Trolley

Abstract

The utility model discloses a trolley, which relates to the technical field of workshop transportation and comprises a walking frame, a cargo carrying platform, a stopping piece, a linkage structure and an elastic piece. Wherein the walking frame comprises an inlet side and an outlet side which are oppositely arranged, and the walking frame further comprises a vertical frame; the cargo carrying platform is mounted on the vertical frame; the height from the cargo carrying platform to the ground is gradually reduced from the inlet side to the outlet side; the linkage structure comprises a sliding rail and a sliding table, the sliding rail is arranged on the outlet side, the sliding rail is installed on the vertical frame and extends in the height direction of the vertical frame, the sliding table is installed on the sliding rail in a sliding mode, and the stopping piece is installed on the sliding table; the two ends of the elastic piece are installed on the vertical frame and the sliding table respectively, the elastic piece is used for keeping the sliding table at the first position, and when the sliding table is located at the first position, the stopping piece can stop the vehicle component from sliding off. Through the arrangement, manual carrying is not needed in the loading and unloading processes of the vehicle components, and therefore the carrying efficiency of the vehicle components can be remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of workshop transportation technology, and in particular to a trolley. Background Technology

[0002] During the transportation of automotive parts, the parts need to be placed on transport trolleys and then transported to other processes. The picking and handling of automotive parts is mainly done manually. For some large automotive parts, manual handling can be quite strenuous for workers, resulting in low efficiency in the transportation process.

[0003] Therefore, it is necessary to provide a trolley to solve or at least alleviate the aforementioned technical problems. Utility Model Content

[0004] The main purpose of this utility model is to propose a trolley that aims to solve the technical problem of low efficiency in the transportation of automotive parts.

[0005] To achieve the above objectives, this utility model proposes a trolley, comprising:

[0006] A traveling frame, the traveling frame including an inlet side and an outlet side arranged opposite to each other, the traveling frame also including a vertical frame;

[0007] A cargo platform is mounted on the upright, and the height of the cargo platform from the ground decreases from the inlet side to the outlet side.

[0008] Stopping components;

[0009] The linkage structure includes a slide rail and a slide table. The slide rail is located on the outlet side, is mounted on the upright and extends along the height direction of the upright, the slide table is slidably mounted on the slide rail, and the stop is mounted on the slide table.

[0010] An elastic element is provided, with its two ends respectively mounted on the upright and the slide. The elastic element is used to keep the slide in a first position. When the slide is in the first position, the stop can prevent vehicle parts from sliding off.

[0011] In one embodiment, the linkage structure further includes a rotating shaft, a connecting rod assembly, and a handle. The rotating shaft is rotatably connected to the upright frame around its own central axis. One end of the connecting rod assembly is connected to the rotating shaft and rotates synchronously with the rotating shaft. The other end of the connecting rod assembly is rotatably connected to the slide table. The handle is mounted on the connecting rod assembly.

[0012] In one embodiment, the linkage assembly includes a first linkage and a second linkage, one end of the first linkage is connected to the pivot and rotates synchronously with the pivot, and the other end of the first linkage is rotatably connected to the grip;

[0013] One end of the second connecting rod is rotatably mounted on the first connecting rod, and the other end is set toward the bottom end of the upright and rotatably mounted on the slide table.

[0014] In one embodiment, the linkage assembly further includes a limiting member, which is mounted on the slide and disposed on the side of the second linkage near the pivot shaft. The limiting member is used to limit the rotation angle of the second linkage toward the pivot shaft.

[0015] In one embodiment, the trolley includes at least two rows of cargo positions, and each row of cargo positions includes at least two layers of cargo platforms. The direction from the inlet side to the outlet side is defined as the first direction, and the direction perpendicular to the first direction in the same horizontal plane is defined as the second direction.

[0016] The uprights on both sides of the loading position along the second direction are equipped with slide rails and slide platforms. Each loading platform is provided with a stop member, and the two sides of the stop member are respectively installed on the two adjacent slide platforms.

[0017] The rotating shaft is installed through the upright frame along the second direction, and two sets of the connecting rod assemblies are respectively provided at both ends of the rotating shaft.

[0018] In one embodiment, the linkage structure further includes a plunger, the slide has a first through hole, and the part of the upright on which the slide is mounted has a second through hole that mates with the first through hole. The plunger is used to be pluggably inserted into the first through hole and the second through hole to fix the slide to the upright.

[0019] In one embodiment, the trolley includes a forward end and a rear end, and the traveling frame further includes a chassis, a traction member, a front wheel assembly, and a rear wheel assembly. The upright is mounted on the top surface of the chassis, and the front wheel assembly and the rear wheel assembly are both mounted on the side of the chassis away from the upright. The front wheel assembly is located near the forward end, and the rear wheel assembly is located near the rear end. The traction member is mounted on the front wheel assembly, and the front wheel assembly and the rear wheel assembly are used to support the movement of the chassis.

[0020] In one embodiment, the front wheel assembly includes a front wheel mounting base and two first travel wheels rotatably mounted on the front wheel mounting base; the rear wheel assembly includes a rear wheel mounting base and two second travel wheels fixedly mounted on the rear wheel mounting base; and the vehicle frame further includes a linkage rod, a locking assembly, and a locking assembly.

[0021] Both the front wheel mounting base and the rear wheel mounting base are rotatably mounted on the chassis. The two ends of the linkage rod are respectively hinged to the front wheel mounting base and the rear wheel mounting base. The locking assembly includes a rotating rod and a locking component. The rotating rod is rotatably mounted on the chassis, and the locking component is mounted on the rotating rod and rotates synchronously with the rotating rod.

[0022] The locking component is slidably mounted on the front wheel mounting bracket;

[0023] The trolley includes a first motion mode and a second motion mode;

[0024] In the first motion mode, the locking component is in a locked state to prevent the front wheel mount and the rear wheel mount from rotating, while the locking component does not restrict the first walking wheel from rotating.

[0025] In the second motion mode, the locking component is in the unlocked state, and the rotation of the front wheel mounting seat and the rear wheel mounting seat is not restricted. The locking component is connected to the first traveling wheel to prevent the first traveling wheel from rotating.

[0026] In one embodiment, the locking assembly further includes an auxiliary rod and a pull rod, one end of the auxiliary rod being connected to the rotating rod and rotating synchronously with the rotating rod, and the other end of the auxiliary rod being rotatably connected to the pull rod;

[0027] The front wheel mounting bracket has a first limiting groove, which cooperates with the locking member to restrict the rotation of the front wheel mounting bracket; and / or,

[0028] The rear wheel mounting base is provided with a second limiting groove, and there are two locking members. One of the locking members is configured to cooperate with the first limiting groove, and the other locking member is configured to cooperate with the second limiting groove and is used to restrict the rotation of the rear wheel mounting base.

[0029] Pushing or pulling the lever allows the locking assembly to switch between the locked state and the unlocked state.

[0030] In one embodiment, the locking assembly is slidably mounted on the side of the front wheel mount away from the chassis. The locking assembly includes a protruding rod. The first wheel includes a bracket and a roller. The roller is rotatably mounted on the bracket. The bracket is rotatably mounted on the front wheel mount. The bracket has an insertion hole. The protruding rod is used to be plugged into the insertion hole to prevent the bracket from rotating relative to the front wheel mount.

[0031] In the technical solution provided by this utility model, the trolley includes a traveling frame, a cargo platform, a stop, a linkage structure, and an elastic element. The traveling frame includes an inlet side and an outlet side arranged opposite each other, and also includes a vertical frame. The cargo platform is mounted on the vertical frame, and the height of the cargo platform from the ground decreases from the inlet side to the outlet side. The linkage structure includes a slide rail and a slide table. The slide rail is located on the outlet side, mounted on the vertical frame, and extends along the height direction of the vertical frame. The slide table is slidably mounted on the slide rail, and the stop is mounted on the slide table. The two ends of the elastic element are respectively mounted on the vertical frame and the slide table. The elastic element is used to hold the slide table in a first position. When the slide table is in the first position, the stop can prevent vehicle parts from sliding off. This design allows vehicle components to slide onto the loading platform under gravity, and the stop on the exit side prevents them from falling during transport. Once the trolley reaches its destination, the sliding platform overcomes the elastic force of the elastic components, causing the stop to release the vehicle components. Due to the tilted design of the loading platform, the vehicle components slide to a designated position outside the trolley under gravity. This configuration eliminates the need for manual handling during loading and unloading of vehicle components, significantly improving handling efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of an embodiment of the trolley provided by this utility model;

[0034] Figure 2 for Figure 1 A structural diagram from another perspective;

[0035] Figure 3 for Figure 1 Another structural diagram from a different perspective;

[0036] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0037] Figure 5 A partial structural schematic diagram of an embodiment of the trolley provided by this utility model;

[0038] Figure 6 for Figure 5 A structural diagram from another perspective;

[0039] Figure 7 for Figure 5 Another structural diagram from a different perspective;

[0040] Figure 8 A schematic diagram of the front wheel assembly, traction component, and locking assembly in one embodiment of the trolley provided by this utility model;

[0041] Figure 9 for Figure 8 A structural diagram from another perspective;

[0042] Figure 10 A schematic diagram of the rear wheel assembly in one embodiment of the trolley provided by this utility model;

[0043] Figure 11 for Figure 10 A structural diagram from another perspective.

[0044] Explanation of icon numbers:

[0045] 1000, carts;

[0046] 1. Walking frame; 11. Upright frame; 12. Chassis; 13. Front wheel assembly; 131. Front wheel mounting seat; 1311. First limiting groove; 1312. First sliding wheel; 132. First traveling wheel; 1321. Bracket; 1322. Roller; 14. Rear wheel assembly; 141. Rear wheel mounting seat; 1411. Second limiting groove; 1412. Second sliding wheel; 142. Second traveling wheel; 15. Linkage rod; 16. Locking assembly; 161. Rotating rod; 162. Locking component; 163. Auxiliary rod; 164. Pull rod; 17. Locking assembly; 171. Protruding rod; 172. Sliding frame; 173. Sliding rod; 174. Sliding seat; 175. Fixing pin; 176. First spring anchor; 177. Second spring anchor; 18. Traction component; 19. Guardrail;

[0047] 2. Cargo loading bay; 21. Cargo loading platform;

[0048] 3. Stop components;

[0049] 4. Linkage structure; 41. Slide rail; 42. Slide table; 43. Rotating shaft; 44. Linkage assembly; 441. First link; 442. Second link; 45. Grip; 46. Limiting component; 47. Plunger;

[0050] 5. Elastic components;

[0051] O, Exit side; I, Inlet side; X, First direction; Y, Second direction; F, Forward end; B, Tail end.

[0052] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] 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.

[0054] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0055] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0056] Currently, many production workshops rely on logistics carts or component transport vehicles to transport goods. Taking a vehicle production workshop as an example, the vehicle production line involves multiple processes, requiring transport trolleys to transport components needed for different processes to the relevant processing spaces. In this process, the transport trolley first needs to move to the warehouse shelf where the components are stored, move the components from the warehouse shelf to the loading position on the transport trolley, and then move the transport trolley to the space where the relevant process is located, and then unload the components onto the processing platform of that process.

[0057] In recent years, the application of intelligent technologies and policy support have brought new development opportunities to the vehicle industry. The market demand in the vehicle industry has been continuously growing. During the vehicle production process, the handling of parts is a crucial link, and the timely and accurate handling of parts directly affects the continuity and production efficiency of the production line. That is to say, the handling efficiency of parts will directly affect the production efficiency of vehicles. According to the applicant's observation and research, currently when transporting parts, mainly manpower is used in cooperation with tools such as gripping devices to move the parts from the warehouse shelves to the transport trolley, or from the transport trolley to the processing platform for related processes. With the expansion of production scale and the complexity of the production line, through the analysis of the production process, it is found that the existing handling methods not only increase the workload of employees but also affect the overall production efficiency of vehicles.

[0058] In view of this, the present utility model proposes a trolley to solve or at least alleviate the above technical problems.

[0059] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the trolley 1000 includes a traveling frame 1, a loading platform 21, a stop member 3, a linkage structure 4, and an elastic member 5. Among them, the traveling frame 1 includes an inlet side I and an outlet side O arranged opposite to each other, and the traveling frame 1 further includes a vertical frame 11; the loading platform 21 is installed on the vertical frame 11, and the height of the loading platform 21 from the ground decreases from the inlet side I to the outlet side O; the linkage structure 4 includes a slide rail 41 and a slide table 42, the slide rail 41 is arranged on the outlet side O, the slide rail 41 is installed on the vertical frame 11 and extends along the height direction of the vertical frame 11, the slide table 42 is slidably installed on the slide rail 41, and the stop member 3 is installed on the slide table 42; both ends of the elastic member 5 are respectively installed on the vertical frame 11 and the slide table 42, and the elastic member 5 is used to keep the slide table 42 in the first position. When the slide table 42 is in the first position, the stop member 3 can prevent the vehicle parts from slipping.

[0060] Specifically, the traveling frame​​​The cargo platform 21 is inclined from the inlet side I to the outlet side O, and multiple parallel sliding tracks are provided in the cargo platform 21. The sliding tracks extend from the inlet side I to the outlet side O. Each sliding track includes a guide groove and multiple rollers 1322 rotatably mounted on the guide groove. With this configuration, after the vehicle parts enter the cargo space from the inlet, under the action of the sliding tracks and the weight of the vehicle parts themselves, the vehicle parts will automatically slide to a position close to the outlet and be intercepted by the stop 3 within the cargo space. In this embodiment, the elastic element 5 includes a spring balancer, which is installed on the top of the stand 11. The hook of the spring balancer is connected to the slide table 42. The working principle of the spring balancer is to store and release energy through the elastic deformation of the spring to achieve force balance. The slide 42 includes a first position and a second position. When loading and transporting vehicle parts, the slide 42 is in the first position under the action of the spring balancer. At this time, the stop 3 installed on the slide 42 blocks the exit of the cargo space to prevent vehicle parts from sliding down. When it is necessary to unload vehicle parts, the slide 42 is slid away from the spring balancer, causing the slide 42 to reach the second position, thereby lowering the stop 3 and opening the exit of the cargo space. The vehicle parts can then slide down automatically without manual handling. It should be noted that the linkage structure 4 is used to raise and lower the stop 3 to prevent or allow vehicle parts to slide down. Due to the action of the spring balancer, the slide 42 can automatically return to the first position when no other external force is applied, at which point the stop 3 can prevent vehicle parts from sliding down. It should also be noted that the stop 3 and the linkage structure 4 are only installed on the outlet side O. The upright 11 includes multiple uprights and a crossbar installed on the top of the uprights. The slide rail 41 in the linkage structure 4 is installed on the uprights on the outlet side O. The uprights located between the outlet side O and the inlet side I, as well as the uprights on the inlet side I, do not need to be equipped with slide rail 41.

[0061] In the technical solution provided in this embodiment, the trolley 1000 includes a traveling frame 1, a cargo platform 21, a stop 3, a linkage structure 4, and an elastic member 5. The traveling frame 1 includes an inlet side I and an outlet side O arranged opposite to each other, and also includes a vertical frame 11. The cargo platform 21 is installed on the vertical frame 11, and the height of the cargo platform 21 from the ground decreases from the inlet side I to the outlet side O. The linkage structure 4 includes a slide rail 41 and a slide table 42. The slide rail 41 is located on the outlet side O, installed on the vertical frame 11, and extends along the height direction of the vertical frame 11. The slide table 42 is slidably installed on the slide rail 41, and the stop 3 is installed on the slide table 42. The two ends of the elastic member 5 are respectively installed on the vertical frame 11 and the slide table 42. The elastic member 5 is used to keep the slide table 42 in a first position. When the slide table 42 is in the first position, the stop 3 can prevent vehicle parts from sliding off. This configuration allows vehicle components to slide onto the loading platform 21 under gravity, and the stop 3 on the exit side O prevents them from falling during transport. After the trolley 1000 reaches its destination, the sliding table 42 overcomes the elastic force of the elastic member 5, causing the stop 3 to release the vehicle components. Due to the tilted design of the loading platform 21, the vehicle components slide to a designated position outside the trolley 1000 under gravity. This configuration eliminates the need for manual handling during loading and unloading of vehicle components, significantly improving handling efficiency.

[0062] Furthermore, in one embodiment of this utility model, the linkage structure 4 further includes a rotating shaft 43, a connecting rod assembly 44, and a handle 45. The rotating shaft 43 is rotatably connected to the upright frame 11 around its own central axis. One end of the connecting rod assembly 44 is connected to the rotating shaft 43 and rotates synchronously with the rotating shaft 43. The other end of the connecting rod assembly 44 is rotatably connected to the slide table 42. The handle 45 is mounted on the connecting rod assembly 44. Please refer to [link / reference]. Figures 2 to 4 The linkage structure 4 is connected to the upright frame 11 by a rotating shaft 43 around its central axis, allowing the shaft 43 to rotate flexibly. A connecting rod assembly 44 is then connected to the rotating shaft 43 for synchronous rotation, ensuring that the shaft 43 rotates synchronously with the connecting rod assembly 44. The other end of the connecting rod assembly 44 is rotatably connected to the slide table 42, allowing the slide table 42 to move with the connecting rod assembly 44. Simultaneously, a handle 45 is mounted on the connecting rod assembly 44, allowing the operator to conveniently control the movement of the slide table 42. The entire linkage structure 4 achieves coordinated operation between the upright frame 11, the rotating shaft 43, the connecting rod assembly 44, and the handle 45, greatly improving operational convenience and thus increasing the handling efficiency of the trolley 1000.

[0063] Specifically, please refer to Figure 4In one embodiment of the present invention, the linkage assembly 44 includes a first linkage 441 and a second linkage 442. One end of the first linkage 441 is connected to the rotating shaft 43 and rotates synchronously with the rotating shaft 43. The other end of the first linkage 441 is rotatably connected to the handle 45. One end of the second linkage 442 is rotatably mounted on the first linkage 441, and the other end is set towards the bottom end of the stand 11 and rotatably mounted on the slide table 42. The connection point between the second link 442 and the first link 441 is located between the pivot 43 and the handle 45. When the operator holds the handle 45 and presses it towards the bottom of the stand 11, the first link 441 can rotate around the central axis of the pivot 43, thereby applying pressure to the second link 442. This causes the second link 442 to slide the slide table 42 towards the bottom of the stand 11. Since one end of the second link 442 is rotatably connected to the first link 441 and the other end is rotatably connected to the slide table 42, the angles of the first link 441 and the second link 442 can adaptively change during the sliding of the slide table 42 towards the bottom of the stand 11, thereby increasing the travel range of the slide table 42.

[0064] Furthermore, in one embodiment of this utility model, the connecting rod assembly 44 further includes a limiting member 46. The limiting member 46 is mounted on the slide table 42 and is disposed on the side of the second connecting rod 442 near the rotating shaft 43. The limiting member 46 is used to limit the rotation angle of the second connecting rod 442 toward the rotating shaft 43. Please refer to [link to relevant documentation]. Figure 4 The limiting component 46 is installed close to the rotating shaft 43, which limits the rotation angle of the second link 442 toward the rotating shaft 43. This ensures that the second link 442 will not rotate excessively during operation, effectively preventing jamming between the first link 441 and the second link 442 or difficulty in accurately transmitting external force to the slide table 42 due to excessive rotation, thus ensuring the stability and reliability of the link assembly 44.

[0065] Please see Figure 1 and Figure 2In one embodiment of this utility model, the trolley 1000 includes at least two rows of loading positions 2, each row of loading positions 2 including at least two layers of loading platforms 21. The direction from the inlet side I to the outlet side O is defined as the first direction X, and the direction perpendicular to the first direction X in the same horizontal plane is defined as the second direction Y. Along the second direction Y, the uprights 11 on both sides of the loading position 2 are equipped with slide rails 41 and slide tables 42. Each loading platform 21 is correspondingly provided with a stop 3, and the two sides of the stop 3 are respectively installed on its two adjacent slide tables 42. A rotating shaft 43 is installed through the uprights 11 along the second direction Y, and two sets of connecting rod assemblies 44 are respectively provided at both ends of the rotating shaft 43. More specifically, the trolley 1000 provided in this embodiment includes two rows of loading positions 2, each row of loading positions 2 including three layers of loading platforms 21. That is, the trolley 1000 in this embodiment includes six loading platforms 21, enabling the transportation of six vehicle parts at a time. This design can significantly improve the transportation efficiency of the trolley 1000. It should be noted that on the exit side O of the traveling frame 1, the upright 11 is equipped with a slide rail 41 and a slide table 42. A stop 3 is provided between two adjacent slide tables 42, so that the stop 3 can rise and fall synchronously with the slide tables 42 on both sides. This arrangement avoids the stop 3 from being too long, resulting in insufficient rigidity and affecting the stop 3's function of preventing the vehicle parts from sliding. At the same time, it can improve the service life of the stop 3. Furthermore, the second direction Y coincides with the forward direction of the trolley 1000. A rotating shaft 43 is installed along the second direction Y on the upright frame 11, and connecting rod assemblies 44 are installed at both ends of the rotating shaft 43. This means that connecting rod assemblies 44 are installed on both sides of the traveling frame 1 parallel to the second direction Y, while the handle 45 is only located on one side of the trolley 1000. Under the action of the rotating shaft 43, the two connecting rod assemblies 44 are linked, simultaneously controlling the raising and lowering of the slides 42 on both sides of the trolley 1000. The operator only needs to operate the handle 45 to control the synchronous raising and lowering of the slides 42 on both sides of the trolley 1000, thus making the raising and lowering process of the stop pieces 3 smoother. Through the above configuration, the operator only needs to operate the handle 45 to achieve the synchronous raising and lowering of the six stop pieces 3, thereby improving the efficiency of unloading vehicle parts. At the same time, the synchronous raising and lowering of the slides 42 improves the stability of the entire system and reduces safety hazards caused by inconsistent operation, such as one slide 42 lowering while the other does not, thus avoiding potential accidents.

[0066] In one embodiment of this utility model, the linkage structure 4 further includes a plunger 47. The slide 42 has a first through hole, and the part of the support 11 where the slide 42 is mounted has a second through hole that mates with the first through hole. The plunger 47 is used to be pluggably inserted into the first through hole and the second through hole to fix the slide 42 to the support 11. Please refer to the following for details. Figure 2 and Figure 4The plunger 47 includes either a pull-out pin or an indexing pin. In this embodiment, for ease of use, the plunger 47 uses an L-shaped handle indexing pin, which includes a housing, a pin that can extend and retract within the housing, and a spring. The housing is detachably installed in the first through hole. By rotating the L-shaped handle, the pin can be inserted into or removed from the second through hole, and the spring can automatically reset the pin. It should be noted that in this embodiment, there are two second through holes, which correspond to the first and second positions of the slide 42, respectively. When unloading vehicle parts, rotating the L-shaped handle in the L-shaped handle indexing pin causes the pin to exit the second through hole corresponding to the first position of the slide 42. Pushing the handle 45 in the linkage structure 4 moves the slide 42 to the second position. At this time, the pin aligns with the second through hole corresponding to the second position. Under the action of the spring inside the L-shaped handle indexing pin, the pin automatically resets, keeping the slide 42 in the second position. At this time, the vehicle parts can automatically slide off the cargo platform 21. After all vehicle components have slid off the loading platform 21, rotating the L-shaped handle causes the slide 42 to slide to the first position under the action of the elastic element 5. The pin automatically resets after aligning with the second through hole corresponding to the first position, keeping the slide 42 in the first position. It should be noted that by setting the L-shaped handle indexing pin, the operator does not need to maintain constant contact with the handle 45 during the unloading process of vehicle components, and the stop 3 is prevented from moving, thus ensuring safety during unloading. Furthermore, the elastic element 5 keeps the slide 42 in the first position, and the L-shaped handle indexing pin prevents the stop 3 from shaking during the handling of vehicle components. In other words, the L-shaped handle indexing pin and the elastic element 5 work together to stably keep the slide 42 in the first position. During transportation, the L-shaped handle indexing pin serves as a safety reserve to ensure the slide 42 remains stably in the first position.

[0067] In one embodiment of this utility model, the trolley 1000 includes a forward end F and a rear end B. The traveling frame 1 also includes a chassis 12, a front wheel assembly 13, and a rear wheel assembly 14. The upright frame 11 is mounted on the top surface of the chassis 12. The front wheel assembly 13 and the rear wheel assembly 14 are both mounted on the side of the chassis 12 away from the upright frame 11, with the front wheel assembly 13 positioned closer to the forward end F and the rear wheel assembly 14 positioned closer to the rear end B. The front wheel assembly 13 and the rear wheel assembly 14 are used to support the movement of the chassis 12. Please refer to the following for details. Figure 3In this embodiment, the forward end F of the trolley 1000 is connected to an external tractor or to the rear end B of another trolley 1000 in this embodiment. At the forward end F, the traveling frame 1 also includes a traction member 18 and a guardrail 19. The traction member 18 is connected to the front wheel assembly 13, and the guardrail 19 is installed on the chassis 12 near the forward end F. The traction member 18 can be connected to the tractor or to the rear end B of another trolley 1000 to provide power to the trolley 1000 and, with the support of the front wheel assembly 13 and the rear wheel assembly 14, allow the trolley 1000 to move as a whole. The guardrail 19 is used for manually pushing and pulling the trolley 1000, facilitating operator operation. This configuration allows the trolley 1000 to be moved in multiple ways, improving the flexibility of its use.

[0068] Further, in one embodiment of this utility model, the front wheel assembly 13 includes a front wheel mounting seat 131 and two first wheels 132 rotatably mounted on the front wheel mounting seat 131; the rear wheel assembly 14 includes a rear wheel mounting seat 141 and two second wheels 142 fixedly mounted on the rear wheel mounting seat 141; the chassis 1 also includes a linkage rod 15, a locking assembly 16, and a locking assembly 17; both the front wheel mounting seat 131 and the rear wheel mounting seat 141 are rotatably mounted on the chassis 12; the two ends of the linkage rod 15 are respectively hinged to the front wheel mounting seat 131 and the rear wheel mounting seat 141; the locking assembly 16 includes a rotating rod 161 and a locking element 162; the rotating rod 161 is rotatably mounted on the chassis 12. 2. The locking component 162 is installed on the rotating rod 161 and rotates synchronously with the rotating rod 161; the locking component 17 is slidably installed on the front wheel mounting seat 131; the trolley 1000 includes a first movement mode and a second movement mode; in the first movement mode, the locking component 16 is in a locked state to prevent the front wheel mounting seat 131 and the rear wheel mounting seat 141 from rotating, and the locking component 17 does not restrict the first traveling wheel 132 from rotating; in the second movement mode, the locking component 16 is in an unlocked state to not restrict the front wheel mounting seat 131 and the rear wheel mounting seat 141 from rotating, and the locking component 17 is connected to the first traveling wheel 132 to prevent the first traveling wheel 132 from rotating.

[0069] Please see Figures 5 to 7 The first traveling wheel 132 includes a swivel caster, which is rotatably mounted on the side of the front wheel mounting seat 131 away from the chassis 12; the second traveling wheel 142 includes a fixed caster, which is oriented and mounted on the side of the rear wheel mounting seat 141 away from the chassis 12. Both the first traveling wheel 132 and the second traveling wheel 142 are in direct contact with the ground and are used to support the overall movement of the trolley 1000. Please refer to [link / reference]. Figure 6 and Figure 7In the diagram, the trolley 1000 is in the second movement mode. At this mode, the locking component 16 does not contact the front wheel mounting seat 131 or the rear wheel mounting seat 141. The locking component 17 is connected to the first traveling wheel 132, preventing the first traveling wheel 132 from rotating relative to the front wheel mounting seat 131. This ensures that the first traveling wheel 132 and the front wheel mounting seat 131 rotate synchronously, and the locking component 17 rotates synchronously with the front wheel mounting seat 131. The traction component 18 is installed on the front wheel mounting seat 131. Under the action of the traction component 18, the front wheel mounting seat 131 can rotate. The front wheel mounting seat 131 and the rear wheel mounting seat 141 are connected by the linkage rod 15, ensuring that the front wheel mounting seat 131 and the rear wheel mounting seat 141 rotate synchronously. In the second movement mode, the first and second traveling components can turn synchronously, thereby reducing the turning radius of the trolley 1000 and facilitating turning in narrow spaces.

[0070] Rotating the rotating rod 161 in the locking assembly 16 causes the locking member 162 to contact the front wheel mounting seat 131 and the rear wheel mounting seat 141, thereby restricting the rotation of the front wheel mounting seat 131 and the rear wheel mounting seat 141. At the same time, the locking assembly 17 slides forward at the forward end F, making it contact and connect with the first traveling member. At this time, the trolley 1000 enters the first movement mode. In this mode, the first traveling wheel 132 can rotate relative to the front wheel mounting seat 131, while the second traveling wheel 142 remains oriented, and neither the front wheel mounting seat 131 nor the rear wheel mounting seat 141 can rotate. This mode is applied when the trolley 1000 is running in a straight line or has a small turning radius, avoiding the trolley 1000 from shaking due to the omnidirectional rotation of both the first traveling wheel 132 and the second traveling wheel 142, thus improving the stability of the trolley 1000 when moving.

[0071] Furthermore, in one embodiment of this utility model, the locking assembly 16 further includes an auxiliary rod 163 and a pull rod 164. One end of the auxiliary rod 163 is connected to the rotating rod 161 and rotates synchronously with the rotating rod 161, while the other end of the auxiliary rod 163 is rotatably connected to the pull rod 164. The front wheel mounting seat 131 has a first limiting groove 1311, which cooperates with the locking member 162 to restrict the rotation of the front wheel mounting seat 131. And / or, the rear wheel mounting seat 141 has a second limiting groove 1411. There are two locking members 162, one of which cooperates with the first limiting groove 1311, and the other cooperates with the second limiting groove 1411 to restrict the rotation of the rear wheel mounting seat 141. The push-pull pull rod 164 allows the locking assembly 16 to switch between a locked state and an unlocked state. Please refer to [link / reference]. Figure 5The rotating rod 161 in the locking assembly 16 is rotatably mounted on the side of the chassis 12 closest to the ground, and extends along the second direction Y. In one embodiment, there is one locking member 162, and a first limiting groove 1311 is provided in the front wheel mounting seat 131 to cooperate with the locking member 162. The locking member 162 cooperates with the first limiting groove 1311 to restrict the rotation of the front wheel mounting seat 131. In another embodiment, there is one locking member 162, and a second limiting groove 1411 is provided in the rear wheel mounting seat 141 to cooperate with the locking member 162. The locking member 162 cooperates with the second limiting groove 1411 to restrict the rotation of the rear wheel mounting seat 141. Obviously, due to the presence of the linkage rod 15, when there is only one locking member 162, the rotation of both the front wheel mounting seat 131 and the rear wheel mounting seat 141 can be restricted simultaneously. In this embodiment, please refer to... Figure 5 , Figure 9 and Figure 11 There are two locking components 162. The front wheel mounting base 131 has a first limiting groove 1311, and the rear wheel mounting base 141 has a second limiting groove 1411. The two locking components 162 are spaced apart on the rotating rod 161 and are respectively engaged with the first limiting groove 1311 and the second limiting groove 1411. The end of the rotating rod 161 near the forward end F is connected to the auxiliary rod 163, and the other end of the auxiliary rod 163 is connected to the pull rod 164. The pull rod 164 is slidably mounted on the guardrail 19 for the operator to operate. By pushing or pulling the pull rod 164, the operator can make the auxiliary rod 163 drive the rotating rod 161 to rotate, thereby allowing the locking assembly 16 to switch between a locked state and an unlocked state. This design greatly increases the convenience of operation.

[0072] In one embodiment of this utility model, the locking component 17 is slidably mounted on the side of the front wheel mounting seat 131 away from the chassis 12. The locking component 17 includes a protruding rod 171. The first traveling wheel 132 includes a bracket 1321 and a roller 1322. The roller 1322 is rotatably mounted on the bracket 1321. The bracket 1321 is rotatably mounted on the front wheel mounting seat 131. The bracket 1321 has an insertion hole. The protruding rod 171 is used to be plugged into the insertion hole to prevent the bracket 1321 from rotating relative to the front wheel mounting seat 131. Please refer to [link to previous document]. Figures 7 to 9The front wheel mounting base 131 is equipped with a first traveling component, first sliding wheels 1312, a traction component 18, and a locking assembly 17. Four first sliding wheels 1312 are provided, spaced apart on the front wheel mounting base 131, and the rolling direction of the first sliding wheels 1312 is parallel to the second direction Y. The first sliding wheels 1312 are used to reduce friction between the front wheel mounting base 131 and the chassis 12, making the rotation of the front wheel mounting base 131 smoother. The traction component 18 is fixedly mounted on the front wheel mounting base 131. In the second movement mode of the trolley 1000, when a tractor or other trolley 1000 providing traction force to the trolley 1000 drives the traction component 18 to turn, the front wheel mounting base 131 rotates along with the rotation of the traction component 18. The locking assembly 17 includes a protruding rod 171, a sliding bracket 172, a sliding rod 173, a sliding seat 174, a fixing pin 175, a first spring anchor 176, a second spring anchor 177, and a tension spring (not shown in the figure). The sliding seat 174 is installed on the front wheel mounting seat 131. There are four sliding seats 174. Each sliding seat 174 has a sliding hole inside for the sliding rod 173 to pass through. In this embodiment, two sliding seats 174 form a group, and the two groups of sliding seats 174 are arranged in parallel. The installation direction of the sliding hole is the same as the second direction Y. Each group of sliding seats 174 has a sliding rod 173 slidably installed. The length of the sliding rod 173 is greater than the distance between the two sliding seats 174 in each group of sliding seats 174, so that the sliding rod 173 can slide between the two sliding seats 174. The sliding frame 172 is vertically mounted on the ends of the two sliding rods 173 near the traction member 18. By pushing and pulling the sliding frame 172, the two sliding rods 173 can slide in the sliding seat 174. Two protruding rods 171 are provided on both sides of the sliding frame 172. The mounting positions of the protruding rods 171 on the sliding frame 172 correspond to the mounting positions of the brackets 1321 in the first traveling wheel 132. Specifically, the first traveling wheel 132 includes brackets 1321. Along with roller 1322, bracket 1321 is rotatably mounted on front wheel mounting seat 131. Bracket 1321 has an insertion hole for engaging with protruding rod 171 to prevent rotation. Sliding bracket 172 drives protruding rod 171 to slide on front wheel mounting seat 131, allowing protruding rod 171 to insert into or retract from the insertion hole. When protruding rod 171 is inserted into the insertion hole, bracket 1321 cannot rotate; when protruding rod 171 is retracted, bracket 1321 can rotate. A fixing pin 175 is provided on sliding bracket 172 near traction member 18. Traction member 18 has a fixing hole. When fixing pin 175 is inserted into the fixing hole, sliding bracket 172 is fixed to traction member 18, and protruding rod 171 does not contact bracket 1321. Fixing pin 175 includes either a pull-out pin or an indexing pin. Please refer to [link to relevant documentation]. Figure 9In this embodiment, two fixing pins 175 are provided, respectively located on both sides of the sliding frame 172. Correspondingly, two fixing holes are provided in the traction member 18, with each fixing pin 175 corresponding to one of the fixing holes. Please refer to [link / reference]. Figure 9 In this embodiment, a first spring anchor 176 is provided on the sliding frame 172, and a second spring anchor 177 is provided on the front wheel mounting seat 131. The two ends of the tension spring are respectively connected to the first spring anchor 176 and the second spring anchor 177. This arrangement allows the sliding frame 172 to move towards the tail end B of the trolley 1000 under the action of the tension spring when the fixing pin 175 is disengaged from the fixing hole, thereby automatically driving the protruding rod 171 to be inserted into the insertion hole of the bracket 1321, which improves the convenience of operation for the operator.

[0073] Please see Figure 10 and Figure 11 In one embodiment of this utility model, the components installed on the rear wheel mounting seat 141 include a second traveling wheel 142 and a second sliding wheel 1412. There are four second sliding wheels 1412, which are installed at intervals on the rear wheel mounting seat 141. The rolling direction of the second sliding wheels 1412 is parallel to the rolling direction of the first sliding wheel 1312. The second sliding wheels 1412 can roll on the bottom surface of the chassis 12 to reduce the friction between the rear wheel mounting seat 141 and the chassis 12, so that the rotation of the rear wheel mounting seat 141 is smoother.

[0074] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A trolley, characterized in that, include: A traveling frame, the traveling frame including an inlet side and an outlet side arranged opposite to each other, the traveling frame also including a vertical frame; A cargo platform is mounted on the upright, and the height of the cargo platform from the ground decreases from the inlet side to the outlet side. Stopping components; The linkage structure includes a slide rail and a slide table. The slide rail is located on the outlet side, is mounted on the upright and extends along the height direction of the upright, the slide table is slidably mounted on the slide rail, and the stop is mounted on the slide table. An elastic element is provided, with its two ends respectively mounted on the upright and the slide. The elastic element is used to keep the slide in a first position. When the slide is in the first position, the stop can prevent vehicle parts from sliding off.

2. The trolley as described in claim 1, characterized in that, The linkage structure also includes a rotating shaft, a connecting rod assembly, and a handle. The rotating shaft is rotatably connected to the upright frame around its own central axis. One end of the connecting rod assembly is connected to the rotating shaft and rotates synchronously with the rotating shaft. The other end of the connecting rod assembly is rotatably connected to the slide table. The handle is installed on the connecting rod assembly.

3. The trolley as described in claim 2, characterized in that, The linkage assembly includes a first linkage and a second linkage. One end of the first linkage is connected to the rotating shaft and rotates synchronously with the rotating shaft. The other end of the first linkage is rotatably connected to the grip. One end of the second connecting rod is rotatably mounted on the first connecting rod, and the other end is set toward the bottom end of the upright and rotatably mounted on the slide table.

4. The trolley as described in claim 3, characterized in that, The linkage assembly further includes a limiting member, which is mounted on the slide and disposed on the side of the second linkage near the rotating shaft. The limiting member is used to limit the rotation angle of the second linkage toward the rotating shaft.

5. The trolley as described in claim 4, characterized in that, The trolley includes at least two rows of cargo positions, and each row of cargo positions includes at least two layers of cargo platforms. The direction from the inlet side to the outlet side is defined as the first direction, and the direction perpendicular to the first direction in the same horizontal plane is defined as the second direction. The uprights on both sides of the loading position along the second direction are equipped with slide rails and slide platforms. Each loading platform is provided with a stop member, and the two sides of the stop member are respectively installed on the two adjacent slide platforms. The rotating shaft is installed through the upright frame along the second direction, and two sets of the connecting rod assemblies are respectively provided at both ends of the rotating shaft.

6. The trolley as described in claim 1, characterized in that, The linkage structure also includes a plunger. The slide has a first through hole, and the part of the upright where the slide is mounted has a second through hole that mates with the first through hole. The plunger is used to be pluggably inserted into the first through hole and the second through hole to fix the slide to the upright.

7. The trolley as described in any one of claims 1 to 6, characterized in that, The trolley includes a forward end and a rear end. The traveling frame also includes a chassis, a traction component, a front wheel assembly, and a rear wheel assembly. The upright is mounted on the top surface of the chassis. The front wheel assembly and the rear wheel assembly are both mounted on the side of the chassis away from the upright, with the front wheel assembly positioned closer to the forward end and the rear wheel assembly positioned closer to the rear end. The traction component is mounted on the front wheel assembly. The front wheel assembly and the rear wheel assembly are used to support the movement of the chassis.

8. The trolley as described in claim 7, characterized in that, The front wheel assembly includes a front wheel mounting base and two first travel wheels rotatably mounted on the front wheel mounting base; the rear wheel assembly includes a rear wheel mounting base and two second travel wheels fixedly mounted on the rear wheel mounting base; the vehicle frame also includes a linkage rod, a locking assembly, and a locking assembly. Both the front wheel mounting base and the rear wheel mounting base are rotatably mounted on the chassis. The two ends of the linkage rod are respectively hinged to the front wheel mounting base and the rear wheel mounting base. The locking assembly includes a rotating rod and a locking component. The rotating rod is rotatably mounted on the chassis, and the locking component is mounted on the rotating rod and rotates synchronously with the rotating rod. The locking component is slidably mounted on the front wheel mounting bracket; The trolley includes a first motion mode and a second motion mode; In the first motion mode, the locking component is in a locked state to prevent the front wheel mount and the rear wheel mount from rotating, while the locking component does not restrict the first walking wheel from rotating. In the second motion mode, the locking component is in the unlocked state, and the rotation of the front wheel mounting seat and the rear wheel mounting seat is not restricted. The locking component is connected to the first traveling wheel to prevent the first traveling wheel from rotating.

9. The trolley as described in claim 8, characterized in that, The locking assembly further includes an auxiliary rod and a pull rod. One end of the auxiliary rod is connected to the rotating rod and rotates synchronously with the rotating rod, and the other end of the auxiliary rod is rotatably connected to the pull rod. The front wheel mounting bracket has a first limiting groove, which cooperates with the locking member to restrict the rotation of the front wheel mounting bracket; and / or, The rear wheel mounting base is provided with a second limiting groove, and there are two locking members. One of the locking members is configured to cooperate with the first limiting groove, and the other locking member is configured to cooperate with the second limiting groove and is used to restrict the rotation of the rear wheel mounting base. Pushing or pulling the lever allows the locking assembly to switch between the locked state and the unlocked state.

10. The trolley as described in claim 8, characterized in that, The locking assembly is slidably mounted on the side of the front wheel mount away from the chassis. The locking assembly includes a protruding rod. The first wheel includes a bracket and a roller. The roller is rotatably mounted on the bracket. The bracket is rotatably mounted on the front wheel mount. The bracket has an insertion hole. The protruding rod is used to be plugged into the insertion hole to prevent the bracket from rotating relative to the front wheel mount.

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