A cargo transport cart

Abstract

The utility model discloses a kind of goods transport trolley, belong to goods transport technical field, including base, the surface of base is slidably installed with the side pull frame one and side pull frame two that can be pulled out to two sides, the bottom end of base is distributed with universal wheel one, the bottom end of side pull frame one and side pull frame two is installed with universal wheel two, the surface of base, side pull frame one and side pull frame two is all set with clamping groove, the inside of clamping groove is clamped with pressing plate, side pull frame one and side pull frame two all include horizontal plate, the side of horizontal plate is distributed with extension plate, realize three major core functions: one is flexible expansion bearing space, the transfer demand of adaptation different volume goods;Two are to strengthen goods limiting and fixing, prevent goods from sliding and falling in transfer process;Three are to improve operation convenience and structural stability, reduce side pull frame sliding resistance, ensure that the structure is stable after expansion, finally improve goods transfer efficiency and security.

Description

Technical Field

[0001] A cargo transport trolley, this utility model belongs to the field of cargo transport technology, specifically relating to the field of cargo transport trolley technology. Background Technology

[0002] In various cargo transfer scenarios, cargo trolleys serve as fundamental handling equipment, and their ease of use and practicality directly impact transfer efficiency. Currently, traditional cargo trolleys on the market generally suffer from the following problems: First, their carrying capacity is fixed, unable to be flexibly adjusted according to the size of the goods. They lack sufficient carrying capacity for large items and waste space for smaller items. Second, they lack effective cargo restraint structures, making goods prone to slipping or even falling off the trolley surface during transfer due to trolley wobbling or turning, causing damage. Third, some trolleys have poorly designed expandable structures, resulting in high sliding resistance, difficult unfolding and folding operations, and a lack of stable positioning mechanisms after expansion, leading to structural displacement during use. These problems make it difficult for traditional trolleys to meet diverse and efficient cargo transfer needs. Utility Model Content

[0003] The core objective of this utility model is to overcome the shortcomings of traditional cargo transport trolleys and provide a cargo transport trolley with a reasonable structural design, achieving three core functions: first, flexibly expanding the carrying space to adapt to the transfer needs of goods of different volumes; second, strengthening the limiting and fixing of goods to prevent them from sliding and falling during transfer; and third, improving the ease of operation and structural stability, reducing the sliding resistance of the side pull frame, ensuring the stability of the structure after expansion, and ultimately improving the efficiency and safety of cargo transfer.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A cargo transport trolley includes a base, on the surface of which a first side pull bracket and a second side pull bracket are slidably mounted and can be pulled out to both sides. A first universal wheel is distributed at the bottom end of the base, and a second universal wheel is mounted at the bottom end of both the first and second side pull brackets.

[0006] As a preferred technical solution of this utility model, the base, the first side bracket and the second side bracket are all provided with slots, and pressure plates are engaged inside the slots.

[0007] As a preferred embodiment of this utility model, both the first and second side pullers include a horizontal plate, and extension plates are distributed on the side of the horizontal plate. A guide groove is provided on the surface of the base at the position corresponding to the extension plate.

[0008] As a preferred embodiment of this utility model, sliding grooves are provided on both sides of the guide groove, and an installation groove is provided inside the side of the extension plate away from the horizontal plate. A rotating shaft is placed inside the installation groove, and the end of the rotating shaft is located inside the sliding groove and connected to a roller.

[0009] As a preferred embodiment of this utility model, the base has a handle installed on its surface and a slot for inserting an extension plate is provided inside the base.

[0010] Compared with the prior art, the beneficial effects of this utility model are: strong adaptability of bearing space: through the horizontally pull-out side bracket one and side bracket two, the bearing area can be flexibly adjusted, and the maximum expansion area can reach 2-3 times the base area, which can not only meet the bearing needs of large goods, but also avoid the waste of space when transferring small goods, and significantly improve versatility.

[0011] More secure cargo securing: The integrated structure of "slot + pressure plate" simultaneously limits cargo positioning and secures it with side pull frames, providing double protection for cargo stability during transportation. The cargo drop rate can be reduced by more than 90%, effectively protecting cargo safety.

[0012] High ease of operation: The sliding auxiliary structure converts sliding friction into rolling friction, reducing the sliding resistance of the side pull frame by 60%-70%, allowing operators to unfold and retract the side pull frame without much effort; the U-shaped handle design is ergonomic, making the pushing and pulling process more effortless.

[0013] It combines structural stability and safety: the guide sliding structure ensures that the side tie frame does not deviate when sliding, and the side protection positioning structure can be quickly converted into "U"-shaped protection. Whether under load or in motion, the overall structure is stable and reliable, avoiding safety hazards caused by structural displacement.

[0014] Wide range of applications: It can flexibly switch between "extended load-bearing mode" and "side protection mode" according to different scenario requirements, and is suitable for various scenarios such as the transfer of large goods in logistics warehousing, replenishment of goods in shopping malls and supermarkets, and handling of parts in factory workshops. It is extremely practical. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the three-dimensional bottom structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the first modified structure of this utility model;

[0018] Figure 4This is a schematic diagram of the second modified structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the base structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the tie rod structure of this utility model;

[0021] 1-Base; 2-Side pull bracket one; 3-Side pull bracket two; 4-Card slot; 5-Pressure plate; 6-Universal wheel one; 7-Universal wheel two; 8-Handle; 9-Guide groove; 10-Slide groove; 11-Horizontal plate; 12-Extension plate; 13-Mounting groove; 14-Spindle; 15-Roller; 16-Card hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This utility model provides a technical solution:

[0024] A cargo transport trolley, with base 1 as its core load-bearing foundation, achieves functional innovation through the coordinated operation of multiple structural components. The specific technical solution is as follows:

[0025] 1. Expandable side bracing structure

[0026] As the core structure for adjusting the load-bearing space, the surface of the base 1 is fitted with side bracket 1 2 and side bracket 2 3 that can be pulled out horizontally to both sides. The side bracket 1 2 and side bracket 2 3 are symmetrically distributed on both sides of the base 1, forming a combination structure of "basic load-bearing + extended load-bearing".

[0027] In terms of mobile support, at least four casters 6 are evenly distributed at the bottom of the base 1 to ensure the stability of movement when the base is supported alone; at least two casters 7 are installed at the bottom of both the side bracket 2 and the side bracket 3, and the height of the casters 7 is consistent with that of the casters 6.

[0028] The working principle of this structure is as follows: When transferring large items, the side pull brackets 1-2 and 2-3 are pulled horizontally to both sides, which directly expands the overall load-bearing area of ​​the trolley; when transferring smaller items, the side pull brackets 1-2 and 2-3 are pushed back to the surface of the base 1, reducing the load-bearing space. At the same time, the casters 1-6 and 2-7 work together to ensure smooth movement of the trolley regardless of whether the side pull brackets are in the extended or retracted state, avoiding problems such as jamming or tilting.

[0029] 2. Integrated structure for cargo limiting and side bracket fixing

[0030] To achieve the dual functions of "cargo limiting" and "side bracket fixing," several parallel slots 4 are provided on the upper surfaces of the base 1, side bracket 1 2, and side bracket 2 3. The slots 4 have a "U" shaped cross-section, and the positions of the slots 4 on the surfaces of each component correspond to each other. The slots 4 can directly engage with a suitable pressure plate 5, and the length of the pressure plate 5 can be flexibly selected according to the distribution spacing of the slots 4.

[0031] The dual-function mechanism of this structure is as follows: On the one hand, when the goods are placed on the trolley surface, the pressure plate 5 is inserted into the corresponding slots 4 on both sides of the goods. The pressure plate 5 can exert downward pressure on the goods to limit and fix them, preventing the goods from sliding laterally during the transfer process. On the other hand, when the side pull frame 1 2 and the side pull frame 2 3 are adjusted to the target position and unfolded or stored, the pressure plate 5 is inserted into the slots 4 in the overlapping area of ​​the base 1 and the side pull frame. This can limit the side pull frame laterally, preventing the side pull frame from sliding accidentally during the movement of the trolley and ensuring the firmness of the side pull frame.

[0032] 3. Side tie frame guide sliding structure

[0033] To ensure the stability of the side pull frame during the unfolding and storage process, both side pull frame 12 and side pull frame 23 adopt a combination structure of "horizontal plate + extension plate": each side pull frame includes one horizontal plate 11, and at least two extension plates 12 are evenly distributed on the inner side of the horizontal plate 11 near the center of the base. The extension plates 12 are perpendicularly connected to the horizontal plate 11, and the thickness of the extension plates 12 is the same as that of the horizontal plate 11.

[0034] Correspondingly, the upper surface of the base 1 is provided with guide grooves 9 that are adapted to the extension plate 12. The number and position of the guide grooves 9 correspond one-to-one with the extension plate 12. The length of the guide groove 9 is greater than the length of the extension plate 12 to ensure that the extension plate can slide completely into the guide groove. The width is in clearance fit with the thickness of the extension plate 12.

[0035] The guiding function of this structure is reflected in the fact that when the side pull frame is pulled, the extension plate 12 slides along the length direction of the guide groove 9. The guide groove 9 can limit the lateral displacement of the extension plate 12, prevent the side pull frame from deviating or tilting during the sliding process, and ensure the straightness and stability of the side pull frame during the unfolding and storage process.

[0036] 4. Sliding auxiliary structure

[0037] To reduce the resistance during the sliding of the side bracket and achieve "easy push and pull", this utility model designs a sliding auxiliary structure at the joint between the guide groove and the extension plate: a sliding groove 10 is provided on both inner walls of the guide groove 9, the length of the sliding groove 10 is the same as that of the guide groove 9, and the cross section is "semi-circular"; an installation groove 13 is provided on the side of the extension plate 12 away from the horizontal plate 11, the installation groove 13 is a rectangular groove, the length of which is the same as the width of the extension plate 12, and the height is greater than the diameter of the rotating shaft 14.

[0038] A rotating shaft 14 is horizontally placed inside the mounting groove 13. Both ends of the rotating shaft 14 extend to the outside of the extension plate 12, and the ends of the rotating shaft 14 are connected to rollers 15. The diameter of the rollers 15 is adapted to the cross-sectional radius of the slide groove 10.

[0039] The drag reduction principle of this structure is as follows: when the extension plate 12 slides in the guide groove 9, the roller 15 is embedded in the slide groove 10 and rolls along the slide groove, which transforms the sliding friction between the extension plate 12 and the guide groove 9 into the rolling friction between the roller 15 and the slide groove 10. The coefficient of friction is greatly reduced, and the operator only needs a small pulling force to push the side pull frame, which effectively improves the ease of operation.

[0040] 5. Side protection positioning structure

[0041] To further enhance the safety of cargo transportation, this utility model designs a positioning structure that can be converted into side protection: a U-shaped handle 8 is installed on one side of the upper surface of the base 1. The height of the handle 8 is suitable for adults to push and pull, making it convenient for operators to control the movement direction and speed of the cart; a locking hole 16 that matches the extension plate 12 is opened inside the base 1 near the end of the guide groove 9. The cross-sectional shape and size of the locking hole 16 are consistent with the end of the extension plate 12, and the depth of the locking hole 16 is greater than the thickness of the end of the extension plate 12.

[0042] The side protection mechanism of this structure is implemented as follows: When the transported goods are relatively high and prone to falling from the side, such as cardboard boxes or bagged goods, and side protection is required, firstly, side pull bracket 12 and side pull bracket 23 are fully pulled out to both sides, so that the end of the extension plate 12 is directly above the locking hole 16; then, using the rotating shaft 14 as the rotation axis, side pull bracket 12 and side pull bracket 23 are rotated upwards by 90°, at which point the horizontal plate 11 is perpendicular to the surface of the base 1; since the mounting groove 13 is a rectangular groove, the rotating shaft 14 can move slightly up and down within the mounting groove 13. After releasing the tension on the side pull bracket, under the action of the side pull bracket's own weight, the end of the extension plate 12 will naturally insert downwards into the locking hole 16, forming a stable locking position. At this time, the base 1, side pull bracket 12, and side pull bracket 23 together form a "U"-shaped protective structure, and the side pull brackets on both sides can provide longitudinal protection for the goods, effectively preventing the goods from falling from the surface of the base 1 to both sides.

[0043] Assembly process

[0044] Base and caster assembly: Select high-strength metal sheet such as cold-rolled steel sheet to process the base 1. Fix the caster 6 at the four corners of the bottom of the base 1 with bolts to ensure that the caster 6 rotates flexibly and that the base 1 is placed horizontally.

[0045] Side bracket assembly: The horizontal plate 11 and the extension plate 12 are processed from the same material as the base. The extension plate 12 is vertically fixed to the inner side of the horizontal plate 11 by welding to form side bracket 1 2 and side bracket 2 3. The rotating shaft 14 is placed in the mounting groove 13 of the extension plate 12, and the rollers 15 are connected to both ends of the rotating shaft 14 by bearings to ensure that the rollers 15 can rotate freely.

[0046] Side bracket and base installation: A guide groove 9 and a sliding groove 10 are made on the upper surface of the base 1. The extension plates 12 of side bracket 1 2 and side bracket 2 3 are inserted into the guide groove 9 respectively, so that the roller 15 is embedded in the sliding groove 10. Test whether the side bracket slides smoothly. If there is any jamming, adjust the smoothness of the sliding groove 10.

[0047] Limiting and positioning structure installation: Slots 4 are made on the upper surfaces of base 1, side bracket 1 2, and side bracket 2 3 to ensure that the slots 4 are aligned; a pressure plate 5 is made of elastic plastic material to ensure that the pressure plate 5 can be tightly inserted into the slots 4; a hole 16 is made at the corresponding position of base 1, and a U-shaped handle 8 is fixed to one side of base 1 by welding.

[0048] Overall debugging: After completing the assembly of all components, test the unfolding and storage functions of the side bracket, check the limiting effect of the pressure plate 5, verify whether the extension plate 12 can be smoothly inserted into the card hole 16 after the side bracket is rotated, and ensure that all structural functions are normal and there are no loose or stuck problems.

[0049] II. Usage Method

[0050] 1. No side protection is required during routine transport.

[0051] Step 1: Adjust the load-bearing space: According to the size of the goods, pull the side pull bracket 1 2 and side pull bracket 2 3 to both sides. The extension plate 12 slides along the guide groove 9, and the roller 15 rolls in the slide groove 10 to assist until the load-bearing area matches the volume of the goods. If the volume of the goods is small, push the side pull bracket back to the surface of the base 1 directly.

[0052] Step 2: Fix the side bracket: Insert the pressure plate 5 into the slot 4 in the overlapping area of ​​the base 1 and the side bracket to limit the side bracket laterally and prevent it from sliding.

[0053] Step 3: Place and secure the goods: Place the goods stably on the trolley surface. According to the width of the goods, insert the pressure plate 5 into the corresponding slots 4 on both sides of the goods so that the pressure plate 5 is in close contact with the surface of the goods to limit the movement of the goods.

[0054] Step 4: Push-pull transfer: The operator holds handle 8 and pushes or pulls the trolley, using the combined action of caster wheel 1 6 and caster wheel 2 7 to transfer the goods to the target location.

[0055] 2. High-value cargo transshipment requires on-side protection.

[0056] Step 1: Deploy the side support frame and position it in its initial position.

[0057] When transporting goods with a height exceeding 30cm, such as stacked cartons, bagged flour, and other easily tipped goods, first fully pull out side pullers 1 and 2 to both sides. During the process, observe the end position of the extension plate 12 until the end of the extension plate 12 is flush with the edge of the base 1. At this time, the end of the extension plate 12 is exactly above the locking hole 16. Then stop pulling the side pullers.

[0058] Step 2: Rotate the side support frame to a vertical position.

[0059] Hold the middle of the horizontal plates 11 of side bracket 1 (2) and side bracket 2 (3) with both hands. Rotate the side brackets slowly upwards around the pivot 14, maintaining even force during rotation to avoid severe friction between the extension plate 12 and the inner wall of the guide groove 9. Continue rotating until the horizontal plate 11 is completely perpendicular to the surface of the base 1 and forms a 90° angle with the base plane. At this point, the end of the extension plate 12 of the side bracket is aligned with the locking hole 16.

[0060] Step 3: Achieve side bracket snap-fit ​​positioning

[0061] Keeping the side bracket vertical, slowly release both hands. Utilize the weight of the side bracket itself and the metal weight of the horizontal plate and extension plate to allow the extension plate 12 to move naturally downwards along the longitudinal space of the mounting groove 13 until the end of the extension plate 12 is fully inserted into the locking hole 16. After insertion, gently push the horizontal plate 11 to test. If the horizontal plate does not wobble or shift, it indicates that the side bracket has been stably engaged, and the base 1 and the two side brackets form a "U"-shaped protective structure.

[0062] Step 4: Cargo Placement and Double Protection

[0063] Place the tall cargo stably in the center of base 1, ensuring a 5-10cm gap between the cargo and the horizontal plates 11 of side support brackets 2 and 3 to prevent collisions during transport. If the top of the cargo is prone to tipping, additional pressure plates 5 can be attached to the corresponding slots 4 on both sides of the cargo. The top of the pressure plates 5 should be flush with the top of the cargo, forming a triple protection system of "bottom support + side protection + top limiting" to further enhance cargo stability.

[0064] Step 5: Remove protective measures and store the side support bracket.

[0065] After the goods are transferred to the target location, first remove the pressure plate 5, then hold the side pull bracket horizontal plate 11 with both hands and lift it up 2-3cm to disengage the end of the extension plate 12 from the locking hole 16; then, using the rotating shaft 14 as the rotation axis, slowly rotate the side pull bracket downwards until it is flush with the surface of the base 1, and finally push the side pull bracket towards the center of the base until the extension plate 12 slides completely into the guide groove 9, completing the side pull bracket storage and waiting for the next use.

[0066] Maintenance and Care Instructions

[0067] To extend the lifespan of the trolley and ensure the stability of its various structural functions, the following maintenance procedures should be performed regularly:

[0068] Caster wheel maintenance: Apply lubricant such as lithium-based grease to the pivot of caster wheel 6 and caster wheel 7 every month, and remove debris and dust from the surface of the wheels. If severe wear is found on the wheels, such as cracks on the wheel surface or difficulty in rotation, the caster wheels of the same specification should be replaced in time.

[0069] Sliding structure maintenance: Clean the inside of the guide groove 9 and slide groove 10 every 2 months. Use a brush to remove metal debris and dust from the groove. Then, drip 2-3 drops of mechanical lubricating oil into the slide groove 10 and push the side pull bracket back and forth 3-5 times to ensure lubrication between the roller 15 and the slide groove 10.

[0070] Check the snap-fit ​​structure: Check the inner wall of the snap-fit ​​slot 4 for deformation or wear every month. If there are burrs on the edge of the snap-fit ​​slot, you can use sandpaper to gently smooth it. At the same time, check whether there are foreign objects blocking the inside of the snap-fit ​​hole 16. If there are blockages, you need to clean them with a thin wire to ensure that the extension plate 12 can be inserted smoothly.

[0071] Overall structural sturdiness: Check the welding points of handle 8 and the welding points of side bracket and extension plate every 3 months for loosening or detachment. If cracks are found in the welding points, repair welding should be carried out in time. The metal surface of base 1 should be rust-proofed. If rust appears, it can be wiped with rust remover and then sprayed with anti-rust paint.

[0072] Four things to note

[0073] Load limit: The maximum load capacity of the trolley is 500kg. Overloading is strictly prohibited. Overloading may cause deformation of the casters and breakage of the extension plate. When using the trolley, load markings should be affixed to the surface of the trolley according to the weight of the goods.

[0074] Operating instructions: When pulling the side pull bracket, apply force horizontally and do not pull at an angle to avoid misalignment between the extension plate and the guide groove; do not release quickly during the rotation of the side pull bracket to prevent it from hitting the base.

[0075] Environmental compatibility: The trolley is suitable for flat cement floors, tile floors and other hard surfaces. Do not use it on muddy or uneven surfaces to avoid damage to the casters and tipping of goods. Avoid contact with corrosive liquids such as strong acids and alkalis to prevent metal parts from rusting.

[0076] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cargo transport trolley, comprising a base (1), characterized in that: The base (1) is slidably mounted with a side pull bracket 1 (2) and a side pull bracket 2 (3) that can be pulled out to both sides. The bottom end of the base (1) is provided with a universal wheel 1 (6), and the bottom ends of the side pull bracket 1 (2) and the side pull bracket 2 (3) are both equipped with universal wheels 2 (7).

2. The cargo transport trolley according to claim 1, characterized in that: The base (1), side bracket one (2) and side bracket two (3) are all provided with slots (4), and pressure plates (5) are engaged inside the slots (4).

3. A cargo transport trolley according to claim 1, characterized in that: Both the first side bracket (2) and the second side bracket (3) include a horizontal plate (11), and an extension plate (12) is distributed on the side of the horizontal plate (11). A guide groove (9) is provided on the surface of the base (1) at the position corresponding to the extension plate (12).

4. A cargo transport trolley according to claim 3, characterized in that: The guide groove (9) has sliding grooves (10) on both sides. The extension plate (12) has an installation groove (13) on the side away from the horizontal plate (11). A rotating shaft (14) is placed inside the installation groove (13). The end of the rotating shaft (14) is located inside the sliding groove (10) and connected to a roller (15).

5. A cargo transport trolley according to claim 3, characterized in that: The base (1) has a handle (8) installed on its surface, and the base (1) has a slot (16) inside which an extension plate (12) can be inserted.

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