to Figure 6-7 As shown, a scraping device 8 is provided on one side of the sleeve 2 close to the moving cylinder 3, and the scraping device 8 includes a fixing ring 81. There are two fixing rings 81, and the two fixing rings 81 are arranged on one side of the sleeve 2. A scraping block 83 is fixedly connected to the surface of the fixing ring 81, and two hollow blocks 82 are fixedly connected to the surface of the fixing ring 81. A mounting rod 84 is fixedly connected to one side of the sleeve 2 close to the hollow blocks 82, and the mounting rod 84 is clamped with the inner wall of the hollow blocks 82. A sliding groove is provided on the inner wall of the hollow blocks 82, and a retaining ring 85 is slidably connected to the inner wall of the sliding groove. A limiting groove is provided on the surface of the mounting rod 84, and the retaining ring 85 is clamped with the inner wall of the limiting groove. By setting the retaining ring 85, the fixing ring 81 and the scraping block 83 can be positioned, which is convenient for cleaning when the equipment is extended and retracted as a whole, and can effectively reduce the phenomenon that the equipment is worn and stuck due to dust and particulate matter on the surface of the equipment when it is extended and retracted.

[0039] according to Figure 6-7 As shown, a third spring 86 is fixedly connected to one side of the retaining ring 85 corresponding to the surface of the fixing ring 81. There are two third springs 86. By providing the third spring 86, it is convenient to control the retaining ring 85 to reset, and at the same time, the binding effect of the retaining ring 85 is improved.

[0040] according to Figure 6-7As shown, a control rod 87 is fixedly connected to one side surface of the retaining ring 85, and the control rod 87 is set in a cylindrical shape. By setting the control rod 87, it is convenient to drive the retaining ring 85 to move, and it is convenient to install and disassemble. By setting the scraper device 8, when the equipment needs to be used, the retaining ring 85 is driven to move to a certain extent by the control rod 87, and the third spring 86 is deformed by force to generate elastic force, and the hollow block 82 is sleeved in the installation rod 84. The control rod 87 is released, and the third spring 86 releases the elastic force to drive the retaining ring 85 to reset. The retaining ring 85 is inserted into the limiting groove on the surface of the installation rod 84. During the extension and retraction process of the equipment, the scraper block 83 can perform scraping processing, which reduces the phenomenon that the surface of the equipment is contaminated with particles and dust and affects the contraction during the extension and retraction process, and reduces the situation that the equipment is easily stuck and scratched when it is contracted, thereby improving the overall practicality of the equipment.

[0041] according to Figure 8 As shown, the surface of the sleeve 2 is provided with a spraying device 9, and the spraying device 9 includes a fixed seat 91, and the surface of the fixed seat 91 is fixedly connected with a water pipe 92, and one end of the water pipe 92 is fixedly connected with a delivery pipe 93, and the surface of the water pipe 92 is fixedly connected with a spraying rack 94, and the surface of the spraying rack 94 is fixedly connected with a plurality of nozzles 96 arranged at equal intervals. By setting the nozzles 96, the surface of the moving cylinder 3 can be sprayed, and some particles can be sprayed off to reduce the situation where the particles damage the scraping block. By setting the spraying device 9, when the equipment needs to be used, through The delivery pipe 93 supplies water to the water pipe 92, and the water pipe 92 can supply water to the spray rack 1 94 and the spray rack 2 95. The nozzle 1 96 can cooperate with the nozzle 2 97 to spray. The nozzle 1 96 can spray the particles contaminated by the extended part of the equipment, and the nozzle 2 97 can clean the scraping block 83. By setting up the spraying device 9, it is convenient for the auxiliary equipment to scrape, which can effectively reduce the phenomenon that the equipment is easily damaged when scraping particles for a long time, and reduce the situation where the equipment is damaged and affects the scraping effect, thereby improving the overall stability of the equipment.

[0042] according to Figure 8 As shown, a spray rack 95 is provided on the surface of the water pipe 92, and a plurality of nozzles 97 arranged at equal intervals are fixedly connected to the surface of the spray rack 95. By setting the nozzles 97, the stains on the surface of the scraping block can be sprayed and washed, thereby improving the scraping effect.

[0043] according to Figure 8 As shown, the longitudinal sections of the spray rack 1 94 and the spray rack 2 95 are arranged in an arc shape, and the spray head 2 97 on the surface of the spray rack 2 95 is arranged at a certain angle. By arranging the inclined spray head 2 97, the cleaning effect of the scraper block 83 can be improved.

[0044] The effect achieved by the entire mechanism is: the equipment drives the working head 5 to rotate through the reducer 4, and at the same time, the cylinder 10 can drive the moving cylinder 3 to extend and retract, and the cylinder 10 can drive the equipment to lift and retract. By setting the protective device 7, when the equipment needs to be used, the plug ring 72 is inserted into the slot on the surface of the positioning ring 73, and the plug rod 74 is loosened. The first spring 75 drives the plug rod 74 to be inserted into the second hole on the surface of the plug ring 72, pushing the push rod 78 and the clamping rod 77. The second spring 79 is deformed by force to generate elastic force, pulling the telescopic sleeve 71 to a The push rod 78 is released, and the second spring 79 drives the card rod 77 to be inserted into the groove on the surface of the blocking rod 76. The protective cover can be used for protection when the equipment is extended and retracted. By setting the protective device 7, it is convenient to protect the equipment, which can effectively reduce the phenomenon that the telescopic cylinder in the equipment is easily disturbed by gravel and dust during the telescopic process, and reduce the situation that the equipment is damaged and affects its life. By setting the scraping device 8, when the equipment needs to be used, the control rod 87 drives the blocking ring 85 to move to a certain position, and the third spring 86 is deformed by force to generate elastic force , the hollow block 82 is sleeved in the mounting rod 84, the control rod 87 is loosened, the third spring 86 releases the elastic force, and drives the retaining ring 85 to reset. The retaining ring 85 is inserted into the limit groove on the surface of the mounting rod 84. During the extension and retraction process of the equipment, the scraping block 83 can be used for scraping, which reduces the phenomenon that the surface of the equipment is contaminated with particles and dust during the extension and retraction process and affects the contraction, and reduces the situation that the equipment is easily stuck and scratched when it is contracted, thereby improving the overall practicality of the equipment. By setting the spraying device 9, when the equipment needs to be used, the conveying pipe 93 is used to The water pipe 92 is used for water supply treatment. The water pipe 92 can deliver water to the spray rack 1 94 and the spray rack 2 95. The nozzle 1 96 cooperates with the nozzle 2 97 to spray. The nozzle 1 96 can spray the particles contaminated by the extended part of the equipment. The nozzle 2 97 can clean the scraping block 83. By setting the spraying device 9, it is convenient for the auxiliary equipment to scrape, which can effectively reduce the phenomenon that the equipment is easily damaged when scraping particles for a long time, and reduce the situation where the equipment is damaged and affects the scraping effect, thereby improving the overall stability of the equipment.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotating and telescopic structure of a roadheader, characterized in that: It comprises a connecting frame (1), a sleeve (2) is arranged on the surface of the connecting frame (1), a moving cylinder (3) is slidably connected to the inner wall of the sleeve (2), a reducer (4) is arranged at one end of the moving cylinder (3), a working head (5) is arranged at one end of the reducer (4), cylinder one (6) is arranged on both sides of the sleeve (2), the output end of the cylinder one (6) is arranged on the surface of the moving cylinder (3), two cylinders two (10) are arranged on the surface of the connecting frame (1), and the output end of the cylinder two (10) is arranged on the surface of the sleeve (2); The surface of the cylinder (6) is provided with a protective device (7), and the protective device (7) comprises a telescopic sleeve (71), and the telescopic sleeve (71) is arranged on one side of the cylinder (6). A positioning ring (73) is fixedly connected to the surface of the cylinder (6), and a slot is provided on the surface of the positioning ring (73). An insert ring (72) is fixedly connected to the side of the telescopic sleeve (71) close to the positioning ring (73), and the insert ring (72) is clamped with the inner wall of the slot. A hole (1) is provided on the surface of the positioning ring (73), and an insert rod (74) is slidably connected to the inner wall of the hole (1). A second hole is provided on the surface of the insert ring (72), the insert rod (74) is engaged with the inner wall of the second hole, one end of the telescopic sleeve (71) is fixedly connected with two fixing blocks (710), a third hole is provided on the surface of the fixing block (710), a push rod (78) is slidably connected to the inner wall of the third hole, one end of the push rod (78) is fixedly connected with a clamping rod (77), and two blocking rods (76) are fixedly connected to the surface of one side of the movable cylinder (3) close to the clamping rod (77), a groove is provided on the surface of the blocking rod (76), and the clamping rod (77) is engaged with the inner wall of the groove; A scraping device (8) is provided on a side of the sleeve (2) close to the moving cylinder (3), and the scraping device (8) comprises a fixing ring (81). There are two fixing rings (81), and the two fixing rings (81) are arranged on one side of the sleeve (2). A scraping block (83) is fixedly connected to the surface of the fixing ring (81), and two hollow blocks (82) are fixedly connected to the surface of the fixing ring (81). A mounting rod (84) is fixedly connected to a side of the sleeve (2) close to the hollow blocks (82), and the mounting rod (84) is clamped with the inner wall of the hollow block (82). A sliding groove is provided on the inner wall of the sliding groove, and a retaining ring (85) is slidably connected to the inner wall of the retaining groove. A limiting groove is provided on the surface of the mounting rod (84), and the retaining ring (85) is clamped with the inner wall of the limiting groove.

2. The rotating and telescopic structure of a tunnel boring machine according to claim 1, characterized in that: The longitudinal section of the blocking rod (76) is in an inverted L-shape, and the groove on the surface of the blocking rod (76) is rectangular.

3. The rotating and telescopic structure of a tunnel boring machine according to claim 2, characterized in that: A second spring (79) is sleeved on the surface of the push rod (78), and two ends of the second spring (79) are respectively fixedly connected to the surfaces of the push rod (78) and the fixed block (710).

4. The rotating and telescopic structure of a tunnel boring machine according to claim 1, characterized in that: A first spring (75) is sleeved on the surface of the insertion rod (74), and two ends of the first spring (75) are respectively fixedly connected to the surfaces of the insertion rod (74) and the positioning ring (73).

5. The rotating and telescopic structure of a tunnel boring machine according to claim 1, characterized in that: A third spring (86) is fixedly connected to one side of the retaining ring (85) corresponding to the surface of the fixing ring (81), and there are two third springs (86).

6. The rotating and telescopic structure of a tunnel boring machine according to claim 1, characterized in that: A control rod (87) is fixedly connected to one side surface of the retaining ring (85), and the control rod (87) is cylindrical.

7. The rotating and telescopic structure of a tunnel boring machine according to claim 1, characterized in that: A spraying device (9) is provided on the surface of the sleeve (2), and the spraying device (9) comprises a fixing seat (91), a water pipe (92) is fixedly connected to the surface of the fixing seat (91), one end of the water pipe (92) is fixedly connected to a delivery pipe (93), a spraying frame (94) is fixedly connected to the surface of the water pipe (92), and a plurality of spray heads (96) arranged at equal intervals are fixedly connected to the surface of the spraying frame (94).

8. The rotating and telescopic structure of a tunnel boring machine according to claim 7, characterized in that: A second spraying frame (95) is arranged on the surface of the water pipe (92), and a plurality of second spraying heads (97) arranged at equal intervals are fixedly connected to the surface of the second spraying frame (95).

9. The rotating and telescopic structure of a roadheader according to claim 8, characterized in that: The longitudinal sections of the spray frame 1 (94) and the spray frame 2 (95) are arranged in an arc shape, and the spray head 2 (97) on the surface of the spray frame 2 (95) is arranged in an inclined manner to clean the scraping block (83).

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