Unloading device for forklift

Abstract

The present invention discloses a material unloading device for a forklift, which relates to the technical field of material unloading, and comprises a fixed base device, a material storage device is arranged above the fixed base device, a material feeding device is arranged inside the material storage device, the material storage device comprises a first shell and a guide part, the material feeding device comprises an electric roller and a transmission cylinder, the two ends of the electric roller are embedded and rotatably mounted on the bottom of the inner wall of the first shell, the two ends of the transmission cylinder are rotatably mounted in an arc-shaped limit groove, and a conveyor belt is arranged outside the electric roller and the transmission cylinder. The present invention controls the transmission cylinder to move in the arc-shaped limit groove by a servo motor and a counterweight block, and the components such as the electric roller, the transmission cylinder and the conveyor belt cooperate, so that the material in the material storage space can be discharged outward without tilting the first shell, and the inclination angle and the conveying speed of the conveyor belt can be adjusted, and the speed of the material in the material storage space to discharge outward can be dynamically adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of unloading, in particular to an unloading device for a forklift. Background Art

[0002] Forklift unloading is a crucial link in logistics and warehousing management. In the existing technology, when using a forklift to unload goods in a unloading hopper, most of them use hydraulic rods or movable parts to make the unloading hopper rotate around a certain axis. The unloading hopper is in a tilted state to allow the goods in the unloading hopper to be discharged outward. During the tipping process, the center of gravity of the unloading hopper will change all the time, and it is difficult to control the balance of the unloading hopper. Once the balance of the unloading hopper is broken, the unloading hopper is easy to slip from the spline, and then a safety accident occurs.

[0003] The utility model with authorization announcement number CN218370296U discloses a forklift-specific unloading hopper. The utility model can realize vertical lifting and tilting unloading of the hopper through the insertion control of the fixed tube and the movable tube by the forklift without manual intervention. The limit block and the limit plate limit the movable tube, allowing it to perform flipping movement within a certain range. The operation difficulty is low, the labor intensity of workers is reduced, the structure is stable, not easy to damage, and the construction efficiency is high.

[0004] The above-mentioned device can achieve the operation of unloading the discharge hopper, but the device still unloads around a rotating shaft. The entire discharge hopper is in an unbalanced state, which is prone to safety hazards such as tipping. It lacks a balance adjustment component and cannot adjust the speed of the outgoing material in the discharge hopper. It is inconvenient to unload a large amount of goods in a short time. Therefore, a discharge device that can adjust the discharge speed and dynamically control the balance is needed. Summary of the invention

[0005] The object of the present invention is to provide a forklift unloading device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A material unloading device for a forklift, comprising a fixed base device, characterized in that a material storage device is arranged above the fixed base device, and a material conveying device is arranged inside the material storage device;

[0008] The material storage device comprises a first shell and a guide portion, wherein an arc-shaped limiting groove cooperating with the material feeding device is provided on the front and rear sides of the inner wall of the first shell below the guide portion;

[0009] The feeding device comprises an electric drum and a transmission drum, two ends of the electric drum are embedded and installed at the bottom of the inner wall of the first shell, two ends of the transmission drum are installed on the limit sliding blocks in the arc-shaped limit groove, and a conveying belt is arranged on the outer side of the electric drum and the transmission drum, and fixed blocks are fixedly arranged on the front and rear sides above the first shell, and a rotating shaft is rotatably arranged between the two fixed blocks, and spiral pulleys are fixedly arranged on both ends of the rotating shaft, and a servo motor is fixedly arranged on one side of the rotating shaft above the first shell, and a locking mechanism is arranged in the servo motor, and the output shaft of the servo motor is connected to the rotating shaft through a gear transmission mechanism, and bearings are fixedly installed on both ends of the rotating shaft of the transmission drum, and a connecting ring is fixedly sleeved on the outer ring of the bearing, and a first groove is opened on the front and rear sides of the upper end face of the first shell above the guide part, and a counterweight block is slidably arranged in the first groove, and the connecting ring and the counterweight block are connected by a cable, and the middle part of the cable is spirally wound around the outer wall of the spiral pulley.

[0010] As a further solution of the present invention: the fixed base device includes a base, two sockets corresponding to the forklift teeth are opened in the base, one end of the two sockets is located on the side wall of the base and a first vertical groove corresponding to the forklift teeth is opened, and a plurality of clamping devices perpendicular to the direction of the sockets are arranged in the base, and the clamping device includes a bidirectional synchronous hydraulic cylinder, and clamping claws are fixedly arranged at both ends of the bidirectional synchronous hydraulic cylinder.

[0011] As a further solution of the present invention: a second vertical groove cooperating with the first vertical groove is formed on the outer side wall of the first shell, and a material storage space is formed in the first shell.

[0012] As a further solution of the present invention: a discharging device is arranged on the material storage device, a through hole is opened on the side of the first shell side panel away from the servo motor, the discharging device is arranged in the through hole, the discharging device includes a gate and a plurality of lifting electric push rods, the lower end surface of the gate is an inclined surface, the lifting electric push rods are embedded in the side panel of the first shell and the end of the output shaft of the lifting electric push rods is fixedly connected to the upper end surface of the gate.

[0013] As a further solution of the present invention: a balancing device is arranged between the fixed base device and the material storage device, and the balancing device includes a second shell and two rotating seats. The side panel of the second shell is provided with a third vertical groove that cooperates with the first vertical groove and the second vertical groove. A spirit level is fixedly arranged in the middle of the lower end surface of the second shell. Balancing units are arranged in the second shell on both sides of the spirit level. The rotating seat is located outside the balancing unit and the upper end surface of the base is connected to the lower end surface of the second shell through the rotating seat.

[0014] As a further solution of the present invention: hydraulic buffer rods are fixedly provided at the four corners of the upper end surface of the base, and the upper end surface of the hydraulic buffer rods is in contact with the lower end surface of the second shell.

[0015] As a further solution of the present invention: the balancing unit includes a gear pump, a first balancing tank and a second balancing tank, the gear pump is connected to the first balancing tank through a first connecting pipe, a first solenoid valve is arranged on the first connecting pipe, the gear pump is connected to the second balancing tank through a second connecting pipe, a second solenoid valve is arranged on the second connecting pipe, vents are arranged on the first balancing tank and the second balancing tank, and the vents pass through the side wall of the second shell to communicate with the outside world.

[0016] As a further solution of the present invention: universal wheels are respectively arranged at the four corners of the lower end surface of the base, and the universal wheels have a locking mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The forklift teeth are initially fixed through two sockets and the first vertical groove. The two-way synchronous hydraulic cylinder pushes the clamping claw to extend, so that the clamping device expands from the center to the outside, clamps the forklift teeth, and makes the fixed base device in the center of the two forklift teeth to avoid the deviation of the whole device, which is convenient for the smooth unloading work. The clamping device can also lock the teeth on the forklift to prevent the whole device from slipping off the forklift teeth (due to the change of the center of gravity during unloading), thereby improving the safety of the device;

[0019] 2. The material is stored in the storage space, and the guide part guides the material, making it easier for the material to slide to the top of the feeding device. At the same time, the arc-shaped limit groove limits the feeding device, thereby improving the unloading efficiency of the entire device;

[0020] 3. The servo motor and the counterweight block are used to control the transmission cylinder to move in the arc-shaped limit groove. The electric drum, the transmission drum and the conveyor belt and other components cooperate. The material in the storage space can be discharged outward without tilting the first shell. The inclination angle and the conveying speed of the conveyor belt can be adjusted, and the discharge speed of the material in the storage space can be dynamically adjusted to improve the practicality of the device for material unloading. The bearings, connecting rings, cables, fixed blocks, spiral pulleys and counterweight blocks are symmetrically arranged, so that the device is balanced along the long axis direction of the electric drum, so that the rotation load of the rotating shaft is reduced, the service life of the device is improved, and the control accuracy of the connecting ring and the counterweight block is also improved;

[0021] 4. The balance state of the material storage device and the balancing device is monitored by a level meter, which facilitates the balancing unit to balance the material storage device and the balancing device. The balancing device plays a role in lowering the center of gravity of the entire device, so that the forklift can maintain better balance performance and higher stability during transportation, thereby improving the safety of the device. The hydraulic buffer rod plays a buffering role, delaying the rotation of the fixed base device and the second shell, and reserving time for the balancing unit to balance. The hydraulic buffer rod also plays a limiting role. When the balancing unit cannot be trimmed, the hydraulic buffer rod serves the purpose of support. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0023] Figure 2 It is a schematic diagram of the top structure of embodiment 1 of the present invention.

[0024] Figure 3 Embodiment 1 of the present invention Figure 2 Schematic diagram of the three-dimensional structure of the cross section at AA in the middle.

[0025] Figure 4 Embodiment 1 of the present invention Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0026] Figure 5 Embodiment 1 of the present invention Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the feeding device in Example 1 of the present invention.

[0028] Figure 7 This is an exploded view of the fixed base device in Example 1 of the present invention.

[0029] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of Example 1 of the present invention during operation.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0031] Fig.10 It is a schematic cross-sectional structure diagram of embodiment 2 of the present invention.

[0032] Fig.11 Embodiment 2 of the present invention Fig.10 Schematic diagram of the local enlarged structure at point C in the middle.

[0033] Fig.12 It is a schematic diagram of the three-dimensional structure of the balancing device in Example 2 of the present invention.

[0034] Notes on reference numerals: 100, fixed base device; 101, base; 102, clamping device; 1021, bidirectional synchronous hydraulic cylinder; 1022, clamping claw; 103, jack; 104, first vertical groove; 105, universal wheel; 200, material storage device; 201, first shell; 202, second vertical groove; 203, material storage space; 204, guide part; 205, first groove; 206, arc-shaped limit groove; 300, feeding device; 301, electric drum; 302, transmission cylinder; 303, conveying belt; 304, bearing; 305, connecting ring; 306, cable; 307, fixing block; 308, Rotating shaft; 309, spiral pulley; 310, gear transmission mechanism; 311, servo motor; 312, counterweight; 400, discharging device; 401, gate; 402, lifting electric push rod; 500, balancing device; 501, second shell; 502, third vertical groove; 503, balancing unit; 5031, gear pump; 5032, first connecting pipe; 5033, first solenoid valve; 5034, first balancing bin; 5035, second connecting pipe; 5036, second solenoid valve; 5037, second balancing bin; 5038, vent; 504, level; 505, rotating seat; 506, hydraulic buffer rod. DETAILED DESCRIPTION

[0035] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component may be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0036] Example 1

[0037] See also Figures 1 to 8 In an embodiment of the present invention, a material unloading device for a forklift includes a fixed base device 100 , a material storage device 200 is arranged above the fixed base device 100 , and a material feeding device 300 is arranged inside the material storage device 200 .

[0038] See also Figure 1 , Figure 3 and Figure 5The fixed base device 100 includes a base 101, and two sockets 103 corresponding to the forklift teeth are opened in the base 101. One end of the two sockets 103 is located on the side wall of the base 101 and a first vertical groove 104 corresponding to the forklift teeth is opened. A plurality of clamping devices 102 perpendicular to the sockets 103 are arranged in the base 101. The clamping device 102 includes a bidirectional synchronous hydraulic cylinder 1021, and the two ends of the bidirectional synchronous hydraulic cylinder 1021 are fixed with clamping claws 1022. The first vertical groove 104 preliminarily fixes the forklift teeth, and the bidirectional synchronous hydraulic cylinder 1021 pushes the clamping claw 1022 to extend, so that the clamping device 102 expands from the center to the outside, clamps the forklift teeth, and allows the fixed base device 100 to be located at the center position of the two forklift teeth to avoid the entire device from shifting, facilitating the smooth progress of subsequent unloading work. The clamping device 102 can also lock the teeth on the forklift to prevent the entire device from sliding off the forklift teeth (due to the change of center of gravity during unloading), thereby improving the safety of the device.

[0039] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The material storage device 200 includes a first shell 201, and a second vertical groove 202 cooperating with the first vertical groove 104 is opened on the outer wall of the first shell 201. A material storage space 203 is opened in the first shell 201. A guide part 204 is arranged in the first shell 201. An arc-shaped limiting groove 206 cooperating with the feeding device 300 is opened on the front and rear sides of the inner wall of the first shell 201 below the guide part 204. The material is stored in the material storage space 203, and the guide part 204 plays a role in guiding the material, so that the material can slide to the top of the feeding device 300. At the same time, the arc-shaped limiting groove 206 limits the feeding device 300, thereby improving the unloading efficiency of the entire device.

[0040] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The feeding device 300 includes an electric roller 301 and a transmission cylinder 302. The two ends of the electric roller 301 are embedded and installed at the bottom of the inner wall of the first shell 201. The two ends of the transmission cylinder 302 are installed on the limiting slider in the arc-shaped limiting groove 206. A conveying belt 303 is arranged on the outer side of the electric roller 301 and the transmission cylinder 302. Fixed blocks 307 are fixedly arranged on the front and rear sides of the upper part of the first shell 201, and a rotating shaft 308 is rotatably arranged between the two fixed blocks 307. Spiral pulleys 309 are fixedly arranged at both ends of the rotating shaft 308. One side of the rotating shaft 308 is fixedly arranged. A servo motor 311 is fixedly arranged above the first housing 201, and a locking mechanism is arranged inside the servo motor 311. The output shaft of the servo motor 311 is connected to the rotating shaft 308 through a gear transmission mechanism 310. Bearings 304 are fixedly installed at both ends of the rotating shaft of the transmission cylinder 302. A connecting ring 305 is fixedly sleeved on the outer ring of the bearing 304. A first groove 205 is opened on the front and rear sides of the upper end face of the first housing 201 above the guide part 204. A counterweight block 312 is slidably arranged in the first groove 205. The connecting ring 305 and the counterweight block are connected by a cable 306. 312 is connected, the middle part of the cable 306 is spirally wound on the outer wall of the spiral pulley 309, and the friction between the cable 306 and the spiral groove on the spiral pulley 309 is used to control the connecting ring 305 and the counterweight block 312. The bearing 304, the connecting ring 305, the cable 306, the fixed block 307, the spiral pulley 309 and the counterweight block 312 are symmetrically arranged, and the driving cylinder 302 is controlled to move in the arc-shaped limit groove 206 by the servo motor 311 and the counterweight block 312. The electric drum 301, the driving cylinder 302 and the conveying belt 303 and other components cooperate, and there is no need to make the first shell 201 The material in the storage space 203 can be discharged outward by tilting, and the tilt angle and conveying speed of the conveying belt 303 can be adjusted, the material discharge speed of the storage space 203 can be dynamically adjusted, and the practicality of the device for material unloading is improved. The bearing 304, connecting ring 305, cable 306, fixed block 307, spiral pulley 309 and counterweight block 312 are symmetrically arranged, so that the device can be balanced along the long axis direction of the electric drum 301, so that the rotation load of the rotating shaft 308 is reduced, the service life of the device is improved, and the control accuracy of the connecting ring 305 and the counterweight block 312 is also improved.

[0041] See also Figure 1 , Figure 3 and Figure 4A discharging device 400 is arranged on the material storage device 200, a through hole is opened on the side of the first shell 201 side panel away from the servo motor 311, and the discharging device 400 is arranged in the through hole, and the discharging device 400 includes a gate 401 and a plurality of lifting electric push rods 402, the lower end surface of the gate 401 is an inclined surface, the lifting electric push rods 402 are embedded in the side panel of the first shell 201, and the output shaft end of the lifting electric push rod 402 is fixedly connected to the upper end surface of the gate 401.

[0042] When the device is in use, when the material storage space 203 is full of materials, the transmission cylinder 302 is in the lowest position, and the forklift sends the tooth into the socket 103. When the forklift tooth vertical bracket is in line with the first vertical groove 104 and the second vertical groove 202, the clamping device 102 is started, and the two-way synchronous hydraulic cylinder 1021 drives the clamping claws 1022 at both ends to move from the center to the outside, so that the two clamping claws 1022 clamp the forklift tooth, and make the fixed base device 100 and the material storage device 200 in the middle position between the forklift teeth. When unloading is required, a plurality of lifting electric push rods 402 are started to rise, drive the gate 401 to open, open the locking mechanism in the electric roller 301 and the servo motor 311, and let the transmission cylinder 302 weigh on the counterweight block 312. The conveyor belt 303 drives the material to be discharged outwardly under the action of the force. In addition, the counterweight block 312 plays a role in adjusting the balance of the storage device 200 to prevent the center of gravity of the fixed base device 100 and the storage device 200 from being biased toward the side of the discharge device 400. When it is necessary to speed up the discharge speed of the material in the storage space 203, the rotation speed of the electric roller 301 is increased, the servo motor 311 is started, and the spiral pulley 309 is driven to rotate, and the counterweight block 312 is further lowered, so that the transmission cylinder 302 rises to the highest point in the arc-shaped limit groove 206, thereby improving the discharge efficiency of the material in the storage space 203. In this way, the discharge speed of the device can be dynamically adjusted, which is suitable for the transportation of different materials, improves the applicable scope of the device, and achieves the purpose of multiple uses of one object.

[0043] Example 2

[0044] See also Figures 9 to 12On the basis of Example 1, universal wheels 105 are respectively arranged at the four corners of the lower end surface of the base 101, and the universal wheels 105 have a locking mechanism. A balancing device 500 is arranged between the fixed base device 100 and the storage device 200, and the balancing device 500 includes a second shell 501 and two rotating seats 505. The side panel of the second shell 501 is provided with a third vertical groove 502 that cooperates with the first vertical groove 104 and the second vertical groove 202. Hydraulic buffer rods 506 are respectively fixedly arranged at the four corners of the upper end surface of the base 101, and the upper end surface of the hydraulic buffer rod 506 contacts the lower end surface of the second shell 501. A level 504 is fixedly arranged in the middle of the lower end surface of the second shell 501. Balancing units 503 are arranged on both sides of the level 504 in the second shell 501. The rotating seat 505 is located outside the balancing unit 503 and the upper end surface of the base 101 is connected to the lower end surface of the second shell 501 through the rotating seat 505. The balance state of the material storage device 200 and the balancing device 500 is monitored by the spirit level 504, which facilitates the balancing unit 503 to balance the material storage device 200 and the balancing device 500, and the balancing device 500 plays a role in lowering the center of gravity of the entire device, so that the forklift can maintain better balance performance and higher stability during transportation, thereby improving the safety of the device. The hydraulic buffer rod 506 plays a buffering role, delaying the rotation degree of the fixed base device 100 and the second shell 501, and reserving time for the balancing unit 503 to be balanced. The hydraulic buffer rod 506 also plays a limiting role. When the balancing unit 503 cannot be balanced, the hydraulic buffer rod 506 serves the purpose of support.

[0045] See also Fig.10 , Fig.11 and Fig.12 The balancing unit 503 includes a gear pump 5031, a first balancing chamber 5034, and a second balancing chamber 5037. The gear pump 5031 is connected to the first balancing chamber 5034 through a first connecting pipe 5032, and a first solenoid valve 5033 is provided on the first connecting pipe 5032. The gear pump 5031 is connected to the second balancing chamber 5037 through a second connecting pipe 5035, and a second solenoid valve 5036 is provided on the second connecting pipe 5035. The first balancing chamber 5034 and the second balancing chamber 5037 are provided with ventilation holes 5033. 38 and the vent hole 5038 passes through the side wall of the second shell 501 to communicate with the outside world, the first balancing chamber 5034 and the second balancing chamber 5037 are filled with water, and the gear pump 5031 is used as a power source (the gear pump 5031 rotates forward and reversely to control the pumping direction), and cooperates with the level meter 504 to monitor the balance state of the storage device 200 and the balance device 500, and then adjusts the weight of the water in the first balancing chamber 5034 and the second balancing chamber 5037, so that the storage device 200 and the balance device 500 are in a horizontal state, further improving the stability of the device.

[0046] When the material in the storage space 203 is filled, the level meter 504 monitors the balance state of the storage device 200 and the balancing device 500, starts the gear pump 5031, opens the first solenoid valve 5033 and the second solenoid valve 5036, and makes the first balancing bin 5034 and the second balancing bin 5037 communicate with each other, so that the storage device 200 and the balancing device 500 are in a dynamic balance state, and the hydraulic buffer rod 506 plays a buffering role. After the material in the storage space 203 is filled, the first solenoid valve 5033 and the second solenoid valve 5036 are closed to maintain the balance state of the storage device 200 and the balancing device 500. When the material in the storage space 203 is discharged outward, the conveying belt 303 drives the material to be discharged outward, and the counterweight block 312 performs preliminary balance on the storage device 200. Balance adjustment, the balancing unit 503 performs secondary balance adjustment on the storage device 200 and the balancing device 500. On the one hand, it can dynamically adjust the center of gravity of the entire device, and on the other hand, it can avoid the device from tipping over (the clamping device 102, the counterweight block 312, the balancing unit 503, the hydraulic buffer rod 506 and other mechanisms cooperate with the forklift to form a whole. The weight distribution of this device is uniform and the center of gravity is low, which is beneficial to improve the stability of the forklift and the device). When the device is moved a short distance, the universal wheel 105 is used manually to move the short distance to improve the convenience of the device. The device is provided with a control circuit board on the forklift, and the electrical equipment in the device is connected to the control circuit board through wires, and the forklift is used as the power supply to power the electrical equipment. This technology is a prior art and is not described here.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A forklift unloading device, comprising a fixed base device (100), characterized in that: A material storage device (200) is arranged above the fixed base device (100), and a material conveying device (300) is arranged inside the material storage device (200); The material storage device (200) comprises a first shell (201) and a guide portion (204); an arc-shaped limiting groove (206) cooperating with the material feeding device (300) is provided below the guide portion (204) on the front and rear sides of the inner wall of the first shell (201); The feeding device (300) comprises an electric roller (301) and a transmission cylinder (302), the two ends of the electric roller (301) being embedded in the bottom of the inner wall of the first shell (201), the two ends of the transmission cylinder (302) being mounted on the limiting sliders in the arc-shaped limiting groove (206), a conveying belt (303) being arranged outside the electric roller (301) and the transmission cylinder (302), a fixing block (307) being fixedly arranged on the front and rear sides above the first shell (201), a rotating shaft (308) being rotatably arranged between the two fixing blocks (307), a spiral pulley (309) being fixedly arranged on the two ends of the rotating shaft (308), and a servo motor (309) being fixedly arranged on one side of the rotating shaft (308) located above the first shell (201). A servo motor (311), wherein a locking mechanism is arranged inside the servo motor (311), and an output shaft of the servo motor (311) is connected to a rotating shaft (308) via a gear transmission mechanism (310); bearings (304) are fixedly mounted on both ends of the rotating shaft of the transmission cylinder (302), and a connecting ring (305) is fixedly sleeved on the outer ring of the bearing (304); a first groove (205) is provided above the guide portion (204) and on the front and rear sides of the upper end face of the first shell (201); a counterweight (312) is slidably arranged in the first groove (205); the connecting ring (305) and the counterweight (312) are connected via a cable (306), and the middle part of the cable (306) is spirally wound around the outer wall of the spiral pulley (309); The fixed base device (100) comprises a base (101), two sockets (103) corresponding to the forklift teeth are provided in the base (101), one end of the two sockets (103) is located on the side wall of the base (101) and a first vertical groove (104) corresponding to the forklift teeth is provided, a plurality of clamping devices (102) perpendicular to the sockets (103) are provided in the base (101), the clamping device (102) comprises a bidirectional synchronous hydraulic cylinder (1021), and clamping claws (1022) are fixedly provided at both ends of the bidirectional synchronous hydraulic cylinder (1021); The outer wall of the first shell (201) is provided with a second vertical groove (202) that matches the first vertical groove (104), and the first shell (201) is provided with a material storage space (203).

2. The unloading device for a forklift according to claim 1, characterized in that: The material storage device (200) is provided with a material discharging device (400), a through hole is provided on the side panel of the first shell (201) away from the servo motor (311), and the material discharging device (400) is arranged in the through hole. The material discharging device (400) comprises a gate (401) and a plurality of lifting electric push rods (402), the lower end surface of the gate (401) is an inclined surface, the lifting electric push rods (402) are embedded in the side panel of the first shell (201), and the output shaft end of the lifting electric push rod (402) is fixedly connected to the upper end surface of the gate (401).

3. The unloading device for a forklift according to claim 1 or 2, characterized in that: A balancing device (500) is arranged between the fixed base device (100) and the material storage device (200), and the balancing device (500) comprises a second shell (501) and two rotating seats (505); a side panel of the second shell (501) is provided with a third vertical groove (502) that cooperates with the first vertical groove (104) and the second vertical groove (202); a level (504) is fixedly arranged in the middle of the lower end surface of the second shell (501); balancing units (503) are arranged in the second shell (501) on both sides of the level (504); the rotating seat (505) is located outside the balancing unit (503) and connects the upper end surface of the base (101) with the lower end surface of the second shell (501) through the rotating seat (505).

4. The unloading device for a forklift according to claim 3, characterized in that: Hydraulic buffer rods (506) are fixedly arranged at the four corners of the upper end surface of the base (101), and the upper end surface of the hydraulic buffer rod (506) is in contact with the lower end surface of the second shell (501).

5. The unloading device for a forklift according to claim 4, characterized in that: The balancing unit (503) comprises a gear pump (5031), a first balancing chamber (5034) and a second balancing chamber (5037); the gear pump (5031) is connected to the first balancing chamber (5034) via a first connecting pipe (5032); a first solenoid valve (5033) is arranged on the first connecting pipe (5032); the gear pump (5031) is connected to the second balancing chamber (5037) via a second connecting pipe (5035); a second solenoid valve (5036) is arranged on the second connecting pipe (5035); ventilation holes (5038) are arranged on the first balancing chamber (5034) and the second balancing chamber (5037); and the ventilation holes (5038) pass through the side wall of the second shell (501) and are connected to the outside.

6. The unloading device for a forklift according to claim 3, characterized in that: Universal wheels (105) are respectively arranged at the four corners of the lower end surface of the base (101), and the universal wheels (105) are provided with a locking mechanism.

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