Heavy chain replacement device

Abstract

The present invention provides a heavy-duty chain replacement device for replacing the chain within a chain frame, which comprises a mobile trolley, a lifting lead screw, a loading frame, a discharging frame, a driving sprocket, a driving mechanism, a lifting lead screw and a lifting platform; both the loading frame and the discharging frame are arranged above the mobile trolley through the lifting lead screw; the loading frame is of a linear structure, and the outlet of the loading frame contacts one side of the chain frame; the discharging frame has a first discharging frame part and a second discharging frame part connected in an L-shaped structure, the first discharging frame part is located on the upper surface of the chain frame, the lifting platform is arranged above the discharging frame, and the lifting lead screw is arranged between the discharging frame and the lifting platform; the driving sprocket is arranged on the lifting platform, and the output end of the driving mechanism is fixedly connected to the driving sprocket. This device is suitable for the replacement of large-sized and heavy-duty chains, not only with high replacement efficiency, but also capable of reducing operation risks.

Description

Technical Field

[0001] The present invention relates to the technical field of large equipment installation and maintenance, and particularly relates to a heavy chain replacement device. Background Art

[0002] In the process of metallurgical production, with the improvement of production technology, the size and tonnage of metallurgical equipment are getting larger and larger, which increases the difficulty of equipment maintenance. Large chains are one of them. Therefore, it is necessary to design a device to assist maintenance personnel in replacement, improve work efficiency, and reduce operation risks. Summary of the Invention

[0003] The purpose of the present invention is to provide a heavy chain replacement device, which is suitable for replacing large and heavy chains, not only has high replacement efficiency, but also can reduce operation risks.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A heavy chain replacement device for replacing the chain in a chain frame, comprising a moving trolley, a lifting lead screw, a loading frame, a discharging frame, a driving sprocket, a driving mechanism, a lifting lead screw and a lifting platform; the loading frame and the discharging frame are both arranged above the moving trolley through the lifting lead screw, and the lifting lead screw is used to adjust the heights of the loading frame and the discharging frame; the loading frame is of a linear structure, and a new chain is placed in the loading frame, and the outlet of the loading frame is in contact with one side of the chain frame; the discharging frame has a first discharging frame part and a second discharging frame part connected in an L shape, the first discharging frame part is located on the upper surface of the chain frame, the lifting platform is arranged above the discharging frame, the lifting lead screw is arranged between the discharging frame and the lifting platform, and the lifting lead screw is used to adjust the height of the lifting platform. The old chain is placed in the discharging frame and is located below the lifting platform; the driving sprocket is arranged on the lifting platform, the driving sprocket is in transmission cooperation with the old chain, and the output end of the driving mechanism is fixedly connected with the driving sprocket, and the driving mechanism drives the driving sprocket to rotate and then drives the old chain to move.

[0006] Further, in the above heavy-duty chain replacement device, a support roller is further included; the loading frame has a first loading side plate and a second loading side plate arranged in parallel, and there is a distance between the first loading side plate and the second loading side plate. The support roller is rotatably arranged between the first loading side plate and the second loading side plate, and the support roller is located at the lower part of the loading frame. The new chain is placed on the support roller; the axis of the support roller in the loading frame is aligned with the upper surface of the chain frame; both the first unloading frame part and the second unloading frame part have a first unloading side plate and a second unloading side plate arranged in parallel, and there is a distance between the first unloading side plate and the second unloading side plate. The support roller is rotatably arranged between the first unloading side plate and the second unloading side plate, and the support roller is located at the lower part of the unloading frame. The old chain is placed on the support roller.

[0007] Further, in the above heavy-duty chain replacement device, a loading frame arc part is provided at the connection between the loading frame and the chain frame, and an unloading frame arc part is provided on the unloading frame and between the first unloading frame part and the second unloading frame part; the arcs of the loading frame arc part and the unloading frame arc part respectively face the two ends of the chain frame, and the arcs of the loading frame arc part and the unloading frame arc part face away from each other; the loading frame arc part has a first loading arc plate and a second loading arc plate. One end of the first loading arc plate is fixedly connected to the first loading side plate, and the other end of the first loading arc plate is in contact with the chain frame. One end of the second loading arc plate is fixedly connected to the second loading side plate, and the other end of the second loading arc plate is in contact with the chain frame; the unloading frame arc part has a first unloading arc plate and a second unloading arc plate. The first unloading arc plate fixedly connects the first unloading side plates in the first unloading frame part and the second unloading frame part, and the second unloading arc plate fixedly connects the second unloading side plates in the first unloading frame part and the second unloading frame part; preferably, the other ends of the first loading arc plate and the second loading arc plate are both tangent to the chain frame.

[0008] Further, in the above heavy-duty chain replacement device, the loading frame further includes two guide wheels and a driven sprocket; both of the two guide wheels are rotatably arranged in the loading frame arc part, and the two guide wheels are respectively arranged close to the first loading arc plate and the second loading arc plate. The new chain is located between the two guide wheels; the driven sprocket is rotatably arranged between the first loading side plate and the second loading side plate, and the driven sprocket is located between two adjacent support rollers; the driven sprocket is in transmission cooperation with the new chain, and the driven sprocket is located below the new chain.

[0009] Further, in the above-mentioned heavy-duty chain replacement device, the blanking frame further includes an adjusting side guide wheel assembly and a fixed side guide wheel; the adjusting side guide wheel assembly is arranged in the first blanking arc plate, the fixed side guide wheel is rotatably arranged in the second blanking arc plate, and the axis of the fixed side guide wheel is vertically arranged; the first blanking arc plate is located on the outer circle of the second blanking arc plate.

[0010] Further, in the above-mentioned heavy-duty chain replacement device, the adjusting side guide wheel assembly includes an adjusting side guide wheel, a fixed support, an adjusting support and an adjusting screw; an adjusting side guide wheel hole is formed in the first blanking arc plate; the fixed support is fixedly arranged on the outer side of the first blanking arc plate, the fixed support has a flat plate and a vertical plate fixedly connected perpendicularly, one end of the flat plate is fixedly connected perpendicularly to the first blanking arc plate, and the flat plate is arranged close to the adjusting side guide wheel hole; the adjusting support is of a groove structure, one side of the adjusting support is slidably connected with the flat plate, one end of the adjusting screw is fixedly connected with the adjusting support, and the other end of the adjusting screw is threadedly connected with the vertical plate; the adjusting side guide wheel is rotatably arranged in the groove structure, and both the adjusting side guide wheel and the adjusting support pass through the adjusting side guide wheel hole, and the axis of the adjusting side guide wheel is vertically arranged.

[0011] Further, in the above-mentioned heavy-duty chain replacement device, the loading frame further includes a loading bottom plate, and the blanking frame further includes a blanking bottom plate; the loading bottom plate is fixedly arranged between the first loading side plate and the second loading side plate, the loading bottom plate is located at the bottom of the first loading side plate and the second loading side plate, so that the loading frame forms a linear rectangular groove structure, and the loading bottom plate is located below the supporting roller; a driven sprocket hole is formed in the loading bottom plate, the driven sprocket is rotatably arranged on the loading bottom plate, and the driven sprocket passes through the driven sprocket hole; both of the guide wheels are rotatably arranged on the loading bottom plate, and the loading frame is fixedly connected with the lifting lead screw through the loading bottom plate; the blanking bottom plate is fixedly arranged between the first blanking side plate and the second blanking side plate, the loading bottom plate is located at the bottom of the first blanking side plate and the second blanking side plate, so that the blanking frame forms an L-shaped rectangular groove structure, and the blanking bottom plate is located below the supporting roller; the blanking frame is fixedly connected with the lifting lead screw through the blanking bottom plate.

[0012] Further, in the above-mentioned heavy-duty chain replacement device, lifting platforms are provided above both the first blanking frame part and the second blanking frame part. Each lifting platform includes a platform plate, two driving sprocket seats, and a driving sprocket shaft. A driving sprocket hole is formed in the platform plate; both of the two driving sprocket seats are fixedly arranged on the upper surface of the platform plate, and both of the two driving sprocket seats are perpendicular to the platform plate. The two driving sprocket seats are respectively located on both sides of the driving sprocket hole; the driving sprocket is fixedly arranged on the driving sprocket shaft. Two ends of the driving sprocket shaft are respectively rotationally connected to the driving sprocket seats, and the driving sprocket passes through the driving sprocket hole. The output end of the driving mechanism is fixedly connected to the driving sprocket shaft; the lifting platform is fixedly connected to the lifting lead screw through the platform plate.

[0013] Further, in the above-mentioned heavy-duty chain replacement device, the lifting platform further includes guide rods, a first transmission shaft, and a first driving seat. Two lifting lead screws are fixedly connected to each platform plate; fixed ear plates are provided at the upper parts of both the first blanking side plate and the second blanking side plate, and the fixed ear plates are located outside the blanking frame; the first driving seat is fixedly arranged on the upper surface of the fixed ear plate. One end of the lifting lead screw is fixedly connected to the platform plate, and the other end of the lifting lead screw passes through the first driving seat and the fixed ear plate, and the lifting lead screw is in transmission connection with the first driving seat; the two lifting lead screws are on the same side. Two ends of the first transmission shaft are respectively in transmission connection with the first driving seats on the two lifting lead screws. The first transmission shaft rotates to drive the two lifting lead screws to rotate synchronously through the two first driving seats respectively, so that the platform plate moves up and down; one end of the guide rod is fixedly connected to the platform plate, and the other end of the guide rod passes through the fixed ear plate. The guide rod is arranged on the side opposite to the lifting lead screw; preferably, two guide rods are arranged on the platform plate. The two lifting lead screws are on one side of the second blanking arc plate, and the two guide rods are on one side of the first blanking arc plate.

[0014] Further, in the above-mentioned heavy-duty chain replacement device, it further includes a second transmission shaft and a second drive seat. The lifting lead screw includes two feeding frame lifting lead screws and two discharging frame lifting lead screws. The moving trolley includes a vehicle body and traveling wheels. The traveling wheels are arranged at the bottom of the vehicle body. The second drive seat is fixedly arranged on the upper surface of the vehicle body. One end of the feeding frame lifting lead screw is fixedly connected to the bottom of the feeding frame. The other end of the feeding frame lifting lead screw passes through the second drive seat and the upper part of the vehicle body, and the feeding frame lifting lead screw is in transmission connection with the second drive seat. Both ends of the second transmission shaft are in transmission connection with the second drive seats on the two feeding frame lifting lead screws respectively. The second transmission shaft rotates to drive the two feeding frame lifting lead screws to rotate synchronously through the two second drive seats respectively, so as to move the feeding frame up and down. One end of the discharging frame lifting lead screw is fixedly connected to the bottom of the discharging frame. The other end of the discharging frame lifting lead screw passes through the second drive seat and the upper part of the vehicle body, and the discharging frame lifting lead screw is in transmission connection with the second drive seat. Both ends of the second transmission shaft are in transmission connection with the second drive seats on the two discharging frame lifting lead screws respectively. The second transmission shaft rotates to drive the two discharging frame lifting lead screws to rotate synchronously through the two second drive seats respectively, so as to move the discharging frame up and down. Preferably, the number of the traveling wheels is four, and the four traveling wheels are respectively arranged at the four corners of the bottom of the vehicle body.

[0015] Analysis shows that the embodiment of the heavy-duty chain replacement device disclosed in the present invention achieves the following technical effects:

[0016] In this setting, both the loading frame and the unloading frame are arranged above the moving trolley through lifting lead screws. The lifting lead screws not only support the loading frame and the unloading frame, but also can adjust the positional relationship between the loading frame and the unloading frame and the chain frame, facilitating the replacement of the chain. The new chain is placed in the loading frame, and the loading frame is responsible for the replacement and feeding of the new chain. The outlet of the loading frame contacts one side of the chain frame. The unloading frame is responsible for the removal and feeding of the old chain. The first unloading frame part is located on the upper surface of the chain frame. A lifting platform is installed at each end of the unloading frame. The lifting lead screw is arranged between the unloading frame and the lifting platform, and the lifting lead screw is used to adjust the height of the lifting platform. A driving sprocket is installed on the lifting platform, and the driving sprocket is in transmission cooperation with the old chain. The driving sprocket is responsible for the transmission of the chain in the unloading frame. During operation, the old chain is disassembled, the replacement new chain is installed in advance in the loading frame, the old chain is installed in the unloading frame, the device is moved to the chain frame, and through the adjustment of the lifting lead screw, the outlet of the loading frame is made to contact one side of the chain frame, and the first unloading frame part is placed on the upper surface of the chain frame. The two ends of the old chain are respectively connected to the new chain in the loading frame and the old chain in the unloading frame. The driving sprocket is driven to rotate to operate the chain, that is, to move the old chain in the unloading frame, and then drive the new chain in the loading frame to move. New chains are continuously connected on the loading frame, and at the same time, the old chain conveyed from the unloading frame is removed. When the old chain is completely removed, the new chains in the loading frame and the unloading frame are connected to complete the chain replacement. This device is suitable for the replacement of large and heavy chains, not only with high replacement efficiency, but also capable of reducing operation risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0018] Figure 1 is a schematic structural diagram of the present invention in the use state of an embodiment;

[0019] Figure 2 is a front view of the present invention in the use state of an embodiment;

[0020] Figure 3 is a left view of the present invention in the use state of an embodiment;

[0021] Figure 4 is a left view of the present invention in the use state of an embodiment;

[0022] Figure 5 is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 6 is a front view of an embodiment of the present invention;

[0024] Figure 7 Left view of an embodiment of the present invention;

[0025] Figure 8 Left view of an embodiment of the present invention;

[0026] Figure 9 Schematic structural view of the loading frame in an embodiment of the present invention;

[0027] Figure 10 Top view of the loading frame in an embodiment of the present invention;

[0028] Figure 11 Left view of the loading frame in an embodiment of the present invention;

[0029] Figure 12 Rear view of the loading frame in an embodiment of the present invention;

[0030] Figure 13 Schematic structural view of the unloading frame in an embodiment of the present invention;

[0031] Figure 14 Top view of the unloading frame in an embodiment of the present invention;

[0032] Figure 15 Right view of the unloading frame in an embodiment of the present invention;

[0033] Figure 16 Front view of the unloading frame in an embodiment of the present invention.

[0034] Explanation of reference numerals:

[0035] 1 - Mobile trolley, 11 - Vehicle body, 12 - Traveling wheels, 2 - Lifting lead screw, 21 - Second transmission shaft, 22 - Second drive seat, 23 - Feeding frame lifting lead screw, 24 - Discharging frame lifting lead screw, 3 - Feeding frame, 31 - First feeding side plate, 32 - Second feeding side plate, 33 - Feeding frame arc part, 331 - First feeding arc plate, 332 - Second feeding arc plate, 34 - Guide wheels, 35 - Driven sprocket, 36 - Feeding bottom plate, 37 - Driven sprocket hole, 4 - Discharging frame, 41 - First discharging frame part, 42 - Second discharging frame part, 43 - First discharging side plate, 44 - Second discharging side plate, 45 - Discharging frame arc part, 451 - First discharging arc plate, 452 - Second discharging arc plate, 46 - Adjusting side guide wheel assembly, 461 - Adjusting side guide wheel, 462 - Fixed support, 463 - Adjusting support, 464 - Adjusting screw, 47 - Fixed side guide wheel, 48 - Discharging bottom plate, 49 - Fixed ear plate, 5 - Driving sprocket, 6 - Driving mechanism, 7 - Lifting lead screw, 71 - First transmission shaft, 72 - First drive seat, 8 - Lifting platform, 81 - Platform plate, 82 - Driving sprocket seat, 83 - Driving sprocket shaft, 84 - Driving sprocket hole, 85 - Guide rod, 9 - Support roller, 10 - Chain frame. Detailed implementation manners

[0036] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention rather than limitation of the present invention. In fact, those skilled in the art will clearly understand that modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present invention includes such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0037] In the description of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. The terms "connected", "connected to", and "disposed" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component; it can be a wired connection, a radio connection, or a wireless communication signal connection. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] One or more examples of the present invention are shown in the accompanying drawings. The detailed description uses numerical and alphabetical labels to refer to features in the drawings. Similar or like labels in the drawings and the description have been used to refer to similar or like parts of the present invention. As used herein, terms such as "first", "second", "third", and "fourth" are used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of individual components.

[0039] As Figures 1 to 16 shown, according to an embodiment of the present invention, there is provided a heavy-duty chain replacement device for replacing the chain within the chain frame 10, including a moving trolley 1, a lifting screw 2, a loading frame 3, a discharging frame 4, a driving sprocket 5, a driving mechanism 6, a lifting screw 7, and a lifting platform 8; the loading frame 3 and the discharging frame 4 are both arranged above the moving trolley 1 through the lifting screw 2, and the lifting screw 2 is used to adjust the heights of the loading frame 3 and the discharging frame 4; the loading frame 3 is of a linear structure, and the new chain is placed within the loading frame 3, and the outlet of the loading frame 3 is in contact with one side of the chain frame 10; the discharging frame 4 has a first discharging frame portion 41 and a second discharging frame portion 42 connected in an L-shaped structure, the first discharging frame portion 41 is located on the upper surface of the chain frame 10, the lifting platform 8 is arranged above the discharging frame 4, the lifting screw 7 is arranged between the discharging frame 4 and the lifting platform 8, and the lifting screw 7 is used to adjust the height of the lifting platform 8, the old chain is placed within the discharging frame 4, and the old chain is located below the lifting platform 8; the driving sprocket 5 is arranged on the lifting platform 8, the driving sprocket 5 is in driving cooperation with the old chain, and the output end of the driving mechanism 6 is fixedly connected to the driving sprocket 5, and the driving mechanism 6 drives the driving sprocket 5 to rotate and thereby drives the old chain to move.

[0040] In the above embodiments, a lifting lead screw 2 is installed on the top of the mobile trolley 1. The loading frame 3 and the unloading frame 4 are both arranged above the mobile trolley 1 through the lifting lead screw 2. The lifting lead screw 2 not only supports the loading frame 3 and the unloading frame 4, but also can adjust the heights of the loading frame 3 and the unloading frame 4 to control the lifting of the loading frame 3 and the unloading frame 4, so as to adjust the positional relationship between the loading frame 3 and the unloading frame 4 and the chain frame 10, facilitating the replacement of the chain. The loading frame 3 is of a linear structure, and the new chain is placed inside the loading frame 3. The loading frame 3 is responsible for the replacement loading of the new chain. The new chain can be conveyed inside the loading frame 3. The outlet of the loading frame 3 is in contact with one side of the chain frame 10. Here, the outlet of the loading frame 3 refers to the opening where the new chain on the loading frame 3 enters the chain frame 10 from the loading frame 3. The unloading frame 4 is responsible for the removal and unloading of the old chain. The unloading frame 4 has a first unloading frame part 41 and a second unloading frame part 42 connected in an L-shaped structure. The first unloading frame part 41 is the inlet part of the unloading frame 4. Here, the inlet of the unloading frame 4 refers to the opening where the old chain on the unloading frame 4 enters the unloading frame 4 from the chain frame 10. The first unloading frame part 41 is located on the upper surface of the chain frame 10. This is set because when the old chain is removed from the chain frame 10, the chain needs to be kept straight, that is, the chain cannot be twisted. In order to facilitate the smooth conveyance of the chain inside the unloading frame 4, the unloading frame 4 needs to be placed on the surface of the chain frame 10. In this way, the old chain only needs to be lifted at a certain angle and then can be placed inside the unloading frame 4 and then driven by the driving sprocket 5 for conveyance. The lifting platform 8 is arranged above the unloading frame 4. The lifting lead screw 7 is arranged between the unloading frame 4 and the lifting platform 8. The lifting lead screw 7 is used to adjust the height of the lifting platform 8. The lifting lead screw 1 is responsible for the lifting of the lifting platform 8. The old chain is placed inside the unloading frame 4. The old chain can be conveyed inside the unloading frame 4, and the old chain is located below the lifting platform 8. A driving sprocket 5 is installed on the lifting platform 8. The driving sprocket 5 is in transmission cooperation with the old chain, and the output end of the driving mechanism 6 is fixedly connected to the driving sprocket 5. The driving mechanism 6 drives the driving sprocket 5 to rotate and then drives the old chain to move. The driving sprocket 5 is responsible for the transmission of the chain inside the unloading frame 4. Preferably, the driving mechanism 6 is a motor.During operation, disassemble the old chain, install the new chain to be replaced in advance in the loading frame 3, install the old chain in the unloading frame 4, move this device to the chain frame 10, through the adjustment of the lifting screw rod 2, make the outlet of the loading frame 3 contact with one side of the chain frame 10, place the unloading frame 4 on the upper surface of the chain frame 10, connect the two ends of the old chain to the new chain in the loading frame 3 and the old chain in the unloading frame 4 respectively, drive the driving sprocket 5 to rotate to operate the chain, that is, move the old chain in the unloading frame 4, and then drive the new chain in the loading frame 3 to move, continuously connect the new chain on the loading frame 3, and at the same time remove the old chain conveyed from the unloading frame 4. When the old chain is completely removed, connect the new chains in the loading frame 3 and the unloading frame 4 to complete the chain replacement. This device is suitable for the replacement of large and heavy chains, not only with high replacement efficiency, but also capable of reducing operation risks.

[0041] Preferably, in order to stably convey the chain in the loading frame 3 and the unloading frame 4, as Figures 1 to 16 shown, in an embodiment of the present invention, it further includes a supporting roller 9; the loading frame 3 has a first loading side plate 31 and a second loading side plate 32 arranged in parallel, and there is a distance between the first loading side plate 31 and the second loading side plate 32. The supporting roller 9 is rotatably arranged between the first loading side plate 31 and the second loading side plate 32, and the supporting roller 9 is located at the lower part of the loading frame 3. The new chain is placed on the supporting roller 9; the axis of the supporting roller 9 in the loading frame 3 is aligned with the upper surface of the chain frame 10; both the first unloading frame part 41 and the second unloading frame part 42 have a first unloading side plate 43 and a second unloading side plate 44 arranged in parallel, and there is a distance between the first unloading side plate 43 and the second unloading side plate 44. The supporting roller 9 is rotatably arranged between the first unloading side plate 43 and the second unloading side plate 44, and the supporting roller 9 is located at the lower part of the unloading frame 4. The old chain is placed on the supporting roller 9. The new chain is placed on the supporting roller 9 and is conveyed between the first loading side plate 31 and the second loading side plate 32. The axis of the supporting roller 9 in the loading frame 3 is aligned with the upper surface of the chain frame 10, which is convenient for the conveyance of the chain. The old chain is placed on the supporting roller 9 and is conveyed between the first unloading side plate 43 and the second unloading side plate 44. The supporting roller 9 can ensure the stable conveyance of the chain in the loading frame 3 and the unloading frame 4.

[0042] Preferably, in order to facilitate the turning of the chain in the loading frame 3 and the unloading frame 4, as Figures 1 to 8As shown, in an embodiment of the present invention, at the connection with the chain frame 10 on the loading frame 3, there is a loading frame arc portion 33, and between the first unloading frame portion 41 and the second unloading frame portion 42 on the unloading frame 4, there is an unloading frame arc portion 45; the arcs of the loading frame arc portion 33 and the unloading frame arc portion 45 respectively face the two ends of the chain frame 10, and the arcs of the loading frame arc portion 33 and the unloading frame arc portion 45 face away from each other; the loading frame arc portion 33 has a first loading arc plate 331 and a second loading arc plate 332, one end of the first loading arc plate 331 is fixedly connected to the first loading side plate 31, the other end of the first loading arc plate 331 contacts the chain frame 10, one end of the second loading arc plate 332 is fixedly connected to the second loading side plate 32, and the other end of the second loading arc plate 332 contacts the chain frame 10; the unloading frame arc portion 45 has a first unloading arc plate 451 and a second unloading arc plate 452, the first unloading arc plate 451 fixedly connects the first unloading side plate 43 in the first unloading frame portion 41 and the second unloading frame portion 42, and the second unloading arc plate 452 fixedly connects the second unloading side plate 44 in the first unloading frame portion 41 and the second unloading frame portion 42; preferably, the other ends of the first loading arc plate 331 and the second loading arc plate 332 are both tangent to the chain frame 10, which is more convenient for the chain to turn between the loading frame 3 and the chain frame 10. By providing the loading frame arc portion 33 and the unloading frame arc portion 45, it is convenient for the chain to turn within the loading frame 3 and the unloading frame 4.

[0043] Preferably, in order to guide the chain in the loading frame 3 and make the chain stably transported in the loading frame 3, as Figures 1 to 12 shown, in an embodiment of the present invention, the loading frame 3 further includes two guide wheels 34 and a driven sprocket 35; both of the two guide wheels 34 are rotatably arranged within the loading frame arc portion 33, and the two guide wheels 34 are respectively arranged close to the first loading arc plate 331 and the second loading arc plate 332, and the new chain is located between the two guide wheels 34; the driven sprocket 35 is rotatably arranged between the first loading side plate 31 and the second loading side plate 32, and the driven sprocket 35 is located between two adjacent support rollers 9; the driven sprocket 35 is in transmission cooperation with the new chain, and the driven sprocket 35 is located below the new chain. Guide wheels 34 are installed in the loading frame arc portion 33 for guiding the chain. A driven sprocket 35 is installed in the loading frame 3, which can cooperate with the guide wheels 34 to guide the chain and ensure the stability of the chain during loading.

[0044] Preferably, in order to improve the meshing accuracy between the chain in the unloading frame 4 and the driving sprocket 5 and ensure the stable transportation of the chain in the unloading frame 4, as Figures 13 to 16As shown, in an embodiment of the present invention, the blanking frame 4 further includes an adjustable side guide wheel assembly 46 and a fixed side guide wheel 47; the adjustable side guide wheel assembly 46 is disposed in the first blanking arc plate 451, the fixed side guide wheel 47 is rotatably disposed in the second blanking arc plate 452, and the axis of the fixed side guide wheel 47 is vertically arranged. The first blanking arc plate 451 is located on the outer ring of the second blanking arc plate 452. The adjustable side guide wheel assembly 46 and the fixed side guide wheel 47 are respectively arranged on the outer ring and the inner ring of the arc portion 45 of the blanking frame. This setting facilitates the operation of the adjustable side guide wheel assembly 46. By providing the adjustable side guide wheel assembly 46 and the fixed side guide wheel 47, the meshing accuracy between the chain and the driving sprocket 5 can be improved, ensuring the stable conveyance of the chain within the blanking frame 4.

[0045] Preferably, in order to ensure that the adjustable side guide wheel assembly 46 can better improve the meshing accuracy between the chain and the driving sprocket 5 within the blanking frame 4, as Figures 13 to 16 shown, in an embodiment of the present invention, the adjustable side guide wheel assembly 46 includes an adjustable side guide wheel 461, a fixed support 462, an adjustment support 463, and an adjustment screw 464. An adjustable side guide wheel hole is formed in the first blanking arc plate 451; the fixed support 462 is fixedly arranged on the outer side of the first blanking arc plate 451. The fixed support 462 has a flat plate and a vertical plate fixedly connected perpendicularly. One end of the flat plate is fixedly connected perpendicularly to the first blanking arc plate 451, and the flat plate is arranged close to the adjustable side guide wheel hole; the adjustment support 463 is a groove structure, which facilitates the installation of the adjustable side guide wheel 461. One side of the adjustment support 463 is slidably connected to the flat plate. One end of the adjustment screw 464 is fixedly connected to the adjustment support 463, and the other end of the adjustment screw 464 is threadedly connected to the vertical plate; the adjustable side guide wheel 461 is rotatably disposed in the groove structure, and both the adjustable side guide wheel 461 and the adjustment support 463 pass through the adjustable side guide wheel hole. The axis of the adjustable side guide wheel 461 is vertically arranged. The axis of the adjustable side guide wheel 461 is parallel to the axis of the fixed side guide wheel 47, which can better conduct guiding and at the same time improve the meshing accuracy between the chain and the driving sprocket 5 within the blanking frame 4. By adjusting the screw 464, the adjustment support 463 can be driven to slide on the fixed support 462, thereby adjusting the distance between the adjustable side guide wheel 461 and the chain, facilitating the adjustment of the meshing accuracy between the chain and the driving sprocket 5.

[0046] Preferably, in order to better enable the chain to be stably conveyed within the loading frame 3 and the blanking frame 4, as Figures 1 to 16As shown, in an embodiment of the present invention, the loading frame 3 further includes a loading bottom plate 36, and the unloading frame 4 further includes an unloading bottom plate 48; the loading bottom plate 36 is fixedly arranged between the first loading side plate 31 and the second loading side plate 32, and the loading bottom plate 36 is located at the bottom of the first loading side plate 31 and the second loading side plate 32, so that the loading frame 3 forms a linear rectangular groove structure, and the loading bottom plate 36 is located below the support roller 9; a driven sprocket hole 37 is formed in the loading bottom plate 36, the driven sprocket 35 is rotatably arranged on the loading bottom plate 36, and the driven sprocket 35 passes through the driven sprocket hole 37; both guide wheels 34 are rotatably arranged on the loading bottom plate 36, and the loading frame 3 is fixedly connected to the lifting lead screw 2 through the loading bottom plate 36; the unloading bottom plate 48 is fixedly arranged between the first unloading side plate 43 and the second unloading side plate 44, the loading bottom plate 48 is located at the bottom of the first unloading side plate 43 and the second unloading side plate 44, so that the unloading frame 48 forms an L-shaped rectangular groove structure, and the unloading bottom plate 48 is located below the support roller 9; the unloading frame 4 is fixedly connected to the lifting lead screw 2 through the unloading bottom plate 48. By arranging the loading bottom plate 36, the loading frame 3 forms a linear rectangular groove structure to ensure the stable conveyance of the chain within the loading frame 3. By arranging the unloading bottom plate 48, the unloading frame 48 forms an L-shaped rectangular groove structure to ensure the stable conveyance of the chain within the unloading frame 48.

[0047] Preferably, in order to ensure the stable operation of the driving sprocket 5 on the lifting platform 8, as Figures 1 to 3 shown, in an embodiment of the present invention, a lifting platform 8 is arranged above both the first unloading frame part 41 and the second unloading frame part 42. Each lifting platform 8 includes a platform plate 81, two driving sprocket seats 82 and a driving sprocket shaft 83. A driving sprocket hole 84 is formed in the platform plate 81; both driving sprocket seats 82 are fixedly arranged on the upper surface of the platform plate 81, and both driving sprocket seats 82 are perpendicular to the platform plate 81. The two driving sprocket seats 82 are respectively located on both sides of the driving sprocket hole 84; the driving sprocket 5 is fixedly arranged on the driving sprocket shaft 83. The two ends of the driving sprocket shaft 83 are respectively rotatably connected to the driving sprocket seats 82, and the driving sprocket 5 passes through the driving sprocket hole 84. The output end of the driving mechanism is fixedly connected to the driving sprocket shaft 83; the lifting platform 8 is fixedly connected to the lifting lead screw 7 through the platform plate 81. One lifting platform 8 is installed at each end of the unloading frame 4, that is, lifting platforms 8 are arranged above both the first unloading frame part 41 and the second unloading frame part 42. The lifting platform 8 of this structure can ensure the stable operation of the driving sprocket 5.

[0048] Preferably, in order to ensure the stable up-and-down operation of the lifting platform 8, as Figures 13 to 16As shown, in an embodiment of the present invention, the lifting platform 8 further includes guide rods 85, a first transmission shaft 71, and a first drive seat 72. Two lifting lead screws 7 are fixedly connected to each platform plate 81. Fixed ear plates 49 are provided at the upper parts of the first blanking side plate 43 and the second blanking side plate 44, and the fixed ear plates 49 are located outside the blanking frame 4. The first drive seat 72 is fixedly arranged on the upper surface of the fixed ear plate 49. One end of the lifting lead screw 7 is fixedly connected to the platform plate 81, and the other end of the lifting lead screw 7 passes through the first drive seat 72 and the fixed ear plate 49, and the lifting lead screw 7 is in transmission connection with the first drive seat 72. The two lifting lead screws 7 are located on the same side. The two ends of the first transmission shaft 71 are respectively in transmission connection with the first drive seats 72 on the two lifting lead screws 7. The first transmission shaft 71 rotates to drive the two lifting lead screws 7 to rotate synchronously through the two first drive seats 72 respectively, so as to move the platform plate 81 up and down. One end of the guide rod 85 is fixedly connected to the platform plate 81, and the other end of the guide rod 85 passes through the fixed ear plate 49. The guide rod 85 is arranged on the side opposite to the lifting lead screw 7. Preferably, two guide rods 85 are provided on the platform plate 81. The two lifting lead screws 7 are located on one side of the second blanking arc plate 452, and the two guide rods 85 are located on one side of the first blanking arc plate 451. Fixed ear plates 49 are fixedly arranged at the upper parts of the first blanking side plate 43 and the second blanking side plate 44, and the fixed ear plates 49 are located outside the blanking frame 4. The fixed ear plates 49 are used to install the first drive seat 72 and the guide rod 85. The platform plate 81 is arranged above the blanking frame 4 through the guide rod 85 and the lifting lead screw 7. Among them, the number of the lifting lead screw 7 and the guide rod 85 is two. The two lifting lead screws 7 are located on one side of the second blanking arc plate 452. The two ends of the first transmission shaft 71 are respectively in transmission connection with the first drive seats 72 on the two lifting lead screws 7. The first transmission shaft 71 rotates to drive the two lifting lead screws 7 to rotate synchronously through the two first drive seats 72 respectively, so as to move the platform plate 81 up and down, so as to adjust the height of the platform plate 81, and further adjust the distance between the driving sprocket 5 and the chain, and improve the matching accuracy between the driving sprocket 5 and the chain. The two guide rods 85 are located on one side of the first blanking arc plate 451. A guide hole is provided on the fixed ear plate 49 on one side of the first blanking arc plate 451. One end of the guide rod 85 is fixedly connected to the platform plate 81, and the other end of the guide rod 85 passes through the guide hole on the fixed ear plate 49. The guide rod 85 plays a guiding role and can make the platform plate 81 move up and down stably.

[0049] Preferably, in order to ensure the stable up and down operation of the feeding frame 3 and the blanking frame 4, as Figures 1 to 8As shown, in an embodiment of the present invention, it further includes a second transmission shaft 21 and a second drive seat 22. The lifting screw 2 includes two feeding frame lifting screws 23 and two discharging frame lifting screws 24. The mobile trolley 1 includes a vehicle body 11 and traveling wheels 12; the traveling wheels 12 are arranged at the bottom of the vehicle body 11, and the second drive seat 22 is fixedly arranged on the upper surface of the vehicle body 11; one end of the feeding frame lifting screw 23 is fixedly connected to the bottom of the feeding frame 3, and the other end of the feeding frame lifting screw 23 passes through the second drive seat 22 and the upper part of the vehicle body 11, and the feeding frame lifting screw 23 is in transmission connection with the second drive seat 22. The two ends of the second transmission shaft 21 are respectively in transmission connection with the second drive seats 22 on the two feeding frame lifting screws 23. The second transmission shaft 21 rotates to drive the two feeding frame lifting screws 23 to rotate synchronously through the two second drive seats 22 respectively, so as to move the feeding frame 3 up and down; one end of the discharging frame lifting screw 24 is fixedly connected to the bottom of the discharging frame 4, and the other end of the discharging frame lifting screw 24 passes through the second drive seat 22 and the upper part of the vehicle body 11, and the discharging frame lifting screw 24 is in transmission connection with the second drive seat 22. The two ends of the second transmission shaft 21 are respectively in transmission connection with the second drive seats 22 on the two discharging frame lifting screws 24. The second transmission shaft 21 rotates to drive the two discharging frame lifting screws 24 to rotate synchronously through the two second drive seats 22 respectively, so as to move the discharging frame 4 up and down; preferably, the number of the traveling wheels 12 is four, and the four traveling wheels 12 are respectively arranged at the four corners of the bottom of the vehicle body 11. The mobile trolley 1 includes a vehicle body 11 and traveling wheels 12, and the four traveling wheels 12 are respectively arranged at the four corners of the bottom of the vehicle body 11, which is convenient for the movement of the device. The two feeding frame lifting screws 23 are used to adjust the height of the feeding frame 3. The second drive seat 22 is fixedly arranged on the upper surface of the vehicle body 11. One end of the feeding frame lifting screw 23 is fixedly connected to the bottom of the feeding frame 3, and the other end of the feeding frame lifting screw 23 passes through the second drive seat 22 and the upper part of the vehicle body 11, and the feeding frame lifting screw 23 is in transmission connection with the second drive seat 22. The two ends of the second transmission shaft 21 are respectively in transmission connection with the second drive seats 22 on the two feeding frame lifting screws 23. The second transmission shaft 21 rotates to drive the feeding frame lifting screw 23 to move up and down through the second drive seat 22, thereby adjusting the height of the feeding frame 3 and adjusting the positional relationship between the outlet of the feeding frame 3 and the chain frame 10, which is convenient for chain conveying.The two blanking frame lifting lead screws 24 are used to adjust the height of the blanking frame 4. One end of the blanking frame lifting lead screw 24 is fixedly connected to the bottom of the blanking frame 4. The other end of the blanking frame lifting lead screw 24 passes through the upper part of the second drive seat 22 and the vehicle body 11, and the blanking frame lifting lead screw 24 is in transmission connection with the second drive seat 22. Both ends of the second transmission shaft 21 are in transmission connection with the second drive seats 22 on the two blanking frame lifting lead screws 24. The second transmission shaft 21 rotates to drive the blanking frame lifting lead screw 24 to move up and down through the second drive seat 22, thereby adjusting the height of the blanking frame 4 and adjusting the positional relationship between the inlet of the blanking frame 4 and the chain frame 10 to facilitate chain conveying.

[0050] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: Both the loading frame 3 and the blanking frame 4 are arranged above the mobile trolley 1 through the lifting lead screws 2. The lifting lead screws 2 not only support the loading frame 3 and the blanking frame 4, but also can adjust the positional relationship between the loading frame 3 and the blanking frame 4 and the chain frame 10 to facilitate chain replacement. The new chain is placed in the loading frame 3, and the loading frame 3 is responsible for loading the new chain for replacement. The outlet of the loading frame 3 is in contact with one side of the chain frame 10. The blanking frame 4 is responsible for removing and blanking the old chain. The first blanking frame part 41 is located on the upper surface of the chain frame 10. A lifting platform 8 is installed at each end of the blanking frame 4. The lifting lead screw 7 is arranged between the blanking frame 4 and the lifting platform 8. The lifting lead screw 7 is used to adjust the height of the lifting platform 8. A driving sprocket 5 is installed on the lifting platform 8. The driving sprocket 5 is in transmission cooperation with the old chain. The driving sprocket 5 is responsible for the transmission of the chain in the blanking frame 4. During operation, the old chain is disassembled, the new chain to be replaced is installed in advance in the loading frame 3, the old chain is installed in the blanking frame 4, the device is moved to the chain frame 10, and through the adjustment of the lifting lead screw 2, the outlet of the loading frame 3 is brought into contact with one side of the chain frame 10, and the first blanking frame part 41 is placed on the upper surface of the chain frame 10. Both ends of the old chain are respectively connected to the new chain in the loading frame 3 and the old chain in the blanking frame 4. The driving sprocket 5 is driven to rotate to operate the chain, that is, to move the old chain in the blanking frame 4, thereby driving the new chain in the loading frame 3 to move. New chains are continuously connected to the loading frame 3, and at the same time, the old chain conveyed from the blanking frame 4 is removed. When the old chain is completely removed, the new chains in the loading frame 3 and the blanking frame 4 are connected to complete the chain replacement. This device is suitable for the replacement of large and heavy chains, not only has a high replacement efficiency, but also can reduce the operation risk.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heavy-duty chain replacement device for replacing the chain within a chain frame, characterized in that, it includes a mobile trolley, a lifting screw rod, a loading frame, a discharging frame, a driving sprocket, a driving mechanism, a lifting screw rod and a lifting platform; both the loading frame and the discharging frame are arranged above the mobile trolley through the lifting screw rod, and the lifting screw rod is used to adjust the heights of the loading frame and the discharging frame; the loading frame is of a linear structure, a new chain is placed within the loading frame, and the outlet of the loading frame contacts one side of the chain frame; the discharging frame has a first discharging frame part and a second discharging frame part connected in an L-shaped structure. The first discharging frame part is located on the upper surface of the chain frame. The lifting platform is arranged above the discharging frame. The lifting screw rod is arranged between the discharging frame and the lifting platform. The lifting screw rod is used to adjust the height of the lifting platform. An old chain is placed within the discharging frame, and the old chain is located below the lifting platform; the driving sprocket is arranged on the lifting platform, the driving sprocket is in transmission cooperation with the old chain, the output end of the driving mechanism is fixedly connected to the driving sprocket, and the driving mechanism drives the driving sprocket to rotate and thereby drives the old chain to move; the heavy-duty chain replacement device further includes a support roller. The loading frame has a first loading side plate and a second loading side plate arranged in parallel, and there is a distance between the first loading side plate and the second loading side plate. The support roller is rotatably arranged between the first loading side plate and the second loading side plate, and the support roller is located at the lower part of the loading frame. The new chain is placed on the support roller; the axis of the support roller within the loading frame is aligned with the upper surface of the chain frame; both the first discharging frame part and the second discharging frame part have a first discharging side plate and a second discharging side plate arranged in parallel, and there is a distance between the first discharging side plate and the second discharging side plate. The support roller is rotatably arranged between the first discharging side plate and the second discharging side plate, and the support roller is located at the lower part of the discharging frame. The old chain is placed on the support roller; lifting platforms are arranged above both the first discharging frame part and the second discharging frame part. Each lifting platform includes a platform plate, two driving sprocket seats and a driving sprocket shaft. An opening for the driving sprocket is provided on the platform plate; both of the two driving sprocket seats are fixedly arranged on the upper surface of the platform plate, and both of the two driving sprocket seats are perpendicular to the platform plate. The two driving sprocket seats are respectively located on both sides of the opening for the driving sprocket; the driving sprocket is fixedly arranged on the driving sprocket shaft. The two ends of the driving sprocket shaft are respectively rotatably connected to the driving sprocket seats, and the driving sprocket passes through the opening for the driving sprocket. The output end of the driving mechanism is fixedly connected to the driving sprocket shaft; the lifting platform is fixedly connected to the lifting screw rod through the platform plate.

2. The heavy-duty chain replacement device according to claim 1, characterized in that, On the feeding frame and at the connection with the chain frame, there is a feeding frame arc portion, and on the discharging frame and between the first discharging frame portion and the second discharging frame portion, there is a discharging frame arc portion; The arcs of the feeding frame arc portion and the discharging frame arc portion respectively face the two ends of the chain frame, and the arcs of the feeding frame arc portion and the discharging frame arc portion face away from each other; The feeding frame arc portion has a first feeding arc plate and a second feeding arc plate. One end of the first feeding arc plate is fixedly connected to the first feeding side plate, and the other end of the first feeding arc plate contacts the chain frame. One end of the second feeding arc plate is fixedly connected to the second feeding side plate, and the other end of the second feeding arc plate contacts the chain frame; The discharging frame arc portion has a first discharging arc plate and a second discharging arc plate. The first discharging arc plate fixedly connects the first discharging side plate in the first discharging frame portion and the second discharging frame portion, and the second discharging arc plate fixedly connects the second discharging side plate in the first discharging frame portion and the second discharging frame portion.

3. The heavy chain replacement device according to claim 2, characterized in that The other ends of the first feeding arc plate and the second feeding arc plate are both tangent to the chain frame.

4. The heavy chain replacement device according to claim 2, characterized in that The feeding frame further includes two guide wheels and a driven sprocket; Both of the two guide wheels are rotatably arranged inside the feeding frame arc portion, and the two guide wheels are respectively arranged close to the first feeding arc plate and the second feeding arc plate, and the new chain is located between the two guide wheels; The driven sprocket is rotatably arranged between the first feeding side plate and the second feeding side plate, and the driven sprocket is located between two adjacent support rollers; The driven sprocket is in transmission cooperation with the new chain, and the driven sprocket is located below the new chain.

5. The heavy chain replacement device according to claim 2, characterized in that The discharging frame further includes an adjustable side guide wheel assembly and a fixed side guide wheel; The adjustable side guide wheel assembly is arranged in the first discharging arc plate, the fixed side guide wheel is rotatably arranged in the second discharging arc plate, and the axis of the fixed side guide wheel is vertically arranged; The first discharging arc plate is located on the outer circle of the second discharging arc plate.

6. The heavy chain replacement device according to claim 5, characterized in that The adjustable side guide wheel assembly includes an adjustable side guide wheel, a fixed support, an adjustable support and an adjustment screw, and an adjustable side guide wheel hole is formed in the first discharging arc plate; The fixed support is fixedly arranged on the outer side of the first discharging arc plate. The fixed support has a flat plate and a vertical plate fixedly connected perpendicularly. One end of the flat plate is perpendicularly fixedly connected to the first discharging arc plate, and the flat plate is close to the adjustable side guide wheel hole; The adjusting support is of a groove structure. One side of the adjusting support is slidably connected to the flat plate. One end of the adjusting screw is fixedly connected to the adjusting support, and the other end of the adjusting screw is threadedly connected to the vertical plate; The adjusting side guide wheel is rotatably arranged in the groove structure, and both the adjusting side guide wheel and the adjusting support pass through the adjusting side guide wheel hole, and the axis of the adjusting side guide wheel is vertically arranged.

7. The heavy chain replacement device according to claim 4, characterized in that The loading frame further includes a loading bottom plate, and the unloading frame further includes an unloading bottom plate; The loading bottom plate is fixedly arranged between the first loading side plate and the second loading side plate. The loading bottom plate is located at the bottom of the first loading side plate and the second loading side plate, so that the loading frame forms a linear rectangular groove structure, and the loading bottom plate is located below the supporting roller; A driven sprocket hole is formed in the loading bottom plate. The driven sprocket is rotatably arranged on the loading bottom plate, and the driven sprocket passes through the driven sprocket hole; Both of the guide wheels are rotatably arranged on the loading bottom plate, and the loading frame is fixedly connected to the lifting lead screw through the loading bottom plate; The unloading bottom plate is fixedly arranged between the first unloading side plate and the second unloading side plate. The loading bottom plate is located at the bottom of the first unloading side plate and the second unloading side plate, so that the unloading frame forms an L-shaped rectangular groove structure, and the unloading bottom plate is located below the supporting roller; The unloading frame is fixedly connected to the lifting lead screw through the unloading bottom plate.

8. The heavy chain replacement device according to claim 2, characterized in that The lifting platform further includes guide rods, a first transmission shaft and a first driving seat. Each platform plate is fixedly connected with two lifting lead screws; Fixed ear plates are arranged on the upper parts of both the first unloading side plate and the second unloading side plate, and the fixed ear plates are located outside the unloading frame; The first driving seat is fixedly arranged on the upper surface of the fixed ear plate. One end of the lifting lead screw is fixedly connected to the platform plate, and the other end of the lifting lead screw passes through the first driving seat and the fixed ear plate, and the lifting lead screw is in transmission connection with the first driving seat; The two lifting lead screws are located on the same side. The two ends of the first transmission shaft are respectively in transmission connection with the first driving seats on the two lifting lead screws. The first transmission shaft rotates to drive the two lifting lead screws to rotate synchronously through the two first driving seats respectively, so that the platform plate moves up and down; One end of the guide rod is fixedly connected to the platform plate, and the other end of the guide rod passes through the fixed ear plate. The guide rod is arranged on the side opposite to the lifting lead screw.

9. The heavy chain replacement device according to claim 8, characterized in that Two guide rods are arranged on the platform plate. The two lifting lead screws are located on one side of the second unloading arc plate, and the two guide rods are located on one side of the first unloading arc plate.

10. The heavy chain replacement device according to claim 1, characterized in that It further includes a second transmission shaft and a second drive seat. The lifting lead screw includes two feeding frame lifting lead screws and two discharging frame lifting lead screws. The mobile trolley includes a vehicle body and traveling wheels. The traveling wheels are arranged at the bottom of the vehicle body, and the second drive seat is fixedly arranged on the upper surface of the vehicle body. One end of the feeding frame lifting lead screw is fixedly connected to the bottom of the feeding frame. The other end of the feeding frame lifting lead screw passes through the second drive seat and the upper part of the vehicle body, and the feeding frame lifting lead screw is in transmission connection with the second drive seat. Both ends of the second transmission shaft are respectively in transmission connection with the second drive seats on the two feeding frame lifting lead screws. The second transmission shaft rotates to drive the two feeding frame lifting lead screws to rotate synchronously through the two second drive seats respectively, so as to move the feeding frame up and down. One end of the discharging frame lifting lead screw is fixedly connected to the bottom of the discharging frame. The other end of the discharging frame lifting lead screw passes through the second drive seat and the upper part of the vehicle body, and the discharging frame lifting lead screw is in transmission connection with the second drive seat. Both ends of the second transmission shaft are respectively in transmission connection with the second drive seats on the two discharging frame lifting lead screws. The second transmission shaft rotates to drive the two discharging frame lifting lead screws to rotate synchronously through the two second drive seats respectively, so as to move the discharging frame up and down.

11. The heavy chain replacement device according to claim 10, characterized in that the number of the traveling wheels is four, and the four traveling wheels are respectively arranged at four corners of the bottom of the vehicle body.

Images