A fork circulation hoist

Abstract

The present application relates to a fork circulation hoist, which relates to the technical field of hoists, and includes a hoist body; a feed conveying mechanism disposed on one side of the hoist body; a discharge conveying mechanism disposed on the other side of the hoist body; the hoist body, the feed conveying mechanism, and the discharge conveying mechanism are all used to convey cargo boxes; a hoist frame is mounted on the hoist body, and the hoist frame includes: a hoist base mounted on the hoist body; a first cargo rod fixedly mounted on the hoist base; a second cargo rod passing through the hoist base; a connecting plate fixedly mounted on an end of the second cargo rod away from the hoist base, the connecting plate being provided with a fixing groove, into which the first cargo rod can be embedded. The present application can prevent deformation of the hoist frame caused by long-term cargo transportation, and has the effect of improving the stability of the hoist frame in transporting cargo.

Description

Technical Field

[0001] The present application relates to the technical field of elevators, and in particular to a fork circulation elevator. Background Art

[0002] A circulating elevator is a device used for vertical material transport. It can continuously transport goods to different heights. It can efficiently transport large quantities of goods vertically, saving manpower and improving production efficiency.

[0003] A Chinese patent application numbered (CN201721812381.9) discloses a circulating hoisting mechanism, wherein the circulating hoist includes a frame, a motor, a driving sprocket, a driven sprocket, and a transmission chain looped around the driving sprocket and the driven sprocket. The transmission chain is connected to a plurality of lifting racks, which can be docked with a feeding conveyor line to enable the feeding of goods, and the lifting racks can be docked with a discharging conveyor line to enable the discharging of goods. The lifting racks are connected to a leveling mechanism that keeps the lifting racks horizontal at all times. A circulating hoisting mechanism lifts goods by means of a lifting rack fixed to a transmission chain, and the lifting racks can circulate with the transmission chain to achieve cyclic storage and retrieval of goods.

[0004] Regarding the above-mentioned related technologies, the lifting frame of the circulating elevator is generally composed of a base and multiple cross bars fixedly installed on the base and arranged side by side. Under the action of gravity, long-term transportation of goods will cause deformation between the cross bars and the base, which will lead to unstable placement of the goods on the lifting frame. Summary of the Invention

[0005] In order to avoid deformation of the lifting frame caused by long-term transportation of goods and improve the stability of the lifting frame in transporting goods, the present application provides a fork circulation lift.

[0006] The present application provides a fork circulation hoist, which adopts the following technical solutions:

[0007] A fork circulation hoist, comprising:

[0008] Elevator body;

[0009] A feeding and conveying mechanism, the feeding and conveying mechanism being arranged on one side of the elevator body;

[0010] A discharging conveying mechanism, the discharging conveying mechanism being arranged on the other side of the elevator body;

[0011] A carrier box, the carrier box is used to store materials, and the elevator body, the feeding conveying mechanism and the discharging conveying mechanism are all used to transport the carrier box;

[0012] At least one lifting frame is installed on the hoist body, and the lifting frame includes:

[0013] A lifting base, the lifting base being mounted on the lifting machine body;

[0014] at least one first carrying rod, wherein the first carrying rod is fixedly mounted on the lifting base;

[0015] a second carrying rod, the second carrying rod being passed through the lifting base;

[0016] a connecting plate, the connecting plate being fixedly mounted on an end of the second carrying rod away from the lifting base, the connecting plate being provided with a fixing groove in which the first carrying rod can be embedded;

[0017] A driving assembly is installed in the lifting base, the driving assembly is connected to the second carrying rod, and the driving assembly can drive the second carrying rod to rotate and slide on the lifting base.

[0018] Optionally, the driving component includes:

[0019] an abutment block, the abutment block being slidably mounted in the second carrying rod;

[0020] a sliding rod, one end of which is inserted into the second carrying rod and fixedly connected to the abutment block;

[0021] a first sliding groove, wherein the first sliding groove is provided on the sliding rod and has an arc shape;

[0022] a second chute, the second chute being provided on the sliding rod, the second chute being a straight chute, the first chute being connected to the second chute;

[0023] A fixed block is fixedly installed in the lifting base, and the fixed block can slide in the first sliding groove and the second sliding groove.

[0024] Optionally, an electric telescopic rod is fixedly installed in the lifting base, and a movable end of the electric telescopic rod is rotatably connected to the sliding rod.

[0025] Optionally, a first return spring is sleeved on the second carrying rod, one end of the first return spring is fixedly connected to the second carrying rod, and the other end of the first return spring is fixedly connected to the lifting base.

[0026] Optionally, a buckle assembly is provided on the connecting plate, and the buckle assembly includes:

[0027] a clamping block, the clamping block being slidably mounted on a side wall of the fixing groove;

[0028] A snap spring, one end of which is fixedly connected to the clamping block, and the other end of which is fixedly connected to the connecting plate.

[0029] Optionally, a slot is formed at one end of the first carrying rod away from the lifting base, and the clamping block can be clamped in the slot.

[0030] Optionally, a push rod is provided in the first carrying rod, and the push rod can abut against the connecting plate;

[0031] Two symmetrically arranged elastic sheets are fixedly mounted on the push rod;

[0032] The first object carrying rod is provided with two symmetrically arranged paving grooves, and the elastic piece is slidably installed in the paving grooves.

[0033] Optionally, a centering mechanism is installed on the lifting base, and the centering mechanism includes:

[0034] Two centering plates, the two centering plates are symmetrically and rotatably mounted on the lifting base;

[0035] A rotating motor, wherein a fixed end of the rotating motor is fixedly mounted in the lifting base, an output shaft of the rotating motor is passed through the lifting base, and the output shaft of the rotating motor is fixedly connected to the centering plate;

[0036] A travel switch is electrically connected to the rotating motor.

[0037] Optionally, one end of the push rod away from the connecting plate is fixedly connected to a push plate, and the push plate is connected to the travel switch;

[0038] A second return spring is fixedly connected to the push plate, and one end of the second return spring away from the push plate is fixedly mounted on the lifting base.

[0039] Optionally, the feed conveying mechanism includes a feed conveying device and a feed carrier, and the feed conveying device and the feed carrier are both fixedly mounted on the elevator body;

[0040] The discharging conveying mechanism includes a discharging conveying device and a discharging object carrier, and the discharging conveying device and the discharging object carrier are both fixedly mounted on the elevator body.

[0041] In summary, this application includes at least one of the following beneficial technical effects:

[0042] 1. When the lifting frame picks up the carrier box on the feed carrier, the second carrier rod is controlled by the driving component to make the axis of the connecting plate in a vertical state, and the lifting machine body drives the lifting base to move, so that the first carrier rod, the second carrier rod and the connecting plate pass through the gap between the conveying rollers of the feed carrier, and the carrier box abuts against the first carrier rod and the second carrier rod. Then the driving component first controls the second carrier rod to rotate so that the axis of the connecting plate is in a horizontal state, and the driving component then controls the second carrier rod to move in the direction close to the lifting base, so that the first carrier rod is clamped in the fixing groove, and the end of the first carrier rod away from the lifting base is connected to the end of the second carrier rod away from the lifting base, thereby improving the structural stability of the first carrier rod and the second carrier rod, avoiding deformation of the connection between the first carrier rod and the second carrier rod and the lifting base caused by long-term transportation of the carrier box and the goods, and improving the stability of the lifting frame in transporting goods;

[0043] 2. The two elastic sheets allow the cargo box to be stably abutted against the first carrier rod. When the connecting plate moves toward the first carrier rod and abuts against it, the push rod abuts against the connecting plate and moves toward one end close to the lifting base. The movement of the push rod drives the elastic sheet to move synchronously, and the movement of the elastic sheet drives the cargo box to move synchronously, and the cargo box moves toward the lifting base. This reduces the distance between the center of gravity of the cargo box and the lifting base, reduces the torque between the first and second carrier rods, and thus reduces the deformation of the first and second carrier rods caused by the gravity of the cargo box.

[0044] 3. When the cargo box is transported by the lifting frame, the spring sheet and the centering plate work together to stabilize the position of the cargo box on the lifting frame, thereby preventing the cargo box from being displaced during the lifting and transportation process and improving the stability of the fork circulation hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural diagram of an embodiment of the present application;

[0046] Figure 2 It is a schematic diagram for showing the structure of the lifting frame carrying the loading box;

[0047] Figure 3 It is a schematic diagram for showing the structure of the lifting frame;

[0048] Figure 4 It is a schematic diagram for showing the structure of the first carrier rod;

[0049] Figure 5 It is a schematic diagram for showing the internal structure of the lifting base;

[0050] Figure 6 It is a schematic diagram used to show the structure of the drive components;

[0051] Figure 7It is a schematic diagram for showing the structure of the snap assembly.

[0052] Description of reference numerals:

[0053] 1. Elevator body; 11. Carrying box;

[0054] 2. Lifting frame; 21. Lifting base; 22. First carrying rod; 221. Clamping slot; 222. Push rod; 223. Elastic sheet; 224. Giving slot; 225. Push plate; 226. Second return spring; 23. Second carrying rod; 231. First return spring; 24. Connecting plate; 241. Fixing slot; 25. Driving assembly; 251. Abutting block; 252. Sliding rod; 253. First slide slot; 254. Second slide slot; 255. Fixing block; 256. Electric telescopic rod; 26. Buckle assembly; 261. Clamping block; 262. Buckle spring;

[0055] 3. Feeding and conveying mechanism; 31. Feeding and conveying device; 32. Feeding rack;

[0056] 4. Discharge conveying mechanism; 41. Discharge conveying device; 42. Discharge carrier;

[0057] 5. Centering mechanism; 51. Centering plate; 52. Rotating motor; 53. Travel switch. DETAILED DESCRIPTION

[0058] The following is combined with Figure 1-7 This application is described in further detail.

[0059] The embodiment of the present application discloses a fork circulation hoist.

[0060] Reference Figure 1 A fork circulation hoist includes a hoist body 1, a feeding conveying mechanism 3, a discharging conveying mechanism 4, a loading box 11 and a lifting frame 2.

[0061] The lifting frame 2 is installed on the hoist body 1. There are multiple lifting frames 2. The hoist body 1 can drive the lifting frame 2 to move while always keeping the lifting frame 2 horizontal. The hoist body 1 is existing technology.

[0062] The feed conveying mechanism 3 is arranged on one side of the elevator body 1. The feed conveying mechanism 3 includes a feed conveying device 31 and a feed carrier 32. The feed conveying device 31 and the feed carrier 32 are both fixedly mounted on the elevator body 1. The feed conveying device 31 and the feed carrier 32 both use roller conveying equipment. The feed conveying device 31 and the feed carrier 32 are both prior art. The discharge conveying mechanism 4 is arranged on the other side of the elevator body 1. The discharge conveying mechanism 4 includes a discharge conveying device 41 and a discharge carrier 42. The discharge conveying device 41 and the discharge carrier 42 are both fixedly mounted on the elevator body 1. The discharge conveying device 41 and the discharge carrier 42 both use roller conveying equipment. The discharge conveying device 41 and the discharge carrier 42 are both prior art.

[0063] A plurality of carrier boxes 11 are provided, and the carrier boxes 11 are used to store materials. The elevator body 1 , the feeding conveying mechanism 3 and the discharging conveying mechanism 4 are all used to convey the carrier boxes 11 .

[0064] When using a fork circulation elevator, the feed conveying device 31 conveys the carrier box 11 with the goods to the feed carrier 32, and the elevator body 1 drives the lifting frame 2 to move. The lifting frame 2 passes through the gap between the conveying rollers of the feed carrier 32 and abuts against the carrier box 11. Then the elevator body 1 continues to drive the lifting frame 2 to move, and the lifting frame 2 passes through the gap between the conveying rollers of the discharge carrier 42. The carrier box 11 stays on the discharge carrier 42, and then the carrier box 11 is transported to the discharge conveying device 41 through the discharge carrier 42, completing the lifting and transportation of the goods.

[0065] Reference Figure 1 、 Figure 3 and Figure 6 The lifting frame 2 includes a lifting base 21 , a first carrying rod 22 , a second carrying rod 23 , a connecting plate 24 and a driving assembly 25 .

[0066] The lifting base 21 is mounted on the hoist body 1. The hoist body 1 drives the lifting base 21 to move, and the hoist body 1 ensures that the lifting base 21 remains horizontal. A first carrying rod 22 is fixedly mounted on the lifting base 21. Multiple first carrying rods 22 are provided. A second carrying rod 23 is inserted through the lifting base 21. The axes of the first carrying rod 22 and the second carrying rod 23 are coplanar.

[0067] The connecting plate 24 is fixedly mounted on the end of the second carrier rod 23 away from the lifting base 21. A fixing slot 241 is defined in the connecting plate 24, and the end of the first carrier rod 22 away from the lifting base 21 can be inserted into the fixing slot 241. The first carrier rod 22, the second carrier rod 23, and the connecting plate 24 can all pass through the gaps between the conveyor rollers of the infeed carrier 32 and the gaps between the conveyor rollers of the outfeed carrier 42.

[0068] The driving assembly 25 is installed in the lifting base 21 . The driving assembly 25 is connected to the second carrying rod 23 . The driving assembly 25 can drive the second carrying rod 23 to rotate and slide on the lifting base 21 .

[0069] When the lifting frame 2 takes the carrier box 11 located on the feed carrier 32, the second carrier rod 23 is controlled by the driving component 25 so that the axis of the connecting plate 24 is in a vertical state. The lifting machine body 1 drives the lifting base 21 to move, so that the first carrier rod 22, the second carrier rod 23 and the connecting plate 24 pass through the gap between the conveying rollers of the feed carrier 32, and the carrier box 11 abuts against the first carrier rod 22 and the second carrier rod 23.

[0070] Afterwards, the driving component 25 first controls the second carrying rod 23 to rotate so that the axis of the connecting plate 24 is in a horizontal state. The driving component 25 then controls the second carrying rod 23 to move in the direction close to the lifting base 21, so that the first carrying rod 22 is clamped in the fixing groove 241. The end of the first carrying rod 22 away from the lifting base 21 and the end of the second carrying rod 23 away from the lifting base 21 are fixed together based on the connecting plate 24, thereby improving the structural stability of the first carrying rod 22 and the second carrying rod 23, avoiding deformation of the connection between the first carrying rod 22 and the second carrying rod 23 and the lifting base 21 due to long-term transportation of the carrying box 11 and goods, and improving the stability of the lifting frame 2 in transporting goods.

[0071] On the contrary, when the lifting frame 2 is needed to place the carrier box 11 on the discharge carrier 42, the driving component 25 controls the second carrier rod 23 to move away from the lifting base 21, so that the first carrier rod 22 is disengaged from the fixed groove 241, and then the driving component 25 controls the second carrier rod 23 to rotate, so that the axis of the connecting plate 24 is in a vertical state, so that the first carrier rod 22, the second carrier rod 23 and the connecting plate 24 pass through the gap between the conveying rollers of the discharge carrier 42, and the carrier box 11 is placed on the discharge carrier 42, completing the discharge of the carrier box 11.

[0072] Reference Figure 2 、 Figure 5 and Figure 6 The driving assembly 25 includes a contact block 251 , a sliding rod 252 , a first sliding groove 253 , a second sliding groove 254 , a fixing block 255 and an electric telescopic rod 256 .

[0073] A guide groove is defined in the second carrying rod 23 , and the abutting block 251 is slidably installed in the second carrying rod 23 by being slidably installed in the guide groove.

[0074] One end of the sliding rod 252 is inserted into the second carrier rod 23 and fixedly connected to the abutment block 251. The other end of the sliding rod 252 is disposed within the lifting base 21. A first chute 253 is provided on the sliding rod 252 and is arc-shaped. A second chute 254 is provided on the sliding rod 252 and is a straight groove, with the first chute 253 and the second chute 254 communicating with each other. A fixed block 255 is fixedly mounted within the lifting base 21 and is capable of sliding relative to each other within the first chute 253 and the second chute 254. An electric telescopic rod 256 is fixedly mounted within the lifting base 21. The movable end of the electric telescopic rod 256 is coaxial and rotationally connected to the sliding rod 252, and the axis of the electric telescopic rod 256 is parallel to the axis of the second carrier rod 23.

[0075] A first return spring 231 is sleeved on the second carrying rod 23, one end of the first return spring 231 is fixedly connected to the second carrying rod 23, and the other end of the first return spring 231 is fixedly connected to the lifting base 21. The first return spring 231 always applies a force to the second carrying rod 23 away from the lifting base 21.

[0076] In the initial state, the axis of the connecting plate 24 is in a vertical state, and the hoist body 1 drives the lifting base 21 to move, so that the first carrying rod 22, the second carrying rod 23 and the connecting plate 24 pass through the gap between the conveying rollers of the feed carrier 32, and the carrier box 11 abuts against the first carrying rod 22 and the second carrying rod 23. Then the hoist body 1 drives the lifting base 21 away from the feed carrier 32, and the movable end of the electric telescopic rod 256 is shortened. The movable end of the electric telescopic rod 256 drives the sliding rod 252 to move in the direction away from the second carrying rod 23, and the fixed block 255 slides in the first slide groove 253. The fixed block 255 slides from the end of the first slide groove 253 away from the second slide groove 254 to the end of the first slide groove 253 close to the second slide groove 254. With the cooperation of the fixed block 255 and the first slide groove 253, the sliding rod 252 rotates 90 degrees.

[0077] The sliding rod 252 rotates, thereby driving the abutment block 251 to rotate. The abutment block 251 rotates, which in turn drives the second carrier rod 23 to rotate. The second carrier rod 23 rotates, which in turn drives the connecting plate 24 to rotate, causing the axis of the connecting plate 24 to rotate to a horizontal position. When the fixed block 255 slides from one end of the first slide slot 253 to the other end, the abutment block 251 abuts against the end of the second carrier rod 23 away from the connecting plate 24.

[0078] Afterwards, the movable end of the electric telescopic rod 256 continues to shorten, and the fixed block 255 slides into the second sliding groove 254. The movable end of the electric telescopic rod 256 drives the sliding rod 252 to move, and the movement of the sliding rod 252 drives the abutment block 251 to move. The movement of the abutment block 251 drives the second carrying rod 23 to move, so that the second carrying rod 23 moves toward the direction close to the lifting base 21. The movement of the second carrying rod 23 drives the connecting plate 24 to move, so that the end of the first carrying rod 22 away from the lifting base 21 abuts against the connecting plate 24 and is clamped in the fixing groove 241.

[0079] The first carrying rod 22 is connected to one end of the lifting base 21 and the second carrying rod 23 is connected to the other end of the lifting base 21, thereby improving the structural stability of the first carrying rod 22 and the second carrying rod 23 and avoiding deformation of the connection between the first carrying rod 22 and the second carrying rod 23 and the lifting base 21 due to long-term transportation of the carrying box 11 and goods.

[0080] On the contrary, when the lifting frame 2 is needed to place the cargo box 11 on the discharge cargo rack 42, the length of the electric telescopic rod 256 is extended, and under the action of the first return spring 231, the second cargo rod 23 moves away from the lifting base 21, and the fixed block 255 slides from the end of the second slide groove 254 away from the first slide groove 253 to the end of the second slide groove 254 close to the first slide groove 253, and the first cargo rod 22 disengages from the fixed groove 241.

[0081] Afterwards, the length of the electric telescopic rod 256 continues to extend, and the fixed block 255 slides into the first slide groove 253. The fixed block 255 slides from the end of the first slide groove 253 close to the second slide groove 254 to the end of the first slide groove 253 away from the second slide groove 254. With the cooperation of the fixed block 255 and the first slide groove 253, the sliding rod 252 rotates, so that the axis of the connecting plate 24 rotates to a vertical state, so that the first carrier rod 22, the second carrier rod 23 and the connecting plate 24 can pass through the gap between the conveying rollers of the discharging carrier rack 42, and the carrier box 11 is placed on the discharging carrier rack 42, completing the discharging work of the carrier box 11.

[0082] Reference Figure 3 、 Figure 4 and Figure 7 A snap assembly 26 is provided on the connecting plate 24 , and the snap assembly 26 includes a snap block 261 and a snap spring 262 .

[0083] The clamping block 261 is in the shape of a cone. Two clamping blocks 261 are symmetrically and slidably installed on the side wall of the fixing groove 241. One end of the clamping spring 262 is fixedly connected to the clamping block 261, and the other end of the clamping spring 262 is fixedly connected to the connecting plate 24. The clamping spring 262 always applies a force on the clamping block 261 away from the clamping spring 262.

[0084] A locking slot 221 is defined at one end of the first carrying rod 22 away from the lifting base 21 , and the locking block 261 can be locked in the locking slot 221 .

[0085] After the first carrying rod 22 is engaged in the fixing slot 241 , the end of the clamping block 261 away from the clamping spring 262 is engaged in the clamping slot 221 under the action of the clamping spring 262 , thereby improving the stability of the first carrying rod 22 in the fixing slot 241 .

[0086] Reference Figure 3 and Figure 4 A push rod 222 is inserted into the first carrying rod 22 and is capable of abutting the connecting plate 24. Two symmetrically arranged elastic pieces 223 are fixedly mounted on the push rod 222. The carrying box 11 can abut between the two elastic pieces 223. The first carrying rod 22 is provided with two symmetrically arranged clearance grooves 224, and the elastic pieces 223 are slidably mounted within the clearance grooves 224.

[0087] The two elastic pieces 223 abut against and clamp the carrier box 11, ensuring that the carrier box 11 is stably abutted against the first carrier bar 22. When the connecting plate 24 moves toward and abuts the first carrier bar 22, the push rod 222 abuts the connecting plate 24 and moves toward one end of the lifting base 21. The movement of the push rod 222 drives the elastic pieces 223 to move synchronously, and the movement of the elastic pieces 223 drives the carrier box 11 to move synchronously, moving the carrier box 11 toward the lifting base 21. This reduces the distance between the center of gravity of the carrier box 11 and the lifting base 21, reduces the torque of the first and second carrier bars 22, 23, and thus reduces the deformation of the first and second carrier bars 22, 23 caused by the gravity of the carrier box 11.

[0088] Reference Figure 2 and Figure 5 A centering mechanism 5 is installed on the lifting base 21 , and the centering mechanism 5 includes a centering plate 51 , a rotating motor 52 and a travel switch 53 .

[0089] Two centering plates 51 are provided, and the two centering plates 51 are symmetrically and rotatably mounted on the lifting base 21. The fixed end of the rotating motor 52 is fixedly mounted in the lifting base 21. The output shaft of the rotating motor 52 is passed through the lifting base 21. The output shaft of the rotating motor 52 is fixedly connected to the centering plate 51, and the limit switch 53 is electrically connected to the rotating motor 52.

[0090] One end of the push rod 222 away from the connecting plate 24 is fixedly connected to a push plate 225 , and the push plate 225 is connected to the travel switch 53 .

[0091] A second return spring 226 is fixedly connected to the push plate 225 . One end of the second return spring 226 away from the push plate 225 is fixedly mounted on the lifting base 21 . The second return spring 226 always applies a force to the push plate 225 in a direction close to the lifting base 21 .

[0092] When the push rod 222 abuts against the connecting plate 24 and moves toward one end close to the lifting base 21, the push rod 222 moves and drives the push plate 225 to move synchronously until the connecting plate 24 abuts against the first loading rod 22, the push rod 222 and the push plate 225 stop moving, and the push plate 225 triggers the limit switch 53 to turn on. The limit switch 53 controls the rotating motor 52 to turn on. The rotating motor 52 works and drives the centering plate 51 to rotate, so that the centering plate 51 abuts against the loading box 11.

[0093] The two centering plates 51 work together to adjust the center of gravity of the carrier box 11 so that the gravity of the carrier box 11 is evenly applied to the first carrier bar 22 and the second carrier bar 23. This prevents the inertia of the feed conveyor mechanism 3 from causing the center of gravity of the carrier box 11 to shift when transporting the carrier box 11, resulting in uneven force on the first carrier bar 22 and the second carrier bar 23, and thus causing deformation of the first carrier bar 22 and the second carrier bar 23.

[0094] During the transportation of the cargo box 11 by the lifting frame 2, the spring sheet and the centering plate 51 work together to stabilize the position of the cargo box 11 on the lifting frame 2, thereby preventing the cargo box 11 from being displaced during the lifting and transportation process, and improving the stability of a fork circulation lift.

[0095] The implementation principle of a fork circulation elevator in the embodiment of the present application is as follows: when using a fork circulation elevator, the feed conveying device 31 conveys the cargo box 11 placed thereon to the feed carrier 32, the elevator body 1 drives the lifting frame 2 to move, the lifting frame 2 passes through the gap between the conveying rollers of the feed carrier 32 and abuts against the cargo box 11, then the elevator body 1 continues to drive the lifting frame 2 to move, the lifting frame 2 passes through the gap between the conveying rollers of the discharge carrier 42, the cargo box 11 rests on the discharge carrier 42, and then the discharge carrier 42 transports the cargo box 11 to the discharge conveying device 41, completing the lifting and transportation of the cargo. The lifting and transportation of the cargo box 11 by the lifting frame 2 stabilizes the position of the cargo box 11 on the lifting frame 2, prevents displacement of the cargo box 11 during the lifting and transportation process, and improves the stability of the fork circulation elevator.

[0096] When the lifting frame 2 takes the carrier box 11 located on the infeed carrier 32, the first carrier rod 22 is clamped in the fixing groove 241 by the driving assembly 25. The end of the first carrier rod 22 away from the lifting base 21 and the end of the second carrier rod 23 away from the lifting base 21 are fixed together based on the connecting plate 24, thereby improving the structural stability of the first carrier rod 22 and the second carrier rod 23, avoiding deformation of the connection between the first carrier rod 22 and the second carrier rod 23 and the lifting base 21 due to long-term transportation of the carrier box 11 and goods, and improving the stability of the lifting frame 2 in transporting goods. When the lifting frame 2 is required to place the carrier box 11 on the discharge carrier 42, the first carrier rod 22 is disengaged from the fixing groove 241 by the driving assembly 25, so that the first carrier rod 22, the second carrier rod 23 and the connecting plate 24 pass through the gap between the conveying rollers of the discharge carrier 42, completing the discharge of the carrier box 11.

[0097] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A fork circulation hoist, characterized in that: include: Hoist body (1); A feeding and conveying mechanism (3), the feeding and conveying mechanism (3) being arranged on one side of the elevator body (1); a discharge conveying mechanism (4), the discharge conveying mechanism (4) being arranged on the other side of the elevator body (1); A material carrying box (11), the material carrying box (11) is used to store materials, and the elevator body (1), the feeding conveying mechanism (3) and the discharging conveying mechanism (4) are all used to convey the material carrying box (11); A lifting frame (2) of at least one group, wherein the lifting frame (2) is mounted on the hoist body (1), and the lifting frame (2) comprises: A lifting base (21), the lifting base (21) being mounted on the lifting machine body (1); No less than one first carrying rod (22), wherein the first carrying rod (22) is fixedly mounted on the lifting base (21); a second carrying rod (23), the second carrying rod (23) being passed through the lifting base (21); a connecting plate (24), the connecting plate (24) being fixedly mounted on an end of the second carrying rod (23) away from the lifting base (21), the connecting plate (24) being provided with a fixing groove (241), the first carrying rod (22) being capable of being embedded in the fixing groove (241); a driving assembly (25), the driving assembly (25) being installed in the lifting base (21), the driving assembly (25) being connected to the second carrying rod (23), and the driving assembly (25) being capable of driving the second carrying rod (23) to rotate and slide on the lifting base (21); A push rod (222) is provided inside the first object carrying rod (22), and the push rod (222) is capable of abutting against the connecting plate (24); Two symmetrically arranged elastic sheets (223) are fixedly mounted on the push rod (222); The first object carrying rod (22) is provided with two symmetrically arranged paving grooves (224), and the elastic piece (223) is slidably mounted in the paving grooves (224).

2. A fork circulation hoist according to claim 1, characterized in that: The driving assembly (25) comprises: an abutment block (251), the abutment block (251) being slidably mounted in the second object carrying rod (23); a sliding rod (252), one end of the sliding rod (252) being inserted into the second object-carrying rod (23), and the sliding rod (252) being fixedly connected to the abutting block (251); A first sliding groove (253), wherein the first sliding groove (253) is provided on the sliding rod (252), and the first sliding groove (253) is arc-shaped; a second chute (254), the second chute (254) being provided on the sliding rod (252), the second chute (254) being a straight chute, the first chute (253) being in communication with the second chute (254); A fixed block (255), wherein the fixed block (255) is fixedly installed in the lifting base (21), and the fixed block (255) is capable of sliding in the first sliding groove (253) and the second sliding groove (254).

3. A fork circulation hoist according to claim 2, characterized in that: An electric telescopic rod (256) is fixedly installed in the lifting base (21), and the movable end of the electric telescopic rod (256) is rotatably connected to the sliding rod (252).

4. A fork circulation hoist according to claim 1, characterized in that: A first return spring (231) is sleeved on the second carrying rod (23), one end of the first return spring (231) is fixedly connected to the second carrying rod (23), and the other end of the first return spring (231) is fixedly connected to the lifting base (21).

5. The fork circulation hoist according to claim 1, characterized in that: A buckle assembly (26) is provided on the connecting plate (24), and the buckle assembly (26) comprises: a clamping block (261), the clamping block (261) being slidably mounted on a side wall of the fixing groove (241); A snap spring (262), one end of the snap spring (262) is fixedly connected to the clamping block (261), and the other end of the snap spring (262) is fixedly connected to the connecting plate (24).

6. A fork circulation hoist according to claim 5, characterized in that: A clamping slot (221) is provided at one end of the first object carrying rod (22) away from the lifting base (21), and the clamping block (261) can be clamped in the clamping slot (221).

7. The fork circulation hoist according to claim 1, characterized in that: A centering mechanism (5) is installed on the lifting base (21), and the centering mechanism (5) comprises: Two centering plates (51), the two centering plates (51) are symmetrically and rotatably mounted on the lifting base (21); A rotating motor (52), wherein a fixed end of the rotating motor (52) is fixedly mounted in the lifting base (21), an output shaft of the rotating motor (52) is passed through the lifting base (21), and the output shaft of the rotating motor (52) is fixedly connected to the centering plate (51); A travel switch (53), wherein the travel switch (53) is electrically connected to the rotating motor (52).

8. The fork circulation hoist according to claim 7, characterized in that: One end of the push rod (222) away from the connecting plate (24) is fixedly connected to a push plate (225), and the push plate (225) is connected to the travel switch (53); A second return spring (226) is fixedly connected to the push plate (225), and one end of the second return spring (226) away from the push plate (225) is fixedly mounted on the lifting base (21).

9. The fork circulation hoist according to claim 1, characterized in that: The feed conveying mechanism (3) comprises a feed conveying device (31) and a feed carrier (32), and the feed conveying device (31) and the feed carrier (32) are both fixedly mounted on the elevator body (1); The discharge conveying mechanism (4) comprises a discharge conveying device (41) and a discharge carrier (42), and both the discharge conveying device (41) and the discharge carrier (42) are fixedly mounted on the elevator body (1).

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