Intelligent automatic bridge type grab bucket crane

Abstract

The invention relates to the technical field of crane control, and particularly discloses an intelligent automatic bridge type grab crane. A carrying plate is connected with a lifting assembly through a steel wire rope II, and a tension sensor for detecting the pulled weight is arranged on a steel wire rope I; a first rotating plate and a second rotating plate which are matched with the first grab bucket and the second grab bucket respectively are rotationally arranged on the carrying plate, scraping assemblies are arranged on the first grab bucket and the second grab bucket respectively, a second sensor is arranged at the upper end of the first grab bucket, and when the first grab bucket and the second grab bucket are opened and the first rotating plate corresponds to the second sensor, scraping assemblies are arranged on the scraping assemblies. The scraping assembly can clean the buckling faces of the first grab bucket and the second grab bucket, the first rotating plate and the second rotating plate, and along with continuous opening of the first grab bucket and the second grab bucket, the first rotating plate and the second rotating plate can rotate upwards at the same time. And a first sensor is arranged at the lower end of the carrying plate and used for detecting the height from the carrying plate to the ground when the first grab bucket and the second grab bucket are completely opened.

Description

Technical Field

[0001] The invention relates to the technical field of crane control, and in particular to an intelligent automated bridge grab crane. Background Art

[0002] Grab cranes are widely used in ports and docks, mainly for loading and unloading bulk cargoes such as coal, ore, sand, grain, etc. Their powerful grabbing ability and high operating efficiency can greatly improve the throughput and operating efficiency of ports.

[0003] The Chinese patent with the announcement number CN115724344B discloses a weighing device for a garbage grab crane, including a bridge crane, a balance seat for accelerating stability is provided below the bridge crane, and a steel wire rope for moving up and down is provided between the bridge crane and the balance seat, a water inlet pipe communicating with the inner cavity of the balance seat is provided in the middle of the upper end of the balance seat, the interior of the balance seat is filled with water, and the balance seat is provided with a moving groove in the middle of the inner side wall except the inner cavity top wall and the inner cavity bottom wall, and the inside of the four moving grooves is provided with A movable plate, a sealing pad is provided at one end of the four movable plates that are close to each other, a spring is commonly provided between one end of the four movable plates that are far away from each other and the inner side wall of the movable groove, connecting columns are provided at the four corners of the bottom of the balancing seat, and a weighing seat is commonly provided at the lower part of the four connecting columns, and a sponge pad, a U-shaped floor scale and a support plate located therebetween are provided in the inner cavity of the weighing seat, a transfer column is provided in the middle part of the lower end of the support plate, the lower end of the transfer column passes through the bottom wall of the weighing seat and is provided with a control mechanism, and a grab body is provided at the lower part of the control mechanism.

[0004] In the above technical solution, by setting structures such as connecting blocks, connecting columns and metal rods, the water source in the balance seat can flow normally in the balance seat in the first stage. By setting grooves and nozzles, the movable plate and the sealing gasket will be pushed into the groove by the grinding rod in the second stage, thereby connecting with the inner cavity of the balance seat, so that water can be sprinkled along the drainage groove and the nozzle to the grab body for preliminary cleaning. However, this method requires the use of additional water resources, is relatively cumbersome to operate, and it is difficult to use the characteristics of the grab itself to achieve cleaning, and it is difficult to avoid the collision of the grab with the ground. Summary of the invention

[0005] The present invention provides an intelligent automatic bridge grab bucket crane, aiming to solve the problems in the related art that it is difficult to avoid collision between the grab bucket and the ground and it is difficult to clean the grab bucket conveniently.

[0006] An intelligent automatic bridge grab crane comprises a movable main beam, a lifting assembly arranged on the main beam and capable of moving, and a grab assembly arranged below the lifting assembly, wherein the grab assembly comprises a base frame connected to the lifting assembly through a steel wire rope 1, a carrier plate slidably connected to the base frame, and grab buckets 1 and 2 rotatably arranged on the carrier plate, wherein the grab buckets 1 and 2 are respectively connected to the base frame through connecting arms, the carrier plate is connected to the lifting assembly through a steel wire rope 2, a tension sensor for detecting the pulled weight is arranged on the steel wire rope 1, and a load cell rotatably arranged on the carrier plate for connecting the grab buckets 1 and 2 respectively. The two rotating plates are matched with each other, and the rotating plate 1 and the rotating plate 2 can rotate simultaneously when the rotating plate 1 rotates. The grab buckets 1 and the grab buckets 2 are respectively provided with scraping components, and the upper end of the grab bucket 1 is provided with a sensor 2. When the grab buckets 1 and the grab buckets 2 are opened and the rotating plate 1 corresponds to the sensor 2, the scraping component can clean the fitting surfaces of the grab buckets 1 and the grab buckets 2 and the rotating plate 1 and the rotating plate 2. As the grab buckets 1 and the grab buckets 2 continue to open, the rotating plate 1 and the rotating plate 2 can rotate upward simultaneously; the lower end of the carrier plate is provided with a sensor 1, and the sensor 1 is used to detect the height of the carrier plate from the ground when the grab buckets 1 and the grab buckets 2 are fully opened.

[0007] Preferably, an axle is fixedly provided on the carrier plate, and rotating plate one and rotating plate two are respectively connected to the axle for rotation, rotating plate one is provided with rod one slidingly through elastic member one, grab bucket two is provided with a push rod cooperating with rod one, and when rod one and push rod abut against each other, rotating plate one and rotating plate two can rotate upward at the same time.

[0008] Preferably, the rotating plate 1 has a ring 1 which is rotatably matched with the shaft rod, the rotating plate 2 has a ring 2 which is rotatably matched with the shaft rod, the ring 2 is connected to the shaft rod through the elastic member 2, and the ring 1 is matched with the ring 2 through a gear assembly.

[0009] Preferably, the gear assembly includes bevel gear one coaxially fixedly connected to ring one, bevel gear two coaxially fixedly connected to ring two, and bevel gear three rotatably connected to the carrier plate, and bevel gear three is meshed with bevel gear one and bevel gear two at the same time.

[0010] Preferably, a sliding hole cooperating with the rod one is provided in the carrier plate along the extension direction of the shaft rod, and the rod two is slidably provided in the sliding hole through the elastic member three.

[0011] Preferably, the end of the rod one close to the sliding hole has an arc-shaped portion one, the end of the rod two away from the rod one has an arc-shaped portion two, and the top rod has a guiding surface and a retaining surface that cooperate with the arc-shaped portion two.

[0012] Preferably, the scraping assembly includes a slide seat slidably connected to the grab bucket, a driving member for controlling the movement of the slide seat, and a scraper plate connected to the slide seat via an elastic member 4, wherein the scraper plate is used to scrape the material on the engaging surface of the grab bucket.

[0013] Preferably, a shaking piece is provided on the grab bucket 1 and slides through an elastic piece 5 in a direction perpendicular to the movement of the slide seat, the shaking piece includes a matching rod and a connecting rod, a rocker arm is provided on the slide seat and rotates through an elastic piece 6, and a stopper that cooperates with the rocker arm is fixed on the slide seat.

[0014] Preferably, when the slide moves downward, the rocker arm abuts against the block, and the rocker arm can abut against the connecting rod, so that the matching rod and scraper 1 are disengaged from the abutment; when the slide moves upward, the rocker arm disengages from the abutment with the block, and the connecting rod abuts against the rocker arm, so that the matching rod extends out of the locking surface of the grab bucket 1.

[0015] Preferably, the rotating plate 1 can contact the inner wall of the grab bucket 1 when it rotates, and the grab bucket 1 has a baffle 1 that cooperates with the rotating plate 1. The rotating plate 2 can contact the inner wall of the grab bucket 2 when it rotates, and the grab bucket 2 has a baffle 2 that cooperates with the rotating plate 2.

[0016] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: when grab bucket 1 and grab bucket 2 are grabbing materials, wire rope 1 and wire rope 2 are remotely controlled to make the carrier plate move downward relative to the base frame, grab bucket 1 and grab bucket 2 are gradually opened, rotating plate 1 scrapes the residual material on the inner wall of grab bucket 1, and rotating plate 2 scrapes the residual material on the inner wall of grab bucket 2. When the side surface of rotating plate 1 is flush with the buckling surface of grab bucket 1, the side surface of rotating plate 2 is flush with the buckling surface of grab bucket 2. At this time, rotating plate 1 corresponds to sensor 2, and sensor 2 feeds back the signal to the remote control system to make scraper 2 and scraper 1 move downward in sequence, so that the side surface of rotating plate 1 and grab bucket 1 can be adjusted. The residual materials on the engaging surface of the rotating plate two, the side surface of the rotating plate two and the engaging surface of the grab bucket two are scraped off, and then the scraper two and the scraper one move upward and reset in turn. During the upward movement of the scraper two and the scraper one, the scraper two and the scraper one can shake back and forth, thereby shaking off the residual materials on the scraper two and the scraper one, so that the scraper two and the scraper one can keep a clean state. After the scraper two and the scraper one are reset, as the carrier plate continues to move downward relative to the base frame, when the holding surface stops with the rod two, the rotating plate one and the rotating plate two can rotate upward at the same time. At this time, the carrier plate is remotely controlled to move upward relative to the base frame, so that the grab bucket one and the grab bucket two are gradually engaged to grab the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of grab bucket 1 and grab bucket 2 of the present invention.

[0019] Figure 3 It is a schematic diagram of the coordination of grab bucket 1, grab bucket 2, sliding seat and scraper 1 of the present invention.

[0020] Figure 4 This is a cross-sectional view of the present invention when the grab bucket 1 and the grab bucket 2 are fully engaged.

[0021] Figure 5 This is a cross-sectional view of the present invention when grab bucket 1 and grab bucket 2 are opened and rotating plate 1 corresponds to sensor 2.

[0022] Figure 6 It is a cross-sectional view of the present invention when the grab bucket 1 and the grab bucket 2 are opened and the rotating plate 1 and the rotating plate 2 are rotated upward.

[0023] Figure 7 It is a schematic diagram of the structure of grab bucket 1 and grab bucket 2 of the present invention.

[0024] Figure 8 It is a schematic diagram of the coordination of the first rotating plate, the second rotating plate and the carrier plate of the present invention.

[0025] Fig. 9 It is a schematic diagram of the coordination of the rotating plate 1, the rotating plate 2 and the shaft rod of the present invention.

[0026] Fig.10 It is a cross-sectional view of the rotating plate 1, the rotating plate 2, the carrier plate and the shaft rod of the present invention.

[0027] Fig.11 The figure is a schematic diagram of the cooperation of the slide seat, the scraper 1, the cooperation rod, the linkage rod and the swing rod of the present invention.

[0028] Figure numerals: 10, main beam; 11, wire rope 1; 111, tension sensor; 12, wire rope 2; 20, lifting assembly; 30, base frame; 31, carrier plate; 310, sensor 1; 311, shaft rod; 312, bevel gear 3; 313, sliding hole; 314, elastic member 3; 315, rod 2; 32, grab bucket 1; 320, baffle 1; 321, sensor 2; 33, grab bucket 2; 330, baffle 2; 331, top rod ; 3311, guide surface; 3312, retaining surface; 34, connecting arm; 35, rotating plate 1; 351, ring 1; 352, rod 1; 353, bevel gear 1; 354, elastic member 1; 36, rotating plate 2; 361, ring 2; 362, elastic member 2; 363, bevel gear 2; 41, sliding seat; 42, driving member; 43, scraper 1; 44, elastic member 5; 45, matching rod; 46, connecting rod; 47, rocker arm; 48, stopper. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figure 1-Figure 5As shown, an intelligent automated bridge grab crane comprises a movable main beam 10, a lifting assembly 20 arranged on the main beam 10 and capable of movement, and a grab assembly arranged below the lifting assembly 20, the grab assembly comprising a base frame 30 connected to the lifting assembly 20 through a steel wire rope 11, a carrier plate 31 slidably connected to the base frame 30, and a grab bucket 1 32 and a grab bucket 2 33 rotatably arranged on the carrier plate 31, the grab bucket 1 32 and the grab bucket 2 33 are rotatably connected to the base frame 30 through a connecting arm 34 respectively, the carrier plate 31 is connected to the lifting assembly 20 through a steel wire rope 12, a tension sensor 111 for detecting the pulled weight is provided on the steel wire rope 11, a sensor 1 310 is provided at the lower end of the carrier plate 31, the sensor 1 310 is used to detect the height of the carrier plate 31 from the ground when the grab bucket 1 32 and the grab bucket 2 33 are fully opened, and can be fed back to the remote control system to avoid a sudden collision between the grab bucket 1 32 and the grab bucket 2 33 and the ground.

[0031] like Figure 6-Figure 10 As shown, a shaft rod 311 is fixedly provided on the carrier plate 31, and a rotating plate 1 35 and a rotating plate 2 36 which respectively cooperate with the grab bucket 1 32 and the grab bucket 2 33 are rotatably provided on the shaft rod 311. The grab bucket 1 32 has an arc surface 1 which cooperates with the rotating plate 1 35, and the grab bucket 2 33 has an arc surface 2 which cooperates with the rotating plate 2 36. When the rotating plate 1 35 rotates, it can contact the inner wall of the grab bucket 1 32, and when the rotating plate 2 36 rotates, it can contact the inner wall of the grab bucket 2 33. The grab bucket 1 32 has a baffle 1 320 which cooperates with the rotating plate 1 35, and the grab bucket 2 33 has a baffle 2 330 which cooperates with the rotating plate 2 36. The rotating plate 1 35 has a baffle 1 320 which cooperates with the rotating plate 1 35, and the grab bucket 2 33 has a baffle 2 330 which cooperates with the rotating plate 2 36. The matching ring one 351, the rotating plate two 36 has a ring two 361 that is rotatably matched with the shaft 311, the ring two 361 is connected to the shaft 311 through an elastic member two 362, the elastic member two 362 is specifically a torsion spring, the ring one 351 is matched with the ring two 361 through a gear assembly, the gear assembly includes a bevel gear one 353 coaxially fixedly connected to the ring one 351, a bevel gear two 363 coaxially fixedly connected to the ring two 361, and a bevel gear three 312 rotatably connected to the carrier plate 31, the bevel gear three 312 is meshed with the bevel gear one 353 and the bevel gear two 363 at the same time, so when the rotating plate one 35 rotates, the rotating plate two 36 can rotate at the same time.

[0032] A rod 352 is slidably provided on the ring 1 351 through an elastic member 1 354, and the elastic member 1 354 is a spring. A sliding hole 313 cooperating with the rod 1 352 is provided in the carrier plate 31 along the length extension direction of the shaft rod 311. A rod 2 315 is slidably provided in the sliding hole 313 through an elastic member 314, and the elastic member 314 is specifically a spring. A top rod 331 cooperating with the rod 2 315 is provided on the grab bucket 2 33, and an arc is provided at one end of the rod 1 352 close to the sliding hole 313. The first end of the rod 315 away from the rod 1 352 has an arc-shaped portion 2, and the top rod 331 has a guide surface 3311 and a retaining surface 3312 that cooperate with the arc-shaped portion 2; in the initial state, the grab bucket 1 32 and the grab bucket 2 33 are in a fully engaged state, at this time, the rotating plate 1 35 is stopped against the baffle 1 320, the rotating plate 2 36 is stopped against the baffle 2 330, the elastic member 2 362 is in a force storage state, the rod 1 352 is located in the sliding hole 313, and the rod 2 315 is away from the sliding hole 313. One end of the rod 1 352 extends out of the carrier plate 31. During the downward movement of the carrier plate 31 relative to the base frame 30, the grab bucket 1 32 and the grab bucket 2 33 are gradually opened, and the top rod 331 gradually approaches the rod 2 315. When the guide surface 3311 stops with the arc-shaped portion 2, the rod 2 315 gradually moves into the sliding hole 313 and stops at the rod 1 352. In this process, the elastic member 314 is compressed. When the retaining surface 3312 stops with the rod 2 315, the arc-shaped portion 1 moves to the sliding hole 313. The edge of the hole 313, at this time, under the action of the elastic member 2 362, the rotating plate 1 35 and the rotating plate 2 36 can rotate upward at the same time; during the upward movement of the carrier plate 31 relative to the base frame 30, the grab bucket 1 32 and the grab bucket 2 33 are gradually engaged. During this process, the baffle plate 1 320 can stop with the rotating plate 1 35, and the baffle plate 2 330 can stop with the rotating plate 2 36. When the grab bucket 1 32 and the grab bucket 2 33 are fully engaged, the rod 1 352 is reset to the initial state again.

[0033] like Figure 1-Figure 7 as well as Fig.11As shown, a scraping assembly is provided on the grab bucket 1 32 and the grab bucket 2 33 respectively, and the scraping assembly includes a slide seat 41 slidably connected to the grab bucket 1 32, a driving member 42 for controlling the movement of the slide seat 41, and a scraper plate 1 43 connected to the slide seat 41 through an elastic member 4, the elastic member 4 is specifically a spring, the driving member 42 can be an electric push rod or a hydraulic cylinder, the scraper plate 1 43 is used to scrape the materials on the buckling surface of the grab bucket 1 32 and the rotating plate 1 35, and a shaking member is provided on the grab bucket 1 32 along a direction perpendicular to the movement of the slide seat 41 through an elastic member 5 44, the elastic member 5 44 is specifically a spring, and the shaking member includes a matching rod 45 and a connecting rod 46, the matching rod 45 has a plurality of protrusions, and the slide seat 41 is connected through A rocker arm 47 is provided through the rotation of elastic member six, and elastic member six is ​​specifically a torsion spring. A stopper 48 cooperating with the rocker arm 47 is fixedly provided on the slide 41. It should be noted that the elastic coefficient of elastic member five 44 is greater than that of elastic member six. When the slide 41 moves downward, the rocker arm 47 abuts against the stopper 48, and the rocker arm 47 can abut against the linkage rod 46, so that the matching rod 45 and the scraper 43 are disengaged from the abutment. When the slide 41 moves upward, the rocker arm 47 is disengaged from the abutment with the stopper 48, and the linkage rod 46 abuts against the rocker arm 47, so that the matching rod 45 extends out of the engaging surface of the grab bucket 32, so that with the cooperation of the protrusion and the elastic member four, when the scraper 43 moves upward, the scraper 43 can shake back and forth.

[0034] It should be noted that the scraping assembly on the second grab bucket 33 is consistent with the scraping assembly on the first grab bucket 32 ​​in structure. In the initial state, the second scraper on the second grab bucket 33 is located above the first scraper 43.

[0035] A sensor 2 321 is provided at the upper end of the grab bucket 1 32. When the grab bucket 1 32 and the grab bucket 2 33 are opened and the rotating plate 1 35 corresponds to the sensor 2 321, the scraping assembly can clean the engaging surfaces of the grab bucket 1 32 and the grab bucket 2 33 as well as the rotating plate 1 35 and the rotating plate 2 36.

[0036] Specific working principle: Reference Figure 1-Figure 11In the process of grabbing materials, the steel wire rope 11 and the steel wire rope 2 12 are remotely controlled to make the carrier plate 31 move downward relative to the base frame 30, and the grab bucket 1 32 and the grab bucket 2 33 are gradually opened. The rotating plate 1 35 scrapes off the residual materials on the inner wall of the grab bucket 1 32, and the rotating plate 2 36 scrapes off the residual materials on the inner wall of the grab bucket 2 33. When the side of the rotating plate 1 35 is flush with the buckling surface of the grab bucket 1 32, the side of the rotating plate 2 36 is flush with the buckling surface of the grab bucket 2 33, at this time, the rotating plate 1 35 corresponds to the sensor 2 321, and the sensor 2 321 feeds back the signal to the remote control system, so that the scraper 2 and the scraper 1 43 move downward in sequence, so as to scrape off the residual materials on the side of the rotating plate 1 35, the buckling surface of the grab bucket 1 32, the side of the rotating plate 2 36 and the buckling surface of the grab bucket 2 33, and then the scraper 2 and the scraper 1 43 moves upward and resets in sequence. During the upward movement of scraper two and scraper one 43, scraper two and scraper one 43 can shake back and forth, thereby shaking off the residual materials on scraper two and scraper one 43, so that scraper two and scraper one 43 can keep clean. After scraper two and scraper one 43 are reset, as the carrier plate 31 continues to move downward relative to the base frame 30, when the holding surface 3312 stops with the rod two 315, the rotating plate one 35 and the rotating plate two 36 can rotate upward at the same time. At this time, the carrier plate 31 is remotely controlled to move upward relative to the base frame 30, so that the grab bucket one 32 and the grab bucket two 33 are gradually engaged to grab the materials. In this process, the baffle one 320 can stop with the rotating plate one 35, and the baffle two 330 can stop with the rotating plate two 36. When the grab bucket one 32 and the grab bucket two 33 are fully engaged, the rod one 352 is reset to the initial state again.

[0037] It should be noted that in the present embodiment, the rotating plate 1 35 and the rotating plate 2 36 are respectively U-shaped. In order to reduce the scattering of the powdered materials in the grab bucket 1 32 and the grab bucket 2 33 when the grab bucket 1 32 and the grab bucket 2 33 are fully engaged, the U-shaped openings of the rotating plate 1 35 and the rotating plate 2 36 can be closed.

[0038] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An intelligent automatic bridge grab crane, comprising a movable main beam, a lifting assembly disposed on the main beam and capable of movement, and a grab assembly disposed below the lifting assembly, characterized in that: The grab assembly includes a base frame connected to the lifting assembly through a steel wire rope 1, a carrier plate slidably connected to the base frame, and a grab bucket 1 and a grab bucket 2 rotatably arranged on the carrier plate, wherein the grab bucket 1 and the grab bucket 2 are respectively connected to the base frame through a connecting arm, the carrier plate is connected to the lifting assembly through a steel wire rope 2, and a tension sensor for detecting the pulled weight is arranged on the steel wire rope 1; A rotating plate 1 and a rotating plate 2 are rotatably provided on the carrier plate, and the rotating plate 1 and the rotating plate 2 are respectively matched with the grab bucket 1 and the grab bucket 2. When the rotating plate 1 rotates, the rotating plate 2 can rotate simultaneously. The grab bucket 1 and the grab bucket 2 are respectively provided with a scraping assembly. A sensor 2 is provided at the upper end of the grab bucket 1. When the grab bucket 1 and the grab bucket 2 are opened and the rotating plate 1 corresponds to the sensor 2, the scraping assembly can clean the buckling surface of the grab bucket 1 and the grab bucket 2 and the rotating plate 1 and the rotating plate 2. As the grab bucket 1 and the grab bucket 2 continue to open, the rotating plate 1 and the rotating plate 2 can rotate upward simultaneously. A sensor 1 is provided at the lower end of the carrier plate, and the sensor 1 is used to detect the height of the carrier plate from the ground when the grab bucket 1 and the grab bucket 2 are fully opened.

2. The intelligent automatic bridge grab crane according to claim 1, characterized in that: A shaft rod is fixed on the carrier plate, and rotating plate 1 and rotating plate 2 are respectively connected to the shaft rod for rotation. Rod 1 is slidably provided on rotating plate 1 through elastic member 1, and grab bucket 2 is provided with a push rod matched with rod 1. When rod 1 and push rod are stopped, rotating plate 1 and rotating plate 2 can rotate upward at the same time.

3. The intelligent automatic bridge grab crane according to claim 2, characterized in that: The rotating plate 1 is provided with a ring 1 which is rotatably matched with the shaft rod, the rotating plate 2 is provided with a ring 2 which is rotatably matched with the shaft rod, the ring 2 is connected to the shaft rod through the elastic member 2, and the ring 1 is matched with the ring 2 through the gear assembly.

4. The intelligent automatic bridge grab crane according to claim 3, characterized in that: The gear assembly includes a bevel gear 1 coaxially fixedly connected to the ring, a bevel gear 2 coaxially fixedly connected to the ring, and a bevel gear 3 rotatably connected to the carrier plate. The bevel gear 3 is meshed with the bevel gear 1 and the bevel gear 2 at the same time.

5. The intelligent automatic bridge grab crane according to claim 2, characterized in that: A sliding hole matched with the rod 1 is provided in the carrier plate along the extension direction of the shaft rod, and the rod 2 is slidably arranged in the sliding hole through the elastic member 3.

6. The intelligent automatic bridge grab crane according to claim 5, characterized in that: The end of the rod one close to the sliding hole has an arc-shaped portion one, the end of the rod two away from the rod one has an arc-shaped portion two, and the top rod has a guiding surface and a retaining surface matched with the arc-shaped portion two.

7. The intelligent automatic bridge grab crane according to claim 1, characterized in that: The scraping assembly includes a slide seat slidably connected to the grab bucket, a driving member for controlling the movement of the slide seat, and a scraper plate connected to the slide seat via an elastic member 4, wherein the scraper plate is used to scrape the material on the engaging surface of the grab bucket.

8. The intelligent automatic bridge grab crane according to claim 7, characterized in that: The grab bucket is provided with a shaking piece on the upper side perpendicular to the direction of movement of the slide seat through an elastic piece five, and the shaking piece includes a matching rod and a connecting rod. A swing rod is provided on the slide seat through the rotation of an elastic piece six, and a stopper matched with the swing rod is fixed on the slide seat.

9. The intelligent automatic bridge grab crane according to claim 8, characterized in that: When the slide moves downward, the swing rod abuts against the block, and the swing rod can abut against the connecting rod, so that the matching rod and the scraper are separated from the abutment; when the slide moves upward, the swing rod is separated from the abutment with the block, and the connecting rod abuts against the swing rod, so that the matching rod extends out of the buckling surface of the grab bucket.

10. An intelligent automatic bridge grab crane according to any one of claims 1 to 9, characterized in that: When the rotating plate 1 rotates, it can contact the inner wall of the grab bucket 1, and the grab bucket 1 has a baffle 1 that matches the rotating plate 1. When the rotating plate 2 rotates, it can contact the inner wall of the grab bucket 2, and the grab bucket 2 has a baffle 2 that matches the rotating plate 2.

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