A high-level stacker

Abstract

The present invention discloses a high-level stacker, which comprises an integral frame composed of a lower cross beam, two columns and an upper cross beam. Electric control cabinets, maintenance ladders and lifting mechanisms are installed on both sides of the columns, and a traveling mechanism is connected to the bottom. A loading platform is arranged on the top surface of the lower cross beam, and a bidirectional telescopic fork mechanism is arranged on the loading platform. Two steel wire ropes of the lifting mechanism respectively bypass the lifting wheels on both sides of the loading platform and are positioned and connected to the upper cross beam. When the lifting mechanism is started, the steel wire ropes are tightened or loosened to drive the loading platform to move up and down to complete the stacking operation of articles; the traveling mechanism, the lifting mechanism and the fork mechanism are all electrically connected to the electric control cabinet. The layout of the present invention is compact, realizing fast and efficient high-level stacking operation, with high automation degree and high stacking efficiency; the design of the safety speed limiting mechanism can quickly and effectively prevent the goods from falling at a stall, minimizing the mechanical safety to the greatest extent, being safe and reliable, and having stable operation.

Description

Technical Field

[0001] The present invention relates to the technical field of stackers, and particularly to a high-level stacker. Background Art

[0002] Warehousing is the process of storing goods by using certain methods and tools, such as finished product warehousing in various manufacturing industries, raw material warehousing, and centralized turnover warehousing in the express and logistics industries.

[0003] At this time, due to the special tools, the utilization rate of the warehouse space is low. Currently, in most warehousing situations, industrial forklifts are used to place goods on the ground or on low-level shelves in layers. Some large enterprises use high-level forklifts and high-level shelves to improve the utilization rate of the warehouse space, but they face high equipment costs, software costs, and maintenance costs. Depending on the tools used, the methods and ways of use, the working environment, and the required human and material resources, the results of warehousing are different, and there are also significant differences in the warehousing efficiency.

[0004] Currently, warehousing is roughly divided into three types: the first is to use ordinary forklifts to place goods on the ground and low-level shelves; the second is to use high-level forklifts and high-level shelves to place goods on high-level shelves to improve the utilization rate of the warehouse space; the third is to use high-speed automatic stackers and supporting warehousing logistics management systems to achieve high-level automatic storage of goods and automation, unmanned operation, and intelligence of in-plant logistics. The first warehousing method has low equipment costs, high labor costs, low warehouse utilization rate, and slow logistics turnover speed. The second warehousing method has high equipment costs, high labor costs, high warehouse utilization rate, and fast logistics turnover speed. The third warehousing method has very high equipment costs, low labor costs, high warehouse utilization rate, and fast logistics turnover speed. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-level stacker to solve the problems of low equipment costs, high labor costs, low warehouse utilization rate, and slow logistics turnover speed in conventional warehousing methods.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a high-position stacker, comprising an overall frame, wherein the overall frame is connected by a lower crossbeam, two columns and an upper crossbeam, an electric control cabinet and a maintenance ladder are installed on the outer side of one of the columns, a lifting mechanism is installed on the outer side of the other column, a walking mechanism is connected to the outer sides of the bottoms of the two columns, a cargo platform is arranged on the top surface of the lower crossbeam, a bidirectional telescopic fork mechanism is arranged on the cargo platform, two steel wire ropes of the lifting mechanism are respectively passed around the hanging wheels on both sides of the cargo platform and then positioned and connected to the upper crossbeam, and when the lifting mechanism is started, the cargo platform is driven to move up and down by tightening or loosening the steel wire ropes to complete the stacking operation of the articles; the walking mechanism, the lifting mechanism and the fork mechanism are all electrically connected to the electric control cabinet.

[0008] Furthermore, the cargo platform includes a bottom frame, two side hanging plates are arranged on the left and right sides of the bottom frame, the two hanging wheels are symmetrically arranged and connected in the side hanging plates, two retaining frames are arranged on the front and rear sides of the bottom frame, four first guide wheels and four second guide wheels are arranged at the four corners of the side hanging plates, the first guide wheels and the second guide wheels cooperate with the columns; the two parallel arranged fork mechanisms are connected to the top surface of the bottom frame through a bolt assembly.

[0009] Furthermore, a plurality of photoelectric detection switches are arranged on the outer side surface of the vertical rod of the retaining frame, and reinforcing ribs are arranged at the corner connection between the vertical rod and the horizontal rod of the retaining frame.

[0010] Furthermore, the walking mechanism includes a walking wheel base, a walking motor and a walking wheel, the walking wheel is installed in the walking wheel base, the gearbox of the walking motor is connected to the walking wheel through a rotating main shaft and drives the walking wheel to rotate, the walking motor is installed on a motor connecting seat, the motor connecting seat is connected to the walking wheel base, and the walking wheel base is connected to the column; a buffer and a scraper are connected to the outside of the walking wheel base.

[0011] Furthermore, the lifting mechanism includes a lifting drive motor, a double-rope lifting drum, a first wire rope pulley, a second wire rope pulley and a wire rope fixing assembly, the lifting drive motor is connected to one of the columns through a lifting motor bracket, the first wire rope pulley and the second wire rope pulley are installed on the side of the upper crossbeam, and the positioning end of the wire rope of the double-rope lifting drum is fixed to the wire rope fixing assembly after passing through two first wire rope pulleys, a hanging wheel and a second wire rope pulley in sequence.

[0012] Furthermore, a drum protection cover is provided on the outer periphery of the double-rope lifting drum, and the drum protection cover is connected to the lifting motor bracket; the lifting motor bracket is connected to one of the columns by bolts.

[0013] Furthermore, two sets of wire rope fixing components are provided and are respectively connected to the front and rear sides of the upper cross beam. The wire rope fixing component on the front side is connected to the end of the wire rope on the rear side, and the wire rope fixing component on the rear side is connected to the end of the wire rope on the front side.

[0014] Furthermore, the wire rope fixing component includes a wire positioning member, an end pull rod, a tension sensor, and a wire rope fixing joint. The wire positioning member is connected to the side of the upper cross beam. One end of the end pull rod is positioned and connected within the wire positioning member, the other end of the end pull rod is connected to one end of the tension sensor, and the other end of the tension sensor is fixedly connected to the end of the wire rope through the wire rope fixing joint.

[0015] Furthermore, a safety speed limiting mechanism is further included. The safety speed limiting mechanism includes a machine-roomless speed governor, a counterweight, a safety wire rope, and a counterweight wheel. The machine-roomless speed governor is installed on the top of the column through a bracket. The counterweight wheel is installed at the bottom of the column. The safety wire rope bypasses the machine-roomless speed governor and the counterweight wheel to form a loop. The counterweight is connected directly below the machine-roomless speed governor and is located at the root of the column. A connecting rod and a safety clamp are provided on the cargo platform. The safety clamp is connected to one side of the cargo platform and moves synchronously with the cargo platform. The braking opening of the safety clamp is fitted on the surface of the brake guide rail. One end of the connecting rod is installed on the cargo platform. The connecting rod is connected to the braking switch of the safety clamp through a pull rod, and the other end of the connecting rod is connected to the safety wire rope.

[0016] Furthermore, the fork mechanism includes a base, a telescopic drive motor, an intermediate fork, and a main fork. Both ends of the base are connected to the bottom frame through bolts. The telescopic drive motor is installed at the bottom of the base through a motor bracket. The main fork is sleeved outside the intermediate fork. The intermediate fork is slidably installed on the base. A rack is connected in the groove of the intermediate fork. The output end of the telescopic drive motor is connected to a gear through a coupling. The gear meshes with the rack. A chain for transmission is provided between the main fork and the intermediate fork. Each end of the intermediate fork is provided with a chain sprocket. One end of the chain is fixed to the base, and the other end is fixed to the main fork after bypassing the chain sprocket. The connection directions of the two chains on one intermediate fork are opposite.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The high-level stacker of the present invention includes an overall frame. An electric control cabinet and a maintenance ladder are installed on one side of the overall frame, a lifting mechanism is installed on the other side, and a traveling mechanism is connected to the outside of the bottom. A loading platform is arranged on the top surface of the lower cross beam of the overall frame, and a bidirectional telescopic fork mechanism is arranged on the loading platform. The two steel wire ropes of the lifting mechanism respectively bypass the lifting wheels on both sides of the loading platform and are positioned and connected. When the lifting mechanism is started, the steel wire ropes are tightened or loosened to drive the loading platform to move up and down, and then the items are transferred to the shelves through the fork mechanism, thus completing the stacking operation of the items; wherein, the traveling mechanism, the lifting mechanism, and the fork mechanism are all electrically connected to the electric control cabinet to achieve automatic control.

[0019] The layout of the present invention is compact. Through the parameter setting of the control cabinet and the working mode switching function, the high-level stacking operation is completed quickly and efficiently; this process does not require continuous manual operation intervention, has a high degree of automation, and a high stacking efficiency; the design of the safety speed limit mechanism can quickly and effectively prevent the goods from stalling and falling, minimizing the mechanical safety to the greatest extent, being safe and reliable, and having stable operation.

[0020] The design of the fork mechanism of the present invention realizes the bidirectional telescopic function through a complex gear rack and chain sprocket system, thereby realizing the bidirectional access of goods. This process uses the telescopic drive motor as the power system, and realizes signal transmission and control through the control cabinet, achieving precise positioning and automatic operation, saving time and effort. Brief Description of the Drawings

[0021] The present invention will be further described below in conjunction with the drawings.

[0022] Figure 1 It is a three-dimensional schematic diagram of the high-level stacker of the present invention;

[0023] Figure 2 It is the front view of the high-level stacker of the present invention;

[0024] Figure 3 It is the side view of the high-level stacker of the present invention;

[0025] Figure 4 It is the top view of the high-level stacker of the present invention;

[0026] Figure 5 It is the schematic diagram of the traveling mechanism of the present invention;

[0027] Figure 6 It is the connection schematic diagram of the driving part of the lifting mechanism of the present invention;

[0028] Figure 7 It is the connection schematic diagram of the steel wire rope pulley part of the lifting mechanism of the present invention;

[0029] Figure 8 It is the enlarged connection diagram of the loading platform and the fork mechanism of the present invention;

[0030] Figure 9 Schematic diagram of the steel wire rope fixing component structure of the present invention;

[0031] Figure 10 Schematic diagram of the connection of the fork mechanism of the present invention;

[0032] Figure 11 Schematic diagram of the safety speed limit mechanism of the present invention;

[0033] Figure 12 Schematic diagram of the installation of the connecting rod and the safety clamp of the present invention;

[0034] Description of reference numerals: 1. Overall frame; 101. Lower cross beam; 102. Column; 103. Upper cross beam;

[0035] 2. Loading platform; 201. Side hanging plate; 202. Retaining frame; 203. First guide wheel; 204. Second guide wheel; 205. Hanging wheel; 206. Bottom frame; 207. Photoelectric detection switch; 208. Reinforcing rib;

[0036] 3. Electric control cabinet; 4. Maintenance ladder;

[0037] 5. Traveling mechanism; 501. Traveling wheel base; 502. Traveling motor; 503. Motor connection seat; 504. Rotating main shaft; 505. Buffer; 506. Scraper;

[0038] 6. Lifting mechanism; 601. Lifting drive motor; 602. Lifting motor bracket; 603. Double-rope lifting drum; 604. Steel wire rope; 605. First steel wire rope pulley; 606. Steel wire rope fixing component; 607. Drum protective cover; 608. Second steel wire rope pulley;

[0039] 606-1. Steel wire positioning part; 606-2. End pull rod; 606-3. Tension sensor; 606-4. Steel wire rope fixing joint;

[0040] 7. Fork mechanism; 701. Base; 702. Gear; 703. Rack; 704. Telescopic drive motor; 705. Motor bracket; 706. Coupling; 707. Chain; 708. Chain sprocket; 709. Middle fork; 710. Main fork;

[0041] 8. Safety speed limit mechanism; 801. Machine roomless speed limiter; 802. Counterweight; 803. Safety steel wire rope; 804. Counterweight wheel; 805. Connecting rod; 806. Safety clamp; 807. Pull rod;

[0042] 9. Traveling mechanism guide wheel; 10. Horizontal guide wheel. Detailed implementation manners

[0043] As Figures 1-12As shown in the figure, a high-level stacker includes an integral frame 1, which is composed of a lower cross beam 101, two columns 102 and an upper cross beam 103. An electric control cabinet 3 and a maintenance ladder 4 are installed on the outer side of one column 102, and a lifting mechanism 6 is installed on the outer side of the other column 102. A traveling mechanism 5 is connected to the outer sides of the bottoms of the two columns 102. A loading platform 2 is arranged on the top surface of the lower cross beam 101. A two-way telescopic fork mechanism 7 is arranged on the loading platform 2. Two steel wire ropes 604 of the lifting mechanism 6 respectively bypass the lifting wheels 205 on both sides of the loading platform 2 and are fixedly connected to the upper cross beam 103. When the lifting mechanism 6 is started, the steel wire ropes 604 are tightened or loosened to drive the loading platform 2 to move up and down to complete the stacking operation of items. The traveling mechanism 5, the lifting mechanism 6 and the fork mechanism 7 are all electrically connected to the electric control cabinet 3. In addition, horizontal guide wheels 10 are symmetrically arranged at the top of the column 102. When the high-level stacker moves as a whole, auxiliary positioning and guiding are carried out through the horizontal guide wheels 10 above, improving the stability during movement during work.

[0044] As Figure 8 shown in the figure, the loading platform 2 includes a bottom frame 206. Two side lifting plates 201 are arranged on the left and right sides of the bottom frame 206. The two lifting wheels 205 are symmetrically arranged and connected in the side lifting plates 201. Two blocking frames 202 are arranged on the front and rear sides of the bottom frame 206. Four first guide wheels 203 and four second guide wheels 204 are arranged at the four corners of the side lifting plates 201. The first guide wheels 203 and the second guide wheels 204 cooperate with the column 102. The two fork mechanisms 7 arranged in parallel are connected to the top surface of the bottom frame 206 through bolt assemblies.

[0045] Specifically, a plurality of photoelectric detection switches 207 are arranged on the outer side surface of the vertical rod of the blocking frame 202, and a reinforcing rib 208 is arranged at the corner connection of the vertical rod and the horizontal rod of the blocking frame 202. The photoelectric detection switch uses the occlusion or reflection of the light beam by the detected object to connect the circuit through the synchronous circuit, thereby detecting the presence or absence of the object. The arrangement of the plurality of photoelectric detection switches can detect in real time whether there is a cargo on the fork mechanism 7 and feed back the signal to the electric control cabinet.

[0046] As Figure 5As shown, the traveling mechanism 5 includes a traveling wheel base 501, a traveling motor 502 and traveling wheels. The traveling wheels are installed within the traveling wheel base 501. The gearbox of the traveling motor 502 is in transmission connection with the traveling wheels through a rotating main shaft 504 to drive the traveling wheels to rotate. The traveling motor 502 is installed on a motor connection seat 503, and the motor connection seat 503 is connected to the traveling wheel base 501. The traveling wheel base 501 is connected to the column 102. A buffer 505 and a scraping shovel 506 are connected to the outside of the traveling wheel base 501. The buffer is used for stopping and buffering when the stacker stops unstably at both ends of the track, and the scraping shovel is used to push away the obstacles accidentally dropped on the track to prevent the traveling wheels from derailing after rolling over the obstacles, ensuring the stability and safety of the movement of the traveling mechanism 5. In addition, traveling mechanism guide wheels 9 are arranged on both sides of the scraping shovel 506 to further improve the stability during the movement process.

[0047] As Figure 6 , 7 shown, the lifting mechanism 6 includes a lifting drive motor 601, a double-rope lifting drum 603, a first wire rope pulley 605, a second wire rope pulley 608 and a wire rope fixing component 606. The lifting drive motor 601 is connected to one of the columns 102 through a lifting motor bracket 602. The first wire rope pulley 605 and the second wire rope pulley 608 are installed on the side surface of the upper cross beam 103. The positioning end of the wire rope 604 of the double-rope lifting drum 603 sequentially bypasses two first wire rope pulleys 605, a lifting wheel 205 and a second wire rope pulley 608 and is then fixed to the wire rope fixing component 606. Specifically, a drum protective cover 607 is arranged on the outer periphery of the double-rope lifting drum 603, and the drum protective cover 607 is connected to the lifting motor bracket 602. The lifting motor bracket 602 is connected to one of the columns 102 through bolts. During operation, when the lifting drive motor 601 is started, the wire rope 604 is wound or unwound by the rotation of the double-rope lifting drum 603. Since the load platform 2 is hoisted on the wire rope 604 through a lifting ring 205, the load platform 2 is driven to lift and lower.

[0048] As Figure 9As shown, there are two sets of wire rope fixing components 606, which are respectively connected to the front and rear sides of the upper cross beam 103. The wire rope fixing component 606 on the front side is connected to the end of the wire rope 604 on the rear side, and the wire rope fixing component 606 on the rear side is connected to the end of the wire rope 604 on the front side. Specifically, the wire rope fixing component 606 includes a wire positioning member 601-1, an end pull rod 606-2, a tension sensor 606-3, and a wire rope fixing joint 606-4. The wire positioning member 601-1 is connected to the side of the upper cross beam 103. One end of the end pull rod 606-2 is positioned and connected inside the wire positioning member 601-1, the other end of the end pull rod 606-2 is connected to one end of the tension sensor 606-3, and the other end of the tension sensor 606-3 is fixedly connected to the end of the wire rope 604 through the wire rope fixing joint 606-4. The design of this wire rope fixing component can more accurately and effectively confirm whether the wire rope is overloaded or unevenly working, providing safety assurance.

[0049] As Figure 3 , 5 , 11, 12 shown, it further includes a safety speed limiting mechanism 8. The safety speed limiting mechanism 8 includes a machine-roomless speed limiter 801, a counterweight 802, a safety wire rope 803, and a counterweight wheel 804. The machine-roomless speed limiter 801 is installed on the top of the column 102 through a bracket, the counterweight wheel 804 is installed at the bottom of the column 102, the safety wire rope 803 bypasses the machine-roomless speed limiter 801 and the counterweight wheel 804 to form a loop, and the counterweight 802 is connected directly below the machine-roomless speed limiter 801 and is located at the root of the column 102; a connecting rod 805 and a safety clamp 806 are provided on the cargo platform 2. The safety clamp 806 is connected to one side of the cargo platform 2 and moves synchronously with the cargo platform. The braking port of the safety clamp 806 is fitted on the surface of the brake guide rail; one end of the connecting rod 805 is installed on the cargo platform, the connecting rod 805 is connected to the braking switch of the safety clamp 806 through a pull rod 807, the other end of the connecting rod 805 is connected to the safety wire rope 803 through a clamp plate, and the clamp plate is fixedly positioned and connected to the safety wire rope 803 through a bolt assembly.

[0050] The specific working process of the safety speed-limiting mechanism 8 is as follows. When the steel wire rope 604 on the loading platform is loosened, the loading platform 2 descends in free fall. At this time, the safety clamp 806 and the connecting rod 805 descend together with the loading platform, and drive the safety steel wire rope 803 to move. The safety steel wire rope 803 then drives the wire rope pulley on the machine-room-less speed limiter 801 to rotate. When the speed exceeds the set speed of the machine-room-less speed limiter, the machine-room-less speed limiter will lock the wire rope pulley and prevent the safety steel wire rope 803 from moving further. At this time, the safety steel wire rope 803 pulls one end of the connecting rod 805, and the other end of the connecting rod 805 still follows the movement of the loading platform 2. At this time, the connecting rod 805 touches the braking switch of the safety clamp 806 through the connecting rod 807 connected thereto, and the safety clamp 806 holds the safety guide rail to prevent the loading platform 2 from descending further.

[0051] As Figure 10 shown, the forklift mechanism 7 includes a base 701, a telescopic drive motor 704, an intermediate fork 709, and a main fork 710. Both ends of the base 701 are fixedly connected to the bottom frame 206 by bolts and do not move. The telescopic drive motor 704 is installed at the bottom of the base 701 through a motor bracket 705. The main fork 710 is sleeved outside the intermediate fork 709. The intermediate fork 709 is slidably installed on the base 701. A rack 703 is connected in the groove of the intermediate fork 709. The output end of the telescopic drive motor 704 is connected with a gear 702 through a coupling 706. The gear 702 meshes with the rack 703. A transmission chain 707 is arranged between the main fork 710 and the intermediate fork 709. Each end of the intermediate fork 709 is provided with a chain sprocket 708. One end of the chain 707 is fixed on the base 701, and the other end is fixed on the main fork 710 after passing around the chain sprocket 708. The connection directions of the two chains 707 on one intermediate fork are opposite.

[0052] During operation, the base 701 is fixed. The telescopic drive motor 704 is started and drives the intermediate fork 709 to move horizontally through the meshing of the gear 702 and the rack 703 and extends to the outside of the loading platform. When the intermediate fork 709 and the base 701 are displaced relative to each other, the chain sprocket 708 also generates displacement relative to the base 701. When the intermediate fork 709 and the base 701 are displaced, one end of the chain 707 fixed on the base 701 remains stationary, and the chain sprocket 708 on the intermediate fork 709 pushes against the chain 707 to move. At this time, the other end of the chain 707 drags the main fork 710 to move. Due to the opposite arrangement of the two chains, when the intermediate fork extends, one chain drives the main fork to extend for operation, and when the intermediate fork retracts, the other chain works to drive the main fork back to its original position.

[0053] In addition, it also includes an optoelectronic detection system, which is installed on the whole machine and includes standard components such as common optoelectronic induction detection, mechanical limit switches, photoelectric diffuse reflection switches, bar code strip readers, etc. Specifically, the optoelectronic induction detection, mechanical limit switches, photoelectric diffuse reflection switches, and bar code strip readers are all electrically connected to the control cabinet to realize signal detection and data transmission, and combined with the existing PLC programming technology, so as to realize the overall automatic control.

[0054] The working process of the present invention is as follows:

[0055] First, the loading platform 2 is located on the bottom lower cross beam 101 of the overall frame 1, and the items to be sorted are placed on the loading platform 2; then, the lifting drive motor 601 starts to drive the double-rope lifting reel 603 to rotate to wind and reel the steel wire rope 604, and drives the loading platform and the items to move up through the lifting pulley 205. When reaching the specified height, the lifting drive motor 601 stops working; then the middle fork 709 and the main fork 710 of the fork mechanism 7 extend to work to convey the items to the shelf. After being placed in place, the middle fork 709 and the main fork 710 return to their original positions; finally, the lifting drive motor 601 drives the double-rope lifting reel 603 to rotate in the reverse direction to loosen the steel wire rope 604, so as to lower the empty loading platform 2 to the initial position. Thus, a complete item stacking operation is completed.

[0056] The embodiments described above are only used to describe the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-level stacker, comprising an overall frame, which is connected and composed of a lower cross beam, two columns and an upper cross beam. Characterized in that: An electric control cabinet and a maintenance ladder are installed on the outer side of one of the columns, a lifting mechanism is installed on the outer side of the other column, a traveling mechanism is connected to the outer sides of the bottoms of the two columns, a loading platform is arranged on the top surface of the lower cross beam, a bidirectional telescopic fork mechanism is arranged on the loading platform, two steel wires of the lifting mechanism respectively bypass the lifting wheels on both sides of the loading platform and are then positioned and connected to the upper cross beam, and when the lifting mechanism is started, the loading platform is driven to move up and down by tightening or loosening the steel wires to complete the stacking operation of articles; the traveling mechanism, the lifting mechanism and the fork mechanism are all electrically connected to the electric control cabinet; The loading platform comprises a bottom frame, two side lifting plates are arranged on the left and right sides of the bottom frame, the two lifting wheels are symmetrically arranged and connected in the side lifting plates, two blocking frames are arranged on the front and rear sides of the bottom frame, four first guiding wheels and four second guiding wheels are arranged at the four corners of the side lifting plates, and the first guiding wheels and the second guiding wheels are matched with the columns; two parallel fork mechanisms are connected to the top surface of the bottom frame through bolt assemblies; The lifting mechanism comprises a lifting drive motor, a double-rope lifting drum, a first steel wire pulley, a second steel wire pulley and a steel wire fixing assembly, the lifting drive motor is connected to one of the columns through a lifting motor bracket, the first steel wire pulley and the second steel wire pulley are installed on the side surface of the upper cross beam, and the positioning end of the steel wire of the double-rope lifting drum sequentially bypasses two first steel wire pulleys, a lifting wheel and a second steel wire pulley and is then fixed on the steel wire fixing assembly; Two groups of the steel wire fixing assemblies are arranged and are respectively connected to the front and rear side surfaces of the upper cross beam, the front steel wire fixing assembly is connected to the end of the rear steel wire, and the rear steel wire fixing assembly is connected to the end of the front steel wire; The steel wire fixing assembly comprises a steel wire positioning piece, an end pull rod, a tension sensor and a steel wire fixing joint, the steel wire positioning piece is connected to the side surface of the upper cross beam, one end of the end pull rod is positioned and connected in the steel wire positioning piece, the other end of the end pull rod is connected to one end of the tension sensor, and the other end of the tension sensor is fixedly connected to the end of the steel wire through the steel wire fixing joint; The fork mechanism includes a base, a telescopic drive motor, a middle fork and a main fork, both ends of the base are connected to the bottom frame by bolts, and the telescopic drive motor is installed at the bottom of the base through a motor bracket; the main fork is sleeved on the outside of the middle fork, and the middle fork is slidably installed on the base, a rack is connected in the groove of the middle fork, and the output end of the telescopic drive motor is connected to a gear through a coupling, and the gear is meshed with the rack, a transmission chain is arranged between the main fork and the middle fork, and a chain groove wheel is respectively provided at both ends of the middle fork, one end of the chain is fixed to the base, and the other end is fixed to the main fork after passing through the chain groove wheel, and the connection directions of the two chains on one middle fork are opposite.

2. The high-level stacker according to claim 1, Features: A plurality of photoelectric detection switches are arranged on the outer side surface of the vertical rod of the retaining frame, and reinforcing ribs are arranged at the corner connection of the vertical rod and the horizontal rod of the retaining frame.

3. The high-level stacker according to claim 1, Features: The walking mechanism includes a walking wheel base, a walking motor and a walking wheel, the walking wheel is installed in the walking wheel base, the gearbox of the walking motor is connected to the walking wheel through a rotating main shaft and drives the walking wheel to rotate, the walking motor is installed on a motor connecting seat, the motor connecting seat is connected to the walking wheel base, and the walking wheel base is connected to the column; a buffer and a scraper are connected to the outer side of the walking wheel base.

4. The high-level stacker according to claim 1, Features: A drum protection cover is arranged on the outer periphery of the double-rope lifting drum, and the drum protection cover is connected to the lifting motor bracket; the lifting motor bracket is connected to one of the columns through bolts.

5. The high-level stacker according to claim 1, Features: It also includes a safety speed limiting mechanism, which includes a machine room-less speed limiter, a counterweight, a safety wire rope and a counterweight wheel. The machine room-less speed limiter is installed on the top of the column through a bracket, and the counterweight wheel is installed at the bottom of the column. The safety wire rope passes around the machine room-less speed limiter and the counterweight wheel to form a ring. The counterweight is connected directly below the machine room-less speed limiter and is located at the root of the column; a connecting rod and a safety clamp are provided on the cargo platform, the safety clamp is connected to one side of the cargo platform and moves synchronously with the cargo platform, and the brake port of the safety clamp is matched with the surface of the brake guide rail; one end of the connecting rod is installed on the cargo platform, and the connecting rod is connected to the brake switch of the safety clamp through a pull rod, and the other end of the connecting rod is connected to the safety wire rope.

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