A telescopic pull rod tortoise car capable of carrying various part baskets

Abstract

The utility model discloses a telescopic pull rod tortoise car of a variety of parts basket can be transferred, including chassis and handle, handle includes two branch handle, and two branch handle are fixedly connected through handle connecting rod level, still include telescopic outer pull rod, and one end of telescopic outer pull rod is connected with annular round steel, and annular round steel rotatablely is sleeved on handle connecting rod of one side of short side, and the other end of telescopic outer pull rod is coaxially fixedly connected with metal sheet, and the centre of metal sheet is provided with the clamping hole, still include telescopic inner pull rod, and telescopic inner pull rod includes the clamping section and push -and -pull section of vertical fixed connection, and the clamping section is installed in the clamping hole, the telescopic pull rod tortoise car of the utility model designs telescopic outer pull rod and telescopic inner pull rod, compared with traditional tortoise car not to involve pull rod or pull rod use length is too short, can be stored in the inside of car body when not needing using telescopic outer pull rod and telescopic inner pull rod, and when needing using telescopic outer pull rod and telescopic inner pull rod to transfer tortoise car, overturns, finally effectively completes the transfer work.

Description

Technical Field

[0001] This utility model belongs to the field of manufacturing and logistics warehousing technology, and relates to the transfer of parts baskets. Specifically, it designs a telescopic tortoise cart that can transfer multiple parts baskets. Background Technology

[0002] The tortoise cart is a commonly used unitized automated logistics (AAG) device in manufacturing and warehousing, responsible for transferring parts crates. As a standardized container tool, the parts crate is primarily responsible for the safe and secure transfer of parts and materials in industrial production, making it an indispensable auxiliary tool in modern manufacturing and logistics systems. However, traditional tortoise carts cannot effectively support the weight of the parts crates and lack effective restraint mechanisms. During transfer, the crates are prone to swaying, leading to collisions and damage to parts. Furthermore, the traditional tortoise cart's structural design does not meet human-machine interface requirements, resulting in low transfer efficiency. Therefore, designing a tortoise cart with good restraint, ease of operation, and the ability to withstand heavy loads is of great significance for the transfer of parts crates. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model proposes a telescopic tortoise cart capable of transporting various parts baskets, thereby solving the technical problem of low efficiency in transporting parts baskets using existing tortoise carts.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A telescopic tortoise-shaped cart capable of transporting various parts baskets includes a rectangular chassis with an open upper end and a handle. The handle includes two support handles, which are horizontally fixedly connected by a handle connecting rod. The lower ends of the two support handles are fixedly connected to the inner surface of the bottom wall of the chassis, so that the handle is vertically fixed to the inner surface of the bottom wall of the chassis.

[0006] It also includes a hollow, open-ended cylindrical telescopic pull rod. One end of the telescopic pull rod is connected to a ring-shaped round steel bar, which is rotatably fitted onto the handle connecting rod on the short side, allowing the telescopic pull rod to rotate. The other end of the telescopic pull rod is coaxially fixedly connected to a metal plate, and the metal plate has a snap-fit ​​hole in the center.

[0007] It also includes a cylindrical telescopic inner rod, which comprises a snap-fit ​​section and a push-pull section connected in sequence. One end of the snap-fit ​​section is vertically and fixedly connected to the middle of the push-pull section. The other end of the snap-fit ​​section is coaxially provided with a metal baffle. The outer diameter of the metal baffle is larger than the inner diameter of the snap-fit ​​hole, and the inner diameter of the snap-fit ​​hole is larger than the outer diameter of the snap-fit ​​section. The snap-fit ​​section is installed in the snap-fit ​​hole and is used to connect the telescopic outer rod and the telescopic inner rod.

[0008] This utility model also has the following technical features:

[0009] It also includes an L-shaped support frame, which includes a first L-shaped support frame side wall and a second L-shaped support frame side wall integrally formed. One end of the first L-shaped support frame side wall and one end of the second L-shaped support frame side wall are vertically fixedly connected. The other end of the first L-shaped support frame side wall is fixedly connected to the long side wall of the chassis, and the other end of the second L-shaped support frame side wall is fixedly connected to the short side wall of the chassis, forming a cuboid cavity with an open upper end.

[0010] The lower end of the other end of the side wall of the first L-shaped support frame is provided with a chamfer, and the lower end of the other end of the side wall of the second L-shaped support frame is also provided with a chamfer.

[0011] Cylindrical limiting pins are also fixedly installed at the four corners of the inner surface of the bottom wall of the chassis, and the cylindrical limiting pins are located inside the cuboid cavity.

[0012] The cylindrical limiting pin comprises, from top to bottom, a frustum-shaped limiting segment and a cylindrical welding segment connected in sequence, wherein the outer diameter of the upper end face of the limiting segment is smaller than the outer diameter of the upper end face of the welding segment.

[0013] It also includes a C-shaped height-increasing limit frame, which includes a bottom wall, a side wall, and a top wall connected in sequence.

[0014] The top wall of the C-shaped height-increasing limit frame is installed at the four corners of the outer surface of the bottom wall of the chassis, so that the chassis and the C-shaped height-increasing limit frame are fixedly connected.

[0015] It also includes a caster mechanism, which includes a housing that is movably mounted on the bottom wall of the C-shaped height-increasing limit frame. The housing is connected to the caster through a wheel axle, and the caster rotates inside the housing.

[0016] The L-shaped support frames are arranged symmetrically in pairs, and the cylindrical limiting pins are arranged symmetrically in pairs.

[0017] The C-shaped height-increasing limit frames are arranged symmetrically in pairs, and the caster wheel mechanisms are arranged symmetrically in pairs.

[0018] The handles are located on both sides of the short side of the chassis.

[0019] The aforementioned annular round steel and telescopic inner tie rod are solid.

[0020] The upper surface of the limiting section is higher than the upper surface of the chassis, and the upper surface of the L-shaped support frame is lower than the upper surface of the chassis.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] (I) The telescopic pull rod turtle cart for transporting various parts baskets proposed in this utility model has a telescopic outer pull rod and a telescopic inner pull rod. Compared with the traditional turtle carts that do not have a pull rod or whose pull rod is too short, this utility model can store the telescopic outer pull rod and the telescopic inner pull rod inside the cart body when they are not needed. When the telescopic outer pull rod and the telescopic inner pull rod are needed to transport the turtle cart, they can be flipped out to effectively complete the transport work.

[0023] (II) The telescopic tortoise cart proposed in this utility model, which can transport various parts baskets, adopts a calculated L-shaped support frame. The vehicle body size is slightly larger than the outer size of the parts basket, and it can carry a variety of the latest standardized parts baskets. Moreover, the lower end of the L-shaped support frame adopts a chamfered design, so there are no dead corners for oil accumulation, and the oil in the whole vehicle is easy to clean.

[0024] (III) The telescopic pull rod turtle cart that can transport various parts baskets proposed in this utility model improves the limiting effect by strictly controlling the dimensional tolerances so that the cylindrical limiting pin is aligned with the largest hole on the bottom surface of the parts basket.

[0025] (IV) The telescopic pull rod turtle cart proposed in this utility model can transport various parts baskets. A C-shaped height-increasing limit frame is connected to the back of the chassis. Considering the future application of the turtle cart in automated production lines, the designed C-shaped height-increasing limit frame can effectively reduce the gripping difficulty of the robotic arm, effectively distribute the load, and also play a role in accurately installing the casters.

[0026] (V) The telescopic tortoise cart with a pull rod that can transport various parts baskets proposed in this utility model is made of Q235 material. It has a strong load-bearing capacity and is not easily deformed. It has a low cost and is suitable for mass production and large-scale application as an industrial workstation tool. Except for the universal wheels, the surface is treated with electro-galvanizing, which is rust-proof and has a long service life. It has good processability and is easy to mass-produce. It is applicable to a wide range of scenarios. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a telescopic tortoise-shaped cart that can transport various parts baskets.

[0028] Figure 2 This is a schematic diagram of the telescopic external tie rod.

[0029] Figure 3 This is a schematic diagram of the cross-sectional structure of the metal plate end of the telescopic outer tie rod.

[0030] Figure 4 This is a schematic diagram of the telescopic inner tie rod.

[0031] Figure 5 This is a schematic diagram of the handle's structure.

[0032] Figure 6This is a schematic diagram of the cylindrical limiting pin.

[0033] Figure 7 This is a schematic diagram of the L-shaped support frame.

[0034] Figure 8 This is a schematic diagram of the C-shaped height-increasing limit frame.

[0035] Figure 9 This is a schematic diagram of the overall structure of the telescopic tortoise car when unloaded.

[0036] Figure 10 This is a schematic diagram of the overall structure of the tortoise-shaped vehicle with telescopic booms during loading.

[0037] The meanings of the labels in the diagram are as follows: 1-chassis, 2-handle, 3-telescopic outer rod, 4-telescopic inner rod, 5-L-shaped support frame, 6-cylindrical limit pin, 7-C-shaped height-increasing limit frame, 8-caster mechanism, 9-parts basket.

[0038] 201-Handle, 202-Handle connecting rod, 301-Ring-shaped round steel, 302-Metal sheet, 303-Snap-fit ​​hole, 401-Snap-fit ​​section, 402-Push-pull section, 403-Metal baffle, 501-Side wall of the first L-shaped support frame, 502-Side wall of the second L-shaped support frame, 503-Cuboid cavity, 504-Chamfer angle, 601-Limiting section, 602-Welding section, 701-Bottom wall of the C-shaped height-increasing limit frame, 702-Side wall of the C-shaped height-increasing limit frame, 703-Top wall of the C-shaped height-increasing limit frame, 801-Shell, 802-Wheel axle, 803-Universal wheel.

[0039] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, all equipment and components in this utility model are based on equipment and components known in the prior art.

[0041] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0042] Example:

[0043] This embodiment provides a telescopic tortoise-shaped cart capable of transporting various parts baskets, including a rectangular chassis 1 with an open top, such as... Figure 1 and Figure 5As shown, it also includes a handle 2, which includes two support handles 201. The two support handles 201 are horizontally fixedly connected by a handle connecting rod 202. The lower ends of the two support handles 201 are fixedly connected to the inner surface of the bottom wall of the chassis 1, so that the handle 2 is vertically fixed on the inner surface of the bottom wall of the chassis 1.

[0044] like Figures 1 to 3 As shown, it also includes a hollow, open-ended cylindrical telescopic pull rod 3. One end of the telescopic pull rod 3 is connected to an annular round steel 301. The annular round steel 301 is rotatably mounted on the handle connecting rod 202 on the short side, so that the telescopic pull rod 3 can rotate. The other end of the telescopic pull rod 3 is coaxially fixedly connected to a metal plate 302. The metal plate 302 has a snap-fit ​​hole 303 in the center.

[0045] like Figure 1 and Figure 4 As shown, it also includes a cylindrical telescopic inner rod 4. The telescopic inner rod 4 includes a snap-fit ​​section 401 and a push-pull section 402 connected in sequence. One end of the snap-fit ​​section 401 is vertically and fixedly connected to the middle of the push-pull section 402. The other end of the snap-fit ​​section 401 is coaxially provided with a metal baffle 403. The outer diameter of the metal baffle 403 is larger than the inner diameter of the snap-fit ​​hole 303. The inner diameter of the snap-fit ​​hole 303 is larger than the outer diameter of the snap-fit ​​section 401. The snap-fit ​​section 401 is installed in the snap-fit ​​hole 303 for connecting the telescopic outer rod 3 and the telescopic inner rod 4.

[0046] As a preferred embodiment of this invention, such as Figure 1 and Figure 7 As shown, it also includes an L-shaped support frame 5. The L-shaped support frame 5 includes a first L-shaped support frame side wall 501 and a second L-shaped support frame side wall 502 integrally formed. One end of the first L-shaped support frame side wall 501 and one end of the second L-shaped support frame side wall 502 are vertically fixedly connected. The other end of the first L-shaped support frame side wall 501 is fixedly connected to the long side wall of the chassis 1, and the other end of the second L-shaped support frame side wall 502 is fixedly connected to the short side wall of the chassis 1, forming a cuboid cavity 503 with an open upper end.

[0047] As a preferred embodiment of this invention, such as Figure 1 and Figure 7 As shown, the lower end of the other end of the side wall 501 of the first L-shaped support frame is provided with a chamfer 504, and the lower end of the other end of the side wall 502 of the second L-shaped support frame is also provided with a chamfer 504.

[0048] As a preferred embodiment of this invention, such as Figure 1 and Figure 6 As shown, cylindrical limiting pins 6 are fixedly installed at the four corners of the inner surface of the bottom wall of the chassis 1, and the cylindrical limiting pins 6 are located inside the cuboid cavity 503.

[0049] As a preferred embodiment of this invention, such as Figure 1 and Figure 6 As shown, the cylindrical limiting pin 6 includes, from top to bottom, a frustum-shaped limiting section 601 and a cylindrical welding section 602 connected in sequence. The outer diameter of the upper end face of the limiting section 601 is smaller than the outer diameter of the upper end face of the welding section 602.

[0050] As a preferred embodiment of this invention, such as Figure 1 and Figure 8 As shown, it also includes a C-shaped height-increasing limit frame 7, which includes a bottom wall 701, a side wall 702, and a top wall 703 connected in sequence.

[0051] As a preferred embodiment of this invention, such as Figure 1 As shown, the top wall 703 of the C-shaped height-increasing limit frame is installed at the four corners of the outer surface of the bottom wall of the chassis 1, so that the chassis 1 is fixedly connected to the C-shaped height-increasing limit frame 7.

[0052] As a preferred embodiment of this invention, such as Figure 1 As shown, it also includes a caster wheel mechanism 8, which includes a housing 801. The housing 801 is movably mounted on the bottom wall 701 of the C-shaped height-increasing limit frame. The housing 801 is connected to the caster wheel 803 through a wheel axle 802. The caster wheel 803 rotates inside the housing 801.

[0053] As a preferred embodiment of this invention, such as Figure 1 As shown, the L-shaped support frames 5 are symmetrically arranged in pairs, and the cylindrical limit pins 6 are symmetrically arranged in pairs.

[0054] As a preferred embodiment of this invention, such as Figure 1 As shown, the C-shaped height-increasing limit frames 7 are symmetrically arranged in pairs, and the universal wheel mechanisms 8 are symmetrically arranged in pairs.

[0055] As a preferred embodiment of this invention, such as Figure 1 As shown, handles 2 are located on both sides of the short side of the chassis 1.

[0056] As a preferred embodiment, the annular round steel 301 and the telescopic inner tie rod 4 are solid.

[0057] As a preferred embodiment of this invention, such as Figure 1 As shown, the upper surface of the limiting section 601 is higher than the upper surface of the chassis 1, and the upper surface of the L-shaped support frame 5 is lower than the upper surface of the chassis 1.

[0058] In this preferred embodiment, considering the potential for liquid accumulation when loading parts into the parts basket 9, a rectangular chassis 1 with an open top is used, which can serve as an oil collection tray.

[0059] In this preferred embodiment, the cylindrical limiting pin 6 is aligned with the weight-reducing hole at the bottom of the parts basket 9, allowing the parts basket 9 to be placed stably on the telescopic tortoise cart. During use, the parts basket 9 loaded on the telescopic tortoise cart experiences only a slight amount of swaying, which significantly improves both the safety of loading the parts basket 9 and reduces the interference of swaying on accuracy when the robotic arm grasps the parts basket 9.

[0060] In this preferred embodiment, the L-shaped support frame 5 is positioned according to the location of the chassis 1 and the C-shaped limiting and raising frame 7. This design maximizes the distribution of the weight of the loaded parts basket 9, reducing compressive stress and preventing the telescopic tortoise-shaped vehicle from easily denting or deforming. Simultaneously, the weight is evenly distributed, making the telescopic tortoise-shaped vehicle more flexible and easier to move. The chamfered angle 504 design of the L-shaped support frame 5 reduces the vehicle's weight and allows the oil in the cuboid cavity 503 to flow out naturally without residue.

[0061] In this embodiment, the preferred C-shaped height-increasing limit frame 7 is integrally formed by bending a steel plate. One side increases the contact area, making it easier to connect firmly to the chassis 1, while the other side is movably connected to the housing 801. This design not only improves manufacturability but also facilitates the installation of the casters 803.

[0062] In this preferred embodiment, the handle 2 is integrally formed by bending steel bars and connected to the chassis 1. By analyzing the placement of the parts basket 9 on the L-shaped support frame 5 and the cylindrical limiting pin 6, and considering that the handle 2 serves both as a gripping structure and a coarse positioning structure for the parts basket 9 on the telescopic tortoise-shaped cart, the height, bending radius, and connection position of the handle 2 are determined. In actual use, the handle 2 alone can achieve the limiting function of the parts basket 9 on the telescopic tortoise-shaped cart, and can fully perform the limiting function when moving on non-extremely uneven road surfaces. At the same time, the coarse positioning design of the handle 2 is more conducive to placing the parts basket 9 on the telescopic tortoise-shaped cart during on-site use, assisting in the fine positioning of the cylindrical limiting pin 6.

[0063] In this preferred embodiment, the telescopic outer pull rod 3 and the telescopic inner pull rod 4 adopt an internal storage structure based on the size limitation of the chassis 1 and the placement height of the parts basket 9 on the L-shaped support frame 5. The telescopic inner pull rod 4 is connected to the snap-fit ​​hole 303 at the end of the telescopic outer pull rod 3 through the metal baffle 403 at the end of the snap-fit ​​section 401, which can effectively complete the transfer work.

[0064] In this embodiment, the preferred embodiment is as follows: Figure 9 As shown, when the telescopic tortoise cart is being transported unloaded, the telescopic outer rod 3 and the telescopic inner rod 4 can be deployed from inside the cart. By pulling the telescopic inner rod 4, the operator can easily complete the unloaded telescopic tortoise cart transport.

[0065] In this embodiment, the preferred embodiment is as follows: Figure 10As shown, when the parts basket 9 is placed on the telescopic tortoise cart, the telescopic outer lever 3 and the telescopic inner lever 4 are retracted into the telescopic tortoise cart. The operator can manually push and pull the parts basket 9 on the telescopic tortoise cart to transfer it. At the same time, since the shaking of the parts basket 9 and the telescopic tortoise cart is minimal, and all four wheels of the telescopic tortoise cart are universal wheels 803, it is very easy to manually push and pull the parts basket 9 under these circumstances.

[0066] In this embodiment, the operation process of the telescopic lever tortoise cart is as follows: When loading the parts basket 9, the operator first places one side of the parts basket 9 onto the telescopic lever tortoise cart. The coarse positioning of the handle 2 will allow the auxiliary parts basket 9 to fall naturally to the center position of the telescopic lever tortoise cart. Then, by comparing the position of the weight reduction hole of the parts basket 9 with the cylindrical limit pin 6, the parts basket 9 can be easily placed in the correct position. The telescopic lever tortoise cart moves on the ground rail. After the robotic arm visually recognizes the parts basket 9, it grabs the handle of the parts basket 9, thus realizing automated production line production.

Claims

1. A telescopic tortoise-shaped cart capable of transporting various parts baskets, comprising a rectangular chassis (1) with an open upper end, characterized in that, It also includes a handle (2), which includes two support handles (201). The two support handles (201) are horizontally fixedly connected by a handle connecting rod (202). The lower ends of the two support handles (201) are fixedly connected to the inner surface of the bottom wall of the chassis (1), so that the handle (2) is vertically fixed on the inner surface of the bottom wall of the chassis (1). It also includes a hollow, open-ended cylindrical telescopic pull rod (3). One end of the telescopic pull rod (3) is connected to a ring-shaped round steel (301). The ring-shaped round steel (301) is rotatably mounted on the handle connecting rod (202) on the short side, so that the telescopic pull rod (3) can rotate. The other end of the telescopic pull rod (3) is coaxially fixedly connected to a metal plate (302). The metal plate (302) has a snap-fit ​​hole (303) in the center. It also includes a cylindrical telescopic inner rod (4), which includes a snap-fit ​​section (401) and a push-pull section (402) connected in sequence. One end of the snap-fit ​​section (401) is vertically fixed to the middle of the push-pull section (402), and the other end of the snap-fit ​​section (401) is coaxially provided with a metal baffle (403). The outer diameter of the metal baffle (403) is larger than the inner diameter of the snap-fit ​​hole (303), and the inner diameter of the snap-fit ​​hole (303) is larger than the outer diameter of the snap-fit ​​section (401). The snap-fit ​​section (401) is installed in the snap-fit ​​hole (303) for connecting the telescopic outer rod (3) and the telescopic inner rod (4).

2. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 1, characterized in that, It also includes an L-shaped support frame (5), which includes an integrally formed first L-shaped support frame side wall (501) and a second L-shaped support frame side wall (502). One end of the first L-shaped support frame side wall (501) and one end of the second L-shaped support frame side wall (502) are vertically fixedly connected. The other end of the first L-shaped support frame side wall (501) is fixedly connected to the long side wall of the chassis (1), and the other end of the second L-shaped support frame side wall (502) is fixedly connected to the short side wall of the chassis (1), forming a cuboid cavity (503) with an open upper end. The lower end of the other end of the side wall (501) of the first L-shaped support frame is provided with a chamfer (504), and the lower end of the other end of the side wall (502) of the second L-shaped support frame is also provided with a chamfer (504).

3. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 1 or 2, characterized in that, Cylindrical limiting pins (6) are fixedly installed at the four corners of the inner surface of the bottom wall of the chassis (1), and the cylindrical limiting pins (6) are located in the cuboid cavity (503); The cylindrical limiting pin (6) includes, from top to bottom, a frustum-shaped limiting section (601) and a cylindrical welding section (602) connected in sequence. The outer diameter of the upper end face of the limiting section (601) is smaller than the outer diameter of the upper end face of the welding section (602).

4. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 1, characterized in that, It also includes a C-shaped height-increasing limit frame (7), which includes a bottom wall (701), a side wall (702), and a top wall (703) of the C-shaped height-increasing limit frame connected in sequence. The top wall (703) of the C-shaped height-increasing limit frame is installed at the four corners of the outer surface of the bottom wall of the chassis (1), so that the chassis (1) is fixedly connected to the C-shaped height-increasing limit frame (7).

5. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 4, characterized in that, It also includes a caster mechanism (8), which includes a housing (801). The housing (801) is movably mounted on the bottom wall (701) of the C-shaped height-increasing limit frame. The housing (801) is connected to the caster (803) via a wheel axle (802). The caster (803) rotates inside the housing (801).

6. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 2 or 3, characterized in that, The L-shaped support frames (5) are arranged symmetrically in pairs, and the cylindrical limiting pins (6) are arranged symmetrically in pairs.

7. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 4 or 5, characterized in that, The C-shaped height-increasing limit frame (7) is symmetrically arranged in pairs, and the universal wheel mechanism (8) is symmetrically arranged in pairs.

8. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 1, characterized in that, The handles (2) are located on both sides of the short side of the chassis (1).

9. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 1, characterized in that, The annular round steel (301) and the telescopic inner tie rod (4) are solid.

10. The telescopic tortoise cart capable of transporting multiple parts baskets as described in claim 1, characterized in that, The upper surface of the limiting segment (601) is higher than the upper surface of the chassis (1), and the upper surface of the L-shaped support frame (5) is lower than the upper surface of the chassis (1).

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