An automated grab with a function of preventing goods from leaking

Abstract

The present invention relates to the field of automated grabs, and provides an automated grab with a function of preventing goods from leaking. It includes a grab hydraulic press body, a first grab and a second grab. A hydraulic rod is installed on the grab hydraulic press body. A soft clamping mechanism, an auxiliary clamping mechanism, a plug plate mechanism and a pressing mechanism are arranged on the grab hydraulic press body. The first grab and the second grab are both movably installed with the hydraulic rod. The soft clamping mechanism is installed on the inner side wall of the first grab. The auxiliary clamping mechanism is fixedly connected to the surface wall of the first grab. The spring six between the two main inclined plates and the second grab will maintain the clamping force of the main inclined plate on the cylindrical object. After the user gently opens the second grab, when a general grab places a cylindrical object, the cylindrical object will scatter on the ground, and even stir up a large amount of dust. In this device, when the second grab clamps the cylindrical object, it stacks into a cone shape, and the cylindrical object is more stable when it falls to the ground, reducing the dust stirred up when multiple cylindrical objects scatter and fall to the ground.

Description

Technical Field

[0001] The present invention relates to the field of automated grabs, and particularly to an automated grab with a function of preventing goods from leaking. Background Art

[0002] A grab is a special tool for a crane to grasp dry bulk goods. It consists of two or more closable bucket-shaped jaw plates that together form a space for containing materials. When loading, the jaw plates are closed in the material pile, and the materials are grabbed into the containing space. When unloading, the jaw plates are opened in a suspended state above the material pile, and the materials fall on the material pile. The opening and closing of the jaw plates are generally controlled by the steel wire rope of the crane's hoisting mechanism. Grab operations involve no heavy physical labor, can achieve high loading and unloading efficiency, and ensure safety. It is the main dry bulk goods loading and unloading tool in ports. According to the types of goods handled, it can be divided into ore grabs, coal grabs, grain grabs, wood grabs, etc.

[0003] For example, the Chinese patent discloses "Log Grab", publication number: CN106586824A. The four-rope log grab of the present invention is an effective tool for replacing manual labor in log bundling loading and unloading under a double-drum crane. Using this grab can separate people from logs during the loading and unloading process, avoid the harm caused by the rolling of round logs to people, and avoid the harm caused by the falling of logs in the air after the steel wire rope breaks. Not only is the safety greatly improved, but the production efficiency is also doubled;

[0004] This grab has the following disadvantages:

[0005] (1) When this grab grabs a long cylindrical object, since both sides of the grab are through, the long cylindrical object is unstable in the grab and will shake, resulting in the instability of the grab.

[0006] (2) When this grab grabs a long cylindrical object, since no protective measures are taken for the long cylindrical object, the long cylindrical object is likely to fall when it is grabbed and suspended in the air.

[0007] (3) When this grab is engaged, there will be a gap at the bottom, and the cylindrical object will fall along the gap, resulting in unstable grabbing of the grab.

[0008] (4) When this grab places the cylindrical object, the cylindrical object will scatter on the ground and even stir up a large amount of dust. Summary of the Invention

[0009] Aiming at the problems, the purpose of the present invention is to provide an automated grab with a function of preventing goods from leaking to solve the problems raised in the above background art.

[0010] The present invention adopts the following technical solutions:

[0011] An automated grab with a function of preventing goods from leaking, comprising a grab hydraulic press body, a first grab and a second grab. A hydraulic rod is installed on the grab hydraulic press body. A soft clamping mechanism, an auxiliary clamping mechanism, a plug plate mechanism and a shaping mechanism are arranged on the grab hydraulic press body. The first grab and the second grab are both movably installed on the hydraulic rod. The soft clamping mechanism is installed on the inner side wall of the first grab. The auxiliary clamping mechanism is fixedly connected to the surface wall of the first grab. The plug plate mechanism and the shaping mechanism are both installed on the inner side wall of the second grab. Among them, the soft clamping mechanism includes a sliding tube box. A side plate is fixedly installed at the end of the sliding tube box. A spring four is fixedly installed between the sliding tube box and the side plate.

[0012] Preferably, an upper sliding rod is fixedly installed on the sliding tube box. A sliding rail is opened at the top of the inner side wall of the first grab. The upper sliding rod on the sliding tube box is slidably connected in the sliding rail of the first grab. A side stop block is fixedly installed on the inner side wall of the first grab. A spring five is fixedly installed on the inner side wall of the sliding tube box. A C-shaped tube is fixedly installed on the inner side wall of the sliding tube box. There are three sliding tube boxes in each row on the inner side wall of the first grab. The three sliding tube boxes gradually become smaller in the order of the mouth of the first grab. The third sliding tube box is slidably connected to the side stop block.

[0013] Preferably, the auxiliary clamping mechanism includes a clamping plate. A rotating rod one is rotatably connected to the inner surface of the clamping plate. The rotating rod one is horizontally fixedly installed on the surface wall of the first grab. A spring three is fixedly installed at the end of the clamping plate. A rubber plate is fixedly installed at the end of the spring three. A spring two is fixedly installed at the end of the clamping plate. A side clamping plate is fixedly installed between the clamping plate and the first grab.

[0014] Preferably, the plug plate mechanism includes an upper pressing plate. A spring one is fixedly installed between the upper pressing plate and the inner side of the second grab. A rack one is fixedly installed at the end of the upper pressing plate. The end of the rack one is fixedly installed on the second grab. The end of the rack one is meshed with a gear one. The gear one is horizontally rotatably connected to the second grab by a shaft rod one. The end of the gear one is meshed with a gear two. The gear two is horizontally rotatably connected to the second grab by a shaft rod two. The end of the gear two is meshed with a rack. The end of the rack is slidably installed with a sliding tube between it and the second grab. An inclined surface is opened on the inner side wall of the second grab. The upper pressing plate is flush with the inclined surface. A chute is opened on the second grab. A slot is opened on the second grab. The rack is located in the chute.

[0015] Preferably, the shaping mechanism includes a main inclined plate. A spring six is fixedly installed between the main inclined plate and the second grab. An auxiliary inclined plate is installed on the main inclined plate. A rotating rod two is horizontally rotatably connected between the auxiliary inclined plate and the main inclined plate. A spring seven is fixedly installed between the auxiliary inclined plate and the main inclined plate.

[0016] The beneficial effects of the present invention are:

[0017] First: Two first grab buckets clamp a longer cylindrical object. When the cylindrical object is clamped by the two first grab buckets, the slide tube boxes inside the two first grab buckets will be squeezed by the cylindrical object. The side plates on the surface of the slide tube boxes will come into contact with the cylindrical object. At the same time, the spring four between the side plates and the slide tube boxes will relieve the impact force when the cylindrical object contacts the side plates through its own elastic force. The cylindrical object pushes the slide tube boxes into the first grab buckets. Since the number of slide tube boxes in each row is three and the three slide tube boxes are sleeved in sequence, when each row of slide tube boxes is squeezed, they will move towards the side stoppers in sequence. The first slide tube box moves closer to the side stopper. The movement of the slide tube box drives the upper slide rod to slide in the slide rail inside the first grab bucket. At the same time, the first slide tube box will gradually fit over the outside of the second slide tube box. At the same time, the spring five inside the first slide tube box will maintain the pushing force between the two slide tube boxes through its own elastic force, which is conducive to keeping the slide tube boxes in the two first grab buckets clamping the cylindrical object, and the cylindrical object will not fall off easily.

[0018] Second: When a general grab bucket clamps a longer cylindrical object, the two sides of the grab bucket are through, resulting in the cylindrical object inside the grab bucket being easy to fall off. In this device, the first grab bucket uses multiple rows of slide tube boxes to clamp the cylindrical object a second time and will not fall off easily when clamping a longer cylindrical object, improving the practicability of the grab bucket.

[0019] Third: The two rubber plates between the two clamping plates will come into contact with the cylindrical object. At the same time, the surfaces of the two rubber plates have a certain elasticity, which can increase the contact area with the cylindrical object. When the two rubber plates clamp the cylindrical object, they will be subject to the reaction force of the cylindrical object, resulting in the deformation of the spring three between the rubber plates and the clamping plates. The two rubber plates can assist the first grab bucket to clamp the cylindrical object again, improving the clamping stability.

[0020] Fourth: When there are more cylindrical objects, the two rubber plates will drive the two clamping plates to rotate to both sides. The two clamping plates rotate outside the two first rotating rods. At the same time, the spring two between the clamping plates and the side clamping plates is squeezed and deformed. The two spring twos will maintain the clamping force between the two rubber plates and the cylindrical object through their own elastic forces. By using the rotation of the clamping plates, it is conducive to clamping more cylindrical objects and improving the practicability of clamping.

[0021] Fifthly: Multiple cylindrical objects will accumulate on the upper pressure plate inside the second grab bucket. Since the cylindrical objects are relatively heavy, they will drive the upper pressure plate to move downward. When the upper pressure plate moves downward, spring one will be compressed and deformed. The downward movement of the upper pressure plate drives rack one to move downward. Since the shape of the chute is L-shaped, when rack one moves downward, its bottom will extend beyond the bottom of the second grab bucket. As rack one moves downward inside the second grab bucket, the downward movement of rack one drives gear one to rotate. The rotation of gear one drives gear two to rotate. The rotations of gear one and gear two are in opposite directions. The rotation of gear two drives the rack to move. The rack moves into the slot of another second grab bucket. Similarly for the rack inside the other second grab bucket. Through the mutual insertion of the racks between the two second grab buckets, generally when the two second grab buckets are engaged, there will be a gap at the bottom, and the cylindrical objects will fall along the gap. In this device, the two second grab buckets hold the cylindrical objects through four racks, thus preventing the cylindrical objects from falling and improving the stability of clamping.

[0022] Sixthly: Multiple cylindrical objects will come into contact with the main inclined plate. Since the main inclined plate is an inclined surface, multiple cylindrical objects will form a cone shape inside the two second grab buckets. Spring six between the two main inclined plates and the second grab bucket will maintain the clamping force of the main inclined plate on the cylindrical objects. After the user gently opens the second grab bucket, generally when placing the cylindrical objects in the grab bucket, the cylindrical objects will scatter on the ground, even raising a large amount of dust. In this device, when the second grab bucket clamps the cylindrical objects, they are stacked into a cone shape, and the cylindrical objects are more stable when falling to the ground, reducing the dust raised when multiple cylindrical objects scatter and fall to the ground. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a schematic structural diagram of the grab bucket hydraulic press body of the present invention;

[0025] Figure 2 It is a schematic diagram of the first grab bucket of the present invention;

[0026] Figure 3 It is a schematic diagram of the sliding tube box of the present invention;

[0027] Figure 4 It is a schematic diagram of the side plate of the present invention;

[0028] Figure 5 It is a schematic diagram of the side stop block of the present invention;

[0029] Figure 6 It is a schematic diagram of the C-shaped tube of the present invention;

[0030] Figure 7 Schematic diagram of the second grab of the present invention;

[0031] Figure 8 Schematic diagram of the main inclined plate of the present invention;

[0032] Figure 9 Schematic diagram of the upper pressing plate of the present invention;

[0033] Figure 10 Schematic diagram of the first rack of the present invention.

[0034] Explanation of the reference numerals in the attached drawings:

[0035] 1. Grab hydraulic press body; 11. Hydraulic rod; 12. First grab; 13. Side clamping plate; 14. First rotating rod; 15. Clamping plate; 16. Second spring; 17. Third spring; 18. Rubber plate; 19. Slide tube box; 2. Side plate; 21. Fourth spring; 22. Fifth spring; 23. C-shaped tube; 24. Upper sliding rod; 25. Side stop block; 26. Second grab; 27. Sixth spring; 28. Main inclined plate; 29. Seventh spring; 3. Auxiliary inclined plate; 31. Second rotating rod; 32. Chute; 33. Slot; 34. Inclined surface; 35. Upper pressing plate; 36. First rack; 37. First gear; 38. First shaft rod; 39. Second gear; 4. Second shaft rod; 41. Rack; 42. Slide tube.

[0036] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Embodiment 1:

[0041] Combined with Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , an automated grab with a function of preventing goods from leaking, comprising a grab hydraulic press body 1, a first grab 12 and a second grab 26. A hydraulic rod 11 is installed on the grab hydraulic press body 1. A soft clamping mechanism, an auxiliary clamping mechanism, a plug plate mechanism and a pressing mechanism are arranged on the grab hydraulic press body 1. The first grab 12 and the second grab 26 are both movably installed with the hydraulic rod 11. The soft clamping mechanism is installed on the inner side wall of the first grab 12. The auxiliary clamping mechanism is fixedly connected to the outer wall of the first grab 12. The plug plate mechanism and the pressing mechanism are both installed on the inner side wall of the second grab 26. Among them, the soft clamping mechanism includes a sliding tube box 19. A side plate 2 is fixedly installed at the end of the sliding tube box 19. A spring four 21 is fixedly installed between the sliding tube box 19 and the side plate 2. An upper sliding rod 24 is fixedly installed on the sliding tube box 19. A slide rail is opened at the top of the inner side wall of the first grab 12. The upper sliding rod 24 on the sliding tube box 19 is slidably connected in the slide rail of the first grab 12. A side stop block 25 is fixedly installed on the inner side wall of the first grab 12. A spring five 22 is fixedly installed on the inner side wall of the sliding tube box 19. A C-shaped tube 23 is fixedly installed on the inner side wall of the sliding tube box 19. There are three sliding tube boxes 19 in each row on the inner side wall of the first grab 12. The three sliding tube boxes 19 gradually become smaller in the order of the mouth of the first grab 12. The third sliding tube box 19 is slidably connected to the side stop block 25.

[0042] In use, when the user needs to use the bucket grab to hold a long cylindrical object, the hydraulic rod 11 is connected to the first grab 12, and the grab hydraulic press body 1 starts to operate. The grab hydraulic press body 1 drives the two hydraulic rods 11 to operate. The operation of the two hydraulic rods 11 drives the two first grabs 12 to open and close. The two first grabs 12 clamp the long cylindrical object. When the cylindrical object is clamped by the two first grabs 12, the slide tube boxes 19 in the two first grabs 12 will be squeezed by the cylindrical object. The side plates 2 on the surface of the slide tube box 19 will contact the cylindrical object. At the same time, the spring four 21 between the side plate 2 and the slide tube box 19 will relieve the impact force when the cylindrical object contacts the side plate 2 through its own elastic force. The cylindrical object pushes the slide tube box 19 into the first grab 12. Since the number of slide tube boxes 19 in each row is three, and the three slide tube boxes 19 are sleeved in sequence, when each row of slide tube boxes 19 is squeezed, they will move towards the side stop block 25 in sequence. The first slide tube box 19 approaches the side stop block 25. The movement of the slide tube box 19 drives the upper slide rod 24 to slide in the slide rail in the first grab 12. At the same time, the first slide tube box 19 will gradually fit over the outside of the second slide tube box 19. At the same time, the spring five 22 in the first slide tube box 19 will maintain the thrust between the two slide tube boxes 19 through its own elastic force, which is beneficial to keeping the slide tube boxes 19 in the two first grabs 12 clamping the cylindrical object, and the cylindrical object will not easily fall off. The movement of the second and third slide tube boxes 19 is the same as that of the first slide tube box 19. Generally, when a grab holds a long cylindrical object, the two sides of the grab are through, resulting in the cylindrical object in the grab being easy to fall off. In this device, the first grab 12 uses multiple rows of slide tube boxes 19 to clamp the cylindrical object twice, and it will not easily fall off when holding a long cylindrical object, improving the practicability of the grab.

[0043] Embodiment 2

[0044] On the basis of Embodiment 1: Combining Figure 1 , an auxiliary clamping mechanism is provided on the grab hydraulic press body 1. The auxiliary clamping mechanism includes a clamping plate 15. A first rotating rod 14 is rotatably connected to the inner surface of the clamping plate 15. The first rotating rod 14 is horizontally and fixedly installed on the surface wall of the first grab 12. A spring three 17 is fixedly installed at the end of the clamping plate 15. A rubber plate 18 is fixedly installed at the end of the spring three 17. A spring two 16 is fixedly installed at the end of the clamping plate 15. A side clamping plate 13 is fixedly installed between the clamping plate 15 and the first grab 12.

[0045] During use, when the hydraulic rod 11 drives the two first grabbers 12 to open and close, the two first grabbers 12 will simultaneously drive the two clamping plates 15 to move. When the two first grabbers 12 clamp a cylindrical object, the two rubber plates 18 between the two clamping plates 15 will come into contact with the cylindrical object. At the same time, the surfaces of the two rubber plates 18 have a certain elasticity, which can increase the contact area with the cylindrical object. When the two rubber plates 18 clamp the cylindrical object, they will be subjected to the reaction force of the cylindrical object, causing the springs three 17 between the rubber plates 18 and the clamping plates 15 to deform. The two rubber plates 18 can assist the first grabbers 12 to clamp the cylindrical object again, improving the clamping stability. When there are more cylindrical objects, the two rubber plates 18 will drive the two clamping plates 15 to rotate to both sides. The two clamping plates 15 rotate outside the two first rotating rods 14, and at the same time, the springs two 16 between the clamping plates 15 and the side clamping plates 13 are squeezed and deformed. The two springs two 16 will maintain the clamping force between the two rubber plates 18 and the cylindrical object through their own elastic forces. By utilizing the rotation of the clamping plates 15, it is beneficial to clamp more cylindrical objects and improve the practicality of clamping.

[0046] Embodiment 3:

[0047] Combined with Figure 9 and the grab hydraulic press body 1, an inserting plate mechanism is provided on the grab hydraulic press body 1. The inserting plate mechanism includes an upper pressing plate 35. A spring one is fixedly installed between the upper pressing plate 35 and the inner side of the second grabber 26. A first rack 36 is fixedly installed at the end of the upper pressing plate 35, and the end of the first rack 36 is fixedly installed on the second grabber 26. The end of the first rack 36 is meshed with a first gear 37. A first shaft rod 38 is horizontally rotatably connected between the first gear 37 and the second grabber 26. The end of the first gear 37 is meshed with a second gear 39. A second shaft rod 4 is horizontally rotatably connected between the second gear 39 and the second grabber 26. The end of the second gear 39 is meshed with a rack 41. A sliding tube 42 is slidably installed between the end of the rack 41 and the second grabber 26. An inclined surface 34 is provided on the inner side wall of the second grabber 26, and the upper pressing plate 35 is flush with the inclined surface 34. A sliding groove 32 is provided on the second grabber 26, and a slot 33 is provided on the second grabber 26. The rack 41 is located in the sliding groove 32.

[0048] In use, when the user needs to grip a cylindrical object smaller than the length of the second grab bucket 26, the user can install the second grab bucket 26 on the hydraulic rod 11. The hydraulic rod 11 will drive the second grab bucket 26 to open and close. The second grab bucket 26 will grip the cylindrical object. The inner side wall of the second grab bucket 26 is provided with an inclined surface 34 which helps to grip the cylindrical object. When the two second grab buckets 26 are completely closed, multiple cylindrical objects will accumulate on the upper pressure plate 35 inside the second grab bucket 26. The relatively large weight of the cylindrical object will drive the upper pressure plate 35 to move downward. The downward movement of the upper pressure plate 35 will cause the first spring to be compressed and deformed. The downward movement of the upper pressure plate 35 drives the first rack 36 to move downward. Since the shape of the chute 32 is L-shaped, when the first rack 36 moves downward, its bottom will extend beyond the bottom of the second grab bucket 26. The first rack 36 moves downward inside the second grab bucket 26. The downward movement of the first rack 36 drives the first gear 37 to rotate. The rotation of the first gear 37 drives the second gear 39 to rotate. The rotation directions of the first gear 37 and the second gear 39 are opposite. The rotation of the second gear 39 drives the rack 41 to move. The rack 41 moves into the slot 33 of the other second grab bucket 26. The rack 41 in the other second grab bucket 26 is the same. Through the mutual insertion of the racks 41 between the two second grab buckets 26, generally when the two second grab buckets 26 are engaged, there will be a gap at the bottom, and the cylindrical object will fall along the gap. In this device, the two second grab buckets 26 hold the cylindrical object through four racks 41, thus preventing the cylindrical object from falling and improving the stability of gripping. When it is necessary to separate the two second grab buckets 26, the user slowly brings the two second grab buckets 26 into contact with the ground. Before the two second grab buckets 26 contact the ground, the two first racks 36 will contact the ground in advance. The two first racks 36 are pressed and reset, and at the same time the four racks 41 are reset. At this time, the two second grab buckets 26 can be smoothly opened.

[0049] Embodiment 4

[0050] On the basis of Embodiment 3, Embodiment 4 combines Figure 7 and Figure 8 , a profiling mechanism is provided on the grab hydraulic press body 1. The profiling mechanism includes a main inclined plate 28. A sixth spring 27 is fixedly installed between the main inclined plate 28 and the second grab bucket 26. A secondary inclined plate 3 is installed on the main inclined plate 28. A second rotating rod 31 is horizontally rotatably connected between the secondary inclined plate 3 and the main inclined plate 28. A seventh spring 29 is fixedly installed between the secondary inclined plate 3 and the main inclined plate 28.

[0051] During use, when the two second grab buckets 26 are engaged, the two auxiliary inclined plates 3 will come into contact in advance. The two auxiliary inclined plates 3 are squeezed and stressed to rotate. The two auxiliary inclined plates 3 rotate on the main inclined plate 28 through the second rotating rod 31, and at the same time compress and deform the seventh spring 29. The two auxiliary inclined plates 3 are stressed to make the upper parts of the two main inclined plates 28 approach the inner walls of the second grab buckets 26, and the lower parts of the two main inclined plates 28 squeeze the cylindrical objects. A plurality of cylindrical objects will come into contact with the main inclined plate 28. Since the main inclined plate 28 is an inclined surface, a plurality of cylindrical objects form a cone in the two second grab buckets 26. The sixth spring 27 between the two main inclined plates 28 and the second grab buckets 26 will maintain the clamping force of the main inclined plate 28 on the cylindrical objects. After the user gently opens the second grab bucket 26, when an ordinary grab bucket places cylindrical objects, the cylindrical objects will scatter on the ground, even raising a large amount of dust. In this device, when the second grab bucket 26 clamps the cylindrical objects, they are stacked into a cone, and the cylindrical objects are more stable when falling to the ground, reducing the dust raised when a plurality of cylindrical objects scatter and fall to the ground.

[0052] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. An automated grab with a function of preventing goods from leaking, comprising a grab hydraulic press body (1), a first grab (12) and a second grab (26). A hydraulic rod (11) is installed on the grab hydraulic press body (1). Characterized in that: A soft clamping mechanism, an auxiliary clamping mechanism, a plug plate mechanism and a pressing mechanism are arranged on the grab hydraulic press body (1). The soft clamping mechanism is installed on the inner side wall of the first grab (12). The auxiliary clamping mechanism is fixedly connected to the surface wall of the first grab (12). The plug plate mechanism and the pressing mechanism are both installed on the inner side wall of the second grab (26). When it is necessary to clamp a relatively long cylindrical object with the grab, connect the hydraulic rod (11) to the first grab (12). When the user needs to clamp a cylindrical object smaller than the length of the second grab (26), install the second grab (26) on the hydraulic rod (11). Wherein the soft clamping mechanism includes a sliding tube box (19). A side plate (2) is fixedly installed at the end of the sliding tube box (19). A fourth spring (21) is fixedly installed between the sliding tube box (19) and the side plate (2). An upper sliding rod (24) is fixedly installed on the sliding tube box (19). A slide rail is opened at the top of the inner side wall of the first grab (12). The upper sliding rod (24) on the sliding tube box (19) is slidably connected in the slide rail of the first grab (12). A side stop block (25) is fixedly installed on the inner side wall of the first grab (12). A fifth spring (22) is fixedly installed on the inner side wall of the sliding tube box (19). A C-shaped tube (23) is fixedly installed on the inner side wall of the sliding tube box (19). There are three sliding tube boxes (19) in each row on the inner side wall of the first grab (12). The three sliding tube boxes (19) become smaller in turn with the mouth of the first grab (12). The third sliding tube box (19) is slidably connected to the side stop block (25).

2. An automated grab with a function of preventing goods from leaking according to claim 1, Characterized in that: The auxiliary clamping mechanism includes a clamping plate (15). A first rotating rod (14) is rotatably connected to the inner surface of the clamping plate (15). The first rotating rod (14) is horizontally fixedly installed on the surface wall of the first grab (12).

3. An automated grab with a function of preventing goods from leaking according to claim 2, Characterized in that: A third spring (17) is fixedly installed at the end of the clamping plate (15). A rubber plate (18) is fixedly installed at the end of the third spring (17). A second spring (16) is fixedly installed at the end of the clamping plate (15). A side clamping plate (13) is fixedly installed between the clamping plate (15) and the first grab (12).

4. An automated grab with a function of preventing goods from leaking according to claim 1, Characterized in that: The plug-in plate mechanism includes an upper pressure plate (35). A first spring is fixedly installed between the upper pressure plate (35) and the inner side of the second grab (26). A first rack (36) is fixedly installed at the end of the upper pressure plate (35), and the end of the first rack (36) is fixedly installed on the second grab (26). The end of the first rack (36) is meshed with a first gear (37). A first shaft rod (38) is horizontally rotatably connected between the first gear (37) and the second grab (26). The end of the first gear (37) is meshed with a second gear (39). A second shaft rod (4) is horizontally rotatably connected between the second gear (39) and the second grab (26). The end of the second gear (39) is meshed with a rack (41). A sliding tube (42) is slidably installed between the end of the rack (41) and the second grab (26).

5. An automated grab with a function of preventing goods from leaking, according to claim 4, characterized in that: An inclined surface (34) is provided on the inner side wall of the second grab (26). The upper pressure plate (35) is flush with the inclined surface (34). A chute (32) is provided on the second grab (26), and a slot (33) is provided on the second grab (26). The rack (41) is located in the chute (32).

6. An automated grab with a function of preventing goods from leaking, according to claim 1, characterized in that: The pressing mechanism includes a main inclined plate (28). A sixth spring (27) is fixedly installed between the main inclined plate (28) and the second grab (26). An auxiliary inclined plate (3) is installed on the main inclined plate (28). A second rotating rod (31) is horizontally rotatably connected between the auxiliary inclined plate (3) and the main inclined plate (28). A seventh spring (29) is fixedly installed between the auxiliary inclined plate (3) and the main inclined plate (28).

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