Blocky substance grabbing and transporting device

Abstract

The utility model discloses a blocky substance grabbing and transporting device which comprises a contraction grabbing device A, a contraction grabbing device B, a first hinge rod, a second hinge rod, a third hinge rod, a fourth hinge rod, a first grabbing plate and a second grabbing plate. The first hinge rod, the second hinge rod, the third hinge rod and the fourth hinge rod are parallel to one another and are arranged in a rhombus shape; one end of each hinge rod is defined as an A end, and the other end is defined as a B end; the contraction grabbing device A and the contraction grabbing device B are hinged to the ends A and B of the first hinge rod, the second hinge rod, the third hinge rod and the fourth hinge rod correspondingly. The first grabbing plate and the second grabbing plate are connected to the bottoms of the contraction grabbing device A and the contraction grabbing device B correspondingly and connect the contraction grabbing device A and the contraction grabbing device B together. The device can be used for grabbing, transporting and stacking blocky objects such as aluminum alloy and intermediate alloy, and potential safety hazards caused by chain clamping are avoided; the structure is simple, easy to control, stable and safe; the position can be accurately controlled, the grabbing and transporting efficiency is improved, and operation is simplified.

Description

Technical Field

[0001] The utility model relates to a block material grabbing and transporting device, belonging to the technical field of alloy block material grabbing and transporting. Background Art

[0002] Aluminum alloy has low density but high strength, close to or exceeding high-quality steel, good plasticity, can be processed into various profiles, and has excellent electrical conductivity, thermal conductivity and corrosion resistance. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industries, and its usage is second only to steel. With the rapid development of science and technology and industrial economy in recent years, the demand for aluminum alloy welded structural parts has increased, which has led to in-depth research on the weldability of aluminum alloys. The wide application of aluminum alloys has promoted the development of aluminum alloy welding technology, and the development of welding technology has expanded the application field of aluminum alloys.

[0003] Intermediate alloys are made by making certain elements into alloys, making them easier to add to alloys, solving problems such as burnout and difficulty in melting high-melting-point alloys, while having little impact on the raw materials.

[0004] Aluminum alloys and intermediate alloys are usually prepared in blocks, but due to their large mass, there are problems with stacking and handling difficulties. The patent with announcement number CN 205916909 U discloses a device for lifting magnesium chloride and block materials. The boom and the support arm are connected to form a scissors structure. The bottom of the boom and the support arm is provided with a triangular claw nail. The lifting is achieved by installing two lifting chains on the top of the boom and the support arm. When lifting, the claw nail needs to be inserted into the bottom of the block. However, the chain is easy to get stuck. When one side is stuck, there are safety hazards such as falling off due to uneven force. The operation is difficult and difficult to control. Utility Model Content

[0005] The utility model provides a block material grabbing and transporting device, which is easy to operate and control, has good stability, simple structure and good safety.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows:

[0007] A bulk material grabbing and transporting device, comprising a contraction grabbing device A, a contraction grabbing device B, a first hinged rod, a second hinged rod, a third hinged rod, a fourth hinged rod, a first grabbing plate and a second grabbing plate;

[0008] The first hinge rod, the second hinge rod, the third hinge rod and the fourth hinge rod are parallel to each other, the first hinge rod and the third hinge rod are arranged opposite to each other vertically, and the second hinge rod and the fourth hinge rod are arranged opposite to each other horizontally, forming a diamond arrangement; one end of the first hinge rod, the second hinge rod, the third hinge rod and the fourth hinge rod is defined as end A, and the other end is defined as end B;

[0009] The contraction grabbing device A comprises a first hinge plate A, a second hinge plate A, a third hinge plate A and a fourth hinge plate A; one end of the first hinge plate A is rotatably connected to the A end of the first hinge rod, and the other end is rotatably connected to the A end of the second hinge rod; one end of the second hinge plate A is rotatably connected to the A end of the first hinge rod, and the other end is rotatably connected to the A end of the fourth hinge rod; one end of the third hinge plate A is rotatably connected to the A end of the fourth hinge rod, and the other end is a free end, and the middle part of the third hinge plate A is rotatably connected to the A end of the third hinge rod; one end of the fourth hinge plate A is rotatably connected to the A end of the second hinge rod, and the other end is a free end, and the middle part of the fourth hinge plate A is rotatably connected to the A end of the third hinge rod;

[0010] The contraction grabbing device B comprises a first hinge plate B, a second hinge plate B, a third hinge plate B and a fourth hinge plate B; one end of the first hinge plate B is rotatably connected to the B end of the first hinge rod, and the other end is rotatably connected to the B end of the second hinge rod; one end of the second hinge plate B is rotatably connected to the B end of the first hinge rod, and the other end is rotatably connected to the B end of the fourth hinge rod; one end of the third hinge plate B is rotatably connected to the B end of the fourth hinge rod, and the other end is a free end, and the middle part of the third hinge plate B is rotatably connected to the B end of the third hinge rod; one end of the fourth hinge plate B is rotatably connected to the B end of the second hinge rod, and the other end is a free end, and the middle part of the fourth hinge plate B is rotatably connected to the B end of the third hinge rod;

[0011] The first grab plate and the second grab plate are arranged opposite to each other, and the two ends of the first grab plate are respectively connected to the free end of the third hinge plate A and the free end of the third hinge plate B; the two ends of the second grab plate are respectively connected to the free end of the fourth hinge plate A and the free end of the fourth hinge plate B.

[0012] The first hinged rod and the third hinged rod are arranged opposite to each other up and down, and the second hinged rod and the fourth hinged rod are arranged opposite to each other left and right, forming a diamond arrangement (the connecting line of the ends of the four hinged rods is similar to a diamond shape), that is, viewed from the A end or the B end, the four hinged rods are arranged in a diamond shape.

[0013] The rotation connection in the present application refers to that two parts connected to each other can rotate relative to each other.

[0014] The middle part of the third and fourth hinged plates refers to the middle part of each hinged plate in the length direction, and the length of 1 / 6 to the left and right of the midpoint of each hinged plate is regarded as the middle part.

[0015] When in use, place the block material between the first grab plate and the second grab plate, and slowly lift the first hinged rod upwards. During the upward movement and under the action of gravity, the first grab plate and the second grab plate form a stable clamp for the block material. The first hinged rod continues to move upwards, the block material is separated from the original supporting surface, lifted to a designated position, and then moves downward. When the block material falls on the supporting surface, it continues to move downward, and the interval between the first grab plate and the second grab plate gradually increases, thereby achieving the release of the block material.

[0016] In order to facilitate control and transportation, the block material transportation device further includes a control rod, one end of which is connected to the fourth hinge rod and the other end is a free end. In this way, when the block is transported to a designated position, the operator can hold the free end of the control rod to accurately control the position of the block.

[0017] In order to facilitate the grabbing and improve the grabbing efficiency, two limit posts are provided at the bottom of the side of the control rod (the side of the control rod facing the block), and when the interval between the first connecting plate and the second connecting plate is the largest, the second hinged rod can be movably engaged between the two limit posts. At this time, one end of the control rod is connected to the fourth hinged rod, and the other end points to and exceeds the second hinged rod.

[0018] For the convenience of use, one end of the control rod is rotatably connected to the fourth hinge rod.

[0019] This makes it easier to prepare for the next grabbing after one grabbing is completed. When the block reaches the designated position and falls on the support surface, the block material grabbing device continues to move downward, the interval between the first connecting plate and the second connecting plate gradually increases, and the block is automatically released. When the interval between the first connecting plate and the second connecting plate continues to increase to the maximum, the second hinged rod is movably engaged between the two limit columns to form the limit of the block material grabbing device; the block material grabbing device is removed for the next grabbing. During the removal process, due to the limit of the limit column, the interval between the first connecting plate and the second connecting plate will not be reduced under the action of gravity. In this way, when it reaches the top of the next block to be grabbed, it moves downward and engages the block to be grabbed between the first connecting plate and the second connecting plate. At this time, the control rod is lifted upward to make the second hinged rod detach from the two limit columns, and the first hinged rod is moved upward. Under the action of gravity, the block to be grabbed is stably clamped between the first connecting plate and the second connecting plate, and then lifted upward and transported to the designated location.

[0020] In order to facilitate lifting, the above-mentioned bulk material grabbing and transporting device also includes a hanging plate, the bottom of which is connected to the first hinged rod, and a hanging ring is provided on the hanging plate. In this way, the lifting can be achieved by hooking the hook into the hanging ring. The structure and transportation control of the hook are existing mature technologies and will not be described here.

[0021] In order to improve the running stability, the bottom of the hanging plate is welded to the first hinge rod.

[0022] As a preferred implementation scheme, one end of the first hinged plate A is hinged to the A end of the first hinged rod, and the other end is hinged to the A end of the second hinged rod; one end of the second hinged plate A is hinged to the A end of the first hinged rod, and the other end is hinged to the A end of the fourth hinged rod; one end of the third hinged plate A is hinged to the A end of the fourth hinged rod, and the other end is a free end, and the middle part of the third hinged plate A is hinged to the A end of the third hinged rod; one end of the fourth hinged plate A is hinged to the A end of the second hinged rod, and the other end is a free end, and the middle part of the fourth hinged plate A is hinged to the A end of the third hinged rod. A end of the connecting rod; one end of the first hinged plate B is hinged to the B end of the first hinged rod, and the other end is hinged to the B end of the second hinged rod; one end of the second hinged plate B is hinged to the B end of the first hinged rod, and the other end is hinged to the B end of the fourth hinged rod; one end of the third hinged plate B is hinged to the B end of the fourth hinged rod, and the other end is a free end, and the middle part of the third hinged plate B is hinged to the B end of the third hinged rod; one end of the fourth hinged plate B is hinged to the B end of the second hinged rod, and the other end is a free end, and the middle part of the fourth hinged plate B is hinged to the B end of the third hinged rod.

[0023] The first hinge plate A and the first hinge plate B are arranged opposite and in parallel, the second hinge plate A and the second hinge plate B are arranged opposite and in parallel, the third hinge plate A and the third hinge plate B are arranged opposite and in parallel, and the fourth hinge plate A and the fourth hinge plate B are arranged opposite and in parallel.

[0024] In order to further improve the stability of the device, the free ends of the third hinge plate A, the third hinge plate B, the fourth hinge plate A and the fourth hinge plate B are all provided with connecting feet that are vertically downward; the two ends of the first grab plate are respectively welded to the inner sides of the connecting feet of the third hinge plate A and the third hinge plate B, and the two ends of the second grab plate are respectively welded to the inner sides of the connecting feet of the fourth hinge plate A and the fourth hinge plate B. The direction between the connecting feet facing the third hinge plate and the fourth hinge plate is the inner side, and the side opposite to the inner side is the back side.

[0025] The inner side of the first gripping plate and the inner side of the second gripping plate are parallel to each other; the inner side of the first gripping plate and the inner side of the second gripping plate are both grid-shaped friction surfaces. The direction facing between the first gripping plate and the second gripping plate is the inner side, and the side opposite to the inner side is the back side.

[0026] The technologies not mentioned in this utility model are all referred to the prior art.

[0027] The block material grabbing and transporting device of the utility model can be used for grabbing and stacking block materials such as aluminum alloy and intermediate alloy. The relatively arranged contraction grabbing device A and the contraction grabbing device B ensure the stability of the block material grabbing and transporting, and there is no need to set lifting chains on both sides, thus avoiding the safety hazard caused by the chain being stuck on one side. The utility model has a simple structure, is easy to control and has good stability. Furthermore, through the design of the control rod, the precise control of the grabbing and transporting position is realized, and through the setting of the limiting structure, the grabbing and transporting efficiency is improved and the operation is simplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a bulk material grabbing and transporting device according to Example 1 of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of a bulk material grabbing and transporting device according to Example 2 of the present application;

[0030] Figure 3 This is a schematic diagram of the structure of a bulk material grabbing and transporting device according to Example 3 of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of a bulk material grabbing and transporting device according to Example 4 of the present application;

[0032] In the figure, 1 is the first hinge rod, 2 is the second hinge rod, 3 is the third hinge rod, 4 is the fourth hinge rod, 5 is the first grab plate, 6 is the second grab plate, 7 is the first hinge plate A, 8 is the second hinge plate A, 9 is the third hinge plate A, 10 is the fourth hinge plate A, 11 is the first hinge plate B, 12 is the second hinge plate B, 13 is the third hinge plate B, 14 is the fourth hinge plate B, 15 is the control rod, 151 is the limiting column, 16 is the hanging plate, 161 is the hanging ring, and 17 is the connecting foot. DETAILED DESCRIPTION

[0033] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0034] In this application, directional words such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings or in use, and are only for the convenience of describing the application, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the application.

[0035] Example 1

[0036] like Figure 1As shown, a bulk material grabbing and transporting device comprises a retractable grabbing device A, a retractable grabbing device B, a first hinged rod, a second hinged rod, a third hinged rod, a fourth hinged rod, a first grabbing plate and a second grabbing plate;

[0037] The first hinge rod, the second hinge rod, the third hinge rod and the fourth hinge rod are parallel to each other, the first hinge rod and the third hinge rod are arranged opposite to each other vertically, and the second hinge rod and the fourth hinge rod are arranged opposite to each other horizontally, forming a diamond arrangement; one end of the first hinge rod, the second hinge rod, the third hinge rod and the fourth hinge rod is defined as end A, and the other end is defined as end B;

[0038] The contraction grabbing device A comprises a first hinge plate A, a second hinge plate A, a third hinge plate A and a fourth hinge plate A; one end of the first hinge plate A is rotatably connected to the A end of the first hinge rod, and the other end is rotatably connected to the A end of the second hinge rod; one end of the second hinge plate A is rotatably connected to the A end of the first hinge rod, and the other end is rotatably connected to the A end of the fourth hinge rod; one end of the third hinge plate A is rotatably connected to the A end of the fourth hinge rod, and the other end is a free end, and the middle part of the third hinge plate A is rotatably connected to the A end of the third hinge rod; one end of the fourth hinge plate A is rotatably connected to the A end of the second hinge rod, and the other end is a free end, and the middle part of the fourth hinge plate A is rotatably connected to the A end of the third hinge rod;

[0039] The contraction grabbing device B comprises a first hinge plate B, a second hinge plate B, a third hinge plate B and a fourth hinge plate B; one end of the first hinge plate B is rotatably connected to the B end of the first hinge rod, and the other end is rotatably connected to the B end of the second hinge rod; one end of the second hinge plate B is rotatably connected to the B end of the first hinge rod, and the other end is rotatably connected to the B end of the fourth hinge rod; one end of the third hinge plate B is rotatably connected to the B end of the fourth hinge rod, and the other end is a free end, and the middle part of the third hinge plate B is rotatably connected to the B end of the third hinge rod; one end of the fourth hinge plate B is rotatably connected to the B end of the second hinge rod, and the other end is a free end, and the middle part of the fourth hinge plate B is rotatably connected to the B end of the third hinge rod;

[0040] The first grab plate and the second grab plate are arranged opposite to each other, and the two ends of the first grab plate are respectively connected to the free end of the third hinge plate A and the free end of the third hinge plate B; the two ends of the second grab plate are respectively connected to the free end of the fourth hinge plate A and the free end of the fourth hinge plate B.

[0041] When in use, the block material is placed between the first grab plate and the second grab plate, and the first hinged rod is slowly lifted upward. During the upward movement and under the action of gravity, the first grab plate and the second grab plate form a stable clamp for the block material. The first hinged rod continues to move upward, and the block material is separated from the original support surface, lifted to the designated position, and then moved downward. When the block material falls on the support surface, it continues to move downward, and the interval between the first grab plate and the second grab plate gradually increases, so that the block material is released. Note: The drawings of this application are only schematic diagrams of the structure, and the details not shown in the drawings cannot be a limitation of this application.

[0042] Example 2

[0043] On the basis of Example 1, the following improvements were made: Figure 2 As shown, in order to facilitate control and transportation, the bulk material transportation device further includes a control rod, one end of which is connected to the fourth hinge rod and the other end is a free end. In this way, when the bulk material is transported to the designated position, the operator can hold the free end of the control rod to accurately control the position of the bulk material.

[0044] Example 3

[0045] On the basis of Example 1, the following improvements were made: Figure 3 As shown, in order to facilitate grabbing and improve grabbing efficiency, two limit posts are provided at the bottom of the side of the control rod. When the interval between the first connecting plate and the second connecting plate is the largest, the second hinged rod can be movably engaged between the two limit posts.

[0046] This makes it easier to prepare for the next grabbing after one grabbing is completed. When the block reaches the designated position and falls on the support surface, the block material grabbing device continues to move downward, the interval between the first connecting plate and the second connecting plate gradually increases, and the block is automatically released. When the interval between the first connecting plate and the second connecting plate continues to increase to the maximum, the second hinged rod is movably engaged between the two limit columns to form the limit of the block material grabbing device; the block material grabbing device is removed for the next grabbing. During the removal process, due to the limit of the limit column, the interval between the first connecting plate and the second connecting plate will not be reduced under the action of gravity. In this way, when it reaches the top of the next block to be grabbed, it moves downward and engages the block to be grabbed between the first connecting plate and the second connecting plate. At this time, the control rod is lifted upward to make the second hinged rod detach from the two limit columns, and the first hinged rod is moved upward. Under the action of gravity, the block to be grabbed is stably clamped between the first connecting plate and the second connecting plate, and then lifted upward and transported to the designated location.

[0047] Example 4

[0048] On the basis of Example 3, the following improvements were made: Figure 4As shown, in order to facilitate lifting, the above-mentioned bulk material grabbing and transporting device also includes a hanging plate, the bottom of which is welded to the first hinged rod, and a hanging ring is provided on the hanging plate. In this way, the lifting can be achieved by hooking the hook into the hanging ring. The structure and transportation control of the hook are existing mature technologies and will not be described here.

[0049] Example 5

[0050] On the basis of Example 4, the following improvement is further made: for the convenience of use, one end of the control rod is rotatably connected to the fourth hinge rod.

[0051] Example 6

[0052] On the basis of embodiment 4 or 5, the following improvements are further made: one end of the first hinge plate A is hinged to the A end of the first hinge rod, and the other end is hinged to the A end of the second hinge rod; one end of the second hinge plate A is hinged to the A end of the first hinge rod, and the other end is hinged to the A end of the fourth hinge rod; one end of the third hinge plate A is hinged to the A end of the fourth hinge rod, and the other end is a free end, and the middle part of the third hinge plate A is hinged to the A end of the third hinge rod; one end of the fourth hinge plate A is hinged to the A end of the second hinge rod, and the other end is a free end, and the middle part of the fourth hinge plate A is hinged The first hinge plate A is connected to the A end of the third hinge rod; one end of the first hinge plate B is hinged to the B end of the first hinge rod, and the other end is hinged to the B end of the second hinge rod; one end of the second hinge plate B is hinged to the B end of the first hinge rod, and the other end is hinged to the B end of the fourth hinge rod; one end of the third hinge plate B is hinged to the B end of the fourth hinge rod, and the other end is a free end, and the middle part of the third hinge plate B is hinged to the B end of the third hinge rod; one end of the fourth hinge plate B is hinged to the B end of the second hinge rod, and the other end is a free end, and the middle part of the fourth hinge plate B is hinged to the B end of the third hinge rod. The first hinge plate A and the first hinge plate B are arranged opposite and in parallel, the second hinge plate A and the second hinge plate B are arranged opposite and in parallel, the third hinge plate A and the third hinge plate B are arranged opposite and in parallel, and the fourth hinge plate A and the fourth hinge plate B are arranged opposite and in parallel.

[0053] Example 7

[0054] On the basis of Example 6, the following improvements were further made: Figure 1-4 As shown, in order to further improve the stability of the device, the free ends of the third hinged plate A, the third hinged plate B, the fourth hinged plate A and the fourth hinged plate B are all provided with connecting feet pointing vertically downward; the two ends of the first grab plate are respectively welded to the inner sides of the connecting feet of the third hinged plate A and the third hinged plate B, and the two ends of the second grab plate are respectively welded to the inner sides of the connecting feet of the fourth hinged plate A and the fourth hinged plate B. The inner side of the first grab plate and the inner side of the second grab plate are parallel to each other; the inner side of the first grab plate and the inner side of the second grab plate are both grid-shaped friction surfaces.

[0055] It has been verified in practice that the bulk material grabbing devices in the above-mentioned examples can be used for grabbing and stacking bulk materials such as potassium fluoroaluminate. The stability of the bulk material grabbing is ensured by the relatively arranged retractable grabbing device A and the retractable grabbing device B. There is no need to set lifting chains on both sides, thus avoiding the safety hazard caused by the chain getting stuck on one side. The structure is simple, easy to control and has good stability. Furthermore, through the design of the control rod, precise control of the grabbing position is achieved, and through the setting of the limiting structure, the grabbing efficiency is improved and the operation is simplified.

Claims

1. A bulk material grabbing and transporting device, characterized in that: It comprises a retractable grasping device A, a retractable grasping device B, a first hinged rod (1), a second hinged rod (2), a third hinged rod (3), a fourth hinged rod (4), a first grasping plate (5) and a second grasping plate (6); The first hinge rod (1), the second hinge rod (2), the third hinge rod (3) and the fourth hinge rod (4) are parallel to each other, the first hinge rod (1) and the third hinge rod (3) are arranged opposite to each other vertically, and the second hinge rod (2) and the fourth hinge rod (4) are arranged opposite to each other horizontally, forming a rhombus arrangement; one end of the first hinge rod (1), the second hinge rod (2), the third hinge rod (3) and the fourth hinge rod (4) is defined as end A, and the other end is defined as end B; The retractable grasping device A comprises a first hinge plate A (7), a second hinge plate A (8), a third hinge plate A (9) and a fourth hinge plate A (10); one end of the first hinge plate A (7) is rotatably connected to the A end of the first hinge rod (1), and the other end is rotatably connected to the A end of the second hinge rod (2); one end of the second hinge plate A (8) is rotatably connected to the A end of the first hinge rod (1), and the other end is rotatably connected to the A end of the fourth hinge rod (4); one end of the third hinge plate A (9) is rotatably connected to the A end of the fourth hinge rod (4), and the other end is a free end, and the middle part of the third hinge plate A (9) is rotatably connected to the A end of the third hinge rod (3); one end of the fourth hinge plate A (10) is rotatably connected to the A end of the second hinge rod (2), and the other end is a free end, and the middle part of the fourth hinge plate A (10) is rotatably connected to the A end of the third hinge rod (3); The retractable grasping device B comprises a first hinge plate B (11), a second hinge plate B (12), a third hinge plate B (13) and a fourth hinge plate B (14); one end of the first hinge plate B (11) is rotatably connected to the B end of the first hinge rod (1), and the other end is rotatably connected to the B end of the second hinge rod (2); one end of the second hinge plate B (12) is rotatably connected to the B end of the first hinge rod (1), and the other end is rotatably connected to the B end of the fourth hinge rod (4); one end of the third hinge plate B (13) is rotatably connected to the B end of the fourth hinge rod (4), and the other end is a free end, and the middle part of the third hinge plate B (13) is rotatably connected to the B end of the third hinge rod (3); one end of the fourth hinge plate B (14) is rotatably connected to the B end of the second hinge rod (2), and the other end is a free end, and the middle part of the fourth hinge plate B (14) is rotatably connected to the B end of the third hinge rod (3); The first grab plate (5) and the second grab plate (6) are arranged opposite to each other, and the two ends of the first grab plate (5) are respectively connected to the free end of the third hinge plate A (9) and the free end of the third hinge plate B (13); the two ends of the second grab plate (6) are respectively connected to the free end of the fourth hinge plate A (10) and the free end of the fourth hinge plate B (14).

2. The bulk material grabbing and transporting device according to claim 1, characterized in that: It also comprises a control rod (15), one end of which is connected to the fourth hinge rod (4) and the other end of which is a free end.

3. The bulk material grabbing and transporting device according to claim 2, characterized in that: Two limiting posts (151) are provided at the bottom of the side of the control rod (15); when the interval between the first connecting plate and the second connecting plate is the largest, the second hinge rod (2) can be movably engaged between the two limiting posts (151).

4. The bulk material grabbing and transporting device according to claim 3, characterized in that: One end of the control rod (15) is rotatably connected to the fourth hinge rod (4).

5. The bulk material grabbing and transporting device according to any one of claims 1 to 4, characterized in that: It also comprises a hanging plate (16), the bottom of which is connected to the first hinge rod (1), and a hanging ring (161) is provided on the hanging plate (16).

6. The bulk material grabbing and transporting device according to claim 5, characterized in that: The bottom of the hanging plate (16) is welded to the first hinge rod (1).

7. The bulk material grabbing and transporting device according to any one of claims 1 to 4, characterized in that: One end of the first hinge plate A (7) is hinged to the A end of the first hinge rod (1), and the other end is hinged to the A end of the second hinge rod (2); one end of the second hinge plate A (8) is hinged to the A end of the first hinge rod (1), and the other end is hinged to the A end of the fourth hinge rod (4); one end of the third hinge plate A (9) is hinged to the A end of the fourth hinge rod (4), and the other end is a free end, and the middle part of the third hinge plate A (9) is hinged to the A end of the third hinge rod (3); one end of the fourth hinge plate A (10) is hinged to the A end of the second hinge rod (2), and the other end is a free end, and the middle part of the fourth hinge plate A (10) is hinged to the A end of the third hinge rod (3); One end of the hinged plate B (11) is hinged to the B end of the first hinged rod (1), and the other end is hinged to the B end of the second hinged rod (2); one end of the second hinged plate B (12) is hinged to the B end of the first hinged rod (1), and the other end is hinged to the B end of the fourth hinged rod (4); one end of the third hinged plate B (13) is hinged to the B end of the fourth hinged rod (4), and the other end is a free end, and the middle part of the third hinged plate B (13) is hinged to the B end of the third hinged rod (3); one end of the fourth hinged plate B (14) is hinged to the B end of the second hinged rod (2), and the other end is a free end, and the middle part of the fourth hinged plate B (14) is hinged to the B end of the third hinged rod (3).

8. The bulk material grabbing and transporting device according to any one of claims 1 to 4, characterized in that: The first hinge plate A (7) and the first hinge plate B (11) are arranged opposite to and in parallel, the second hinge plate A (8) and the second hinge plate B (12) are arranged opposite to and in parallel, the third hinge plate A (9) and the third hinge plate B (13) are arranged opposite to and in parallel, and the fourth hinge plate A (10) and the fourth hinge plate B (14) are arranged opposite to and in parallel.

9. The bulk material grabbing and transporting device according to any one of claims 1 to 4, characterized in that: The free ends of the third hinged plate A (9), the third hinged plate B (13), the fourth hinged plate A (10) and the fourth hinged plate B (14) are all provided with connecting feet (17) extending vertically downward; the two ends of the first grab plate (5) are respectively welded to the inner sides of the connecting feet (17) of the third hinged plate A (9) and the connecting feet (17) of the third hinged plate B (13); the two ends of the second grab plate (6) are respectively welded to the inner sides of the connecting feet (17) of the fourth hinged plate A (10) and the connecting feet (17) of the fourth hinged plate B (14).

10. The bulk material grabbing and transporting device according to any one of claims 1 to 4, characterized in that: The inner side of the first gripping plate (5) and the inner side of the second gripping plate (6) are parallel to each other; the inner side of the first gripping plate (5) and the inner side of the second gripping plate (6) are both grid-shaped friction surfaces.

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