Lifting device and steel ladle sand adding system
By adopting a combined design of rolling rollers and guide components in the lifting device, the problems of large volume of the lifting equipment and chain chain are solved, and the lifting device is miniaturized and stable, and is suitable for ladle sanding operations in high temperature environments.
Patent Information
- Application Number
- CN202422137448.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The lifting chain with large lifting equipment and rolled winding is prone to chaining, which is more obvious when used in high temperature environments.
The combined design of the winding roller and the guide assembly is adopted, including the winding roller, the first guide assembly and the second guide assembly. The winding roller is used to wind the chain and use the coordination of the guide screw and the roller to achieve neat and smooth tiling of the chain to avoid the phenomenon of chain clamping.
The volume of the lifting device is reduced, the chain is blocked during the winding process is avoided, and the stability and safety of lifting are improved.
Smart Images
Figure CN223292206U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cargo lifting equipment, in particular to a lifting device and a ladle sand adding system. Background Art
[0002] In the field of cargo lifting, cranes, winches and other lifting equipment are often used. The lifting equipment is installed on a crane, one end of the rope is wrapped around the lifting equipment, and the other end is connected to the cargo on the ground. The cargo is lifted by the lifting equipment under the winding action of the rope, and then the cargo is lifted by the lifting equipment under the movement of the crane. For example, in the hot repair operation of a ladle, drainage sand needs to be poured into the ladle. At this time, a lifting equipment is needed to lift the sand adding bucket containing drainage sand. Since the temperature at the ladle is relatively high, the height of the lifting equipment needs to be raised, and a longer lifting chain needs to be used. When winding the lifting chain, the lifting equipment needs to use a winding drum with a larger circumferential area to wind up the lifting chain, which makes the overall volume of the lifting equipment larger, and the lifting chain wound by the winding drum is too messy, and it is easy for the chain to get stuck on the winding drum. In view of this, the present utility model is proposed. Utility Model Content
[0003] In order to solve the problems that the lifting equipment is large in size and the winding lifting chain is prone to chain jamming, the utility model provides a lifting device and a ladle sand adding system.
[0004] In order to solve the above technical problems, the utility model provides a lifting device for lifting goods installed on a high-altitude mounting bracket. The lifting device includes a winding assembly, a first guide assembly and a second guide assembly. The winding assembly includes a winding roller, a chain and a winding bracket. The winding bracket is fixed to the mounting bracket. The winding roller is rotatably connected to the winding bracket to wind up the chain.
[0005] The first guide assembly includes a first roller, a connecting shaft and a first bracket, the first bracket is rotatably connected to the mounting bracket via the connecting shaft, and the first roller is rotatably connected to the first bracket;
[0006] The second guide assembly includes a second roller, a second bracket and a guide screw. Both ends of the guide screw are rotatably connected to the winding bracket, and the direction of the guide screw is consistent with the direction of the winding roller. The second bracket is threadedly connected to the guide screw so as to drive the second bracket to translate under the rotation of the guide screw. The second roller is rotatably connected to the second bracket.
[0007] One end of the chain is wound on the winding roller, and the other end passes through the second roller and the first roller in sequence and is connected to the goods.
[0008] In an embodiment of the present invention, the winding assembly also includes a winding drive and a winding transmission. The winding drive is installed on the winding bracket and connected to the winding roller. One end of the winding transmission is connected to the winding roller, and the other end is connected to the guide screw to drive the guide screw to rotate along with the winding roller.
[0009] In an embodiment of the present invention, a connecting flange and an axis are provided on the winding roller, the connecting flange is fixed to both sides of the winding roller to fix the axis, the winding drive member is connected to one end of the axis, and the winding transmission member is connected to the other end of the axis.
[0010] In an embodiment of the present utility model, the first guide assembly also includes a connecting bracket and a positioning cylinder. The connecting bracket is fixed on the mounting bracket. The connecting shaft is rotatably connected to the connecting bracket so that the first bracket rotates relative to the mounting bracket. The positioning cylinder is located directly below the first roller and is connected to the connecting bracket so that the chain can pass through the positioning cylinder.
[0011] In an embodiment of the present invention, the second guide assembly further comprises a guide light rod, both ends of which are fixedly connected to both ends of the winding bracket, and the second bracket passes through the guide light rod and is slidably connected to the guide light rod.
[0012] In an embodiment of the present invention, the winding drive component includes a motor, a reducer and a coupling. The reducer is fixed on the winding bracket and fixedly connected to the motor. The two ends of the coupling are respectively connected to the reducer and the shaft.
[0013] In an embodiment of the present invention, the winding transmission member includes a driving sprocket, a driven sprocket and a driving chain. The driving sprocket is fixed on the axis, the driven sprocket is fixed on the guide screw, and the driving chain is engaged with the driving sprocket and the driven sprocket at the same time.
[0014] In an embodiment of the present invention, a first limiting wheel is rotatably connected to the first bracket, and the first limiting wheel is located above the first roller to limit the chain between the first roller and the first limiting wheel;
[0015] In an embodiment of the present invention, a second limiting wheel is rotatably connected to the second bracket, and the second limiting wheel is located above the second roller to limit the chain between the second roller and the second limiting wheel.
[0016] In an embodiment of the present invention, two groups of winding assemblies, first guide assemblies and second guide assemblies are each provided. The two groups of winding assemblies are provided side by side, the two groups of first guide assemblies are provided side by side, and the two groups of second guide assemblies are provided side by side.
[0017] In order to solve the above technical problems, the utility model provides a ladle sand adding system, which includes a sports car, a cantilever, a sports car driving part and the above-mentioned lifting device. The cantilever includes a fixedly connected cantilever bracket and a column. The sports car is slidably connected to the cantilever bracket for connection to the sports car driving part. The lifting device is fixed to the sports car to move synchronously with the sports car and lift the sand adding bucket.
[0018] Compared with the prior art, the beneficial effects of the present invention are:
[0019] By winding up the chain with a winding roller, the circumferential size of the winding drum can be reduced compared to the method of winding up the chain with a winding disk in the prior art, thereby making the volume of the lifting device smaller. At the same time, the first guide component and the second guide component guide the chain, so that the second guide component drives the chain to move back and forth along the guide screw, and cooperates with the first guide component to drive the chain to swing, so that the chain is neatly laid flat on the winding roller, avoiding the chain getting stuck on the winding roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the lifting device provided by an embodiment of the utility model;
[0022] Figure 2 yes Figure 1 A magnified view of point A in the figure;
[0023] Figure 3 yes Figure 1 Enlarged view of point B in FIG.
[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the ladle sand adding system provided by an embodiment of the utility model;
[0025] Figure 5 yes Figure 4 Enlarged view of point C in the figure.
[0026] Description of Reference Numerals
[0027] 1. Lifting device; 2. Ladle sand adding system; 11. Winding assembly; 12. First guide assembly; 13. Second guide assembly; 21. Carriage; 22. Cantilever bracket; 23. Column; 24. Carriage drive; 25. Sand adding bucket; 111. Winding roller; 112. Chain; 113. Winding bracket; 114. Winding drive; 115. Winding transmission; 121. First roller; 122. Connecting shaft; 123. First bracket; 124. Connecting bracket; 125. Positioning cylinder; 126. First limiting wheel; 131. Second roller; 132. Second bracket; 133. Guide wire rod; 134. Guide light rod; 135. Second limiting wheel. DETAILED DESCRIPTION
[0028] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.
[0029] See also Figure 1-Figure 3 , Figure 1 This is a schematic diagram of the three-dimensional structure of the lifting device provided by an embodiment of the utility model; Figure 2 yes Figure 1 A magnified view of point A in the figure; Figure 3 yes Figure 1 The lifting device 1 of the present invention is used for lifting goods installed on a high-altitude mounting bracket. The lifting device 1 includes a winding assembly 11, a first guide assembly 12 and a second guide assembly 13, wherein:
[0030] The winding assembly 11 includes a winding roller 111, a chain 112 and a winding bracket 113. The winding bracket 113 is fixed to the mounting bracket. The winding roller 111 is rotatably connected to the winding bracket 113 to wind up the chain 112.
[0031] The first guide assembly 12 includes a first roller 121, a connecting shaft 122 and a first bracket 123. The first bracket 123 is rotatably connected to the mounting bracket via the connecting shaft 122. The first roller 121 is rotatably connected to the first bracket 123.
[0032] The second guide assembly 13 includes a second roller 131, a second bracket 132, and a guide screw 133. Both ends of the guide screw 133 are rotatably connected to the winding bracket 113, and the direction of the guide screw 133 is consistent with the direction of the winding roller 111. The second bracket 132 is threadedly connected to the guide screw 133 so that the rotation of the guide screw 133 drives the second bracket 132 to move horizontally. The second roller 131 is rotatably connected to the second bracket 132.
[0033] One end of the chain 112 is wound on the winding roller 111, and the other end passes through the second roller 131 and the first roller 121 in sequence and is connected to the cargo. When the cargo is lifted, the winding roller 111 is rotated to raise or lower the height of the chain 112, thereby adjusting the height of the cargo. Subsequently, the position of the lifting device 1 on the mounting bracket is moved to realize the transfer of the cargo.
[0034] like Figure 2 As shown, while the winding roller 111 is rotated, the guide wire rod 133 is rotated to make the second bracket 132 translate along the guide wire rod 133, so that the chain 112 wound up by the winding roller 111 can be neatly laid flat on the winding roller 111. That is, when the second bracket 132 translates from left to right along the guide wire rod 133, the chain 112 follows the second roller 131 to move to the right, thereby making the chain 112 wound up by the winding roller 111 lay flat to the right. When the second bracket 132 moves to the rightmost side, the rotation direction of the guide wire rod 133 is changed, so that the second bracket 132 translates from right to left along the guide wire rod 133, so that the chain 112 follows the second roller 131 to move to the left, thereby making the chain 112 wound up by the winding roller 111 lay flat to the left, and so on and so forth, the chain 112 wound up by the winding roller 111 can be neatly wound up on the winding roller 111.
[0035] like Figure 3 As shown, during the reciprocating translation of the second bracket 132 along the guide screw 133, the chain 112 drives the first bracket 123 to swing around the connecting shaft 122, so that the chain 112 adjusts its direction under the swing of the second bracket 132 to adapt to the misalignment formed with the second roller 131 when the second roller 131 translates left and right, thereby reducing the lateral force exerted on the second roller 131 and facilitating the winding roller 111 to wind up the chain 112.
[0036] On the contrary, when unloading, the winding roller 111 can be unwound by rotating it in the opposite direction to lower the height of the goods. At the same time, the second bracket 132 is driven to move left and right by driving the guide screw 133 to rotate, so that the second roller 131 adjusts its position following the unwinding action of the winding roller 111, and the first bracket 123 swings its position angle following the position of the second roller 131 to reduce the lateral force on the first roller 121, thereby facilitating smooth unwinding of the winding roller 111.
[0037] Compared with the method of using a winding disk to wind up the chain 112 in the prior art, the present invention uses a winding roller 111 to wind up the chain 112, which can reduce the circumferential size of the winding disk, thereby making the volume of the lifting device 1 smaller. At the same time, with the guidance of the chain 112 by the first guide component 12 and the second guide component 13, the chain 112 can be neatly laid flat on the winding roller 111, avoiding the chain 112 from getting stuck on the winding roller 111.
[0038] In the embodiment of the present invention, the chain 112 is a ring chain 112 to increase the high temperature resistance and load-bearing performance of the chain 112, so that the chain 112 can lift the sand adding bucket 25 in the high temperature ladle for sand adding operation.
[0039] In an embodiment of the present utility model, the winding assembly 11 also includes a winding drive 114 and a winding transmission 115. The winding drive 114 is installed on the winding bracket 113 and is connected to the winding roller 111. One end of the winding transmission 115 is connected to the winding roller 111, and the other end is connected to the guide screw 133 to drive the guide screw 133 to rotate along with the winding roller 111.
[0040] By installing the winding drive member 114 and the winding transmission member 115 on both sides of the winding bracket 113 respectively, the winding drive member 114 drives the winding roller 111 to rotate, and the rotating winding roller 111 drives the guide wire rod 133 to rotate through the winding transmission member 115, so that the winding drive member 114 can drive the winding roller 111 to rotate while the winding transmission member 115 drives the guide wire rod 133 to rotate, thereby causing the second bracket 132 to reciprocate along the guide wire rod 133, and the second roller 131 drives the chain 112 to reciprocate along the winding roller 111, so that the chain 112 is neatly wound on the winding roller 111, avoiding the chain jamming caused by uneven winding of the chain 112.
[0041] In the above embodiment, the guide screw 133 adopts a reciprocating screw so that the guide screw 133 drives the second bracket 132 to reciprocate when it rotates in one direction. The second bracket 132 can be driven to move back and forth without changing the rotation direction of the guide screw 133, which makes it convenient for the winding roller 111 to neatly wind the chain 112 onto the winding roller 111.
[0042] In an embodiment of the present invention, a connecting flange and an axis are provided on the winding roller 111. The connecting flange is fixed on both sides of the winding roller 111 to fix the axis. The winding drive member 114 is connected to one end of the axis, and the winding transmission member 115 is connected to the other end of the axis.
[0043] By fixing the connecting flange on both sides of the winding roller 111, so that the axis passes through the connecting flange and protrudes from the two ends of the winding roller 111, and the axis and the winding roller 111 are relatively fixed, so that the winding drive member 114 can drive the winding roller 111 to rotate through the axis, and the winding transmission member 115 drives the guide wire rod 133 to rotate following the rotation of the axis, so that when the winding roller 111 is winding or unwinding the chain 112, the winding transmission member 115 drives the second bracket 132 to reciprocate and the first bracket 123 swings following the position of the second bracket 132, so as to reduce the lateral force on the first roller 121, and there is no need to drive the winding roller 111 and the guide wire rod 133 separately, thereby improving the automatic winding and unwinding effect of the lifting device 1.
[0044] In an embodiment of the present utility model, the first guide assembly 12 also includes a connecting bracket 124 and a positioning cylinder 125. The connecting bracket 124 is fixed on the mounting bracket. The connecting shaft 122 is rotatably connected to the connecting bracket 124 so that the first bracket 123 rotates relative to the mounting bracket. The positioning cylinder 125 is located directly below the first roller 121 and is connected to the connecting bracket 124 so that the chain 112 can pass through the positioning cylinder 125.
[0045] By fixing the connecting bracket 124 on the mounting bracket and rotating the connecting shaft 122 to be connected to the connecting bracket 124, the first bracket 123 can swing relative to the mounting bracket under the connection of the connecting bracket 124 to adapt to the reciprocating displacement of the second bracket 132 along the guide screw 133, thereby reducing the lateral force exerted on the first roller 121, and by fixing the positioning cylinder 125 directly below the first roller 121 and fixing the positioning cylinder 125 to the connecting bracket 124, the cargo can be lifted after the chain 112 passes through the positioning cylinder 125, so that the chain 112 can be limited under the action of the positioning cylinder 125 to avoid the chain 112 from swinging violently during the lifting process and causing a safety accident.
[0046] In an embodiment of the present invention, the second guide assembly 13 further includes a guide light rod 134 , both ends of which are fixedly connected to both ends of the winding bracket 113 , and the second bracket 132 passes through the guide light rod 134 and is slidably connected to the guide light rod 134 .
[0047] By fixing the guide light rod 134 on the winding bracket 113, the second bracket 132 can simultaneously reciprocate and translate under the connection of the guide wire rod 133 and the guide light rod 134, thereby improving the movement stability of the second bracket 132.
[0048] In an embodiment of the present invention, the winding drive 114 includes a motor, a reducer and a coupling. The reducer is fixed on the winding bracket 113 and fixedly connected to the motor. The two ends of the coupling are respectively connected to the reducer and the shaft.
[0049] By fixing the reducer on the winding bracket 113, and connecting the motor to the input end of the reducer, the shaft is connected to the output end of the reducer through a coupling, so that the reducer is driven to rotate by the motor, and the output torque is increased by the reducer to drive the shaft to rotate through the coupling, that is, to drive the winding roller 111 to rotate, so that the winding roller 111 drives the chain 112 to perform lifting and hoisting operations on the goods.
[0050] In an embodiment of the present invention, the winding transmission member 115 includes a driving sprocket, a driven sprocket and a driving chain 112. The driving sprocket is fixed on the axis, the driven sprocket is fixed on the guide screw 133, and the driving chain 112 is engaged with the driving sprocket and the driven sprocket at the same time.
[0051] By fixing the driving sprocket and the driven sprocket on the shaft and the guide wire rod 133 respectively, and making the driving chain 112 engage with the driving sprocket and the driven sprocket at the same time, when the motor drives the shaft to rotate, the shaft drives the guide wire rod 133 to rotate through the driving chain 112, so that the second bracket 132 moves back and forth along the guide wire rod 133, so that the chain 112 can be neatly wound on the winding roller 111, or the winding roller 111 can smoothly unwind the chain 112.
[0052] In an embodiment of the present utility model, the first bracket 123 is also rotatably connected to a first limiting wheel 126, and the first limiting wheel 126 is located above the first roller 121 to limit the chain 112 between the first roller 121 and the first limiting wheel 126, so that the chain 112 is limited in the up and down directions under the action of the first limiting wheel 126, thereby avoiding the chain 112 from jumping when the winding roller 111 is winding or unwinding, thereby improving the stability of the lifting device 1 when lifting goods.
[0053] In an embodiment of the present utility model, a second limiting wheel 135 is also rotatably connected to the second bracket 132. The second limiting wheel 135 is located above the second roller 131 to limit the chain 112 between the second roller 131 and the second limiting wheel 135. The chain 112 is limited in the up and down directions under the action of the second limiting wheel 135 to avoid the chain 112 from jumping when the winding roller 111 is winding or unwinding, thereby improving the stability of the lifting device 1 when lifting goods.
[0054] In an embodiment of the present invention, two groups of winding components 11, first guide components 12 and second guide components 13 are provided, two groups of winding components 11 are provided side by side, two groups of first guide components 12 are provided side by side, and two groups of second guide components 13 are provided side by side.
[0055] By providing two groups of the winding assembly 11, the first guide assembly 12 and the second guide assembly 13, the two winding assemblies 11 can respectively wind up the main hook chain 112 and the auxiliary hook chain 112, wherein one group of the first guide assembly 12 and the second guide assembly 13 guides the main hook chain 112, and the other group of the first guide assembly 12 and the second guide assembly 13 guides the auxiliary hook chain 112. When performing the ladle sand adding operation, the main hook chain 112 is connected to the sand adding bucket 25, and the auxiliary hook chain 112 is connected to the sand adding cover, so that after the lifting device 1 lifts the sand adding bucket 25 into the ladle, the sand adding cover is pulled out from the sand adding bucket 25 by winding the auxiliary hook chain 112, and then the drainage sand in the sand adding bucket 25 is poured into the ladle, thereby realizing the operation of adding drainage sand to the ladle.
[0056] See also Figure 4-Figure 5 , Figure 4 This is a schematic diagram of the three-dimensional structure of the ladle sand adding system provided by an embodiment of the utility model; Figure 5 yes Figure 4 The enlarged view of point C in the figure. To solve the above technical problems, the present invention provides a ladle sand adding system 2, which includes a carriage 21, a cantilever, a carriage drive 24, and the aforementioned lifting device 1. The cantilever includes a fixedly connected cantilever bracket 22 and a column 23. The carriage 21 is slidably connected to the cantilever bracket 22 for connection to the carriage drive 24. The lifting device 1 is fixed to the carriage 21 to move synchronously with the carriage 21 and lift the sand adding bucket 25.
[0057] By installing the lifting device 1 on the sports car 21, the lifting device 1 can be driven to move synchronously with the movement of the sports car 21. Then, when the lifting device 1 performs the lifting operation of the sand bucket 25, the lifting device 1 can drive the sand bucket 25 to move synchronously to adjust the position of the sand bucket 25. The chain 112 is wound by the winding component 11 in the lifting device 1 to adjust the height of the sand bucket 25. When winding, the chain 112 is guided by the first guide component 12 and the second guide component 13, so that the chain 112 can be wound smoothly on the winding roller 111 to avoid the chain 112 from getting stuck on the winding roller 111.
[0058] By fixing the cantilever on one side of the ladle, the sports car 21 is driven by the sports car driving member 24 to move along the cantilever bracket 22, and at the same time, the lifting device 1 moves synchronously with the sports car 21, and then the sand adding bucket 25 can be driven to move under the lifting of the lifting device 1, so as to facilitate the automatic filling operation of the ladle drainage sand and improve the intelligence of the ladle sand adding system 2.
[0059] In the above embodiment, a gear is provided on the cantilever, and a gear meshing with the rack is provided on the sports car driving member 24. Therefore, when the position of the sports car 21 needs to be moved, the gear is driven to rotate by controlling the sports car driving member 24, so that the gear moves along the rack, thereby driving the sports car 21 to move synchronously.
[0060] In the present invention, the signal connection between the first feature and the second feature can be a wireless connection such as a wireless network, Bluetooth, a local area network, etc., or a wired connection such as an electric wire, a network cable, a signal cable, etc., so that signals and communications can be transmitted between the first feature and the second feature.
[0061] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0062] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to various simple modifications, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be considered as disclosed in the present invention and fall within the scope of protection of the present invention.
[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A lifting device, used for lifting cargoes installed on a high-altitude mounting bracket, characterized in that: The lifting device includes a winding assembly, a first guide assembly and a second guide assembly. The winding assembly includes a winding roller, a chain and a winding bracket. The winding bracket is fixed to the mounting bracket. The winding roller is rotatably connected to the winding bracket to wind up the chain. The first guide assembly includes a first roller, a connecting shaft and a first bracket, the first bracket is rotatably connected to the mounting bracket via the connecting shaft, and the first roller is rotatably connected to the first bracket; The second guide assembly includes a second roller, a second bracket and a guide screw, both ends of the guide screw are rotatably connected to the winding bracket, and the direction of the guide screw is consistent with the direction of the winding roller, the second bracket is threadedly connected to the guide screw so as to drive the second bracket to translate under the rotation of the guide screw, and the second roller is rotatably connected to the second bracket; One end of the chain is wound on the winding roller, and the other end passes through the second roller and the first roller in sequence and is connected to the goods.
2. The lifting device according to claim 1, characterized in that: The winding assembly also includes a winding drive and a winding transmission. The winding drive is installed on the winding bracket and connected to the winding roller. One end of the winding transmission is connected to the winding roller, and the other end is connected to the guide screw to drive the guide screw to rotate along with the winding roller.
3. The lifting device according to claim 2, characterized in that: The winding roller is provided with a connecting flange and an axis, the connecting flange is fixed to both sides of the winding roller to fix the axis, the winding drive component is connected to one end of the axis, and the winding transmission component is connected to the other end of the axis.
4. The lifting device according to claim 1, characterized in that: The first guide assembly also includes a connecting bracket and a positioning cylinder. The connecting bracket is fixed on the mounting bracket. The connecting shaft is rotatably connected to the connecting bracket so that the first bracket rotates relative to the mounting bracket. The positioning cylinder is located directly below the first roller and is connected to the connecting bracket so that the chain can pass through the positioning cylinder.
5. The lifting device according to claim 1, characterized in that: The second guide assembly further includes a guide light rod, two ends of which are fixedly connected to two ends of the winding bracket, and the second bracket passes through the guide light rod and is slidably connected to the guide light rod.
6. The lifting device according to claim 3, characterized in that: The winding drive component includes a motor, a reducer and a coupling. The reducer is fixed on the winding bracket and fixedly connected to the motor. The two ends of the coupling are respectively connected to the reducer and the shaft center.
7. The lifting device according to claim 3, characterized in that: The winding transmission component includes a driving sprocket, a driven sprocket and a driving chain. The driving sprocket is fixed on the axis, the driven sprocket is fixed on the guide wire rod, and the driving chain is engaged with the driving sprocket and the driven sprocket at the same time.
8. The lifting device according to claim 1, characterized in that: The first bracket is further rotatably connected to a first limiting wheel, and the first limiting wheel is located above the first roller to limit the chain between the first roller and the first limiting wheel; and / or The second bracket is also rotatably connected to a second limiting wheel, and the second limiting wheel is located above the second roller to limit the chain between the second roller and the second limiting wheel.
9. The lifting device according to any one of claims 1 to 8, characterized in that: The winding assembly, the first guide assembly and the second guide assembly are each provided in two groups, the two groups of the winding assembly are arranged side by side, the two groups of the first guide assembly are arranged side by side, and the two groups of the second guide assembly are arranged side by side.
10. A ladle sand adding system, characterized in that: The ladle sand adding system includes a sports car, a cantilever, a sports car driving part and a lifting device as described in any one of claims 1 to 9, the cantilever includes a fixedly connected cantilever bracket and a column, the sports car is slidably connected to the cantilever bracket for connection to the sports car driving part, and the lifting device is fixed on the sports car to move synchronously with the sports car and lift the sand adding bucket.