Vertical elevator

Abstract

The utility model belongs to the technical field of elevators, and particularly relates to a vertical elevator which comprises a base, a guide rod and a lifting frame, the guide rod is vertically and fixedly installed on the base, a motor is fixedly arranged at the top of the guide rod, a first chain wheel is fixedly installed on an output shaft of the motor, and a second chain wheel is fixedly arranged on the base. The first chain wheel is connected with the second chain wheel through a chain, a sleeve is slidably connected to the outer side wall of the guide rod, the lifting frame is fixedly connected with the outer side wall of the sleeve, the outer side wall of the guide rod is sleeved with a brake disc, the side wall of the brake disc is rotationally connected with the side wall of the sleeve, and the brake disc is connected with a trigger mechanism connected with the chain. Due to the fact that the brake disc and the brake disc pressing assembly are coaxially arranged on the outer side wall of the guide rod in the sleeved mode, when a chain is suddenly broken, the brake disc inclines relative to the axis of the connecting rod through the pressing assembly, the inner side wall of the brake disc makes close contact with the outer side wall of the guide rod, and emergency braking is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting technology, specifically relating to a vertical hoisting machine. Background Technology

[0002] Vertical elevators are mainly used for vertically lifting various granular, powdery, lumpy, and short strip materials. When used with hoppers, they can also lift liquid materials. A transmission device causes the hoppers to run along a specific track. When the hoppers reach the desired height, they automatically tilt, emptying the material inside and achieving vertical transport and lifting. Vertical elevators offer advantages such as stable operation and simple operation, and are widely used in mining, chemical, grain, and food industries.

[0003] Various technical solutions for vertical lifting machines have been proposed in the prior art. For example, the utility model patent with authorization announcement number CN201458381U discloses a double-column movable material cart vertical lifting machine for producing solid seasonings. It includes a motor, a reducer, a rotating shaft, a drive sprocket, a sling, a chain buckle, a guide wheel, a chain, a driven sprocket, a material cart frame, and a material cart. The motor and reducer are connected. The chain connects the drive sprocket and the driven sprocket. The sling connects the chain buckle and the rotating shaft. The chain buckle is connected to the chain. One end of the rotating shaft is connected to the material cart frame. The material cart frame is connected to the guide wheel. The material cart is placed in the material cart frame.

[0004] The material cart of this utility model can be directly used as the bucket of the elevator, eliminating the cumbersome process of first loading materials into a container and then pouring them into the elevator bucket, thus improving operational efficiency. However, this utility model lacks an anti-fall mechanism during use. If the chain breaks and causes the bucket to lose speed and fall, it can easily lead to a safety accident. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a vertical lifting machine to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0007] A vertical lifting machine includes a base, a guide rod, and a lifting frame. The guide rod is vertically fixedly installed on the base. A motor is fixedly installed on the top of the guide rod. A first sprocket is fixedly installed on the output shaft of the motor. A second sprocket is fixedly installed on the base. The first sprocket and the second sprocket are connected by a chain. A sleeve is slidably connected to the outer wall of the guide rod. The lifting frame is fixedly connected to the outer wall of the sleeve. A brake disc is sleeved on the outer wall of the guide rod. The bottom surface of the brake disc contacts the top surface of the sleeve. The side wall of the brake disc is rotatably connected to the side wall of the sleeve. The brake disc is connected to a triggering mechanism and is connected to the chain.

[0008] As a further improvement, the triggering mechanism includes a first boss protruding vertically outward on the outer wall of the brake disc and a second boss protruding vertically outward on the outer wall of the sleeve. The first boss and the second boss are rotatably connected by a first rotating shaft, and the end of the first boss away from the sleeve is connected to the pressing assembly.

[0009] As a further improvement, the pressing assembly includes a first mounting plate and a second mounting plate fixedly and horizontally disposed on the outer side wall of the sleeve. The first mounting plate is located above the second mounting plate. A first mounting hole is provided through the first mounting plate. A first connecting rod is slidably connected in the first mounting hole. A limit nut is threadedly connected to the lower end of the first connecting rod. A compression spring is sleeved on the outer side wall of the first connecting rod. The top end of the compression spring abuts against the lower surface of the first mounting plate, and the bottom end of the compression spring abuts against the upper surface of the limit nut. A first support arm is vertically fixedly connected to the side wall of the first connecting rod. The first support arm is rotatably connected to the end of the first boss away from the brake disc. One end of the chain is rotatably connected to the top end of the first connecting rod, and the other end of the chain is rotatably connected to the bottom surface of the second mounting plate.

[0010] As a further improvement, a second rotating shaft is fixedly connected to the bottom of the side wall of the lifting frame. One end of the second rotating shaft is rotatably connected to the side wall of the sleeve. A second support arm is vertically fixedly connected to the second rotating shaft and is obliquely upward. Two first guide wheels and a second guide wheel are rotatably connected to the second support arm. The axes of the first guide wheel and the second guide wheel are parallel to the axis of the second rotating shaft. The height of the first guide wheel is lower than the height of the second guide wheel.

[0011] The guide rod is equipped with an outer shell. A third arm is rotatably connected to the side wall of the outer shell via a third rotating shaft. The axis of the third rotating shaft is parallel to the axis of the second rotating shaft. A slot is fixed on the third arm. The top of the slot is closed and the bottom is open at an angle downwards. The first guide wheel cooperates with the inner wall of the slot, and the second guide wheel cooperates with the outer wall of the slot.

[0012] As a further improvement, a fourth arm is fixedly provided on the outer wall of the sleeve. The extension direction of the fourth arm is parallel to the axis of the second rotating shaft. A limit bolt is threaded through the fourth arm, and one end of the limit bolt abuts against the side of the second arm near the hopper.

[0013] As a further improvement, both ends of the second rotating shaft are fixedly connected to vertically arranged side plates. The axis of the second rotating shaft is perpendicular to the side plates. A horizontal sliding groove is provided through the side plates. One end of the sliding groove is open, and the other end extends vertically downward to form a sink. A hopper is detachably connected to the lifting frame. A positioning column is fixedly provided on the side wall of the hopper. The positioning column slides with the sliding groove. A locking mechanism is provided at the opening of the sliding groove.

[0014] As a further improvement, the locking mechanism includes a third mounting plate installed at the bottom of the side plate. The length extension direction of the third mounting plate is parallel to the length extension direction of the sliding groove. One end of the third mounting plate near the groove is rotatably connected to the side plate, and the other end of the third mounting plate is connected to the side plate by a tension spring. A first stop block is provided on the third mounting plate near the opening of the sliding groove, and the first stop block cooperates with the opening of the sliding groove.

[0015] As a further improvement, the bottom of the first stop block is fixedly connected to the third mounting plate. The first stop block includes a vertical side wall and an inclined side wall. The intersection of the vertical side wall and the inclined side wall is an arc-shaped curved surface structure. The arc-shaped curved surface abuts against the inner top wall of the sliding groove. The interior of the first stop block is hollow, and one end of the side plate is located inside the first stop block.

[0016] A horizontally positioned positioning plate is fixedly connected to the side wall of the hopper. A positioning column is fixedly connected to the front end of the positioning plate. The positioning column is located below the positioning plate. The other end wall of the positioning plate abuts against the vertical side wall of the first stop block.

[0017] Due to the adoption of the above technical solution, the beneficial technical effects of this utility model are as follows:

[0018] This utility model provides a vertical lifting machine that uses a brake disc coaxially mounted on the outer wall of a guide rod. The brake disc is connected to a triggering mechanism and a pressing assembly. When the chain suddenly breaks, the pressing assembly causes the brake disc to tilt relative to the axis of the connecting rod. The inner wall of the brake disc comes into close contact with the outer wall of the guide rod, achieving emergency braking under the action of friction to prevent injury to personnel below. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the assembly of the motor and chain of this utility model;

[0021] Figure 3 This is a schematic diagram of the assembly of the brake disc and sleeve of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the pressing component of this utility model;

[0023] Figure 5 This is an assembly diagram of the sleeve and lifting frame of this utility model;

[0024] Figure 6 This is a schematic diagram of the assembly of the second guide wheel and the slot of this utility model;

[0025] Figure 7 This is a schematic diagram of the hopper tilting of this utility model;

[0026] Figure 8 This is a schematic diagram of the locking mechanism of this utility model;

[0027] Figure 9 This is an assembly diagram of the hopper and lifting frame of this utility model;

[0028] Figure 10 This is an assembly drawing and a partial enlarged view of the fourth arm and the second arm of this utility model.

[0029] Wherein: 1-base, 2-guide rod, 201-sleeve, 2011-fourth support arm, 2012-limit bolt, 202-brake disc, 3-lifting frame, 301-hopper, 3011-positioning plate, 3012-positioning column, 302-second rotating shaft, 303-second support arm, 304-first guide wheel, 305-second guide wheel, 306-side plate, 307-sliding groove, 308-sinking trough, 4-motor, 401-first sprocket, 402-second sprocket, 403- Chain, 5-Triggering mechanism, 501-First boss, 502-Second boss, 503-First rotating shaft, 6-Pressing assembly, 601-First mounting plate, 602-Second mounting plate, 603-First connecting rod, 604-Limit nut, 605-Compression spring, 606-First support arm, 7-Housing shell, 701-Third rotating shaft, 702-Third support arm, 703-Slot, 8-Locking mechanism, 801-Third mounting plate, 802-Tension spring, 803-First stop block. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0031] like Figures 1-10As shown, a vertical lifting machine includes a base 1, a guide rod 2, and a lifting frame 3. The guide rod 2 is vertically fixedly installed on the base 1. A motor 4 is fixedly installed on the top of the guide rod 2. A first sprocket 401 is fixedly installed on the output shaft of the motor 4. A second sprocket 402 is fixedly installed on the base 1. The first sprocket 401 and the second sprocket 402 are connected by a chain 403. A sleeve 201 is slidably connected to the outer wall of the guide rod 2. The lifting frame 3 is fixedly connected to the outer wall of the sleeve 201. A brake disc 202 is sleeved on the outer wall of the guide rod 2. The bottom surface of the brake disc 202 contacts the top surface of the sleeve 201. The side wall of the brake disc 202 is rotatably connected to the side wall of the sleeve 201. The brake disc 202 is connected to a triggering mechanism 5, which is connected to the chain 403.

[0032] Motor 4 drives the first sprocket 401 to rotate, the first sprocket 401 drives the chain 403 to rotate, the chain 403 drives the sleeve 201 and the lifting frame 3 connected to the sleeve 201 to move up and down. The lifting frame 3 is used to carry the hopper 301, the hopper 301 is used to hold materials, and the sleeve 201 mainly serves as a guide and connector. Specifically, the lifting frame 3, the brake disc 202 and the triggering mechanism 5 are all connected to the sleeve 201, and the brake disc 202 mainly serves as a brake.

[0033] Under normal conditions, the brake disc 202 is coaxially mounted with the guide rod 2, and the inner diameter of the brake disc 202 is larger than the outer diameter of the guide rod 2. When the chain 403 breaks, the triggering mechanism 5 acts on the brake disc 202, causing the brake disc 202 to tilt relative to the guide rod 2 at a certain angle. The inner wall of the brake disc 202 is in close contact with the outer wall of the guide rod 2, and emergency braking is achieved under the action of friction. At the same time, the sleeve 201 and the lifting frame 3 connected to the sleeve 201 stop descending.

[0034] In this embodiment, the triggering mechanism 5 includes a first protrusion 501 protruding vertically outward on the outer side wall of the brake disc 202 and a second protrusion 502 protruding vertically outward on the outer side wall of the sleeve 201. The first protrusion 501 and the second protrusion 502 are rotatably connected by a first rotating shaft 503. The end of the first protrusion 501 away from the sleeve 201 is connected to the pressing component 6.

[0035] like Figure 4 As shown, when the pressing component 6 applies a downward force to the first boss 501, it will cause the brake disc 202 to rotate clockwise and thus tilt.

[0036] In this embodiment, the pressing component 6 includes a first mounting plate 601 and a second mounting plate 602 fixedly and horizontally disposed on the outer side wall of the sleeve 201. The first mounting plate 601 is located above the second mounting plate 602. A first mounting hole is provided through the first mounting plate 601. A first connecting rod 603 is slidably connected in the first mounting hole. A limit nut 604 is threadedly connected to the lower end of the first connecting rod 603. A compression spring 605 is sleeved on the outer side wall of the first connecting rod 603. The top end of the compression spring 605 abuts against the lower surface of the first mounting plate 601, and the bottom end of the compression spring 605 abuts against the upper surface of the limit nut 604. A first support arm 606 is vertically fixedly connected to the side wall of the first connecting rod 603. The first support arm 606 is rotatably connected to the end of the first boss 501 away from the brake disc 202. One end of the chain 403 is rotatably connected to the top end of the first connecting rod 603, and the other end of the chain 403 is connected to the bottom surface of the second mounting plate 602, thereby forming a closed loop.

[0037] Under normal conditions, the chain 403 applies an upward vertical force to the first link 603, the compression spring 605 is compressed, and the sleeve 201 and the lifting frame 3 apply a downward vertical force to the first link 603 through the compression spring 605. When the chain 403 suddenly breaks, the upward vertical force applied to the first link 603 suddenly disappears, the compression spring 605 quickly extends under its own elasticity, and applies a downward force to the first link 603 through the limiting nut 604, causing the first link 603 and the first support arm 606 fixedly connected to the first link 603 to move downward relative to the first mounting plate 601, thereby causing the end of the brake disc 202 with the first protrusion 501 to tilt downward, and the inner wall of the brake disc 202 to come into close contact with the outer wall of the guide rod 2, ultimately causing the lifting frame 3 to brake in an emergency.

[0038] In this embodiment, a second rotating shaft 302 is fixedly connected to the bottom of the side wall of the lifting frame 3. One end of the second rotating shaft 302 is rotatably connected to the side wall of the sleeve 201. A second support arm 303 is vertically fixedly connected to the second rotating shaft 302 and is obliquely upward. Two first guide wheels 304 and second guide wheels 305 are rotatably connected to the second support arm 303. The axes of the first guide wheels 304 and the second guide wheels 305 are parallel to the axis of the second rotating shaft 302. The height of the first guide wheel 304 is lower than the height of the second guide wheel 305.

[0039] The guide rod 2 is surrounded by a housing 7. The chain 403 and the second sprocket 402 are located inside the housing 7 to prevent the chain 403 from causing injury to personnel during operation. A third support arm 702 is rotatably connected to the side wall of the housing 7 via a third rotating shaft 701. The axis of the third rotating shaft 701 is parallel to the axis of the second rotating shaft 302. A slot 703 is fixedly provided on the third support arm 702. The top of the slot 703 is closed and the bottom is open at an angle downwards. The first guide wheel 304 cooperates with the inner wall of the slot 703, and the second guide wheel 305 cooperates with the outer wall of the slot 703.

[0040] like Figure 6 As shown, during the upward movement of the lifting frame 3, the first guide wheel 304 slides into the slot 703 and abuts against the top of the slot 703, while the outer wall of the second guide wheel 305 rolls against the outer wall of the sliding groove 307. As the lifting frame 3 moves further upward, the third arm 702 rotates clockwise around the second rotating shaft 302, causing the second arm 303 to rotate counterclockwise around the second rotating shaft 302. This causes the lifting frame 3 and the hopper 301 mounted on the lifting frame 3 to rotate counterclockwise by a certain angle, thus allowing the material in the hopper 301 to be poured out.

[0041] In practical use, limit switches are installed on the outer casing 7 at both the highest and lowest points that the second rotating shaft 302 can reach during lifting and lowering. The limit switches and the motor 4 are both connected to a controller. When the second rotating shaft 302 triggers a limit switch during ascent or descent, the limit switch sends a signal to the controller. Upon receiving the signal, the controller stops the motor 4, thus stopping the second rotating shaft 302 and the lifting frame 3 from rising or falling. This prevents the motor 4 from continuing to rotate after the lifting frame 3 has reached its highest or lowest position, which could damage the equipment.

[0042] In this embodiment, a fourth support arm 2011 is fixedly provided on the outer wall of the sleeve 201. The extension direction of the fourth support arm 2011 is parallel to the axis of the second rotating shaft 302. A limit bolt 2012 is threadedly connected to the fourth support arm 2011. One end of the limit bolt 2012 abuts against the side of the second support arm 303 near the hopper 301.

[0043] In use, because the second rotating shaft 302 is located at the bottom of one side wall of the lifting frame 3, the center of gravity of the lifting frame 3 deviates from the axis of the second rotating shaft 302. For example... Figure 10 As shown, the lifting frame 3 has a tendency to rotate counterclockwise around the second rotation axis 302. The fourth support arm 2011 is used to prevent the lifting frame 3 and the hopper 301 from tipping over counterclockwise.

[0044] In this embodiment, both ends of the second rotating shaft 302 are fixedly connected to vertically arranged side plates 306. The axis of the second rotating shaft 302 is perpendicular to the side plates 306. A horizontal sliding groove 307 is provided through the side plates 306. One end of the sliding groove 307 is open, and the other end extends vertically downward to form a sink 308. A hopper 301 is detachably connected to the lifting frame 3. A positioning post 3012 is fixedly provided on the side wall of the hopper 301. The positioning post 3012 slides with the sliding groove 307. A locking mechanism 8 is provided at the opening of the sliding groove 307.

[0045] In practical implementation, to facilitate the movement of the hopper 301, casters can be installed at the bottom of the hopper 301. The hopper 301 can be manually pushed to move, causing the positioning pin 3012 on the side wall of the hopper 301 to engage in the sliding groove 307 until the positioning pin 3012 reaches the innermost end of the sliding groove 307. In this article, for clarity and convenience, the direction from the opening of the sliding groove 307 to the sink 308 is defined as from the outside to the inside. When the lifting frame 3 moves upward, the positioning pin 3012 slides into the sink 308, preventing the positioning pin 3012 from sliding freely along the sliding groove 307. The locking mechanism 8 is used to lock the hopper 301 and the lifting frame 3 together, preventing the hopper 301 from falling off the lifting frame 3 during the lifting process.

[0046] In this embodiment, the locking mechanism 8 includes a third mounting plate 801 installed at the bottom of the side plate 306. The length extension direction of the third mounting plate 801 is parallel to the length extension direction of the sliding groove 307. One end of the third mounting plate 801 near the sink 308 is rotatably connected to the side plate 306. The other end of the third mounting plate 801 is connected to the side plate 306 by a tension spring 802. A first stop block 803 is provided at the opening of the sliding groove 307 near the third mounting plate 801. The first stop block 803 cooperates with the opening of the sliding groove 307.

[0047] When the first stop block 803 is subjected to a downward force, the third mounting plate 801 rotates clockwise around its connection point with the side plate 306, the tension spring 802 is stretched, and the first stop block 803 moves away from the opening of the sliding groove 307, allowing the positioning pin 3012 on the hopper 301 to slide smoothly into the sliding groove 307. When the force applied to the first stop block 803 is removed, the tension spring 802 contracts under its own elasticity and drives the third mounting plate 801 to rotate counterclockwise, moving the first stop block 803 to the opening end of the sliding groove 307, preventing the positioning pin 3012 from sliding out of the sliding groove 307.

[0048] In this embodiment, the bottom of the first stop block 803 is fixedly connected to the third mounting plate 801. The first stop block 803 includes a vertical side wall and an inclined side wall. The intersection of the vertical side wall and the inclined side wall is an arc-shaped curved surface structure. The arc-shaped curved surface abuts against the inner top wall of the sliding groove 307. The interior of the first stop block 803 is hollow. One end of the side plate 306 is located inside the first stop block 803.

[0049] A horizontally arranged positioning plate 3011 is fixedly connected to the side wall of the hopper 301. A positioning post 3012 is fixedly connected to the front end of the positioning plate 3011. The positioning post 3012 is located below the positioning plate 3011. The other end wall of the positioning plate 3011 abuts against the vertical side wall of the first stop block 803.

[0050] When the hopper 301 is manually pushed inward along the sliding groove 307, the positioning pin 3012 and the positioning plate 3011 on the hopper 301 abut against the inclined side of the first stop block 803, forcing the third mounting plate 801 to rotate clockwise. Simultaneously, the tension spring 802 is stretched. When the positioning pin 3012 reaches the innermost position of the sliding groove 307, the positioning plate 3011 just passes the apex of the first stop block 803. Then, the tension spring 802 contracts, causing the third mounting plate 801 to rotate counterclockwise and return to its original position. At this point, the end wall of the positioning plate 3011 abuts against the vertical side wall of the first stop block 803, thus limiting the outward movement of the second stop block. Therefore, the hopper 301 is fixed to the lifting frame 3, preventing it from slipping off. In practical use, a foot pedal can be installed on the third mounting plate 801 for easy foot use. After stepping on the pedal, the third mounting plate 801 rotates clockwise, and the first stop block 803 can no longer restrict the movement of the positioning plate 3011. At this time, the hopper 301 can be manually separated from the lifting frame 3.

[0051] In this embodiment, material is loaded into the hopper 301, and the hopper 301 is manually pushed so that the positioning pins 3012 on both sides engage with the sliding groove 307. The locking mechanism 8 is used to limit the movement of the hopper 301 and prevent the hopper 301 from slipping off the lifting frame 3. The motor 4 drives the first sprocket 401 to rotate, the first sprocket 401 drives the chain 403 to rotate, and the chain 403 drives the sleeve 201 and the lifting frame 3 to move up and down. During the upward movement of the lifting frame 3, the first guide wheel 304 on the second support arm 303 slides into the slot 703 and abuts against the top of the slot 703. The outer wall of the second guide wheel 305 slides in cooperation with the outer wall of the sliding groove 307. As the lifting frame 3 moves further upward, the third arm 702 rotates clockwise around the second rotating shaft 302, and drives the second arm 303 to rotate counterclockwise around the second rotating shaft 302, thereby causing the hopper 301 to rotate counterclockwise by a certain angle, so that the material in the hopper 301 can be poured out.

[0052] When the chain 403 suddenly breaks, the upward force originally applied to the first link 603 disappears. The compression spring 605 quickly extends under its own elasticity and applies a downward force to the first link 603 through the limit nut 604. This causes the first link 603 and the support arm fixedly connected to the first link 603 to move downward relative to the first mounting plate 601. This, in turn, causes one end of the first boss 501 of the brake disc 202 to tilt downward, making the inner wall of the brake disc 202 in close contact with the outer wall of the guide rod 2, ultimately causing the lifting frame 3 to brake in an emergency.

[0053] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A vertical lifting machine, comprising a base, guide rods, and a lifting frame, characterized in that, The guide rod is vertically fixedly installed on the base. A motor is fixedly installed on the top of the guide rod. A first sprocket is fixedly installed on the output shaft of the motor. A second sprocket is fixedly installed on the base. The first sprocket and the second sprocket are connected by a chain. A sleeve is slidably connected to the outer wall of the guide rod. The lifting frame is fixedly connected to the outer wall of the sleeve. A brake disc is sleeved on the outer wall of the guide rod. The bottom surface of the brake disc contacts the top surface of the sleeve. The side wall of the brake disc is rotatably connected to the side wall of the sleeve. The brake disc is connected to a triggering mechanism, which is connected to the chain.

2. The vertical lifting machine according to claim 1, characterized in that, The triggering mechanism includes a first protrusion protruding vertically outward on the outer wall of the brake disc and a second protrusion protruding vertically outward on the outer wall of the sleeve. The first protrusion and the second protrusion are rotatably connected by a first rotating shaft, and the end of the first protrusion away from the sleeve is connected to a pressing component.

3. The vertical lifting machine according to claim 2, characterized in that, The pressing assembly includes a first mounting plate and a second mounting plate fixedly and horizontally disposed on the outer wall of the sleeve. The first mounting plate is located above the second mounting plate. A first mounting hole is provided through the first mounting plate. A first connecting rod is slidably connected in the first mounting hole. A limit nut is threadedly connected to the lower end of the first connecting rod. A compression spring is sleeved on the outer wall of the first connecting rod. The top end of the compression spring abuts against the lower surface of the first mounting plate, and the bottom end of the compression spring abuts against the upper surface of the limit nut. A first support arm is vertically fixedly connected to the side wall of the first connecting rod. The first support arm is rotatably connected to the end of the first boss away from the brake disc. One end of the chain is rotatably connected to the top end of the first connecting rod, and the other end of the chain is rotatably connected to the bottom surface of the second mounting plate.

4. The vertical lifting machine according to claim 1, characterized in that, The bottom of the side wall of the lifting frame is fixedly connected to a second rotating shaft. One end of the second rotating shaft is rotatably connected to the side wall of the sleeve. A second support arm is vertically fixedly connected to the second rotating shaft and is obliquely upward. Two first guide wheels and a second guide wheel are rotatably connected to the second support arm. The axes of the first guide wheel and the second guide wheel are parallel to the axis of the second rotating shaft. The height of the first guide wheel is lower than the height of the second guide wheel. The guide rod has an outer shell, and a third arm is rotatably connected to the side wall of the outer shell via a third rotating shaft. The axis of the third rotating shaft is parallel to the axis of the second rotating shaft. A slot is fixed on the third arm. The top of the slot is closed and the bottom is open at an angle downwards. The first guide wheel cooperates with the inner wall of the slot, and the second guide wheel cooperates with the outer wall of the slot.

5. The vertical lifting machine according to claim 4, characterized in that, Both ends of the second rotating shaft are fixedly connected to vertically arranged side plates. The axis of the second rotating shaft is perpendicular to the side plates. A horizontal sliding groove is provided through the side plates. One end of the sliding groove is open, and the other end extends vertically downward to form a sink. A hopper is detachably connected to the lifting frame. A positioning post is fixedly provided on the side wall of the hopper. The positioning post slides with the sliding groove. A locking mechanism is provided at the opening of the sliding groove.

6. The vertical lifting machine according to claim 5, characterized in that, A fourth arm is fixedly provided on the outer wall of the sleeve. The extension direction of the fourth arm is parallel to the axis of the second rotating shaft. A limit bolt is threaded through the fourth arm, and one end of the limit bolt abuts against the side of the second arm near the hopper.

7. The vertical lifting machine according to claim 6, characterized in that, The locking mechanism includes a third mounting plate installed at the bottom of the side plate. The length extension direction of the third mounting plate is parallel to the length extension direction of the sliding groove. One end of the third mounting plate near the groove is rotatably connected to the side plate. The other end of the third mounting plate is connected to the side plate by a tension spring. A first stop block is provided on the third mounting plate near the opening of the sliding groove. The first stop block cooperates with the opening of the sliding groove.

8. The vertical lifting machine according to claim 7, characterized in that, The bottom of the first stop block is fixedly connected to the third mounting plate. The first stop block includes a vertical sidewall and an inclined sidewall. The intersection of the vertical sidewall and the inclined sidewall is an arc-shaped curved surface structure. The arc-shaped curved surface abuts against the inner top wall of the sliding groove. The interior of the first stop block is hollow. One end of the side plate is located inside the first stop block. A horizontally arranged positioning plate is fixedly connected to the side wall of the hopper. A positioning column is fixedly connected to the front end of the positioning plate. The positioning column is located below the positioning plate. The other end wall of the positioning plate abuts against the vertical side wall of the first stop block.

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