Construction site material conveying device

Abstract

The application discloses a kind of construction site material conveying devices, comprising: AGV trolley, for between outdoor yard and construction site Mobile;Tray lifting transfer mechanism, set in the AGV trolley.The present application, by the first lifting assembly realizes the lifting handling of tray between ground and interface height, second lifting assembly is after receiving tray by horizontal rotation Forklift arm is transferred to AGV trolley above, again cooperate with the lifting function of itself realizes the stacking of tray, in reverse then can be from goods stack top layer by layer take down tray unload;Roller conveyor is formed in continuous conveying line on forklift arm, second lifting assembly and AGV trolley, when AGV trolley is completed on a stack, can whole stack material along conveying line moves to AGV trolley rear, empty front stacking area to carry out next stack and stack, realizes the continuous stacking and unloading operation of multiple stacks material in AGV trolley limited space, greatly improves the material conveying capacity and operation efficiency of single vehicle.

Description

Technical Field

[0001] This invention relates to the field of conveying technology, and in particular to a material conveying device for construction sites. Background Technology

[0002] Construction sites require frequent transfers of various materials, such as bricks, blocks, and pipes, from outdoor storage areas to work areas on different floors. The large volume, high frequency, and variety of material transport make it a key factor affecting overall construction efficiency.

[0003] Currently, material transportation at construction sites mainly relies on manual handling or ordinary forklifts with pallets. Manual handling requires workers to repeatedly bend over and walk with heavy loads, resulting in limited capacity for each load. Prolonged, high-intensity work not only leads to extreme labor intensity and worker fatigue and occupational injuries, but also results in low efficiency, making it difficult to meet the continuous material supply requirements of large-scale construction projects.

[0004] While using ordinary forklifts can solve the problem of single-load handling, their automation level is low and they still rely heavily on manual operation. Every action of the forklift, such as picking up, lifting, driving, and unloading, requires the driver to operate it throughout the process. The operation is cumbersome and requires a high level of skill and attention from the driver. The entire transfer process involves a large number of manual assistance links, making it difficult to achieve automated material flow from the stockyard to the construction site. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings mentioned above by providing a material conveying device for construction sites that integrates forklift and conveying functions.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a material conveying device for construction sites, comprising: AGV trolleys are used to move between outdoor storage yards and construction sites; A pallet lifting and transfer mechanism is mounted on the AGV trolley, and the pallet lifting and transfer mechanism includes: The first lifting component is disposed at one end of the AGV vehicle; The second lifting component is embedded in the AGV and is arranged adjacent to the first lifting component; The forklift arm is detachably connected to either the first lifting assembly or the second lifting assembly. The forklift arm is initially connected to the first lifting assembly, which is used to drive the forklift arm to lift and lower, so as to pick up the pallet from the ground and lift it to the height where it intersects with the second lifting assembly. The forklift arm and the pallet on it can be transferred from the first lifting assembly to the second lifting assembly; The second lifting component is used to drive the forklift arm to rotate horizontally and lift vertically; The forklift arm, the second lifting assembly, and the AGV trolley are all equipped with roller conveyors to form a conveyor line for moving the pallet in the horizontal direction.

[0007] Furthermore, one end of the AGV trolley is provided with a mounting slot for the second lifting component to be embedded; The first lifting component includes two linear lifting modules embedded in the AGV trolley, the mounting slot is located between the two linear lifting modules, and the first lifting component also includes a top support beam connected to the two linear lifting modules, the linear lifting modules being used to drive the top support beam to move up and down; The forklift arm includes two forks connected by a connecting rod. One end of each fork is inserted into a mounting slot. Each fork has two guide posts that connect to the AGV trolley. The AGV trolley has a lifting section groove for the guide posts to move up and down. The top support beam consists of a pushing section and a hook section fixedly mounted on the pushing section. The pushing section is located at the bottom of the connecting rod and abuts against the connecting rod. The hook section is L-shaped, with its horizontal portion extending above the connecting rod, so that the forklift arm moves up and down synchronously when the top support beam moves up and down.

[0008] Furthermore, the second lifting component includes a scissor lift installed inside the AGV trolley. The top of the scissor lift is provided with a horizontal rotating platform, and the rotating end of the horizontal rotating platform is provided with a support platform. One side of the support platform is provided with a slot for inserting a fork rod. The AGV is also provided with a horizontal translation groove connected to the lifting section chute and a vertical exit groove connected to the horizontal translation groove. The contact surfaces of the push section and the connecting rod are both inclined surfaces, so that after the guide column moves to the top of the lifting section chute, the continued upward movement of the push section can push the guide column into the horizontal translation groove, so that the fork rod can be inserted into the slot. The support platform is equipped with a locking component for locking the fork, and a reset component that pushes the connecting rod to move the guide column from the side of the horizontal translation groove near the vertical exit groove to the side of the lifting section slide groove.

[0009] Furthermore, the locking component includes a first electric push rod and a locking pin disposed at the telescopic end of the first electric push rod, and a positioning groove for inserting the locking pin is provided inside the fork.

[0010] Furthermore, the reset component includes a second electric push rod and a reset push plate disposed at the telescopic end of the second electric push rod.

[0011] Furthermore, the AGV is equipped with a detachable protective railing on its top.

[0012] Furthermore, the top of the AGV trolley, away from the pallet lifting and transfer mechanism, is equipped with a gripping robotic arm for grabbing materials.

[0013] Furthermore, the AGV is equipped with a visual recognition unit for image acquisition.

[0014] The beneficial effects of this invention are reflected in: This invention utilizes a first lifting component to lift and transport pallets between the ground and the junction height. A second lifting component, after receiving the pallet, rotates horizontally to move the forklift arm above the AGV (Automated Guided Vehicle) trolley, and then, in conjunction with its own lifting function, stacks the pallets. Conversely, it can remove pallets layer by layer from the top of the stack for unloading. A roller conveyor forms a continuous conveyor line on the forklift arm, the second lifting component, and the AGV trolley. After one stack is completed on the AGV trolley, the entire stack can be moved along the conveyor line to the rear of the AGV trolley, freeing up the front stacking area for the next stack. This enables continuous stacking and unloading of multiple stacks of material within the limited space of the AGV trolley, significantly improving the material transport capacity and operational efficiency per trip. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial view of the pallet lifting and transfer mechanism of the present invention; Figure 3 for Figure 2 A magnified view of a portion of point A shown; Figure 4 This is a schematic diagram showing the connection between the forklift arm and the top support beam of the present invention; Figure 5 This is a structural view of the top support beam of the present invention; Figure 6 This is a structural view of the forklift arm of the present invention; Figure 7 This is a partial view of the second lifting component of the present invention.

[0016] In the picture: 1. AGV trolley; 2. Pallet lifting and transfer mechanism; 21. First lifting component; 211. Linear lifting module; 212. Top support beam; 22. Second lifting component; 221. Scissor lift; 222. Horizontal rotating platform; 223. Support platform; 23. Forklift arm; 231. Fork rod; 232. Linkage rod; 233. Guide column; 234. Positioning slot; 3. Roller conveyor; 4. Locking component; 5. Reset component; 6. Guardrail; 7. Grabbing robotic arm. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-7 This invention discloses a material conveying device for construction sites, comprising: AGV trolley 1, used for moving between outdoor storage yard and construction site; Pallet lifting and transfer mechanism 2 is mounted on AGV trolley 1, and includes: The first lifting component 21 is located at one end of the AGV trolley 1; The second lifting component 22 is embedded in the AGV trolley 1 and is arranged adjacent to the first lifting component 21. The forklift arm 23 is detachably connected to either the first lifting assembly 21 or the second lifting assembly 22; In its initial state, the forklift arm 23 is connected to the first lifting assembly 21, which is used to drive the forklift arm 23 to lift and lower, so as to pick up the pallet from the ground and lift it to the height where it intersects with the second lifting assembly 22. The forklift arm 23 and the pallet on it can be transferred from the first lifting assembly 21 to the second lifting assembly 22; The second lifting assembly 22 is used to drive the forklift arm 23 to rotate horizontally and lift. Roller conveyors 3 are installed on the forklift arm 23, the second lifting assembly 22, and the AGV trolley 1 to form a conveyor line to move the pallet in the horizontal direction.

[0019] This invention utilizes a first lifting component 21 to lift and transport pallets between the ground and the handover height. After receiving the pallet, the second lifting component 22 rotates horizontally to move the forklift arm 23 above the AGV trolley 1, and then uses its own lifting function to stack the pallets. Conversely, it can remove pallets layer by layer from the top of the stack for unloading. The roller conveyor 3 forms a continuous conveying line on the forklift arm 23, the second lifting component 22, and the AGV trolley 1. After a stack is completed on the AGV trolley 1, the entire stack of material can be moved along the conveying line to the rear of the AGV trolley 1, freeing up the front stacking area for the next stack. This enables continuous stacking and unloading of multiple stacks of material within the limited space of the AGV trolley, significantly improving the material conveying capacity and operational efficiency per trip.

[0020] In one embodiment, one end of the AGV trolley 1 is provided with a mounting slot for the second lifting component 22 to be embedded; The first lifting component 21 includes two linear lifting modules 211 embedded in the AGV trolley 1, with the mounting slot located between the two linear lifting modules 211. The first lifting component 21 also includes a top support beam 212 connected to the two linear lifting modules 211, and the linear lifting modules 211 are used to drive the top support beam 212 to move up and down. The forklift arm 23 includes two forks 231, and a connecting rod 232 connects the two forks 231. One end of each fork 231 is inserted into a mounting slot. Each fork 231 is provided with two guide posts 233 that are inserted into the AGV trolley 1. The AGV trolley 1 has a lifting section groove for the guide posts 233 to move up and down. The top support beam 212 consists of a pushing section and a hook section fixedly set on the pushing section. The pushing section is located at the bottom of the connecting rod 232 and abuts against the connecting rod 232. The hook section is L-shaped, and its horizontal part extends above the connecting rod 232 to drive the forklift arm 23 to move up and down synchronously when the top support beam 212 moves up and down.

[0021] With this design, when the linear lifting module 211 drives the top support beam 212 to lift, the pushing section pushes the connecting rod 232 upward, while the hook section forms a limit above the connecting rod 232, so that the forklift arm 23 can move up and down synchronously with the top support beam 212 to complete the forklift lifting and lowering and returning actions; the guide column 233 slides in the sliding groove of the lifting section to provide linear guidance for the lifting movement of the forklift arm 23, ensuring that the forklift arm 23 lifts and lowers smoothly without swaying under load; the second lifting component 22 is embedded in the mounting groove, with a compact and reasonable layout, effectively utilizing the internal space of the AGV trolley 1.

[0022] In one embodiment, the second lifting component 22 includes a scissor lift 221 disposed in the AGV trolley 1. The top of the scissor lift 221 is provided with a horizontal rotating platform 222. The rotating end of the horizontal rotating platform 222 is provided with a support platform 223. One side of the support platform 223 is provided with a slot for inserting the fork rod 231. The AGV trolley 1 is also provided with a horizontal translation groove connected to the lifting section slide groove, and a vertical exit groove connected to the horizontal translation groove. The contact surfaces of the push section and the connecting rod 232 are both inclined surfaces, so that after the guide column 233 moves to the top of the lifting section slide groove, the continued upward movement of the push section can push the guide column 233 to move into the horizontal translation groove, so that the fork rod 231 is inserted into the slot. The support platform 223 is equipped with a locking component 4 for locking the fork 231, and a reset component 5 for pushing the connecting rod 232 to move the guide column 233 from the side of the horizontal translation groove near the vertical exit groove to the side of the lifting section slide groove.

[0023] With this design, when the forklift arm 23 rises to the docking height with the support platform 223, the inclined surface of the pushing section cooperates with the connecting rod 232 to convert the vertical displacement of the pushing section into the horizontal displacement of the guide column 233 along the horizontal translation groove, pushing the end of the fork 231 to automatically insert into the slot of the support platform 223, completing the automated handover of the forklift arm 23 from the first lifting assembly 21 to the second lifting assembly 22; then the horizontal rotating platform 222 of the second lifting assembly 22 drives the forklift arm 23 to rotate above the AGV trolley 1, and the scissor lift 221 adjusts the height of the forklift arm 23 to complete the stacking or unloading; after the handover is completed, the locking component 4 locks the fork 231 to ensure that the pallet is stably fixed on the support platform 223 during rotation, lifting and stacking operations; after the operation is completed, the reset component 5 pushes the connecting rod 232 to reset the guide column 233 along the horizontal translation groove, returning it to the sliding groove area of ​​the lifting section, realizing the return of the forklift arm 23 to the ready state of the first lifting assembly 21, so as to carry out the next ground picking or unloading.

[0024] In one embodiment, the locking component 4 includes a first electric push rod and a locking pin disposed at the telescopic end of the first electric push rod, and a positioning groove 234 for the locking pin to be inserted is provided in the fork 231.

[0025] With this design, after the fork arm 231 is inserted into the slot, the first electric push rod drives the locking pin to extend and insert into the positioning groove 234 of the fork arm 231, forming an axial lock. This prevents the forklift arm 23 from accidentally slipping off when the support platform 223 rotates and lifts the pallet, ensuring the reliability of the connection during the pallet stacking operation.

[0026] In one embodiment, the reset component 5 includes a second electric push rod and a reset push plate disposed at the telescopic end of the second electric push rod.

[0027] With this design, when the palletizing or unloading operation is completed and the forklift arm 23 needs to be reset, the locking component 4 is unlocked, and the second electric push rod drives the reset push plate to push the connecting rod 232, which drives the guide column 233 to return from the horizontal translation groove through the vertical exit groove to the initial position of the lifting section slide groove, so that the forklift arm 23 re-establishes connection with the first lifting component 21, ready to enter the next round of ground picking or putting back cycle.

[0028] In one embodiment, the AGV trolley 1 is provided with a detachable protective railing 6 on its top.

[0029] With this design, the protective guardrails 6 form a barrier on both sides of the AGV trolley 1 to prevent the stacked materials from slipping during the transportation process due to bumps or sudden stops. The detachable structure makes it easy to install or remove the materials flexibly according to the height of the materials and the number of stacks, thus taking into account both safety protection and loading flexibility.

[0030] In one embodiment, a gripping robotic arm 7 for gripping materials is provided at the top of the end of the AGV trolley 1 away from the pallet lifting and transfer mechanism 2.

[0031] With this design, the AGV trolley 1 can not only transport stacked materials, but also pick up and put down pipe fittings through the gripping operation of the gripping robotic arm 7, thus improving the versatility of this conveying device.

[0032] In one embodiment, the AGV trolley 1 is equipped with a visual recognition unit for image acquisition.

[0033] With this design, the visual recognition unit provides the AGV 1 with environmental perception capabilities, which can identify road signs, pallet positions and stacking postures at the construction site, assisting the AGV 1 in automatically planning its driving path and accurately aligning and picking up pallets, thus achieving autonomous navigation and intelligent operation throughout the entire process.

[0034] It should be noted that the gripping robotic arm 7 and the vision recognition unit are common knowledge in this field, so their specific structural composition and working principle will not be elaborated on in this article.

[0035] The specific usage process of this invention is as follows: AGV 1 autonomously travels to the storage yard. The first lifting assembly 21 lowers the forklift arm 23 to pick up the pallet from the ground and then lifts it to the handover height. The inclined surface of the top support beam 212 pushes the guide column 233 to push the fork lever 231 into the slot of the support platform 223 and locks it by the locking component 4, completing the transfer of the forklift arm 23 from the first lifting assembly 21 to the second lifting assembly 22. The second lifting assembly 22 rotates the forklift arm 23 above the AGV 1 through the horizontal rotating platform 222. The scissor lift 221 adjusts the height to stack the pallet on the existing stack to complete the stacking. The roller conveyor 3 transports the stacked material from the front to the back to free up the front stacking area. After the forklift arm 23 resets, it picks up and stacks the next stack to achieve continuous loading of multiple stacks. After the AGV 1 arrives at the construction site, it unloads according to the reverse process. The second lifting assembly 22 lifts the pallet from the top of the stack and rotates it to the handover height. After handing it back to the first lifting assembly 21, it lowers it to the ground.

[0036] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0038] Additionally, "multiple" refers to two or more.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A material conveying device for a construction site, characterized in that, include: AGV trolley (1) is used to move between the outdoor storage yard and the construction site; A pallet lifting and transfer mechanism (2) is mounted on the AGV trolley (1), and the pallet lifting and transfer mechanism (2) includes: The first lifting component (21) is disposed at one end of the AGV trolley (1); The second lifting component (22) is embedded in the AGV trolley (1) and is arranged adjacent to the first lifting component (21); The forklift arm (23) is detachably connected to either the first lifting assembly (21) or the second lifting assembly (22); The forklift arm (23) is connected to the first lifting assembly (21) in the initial state. The first lifting assembly (21) is used to drive the forklift arm (23) to lift and lower, so as to pick up the pallet from the ground and lift it to the height where it intersects with the second lifting assembly (22). The forklift arm (23) and the pallet on it can be transferred from the first lifting assembly (21) to the second lifting assembly (22); The second lifting component (22) is used to drive the forklift arm (23) to rotate horizontally and lift vertically; Roller conveyors (3) are provided on the forklift arm (23), the second lifting assembly (22), and the AGV trolley (1) to form a conveyor line to move the pallet in the horizontal direction.

2. The construction site material conveying device according to claim 1, characterized in that: The AGV (1) has a mounting slot at one end for the second lifting component (22) to be embedded. The first lifting component (21) includes two linear lifting modules (211) embedded in the AGV trolley (1), and the mounting slot is located between the two linear lifting modules (211). The first lifting component (21) also includes a top support beam (212) connected to the two linear lifting modules (211). The linear lifting modules (211) are used to drive the top support beam (212) to move up and down. The forklift arm (23) includes two forks (231), and a connecting rod (232) connects the two forks (231). One end of each fork (231) is inserted into a mounting slot. Each of the two forks (231) is provided with two guide posts (233) that are inserted into the AGV trolley (1). The AGV trolley (1) has a lifting section groove for the guide posts (233) to move up and down. The top support beam (212) consists of a pushing section and a hook section fixedly set on the pushing section. The pushing section is located at the bottom of the connecting rod (232) and abuts against the connecting rod (232). The hook section is L-shaped, and its horizontal part extends above the connecting rod (232) to drive the forklift arm (23) to move up and down synchronously when the top support beam (212) moves up and down.

3. The construction site material conveying device according to claim 2, characterized in that: The second lifting component (22) includes a scissor lift (221) installed in the AGV trolley (1). The top of the scissor lift (221) is provided with a horizontal rotating platform (222). The rotating end of the horizontal rotating platform (222) is provided with a support platform (223). One side of the support platform (223) is provided with a slot for inserting a fork rod (231). The AGV trolley (1) is also provided with a horizontal translation groove connected to the lifting section slide groove and a vertical exit groove connected to the horizontal translation groove. The contact surfaces of the push section and the connecting rod (232) are both inclined surfaces, so that after the guide column (233) moves to the top of the lifting section slide groove, the continued upward movement of the push section can push the guide column (233) to move into the horizontal translation groove, so that the fork (231) is inserted into the slot. The support platform (223) is provided with a locking component (4) for locking the fork (231) and a reset component (5) for pushing the connecting rod (232) to move the guide column (233) from the side of the horizontal translation groove near the vertical exit groove to the side of the lifting section slide groove.

4. The construction site material conveying device according to claim 3, characterized in that: The locking component (4) includes a first electric push rod and a locking pin disposed at the telescopic end of the first electric push rod. The fork (231) has a positioning groove (234) for the locking pin to be inserted.

5. The construction site material conveying device according to claim 3, characterized in that: The reset component (5) includes a second electric push rod and a reset push plate disposed at the telescopic end of the second electric push rod.

6. The construction site material conveying device according to claim 1, characterized in that: The AGV (1) is equipped with a detachable guardrail (6) on its top.

7. The construction site material conveying device according to claim 1, characterized in that: The AGV (1) is equipped with a gripping robotic arm (7) for gripping materials at the top of the end away from the pallet lifting and transfer mechanism (2).

8. The construction site material conveying device according to claim 1, characterized in that: The AGV (1) is equipped with a visual recognition unit for image acquisition.

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