Crate wagon

Abstract

A box trolley, characterized in that the box trolley comprises a trolley body (6), wherein the trolley body (6) has a trolley plate (1), an arm support (2) and a rotatable base plate (3); wheel brackets (4) and wheels (5) mounted on the wheel brackets (4) are arranged on the underside of the trolley plate (1), the arm support (2) is provided on the trolley plate (1), and the base plate (3) is mounted on the side of the trolley plate (1) facing away from the arm support (2); dampers (7) are arranged on the trolley body (6) or on the base plate (3), the dampers (7) are mounted at the contact points between the base plate (3) and the wheel brackets (4), and serve to control the maximum opening angle of the base plate (3) relative to the trolley plate (1).

Description

Technical area

[0001] The present utility model relates to the field of transport equipment, in particular a box trolley. State of the art

[0002] Box trolleys are transport devices that typically have wheels on the underside of the platform and an armrest on the base for moving goods. With existing box trolleys, the base usually requires additional limiting elements or fixing devices to maintain its angle after opening. These limiting elements have a complex structure and are prone to damage with long-term use.

[0003] The armrests of box trolleys are generally at a fixed, upright angle. The entire vehicle cannot be folded and stored, so the box trolley takes up a lot of space when not in use. Content of the utility model

[0004] To solve the aforementioned problems, the present utility model provides a box trolley that can be folded and stowed away, whose base plate is rotatable and which has a fixing device.

[0005] The present utility model is realized by the following technical solutions: A box trolley comprises a trolley body, the trolley body comprising a trolley platform, an armrest, and a base plate. Wheel mounts and wheels on the wheel mounts are arranged on the underside of the trolley platform. An armrest is provided on the trolley platform. A rotatable base plate is mounted on the side of the trolley platform of the trolley body facing away from the armrest. Dampers are arranged on the trolley body or on the base plate, mounted at the contact points between the base plate and the wheel mounts. The maximum opening angle of the base plate relative to the trolley platform is controlled by the dampers.

[0006] Preferably, a contact section is formed on the underside of the base plate, and the dampers are arranged on the base plate or the carriage plate of the contact section.

[0007] Preferably, the dampers are passive dampers, each comprising a support sliding block. The support sliding blocks are slidably mounted in support slots formed in the contact section. The dampers further comprise elastic support elements. The elastic support elements are mounted at the rear ends of the support sliding blocks to ensure elastic support of the support sliding blocks.

[0008] Preferably, the dampers are designed as side parts that are provided on the underside of the base plate, and the side parts are connected to the main body of the vehicle via base plate shafts.

[0009] Preferably, the base plate is designed as a flat plate or with a lower arc-shaped damper structure, so that the whole has the shape of a J sign, with a straight upper end and a curved lower end.

[0010] Preferably, the side panels are arranged on the underside of the base plate. The side panels are positioned on the lower, arched, damping structure of the base plate. Base plate shafts are provided in the center of the side panels and are connected to front shaft bores in the carriage plate. Rotating locking tabs are arranged at the rear ends of the base plate shafts. These locking tabs either release from or engage with ball projections provided on the carriage plate when rotated, thus ensuring that the base plate's rotation angle is fixed.

[0011] Preferably, detent holes or open detent grooves are formed on the rotary locking plates, and the rotation angle of the base plate is fixed by engaging the detent holes in the ball projections or by sliding the open detent grooves over the ball projections.

[0012] Preferably, curved rings are provided on the outer sides of the side parts, stop blocks are formed on the carriage plate, and the base plate and the side parts are rotated together up to an angle of 90° perpendicular to the carriage plate and fixed by the stop blocks.

[0013] Preferably, the elastic support elements comprise adjusting screws and support springs, wherein the adjusting screws are screw-mounted to positioning plates. The positioning plates are fixedly mounted in the support slots. The support springs are attached to the tips of the adjusting screws. Ends of the support springs are fixedly connected to the adjusting screws, and the other ends are inserted into spring bores formed at the rear ends of the support sliding blocks.

[0014] Preferably, wave-shaped spiral springs are provided on the base plate shafts to hold the base plate in an upright position; locking claws are formed on the top of the base plate; and after the base plate rests flat on the trolley plate, the locking claws engage with the trolley plate, so that a binding rope can also be used to secure goods.

[0015] Preferably, an armrest shaft rod is provided on the underside of the armrest. The front and rear ends of the armrest shaft rod are fixed to the carriage plate, and the armrest can be rotated by an angle of at least 10° about the armrest shaft rod as the axis of rotation.

[0016] Preferably, an armrest locking shaft is provided on the underside of the armrest. At least one armrest locking core is arranged at the front and / or rear end of the armrest locking shaft. Positioning plates are provided opposite the armrest locking cores. The positioning plates are fixed to the carriage plate, and armrest locking bores are formed in the positioning plates. The armrest is rotated about the armrest shaft rod as the axis of rotation, and the angular positioning is achieved by the armrest locking core engaging in the armrest locking bores.

[0017] Preferably, the positioning plates are designed as semicircular plates, in whose arc positions of 0°, 90° and 180° an arm support locking bore is formed.

[0018] Preferably, the armrest locking shaft comprises armrest locking cores, elastic pull bolts, a locking shaft tube, and a return spring. Armrest locking cores are arranged at the front and / or rear end of the locking shaft tube. Ball rods are provided at the outwardly facing tips of the armrest locking cores, and elastic pull bolts are arranged on these ball rods at the tube's midpoints. The elastic pull bolts return to their midpoint position within the locking shaft tube after displacement, thanks to the return spring. The armrest locking cores can be locked and unlocked by pulling the elastic pull bolts.

[0019] Preferably, displacement slots are formed on the outer wall of the locking shaft tube. The elastic tension bolts are moved within the displacement slots to control the locking and unlocking relationship between the armrest locking shaft and the positioning plates.

[0020] The present utility model offers the following advantages: The contact support between the base plate and the wheel mounts of the cart body, along with the dampers, allows for effective control of the maximum opening angle of the base plate. The dampers provide a specific damping and compliance capacity, ensuring that the base plate remains fixed in its angular position after opening without the need for additional limiting elements, while simultaneously increasing the load capacity. The armrest is equipped with an armrest shaft rod that allows the entire armrest to rotate around the shaft rod. The combination of the armrest shaft rod, armrest locking shaft, and positioning plates further enhances the armrest, enabling it to be positioned at fixed angles and allowing the cart plate and armrest to be folded, as well as the cart to be pushed and pulled vertically. Description of the attached drawings Fig. 1 is an overall structure view; Fig. 2 is a bottom view; Fig. Figure 3 is a structural view of a passive damper; Fig. Figure 4 is an exploded view of the overall structure; Fig. 5 is a structural view of the active damping device; Fig. Figure 6 is a structural view of embodiment 2; Fig. Figure 7 is a spatial bottom view of embodiment 2; and Fig. Figure 8 is a structural view of an armrest ratchet shaft and surrounding components. Examples of implementation

[0021] The technical solutions in the exemplary embodiments of the present utility model are described clearly and completely below with reference to the drawings.

[0022] Example 1: As in the Fig. 1, Fig. 2 to Fig. As shown in Figure 3, a box trolley comprises a trolley body 6, the trolley body 6 comprising a trolley platform 1, an arm support 2, and a base plate 3. The trolley platform 1 serves to hold goods, and the base plate 3 serves to limit the movement of goods at the front of the trolley. Wheel mounts 4 and wheels 5 on the wheel mounts 4 are arranged on the underside of the trolley platform 1. The wheel mounts 4 ensure stable support of the wheels and smooth movement. An arm support 2 is provided on the trolley platform 1, which is used for pushing or pulling the trolley, and for reinforcement, the trolley platform 1 can be provided with a trolley platform frame 38 made of steel tubing.

[0023] As in the Fig. 1, Fig. 3 and Fig. As shown in Figure 4, the rotatable base plate 3 is mounted on the side of the carriage plate 1 of the carriage body 6 that faces away from the arm support 2. Dampers 7 are arranged on the carriage body 6 or on the base plate 3, mounted at the contact points between the base plate 3 and the wheel mounts 4. A contact section 8 is formed on the underside of the base plate 3, and the dampers 7 are arranged on the base plate 3 of the contact section 8 or on the carriage plate 1 of the contact section 8 to control the maximum opening angle of the base plate 3 relative to the carriage plate 1.

[0024] As in Fig. As shown in Figure 1, the base plate 3 is in an open, upright position. The right sides of the dampers 7 at the contact section 8 are in contact with the front of the wheel mounts 4. When goods are placed on the base plate 3, they automatically exert a force on the base plate 3 (on its left side), and the wheel mounts 4 prevent further rotation of the base plate 3 to maintain a supported, upright position. This eliminates the need for additional limiting elements to fix the base plate 3, as the wheel mounts 4 directly provide the support. This not only simplifies the wagon structure but also increases the load-bearing capacity of the base plate 3 while simultaneously reducing manufacturing costs and the complexity of subsequent maintenance.

[0025] The functions of the dampers 7 for fixing, damping and controlling the maximum opening angle of the base plate 3 relative to the carriage plate 1 are realized by the following structures: As in Fig. Figure 3 shows: A. The dampers 7 are passive dampers 37. To ensure the controllability of the opening angle of the base plate 3, passive dampers 37 are mounted on the contact section 8 of the base plate 3. By adjusting the positions of adjusting screws 21 of the passive dampers 37, the compression degree of support springs 23 can be changed, thereby adjusting the elastic support force of support sliding blocks 9 and thus controlling the maximum opening angle of the base plate 3 relative to the main body 6 as well as the elastic support force.

[0026] The passive dampers 37 comprise the support sliding blocks 9. The support sliding blocks 9 are slidably mounted in support slots 10. The support slots 10 are formed in the contact section 8. Elastic support elements 11 are mounted at the rear ends of the support sliding blocks 9 to ensure elastic support of the support sliding blocks 9.

[0027] The elastic support elements 11 include the adjusting screws 21. The adjusting screws 21 are screw-mounted to positioning plates. The positioning plates are fixedly mounted in the support slots 10. Support springs 23 are attached to the tips of the adjusting screws 21. Ends of the support springs 23 are fixedly connected to the adjusting screws 21, and the other ends are inserted into spring bores 24 formed at the rear ends of the support sliding blocks 9.

[0028] Furthermore, the support sliding blocks 9 have an "H" shape to form a positionally precise support with the wheel mounts 4 of the main carriage body 6. The "H"-shaped design ensures a more stable sliding movement of the support sliding blocks 9 in the support slots 10, prevents displacement or blockage, and simultaneously increases the contact area between the support sliding blocks 9 and the wheel mounts 4 to further improve the stability of the base plate 3 after opening.

[0029] As in the Fig. 5, Fig. 6 and Fig. Figure 7 shows: B. The dampers 7 have an active structure. The dampers 7 are designed as side parts 12, which are provided on the underside of the base plate 3, and the side parts 12 are connected to the main body of the vehicle 6 via base plate shafts 13.

[0030] The base plate 3 is designed as a flat plate or with a lower, arched damper structure. In this case, the dampers 7 are also passive, so that the base plate 3 as a whole has the shape of a J-sign, with a straight upper end and a curved lower end.

[0031] The side sections 12 are arranged on the lower, arched, damping structure of the base plate 3. Base plate shafts 13 are provided in the center of the side sections 12 and are connected in front shaft bores 14 of the carriage plate 1. Rotating locking plates 15 are arranged at the rear ends of the base plate shafts 13. When rotated, the rotating locking plates 15 either release from or engage ball projections 16 provided on the carriage plate 1 to ensure that the rotation angle of the base plate 3 is fixed.

[0032] The rotary locking plates 15 have locking bores 17 or open locking grooves 18, and the rotation angle of the base plate 3 is fixed by engaging the locking bores 17 in the ball projections 16 or by sliding the open locking grooves 18 over the ball projections 16.

[0033] Curved rings 19 are provided on the outer sides of the side parts 12, stop blocks 20 are formed on the carriage plate 1, and the base plate 3 and the side parts 12 are rotated together up to an angle of 90° perpendicular to the carriage plate 1 and fixed by the stop blocks 20.

[0034] The aforementioned active and passive dampers 7 enable effective control of the maximum opening angle of the base plate 3 through the contact support between the base plate 3 and the wheel mounts 4 of the main body of the vehicle 6, as well as the dampers 7. The dampers 7 can provide a certain damping and compliance capacity so that the base plate 3 remains fixed in its angular position after opening without additional limiting elements, while simultaneously increasing the load capacity.

[0035] Exemplary embodiment 2: Building on exemplary embodiment 1, the active structure of the dampers 7 is further improved. As in the Fig. 6 and Fig. Figure 7 shows that spiral springs 25 are provided on the base plate shafts 13 to hold the base plate 3 in an upright position. Locking claws 36 are formed on the upper side of the base plate 3, and after the base plate 3 rests flat on the trolley plate 1, the locking claws 36 engage with the trolley plate 1, allowing a tie rope to be used to secure goods.

[0036] Example 3: To improve the functionality of the armrest 2, as shown in the Fig. 4, Fig. 6, Fig. 7 and Fig. As shown in Figure 8, an armrest shaft rod 26 is provided on the underside of the armrest 2. The front and rear ends of the armrest shaft rod 26 are fixed to the carriage plate 1, and the armrest 2 can be rotated by an angle of at least 10° about the armrest shaft rod 26 as the axis of rotation.

[0037] An armrest locking shaft 27 is provided on the underside of the armrest 2. At least one armrest locking core 28 is arranged at the front and / or rear end of the armrest locking shaft 27. Positioning plates 29 are provided opposite the armrest locking cores 28. The positioning plates 29 are fixed to the carriage plate 1, and armrest locking bores 30 are formed in the positioning plates 29. The positioning plates 29 are designed as semicircular plates, with an armrest locking bore 30 formed at each of the arc positions of 0°, 90°, and 180°. The angular positioning of the armrest 2 is achieved by rotating it about the armrest shaft rod 26 as the axis of rotation and engaging the armrest locking cores 28 in the armrest locking bores 30 of the corresponding three angular positions.

[0038] As in Fig.As shown in Figure 8, the armrest locking shaft 27 comprises armrest locking cores 28, elastic pull bolts 31, a locking shaft tube 32, and a return spring 33. Armrest locking cores 28 are arranged at the front and / or rear end of the locking shaft tube 32. Ball rods 34 are provided at the outwardly directed tips of the armrest locking cores 28, and the elastic pull bolts 31 are arranged on the ball rods 34 at the tube's midpoints. The elastic pull bolts 31 return to their midpoint position within the locking shaft tube 32 after displacement by the return spring 33. The armrest locking cores 28 can be locked and unlocked by pulling the elastic pull bolts 31.

[0039] Displacement slots 35 are formed on the outer wall of the locking shaft tube 32. The elastic tension bolts 31 are displaced in the displacement slots 35. As shown in the drawing, the armrest locking shaft 27 remains in a permanent unlocked state when the elastic tension bolts 31 are pulled into the lower parts of the L-shaped displacement slots 35 and lock into place; otherwise, when they are displaced upwards, the armrest locking shaft 27 can enter into a locking relationship with the positioning plates 29 during rotation of the armrest 2.

[0040] The foregoing description relates only to specific embodiments of the present utility model. It is self-evident that, for a person skilled in the relevant technical field, modifications and adaptations can be made without deviating from the core concept and scope of the present utility model. Therefore, the scope of protection of the present utility model shall be defined by the accompanying claims.

Claims

[1] A box truck, characterized by , that the box trolley comprises a trolley body (6) wherein the trolley body (6) has a trolley plate (1), an arm support (2) and a rotatable base plate (3); wheel mounts (4) and wheels (5) mounted on the wheel mounts (4) are arranged on the underside of the trolley plate (1), the arm support (2) is provided on the trolley plate (1), and the base plate (3) is mounted on the side of the trolley plate (1) facing away from the arm support (2); dampers (7) are arranged on the trolley body (6) or on the base plate (3), the dampers (7) are mounted at the contact points between the base plate (3) and the wheel mounts (4), and serve to control the maximum opening angle of the base plate (3) relative to the trolley plate (1). [2] The box trolley according to claim 1, characterized by, that a contact section (8) is formed on the underside of the base plate (3), and the dampers (7) are arranged on the base plate (3) or the carriage plate (1) according to the contact section (8). [3] The box trolley according to claim 1, characterized by , that the dampers (7) are passive dampers (37), wherein the passive dampers (37) comprise support sliding blocks (9) and elastic support elements (11); the support sliding blocks (9) are mounted slidingly in support slots (10) formed in the contact section (8); the elastic support elements (11) are mounted at the rear ends of the support sliding blocks (9) to ensure elastic support of the support sliding blocks (9). [4] The box trolley according to claim 1, characterized by , that the dampers (7) comprise side parts (12) which are provided on the underside of the base plate (3), and the side parts (12) are connected to the main body of the car (6) via base plate shafts (13). [5] The box trolley according to claim 4, characterized by , that the base plate (3) is designed as a flat plate or in the shape of a J-sign with a lower arcuate structure and a straight upper end, and the side parts (12) are arranged on the lower arcuate structure of the base plate (3); base plate shafts (13) are provided in the middle of the side parts (12), the base plate shafts (13) are connected in front shaft bores (14) of the carriage plate (1); rotary locking leaves (15) are arranged at the rear ends of the base plate shafts (13), and the rotary locking leaves (15) release from or engage with ball projections (16) on the carriage plate (1) to ensure the fixing of the rotation angle of the base plate (3). [6] The box trolley according to claim 5, characterized by, that detent holes (17) or open detent grooves (18) are formed on the rotary locking leaves (15); the fixing of the rotation angle of the base plate (3) is achieved by engaging the detent holes (17) in the ball projections (16) or by sliding the open detent grooves (18) over the ball projections (16). [7] The box trolley according to claim 4 or 5, characterized by , that arc rings (19) are provided on the outer sides of the side parts (12), and stop blocks (20) are formed on the carriage plate (1); when the base plate (3) and the side parts (12) are rotated together up to an angle of 90° perpendicular to the carriage plate (1), the fixing is effected by the stop blocks (20). [8] The box trolley according to claim 3, characterized by, that the elastic support elements (11) comprise adjusting screws (21) and support springs (23), wherein the adjusting screws (21) are screwed onto positioning plates (22), and the positioning plates (22) are firmly mounted in the support slots (10); support springs (23) are attached to the tips of the adjusting screws (21), ends of the support springs (23) are firmly connected to the adjusting screws (21), and the other ends are inserted into spring bores (24) formed at the rear ends of the support sliding blocks (9). [9] The box trolley according to claim 4 or 5, characterized by, that wave-coil springs (25) are provided on the base plate shafts (13), the wave-coil springs (25) serve to maintain the base plate (3) in an upright position; locking claws (36) are formed on the upper side of the base plate (3), and after the base plate (3) rests flat on the trolley plate (1), the locking claws (36) engage on the trolley plate (1) to assist, together with a binding rope, in securing goods. [10] The box trolley according to claim 1, characterized by , that an armrest shaft rod (26) is provided on the underside of the armrest (2), the front and rear ends of the armrest shaft rod (26) are fixed to the carriage plate (1); the armrest (2) can be rotated about the armrest shaft rod (26) as the axis of rotation by an angle of at least 10°. [11] The box trolley according to claim 1 or 10, characterized by, that an armrest locking shaft (27) is provided on the underside of the armrest (2), at least one armrest locking core (28) is arranged on the front and / or the rear end of the armrest locking shaft (27); positioning plates (29) are provided opposite the armrest locking cores (28), the positioning plates (29) are fixed to the carriage plate (1), and armrest locking bores (30) are formed in the positioning plates (29); the armrest (2) is rotated about the armrest shaft rod (26) as the axis of rotation, and the angular positioning is achieved by engaging the armrest locking cores (28) in the armrest locking bores (30). [12] The box trolley according to claim 11, characterized by , that the positioning plates (29) are designed as semicircular plates, in whose arc positions of 0°, 90° and 180° an arm support locking bore (30) is formed. [13] The box trolley according to claim 11, characterized by, that the armrest locking shaft (27) comprises armrest locking cores (28), elastic pull bolts (31), a locking shaft tube (32) and a return spring (33); inside the locking shaft tube (32) armrest locking cores (28) are arranged at its front and / or rear end, ball rods (34) are provided at the outwardly directed tips of the armrest locking cores (28); the elastic pull bolts (31) are arranged on the ball rods (34) at the center positions of the locking shaft tube (32), the pull bolts (31) are returned to the center position of the locking shaft tube (32) by the return spring (33) after displacement; the elastic pull bolts (31) realize the switching process of the locking state by pulling the armrest locking cores (28). [14] The box trolley according to claim 13, characterized by, that displacement slots (35) are formed on the outer wall of the locking shaft tube (32); the elastic pull bolts (31) are displaced in the displacement slots (35) to control the locking and unlocking relationship between the armrest locking shaft (27) and the positioning plates (29).

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