Goods loading and unloading automatic guided vehicle for road goods transportation

Abstract

The invention discloses a cargo loading and unloading automatic guide vehicle for road cargo transportation, and belongs to the field of unloading equipment.The cargo loading and unloading automatic guide vehicle comprises a vehicle body, a supporting column is fixedly connected to the upper portion of the vehicle body, a lifting seat is slidably connected to the outer surface of the supporting column, a hydraulic push rod is fixedly connected to the upper portion of the lifting seat, and a push plate is fixedly connected to the left end of the hydraulic push rod; a blocking and protecting assembly is arranged on the left side of the push plate and comprises a push block, the push block is fixedly connected with the front face of the push plate, and an ejection piece is arranged below the push block and rotationally connected with the front face of the lifting base. The blocking and protecting assembly is arranged to protect loaded goods, the goods are pushed into a warehouse through the push plate, the blocking and protecting assembly can be flatly placed when the push plate is pushed so that the goods can pass through, the blocking and protecting assembly cannot be lifted up immediately when the push plate is pulled back, and the blocking and protecting assembly can be lifted up for blocking and protecting only when the push plate is pulled back and reset; the unloading device has the effect of conveniently, safely and quickly unloading.

Description

Technical Field

[0001] The present application relates to the field of truck unloading equipment, and more particularly, to an automatic guided vehicle for cargo loading and unloading used in road freight transportation. Background Art

[0002] In recent years, with the rapid development of the e-commerce and logistics industries, when loading and unloading goods on the station shelves or vehicles, it is often necessary to move large or heavy items onto the shelves or vehicles. Currently, most of them are manually loaded and unloaded, which is very unfriendly to thin or female workers. They can only borrow auxiliary tools such as forklifts or ask for help. Using forklifts for loading and unloading is costly and not always available on call. For some small loading and unloading points, using forklifts is not convenient. Moreover, manually moving up and down the shelves or walking back and forth inside the cargo box to stack or pick up goods is not only time-consuming and laborious, with low efficiency, but may even cause damage to goods or injury to personnel, resulting in unnecessary losses.

[0003] The patent document with the publication number CN113942854B discloses a safety device for unloading toxic, flammable, and explosive substances. The invention provides a safety device for unloading toxic, flammable, and explosive substances, mainly relating to the field of unloading equipment. A safety device for unloading toxic, flammable, and explosive substances includes a bottom plate, on the top surface of which a rotating shaft is rotatably mounted by bearings, and a circular mounting plate is installed at the top of the rotating shaft. In the above application document, power is provided by a second motor, and with the cooperation of a first sprocket, a second sprocket, and a chain, the placing plate can be driven to move up and down, thereby driving the article to be safely unloaded from the transport vehicle. However, after driving the article to lift and lower, it is still necessary to manually push the article off the placing plate, and the conveyor track can only drive the article to move a short distance horizontally, which is not convenient for unloading the goods. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an automatic guided vehicle for cargo loading and unloading used in road freight transportation, which solves the problems raised in the above background art.

[0005] To achieve the above object, the present application provides an automatic guided vehicle for loading and unloading goods used in road freight transportation, including a vehicle body. A support column is fixedly connected above the vehicle body. A lifting seat is slidably connected to the outer surface of the support column. A hydraulic push rod is fixedly connected above the lifting seat. A push plate is fixedly connected to the left end of the hydraulic push rod. A shielding assembly is arranged on the left side of the push plate. The shielding assembly includes a pushing block fixedly connected to the front surface of the push plate. A top piece is arranged below the pushing block and is rotatably connected to the front surface of the lifting seat. A first rack is slidably connected above the lifting seat. A limiting seat is fixedly connected to the right end of the first rack. A limiting rod movably penetrates through the right side of the limiting seat, and the limiting rod is fixedly connected to the right side of the lifting seat. A spring is elastically connected between the limiting seat and the right side of the lifting seat. A pulling column is fixedly connected above the first rack. A sliding groove is formed in the front surface of the pulling column, and a sliding column is slidably connected to the inner surface of the sliding groove. A pulling strip is fixedly connected to the front surface of the sliding column. A movable baffle is rotatably connected behind the pulling strip, and the movable baffle is hinged to the left side of the lifting seat.

[0006] Preferably, a motor is fixedly installed behind the support column. The output end of the motor is fixedly connected to a winding rod through a coupling. The winding rod penetrates through and is rotatably connected to the front surface of the support column. A rope is connected between the winding rod and the lifting seat.

[0007] Preferably, a counterweight assembly is arranged above the lifting seat. The counterweight assembly includes a support frame fixedly connected below the lifting seat. A transmission wheel is rotatably connected to the front surface of the support frame. The number of the transmission wheels is two. A first steel cable is arranged on the two transmission wheels. Both ends of the first steel cable are fixedly connected with counterweight blocks. A hook is fixedly connected to the front surface of the counterweight block.

[0008] Preferably, the number of the counterweight blocks is two, which are symmetrically arranged front and back. A sliding block is fixedly connected between the two counterweight blocks. A sliding track is slidably connected below the sliding block. The left and right ends of the sliding track are fixedly connected with support blocks, and the support blocks are fixedly connected above the lifting seat.

[0009] Preferably, a second steel cable is connected between the first steel cable and the pushing block by a rope. A guide wheel is arranged above the second steel cable. A support piece is rotatably connected behind the guide wheel, and the support piece is fixedly connected to the right side of the lifting seat.

[0010] Preferably, a rolling assembly is arranged above the lifting seat. The rolling assembly includes a receiving groove formed above the lifting seat, and a conveying roller is arranged on the inner surface of the receiving groove. The conveying roller penetrates through and is fixedly connected with a rotating shaft. The rotating shaft penetrates through and is rotatably connected to the front and back surfaces of the inner surface of the receiving groove. A gear is fixedly connected to the front end of the rotating shaft.

[0011] Preferably, the rolling assembly further includes a support base, which is fixedly connected to the front of the lifting base. A sliding sleeve is slidably connected to the outer surface of the support base. A second rack is fixedly connected to the lower part of the sliding sleeve, and the second rack meshes with the upper part of the gear. A connecting rod is fixedly connected between the sliding sleeve and the pushing block.

[0012] Preferably, the counterweight block, the sliding block and the sliding track are inclined.

[0013] The advantages of this application are as follows: (1) In this application, a shielding assembly is provided to protect the loaded goods. The goods are pushed into the warehouse by a push plate. When the push plate is pushing, it can flatten the shielding assembly for the goods to pass through. When the push plate is pulled back, the shielding assembly will not immediately lift, but will lift for shielding until the push plate is pulled back to its original position, which has the function of facilitating safe and rapid unloading.

[0014] (2) When the push plate pushes the goods in this application, it will also drive the counterweight assembly to slide in the opposite direction of the movement of the goods, which is used to balance the center-of-gravity imbalance caused by the position movement of the goods and has the function of preventing tipping.

[0015] (3) In this application, the movement of the push plate will also drive the rolling assembly to rotate, and the rolling assembly will rotate in the direction of the movement of the push plate, which has the function of facilitating the loading and unloading of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, objectives and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings: Figure 1 is the schematic diagram of the overall structure of the present invention; Figure 2 is the right view of the overall structure of the present invention; Figure 3 is the left view of the overall structure of the present invention; Figure 4 is the rear view of the overall structure of the present invention; Figure 5 is the schematic diagram of the overall structure of the present invention in the lifting state; Figure 6 is the schematic diagram of the overall structure of the present invention in the unloading state; Figure 7 is the Figure 1 schematic enlarged view of the structure at A in the present invention; Figure 8 is the Figure 1 schematic enlarged view of the structure at B in the present invention.

[0017] In the above figures, 1. Vehicle body; 2. Support column; 3. Lifting seat; 4. Hydraulic push rod; 5. Push plate; 6. Guarding component; 601. Pushing block; 602. Top piece; 603. First rack; 604. Limit seat; 605. Limit rod; 606. Spring; 607. Pulling column; 608. Sliding column; 609. Pulling bar; 610. Movable baffle; 7. Motor; 8. Winding rod; 9. Counterweight component; 901. Support frame; 902. Driving wheel; 903. First steel cable; 904. Counterweight block; 905. Hook; 10. Sliding block; 11. Sliding track; 12. Support block; 13. Second steel cable; 14. Guide wheel; 15. Support piece; 16. Rolling component; 161. Conveyor roller; 162. Rotating shaft; 163. Gear; 164. Support seat; 165. Sliding sleeve; 166. Second rack; 167. Connecting rod. Detailed implementation manners

[0018] In order to enable those skilled in the art of the present technology to better understand the solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0019] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0020] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0021] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0022] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the accompanying drawings and combine with embodiments to detail this application.

[0024] Embodiment 1

[0025] See Figures 1 - 8, this embodiment provides an automatic guided vehicle for loading and unloading goods used in road freight transportation, including a vehicle body 1. The vehicle body 1 is used for moving, which is prior art. Above the vehicle body 1, there are two support columns 2 fixedly connected. The cross-sectional shape of the support column 2 is H-shaped. A lifting seat 3 is slidably connected to the outer surface of the support column 2. The shape of the lifting seat 3 is Z-shaped. Above the lifting seat 3, there is a hydraulic push rod 4 fixedly connected. The output end of the hydraulic push rod 4 faces left. The left end of the hydraulic push rod 4 is fixedly connected with a push plate 5. The hydraulic push rod 4 can push the push plate 5 to move left and right. On the left side of the push plate 5, there is a shielding component 6. The shielding component 6 includes a pushing block 601. The shape of the pushing block 601 is T-shaped. There is a rubber pad at the left end of the pushing block 601. The pushing block 601 is fixedly connected to the front surface of the push plate 5. Below the pushing block 601, there is a top piece 602. In the normal state, the pushing block 601 presses on the upper right end of the top piece 602. At this time, the left end of the top piece 602 is lifted and does not contact the first rack 603. The top piece 602 is rotatably connected to the front surface of the lifting seat 3. There is a groove on the front surface of the lifting seat 3 for accommodating the top piece 602. The rotation connection point of the top piece 602 is set at a position to the right of its center. Above the lifting seat 3, there is a first rack 603 slidably connected. Above the lifting seat 3, there is a slide rail for the first rack 603 to slide. The cross-sectional shape of the slide rail is trapezoidal. Below the first rack 603, there is a dovetail groove for sliding on the slide rail. The teeth on the first rack 603 are right-angled triangles. The top piece 602 can hold the teeth on the first rack 603 to prevent it from sliding to the right. The right end of the first rack 603 is fixedly connected with a limit seat 604. The shape of the limit seat 604 is Z-shaped. A limit rod 605 passes through the right side of the limit seat 604 movably. The limit seat 604 can slide left and right on the outer surface of the limit rod 605. The limit rod 605 is fixedly connected to the right side of the lifting seat 3. There is a spring 606 elastically connected between the limit seat 604 and the right side of the lifting seat 3. The spring 606 is sleeved on the outer surface of the limit rod 605. Above the first rack 603, there is a pulling column 607 fixedly connected. The shape of the pulling column 607 is a square rod. There is a sliding groove on the front surface of the pulling column 607 and a sliding column 608 is slidably connected to the inner surface of the sliding groove. The sliding groove is a through setting. The front surface of the sliding column 608 is fixedly connected with a pulling bar 609. The rear of the pulling bar 609 is rotatably connected with a movable baffle 610. The movable baffle 610 is hinged to the left side of the lifting seat 3. Behind the support column 2, there is a motor 7 fixedly installed. The motor 7 is specifically a kind of brake motor 7. The output end of the motor 7 faces forward. The housing at the output end of the motor 7 is connected to the rear of the support column 2. The output end of the motor 7 is fixedly connected with a winding rod 8 through a coupling. The winding rod 8 passes through and is rotatably connected to the front of the support column 2. There is a winding drum on the winding rod 8. The winding rod 8 is connected with the lifting seat 3 by a rope. The winding rod 8 is connected with the lifting seat 3 by a steel wire rope. By driving the winding rod 8 to rotate by the motor 7, the steel wire rope is wound and unwound to lift and lower the lifting seat 3.

[0026] When the above-mentioned equipment is used, the goods are first placed on the lifting seat 3, and then the goods are transported to the carriage by moving the car body 1. At this time, the motor 7 is started to drive the winding rod 8 to rotate, and the winding rod 8 is rotated to wind the wire rope, and the wire rope will pull the lifting seat 3 up on the support column 2, so as to lift the goods to the position of the carriage. At this time, the hydraulic push rod 4 is started, and the hydraulic push rod 4 will push the push plate 5 to the left, and the push plate 5 will push the goods on the lifting seat 3 to move into the carriage. At this time, as the push plate 5 is pushed to the left, the push block 601 will also be driven to move to the left. When the push block 601 moves to the left, it will move away from the upper position of the right end of the top plate 602. At this time, the left end of the top plate 602 will sag under the action of gravity and build a platform. On the first rack 603, pushing the pushing block 601 to move to the left will also push the pulling column 607 to the left, thereby driving the first rack 603 to slide to the left. When the first rack 603 slides to the left, the top plate 602 will slide on the upper surface of the first rack 603. At the same time, the first rack 603 will drive the limiting seat 604 to slide to the left on the outer surface of the limiting rod 605, thereby compressing the spring 606. When the pulling column 607 moves to the left, it will drive the sliding column 608 to move the pulling bar 609 to the left. At this time, the vertical movable baffle 610 will gradually be lowered until the movable baffle 610 is placed on the bottom of the inner surface of the compartment to facilitate the goods to enter the compartment through the movable baffle 610. At this time, as the pushing block 601 continues to move to the left, the pulling When the column 607 also moves to the left, the right end of the pulling bar 609 will gradually rise, so that the sliding column 608 will slide upward in the sliding groove on the pulling column 607 until the push plate 5 is pushed to the far left. At this time, the goods are pushed down from the lifting seat 3 and then slide into the car through the movable baffle 610 to complete the loading of the car. At this time, the hydraulic push rod 4 is started to pull the push plate 5 to the right, and the push block 601 will leave the pulling column 607. At this time, the pulling column 607 loses its support, and the compressed spring 606 will release the elastic force to push the limit seat 604 to the right, so that the first rack 603 drives the pulling column 607 to slide to the right. At this time, the teeth on the first rack 603 will be resisted by the top plate 602 and cannot slide to the right. 5 continues to move to the right to leave space on the lifting seat 3 for loading and unloading new goods. When the push plate 5 moves to the right to the starting point, the push block 601 on the push plate 5 will again press against the upper right end of the top plate 602, and the left end of the top plate 602 will be lifted and moved away from the teeth on the first rack 603. The teeth on the first rack 603 lose their resistance, and the spring 606 will release its elastic force to drive the limit seat 604 to slide the first rack 603 to the right. The first rack 603 will drive the pulling column 607 to move to the right, and then drive the sliding column 608 to make the pulling bar 609 pull the movable baffle 610 to the right to make it vertical again, so that the movable baffle 610 can protect the newly loaded and unloaded goods and then be placed on the carriage again as a conveying ramp.

[0027] Example 2

[0028] See Figures 5 - 8 Figures 5 - 8 , a counterweight assembly 9 is provided above the lifting seat 3. The counterweight assembly 9 includes a support frame 901. The shape of the support frame 901 is U-shaped. The support frame 901 is fixedly connected to the lower part of the lifting seat 3. A driving wheel 902 is rotatably connected to the front of the support frame 901. The number of driving wheels 902 is two. A first steel cable 903 is arranged on the two driving wheels 902. Both ends of the first steel cable 903 are fixedly connected with counterweight blocks 904. The first steel cable 903 is wound around the two driving wheels 902 and then its two ends are respectively connected to the left and right sides of the counterweight block 904. At this time, the first steel cable 903 is in a tensioned state. A hook 905 is fixedly connected to the front of the counterweight block 904. The hook 905 is used for hanging additional counterweight weights. The number of counterweight blocks 904 is two, which are symmetrically arranged front and back. Grooves are arranged on the front and back sides of the lifting seat 3 for accommodating the counterweight blocks 904. Under normal conditions, the counterweight blocks 904 abut against the left inner surface of the groove. A sliding block 10 is fixedly connected between the two counterweight blocks 904. A sliding track 11 is slidably connected to the lower part of the sliding block 10. The number of sliding tracks 11 is two. A sliding groove for sliding on the sliding track 11 is arranged under the sliding block 10. Support blocks 12 are fixedly connected to the left and right ends of the sliding track 11. The support blocks 12 are fixedly connected to the upper part of the lifting seat 3. The counterweight blocks 904, the sliding block 10 and the sliding track 11 are inclined. Under normal conditions, the sliding block 10 will slide leftward on the sliding track 11 under the action of gravity. A second steel cable 13 is connected between the first steel cable 903 and the pushing block 601 by a rope. The second steel cable 13 is connected to the position near the right end below the first steel cable 903 through a steel cable connection joint. A guide wheel 14 is arranged above the second steel cable 13. The guide wheel 14 is used for supporting the second steel cable 13. A support piece 15 is rotatably connected to the rear of the guide wheel 14. The support piece 15 is fixedly connected to the right side of the lifting seat 3.

[0029] When the above equipment is specifically used, when the push plate 5 drives the pushing block 601 to move leftward, the pushing block 601 will also pull the second steel cable 13 leftward. The second steel cable 13 will pull a node on the first steel cable 903, causing it to drive rightward on the two driving wheels 902. At this time, the first steel cable 903 will drive the counterweight block 904 to move the sliding block 10 rightward on the sliding track 11. The sliding block 10 and the counterweight block 904 will move in the opposite direction to the goods pushed by the push plate 5, so as to balance the weight of the goods and prevent the vehicle body 1 from tipping leftward due to the overweight of the goods. When the push plate 5 finishes pushing the goods and moves rightward to reset, the pushing block 601 will also move rightward. At this time, the second steel cable 13 will loosen the tension on the first steel cable 903. The sliding block 10 will slide leftward on the sliding track 11 under the action of gravity, and then drive the counterweight block 904 to move leftward until the counterweight block 904 abuts against the left inner surface of the groove on the lifting seat 3, so as to facilitate resetting for balancing the loading and unloading of the next batch of goods.

[0030] Embodiment 3

[0031] Refer to Figures 4 - 8 , a rolling component 16 is arranged above the lifting seat 3. The rolling component 16 includes a receiving groove, the shape of the receiving groove is U-shaped, the receiving groove is opened above the lifting seat 3 and a conveying roller 161 is arranged on the inner surface of the receiving groove. The front of the conveying roller 161 penetrates and is fixedly connected with a rotating shaft 162. A bearing is arranged at the penetrating position between the rotating shaft 162 and the lifting seat 3. The rotating shaft 162 penetrates and is rotatably connected with the front and back surfaces of the inner surface of the receiving groove. A gear 163 is fixedly connected to the front end of the rotating shaft 162. The number of the receiving groove, the conveying roller 161, the rotating shaft 162 and the gear 163 is six. The rolling component 16 further includes a support seat 164, the shape of the support seat 164 is L-shaped, the support seat 164 is fixedly connected with the front surface of the lifting seat 3, a sliding sleeve 165 is slidably connected to the outer surface of the support seat 164, the shape of the sliding sleeve 165 is square-mouthed, a second rack 166 is fixedly connected below the sliding sleeve 165, the second rack 166 meshes with the upper part of the gear 163, and a connecting rod 167 is fixedly connected between the sliding sleeve 165 and the pushing block 601. The shape of the connecting rod 167 is L-shaped.

[0032] When the above equipment is specifically used, when it is necessary to unload goods from the carriage, first, the hydraulic push rod 4 is used to push the push plate 5 to flatten the movable baffle 610, and then the push plate 5 is retracted a little to reserve a position for the goods. At this time, the movement of the vehicle body 1 drives the movable baffle 610 to shovel the goods on the carriage, so as to shovel up the goods. A part of the goods will be placed on the conveying roller 161 on the lifting seat 3. At this time, the retraction of the push plate 5 drives the pushing block 601 to move to the right. The pushing block 601 drives the connecting rod 167 to make the sliding sleeve 165 slide to the right on the outer surface of the support seat 164. The rightward sliding of the sliding sleeve 165 drives the second rack 166 to move to the right. The rightward movement of the second rack 166 drives the gear 163 to rotate clockwise. The clockwise rotation of the gear 163 drives the rotating shaft 162 to make the conveying roller 161 rotate clockwise. At this time, with the clockwise rotation of the conveying roller 161, the goods are conveyed to the right side position above the lifting seat 3, so as to facilitate placing them in the middle position on the lifting seat 3, thus facilitating safe unloading.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An automatic guided vehicle for loading and unloading goods used in road freight transportation, comprising a vehicle body (1), characterized in that: A support column (2) is fixedly connected to the top of the vehicle body (1); a lifting seat (3) is slidably connected to the outer surface of the support column (2); a hydraulic push rod (4) is fixedly connected to the top of the lifting seat (3); a push plate (5) is fixedly connected to the left end of the hydraulic push rod (4); a guard assembly (6) is arranged on the left side of the push plate (5); the guard assembly (6) comprises a push block (601); the push block (601) is fixedly connected to the front of the push plate (5); a top plate (602) is arranged below the push block (601); the top plate (602) is rotatably connected to the front of the lifting seat (3); a first rack (603) is slidably connected to the top of the lifting seat (3); the right end of the first rack (603) is fixedly connected to the front of the lifting seat (3); A limit seat (604) is connected, the right side of the limit seat (604) movably passes through a limit rod (605), the limit rod (605) is fixedly connected to the right side of the lifting seat (3), a spring (606) is elastically connected between the limit seat (604) and the right side of the lifting seat (3), a pulling column (607) is fixedly connected above the first rack (603), a sliding groove is provided on the front side of the pulling column (607), and a sliding column (608) is slidably connected to the inner surface of the sliding groove, a pulling bar (609) is fixedly connected to the front side of the sliding column (608), and a movable baffle (610) is rotatably connected to the rear of the pulling bar (609), and the movable baffle (610) is hinged to the left side of the lifting seat (3).

2. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 1, characterized in that: A motor (7) is fixedly mounted at the rear of the support column (2); an output end of the motor (7) is fixedly connected to a reeling rod (8) via a coupling; the reeling rod (8) penetrates the front of the support column (2) and is rotatably connected; and a rope is connected between the reeling rod (8) and the lifting seat (3).

3. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 1, characterized in that: A counterweight assembly (9) is arranged above the lifting seat (3), and the counterweight assembly (9) comprises a support frame (901), the support frame (901) is fixedly connected to the bottom of the lifting seat (3), the front of the support frame (901) is rotatably connected to a transmission wheel (902), the number of the transmission wheels (902) is two, and first steel cables (903) are arranged on the two transmission wheels (902), both ends of the first steel cable (903) are fixedly connected to counterweight blocks (904), and the front of the counterweight block (904) is fixedly connected to a hook (905).

4. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 3, characterized in that: The number of the counterweight blocks (904) is two, which are symmetrically arranged front and back, and a sliding block (10) is fixedly connected between the two counterweight blocks (904). A sliding track (11) is slidably connected below the sliding block (10). Support blocks (12) are fixedly connected at the left and right ends of the sliding track (11), and the support block (12) is fixedly connected to the top of the lifting seat (3).

5. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 3, characterized in that: A second steel cable (13) is connected to the first steel cable (903) and the pushing block (601) by a rope, a guide wheel (14) is arranged above the second steel cable (13), a support plate (15) is rotatably connected to the rear of the guide wheel (14), and the support plate (15) is fixedly connected to the right side of the lifting seat (3).

6. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 1, characterized in that: A rolling assembly (16) is arranged above the lifting seat (3), and the rolling assembly (16) comprises a receiving groove, the receiving groove is opened above the lifting seat (3) and a conveying roller (161) is arranged on the inner surface of the receiving groove, a rotating shaft (162) passes through the front of the conveying roller (161) and is fixedly connected, the rotating shaft (162) passes through the front and rear surfaces of the inner surface of the receiving groove and is rotatably connected, and a gear (163) is fixedly connected to the front end of the rotating shaft (162).

7. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 6, characterized in that: The rolling assembly (16) further comprises a support seat (164), wherein the support seat (164) is fixedly connected to the front of the lifting seat (3), a sliding sleeve (165) is slidably connected to the outer surface of the support seat (164), a second rack (166) is fixedly connected below the sliding sleeve (165), the second rack (166) is meshed with the top of the gear (163), and a connecting rod (167) is fixedly connected between the sliding sleeve (165) and the pushing block (601).

8. The cargo loading and unloading automatic guided vehicle for road cargo transportation according to claim 4, characterized in that: The counterweight block (904), the sliding block (10) and the sliding track (11) are arranged in an inclined manner.

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