Folding type side plate trolley

Abstract

The invention discloses a folding type side plate trolley which comprises a bottom plate, side baffles and extension assemblies, guardrails are connected to the two ends of the top of the bottom plate, a plurality of sets of side baffles are arranged and hinged to the two sides of the top of the bottom plate respectively, every two adjacent sets of side baffles are locked through locking pieces, and the stability of enclosure of the side baffles is guaranteed; the extending assembly is arranged at the bottom of the bottom plate and comprises an expanding plate and two sets of stroke electric cylinders, the two sets of stroke electric cylinders are installed on the two sides of the bottom of the bottom plate through installation frames correspondingly, and folding storage of the trolley is achieved through the hinge design of the side baffles and the guardrails and the cooperation of the structure that the extending assembly can be retracted to the bottom of the bottom plate. By additionally arranging the extending assembly, the cargo carrying space can be expanded according to needs, and when the quantity of transferred cargoes is large, the extending plate can be driven by the stroke electric cylinder to stretch out, and the overall bearing area is expanded; and when the quantity of goods is small, the original use state of the trolley is not affected after the expansion plate is retracted, and the single-time transfer efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of trolleys, and particularly relates to a folding side plate trolley. BACKGROUND

[0002] In the fields of warehouse logistics, production workshops, supermarket distribution, etc., trolleys, as a kind of convenient goods transfer equipment, are widely used to realize short-distance goods transfer and turnover. The convenience of use, space utilization rate and loading adaptability of the trolleys directly affect the transfer efficiency and operating cost. The folding side plate trolley, with the advantages of small size after folding and convenient storage, effectively solves the problem of large space occupation of the traditional fixed structure trolley when idle, and becomes one of the current mainstream transfer equipment.

[0003] The core bearing structure of the existing folding side plate trolley is a fixed size bottom plate, which is matched with foldable side plates, handles and running wheels. The cargo carrying capacity is strictly limited by the bearing area of the bottom plate and the accommodating space formed by the side plates. In actual transfer scenarios, there are often transfer requirements of small volume, large quantity or medium size goods. Due to the limited cargo carrying space of the existing folding side plate trolley, the single transfer quantity is small, and multiple round trips are required, which significantly reduces the transfer efficiency. If a larger size folding trolley is selected to increase the cargo carrying capacity, not only the equipment procurement cost will increase, but also the large size trolley will still occupy a lot of storage space even after folding, which is contrary to the core design intention of the folding trolley to save storage space, and cannot meet the use requirements of space-limited scenarios such as small and medium-sized warehouses and narrow channel workshops. SUMMARY

[0004] The present application aims to provide a folding side plate trolley to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a folding side plate trolley, comprising: a bottom plate, the top of the bottom plate is connected with a guardrail at both ends; a side baffle, the side baffle is provided with a plurality of groups, and the plurality of groups of side baffles are respectively hinged to the top of the bottom plate on both sides to realize folding and storage. The adjacent two groups of side baffles are locked by a locking piece to ensure the stability of the side baffle enclosure. an extension assembly, the extension assembly is arranged at the bottom of the bottom plate to expand the loadable cargo carrying capacity of the trolley. The extension assembly comprises an extension plate and a stroke electric cylinder. The stroke electric cylinder is provided with two groups, and the two groups of stroke electric cylinders are respectively installed on both sides of the bottom plate through mounting brackets. The stroke electric cylinder drives the extension plate to extend from the bottom of the bottom plate, so that the extended extension plate enhances the cargo carrying capacity of the bottom plate.

[0006] Preferably, a movable arm is slidably connected within the mounting frame via a slider, the piston rod of the stroke cylinder is hinged to one end of the movable arm, and a fixed seat is connected to one end of the mounting frame, with a gear rotatably connected within the fixed seat via a rotating shaft. This provides guidance and a transmission basis for the smooth extension and retraction of the extension assembly, ensuring the stability of the extension plate's movement.

[0007] Preferably, the bottom of the movable arm is connected to a toothed plate that meshes with a gear, and one end of the mounting frame is connected to a connecting plate via a connecting rod. Through the meshing of the gear and toothed plate, the power is precisely transmitted, ensuring that the movable arm and the extension plate move synchronously.

[0008] Preferably, one end of the extension plate is connected to the connecting plate, and the connecting plate and the bottom of the extension plate are rotatably connected by a pulley frame to achieve a stable connection between the extension plate and the transmission structure. At the same time, the pulley reduces the movement resistance of the extension plate and provides auxiliary support.

[0009] Preferably, the guardrail is connected to hinge seats at both ends, and one end of the side baffle is hinged to the hinge seats by a pin. The side baffle is provided with a grid plate arranged in a crisscross pattern by several horizontal and vertical bars to enhance the strength of the side baffle, reduce the weight, and facilitate the observation of goods.

[0010] Preferably, the locking component includes a mounting base, which is connected to one of the side baffles and has an operating handle rotatably connected to it via a pin. The operating handle has a threaded groove and a clamping arm is threadedly connected to it, forming the core structure of the locking component and providing an operable actuator for locking adjacent side baffles.

[0011] Preferably, another set of side panels is connected to a hook. By operating the handle, the clamping arm is controlled to hook the hook, thereby locking the two adjacent sets of side panels. Through the cooperation of the clamping arm and the hook, the adjacent side panels are securely locked, ensuring the integrity of the enclosure structure.

[0012] Preferably, the bottom of the base plate is rotatably connected to several casters, which reduce the resistance of the trolley movement, enable flexible steering, and improve the convenience of cargo transfer.

[0013] Preferably, one set of guardrails is connected to a push handle, which provides the operator with a convenient force application component, and together with the casters, enables precise movement and steering control of the trolley.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) The present application realizes the folding and storage of the trolley through the hinge design of the side baffle and the guardrail, and the structure of the extension assembly that can be retracted to the bottom of the bottom plate. When idle, the side baffle can be folded inward to fit the guardrail or the two sides of the bottom plate, and the expansion plate can be completely retracted to the bottom of the bottom plate, greatly reducing the overall volume of the trolley, facilitating the storage of multiple trolleys, effectively saving storage space, and meeting the storage needs of limited space scenes such as small and medium-sized storage and narrow channel workshops, and meeting the core design intention of saving space of the folding trolley.

[0015] (2) By adding the extension assembly, the cargo space can be expanded as needed. When the amount of goods to be transported is large, the expansion plate can be driven out by the stroke electric cylinder to expand the overall carrying area. When the amount of goods is small, the retraction of the expansion plate does not affect the original use state of the trolley, and there is no need to replace different size trolleys. It can meet the transportation needs of small size, large quantity or medium size goods, avoid the problems of increased procurement cost and inconvenient storage caused by the selection of large size trolley, and improve the efficiency of single transportation.

[0016] (3) The side baffles are stably locked by the locking piece, and the adjacent side baffles form a stable circumferential enclosing structure by pulling the operating handle to control the cooperation of the clamping arm and the hook. The movable arm and the sliding block of the mounting bracket in the extension assembly are in sliding cooperation, and the meshing transmission of the toothed plate and the gear makes the extension plate extend and retract smoothly, avoiding jamming or deviation. The pulley at the bottom of the expansion plate not only reduces the frictional resistance of the ground during movement, but also provides auxiliary support for the expansion plate, enhances the structural stability when carrying goods, and further ensures the safety of transportation.

[0017] (4) The grid plate structure intersecting longitudinally and transversely in the side baffle not only ensures the enclosing strength, but also reduces the overall weight of the side baffle, and facilitates the observation of the internal cargo state. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural diagram of the present application; Figure 2 is a bottom view of the present application; Figure 3 is a structural diagram of the side baffle folding of the present application; Figure 4 is a structural diagram of the stroke electric cylinder, mounting bracket and movable arm of the present application; Figure 5 is a bottom view of the stroke electric cylinder, mounting bracket and movable arm of the present application; Figure 6 is a front view of the stroke electric cylinder, mounting bracket and movable arm of the present application; Figure 7 is a structural diagram of the locking piece of the present application.

[0019] In the figure: 1, bottom plate; 2, guardrail; 3, side baffle; 4, locking piece; 5, expansion plate; 6, stroke electric cylinder; 7, mounting bracket; 8, moving arm; 9, fixed seat; 10, gear; 11, toothed plate; 12, connecting rod; 13, connecting plate; 14, pulley bracket; 15, pulley; 16, hinge seat; 17, cross bar; 18, vertical bar; 19, grid plate; 20, mounting base; 21, operating handle; 22, clamping arm; 23, hook; 24, universal wheel; 25, push handle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved", "sleeved", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0022] The present application provides a folding side plate trolley as shown in Figures 1-7 The present application provides a folding side plate trolley as shown in The bottom plate 1 is used as the core bearing base of the trolley and is used for supporting various goods to be transported; the top of the bottom plate 1 is fixedly connected with the guardrail 2 at both ends, and the guardrail 2 has the functions of preventing the goods from falling off and supporting the installation of the side baffle; The side baffle 3 is provided with a plurality of groups and is symmetrically hinged to the top of the bottom plate 1 at both sides in the length direction of the bottom plate 1, and the folding storage and the unfolded surrounding of the side baffle 3 are realized through the hinge structure, which is suitable for the two core scenes of idle storage and goods transportation; the adjacent two groups of side baffles 3 are detachably locked through the locking piece 4, and the unfolded side baffles 3 form a stable circumferential surrounding structure through the locking effect of the locking piece 4, so as to prevent the risk of side turning or sliding of the goods during the transportation of the trolley; The extension assembly can be accommodated at the bottom of the bottom plate 1, and the core function is to expand the loadable loading area of the trolley as needed, thereby improving the single transfer capacity; the extension assembly comprises an expansion plate 5 and a stroke electric cylinder 6, the stroke electric cylinder 6 is provided in two groups and is symmetrically distributed, and the two groups of stroke electric cylinders 6 are respectively fixedly installed on both sides of the bottom of the bottom plate 1 through mounting racks 7 to provide stable driving force; the expansion plate 5 is driven to extend or retract from the bottom of the bottom plate 1 in the horizontal direction through the extension and retraction action of the stroke electric cylinder 6, when the expansion plate 5 extends, a continuous bearing surface is formed with the bottom plate 1 to enhance the load capacity of the bottom plate 1, meet the transfer requirements of a large number or large size of goods, and when it is retracted, it is completely fitted to the bottom of the bottom plate 1 without occupying additional space.

[0023] The inside of the mounting rack 7 is provided with a sliding guide structure, and the sliding guide structure is slidably connected with the moving arm 8 to realize the stable linear movement of the moving arm 8; the end of the piston rod of the stroke electric cylinder 6 is hinged to one end of the moving arm 8, so that the extension and retraction power of the stroke electric cylinder 6 can be flexibly transmitted to the moving arm 8; the end of the mounting rack 7 away from the stroke electric cylinder 6 is fixedly connected with a fixed seat 9, the fixed seat 9 is rotatably connected with a gear 10 through a rotating shaft, and the gear 10 is used to cooperate to realize the precise transmission of the moving arm 8, and ensure the stability and synchronization of the moving process of the expansion plate 5.

[0024] The bottom of the moving arm 8 is integrally formed with a gear plate 11 engaged with the gear 10 along the length direction, the linear motion of the moving arm 8 is converted into the rotary motion of the gear 10 through the meshing transmission of the gear plate 11 and the gear 10, and the transmission characteristics of the gear meshing are used to ensure the accuracy of the movement of the moving arm 8, avoiding deviation and jamming; one end of the mounting rack 7 is fixedly connected with a connecting plate 13 through a connecting rod 12, the connecting rod 12 and the connecting plate 13 jointly constitute an intermediate carrier for power transmission and expansion plate connection, and realize the power conduction between the moving arm 8 and the expansion plate 5.

[0025] One end of the expansion plate 5 is fixedly connected with the connecting plate 13, and the connecting plate 13 receives the transmission power from the connecting rod 12 to drive the expansion plate 5 to complete the extension or retraction action synchronously; the connecting plate 13 and the edge position at the bottom of the expansion plate 5 are rotatably connected with a pulley 15 through a pulley frame 14, the pulley 15 realizes the 360-degree steering function through the pulley frame 14, the pulley 15 has dual functions, one is to roll in contact with the ground during the movement of the expansion plate 5, to reduce the frictional resistance between the expansion plate 5 and the ground, to ensure smooth movement, and the other is to provide auxiliary support for the end of the expansion plate 5 away from the bottom plate 1 when the expansion plate 5 extends to bear goods, to improve the load stability of the expansion plate 5, and to avoid deformation due to the weight of the goods.

[0026] Two ends of the guardrail 2 are symmetrically fixedly connected with hinge seats 16, one end of the side baffle 3 is rotationally connected with the hinge seat 16 through a pin shaft, and flexible rotation of the side baffle 3 around the guardrail 2 is realized through cooperation of the hinge seat 16 and the pin shaft, so that smoothness of folding and unfolding actions is ensured; the side baffle 3 is fixedly provided with grid plates 19 in a longitudinal and transverse interlaced manner through a plurality of horizontal rods 17 and vertical rods 18, the grid plates 19 can effectively reduce the overall weight of the side baffle 3, reduce the energy consumption of the trolley movement, and facilitate observation of the placement state of goods inside the enclosure by the operator under the premise of ensuring the strength of the side baffle 3 and meeting the protection requirements of the goods.

[0027] The locking piece 4 comprises a mounting base 20 fixedly connected to the outside of the end of one group of side baffles 3 as a mounting and bearing basis of the locking piece 4; the mounting base 20 is rotationally connected with an operating handle 21 inside through a pin shaft, the operating handle 21 provides a convenient operating force applying component for the operator; a threaded groove is formed in the end of the operating handle 21 away from the rotation axis, and a clamping arm 22 is threadedly connected in the threaded groove, so that the clamping arm 22 moves linearly along the threaded groove through the rotating action of the operating handle 21, and the telescopic adjustment of the clamping arm 22 is realized.

[0028] The end of another group of side baffles 3 adjacent to the side baffle 3 provided with the locking piece 4 is fixedly connected with a sleeve hook 23 at a corresponding position, and the sleeve hook 23 serves as a locking matching component; the clamping arm 22 can be precisely hooked or separated from the sleeve hook 23 through the pulling action of the operating handle 21 by the operator, the clamping arm 22 and the sleeve hook 23 are locked and fixed through the reset pulling of the operating handle 21 after the clamping arm 22 hooks the sleeve hook 23, thereby realizing the stable connection between the two adjacent groups of side baffles 3, and ensuring the integrity and reliability of the enclosure structure.

[0029] A plurality of universal wheels 24 are uniformly rotationally connected to the positions close to the four corners of the bottom plate 1, the universal wheels 24 have a 360-degree steering function, and the core role is to reduce the moving resistance of the trolley, so that the trolley can flexibly adapt to the steering and moving requirements in different scenes such as storage channels and narrow lanes in workshops, and the convenience of goods transfer is improved.

[0030] A push handle 25 is fixedly connected to the outer side of the middle of one group of guardrails 2, the push handle 25 is ergonomically designed to provide a convenient force applying component for the operator, and the trolley can be easily pushed to move through the push handle 25, and the precise steering and position adjustment of the trolley are realized in cooperation with the universal wheels 24.

[0031] The folding side plate trolley, the side baffle 3 is unfolded and locked: first, the side baffle 3 in the folded state is rotated outward around the pin shaft connected with the guardrail 2 and the baffle 2, until the side baffle 3 is rotated to the preset surrounding position perpendicular to the bottom plate 1, at this time, the side baffle 3 and the bottom plate 1 form a stable surrounding structure prototype, then the locking piece 4 on the side baffle 3 is operated, the operating handle 21 in the mounting base 20 is pulled, when the operating handle 21 rotates around the pin shaft, through the internal thread groove and the thread cooperation of the clamping arm 22, the clamping arm 22 is driven to move to the adjacent side baffle 3 direction, until the clamping arm 22 accurately hooks the sleeve hook 23 on the adjacent side baffle 3, then the operating handle 21 is reset, the operating handle 21 pulls the clamping arm 22 to move in the opposite direction of the sleeve hook 23, so that the clamping arm 22 and the sleeve hook 23 are tensioned, the locking and fixing between the adjacent side baffles 3 are completed, through the unfolding and locking of multiple side baffles 3, a complete circumferential surrounding structure is formed, which can effectively prevent the goods from overturning or falling during the transfer process; Extension assembly adjustment (on-demand use): when the amount of goods to be transferred exceeds the inherent carrying capacity of the bottom plate 1, the stroke cylinder 6 on the mounting frame 7 is started, the piston rod of the stroke cylinder 6 is retracted inward, the moving arm 8 connected therewith is pulled to slide along the sliding block in the mounting frame 7, since the tooth plate 11 at the bottom of the moving arm 8 is meshed with the gear 10 in the fixed seat 9, the moving arm 8 slides to drive the gear 10 to rotate around its rotating shaft, the rotation of the gear 10 is transmitted to the connecting plate 13 through the connecting rod 12, and then the extension plate 5 connected with the connecting plate 13 is synchronously moved, so that the extension plate 5 is smoothly extended from the bottom of the bottom plate 1, during the extension of the extension plate 5, the pulley 15 on the pulley frame 14 at the bottom of the extension plate 5 contacts and rolls on the ground, on the one hand, it provides auxiliary support for the extension plate 5, enhances the stability of the extension plate 5 when carrying goods, on the other hand, it reduces the friction between the extension plate 5 and the ground when moving, ensures smooth extension, if the amount of goods to be transferred is within the inherent carrying capacity of the bottom plate 1, the stroke cylinder 6 does not need to be started, the extension plate 5 is kept retracted to the bottom of the bottom plate 1, and the bottom plate 1 is directly used to carry goods.

[0032] When the goods are placed stably on the carrying surface of the bottom plate 1 or the extension plate 5, the placement position of the goods is ensured to be centered and stable, the center of gravity is avoided to be deviated, the operator holds the push handle 25 on the guardrail 2, applies a pushing force to the target direction, and the trolley and the loaded goods are moved in multiple directions by the rolling function of the universal wheel 24 at the bottom of the bottom plate 1 and the pulley 15 at the bottom of the extension plate 5, and the short-distance transfer operation is completed; Unlocking and folding the side plates 3: After the goods are transferred to the target position and unloaded, the side plates 3 are unlocked first, the operating handle 21 of the locking part 4 is pulled in the reverse direction, the clamping arm 22 is moved in the reverse direction, the clamping arm 22 is separated from the hook 23 of the adjacent side plate 3, the locking state between the adjacent side plates 3 is released, then each side plate 3 is rotated inward around the pin shaft of the hinge seat 16, until the side plate 3 is folded and attached to the inner side of the guardrail 2 or the two sides of the bottom plate 1, and the storage of the side plate 3 is completed; Retracting the extension assembly: the travel cylinder 6 is started, and the piston rod thereof is pushed outwards, the piston rod pushes the moving arm 8 hinged thereto to slide reversely along the sliding block in the mounting frame 7, when the moving arm 8 slides, the gear 10 is driven to rotate reversely through the meshing transmission of the gear plate 11 and the gear 10, the reverse rotation of the gear 10 is transmitted to the connecting plate 13 through the connecting rod 12, and then the extension plate 5 is driven to move towards the bottom of the bottom plate 1, so that the extension plate 5 is gradually retracted to the preset storage position at the bottom of the bottom plate 1, until the extension plate 5 is completely attached to the bottom plate 1, at this time, the trolley is completely folded and stored, the volume is reduced to the minimum, and multiple trolleys can be stacked and stored or pushed to the designated storage area.

[0033] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A folding side panel trolley, characterized in that, include: The base plate (1) has guardrails (2) connected to both ends of the top of the base plate (1); Side baffle (3), the side baffle (3) is provided with several sets and several sets of side baffles (3) are respectively hinged to the top two sides of the bottom plate (1) for folding and storage. The two adjacent sets of side baffles (3) are locked together by locking parts (4) to ensure the stability of the side baffle (3) enclosure. An extension assembly is located at the bottom of the base plate (1) and is used to expand the load capacity of the trolley. The extension assembly includes an extension plate (5) and a stroke cylinder (6). The stroke cylinder (6) is provided in two sets, and the two sets of stroke cylinders (6) are respectively installed on both sides of the bottom of the base plate (1) through the mounting bracket (7). The extension plate (5) is driven to extend from the bottom of the base plate (1) by the stroke cylinder (6) so that the extended extension plate (5) increases the load capacity of the base plate (1).

2. The folding side panel trolley according to claim 1, characterized in that: The mounting bracket (7) is slidably connected to a movable arm (8) via a slider. The piston rod of the stroke electric cylinder (6) is hinged to one end of the movable arm (8). One end of the mounting bracket (7) is connected to a fixed seat (9), and a gear (10) is rotatably connected to the fixed seat (9) via a rotating shaft.

3. A folding side panel trolley according to claim 2, characterized in that: The bottom of the moving arm (8) is connected to a toothed plate (11) that meshes with the gear (10), and one end of the mounting frame (7) is connected to a connecting plate (13) via a connecting rod (12).

4. A folding side panel trolley according to claim 3, characterized in that: One end of the expansion plate (5) is connected to the connecting plate (13), and the bottom of the connecting plate (13) and the expansion plate (5) are rotatably connected to the pulley (15) through the pulley frame (14).

5. A folding side panel trolley according to claim 1, characterized in that: The guardrail (2) is connected to hinge seats (16) at both ends. One end of the side baffle (3) is hinged to the hinge seat (16) by a pin. The side baffle (3) is provided with a grid plate (19) in a crisscross pattern by several horizontal bars (17) and vertical bars (18).

6. A folding side panel trolley according to claim 1, characterized in that: The locking component (4) includes a mounting base (20), which is connected to one of the side baffles (3) and has an operating handle (21) rotatably connected inside the mounting base (20) via a pin. The operating handle (21) has a threaded groove and a clamping arm (22) is threaded inside the threaded groove.

7. A folding side panel trolley according to claim 6, characterized in that: Another set of side baffles (3) is connected to a hook (23). By operating the lever (21), the clamping arm (22) is controlled to hook the hook (23), thereby locking the two adjacent sets of side baffles (3).

8. A folding side panel trolley according to claim 1, characterized in that: The bottom of the base plate (1) is rotatably connected to several casters (24).

9. A folding side panel trolley according to claim 1, characterized in that: One of the guardrails (2) is connected to a push handle (25).

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