A material handling cart

Abstract

The utility model provides a kind of material handling cart, including main profile frame, mobile wheel device, handle and lifting device.Lifting device includes lifting bottom frame, lifting top frame, two scissor mechanisms symmetrically arranged between the two, nitrogen spring, coaxial rod and control handle.Cylinder of nitrogen spring is hinged to lifting bottom frame, piston rod is fixed on the coaxial rod of connecting scissor mechanism middle part;Control handle is connected with the mechanical release valve of nitrogen spring by push-pull flexible shaft, realizes remote control lifting and locking.The utility model is combined by nitrogen spring and scissor mechanism, realizes remote control using control handle, so that lifting operation is very labor-saving, single hand can easily complete, greatly reduces labor intensity, improves material handling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of logistics transfer equipment technology, and in particular to a material handling trolley. Background Technology

[0002] Material handling trolleys are a widely used basic piece of equipment in manufacturing, warehousing, logistics, and assembly workshops, used for short to medium-distance material handling. Traditional trolleys often feature fixed platforms with non-adjustable heights. When moving materials between workstations, shelves, or production lines at different heights, workers frequently have to bend over and lift, or use other props to elevate them. This is not only labor-intensive and inefficient, but also increases the risk of injury to personnel or damage to materials from collisions, posing certain safety hazards. While some existing technologies have improved material handling equipment with lifting functions, most are structurally complex, not convenient to operate, lack stability during lifting, or lack effective positioning and anti-collision designs, making it difficult to achieve efficient, labor-saving, and safe material handling in fast-paced industrial environments.

[0003] Therefore, there is an urgent need for a material handling trolley that is easy to operate, has smooth lifting and lowering, precise positioning, and controllable cost. Utility Model Content

[0004] To address the above problems, this utility model provides a material handling trolley, which includes:

[0005] The main profile frame includes a first base frame and a second base frame that are parallel to each other;

[0006] A movable wheel device is installed below the first base frame;

[0007] Handles are installed above the main profile frame; and,

[0008] The lifting device includes two scissor lift mechanisms, nitrogen springs, coaxial rods, control handles, a lifting base frame, and a lifting top frame; wherein,

[0009] The lifting base frame is fixed above the second base frame;

[0010] The lifting top frame and the lifting bottom frame are parallel to each other;

[0011] The two scissor mechanisms are arranged parallel to each other and symmetrically between the lifting bottom frame and the lifting top frame;

[0012] Each of the scissor lift mechanisms includes a first link and a second link, wherein the first link and the second link are coaxially coupled at their middle portions;

[0013] The coaxial rod passes through the middle of the first and second rods of the two scissor mechanisms, respectively;

[0014] The nitrogen spring includes a cylinder, a piston rod, and a mechanical release valve. The cylinder is hinged above the lifting base frame, the piston rod is fixed on the coaxial rod, and the mechanical release valve is located at the end of the piston rod away from the cylinder.

[0015] The control handle is located on the lower side of one side of the lifting top frame, and the control handle is connected to the mechanical release valve of the nitrogen spring via a push-pull flexible shaft.

[0016] In an optional technical solution of this utility model, the lifting device further includes a first slide groove, a second slide groove, a first roller, a third slide groove, a fourth slide groove, a second roller, a first sliding bearing, and a second sliding bearing;

[0017] The first slide groove and the second slide groove are symmetrically fixed to the inner side of the lifting base frame. The first sliding bearing is provided at both ends of the first roller. The first sliding bearing at both ends is respectively housed in the first slide groove and the second slide groove and can slide along them.

[0018] The third and fourth slide grooves are symmetrically fixed to the inner side of the lifting top frame. The second roller is provided with the second sliding bearing at both ends. The second sliding bearings at both ends are respectively housed in the third and fourth slide grooves and can slide along them.

[0019] In the optional technical solution of this utility model, each of the scissor mechanisms includes a bottom first end, a bottom second end, a top first end, and a top second end;

[0020] The bottom first ends of both scissor lift mechanisms are hinged to the inner side of the lifting base frame, and the bottom second ends of both scissor lift mechanisms are respectively hinged to the first roller;

[0021] The first top ends of both scissor lift mechanisms are hinged to the lifting top frame, and the second top ends of both scissor lift mechanisms are respectively hinged to the second roller.

[0022] The bottom end of the first rod is the bottom first end of the scissor mechanism, and the top end of the first rod is the top second end of the scissor mechanism.

[0023] The bottom end of the second rod is the bottom second end of the scissor mechanism, and the top end of the second rod is the top first end of the scissor mechanism.

[0024] In an optional technical solution of this utility model, a support frame is fixed above the lifting top frame, and a first smooth strip and a second smooth strip are provided on the support frame.

[0025] In an optional technical solution of this utility model, the lifting top frame of the lifting device can be raised and lowered within a range of 500mm to 1300mm from the ground.

[0026] In an optional technical solution of this utility model, the material handling trolley further includes four guide members disposed at the front of the main profile frame.

[0027] In an optional technical solution of this utility model, each guide member includes a body and a guide portion disposed at the end of the body that is inclined toward the inside of the material handling trolley;

[0028] The guide component is fixed to the main profile frame via its body.

[0029] In an optional technical solution of this utility model, the included angle between the guide portion and the body is 30 to 60 degrees.

[0030] In an optional technical solution of this utility model, the material handling trolley further includes a material box, which is placed on the first and second flow bars of the support frame.

[0031] In an optional technical solution of this utility model, the material handling trolley further includes a spare material box, which is placed on the third and fourth flow bars on the first base frame.

[0032] Compared with the prior art, the present invention has at least the following technical effects:

[0033] 1. By combining a nitrogen spring with a scissor mechanism and using a control handle for remote operation, the lifting operation is very labor-saving and can be easily completed with one hand, greatly reducing labor intensity and improving material handling efficiency.

[0034] 2. The symmetrically arranged scissor lift mechanism, combined with the slide groove and sliding bearing structure, effectively limits lateral swaying and offset during the lifting process, ensuring smooth operation and reliability; the locking function of the nitrogen spring provides reliable support at any height, preventing accidental falls and ensuring safety.

[0035] 3. The guides at the front of the trolley effectively prevent collisions with shelves or docking devices and assist in achieving quick and accurate positioning, thus improving ease of operation.

[0036] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0037] Figure 1 This is a first-view structural schematic diagram of the material handling trolley in the embodiment of this utility model.

[0038] Figure 2 This is a second-view structural schematic diagram of the material handling trolley in the embodiment of this utility model.

[0039] Figure 3 This is a partial structural diagram of the lifting device in an embodiment of the present utility model.

[0040] Figure 4 This is a schematic diagram of the structure of the material handling trolley in the embodiment of this utility model, including a material box and a spare material box.

[0041] Figure label:

[0042] Main profile frame 100; first base frame 110; second base frame 120; moving wheel device 130; handle 140; lifting device 200; scissor mechanism 210; first rod 211; second rod 212; nitrogen spring 220; cylinder 221; piston rod 222; coaxial rod 230; control handle 240; lifting base frame 250; lifting top frame 260; first slide groove 271; second slide groove 272; first roller 273; third slide groove 281; fourth slide groove 282; second roller 283; first sliding bearing 291; second sliding bearing 292; support frame 300; first flow bar 310; second flow bar 320; guide component 400; body 410; guide part 420; material box 500; spare material box 600; third flow bar 710; fourth flow bar 720. Detailed Implementation

[0043] To make the technical solutions and beneficial effects of the embodiments of this utility model more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this utility model pertains.

[0044] In the description of the embodiments of this utility model, the terms "center", "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical (or vertical)", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and should not be construed as a limitation of this application.

[0045] In the embodiments of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature defined with "first" and "second" can explicitly include at least one of those features. In the description of the embodiments of this utility model, "multiple" means at least two, such as two, three, etc.

[0046] In the embodiments of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this embodiment of the invention, unless otherwise explicitly defined, "on" the first feature and the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "on" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the horizontal level of the first feature is higher than the horizontal level of the second feature.

[0048] Obviously, the embodiments described in this utility model are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] Please refer to Figure 1 and Figure 2This utility model provides a material handling trolley, comprising: a main profile frame 100, including a first base frame 110 and a second base frame 120 parallel to each other; a moving wheel device 130 installed below the first base frame 110; a handle 140 installed above the main profile frame 100; and a lifting device 200, including two scissor mechanisms 210, a nitrogen spring 220, a coaxial rod 230, a control handle 240, a lifting base frame 250, and a lifting top frame 260; wherein, the lifting base frame 250 is fixed above the second base frame 120; the lifting top frame 260 is parallel to the lifting base frame 250; the two scissor mechanisms 210 are parallel to each other and symmetrically arranged between the lifting base frame 250 and the lifting top frame 260; each scissor mechanism 210 includes... The first rod 211 and the second rod 212 are coaxially coupled at their middle portions; the coaxial rod 230 passes through the middle portions of the first rod 211 and the second rod 212 of the two scissor mechanisms 210 respectively; the nitrogen spring 220 includes a cylinder 221, a piston rod 222 and a mechanical release valve (not shown), the cylinder 221 is hinged above the lifting base frame 250, the piston rod 222 is fixed to the coaxial rod 230, and the mechanical release valve is located at the end of the piston rod 222 away from the cylinder 221; the control handle 240 is located below one side of the lifting top frame 260, and the control handle 240 is connected to the mechanical release valve of the nitrogen spring 220 via a push-pull flexible shaft (not shown).

[0050] In this embodiment, the nitrogen spring 220 can be selected from a lockable nitrogen spring, but is not limited thereto. Those skilled in the art can select other types of nitrogen springs that meet the aforementioned functional requirements according to actual needs.

[0051] In this embodiment, the push-pull flexible shaft can be selected from Bowden cable, with one end connected to the control handle 240 and the other end connected to the mechanical release valve of the nitrogen spring 220. Through this flexible shaft transmission method, the operator can remotely control the lifting top frame 260 via the control handle 240. When the control handle 240 is pressed, the flexible shaft pulls the mechanical release valve, opening the valve of the nitrogen spring, and the lifting device immediately enters a freely adjustable state, achieving smooth lifting. After releasing the handle, the mechanical release valve resets, the nitrogen spring locks, and the current height is reliably maintained. This structure not only saves effort and responds quickly, but also significantly improves the convenience and safety of material handling.

[0052] According to this embodiment, when transporting materials, workers can adjust the lifting frame 260 to a height close to the material to be transported by operating the control handle 240, and then smoothly move the material into the trolley. Afterwards, by holding the handle 140, the entire trolley is pushed to the target workstation, and the control handle 240 is operated again to raise the lifting frame 260 to be flush with the target platform, easily transferring the material to the corresponding position. This effectively avoids the heavy physical labor of workers frequently bending over to move materials, and is especially suitable for short-to-medium distance material turnover within the workshop. The lifting operation is labor-saving and positioning is convenient. While significantly reducing labor intensity and improving handling efficiency, it also reduces the risk of material falling or personnel injury caused by manual lifting, enhancing operational safety and logistics stability.

[0053] Please refer to Figure 3 In some embodiments, the lifting device further includes a first slide groove 271, a second slide groove 272, a first roller 273, a third slide groove 281, a fourth slide groove 282, a second roller 283, a first sliding bearing 291, and a second sliding bearing 292. The first slide groove 271 and the second slide groove 272 are symmetrically fixed to the inner side of the lifting base frame 250. The first roller 273 is provided with the first sliding bearing 291 at both ends, and the first sliding bearing 291 at both ends is respectively housed in the first slide groove 271 and the second slide groove 272 and can slide along them. The third slide groove 281 and the fourth slide groove 282 are symmetrically fixed to the inner side of the lifting top frame 260. The second roller 283 is provided with the second sliding bearing 292 at both ends, and the second sliding bearing 292 at both ends is respectively housed in the third slide groove 281 and the fourth slide groove 282 and can slide along them.

[0054] In this embodiment, the chute engages with rollers bearing sliding bearings at both ends, providing stable guidance and support for the deployment and retraction of the scissor lift mechanism 210, effectively limiting lateral deviation and swaying that may occur during lifting. Simultaneously, the sliding bearings within the chute significantly reduce frictional resistance, not only lowering the force required to operate the control handle 240, making lifting easier and smoother, but also reducing component wear, improving the durability and reliability of the entire lifting device 200, and greatly facilitating frequent lifting operations for workers in logistics sites to handle and connect materials.

[0055] Please continue to refer to this. Figure 3In some embodiments, each of the scissor lift mechanisms 210 includes a bottom first end, a bottom second end, a top first end, and a top second end; the bottom first ends of both scissor lift mechanisms 210 are hinged to the inner side of the lifting base frame 250, and the bottom second ends of both scissor lift mechanisms 210 are respectively hinged to the first roller 273; the top first ends of both scissor lift mechanisms 210 are hinged to the lifting top frame 260, and the top second ends of both scissor lift mechanisms 210 are respectively hinged to the second roller 283; the bottom end of the first rod 211 is the bottom first end of the scissor lift mechanism 210, and the top end of the first rod 211 is the top second end of the scissor lift mechanism 210; the bottom end of the second rod 212 is the bottom second end of the scissor lift mechanism 210, and the top end of the second rod 212 is the top first end of the scissor lift mechanism 210.

[0056] Please continue to refer to this. Figure 1 and Figure 2 In some embodiments, a support frame 300 is fixed above the lifting top frame 260, and the support frame is provided with a first flow bar 310 and a second flow bar 320 that are parallel to each other. Thus, the structure of the support frame 300 prevents damage to the lifting device 200 during frequent loading and unloading of materials, extending the service life of the equipment. Furthermore, the flow bars on the support frame allow materials to move smoothly into and out of the cart along the flow bars, greatly reducing frictional resistance during the pushing process and facilitating the work of logistics personnel.

[0057] In some embodiments, the lifting top frame 260 of the lifting device 200 can be raised and lowered within a range of 500mm to 1300mm from the ground; for example, the lifting top frame 260 of the lifting device 200 can be raised and lowered within a range of 500mm, 550mm, 600mm, 650mm, 700mm, 750mm, 800mm, 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1250mm or 1300mm from the ground, but is not limited to the listed values, and other unlisted values ​​within the range are also applicable.

[0058] Please continue to refer to this. Figure 1 and Figure 2 In some embodiments, in order to prevent the material handling trolley from colliding with the shelf or docking device during the handling process and to assist in achieving accurate positioning between the trolley and the docking device, the material handling trolley also includes four guide members 400 disposed at the front of the main profile frame 100.

[0059] Please continue to refer to this. Figure 1 and Figure 2In some embodiments, each guide member 400 includes a body 410 and a guide portion 420 disposed at the end of the body 410 and inclined toward the inside of the material handling trolley; the guide member 400 is fixed to the main profile frame 100 by the body 410. In this embodiment, the body 410 is fixed to the front of the main profile frame 100 located between the first base frame 110 and the second base frame 120, and the guide member 400 is oriented towards the forward direction of the material handling trolley, and collision avoidance and guiding positioning are achieved by contacting the external docking device through the guide portion 420.

[0060] In some embodiments, the angle between the guide portion 420 and the body 410 is 30 to 60 degrees. For example, the angle between the guide portion 420 and the body 410 can be 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, or 60 degrees, but is not limited to the listed values; other unlisted values ​​within the range are also applicable.

[0061] Please refer to Figure 4 In some embodiments, the material handling trolley further includes a material box 500, which is placed on a first flow bar 310 and a second flow bar 320 on the support frame 300.

[0062] Please continue to refer to this. Figure 4 In some embodiments, the material handling trolley further includes a spare material box 600, which is placed on the third flow bar 710 and the fourth flow bar 720 on the first base frame 110.

[0063] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A material handling cart, characterized by, include: The main profile frame includes a first base frame and a second base frame that are parallel to each other; A movable wheel device is installed below the first base frame; A handle is installed above the main profile frame; and, The lifting device includes two scissor lift mechanisms, nitrogen springs, coaxial rods, control handles, a lifting base frame, and a lifting top frame; wherein, The lifting base frame is fixed above the second base frame; The lifting top frame and the lifting bottom frame are parallel to each other; The two scissor mechanisms are arranged parallel to each other and symmetrically between the lifting bottom frame and the lifting top frame; Each of the scissor lift mechanisms includes a first link and a second link, wherein the first link and the second link are coaxially coupled at their middle portions; The coaxial rod passes through the middle of the first and second rods of the two scissor mechanisms, respectively; The nitrogen spring includes a cylinder, a piston rod, and a mechanical release valve. The cylinder is hinged above the lifting base frame, the piston rod is fixed on the coaxial rod, and the mechanical release valve is located at the end of the piston rod away from the cylinder. The control handle is located on the lower side of one side of the lifting top frame, and the control handle is connected to the mechanical release valve of the nitrogen spring via a push-pull flexible shaft.

2. The material handling trolley according to claim 1, characterized in that, The lifting device further includes a first slide groove, a second slide groove, a first roller, a third slide groove, a fourth slide groove, a second roller, a first sliding bearing, and a second sliding bearing; The first slide groove and the second slide groove are symmetrically fixed to the inner side of the lifting base frame. The first sliding bearing is provided at both ends of the first roller. The first sliding bearing at both ends is respectively housed in the first slide groove and the second slide groove and can slide along them. The third and fourth slide grooves are symmetrically fixed to the inner side of the lifting top frame. The second roller is provided with the second sliding bearing at both ends. The second sliding bearings at both ends are respectively housed in the third and fourth slide grooves and can slide along them.

3. The material handling cart of claim 2, wherein, Each of the scissor mechanisms includes a bottom first end, a bottom second end, a top first end, and a top second end; The bottom first ends of both scissor lift mechanisms are hinged to the inner side of the lifting base frame, and the bottom second ends of both scissor lift mechanisms are respectively hinged to the first roller; The first top ends of both scissor lift mechanisms are hinged to the lifting top frame, and the second top ends of both scissor lift mechanisms are respectively hinged to the second roller. The bottom end of the first rod is the bottom first end of the scissor mechanism, and the top end of the first rod is the top second end of the scissor mechanism. The bottom end of the second rod is the bottom second end of the scissor mechanism, and the top end of the second rod is the top first end of the scissor mechanism.

4. The material handling cart of claim 1, wherein, A support frame is fixed above the lifting top frame, and the support frame is provided with a first smooth strip and a second smooth strip that are parallel to each other.

5. The material handling trolley according to any one of claims 1-4, characterized in that, The lifting frame of the lifting device can be raised and lowered within a range of 500mm to 1300mm from the ground.

6. The material handling cart of claim 1, wherein, The material handling trolley also includes four guides located at the front of the main profile frame.

7. The material handling trolley according to claim 6, characterized in that, Each of the guide members includes a body and a guide portion disposed at the end of the body that is inclined toward the inside of the material handling trolley; The guide component is fixed to the main profile frame via its body.

8. The material handling cart of claim 7, wherein, The angle between the guide portion and the main body is 30 to 60 degrees.

9. The material handling cart of claim 4, wherein, The material handling trolley also includes a material box, which is placed on the first and second flow bars of the support frame.

10. The material handling trolley according to claim 9, characterized in that, The material handling trolley also includes a spare material box, which is placed on the third and fourth flow bars on the first base frame.

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