A flatbed cart structure that is easy to assemble

Abstract

A flatbed cart structure that is easy to assemble includes a fixed base plate, a movable plate, an expansion plate, a worm gear, a driving connecting rod, a control support rod, and a fixed bracket. The upper part of the fixed base plate is connected to a push rod, and the lower part of the fixed base plate is connected to a movable wheel. The fixed base plate has storage grooves on both sides, the storage grooves are adapted to the movable plate, the storage grooves are connected to the movable plate, and the lower part of the movable plate has a limiting slide groove. The upper part of the movable plate is connected to the expansion plate, the expansion plate has a plurality of positioning protrusions, the movable plate has a plurality of positioning grooves, the positioning protrusions are adapted to the positioning grooves, and the positioning protrusions are connected to the positioning grooves. The lower part of the fixed base plate is connected to the fixed bracket, and the fixed bracket has side strips on both sides, the side strips are connected to the fixed base plate, the fixed base plate has external perforations, and the side strips have limiting card plates, the limiting card plates are adapted to the external perforations and the limiting slide grooves, the limiting card plates pass through the external perforations, and the limiting card plates are connected to the limiting slide grooves.

Description

Technical Field

[0001] The utility model relates to the field of flatbed carts, in particular to a flatbed cart structure which is easy to assemble. Background Art

[0002] The existing patent (Announcement No.: CN219172450U) proposes a flatbed cart folding structure that is easy to assemble, including a bottom plate and a folding, the bottom end of the bottom plate is rotatably mounted with a universal wheel, the top end of the bottom plate is fixedly mounted with a handle and a fixing plate, the side of the bottom plate is provided with a groove, the top end of the bottom plate is provided with a card slot, the bottom end of the folding is fixedly mounted with a protrusion, the two ends of the protrusion are fixedly mounted with sleeves, and the inside of the bottom plate is provided with a cavity. However, the "bottom plate" structure in this device is relatively fixed, and its bearing area cannot be correspondingly expanded according to the actual volume of the cargo being carried. The structural flexibility is poor, the scope of application is limited, and there are disadvantages. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a flatbed cart structure that is convenient for transporting and transferring goods and can correspondingly expand its carrying area according to the actual volume of the goods, thereby meeting the demand for transporting goods of larger sizes and improving the practical performance and application scope of the flatbed cart. The expansion plate is easy to assemble, the movable plate is convenient to control the position, and the structure is flexible and easy to assemble.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A flatbed cart structure that is easy to assemble, includes a fixed base plate, a movable plate, an expansion plate, a worm gear, a driving connecting rod, a control support rod, and a fixed bracket. The upper part of the fixed base plate is connected to a push rod, and the lower part of the fixed base plate is connected to a movable wheel. The fixed base plate has storage grooves on both sides, the storage grooves are adapted to the movable plate, the storage grooves are connected to the movable plate, and the lower part of the movable plate has a limiting slide groove. The upper part of the movable plate is connected to the expansion plate, the expansion plate has a plurality of positioning protrusions, the movable plate has a plurality of positioning grooves, the positioning protrusions are adapted to the positioning grooves, and the positioning protrusions are connected to the positioning grooves. The lower part of the fixed base plate is connected to the fixed bracket, and the fixed bracket has side strips on both sides, the side strips are connected to the fixed base plate, the fixed base plate has external perforations, and the side strips have limiting card plates, the limiting card plates are adapted to the external perforations and the limiting slide grooves, the limiting card plates pass through the external perforations, and the limiting card plates are connected to the limiting slide grooves.

[0006] The utility model provides placement grooves on both sides of the fixed base plate, the placement grooves are adapted to the worm gear, the placement grooves are connected to the worm gear, the outside of the worm gear fits the fixed base plate, the inside of the worm gear is connected to a position control support rod, the outer end of the position control support rod is connected to the movable plate through a thread, the inner end of the position control support rod is sequentially connected to the fixed base plate and the worm gear, the worm gear has a position control convex block, the position control support rod has a position control groove, the position control convex block is adapted to the position control groove, the position control convex block is connected to the position control groove, the position control support rod has a fastening card slot, the fixed base plate has an inner through hole, the side strip plate has a fastening card plate, the fastening card plate is adapted to the inner through hole and the fastening card slot, the fastening card plate passes through the inner through hole, and the fastening card plate is connected to the fastening card slot.

[0007] The utility model provides worms on both sides of the driving connecting rod, the worms are adapted to the worm wheels, the worms are connected to the worm wheels, the driving connecting rods have limit baffles at both ends, the fixed brackets have mounting support plates on both sides, the inner sides of the mounting support plates are fitted with the limit baffles, and the outer sides of the mounting support plates are provided with outer support sleeves. Beneficial Effects

[0008] The push rod of the utility model cooperates with the moving wheel, which increases the mobility of the flatbed cart and facilitates the transportation and transfer of goods. The worm gears provided on both sides of the driving connecting rod correspond to and are connected with the worm wheels on both sides, so that when the driving connecting rod is driven to rotate by rotating the rotating wheel, the worm wheels on both sides are linked accordingly. The worm wheels and the control support rods on both sides are embedded and plugged in, and the positioning is accurate, which is convenient for fast and accurate docking and installation between components, and provides a force fulcrum for the worm wheel to drive the control support rods on both sides to rotate synchronously. The control support rods on both sides are respectively positioned and connected with the movable plates on both sides through positive and negative threads. When the control support rod rotates, the movable plates on both sides simultaneously perform synchronous horizontal linear displacement to the inside or outside, so that the flatbed cart can be correspondingly expanded in accordance with the actual volume of the carried goods, so as to meet the demand for carrying larger-sized goods, improve the practical performance of the flatbed cart, and expand its scope of application.

[0009] When the flatbed cart carries relatively large items, the utility model can expand the carrying area of ​​the flatbed cart by driving the movable plate to move outward and add an extension plate, thereby increasing the practical performance and application scope of the cart body and ensuring the stability of placing and transporting large-volume goods. The extension plate is easy to disassemble and assemble, and the positioning protrusion is embedded in the positioning groove to increase the stability of its positioning and installation, prevent the extension plate from sliding and deviating, and improve the stability of the bearing capacity of the bottom of the goods. When the flatbed cart carries relatively small items, the extension plate can be removed and the movable plate can be driven to move inward to be completely stored in the storage groove, so that the flatbed cart maintains a reasonable carrying area while reducing the storage space occupied by the flatbed cart body. The device can synchronously control the position of the movable plates on both sides by rotating the rotating wheel, and the operation is convenient.

[0010] The fixed bracket of the utility model provides an installation fulcrum for the driving connecting rod and its driving component, and the fastening card plate and the limiting card plate thereof respectively increase the connection fulcrums between the fixed base plate and the position control support rod and the movable plate, wherein the fastening card plate limits the position of the position control support rod, so that the position control support rod can be axially rotated while maintaining its lateral position unchanged, thereby preventing the position control support rod from moving and disengaging, thereby affecting the linkage effect between the components, and the limiting card plate limits the position of the movable plate, thereby preventing the position control support rod from disengaging and falling from the fixed base plate during the displacement adjustment process, thereby improving the structural stability.

[0011] The utility model is easy to move and convenient for transporting and transferring goods. At the same time, its carrying area can be correspondingly expanded according to the actual volume of the goods to meet the needs of transporting larger-sized goods, thereby improving the practical performance and application scope of the flatbed cart. In addition, the expansion plate is easy to assemble, the movable plate control operation is convenient, and the structure is flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic structural diagram of a flatbed cart that is easy to assemble.

[0013] Figure 2 This is a schematic diagram of the expansion board of the utility model in use state.

[0014] Figure 3 This is an exploded view of the structure of a flatbed cart that is easy to assemble according to the utility model.

[0015] Figure 4 This is a cross-sectional view of the structure of a flatbed cart that is easy to assemble according to the utility model.

[0016] Figure 5 This is a cross-sectional view of the position-controlling support rod driving structure described in the utility model.

[0017] Figure 6 This is a schematic diagram of the movable plate driving structure of the utility model.

[0018] Figure 7 This is a schematic diagram of the fixed bracket structure described in the utility model.

[0019] Figure 8 This is a schematic diagram of the fixed base plate structure described in the utility model.

[0020] Fig. 9 It is an exploded view of the movable plate driving structure described in the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0022] Embodiment 1:

[0023] A flatbed cart structure that is easy to assemble, includes a fixed bottom plate 03, a movable plate 04, an expansion plate 05, a worm gear 10, a driving connecting rod 12, a control support rod 22, and a fixed bracket 30. The upper part of the fixed bottom plate 03 is connected to the push rod 02, and the lower part of the fixed bottom plate 03 is connected to the moving wheel 01. The fixed bottom plate 03 has storage grooves 08 on both sides, and the storage grooves 08 are adapted to the movable plate 04. The storage grooves 08 are connected to the movable plate 04. The lower part of the movable plate 04 has a limiting slide groove 27. The upper part of the movable plate 04 is connected to the expansion plate 05. The expansion plate 05 has a plurality of positioning protrusions 06. The movable plate 04 has a plurality of positioning grooves 07. The positioning protrusions 06 are adapted to the positioning grooves 07, and the positioning protrusions 06 are connected to the positioning grooves 07. The lower part of the fixed bottom plate 03 is connected to the fixed bracket 30. The fixed bracket 30 has side strips 31 on both sides, and the side strips 31 are connected to the fixed bottom plate 03. The fixed bottom plate 03 has an outer perforation 28, and the side strip 31 has a limiting card plate 26. The limiting card plate 26 is adapted to the outer perforation 28 and the limiting slide groove 27. The limiting card plate 26 passes through the outer perforation 28, and the limiting card plate 26 is connected to the limiting slide groove 27. The push rod 02 cooperates with the moving wheel 01 to increase the convenience of the flatbed cart to move and facilitate the transportation and transfer of goods. The worm 11 provided on both sides of the driving connecting rod 12 corresponds to and is connected to the worm gears 10 on both sides, so that when the driving connecting rod 12 is driven to rotate by rotating the rotating wheel 14, the worm gears 10 on both sides are linked, and the worm gears 10 and the control positions on both sides are connected. The support rods 22 are embedded and plug-in, with precise positioning, which facilitates quick and accurate docking and installation between components, and provides a force fulcrum for the worm gear 10 to drive the control support rods 22 on both sides to rotate synchronously. The control support rods 22 on both sides are positioned and connected with the movable plates 04 on both sides through positive and negative threads respectively, so that when the control support rods 22 rotate, the movable plates 04 on both sides simultaneously perform synchronous horizontal linear displacement inward or outward, so that the carrying area of ​​the flatbed cart can be correspondingly expanded according to the actual volume of the goods being transported, so as to meet the needs of transporting larger-sized goods, improve the practical performance of the flatbed cart, and expand its scope of application.

[0024] Embodiment 2:

[0025] The utility model provides two sides of the fixed bottom plate 03 with placement grooves 09, the placement grooves 09 are adapted to the worm gear 10, the placement grooves 09 are connected to the worm gear 10, the outside of the worm gear 10 is attached to the fixed bottom plate 03, the inside of the worm gear 10 is connected to the control rod 22, the outer end of the control rod 22 is connected to the movable plate 04 by a thread, the inner end of the control rod 22 is sequentially connected to the fixed bottom plate 03 and the worm gear 10, the worm gear 10 has a control block 20, the control rod 22 has a control groove 21, the control block 20 is adapted to the control groove 21, the control block 20 is connected to the control groove 21, the control rod 22 has a fastening card groove 24, the fixed bottom plate 03 has an inner through hole 25, the side strip plate 31 has a fastening card plate 23, the fastening card plate 23 and the inner through hole 2 5. The fastening card slot 24 is adapted to the fastening card plate 23, which passes through the inner through hole 25. The fastening card plate 23 is connected to the fastening card slot 24. The fixed bracket 30 provides an installation fulcrum for the driving connecting rod 12 and its driving component. The fastening card plate 23 and the limiting card plate 26 it has respectively increase the connection fulcrums between the fixed bottom plate 03 and the control support rod 22 and the movable plate 04. The fastening card plate 23 limits the position of the control support rod 22, so that the control support rod 22 can maintain its lateral position unchanged and perform axial rotation to avoid its movement and separation, which affects the linkage effect between the components. The limiting card plate 26 limits the position of the movable plate 04 to prevent it from separating from the fixed bottom plate 03 during the displacement adjustment process, thereby improving the structural stability.

[0026] Embodiment 3:

[0027] The utility model has worms 11 on both sides of the driving connecting rod 12, the worms 11 are adapted to the worm wheel 10, the worms 11 are connected to the worm wheel 10, the driving connecting rod 12 has limit baffles 18 on both ends, and the fixed bracket 30 has mounting support plates 19 on both sides, the inner side of the mounting support plate 19 is fitted with the limit baffle 18, and the outer side of the mounting support plate 19 is provided with an outer support sleeve 29. When the flatbed cart carries large items, the movable plate 04 can be driven outward and an expansion plate 05 can be added to expand the carrying area of ​​the flatbed cart, increase the practical performance and application range of the vehicle body, and ensure the placement and transportation of large-volume goods. The expansion plate 05 is stable and easy to assemble and disassemble, and the positioning protrusion 06 is embedded in the positioning groove 07 to increase the stability of its positioning and installation, prevent the expansion plate 05 from sliding and deviating, and improve the stability of the bottom bearing capacity of the goods. When the flatbed cart carries smaller items, the expansion plate 05 can be removed, and the movable plate 04 can be driven inward to be completely stored in the storage groove 08, so that the flatbed cart maintains a reasonable carrying area while reducing the storage space occupied by the flatbed body. The device can synchronously control the position of the movable plates 04 on both sides by rotating the rotating wheel 14, and the operation is convenient.

[0028] Embodiment 4:

[0029] The outer support sleeve 29 of the utility model fits the rotating wheel 14, and the rotating wheel 14 has a driving shaft rod 13, which passes through the outer support sleeve 29 and the mounting support plate 19 in sequence, and the driving shaft rod 13 is connected to the driving connecting rod 12, and the driving connecting rod 12 has docking slots 16 on both sides, and the driving shaft rod 13 has a docking plug rod 15, and the docking plug rod 15 is adapted to the docking slot 16, and the docking plug rod 15 is connected to the docking slot 16, and the docking plug rod 15 is connected to the driving connecting rod 12 through a fixing screw 17, and the fixing screw 17 connects the driving connecting rod 12 and the docking plug rod 15 in sequence. This device is easy to move, convenient for cargo transportation and transfer, and can be used according to the actual volume of the cargo. The carrying area can be correspondingly expanded to meet the needs of carrying larger-sized cargo, improve the practical performance and application range of the flatbed cart, and the expansion plate 05 is easy to assemble, the movable plate 04 is easy to control and operate, and the structure is flexible.

[0030] Embodiment 5:

[0031] Installation steps: First, assemble the fixed bracket 30 structure, first place the driving connecting rod 12 at the bottom of the fixed bracket 30, and the outer surface of the limit baffle 18 is in contact with the inner surface of the mounting support plate 19, and then pass the driving shaft 13 through the outer support sleeve 29 and the mounting support plate 19 in sequence, until the inner surface of the rotating wheel 14 is in contact with the outer surface of the outer support sleeve 29, and the docking rod 15 is embedded in the docking slot 16, and the driving connecting rod 12 and the docking rod 15 are fixedly connected by the fixing screws 17. After completing the assembly of the fixed bracket 30 structure, assemble the fixed base plate 03 structure, first install and fix the moving wheel 01 to the lower part of the fixed base plate 03, and weld the push rod 02 to the upper part of the fixed base plate 03, and then place the worm gear 10 in the placement slot 09, and the worm gear 1 0, the outer surface is fitted with the fixed base plate 03, and then the control rod 22 is connected to the fixed base plate 03 and the worm wheel 10 in sequence, and the control protrusion 20 is embedded in the control groove 21, the fastening slot 24 and the inner through hole 25 are first corresponding in position, and then the movable plate 04 is placed in the storage groove 08, and the movable plate 04 is sleeved on the outside of the control rod 22, and is positioned and connected with the control rod 22 through a thread, and the limiting slide groove 27 and the outer through hole 28 correspond in position, and finally the assembled fixed bracket 30 is installed and fixed to the bottom of the fixed base plate 03, and the fastening card plate 23 passes through the inner through hole 25 and is embedded in the fastening card groove 24, and the limiting card plate 26 passes through the outer through hole 28 and is embedded in the limiting slide groove 27, the worm 11 on both sides and the worm wheels 10 on both sides are corresponding and connected, and the installation is completed.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A flatbed cart structure that is easy to assemble, characterized in that : comprising a fixed base plate (03), a movable plate (04), an expansion plate (05), a worm gear (10), a driving connecting rod (12), a position control support rod (22), and a fixed bracket (30), wherein the upper portion of the fixed base plate (03) is connected to the push rod (02), the lower portion of the fixed base plate (03) is connected to the moving wheel (01), the fixed base plate (03) has storage grooves (08) on both sides, the storage grooves (08) are adapted to the movable plate (04), and the storage grooves (08) are connected to the movable plate (04), The movable plate (04) has a limiting slide groove (27) at the bottom, the movable plate (04) is connected to the expansion plate (05) at the top, the expansion plate (05) has a plurality of positioning protrusions (06), the movable plate (04) has a plurality of positioning grooves (07), the positioning protrusions (06) are adapted to the positioning grooves (07), the positioning protrusions (06) are connected to the positioning grooves (07), the fixed bottom plate (03) is connected to the fixed bracket (30) at the bottom, the fixed bracket (30) has side strips (31) on both sides, the side strips (31) are connected to the fixed bottom plate (03), the fixed bottom plate (03) has an external through hole (28), the side strips (31) have a limiting card plate (26), the limiting card plate (26) is adapted to the external through hole (28) and the limiting slide groove (27), the limiting card plate (26) passes through the external through hole (28), and the limiting card plate (26) is connected to the limiting slide groove (27).

2. A flatbed cart structure that is easy to assemble according to claim 1, characterized in that The fixed base plate (03) has placement grooves (09) on both sides, the placement grooves (09) are adapted to the worm wheel (10), the placement grooves (09) are connected to the worm wheel (10), the outside of the worm wheel (10) is attached to the fixed base plate (03), the inside of the worm wheel (10) is connected to the control rod (22), the outer end of the control rod (22) is connected to the movable plate (04) through a thread, the inner end of the control rod (22) is connected to the fixed base plate (03) and the worm wheel (10) in sequence, the worm wheel (10) has a control protrusion (20), and the control rod (22) A position-controlling groove (21) is provided, the position-controlling protrusion (20) is adapted to the position-controlling groove (21), the position-controlling protrusion (20) is connected to the position-controlling groove (21), the position-controlling support rod (22) is provided with a fastening slot (24), the fixed bottom plate (03) is provided with an inner through hole (25), the side strip plate (31) is provided with a fastening card plate (23), the fastening card plate (23) is adapted to the inner through hole (25) and the fastening card plate (24), the fastening card plate (23) passes through the inner through hole (25), and the fastening card plate (23) is connected to the fastening slot (24).

3. A flatbed cart structure that is easy to assemble according to claim 2, characterized in that : The driving connecting rod (12) has worms (11) on both sides, the worms (11) are adapted to the worm wheel (10), the worms (11) are connected to the worm wheel (10), the driving connecting rod (12) has limit baffles (18) on both ends, the fixed bracket (30) has mounting support plates (19) on both sides, the inner side of the mounting support plate (19) is in contact with the limit baffle (18), and the outer side of the mounting support plate (19) has an outer support sleeve (29).

4. A flatbed cart structure that is easy to assemble according to claim 3, characterized in that The outer support sleeve (29) fits the rotating wheel (14), the rotating wheel (14) has a driving shaft (13), the driving shaft (13) passes through the outer support sleeve (29) and the mounting support plate (19) in sequence, the driving shaft (13) is connected to the driving connecting rod (12), the driving connecting rod (12) has docking slots (16) on both sides, the driving shaft (13) has a docking plug rod (15), the docking plug rod (15) is adapted to the docking slot (16), the docking plug rod (15) is connected to the docking slot (16), the docking plug rod (15) is connected to the driving connecting rod (12) through a fixing screw (17), and the fixing screw (17) is connected to the driving connecting rod (12) and the docking plug rod (15) in sequence.

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