Hydraulic dredging bucket connecting structure

Abstract

The invention relates to the technical field of excavators, and discloses a hydraulic dredging bucket connecting structure which comprises an excavating arm mechanism, an excavating mechanism is movably mounted at the free end of the excavating arm mechanism, a bucket body is movably mounted at one end of a small arm body, a bucket suspension mechanism is arranged in the excavating arm mechanism, and the bucket suspension mechanism is movably mounted at the other end of the small arm body. A butt joint mechanism is arranged between the digging arm mechanism and the digging mechanism. According to the hydraulic dredging bucket connecting structure, the lifting seat and the excavating mechanism can be connected in advance through the lifting sling, stable lifting and centering adjustment are conducted through the vertically-arranged bucket suspension mechanism, and therefore connection of a first positioning point is achieved; convenient manual pre-butt joint of a second positioning point is achieved by means of a movable hanging lug of the excavating mechanism and the excavating arm mechanism, finally, the excavating arm mechanism pushes the movable hanging lug to reset along a preset path to achieve positioning of the second positioning point, and final connection is completed through the butt joint mechanism. Therefore, the proficiency operation requirement on accurate positioning of the digging arm mechanism is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, specifically to a hydraulic dredging bucket connection structure. Background Technology

[0002] A bucket refers to the bucket installed on an excavator, also called a digging bucket. According to the working method, it is divided into backhoe buckets and front shovel buckets, with backhoe buckets being the most commonly used.

[0003] Currently, during most excavator bucket replacement operations, operators are required to precisely insert the boom into the connection part at the tail of the bucket and ensure that the pin holes of both are fully aligned before subsequent connection and fixing can be carried out. Due to the large weight of the bucket itself, it is difficult to adjust its position to achieve a smooth docking if the alignment is not accurate, which places high demands on the operator's technical proficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a hydraulic dredging bucket connection structure, which solves the problems mentioned in the background.

[0005] This invention provides the following technical solution: a hydraulic dredging bucket connection structure, comprising: a dredging arm mechanism, wherein a digging mechanism is movably mounted on the free end of the dredging arm mechanism; the dredging arm mechanism includes a forearm body; the digging mechanism includes a bucket body; the bucket body is movably mounted on one end of the forearm body; a bucket suspension mechanism is provided inside the dredging arm mechanism; a docking mechanism is provided between the dredging arm mechanism and the digging mechanism; the digging mechanism further includes a fixed-rotation lug, a push-pull lug, a hollow rotating shaft, and a movable lug; the fixed-rotation lug and the push-pull lug are integrally disposed on the surface of the bucket body; the hollow rotating shaft is rotatably connected to the inside of the fixed-rotation lug via a bearing; the movable lug is fixedly sleeved on the surface of the hollow rotating shaft; and the bucket is suspended... The mechanism includes a driven shaft, a winch, a lifting sling, a lifting base, a suspension shaft, a movable pulley, a lifting motor, a fixed sealing plate, a positioning head, and a movable sealing plate. The driven shaft is rotatably connected to the inside of the boom body via bearings. The winch is fixedly sleeved on the surface of the driven shaft. The lifting sling is wound around the surface of the winch, and one end of the lifting sling is fixedly connected to the surface of the winch. The lifting base is located at one end of the boom body. The suspension shaft is rotatably connected to the inside of the lifting base via bearings. The movable pulley is fixedly sleeved on the surface of the lifting base. The lifting motor is fixedly installed inside the boom body. The fixed sealing plate is fixedly connected to the inner wall of one end of the boom body. The positioning head is fixedly inserted into one side of the fixed sealing plate. The movable sealing plate is fixedly connected to the inside of the lifting base.

[0006] Preferably, the boom mechanism further includes a partition plate, an insert cylinder, a first support shaft, a side cover, a support connecting rod, a second support shaft, a hydraulic cylinder, and a push-pull connecting rod. The partition plate is fixedly connected inside the boom body, the insert cylinder is fixedly inserted into the boom body, the first support shaft is rotatably connected inside the boom body via bearings, the side cover is fixedly connected to both sides of the boom body via fixing screws, the support connecting rods are fixedly sleeved at both ends of the first support shaft, the second support shaft is fixedly connected between the two second support shafts, the hydraulic cylinder is rotatably connected between the boom body and the second support shafts, and the push-pull connecting rod is rotatably connected to the surface of the second support shaft via bearings.

[0007] Preferably, the excavation mechanism further includes a funnel, a connecting column, a pre-connection hole, and a locking hole. The funnel is fixedly connected to one side of the bucket body, the connecting column is fixedly connected between two movable lugs, and the pre-connection hole and the locking hole are both opened through the surface of the movable lugs. When the movable lugs are connected, the locking hole is coaxial with the push-pull lug.

[0008] Preferably, the bucket suspension mechanism further includes an inner support shaft, a support pulley, and a connecting cable end sleeve. The inner support shaft is rotatably connected to the inside of the boom body via a bearing. The support pulley is fixedly sleeved on the surface of the inner support shaft, and the surface of the support pulley is in rolling connection with the surface of the lifting cable. The connecting cable end sleeve is fixedly connected to the end of the lifting cable away from the winch, and the surface of the connecting cable end sleeve is fixedly connected to the inner wall of the partition plate. The surface of the lifting cable is in rolling connection with the surface of the movable pulley.

[0009] Preferably, the bucket suspension mechanism further includes a locking frame and a first fixing bolt. The locking frame is rotatably connected to both ends of the suspension shaft via bearings. The first fixing bolt is fixedly installed between the locking frame and the boom body, and the surface of the first fixing bolt is slidably connected to the inner wall of the insert cylinder.

[0010] Preferably, the bucket suspension mechanism further includes a drive shaft, a drive sprocket, a worm gear, a driven sprocket, and a chain. The drive shaft is rotatably connected to the inside of the boom body via bearings. The drive sprockets are fixedly sleeved at both ends of the drive shaft. The worm gear is fixedly sleeved on the surface of the drive shaft. The worm gear is fixedly connected to the actual output end of the crane motor via a coupling, and one end of the worm gear is rotatably connected to the inner wall of the isolation plate via a bearing. The worm gear meshes with the worm gear. The driven sprockets are fixedly sleeved at both ends of the driven shaft. The chain is installed between the drive sprocket and the driven sprocket, and the chain, drive sprocket, and driven sprocket are all located inside the side cover.

[0011] Preferably, the bucket suspension mechanism further includes a first slip ring, a second slip ring, a positioning insert ring, and a sealing ring. The first slip ring is fixedly inserted into the interior of the fixed sealing plate, the second slip ring is fixedly inserted into the interior of the movable sealing plate, and the positioning insert ring is fixedly inserted into the interior of the movable sealing plate. When the lifting seat is docked, the surface of the positioning head is slidably connected to the inner wall of the positioning insert ring.

[0012] Preferably, the docking mechanism includes a pin, a pin sleeve, and a second bolt. There are three pins, and the three pins are respectively movably inserted into the interior of the hollow rotating shaft, the interior of the pre-connection hole, and the interior of the locking hole. The pin sleeve is fixedly sleeved on both ends of the three pins by the second bolt.

[0013] Preferably, the docking mechanism further includes a safety frame and an end tube. The safety frame is movably sleeved on the surface of the three pin ends, and there are two safety frames, which are distributed opposite to each other. The end tube is integrally disposed on one side of the safety frame.

[0014] Preferably, the docking mechanism further includes a third bolt, a protective sleeve, and a sealing ring. The third bolt is fixedly installed between the two safety brackets and the two movable lugs. The protective sleeve is movably sleeved on the surface of the third bolt, and the sealing ring is fixedly connected to both ends of the protective sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This hydraulic dredging bucket connection structure, through its set up boom mechanism, digging mechanism, bucket suspension mechanism, and docking mechanism, can pre-connect the lifting base to the digging mechanism via lifting slings. The vertically arranged bucket suspension mechanism then smoothly lifts and centers the bucket, thus achieving the connection of the first positioning point. Subsequently, the digging mechanism's own movable lugs and the boom mechanism achieve convenient manual pre-docking of the second positioning point. Finally, the boom mechanism pushes the movable lugs along a predetermined path to reset the second positioning point, and the docking mechanism completes the final connection. This effectively reduces the skill requirements for precise positioning of the boom mechanism.

[0016] This hydraulic dredging bucket connection structure, through the setting of the boom body, isolation plate, insert cylinder, first support shaft, side cover, support connecting rod, second support shaft, hydraulic cylinder and push-pull connecting rod, can use the isolation plate to ensure the end of the lifting sling is fixed during use, and use the side cover to facilitate the protection of the drive sprocket, driven sprocket and chain. At the same time, the fixing screws can be used to fix the chain at any time without disassembling the boom body.

[0017] This hydraulic dredging bucket connection structure, through the bucket body, fixed rotation lug, push-pull lug, hollow rotating shaft, movable lug, funnel, connecting column, pre-connection hole, and locking hole, allows for pre-connection of the movable lug and the movable push-pull connecting rod when connecting to the second positioning point. The limit formed after the two are connected ensures the subsequent connection guidance, thereby reducing the technical proficiency requirements of the operator.

[0018] This hydraulic dredging bucket connection structure, through its driven shaft, winch, lifting sling, lifting base, suspension shaft, movable pulley, lifting motor, fixed sealing plate, positioning head, movable sealing plate, inner support shaft, support fixed pulley, connecting cable end sleeve, locking frame, first fixing bolt, drive shaft, drive sprocket, worm gear, worm shaft, driven sprocket, chain, first slip ring, second slip ring, positioning insert ring, and sealing ring, enables positioning during docking by lifting with the lifting sling. This avoids the need for operators to precisely insert the dredging arm into the bucket tail, further reducing the skill requirements for operators.

[0019] This hydraulic dredging bucket connection structure, through the setting of pins, pin sleeves, second bolts, safety brackets, end sleeves, third bolts, protective sleeves, and sealing rings, enables the docking of the arm mechanism, digging mechanism, and bucket suspension mechanism via pins during use, and provides further security and fixation through the safety bracket, thereby improving the stability and safety of the device after connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the excavation mechanism of the present invention during lifting. Figure 3 This is a schematic diagram of the structure at the location of the excavation mechanism of the present invention; Figure 4 This is a schematic diagram of the exploded structure at the location of the excavation mechanism of the present invention; Figure 5 This is a schematic diagram of the excavation mechanism structure of the present invention; Figure 6 This is a schematic diagram of the structure at the location of the safety frame in this invention; Figure 7 This is a schematic diagram of the structure at the pin position of the present invention; Figure 8 This is a schematic diagram of the structure at the location of the hanging bracket of the present invention; Figure 9 This is a cross-sectional view of the location of the suspension seat in this invention; Figure 10 This is a cross-sectional view of the location of the excavator arm mechanism of the present invention; Figure 11 This is a schematic diagram of the structure at the location of the bucket suspension mechanism of the present invention; Figure 12For the present invention Figure 11 Enlarged structural diagram at point A in the middle; Figure 13 This is a schematic diagram of the exploded structure at the positions of the fixed sealing plate and the dynamic sealing plate of the present invention.

[0021] In the picture: 101. Boom body; 102. Isolation plate; 103. Insertion tube; 104. First support shaft; 105. Side cover; 106. Support connecting rod; 107. Second support shaft; 108. Hydraulic cylinder; 109. Push-pull connecting rod; 201. Bucket body; 202. Fixed rotation lug; 203. Push-pull lug; 204. Hollow rotating shaft; 205. Moving lug; 206. Hoist; 207. Connecting column; 208. Pre-connection hole; 209. Locking hole; 301. Driven shaft; 302. Winch sheave; 303. Lifting sling; 304. Lifting seat; 305. Suspension shaft; 306. Moving pulley; 307. Lifting motor; 30 8. Fixed sealing plate; 309. Positioning head; 310. Moving sealing plate; 311. Inner support shaft; 312. Supporting fixed pulley; 313. Connecting cable end sleeve; 314. Locking frame; 315. First fixing bolt; 316. Drive shaft; 317. Drive sprocket; 318. Turbine; 319. Worm gear; 320. Driven sprocket; 321. Chain; 322. First slip ring; 323. Second slip ring; 324. Positioning insert ring; 325. Sealing ring; 401. Pin shaft; 402. Pin sleeve; 403. Second bolt; 404. Safety frame; 405. End tube; 406. Third bolt; 407. Protective tube; 408. Sealing ring. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-13A hydraulic dredging bucket connection structure includes: a boom mechanism, a digging mechanism movably mounted on the free end of the boom mechanism, the boom mechanism including a boom body 101, the digging mechanism including a bucket body 201, the bucket body 201 movably mounted on one end of the boom body 101, a bucket suspension mechanism internally provided in the boom mechanism, a docking mechanism provided between the boom mechanism and the digging mechanism, and the digging mechanism further including a fixed rotation lug 202, a push-pull lug 203, a hollow rotating shaft 204, and a movable lug 205, the fixed rotation lug 202 and the push-pull lug 203 being integrally mounted on the bucket body 201. On the surface of 01, the hollow rotating shaft 204 is rotatably connected to the inside of the fixed rotating lug 202 via bearings, and the movable lug 205 is fixedly sleeved on the surface of the hollow rotating shaft 204. The bucket suspension mechanism includes a driven shaft 301, a winch 302, a lifting sling 303, a lifting seat 304, a suspension shaft 305, a movable pulley 306, a lifting motor 307, a fixed sealing plate 308, a positioning head 309, and a movable sealing plate 310. The driven shaft 301 is rotatably connected to the inside of the boom body 101 via bearings, the winch 302 is fixedly sleeved on the surface of the driven shaft 301, and the lifting sling 303 is wound around the winch. The surface of the winch 302 is fixedly connected, and one end of the lifting sling 303 is fixedly connected to the surface of the winch 302. The lifting base 304 is located at one end of the boom body 101. The suspension shaft 305 is rotatably connected to the inside of the lifting base 304 through a bearing. The movable pulley 306 is fixedly sleeved on the surface of the lifting base 304. The lifting motor 307 is fixedly installed inside the boom body 101. The fixed sealing plate 308 is fixedly connected to the inner wall of one end of the boom body 101. The positioning head 309 is fixedly inserted into one side of the fixed sealing plate 308. The movable sealing plate 310 is fixedly connected to the inside of the lifting base 304. Through the set excavator arm mechanism, the excavator... The excavating mechanism, bucket suspension mechanism, and docking mechanism can pre-connect the lifting seat 304 to the excavating mechanism via the lifting sling 303. The vertically arranged bucket suspension mechanism is used to smoothly lift and center the bucket, thereby achieving the connection of the first positioning point. Subsequently, the moving lug 205 of the excavating mechanism is used to achieve convenient manual pre-docking with the boom mechanism to achieve the second positioning point. Finally, the boom mechanism pushes the moving lug 205 to reset along a predetermined path to achieve the positioning of the second positioning point, and the final connection is completed through the docking mechanism. This effectively reduces the skill requirements for precise positioning of the boom mechanism.

[0024] The excavator boom mechanism also includes a partition plate 102, an insert cylinder 103, a first support shaft 104, a side cover 105, a support connecting rod 106, a second support shaft 107, a hydraulic cylinder 108, and a push-pull connecting rod 109. The partition plate 102 is fixedly connected inside the boom body 101, the insert cylinder 103 is fixedly inserted into the boom body 101, the first support shaft 104 is rotatably connected to the boom body 101 via bearings, the side cover 105 is fixedly connected to both sides of the boom body 101 via fixing screws, the support connecting rod 106 is fixedly sleeved at both ends of the first support shaft 104, the second support shaft 107 is fixedly connected between the two second support shafts 107, and the hydraulic cylinder 108 rotatably connects the boom body 101 to the boom body 101. Connected between the forearm body 101 and the second support shaft 107, the push-pull linkage 109 is rotatably connected to the surface of the second support shaft 107 via bearings. Through the forearm body 101, isolation plate 102, insertion cylinder 103, first support shaft 104, side cover 105, support linkage 106, second support shaft 107, hydraulic cylinder 108 and push-pull linkage 109, the isolation plate 102 can ensure the end of the lifting sling 303 is fixed during use, and the side cover 105 can facilitate the protection of the drive sprocket 317, driven sprocket 320 and chain 321. At the same time, the chain 321 can be easily maintained without disassembling the forearm body 101 by fixing with screws.

[0025] The excavation mechanism also includes a funnel 206, a connecting column 207, a pre-connection hole 208, and a locking hole 209. The funnel 206 is fixedly connected to one side of the bucket body 201, and the connecting column 207 is fixedly connected between two movable lugs 205. The pre-connection hole 208 and the locking hole 209 are both opened through the surface of the movable lugs 205. When the movable lugs 205 are connected, the locking hole 209 is coaxial with the push-pull lug 203. Through the bucket body 201, the fixed-rotation lug 202, the push-pull lug 203, the hollow rotating shaft 204, the movable lugs 205, the funnel 206, the connecting column 207, the pre-connection hole 208, and the locking hole 209, when connecting to the second positioning point, the movable lugs 205 and the movable push-pull connecting rod 109 can be pre-connected together, and the limit formed after the two are connected ensures the subsequent connection guidance, thereby reducing the technical proficiency requirements of the operators.

[0026] The bucket suspension mechanism also includes an inner support shaft 311, a support pulley 312, and a connecting cable end sleeve 313. The inner support shaft 311 is rotatably connected to the inside of the boom body 101 via a bearing. The support pulley 312 is fixedly sleeved on the surface of the inner support shaft 311, and the surface of the support pulley 312 is in rolling connection with the surface of the lifting cable 303. The connecting cable end sleeve 313 is fixedly connected to the end of the lifting cable 303 away from the winch 302, and the surface of the connecting cable end sleeve 313 is fixedly connected to the inner wall of the isolation plate 102. The surface of the lifting cable 303 is in rolling connection with the surface of the movable pulley 306.

[0027] The bucket suspension mechanism also includes a locking frame 314 and a first fixing bolt 315. The locking frame 314 is rotatably connected to both ends of the suspension shaft 305 via bearings. The first fixing bolt 315 is fixedly installed between the locking frame 314 and the boom body 101, and the surface of the first fixing bolt 315 is slidably connected to the inner wall of the insert cylinder 103.

[0028] The bucket suspension mechanism includes a drive shaft 316, a drive sprocket 317, a worm gear 318, a worm 319, a driven sprocket 320, and a chain 321. The drive shaft 316 is rotatably connected to the inside of the boom body 101 via bearings. The drive sprocket 317 is fixedly sleeved at both ends of the drive shaft 316. The worm gear 318 is fixedly sleeved on the surface of the drive shaft 316. The worm gear 319 is fixedly connected to the actual output end of the hoisting motor 307 via a coupling. One end of the worm gear 319 is rotatably connected to the inner wall of the isolation plate 102 via a bearing. The worm gear 318 is meshed with the worm gear 319. The driven sprockets 320 are fixedly sleeved at both ends of the driven shaft 301. The chain 321 is installed between the drive sprocket 317 and the driven sprocket 320. The chain 321, drive sprocket 317, and driven sprocket 320 are all located inside the side cover 105.

[0029] The bucket suspension mechanism includes a first slip ring 322, a second slip ring 323, a positioning insert ring 324, and a sealing ring 325. The first slip ring 322 is fixedly inserted into the interior of the fixed sealing plate 308, the second slip ring 323 is fixedly inserted into the interior of the movable sealing plate 310, and the positioning insert ring 324 is fixedly inserted into the interior of the movable sealing plate 310. When the lifting seat 304 is engaged, the surface of the positioning head 309 slides in connection with the inner wall of the positioning insert ring 324. This is achieved through the driven shaft 301, winch 302, lifting sling 303, lifting seat 304, suspension shaft 305, movable pulley 306, lifting motor 307, and fixed sealing ring 325. The sealing plate 308, positioning head 309, moving sealing plate 310, inner support shaft 311, supporting fixed pulley 312, connecting cable end sleeve 313, locking frame 314, first fixing bolt 315, drive shaft 316, drive sprocket 317, turbine 318, worm gear 319, driven sprocket 320, chain 321, first slip ring 322, second slip ring 323, positioning insert ring 324, and sealing ring 325 can achieve positioning by lifting with lifting sling 303 during docking, avoiding the need for operators to precisely insert the excavator arm into the bucket tail, and further reducing the technical proficiency requirements for operators.

[0030] The docking mechanism includes a pin 401, a pin sleeve 402, and a second bolt 403. There are three pins 401, which are respectively movably inserted into the interior of the hollow rotating shaft 204, the interior of the pre-connection hole 208, and the interior of the locking hole 209. The pin sleeve 402 is fixedly sleeved at both ends of the three pins 401 by the second bolt 403.

[0031] The docking mechanism also includes a safety frame 404 and an end tube 405. The safety frame 404 is movably sleeved on the surface of the ends of the three pins 401, and there are two safety frames 404, which are distributed opposite to each other. The end tube 405 is integrally set on one side of the safety frame 404.

[0032] The docking mechanism also includes a third bolt 406, a protective sleeve 407, and a sealing ring 408. The third bolt 406 is fixedly installed between the two safety frames 404 and the two movable lugs 205. The protective sleeve 407 is movably sleeved on the surface of the third bolt 406. The sealing ring 408 is fixedly connected to both ends of the protective sleeve 407. Through the provided pin 401, pin sleeve 402, second bolt 403, safety frame 404, end sleeve 405, third bolt 406, protective sleeve 407, and sealing ring 408, the arm mechanism, digging mechanism, and bucket suspension mechanism can be docked through the pin 401 during use, and further secured by the safety frame 404, improving the stability and safety of the connected device.

[0033] Working principle: In use, first start the excavator and set the boom body 101 to a vertical state suspended from the ground. Then start the crane motor 307. The crane motor 307 drives the worm gear 319 to rotate. When the worm gear 319 rotates, it drives the turbine 318 to rotate. When the turbine 318 rotates, it drives the drive sprocket 317 to rotate through the drive shaft 316. The drive sprocket 317 drives the driven sprocket 320 to rotate through the chain 321, thereby driving the winch 302 on the surface of the driven shaft 301 to rotate. The rotation of the winch 302 unwinds the lifting sling 303 wound on its surface. When the lifting sling 303 is unwound, the lifting seat 304 is released. Then, the lifting seat 304 is inserted between the fixed and rotating lugs 202, and a pin 401 is inserted through the hollow rotating shaft 204. Then, the two ends of the pin 401 are sealed by the pin sleeve 402 and the second bolt 403, thereby connecting the lifting seat 304 with the bucket body 201 and realizing the pre-connection of the first positioning point. Then, the crane motor 307 is started to reverse, so that the lifting sling 303 is wound up. When the lifting sling 303 is wound up, the lifting seat 304 and the bucket body 201 are lifted. Since the boom body 101 is vertical, after the lifting seat 304 is lifted to the final position, the positioning head 309 will accurately insert into the positioning ring 324 until the sealing ring 325 is tightly attached to the sealing plate 308. Then the crane motor 307 is turned off, and then the locking frame 314 is flipped to the side of the boom body 101. Then the locking frame 314 is fixed to the boom body 101 by the first fixing bolt 315, thereby realizing the connection and fixation of the first positioning point. Then, the excavator is started to place the bucket body 201, which is fixed at the first positioning point, on the ground. The hydraulic cylinder 108 is activated to extend. After the hydraulic cylinder 108 extends one end, it will push the push-pull connecting rod 109 to extend. Then, another pin 401 is inserted between the pre-connection hole 208 and the push-pull connecting rod 109 to connect the freely rotatable push-pull connecting rod 109 and the freely rotatable movable lug 205 to achieve the pre-connection of the second positioning point. Then, the hydraulic cylinder 108 is activated, which pushes the push-pull connecting rod 109 to extend. When the push-pull connecting rod 109 extends, it will guide the passive lug 205 and simultaneously drive the movable lug 205 to rotate until the locking hole 209 of the movable lug 205 is concentric with the push-pull lug 203. Alternatively, the excavator can drive the bucket body 201 to reverse, so that the push-pull lug 203 is inserted between the movable lug 205 to achieve concentricity. Then, the third pin 401 is inserted into the locking hole 209 for fixation, thereby achieving the connection and fixation of the second positioning point. Then, the protective cylinder 407 is placed inside the two movable lugs 205, and the two safety brackets 404 are respectively fitted onto the two ends of the pin 401. Then, the two safety brackets 404 are fixed by passing the third bolt 406 through the protective cylinder 407.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic dredging bucket connection structure, comprising: A digging arm mechanism, wherein a digging mechanism is movably mounted on the free end of the digging arm mechanism, the digging arm mechanism includes a forearm body (101), the digging mechanism includes a bucket body (201), the bucket body (201) is movably mounted on one end of the forearm body (101), characterized in that a bucket suspension mechanism is provided inside the digging arm mechanism, and a docking mechanism is provided between the digging arm mechanism and the digging mechanism; The excavation mechanism also includes a fixed rotating lug (202), a push-pull lug (203), a hollow rotating shaft (204), and a movable lug (205). The fixed rotating lug (202) and the push-pull lug (203) are integrally set on the surface of the bucket body (201). The hollow rotating shaft (204) is rotatably connected to the inside of the fixed rotating lug (202) through a bearing. The movable lug (205) is fixedly sleeved on the surface of the hollow rotating shaft (204). The bucket suspension mechanism includes a driven shaft (301), a winch (302), a lifting sling (303), a lifting seat (304), a suspension shaft (305), a movable pulley (306), a lifting motor (307), a fixed sealing plate (308), a positioning head (309), and a movable sealing plate (310). The driven shaft (301) is rotatably connected to the boom body (101) through a bearing. Inside the boom body (101), the winch (302) is fixedly sleeved on the surface of the driven shaft (301), the lifting sling (303) is wound around the surface of the winch (302), and one end of the lifting sling (303) is fixedly connected to the surface of the winch (302). The lifting seat (304) is located at one end of the boom body (101). The suspension shaft (305) is rotatably connected to the inside of the lifting seat (304) through a bearing. The movable pulley (306) is fixedly sleeved on the surface of the lifting seat (304). The lifting motor (307) is fixedly installed inside the boom body (101). The fixed sealing plate (308) is fixedly connected to the inner wall of one end of the boom body (101). The positioning head (309) is fixedly inserted into one side of the fixed sealing plate (308). The movable sealing plate (310) is fixedly connected inside the lifting seat (304).

2. The hydraulic dredging bucket connection structure according to claim 1, characterized in that, The excavator arm mechanism further includes a partition plate (102), an insert cylinder (103), a first support shaft (104), a side cover (105), a support connecting rod (106), a second support shaft (107), a hydraulic cylinder (108), and a push-pull connecting rod (109). The partition plate (102) is fixedly connected inside the boom body (101), the insert cylinder (103) is fixedly inserted into the boom body (101), and the first support shaft (104) is rotatably connected to the boom body (101) via a bearing. Inside, the side cover (105) is fixedly connected to both sides of the forearm body (101) by fixing screws, the support rod (106) is fixedly sleeved at both ends of the first support shaft (104), the second support shaft (107) is fixedly connected between the two second support shafts (107), the hydraulic cylinder (108) is rotatably connected between the forearm body (101) and the second support shaft (107), and the push-pull rod (109) is rotatably connected to the surface of the second support shaft (107) through bearings.

3. The hydraulic dredging bucket connection structure according to claim 1, characterized in that, The excavation mechanism also includes a funnel (206), a connecting post (207), a pre-connection hole (208), and a locking hole (209). The funnel (206) is fixedly connected to one side of the bucket body (201), and the connecting post (207) is fixedly connected between two movable lugs (205). The pre-connection hole (208) and the locking hole (209) are both opened through the surface of the movable lugs (205). When the movable lugs (205) are connected, the locking hole (209) is coaxial with the push-pull lug (203).

4. The hydraulic dredging bucket connection structure according to claim 1, characterized in that, The bucket suspension mechanism also includes an inner support shaft (311), a support pulley (312), and a connecting cable end sleeve (313). The inner support shaft (311) is rotatably connected to the inside of the boom body (101) via a bearing. The support pulley (312) is fixedly sleeved on the surface of the inner support shaft (311), and the surface of the support pulley (312) is in rolling connection with the surface of the lifting cable (303). The connecting cable end sleeve (313) is fixedly connected to the end of the lifting cable (303) away from the winch (302), and the surface of the connecting cable end sleeve (313) is fixedly connected to the inner wall of the isolation plate (102), and the surface of the lifting cable (303) is in rolling connection with the surface of the movable pulley (306).

5. The hydraulic dredging bucket connection structure according to claim 4, characterized in that, The bucket suspension mechanism also includes a locking frame (314) and a first fixing bolt (315). The locking frame (314) is rotatably connected to both ends of the suspension shaft (305) via bearings. The first fixing bolt (315) is fixedly installed between the locking frame (314) and the boom body (101), and the surface of the first fixing bolt (315) is slidably connected to the inner wall of the insert cylinder (103).

6. The hydraulic dredging bucket connection structure according to claim 5, characterized in that, The bucket suspension mechanism also includes a drive shaft (316), a drive sprocket (317), a worm gear (318), a worm (319), a driven sprocket (320), and a chain (321). The drive shaft (316) is rotatably connected to the inside of the boom body (101) via bearings. The drive sprockets (317) are respectively fixedly sleeved on both ends of the drive shaft (316). The worm gear (318) is fixedly sleeved on the surface of the drive shaft (316). The worm gear (319) is fixedly connected to the lifting arm via a coupling. The actual output end of the motor (307) and one end of the worm (319) are rotatably connected to the inner wall of the isolation plate (102) through a bearing, and the worm (318) is meshed with the worm (319). The driven sprockets (320) are respectively fixedly sleeved on both ends of the driven shaft (301). The chain (321) is installed between the driving sprocket (317) and the driven sprocket (320), and the chain (321), driving sprocket (317) and driven sprocket (320) are all located inside the side cover (105).

7. The hydraulic dredging bucket connection structure according to claim 6, characterized in that, The bucket suspension mechanism also includes a first slip ring (322), a second slip ring (323), a positioning insert ring (324), and a sealing ring (325). The first slip ring (322) is fixedly inserted into the interior of the fixed sealing plate (308), the second slip ring (323) is fixedly inserted into the interior of the movable sealing plate (310), and the positioning insert ring (324) is fixedly inserted into the interior of the movable sealing plate (310). When the lifting seat (304) is docked, the surface of the positioning head (309) is slidably connected to the inner wall of the positioning insert ring (324).

8. The hydraulic dredging bucket connection structure according to claim 3, characterized in that, The docking mechanism includes a pin (401), a pin sleeve (402), and a second bolt (403). There are three pins (401), and the three pins (401) are respectively movably inserted into the interior of the hollow rotating shaft (204), the interior of the pre-connection hole (208), and the interior of the locking hole (209). The pin sleeve (402) is fixedly sleeved at both ends of the three pins (401) by the second bolt (403).

9. The hydraulic dredging bucket connection structure according to claim 8, characterized in that, The docking mechanism also includes a safety frame (404) and an end tube (405). The safety frame (404) is movably sleeved on the surface of the ends of the three pins (401), and there are two safety frames (404) with the two safety frames (404) distributed opposite to each other. The end tube (405) is integrally disposed on one side of the safety frame (404).

10. A hydraulic dredging bucket connection structure according to claim 9, characterized in that, The docking mechanism also includes a third bolt (406), a protective sleeve (407), and a sealing ring (408). The third bolt (406) is fixedly installed between the two safety brackets (404) and the two movable lugs (205). The protective sleeve (407) is movably sleeved on the surface of the third bolt (406). The sealing ring (408) is fixedly connected to both ends of the protective sleeve (407).

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