Material transportation trolley

Abstract

The utility model provides a material transportation trolley, belongs to the technical field of transportation devices, and aims to solve the problems that in the prior art, a carrying trolley in a workshop is large in friction resistance, and the height cannot be adjusted. Comprising a bottom frame, two stand columns are symmetrically arranged on one side of the bottom frame, a bearing frame is arranged above the bottom frame, the bearing frame is arranged in the length direction of the bottom frame, a plurality of rollers are rotationally connected to the top of the bearing frame, and the rollers are arranged in the length direction of the bearing frame; a lifting device is further arranged on the bottom frame and used for driving the bearing frame to ascend and descend. According to the roller structure, the material carrying resistance is remarkably reduced, the labor intensity of workers is relieved, and the operation efficiency is improved; the adjustable lifting function enables the trolley to adapt to various operation scenes, and the carrying strength of workers is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of transportation device technology, specifically relating to a material transport trolley. Background Technology

[0002] Traditional workshop material handling mainly relies on workers operating simple handcarts to transport goods over short distances. These handcarts typically consist of a flatbed, casters or directional wheels, and metal handles, and are designed to provide basic mobile carrying capacity for small-batch, short-distance material transfer within the workshop.

[0003] However, with the expansion of industrial production scale and the increasing diversification of goods, the existing handcart structural design has gradually revealed many insurmountable technical defects:

[0004] 1. Traditional handcarts typically have flat metal or wooden platforms. When goods are placed on them, the static and sliding friction between the contact surfaces significantly affects ease of operation. Especially when moving large mechanical parts, boxed raw materials, or irregularly shaped goods, workers need to apply considerable pushing force to move the goods on the platform, which not only increases labor intensity but also easily leads to scratches or displacement of the goods.

[0005] 2. The height of the existing handcart platform cannot be adjusted according to actual operation needs. When it is necessary to move goods to the upper shelf, the feed port of processing equipment, or the conveyor line, workers need to use additional lifting tools or move the goods multiple times, which makes the operation steps cumbersome and poses safety hazards. Utility Model Content

[0006] In view of this, the present invention provides a material transport trolley to solve the problems of high frictional resistance and inability to adjust the height of existing workshop handling trolleys.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A material transport trolley includes a base frame, two uprights symmetrically arranged on one side of the base frame, a support frame arranged above the base frame along the length of the base frame, and a plurality of rollers rotatably connected to the top of the support frame along the length of the support frame; the base frame is also provided with a lifting device for driving the support frame to rise and fall.

[0009] In this technical solution, it should be noted that the base frame is constructed from high-strength steel (such as Q235 or Q345 steel) through welding or profile assembly, providing a stable support structure for the entire trolley. Its surface is treated with rust prevention to extend its service life. The uprights are located on one side of the base frame and are made of the same material. The support frame is made of aluminum alloy or lightweight steel to reduce overall weight while ensuring load-bearing capacity. The rollers are made of hard plastic or stainless steel with a smooth surface to reduce the coefficient of friction. They are evenly arranged along the length of the support frame to support and guide the material's sliding, reducing resistance during material handling. The lifting device drives the support frame to move vertically to accommodate material loading and unloading needs at different heights. The overall working principle is as follows: when material is placed on the rollers of the support frame, the rollers' rotational characteristics convert the sliding friction between the material and the support frame into rolling friction, significantly reducing friction and facilitating easy pushing or pulling of materials for loading and unloading operations. Simultaneously, by adjusting the height of the support frame through the lifting device, it can be connected to shelves, production lines, or transport equipment of different heights. In summary, the effects of this solution are as follows: the roller structure significantly reduces material handling resistance, reduces the labor intensity of workers, and improves operating efficiency; the adjustable lifting function allows the trolley to adapt to various working scenarios and reduces the handling intensity of workers.

[0010] Preferably, the lifting device includes a cylinder and a connecting member. The cylinder is vertically mounted on the base frame, and the piston rod of the cylinder is connected to the support frame through the connecting member.

[0011] In this technical solution, it should be noted that the cylinder, as the actuator, drives the piston rod to move linearly via compressed air, providing lifting power for the support frame. Compared to electric screws or hydraulic systems, cylinders offer advantages such as fast response, simple maintenance, and low cost, making them suitable for short-stroke lifting scenarios with frequent start-stop operations. The cylinder is vertically fixed to the base frame, with the piston rod pointing upwards and its axis parallel to the column, ensuring that the driving force direction is consistent with the lifting direction. The connecting piece converts the linear motion of the piston rod into the vertical lifting of the support frame. Overall working principle: Lifting process: Air enters the cylinder, the piston rod extends, and pushes the support frame upwards along the column through the connecting piece, with the roller simultaneously rising to the target height (such as the rack inlet or production line height). Lowering process: Air exits the cylinder, the piston rod retracts, the connecting piece drives the support frame to descend and reset, and the roller returns to its initial low position, facilitating the next material loading. Through the cylinder-driven lifting device, this material transport trolley maintains the low-friction advantage of the roller while further improving the flexibility and economy of height adjustment.

[0012] Preferably, a crossbeam is fixed to the outer side of the column, a mounting base is fixedly connected to the piston rod of the cylinder, a sprocket is rotatably connected to the mounting base, the connecting member includes a chain, the chain meshes with the sprocket, one end of the chain is connected to the crossbeam, and the other end is connected to the support frame.

[0013] In this technical solution, it should be noted that the crossbeam (usually a rectangular channel steel) is fixed to the outside of the column, serving as the fixed end of the chain, bearing the chain tension and transmitting it to the column, thus enhancing the overall structural rigidity. The mounting base is fixed to the end of the cylinder piston rod and is typically a welded steel plate structure, providing a rotational support shaft for the sprocket. The sprocket is made of high-strength carbon steel or alloy steel, with surface hardening treatment to improve wear resistance. Its tooth profile precisely matches the chain, ensuring smooth transmission. The chain is selected as a roller chain or sleeve chain, possessing high tensile strength and fatigue resistance. One end of the chain is fixed to the crossbeam, and the other end is connected to the bottom of the support frame, forming a closed-loop transmission path. Working principle: Lifting process: When the cylinder piston rod extends, the mounting base and sprocket move upward synchronously. Since one end of the chain is fixed to the crossbeam, the upward movement of the sprocket causes the chain to roll on the sprocket, thereby pulling the support frame upward. At this point, the sprocket acts as a "movable pulley," converting the linear motion of the cylinder into the smooth lifting and lowering of the support frame. The chain tension is borne by the crossbeam, reducing the lateral load on the cylinder. During the descent: as the cylinder piston rod retracts, the sprocket moves downward, the chain loosens, and the support frame descends under its own weight, with the chain following suit. In this design, the sprocket and chain structure is similar to a movable pulley system, theoretically amplifying the driving force of the cylinder, allowing the trolley to carry heavier materials. Chain drive avoids the vibrations or swaying that may occur with traditional direct cylinder drive, especially under heavy loads, resulting in smoother lifting and lowering of the support frame and less material slippage. Compared to traditional scissor lifts or screw lifts, the sprocket and chain structure is more compact, saving internal space in the trolley and improving material loading efficiency.

[0014] Preferably, the number of chains and sprockets are two each, and they are symmetrically arranged on both sides of the mounting base.

[0015] In this technical solution, it should be noted that, based on sprocket and chain drive, this design further adopts a symmetrical layout of double chains and double sprockets. By optimizing the force distribution and transmission structure, the stability, balance, and reliability of the lifting process are significantly improved. The two sprockets are located on opposite sides of the mounting base, and the chain tension acts symmetrically on the support frame, avoiding tilting or jamming caused by unilateral force. Symmetrical tension ensures even stress distribution on the column and base frame, reducing the risk of localized deformation. Compared to a single-chain design, the double-chain layout reduces stress concentration in structural components, extending the equipment's service life. With both chains working synchronously, if one breaks unexpectedly, the other can still maintain some lifting function, reducing the risk of sudden failures. When the double sprockets rotate synchronously, the meshing between the chain and sprocket is smoother, especially under high-speed lifting or heavy-load conditions, reducing vibration amplitude and preventing material swaying or falling.

[0016] Preferably, the column is provided with a sliding groove, and the support frame is rotatably connected with a pulley, which is slidably embedded in the sliding groove.

[0017] In this technical solution, it should be noted that the pulleys are slidably embedded within the grooves. This design, through the cooperation between the grooves and pulleys, further enhances the stability and reliability of the material transport trolley. The inner wall of the groove is polished or hardened to reduce the coefficient of friction, providing the pulleys with a precise movement trajectory. Two to four pulleys are rotatably connected to the side of the support frame via pivot pins. The pulleys are made of bearing steel or nylon, and their surfaces are precision-machined to achieve low-resistance rolling. During operation, the pulleys roll within the grooves, restricting the support frame to move only in the vertical direction, effectively suppressing lateral sway. Compared to traditional slider guides, the rolling friction pulley system reduces vibration amplitude and noise.

[0018] Preferably, the support frame is further provided with a stop, the stop is vertically arranged, and the stop is detachably connected to the support frame. The stop is provided with a post, the post is located between two adjacent rollers, the post is provided with a slot, and the bottom of the stop is inserted into the slot.

[0019] In this technical solution, it should be noted that the baffle is typically made of high-strength pipe or channel steel and is vertically arranged on the edge of the support frame. Its height can be customized according to the material type to prevent the material from slipping during transportation. The insert is made of aluminum alloy or stainless steel and is fixed at the gap between adjacent rollers. The slot at its top matches the bottom size of the baffle to form a stable embedded connection.

[0020] Preferably, there are multiple insertion posts, and the multiple insertion posts are spaced apart along the length direction of the support frame.

[0021] In this technical solution, it should be noted that the inserts are arranged at equal intervals, so that the baffle can be selected at the optimal installation position according to the size of the material.

[0022] Preferably, wheels are rotatably connected to the base frame.

[0023] In this technical solution, it should be noted that the wheels are made of high-strength polyurethane or rubber and are hinged to the base frame via bearings. Their diameter ranges from 100 to 200 mm (which can be adjusted according to load requirements). The wheel surface is designed with anti-slip textures to enhance ground adhesion.

[0024] Preferably, a handle is fixedly connected to the column.

[0025] In this technical solution, it should be noted that the handle is made of round steel pipe or engineering plastic, with a non-slip rubber layer on the surface to improve grip comfort. Its installation height is typically set at 800-1000mm (ergonomically designed) for easy standing and pushing by the operator. The handle is fixed to the column by welding or bolts and can withstand a horizontal tensile force of over 500N, with structural strength meeting heavy-duty handling requirements. The symmetrical handle design on both sides of the column allows the operator to control the trolley from different directions, especially in narrow passages or turning scenarios, where the pushing angle can be flexibly adjusted.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0027] 1. In this utility model, the roller structure significantly reduces the resistance of material handling, reduces the labor intensity of workers, and improves operating efficiency; the adjustable lifting function makes the trolley adaptable to various working scenarios and reduces the handling intensity of workers.

[0028] 2. In this invention, the sprocket and chain structure is similar to a movable pulley system, which theoretically amplifies the driving force of the cylinder, enabling the trolley to carry heavier materials. Chain drive avoids the vibration or swaying that may occur with traditional direct cylinder drive, especially under heavy loads, resulting in smoother lifting of the support frame and less material slippage. Compared to traditional scissor lift or screw lift mechanisms, the sprocket and chain structure is more compact, saving internal space in the trolley and improving material loading efficiency.

[0029] 3. In this invention, compared to a single-chain design, the double-chain layout reduces stress concentration in structural components and extends the equipment's service life. With both chains working synchronously, if one breaks unexpectedly, the other can still maintain some lifting function, reducing the risk of sudden malfunctions. When the two sprockets rotate synchronously, the meshing between the chain and the sprocket is smoother, especially under high-speed lifting or heavy-load conditions, reducing vibration amplitude and preventing material from shaking or falling.

[0030] 4. In this utility model, the pulley is slidably embedded in the groove. This design, through the cooperation of the groove and the pulley, further improves the stability and reliability of the material transport trolley. During operation, the pulley rolls within the groove, restricting the support frame to move only in the vertical direction, effectively suppressing lateral swaying. Compared with traditional slider guidance, the rolling friction pulley system can reduce vibration amplitude and noise.

[0031] 5. In this utility model, multiple insertion posts are provided, and the multiple insertion posts are arranged at equal intervals, so that the baffle can select the best installation position according to the material size. Attached Figure Description

[0032] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the oblique stereoscopic structure;

[0035] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure without pillars;

[0036] Figure 4 This is a three-dimensional structural diagram of the support frame of this utility model;

[0037] The components are: 1-base frame, 2-wheel, 3-support frame, 4-roller, 5-stop frame, 6-column, 7-cylinder, 8-beam, 9-mounting seat, 10-sprocket, 11-chain, 12-slide groove, 13-handle, 14-pulley, 15-insertion column, 16-slot. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0044] Example 1

[0045] like Figures 1-4 As shown in the figure, this utility model discloses a material transport trolley, including a base frame 1. Two uprights 6 are symmetrically arranged on one side of the base frame 1. A support frame 3 is provided above the base frame 1, and the support frame 3 is arranged along the length direction of the base frame 1. Multiple rollers 4 are rotatably connected to the top of the support frame 3, and the multiple rollers 4 are arranged along the length direction of the support frame 3. A lifting device is also provided on the base frame 1 to drive the support frame 3 to rise and fall. It should be noted that the base frame 1 is made of high-strength steel (such as Q235 or Q345 steel) welded or assembled from profiles, providing a stable support structure for the entire trolley. Its surface is treated with anti-rust to extend its service life. The uprights 6 are located on one side of the base frame 1 and are made of the same material as the base frame 1. The support frame 3 is made of aluminum alloy or light steel to reduce the overall weight while ensuring load-bearing capacity. The rollers 4 are made of hard plastic or stainless steel with a smooth surface to reduce the coefficient of friction. They are evenly arranged along the length direction of the support frame 3 to carry and guide the material to slide, reducing the resistance during the material handling process. The lifting device drives the support frame 3 to move vertically, adapting to material loading and unloading needs at different heights. The overall working principle is as follows: when material is placed on the rollers 4 of the support frame 3, the rotational characteristics of the rollers 4 convert the sliding friction between the material and the support frame 3 into rolling friction, significantly reducing friction and facilitating easy pushing or pulling of materials for loading and unloading operations. Simultaneously, by adjusting the height of the support frame 3 through the lifting device, it can be connected to shelves, production lines, or transport equipment of different heights. In summary, the advantages of this solution are: the roller 4 structure significantly reduces material handling resistance, reduces worker workload, and improves operational efficiency; the adjustable lifting function allows the trolley to adapt to various operating scenarios, reducing the handling intensity for workers.

[0046] like Figure 1As shown, in this embodiment, wheels 2 are rotatably connected to the base frame 1. It should be noted that the wheels 2 are made of high-strength polyurethane or rubber, and are hinged to the base frame 1 through bearings. Their diameter ranges from 100 to 200 mm (which can be adjusted according to load requirements), and the wheel surface is designed with anti-slip textures to enhance ground adhesion.

[0047] like Figure 2 As shown, in this embodiment, a handle 13 is fixedly connected to the column 6. It should be noted that the handle 13 is made of circular steel tubing or engineering plastic, with a non-slip rubber layer covering the surface to improve grip comfort. Its installation height is typically set at 800-1000mm (in accordance with ergonomic design) to facilitate standing and pushing by the operator. The handle 13 is fixed to the column 6 by welding or bolts and can withstand a horizontal tensile force of over 500N, with structural strength meeting heavy-duty handling requirements. The symmetrical arrangement of handles 13 on both sides of the column 6 allows the operator to control the trolley from different directions, especially in narrow passages or turning scenarios, where the pushing angle can be flexibly adjusted.

[0048] Example 2

[0049] like Figure 2 and Figure 3 As shown, this embodiment is largely the same as the previous embodiment, except that the lifting device includes a cylinder 7 and a connecting piece. The cylinder 7 is vertically mounted on the base frame 1, and the piston rod of the cylinder 7 is connected to the support frame 3 via the connecting piece. It should be noted that the cylinder 7, as an actuator, drives the piston rod to move linearly using compressed air, providing lifting power to the support frame 3. Compared to electric screws or hydraulic systems, the cylinder 7 has advantages such as fast response, simple maintenance, and low cost, making it suitable for short-stroke lifting scenarios with frequent starts and stops. The cylinder 7 is vertically fixed on the base frame 1, with the piston rod pointing upwards and its axis parallel to the column 6, ensuring that the driving force direction is consistent with the lifting direction. The connecting piece converts the linear motion of the piston rod into the vertical lifting of the support frame 3. Overall working principle: Lifting process: Air enters the cylinder 7, the piston rod extends, and pushes the support frame 3 upwards along the column 6 via the connecting piece, while the roller 4 simultaneously rises to the target height (such as the shelf inlet or production line height). The descent process: Cylinder 7 exhausts air, the piston rod retracts, the connecting piece drives the support frame 3 to descend and reset, and the roller 4 returns to its initial low position, facilitating the next loading of materials. Through the lifting device driven by cylinder 7, this material transport trolley maintains the low-friction advantage of the roller 4 while further improving the flexibility and economy of height adjustment.

[0050] like Figure 2 and Figure 3As shown, in this embodiment, a crossbeam 8 is fixed to the outer side of the column 6, and a mounting base 9 is fixedly connected to the piston rod of the cylinder 7. A sprocket 10 is rotatably connected to the mounting base 9. The connecting component includes a chain 11, which meshes with the sprocket 10. One end of the chain 11 is connected to the crossbeam 8, and the other end is connected to the support frame 3. It should be noted that the crossbeam 8 (usually a rectangular channel steel) is fixed to the outer side of the column 6, serving as the fixed end of the chain 11, bearing the tension of the chain 11 and transmitting it to the column 6, thus enhancing the overall structural rigidity. The mounting base 9 is fixed to the end of the piston rod of the cylinder 7 and is usually a welded steel plate structure, providing a rotational support shaft for the sprocket 10. The sprocket 10 is made of high-strength carbon steel or alloy steel, with surface hardening treatment to improve wear resistance. Its tooth profile precisely matches the chain 11, ensuring smooth transmission. The chain 11 is a roller chain or sleeve chain, possessing high tensile strength and fatigue resistance. One end of chain 11 is fixed to the crossbeam 8, and the other end is connected to the bottom of the support frame 3, forming a closed-loop transmission path. Working principle: Lifting process: When the piston rod of cylinder 7 extends, the mounting base 9 and sprocket 10 move upwards synchronously. Since one end of chain 11 is fixed to the crossbeam 8, the rise of sprocket 10 causes chain 11 to roll on sprocket 10, thereby pulling the support frame 3 upwards. At this time, sprocket 10 acts as a "moving pulley 14," converting the linear motion of cylinder 7 into the smooth lifting and lowering of the support frame 3, and the tension of chain 11 is borne by the crossbeam 8, reducing the lateral load on cylinder 7. Lowering process: When the piston rod of cylinder 7 retracts, sprocket 10 moves downwards, chain 11 relaxes, and the support frame 3 descends under its own weight, with chain 11 following suit. In this design, the structure of sprocket 10 and chain 11 is similar to the moving pulley 14 system, theoretically amplifying the driving force of cylinder 7, enabling the trolley to carry heavier materials. The chain drive 11 avoids the vibration or shaking that may occur when the traditional cylinder 7 is directly driven. Especially under heavy loads, the lifting process of the support frame 3 is more stable, and the material is less likely to slip. Compared with traditional scissor lift or screw lift mechanisms, the sprocket 10 and chain 11 structure is more compact, which can save internal space of the trolley and improve material loading efficiency.

[0051] like Figure 2 and Figure 3As shown, in this embodiment, there are two chains 11 and two sprockets 10, symmetrically arranged on both sides of the mounting base 9. It should be noted that, based on the chain-sprocket drive, this design further adopts a symmetrical layout of double chains 11 and double sprockets 10. By optimizing the force distribution and transmission structure, the stability, balance, and reliability of the lifting process are significantly improved. The two sprockets 10 are located on both sides of the mounting base 9, and the tension of the chain 11 acts symmetrically on the support frame 3, avoiding tilting or jamming caused by unilateral force. The symmetrical tension ensures that the column 6 and the base frame 1 are subjected to uniform force, reducing the risk of local deformation. Compared to the single chain 11 design, the double chain 11 layout can reduce the stress concentration of structural components and extend the service life of the equipment. The two chains 11 work synchronously; if one breaks unexpectedly, the other can still maintain some lifting function, reducing the risk of sudden failure. When the double sprockets 10 rotate synchronously, the meshing between the chain 11 and the sprockets 10 is smoother. Especially under high-speed lifting or heavy-load conditions, the vibration amplitude can be reduced, preventing materials from shaking or falling.

[0052] like Figure 2 and Figure 3 As shown, in this embodiment, the column 6 is provided with a groove 12, and the support frame 3 is rotatably connected to a pulley 14, which is slidably embedded in the groove 12. It should be noted that the slidable embedding of the pulley 14 in the groove 12 further enhances the stability and reliability of the material transport trolley through the cooperation between the groove 12 and the pulley 14. The inner wall of the groove 12 is polished or hardened to reduce the coefficient of friction and provide a precise movement trajectory for the pulley 14. Two to four pulleys 14 are rotatably connected to the side of the support frame 3 via pins. The pulleys 14 are made of bearing steel or nylon, and their surface is precision-machined to achieve low-resistance rolling. During operation, the pulleys 14 roll within the groove 12, restricting the support frame 3 to move only in the vertical direction, effectively suppressing lateral swaying. Compared with traditional slider guidance, the rolling friction pulley 14 system reduces vibration amplitude and noise.

[0053] Example 3

[0054] like Figure 4As shown, this embodiment is largely the same as the previous embodiment, except that the support frame 3 is further provided with a baffle 5. The baffle 5 is vertically arranged and detachably connected to the support frame 3. The baffle 5 is provided with a post 15, which is located between two adjacent rollers 4. The post 15 is provided with a slot 16, and the bottom of the baffle 5 is inserted into the slot 16. It should be noted that the baffle 5 is usually made of high-strength pipe or channel steel and is arranged vertically on the edge of the support frame 3. Its height can be customized according to the material type to prevent the material from slipping during transportation. The post 15 is made of aluminum alloy or stainless steel and is fixed in the gap between adjacent rollers 4. The slot 16 opened at its top matches the bottom size of the baffle 5 to form a stable embedded connection.

[0055] like Figure 4 As shown, in this embodiment, there are multiple insertion posts 15, which are spaced apart along the length of the support frame 3. It should be noted that the insertion posts 15 are arranged at equal intervals, allowing the baffle 5 to select the optimal installation position based on the material size.

[0056] The working principle of this utility model is as follows:

[0057] The operator holds the handle 13 on the column 6 and pushes the trolley to the side of the material. Air is supplied to the cylinder 7 through the control panel. The piston rod extends and drives the double sprocket 10 on the mounting base 9 to move upward synchronously. Since one end of the chain 11 is fixed to the crossbeam 8 and the other end is connected to the support frame 3, when the sprocket 10 rotates, it pulls the support frame 3 up or down along the slide groove 12 of the column 6 through the movable pulley 14. The pulley 14 on the side of the support frame 3 rolls and guides in the slide groove 12 to ensure smooth lifting without shaking. Once the support frame 3 has descended to a suitable height, the material is placed on the roller 4 at the top of the support frame 3. The roller 4 converts sliding friction into rolling friction, easily pushing the material onto the support frame 3. According to the material size, the stop 5 is inserted into the corresponding insert 15. Then, the trolley is pushed to the designated position, and then the cylinder 7 is activated again. The piston rod extends and, through the double chain 11 and double sprocket 10 transmission mechanism, raises the support frame 3 to the target height (such as the rack feed inlet). The trolley is then pushed to connect the roller 4 with the target equipment, and the material is unloaded by rolling through the roller 4.

[0058] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material transport trolley, characterized in that, Includes a base frame (1), two uprights (6) are symmetrically arranged on one side of the base frame (1), a support frame (3) is provided above the base frame (1), the support frame (3) is arranged along the length direction of the base frame (1), and multiple rollers (4) are rotatably connected to the top of the support frame (3), the multiple rollers (4) are arranged along the length direction of the support frame (3); The base frame (1) is also equipped with a lifting device, which is used to drive the support frame (3) to rise and fall.

2. The material transport trolley according to claim 1, characterized in that, The lifting device includes a cylinder (7) and a connecting piece. The cylinder (7) is vertically mounted on the base frame (1), and the piston rod of the cylinder (7) is connected to the support frame (3) through the connecting piece.

3. A material transport trolley according to claim 2, characterized in that, A crossbeam (8) is fixed to the outside of the column (6). A mounting base (9) is fixedly connected to the piston rod of the cylinder (7). A sprocket (10) is rotatably connected to the mounting base (9). The connecting component includes a chain (11). The chain (11) meshes with the sprocket (10). One end of the chain (11) is connected to the crossbeam (8), and the other end is connected to the support frame (3).

4. A material transport trolley according to claim 3, characterized in that, The number of chains (11) and sprockets (10) are two each, and they are symmetrically arranged on both sides of the mounting base (9).

5. A material transport trolley according to claim 1, characterized in that, The column (6) is provided with a sliding groove (12), and the support frame (3) is rotatably connected with a pulley (14), which is slidably embedded in the sliding groove (12).

6. A material transport trolley according to claim 1, characterized in that, The support frame (3) is also provided with a baffle (5), which is vertically arranged and is detachably connected to the support frame (3).

7. A material transport trolley according to claim 6, characterized in that, The baffle (5) is provided with a pin (15), the pin (15) is located between two adjacent rollers (4), the pin (15) is provided with a slot (16), and the bottom of the baffle (5) is inserted into the slot (16).

8. A material transport trolley according to claim 7, characterized in that, There are multiple insertion posts (15), and the multiple insertion posts (15) are spaced apart along the length direction of the support frame (3).

9. A material transport trolley according to claim 1, characterized in that, Wheels (2) are rotatably connected to the base frame (1).

10. A material transport trolley according to claim 1, characterized in that, A handle (13) is fixedly connected to the column (6).

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