Material lifting and pouring device

Abstract

The invention discloses a material lifting and pouring device, and relates to the technical field of material lifting equipment, in particular to a material lifting and pouring device which comprises a hopper, a point A, a point B and a point C exist in the hopper, the point C is located at the gravity center position of the hopper, and the point A and the point B are located on the two sides of a plane formed by the point C and the Y axis respectively; according to the material lifting and pouring device, a force arm exists between the force bearing point of the hopper and the gravity center of the hopper, so that the hopper can generate overturning torque, the fixed guide wheel is arranged at the proper height, the torque for restraining overturning is provided for the hopper, the torque provided by the fixed guide wheel is close to zero along with ascending of the hopper, and therefore the material lifting and pouring effect is achieved. When the hopper rotates, the hopper can be overturned, namely the hopper can be automatically overturned at the preset position and can move in the vertical direction, so that the overall occupied space of equipment is reduced, the structure of the equipment is simplified, and maintenance is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of material lifting equipment, and more specifically, to a material lifting and dumping device. Background Art

[0002] In the fields of mechanical engineering, conveying equipment and gravity utilization technology, the lifting and dumping of materials are common process flows. Traditional material conveying methods mainly rely on motor drive and are achieved through mechanical devices such as belts, chains, and hydraulic systems. However, these methods have problems such as high energy consumption, complex structure, and high maintenance costs.

[0003] In the existing technology, there are some material conveying equipment that utilizes the force of gravity, such as gravity belt conveyors, gravity roller conveyors, etc. These equipments are mainly driven by the gravity of the material itself, and can achieve a certain degree of energy saving.

[0004] Existing gravity material conveying equipment has the following problems when handling heavy materials: first, these devices often require a large tilt angle, resulting in bulky size and large space occupation, and are not suitable for occasions with limited space; second, existing gravity material conveying equipment usually requires complex mechanical structures to control the rise and rotation of materials, which not only increases the complexity of the equipment, but also increases the manufacturing and maintenance costs of the equipment.

[0005] In summary, how to solve the problems of gravity material conveying equipment, such as large space occupation, complex structure, and difficult maintenance, is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a material lifting and unloading device, which enables the bucket to generate a tipping torque by creating a force arm between the force point of the bucket and its own center of gravity, and provides the bucket with a torque to inhibit tipping by arranging fixed guide wheels at a suitable height. As the bucket rises, the torque provided by the fixed guide wheels approaches zero, and the bucket can tip over, that is, the bucket can automatically tip over at a predetermined position, and the bucket can move in a vertical direction, thereby helping to reduce the overall space occupancy of the equipment, and helping to simplify the equipment structure for easy maintenance.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A material lifting and dumping device, comprising:

[0009] A hopper, wherein there are points A, B and C in the hopper, wherein point C is located at the center of gravity of the hopper, and points A and B are located on both sides of a plane formed by point C and the Y axis, respectively;

[0010] A lifting frame, wherein the lifting frame is provided with a moving end M moving along the X-axis direction, and the moving end M is rotatably hinged with the point A along the Y-axis direction;

[0011] A support frame, wherein the support frame is provided with a moving end N that moves along the Z-axis direction, the moving end N is rotatably hinged with the point B along the Y-axis direction, and a driving mechanism that drives the lifting frame to move along the Z-axis direction is provided inside the support frame;

[0012] A fixed guide wheel is installed to rotate relative to the support frame along the Y axis, and the fixed guide wheel is in rolling contact with the hopper, and the contact point is point D;

[0013] Wherein, when the hopper is in a low position, the vertical height of the point B is smaller than the vertical height of the point D, the X-axis, the Y-axis and the Z-axis are perpendicular to each other, and the Z-axis is in a vertical direction.

[0014] Preferably, when the hopper is in a low position, the vertical height of point A is smaller than the vertical height of point B.

[0015] Preferably, the horizontal distance between the point A and the point C is L1, the horizontal distance between the point B and the point C is L2, and L1 is smaller than L2.

[0016] Preferably, the driving mechanism includes a sprocket, a main chain, a counterweight and a motor. The sprocket is rotatably installed at a high position of the support frame. The motor is used to drive the sprocket to rotate. The main chain bypasses the sprocket, and both ends are fixedly connected to the lifting frame and the counterweight respectively.

[0017] Preferably, the sprocket comprises a first sprocket, a second sprocket and a third sprocket, the first sprocket and the second sprocket are coaxially rotatably mounted, the rotary axes of the second sprocket and the third sprocket are arranged in parallel, a fourth sprocket is arranged at the output shaft end of the motor, and a transmission chain is arranged between the fourth sprocket and the first sprocket;

[0018] The main chain passes around the second sprocket and the third sprocket in sequence.

[0019] Preferably, a first Z-direction guide rail is provided in the support frame, and the counterweight is slidably mounted on the first Z-direction guide rail;

[0020] The center point of the second sprocket overlaps with the projection of the main chain connection point on the lifting frame on the horizontal plane, and the center point of the third sprocket overlaps with the projection of the main chain connection point on the main chain and the counterweight on the horizontal plane.

[0021] Preferably, the moving end M is a third guide wheel, the third guide wheel and the hopper are rotatably mounted along the Y-axis direction, and a double-layer X-direction guide rail is provided in the lifting frame, and the third guide wheel is rollingly arranged in the double-layer X-direction guide rail;

[0022] The moving end N is a fourth guide wheel, and the fourth guide wheel and the hopper are rotatably installed along the Y-axis direction. A double-layer fourth Z-direction guide rail is arranged in the support frame, and the fourth guide wheel is rollingly arranged in the double-layer fourth Z-direction guide rail.

[0023] Preferably, a guide portion is provided in the lifting frame, a Z-direction rail is provided in the supporting frame, and the guide portion and the Z-direction rail are installed for relative movement along the Z-axis direction.

[0024] Preferably, the guide portion comprises at least two groups of first guide wheels and two groups of second guide wheels;

[0025] The first guide wheels are rotatably mounted with the lifting frame along the Y-axis direction, and the rotation axes of the two sets of the first guide wheels do not overlap;

[0026] The second guide wheel is rotatably mounted with the lifting frame along the X-axis direction;

[0027] The support frame is provided with a second Z-guide rail and a third Z-guide rail, the second Z-guide rail is a double-layer guide rail, the first guide wheel is rollingly arranged in the double-layer second Z-guide rail, the second guide wheel is rollingly installed with the third Z-guide rail, and the contact surfaces of the two groups of the second guide wheels and the third Z-guide rail are not coplanar.

[0028] Preferably, a support rod with adjustable height along the Z direction is provided in the support frame, and the fixed guide wheel is provided at the top end of the support rod.

[0029] Compared with the prior art, the material lifting and dumping device provided by the present invention has at least the following beneficial effects:

[0030] 1. By setting a mobile terminal M at point A, and the mobile terminal M and the lifting frame are installed to move relative to each other along the X-axis, when the lifting frame rises, an upward pulling force can be generated on the bucket, and the action point is point A, and points A and B are located on both sides of the vertical plane where the center of gravity C of the bucket is located. Therefore, the pulling force at point A will generate a torque rotating around point B, and at this time, the fixed guide wheel can support the bucket at point D, generating a torque that inhibits rotation around point B, which offsets the torque generated by the pulling force at point A, thereby ensuring that the bucket can move along the predetermined estimated direction; because the pulling force at point A and the supporting force at point D both generate rotational torques, the direction of the force at point A is not limited, and it is only necessary to ensure that the center of gravity point C is not in the direction of the pulling force at point A. After designing point A at the eccentric position of the bucket, the movement trajectory of the bucket can be designed as a vertical trajectory, thereby reducing the overall space occupation of the equipment.

[0031] 2. As the hopper is rising, point B gradually approaches point D. When the arm of force between point D and point B is reduced to the set value, the flipping torque of the support force at point D will be less than the flipping torque of the pulling force at point A, and the hopper will flip around point B. As the mobile end M can move along the X-axis, the arm of force between point A and point B will change continuously during the flipping process of the hopper, and at the end of the flipping, the arm of force will gradually decrease, thereby ensuring the smoothness of the hopper flipping process. With the help of the displacement capacity of the mobile end M in the X-axis direction, the hopper can obtain a larger flipping angle, so that the material in the hopper can be fully dumped. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0033] Figure 1 This is a structural schematic diagram of the material lifting and dumping device provided by the present invention;

[0034] Figure 2 This is a front view of the material lifting and dumping device provided by the present invention;

[0035] Figure 3 It is a side view of the material lifting and dumping device provided by the present invention;

[0036] Figure 4 A distribution diagram of points A, B, C and D on the hopper provided by the present invention;

[0037] Figure 5 This is a schematic diagram of the first stage of hopper overturning provided by the present invention;

[0038] Figure 6 This is a schematic diagram of the second stage of the hopper flipping provided by the present invention;

[0039] Figure 7 This is a schematic diagram of the third stage of hopper flipping provided by the present invention;

[0040] Figure 8 This is a schematic diagram of the fourth stage of hopper overturning provided by the present invention.

[0041] In the figure:

[0042] 1. Support frame; 11. Motor; 12. First sprocket; 13. Second sprocket; 14. Third sprocket; 15. Counterweight; 16. First Z-guide rail; 17. Second Z-guide rail; 18. Third Z-guide rail; 19. Fourth Z-guide rail;

[0043] 2. Lifting frame; 21. First guide wheel; 22. Second guide wheel; 23. X-guide rail;

[0044] 3. Hopper; 31. Third guide wheel; 32. Fourth guide wheel;

[0045] 4. Main chain;

[0046] 51. Fixed guide wheel; 52. Support rod. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The core of the present invention is to provide a material lifting and unloading device, which enables the bucket to generate a tipping torque by creating a force arm between the force point of the bucket and its own center of gravity, and provides the bucket with a torque to inhibit tipping by arranging fixed guide wheels at a suitable height. As the bucket rises, the torque provided by the fixed guide wheels approaches zero, and the bucket can tip over, that is, the bucket can automatically tip over at a predetermined position, and the bucket can move in a vertical direction, thereby helping to reduce the overall space occupancy of the equipment, and helping to simplify the equipment structure for easy maintenance.

[0049] Please refer to Figure 1 , Figure 2 and Figure 4 , a material lifting and dumping device, comprising:

[0050] Hopper 3, there are point A, point B and point C in hopper 3, point C is at the center of gravity of hopper 3, and point A and point B are respectively on both sides of the plane formed by point C and the Y axis;

[0051] The lifting frame 2 is provided with a moving end M moving along the X-axis direction, and the moving end M is hingedly connected to the point A along the Y-axis direction;

[0052] Support frame 1, support frame 1 is provided with a moving end N moving along the Z-axis direction, the moving end N is hingedly connected to point B along the Y-axis direction, and a driving mechanism for driving the lifting frame 2 to move along the Z-axis direction is provided in the support frame 1;

[0053] A fixed guide wheel 51 is installed to rotate relative to the support frame 1 along the Y axis, and the fixed guide wheel 51 is in rolling contact with the hopper 3, and the contact point is point D;

[0054] When the hopper 3 is at a low position, the vertical height of point B is less than the vertical height of point D, the X-axis, the Y-axis and the Z-axis are perpendicular to each other, and the Z-axis is in the vertical direction.

[0055] like Figure 4 As shown in the figure, point A and point B on the hopper 3 are arranged away from the center of gravity point C of the hopper 3, and the projections of point A and point B on the X-axis are respectively located on both sides of the projection of point C on the X-axis. Therefore, when point A generates an upward pulling force F1, point A generates a clockwise torsional torque around point B on the hopper 3. , and the gravity G at the center of gravity C produces a counterclockwise torque around point B on the hopper 3 At the same time, the fixed guide wheel 51 rolls in contact with the hopper 3, generating a supporting force F2 on the hopper 3 and a counterclockwise torque around point B on the hopper 3. ,in is the arm length from F1 to point B, L2 is the arm length from G to point B, and L3 is the arm length from F2 to point B;

[0056] when When the hopper 3 is lifted, L3 will shrink and F2 will increase, which ensures that the hopper 3 does not turn over. During the lifting process of the hopper 3, F1, G, L1 and L2 will not change. When the height of point B is the same as that of point D, L3 shrinks to zero, so T3=0. , so the hopper 3 occurs along point B in sequence as follows Figure 5 , Figure 6 , Figure 7 and Figure 8 The order shown is clockwise flipped, and the flipping torque doing work during the flipping process is , and F1 and G do not change during the flipping process, while L1 and L2 gradually decrease at the end of the flipping, so that the hopper 3 can stop smoothly at the end of the flipping, ensuring the smoothness of the overall operation of the equipment.

[0057] and Figure 1 , Figure 2 and Figure 3 As shown, a lifting frame 2 capable of moving along the Z axis is integrated in the support frame 1, and a mobile terminal M capable of moving along the X axis is arranged in the lifting frame 2, and the mobile terminal M is hinged with the hopper 3 at point A, so that the action point of F1 moves along the X axis during the rising process of the hopper 3, which meets the requirement of the change of the length of the F1 lever arm, and because the lifting frame 2 only needs to move along the Z axis, it can reduce the overall occupation of the equipment in the horizontal space, which is conducive to the use of narrow space;

[0058] Moreover, the structures of the lifting frame 2, the hopper 3 and their connection positions are relatively simple, which is convenient for production and maintenance and can reduce the use cost.

[0059] In some embodiments, when the hopper 3 is in a low position, the vertical height of point A is less than the vertical height of point B.

[0060] like Figure 4 As shown, the initial height of point A is lower than point B. When point A rotates around point B, the length change of the force arm L1+L2 of F1 first increases and then decreases, that is, the change trend of the torque T1 is first increased and then decreased. Therefore, the rotation speed of the hopper 3 during overturning first increases and then decreases, which ensures the smooth start and smooth stop of the overturning of the hopper 3, ensures the smooth operation of the overall equipment, and helps to reduce working noise.

[0061] At the same time, making the initial height of point A lower than point B can reduce the movement displacement of point A along the Z axis during the flipping process of the hopper 3, under the premise of flipping at the same angle, thereby reducing the displacement of the mobile end M, reducing the work done by friction, reducing equipment wear, and improving the service life of the equipment.

[0062] In some embodiments, the horizontal distance between point A and point C is L1, the horizontal distance between point B and point C is L2, and L1 is smaller than L2.

[0063] like Figure 4 As shown in the figure, since the directions of the forces of F1 and G are both vertical, the directions of the force arms of F1 and G are both horizontal. is the arm length of F1, L2 is the arm length of G;

[0064] like Figure 4 As shown, when the hopper 3 does not rotate, the torque at point B needs to be balanced, that is, , after derivation, it is Therefore, when other values ​​remain unchanged, the smaller L1 is, the smaller F2 is, that is, the smaller the support force that the fixed guide wheel 51 needs to provide for the hopper 3 is, that is, the load-bearing force of the fixed guide wheel 51 during the rising process of the hopper 3 is reduced, thereby reducing the friction resistance between the hopper 3 and the fixed guide wheel 51, thereby reducing the work done by the friction resistance, reducing equipment wear, and extending the service life of the equipment.

[0065] In some embodiments, the driving mechanism includes a sprocket, a main chain 4, a counterweight 15 and a motor 11. The sprocket is rotatably installed at a high position of the support frame 1. The motor 11 is used to drive the sprocket to rotate. The main chain 4 bypasses the sprocket, and the two ends are fixedly connected to the lifting frame 2 and the counterweight 15 respectively.

[0066] like Figure 1 , Figure 2 and Figure 3 As shown, a counterweight 15 is added, which makes the weight of the counterweight 15 slightly smaller than the sum of the weights of the lifting frame 2 and the empty hopper 3, thereby balancing the forces at both ends of the main chain 4, thereby reducing the workload of the motor 11 and reducing the energy consumption of the equipment.

[0067] In some embodiments, the weight of the counterweight 15 is designed to be close to the weight of the lifting frame 2 and the half-loaded hopper 3, so that when the hopper 3 is fully loaded and rising, the actual load of the motor 11 is only half of the weight of the cargo in the hopper 3, and when the empty hopper 3 is descending, the load of the motor 11 is also half of the weight of the cargo when the hopper 3 is fully loaded. Therefore, the motor 11 can achieve a constant output, avoid excessive load on the motor 11, and extend the service life of the motor 11.

[0068] In some embodiments, the sprocket includes a first sprocket 12, a second sprocket 13 and a third sprocket 14, the first sprocket 12 and the second sprocket 13 are coaxially rotatably mounted, the rotary axes of the second sprocket 13 and the third sprocket 14 are arranged in parallel, a fourth sprocket is disposed at the output shaft end of the motor 11, and a transmission chain is disposed between the fourth sprocket and the first sprocket 12;

[0069] The main chain 4 passes around the second sprocket 13 and the third sprocket 14 in sequence.

[0070] The structural design of the sprocket and the chain is adopted for power transmission, which effectively avoids sliding between the main chain 4 and the sprocket, and effectively improves the power transmission efficiency.

[0071] In some embodiments, a first Z-guide rail 16 is disposed in the support frame 1, and the counterweight 15 is slidably mounted on the first Z-guide rail 16;

[0072] The projections of the center point of the second sprocket 13 and the main chain connection point on the lifting frame 2 on the horizontal plane overlap, and the projections of the center point of the third sprocket 14 and the main chain connection point on the main chain 4 and the counterweight 15 on the horizontal plane overlap.

[0073] like Figure 2 As shown, a first Z-guide rail 16 is provided in the support frame 1 to limit the movement trajectory of the counterweight 15, and to define the connection positions of the second sprocket 13, the third sprocket 14 and the end points of the main chain 4, so that the portion between the second sprocket 13, the third sprocket 14 and the end points of the main chain 4 can be close to a vertical state and can move along a specific trajectory. During the process, the main chain 4 will not tilt to avoid interference with other components.

[0074] In some embodiments, the moving end M is a third guide wheel 31, the third guide wheel 31 and the hopper 3 are rotatably mounted along the Y-axis direction, and a double-layer X-direction guide rail 23 is provided in the lifting frame 2, and the third guide wheel 31 is rollingly arranged in the double-layer X-direction guide rail 23;

[0075] The mobile end N is the fourth guide wheel 32 , which is rotatably installed with the hopper 3 along the Y-axis direction, and a double-layer fourth Z-direction guide rail 19 is provided in the support frame 1 , in which the fourth guide wheel 32 is rollingly arranged.

[0076] The guide wheel is used as the moving end, and the double-layer guide rail is used as the guide rail of the guide wheel, which can ensure that the guide wheel moves accurately along the predetermined trajectory, and the rolling friction replaces the sliding friction, thereby reducing the friction force and thus reducing the wear of the equipment;

[0077] At the same time, during the rising process of the hopper 3, the direction of its movement trajectory and the direction of the gravity of the goods are both vertical, so the gravity has little effect on the friction generated between the hopper 3 and the lifting frame 2 and its guide rail, which helps to reduce the loss of equipment.

[0078] In some embodiments, a guide portion is disposed in the lifting frame 2, and a Z-direction rail is disposed in the support frame 1. The guide portion and the Z-direction rail are installed for relative movement along the Z-axis direction.

[0079] A guide portion and a Z-direction rail are provided between the lifting frame 2 and the support frame 1 to guide the movement trajectory of the lifting frame 2 in the support frame 1 and ensure the stability of its movement.

[0080] In some embodiments, the guide portion includes at least two sets of first guide wheels 21 and two sets of second guide wheels 22;

[0081] The first guide wheels 21 are rotatably mounted with the lifting frame 2 along the Y-axis direction, and the rotation axes of the two sets of first guide wheels 21 do not overlap;

[0082] The second guide wheel 22 is rotatably mounted with the lifting frame 2 along the X-axis direction;

[0083] A second Z guide rail 17 and a third Z guide rail 18 are arranged in the support frame 1. The second Z guide rail 17 is a double-layer guide rail. The first guide wheel 21 is rollingly arranged in the double-layer second Z guide rail 17. The second guide wheel 22 is rollingly installed with the third Z guide rail 18, and the contact surfaces of the two sets of second guide wheels 22 and the third Z guide rail 18 are not coplanar.

[0084] like Figure 1 , Figure 2 and Figure 3 As shown, first guide wheels 21 are arranged on both sides of the lifting frame 2, and at least two sets of first guide wheels 21 are arranged on each side. The two sets of guide wheels are simultaneously rolled in the double-layer second Z-direction guide rail 17, so that the lifting frame 2 can only move along the Z axis, and is restricted from moving along the X axis and flipping along the Y axis;

[0085] At the same time, second guide wheels 22 are respectively arranged at the four corners or at least two diagonal parts of the lifting frame 2, and the second guide wheels 22 are in rolling contact with the third Z-direction guide rail 18, and there are multiple contact surfaces between the multiple second guide wheels 22 and the third Z-direction guide rail 18, and at least two contact surfaces are not coplanar, thereby limiting the rotation of the lifting frame 2 around the Z-axis and the X-axis, thereby ensuring the movement stability of the lifting frame 2.

[0086] In some embodiments, a support rod 52 with adjustable height along the Z direction is disposed in the support frame 1 , and a fixed guide wheel 51 is disposed at the top end of the support rod 52 .

[0087] like Figure 2 As shown, the fixed guide wheel 51 is installed on the top of the support rod 52. When the vertical height of the fourth guide wheel 32 at point B is greater than or equal to the fixed guide wheel 51, the height of point B is greater than or equal to the height of point D. At this time, the hopper 3 flips over. Therefore, adjusting the installation height of the fixed guide wheel 51 means adjusting the height of point D, thereby adjusting the flipping height of the hopper 3. Therefore, in actual application, the height of the support rod 52 can be adjusted according to the height of the subsequent equipment feed port, that is, adjusting the height of the fixed guide wheel 51, so as to complete the adjustment of the flipping height of the hopper 3, so that the equipment can be suitable for on-site work requirements.

[0088] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0089] The material lifting and dumping device provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A material lifting and dumping device, characterized in that: include: A hopper (3), wherein point A, point B and point C exist in the hopper (3), point C is located at the center of gravity of the hopper (3), and point A and point B are respectively located on both sides of a plane formed by point C and the Y axis; A lifting frame (2), the lifting frame (2) being provided with a movable end M that moves along the X-axis direction, the movable end M being rotatably hinged to the point A along the Y-axis direction; A support frame (1), the support frame (1) being provided with a movable end N that moves along the Z-axis direction, the movable end N being rotatably hinged with the point B along the Y-axis direction, and a driving mechanism that drives the lifting frame (2) to move along the Z-axis direction being provided inside the support frame (1); A fixed guide wheel (51) is mounted to rotate relative to the support frame (1) along the Y axis, the fixed guide wheel (51) is in rolling contact with the hopper (3), and the contact point is point D; When the hopper (3) is in a low position, the vertical height of point B is smaller than the vertical height of point D, the X-axis, the Y-axis and the Z-axis are perpendicular to each other, and the Z-axis is in a vertical direction.

2. The material lifting and dumping device according to claim 1, characterized in that: When the hopper (3) is in a low position, the vertical height of point A is smaller than the vertical height of point B.

3. The material lifting and dumping device according to claim 1, characterized in that: The horizontal distance between the point A and the point C is L1, and the horizontal distance between the point B and the point C is L2, and L1 is smaller than L2.

4. The material lifting and dumping device according to claim 1, characterized in that: The driving mechanism comprises a sprocket, a main chain (4), a counterweight (15) and a motor (11); the sprocket is rotatably mounted at a high position of the support frame (1); the motor (11) is used to drive the sprocket to rotate; the main chain (4) passes around the sprocket, and its two ends are fixedly connected to the lifting frame (2) and the counterweight (15), respectively.

5. The material lifting and dumping device according to claim 4, characterized in that: The sprockets comprise a first sprocket (12), a second sprocket (13) and a third sprocket (14); the first sprocket (12) and the second sprocket (13) are coaxially rotatably mounted; the rotary axes of the second sprocket (13) and the third sprocket (14) are arranged in parallel; a fourth sprocket is arranged at the output shaft end of the motor (11); a transmission chain is arranged between the fourth sprocket and the first sprocket (12); The main chain (4) passes around the second sprocket (13) and the third sprocket (14) in sequence.

6. The material lifting and dumping device according to claim 5, characterized in that: A first Z-direction guide rail (16) is provided in the support frame (1), and the counterweight (15) is slidably mounted on the first Z-direction guide rail (16); The projections of the center point of the second sprocket (13) and the main chain connection point on the lifting frame (2) on the horizontal plane overlap, and the projections of the center point of the third sprocket (14) and the main chain connection point on the main chain (4) and the counterweight (15) on the horizontal plane overlap.

7. The material lifting and dumping device according to claim 1, characterized in that: The mobile end M is a third guide wheel (31), the third guide wheel (31) and the hopper (3) are rotatably mounted along the Y-axis direction, and a double-layer X-guide rail (23) is provided in the lifting frame (2), and the third guide wheel (31) is rollingly arranged in the double-layer X-guide rail (23); The mobile end N is a fourth guide wheel (32), the fourth guide wheel (32) and the hopper (3) are rotatably mounted along the Y-axis direction, and a double-layer fourth Z-direction guide rail (19) is provided in the support frame (1), and the fourth guide wheel (32) is rollingly arranged in the double-layer fourth Z-direction guide rail (19).

8. The material lifting and dumping device according to claim 1, characterized in that: A guide portion is provided in the lifting frame (2), a Z-direction rail is provided in the support frame (1), and the guide portion and the Z-direction rail are installed to move relative to each other along the Z-axis direction.

9. The material lifting and dumping device according to claim 8, characterized in that: The guide portion comprises at least two groups of first guide wheels (21) and two groups of second guide wheels (22); The first guide wheels (21) are rotatably mounted with the lifting frame (2) along the Y-axis direction, and the rotation axes of the two sets of the first guide wheels (21) do not overlap; The second guide wheel (22) is rotatably mounted with the lifting frame (2) along the X-axis direction; The support frame (1) is provided with a second Z-direction guide rail (17) and a third Z-direction guide rail (18); the second Z-direction guide rail (17) is a double-layer guide rail; the first guide wheel (21) is rollably arranged in the double-layer second Z-direction guide rail (17); the second guide wheel (22) is rollably mounted on the third Z-direction guide rail (18); and the contact surfaces of the two groups of the second guide wheels (22) and the third Z-direction guide rail (18) are not coplanar.

10. The material lifting and dumping device according to any one of claims 1 to 9, characterized in that: A support rod (52) whose height is adjustable along the Z direction is arranged in the support frame (1), and the fixed guide wheel (51) is arranged at the top end of the support rod (52).

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