A hand trolley and C-shaped track matching structure

Abstract

The present application relates to a kind of hand trolley and the cooperation structure of C-shaped track.The present application includes C-shaped track, including the fixed part of upper side and the C-shaped suspension part with two support edges connected with fixed part, and the slot of extending along the length direction of C-shaped track is formed between two support edges;Carriage;Traveling mechanism, including the guide wheel connected to carriage, two suspension wheel assemblies and drive wheel assembly, guide wheel vertically penetrates in slot, suspension wheel assembly includes a pair of suspension wheels with two support edges contact, slot bottom end forms traveling track, and drive wheel assembly includes the drive wheel with traveling track contact;Adjusting assembly, it is set between carriage and suspension wheel assembly, to adjust the contact force between suspension wheel and support edge;Hand pulling mechanism, it is set in carriage, including the driving disc connected with drive wheel and the pull rope connected to driving disc, by pulling pull rope to drive drive wheel rotation.The present application improves the driving stability of trolley on track.

Description

Technical Field

[0001] This invention relates to the field of track trolley technology, and in particular to a matching structure between a hand-pulled trolley and a C-shaped track. Background Technology

[0002] Hand-operated trolleys are a very common tool. They typically work in conjunction with rail systems to enable efficient and rapid handling of goods. In such applications, C-rails are widely used due to their structural stability and ease of installation. Traditional hand-operated trolley designs usually include two suspended wheels, suspended from a C-rail for movement.

[0003] Traditional hand-operated trolleys with C-track structures have the following problems: First, when the load changes, the contact between the suspended trolley and the C-track may be uneven, potentially leading to excessive friction between the contact surfaces. This makes pushing and pulling the trolley on the track more difficult, increasing operational complexity and accelerating wear on the wheels and track. Second, if the suspended wheels do not make complete and correct contact with the C-track, the trolley may veer off course, potentially even derailing. This deviation not only affects the normal handling of materials but also causes safety hazards such as chain breakage and C-track deformation, posing potential safety risks. Furthermore, the traditional trolley structure is complex, involving multiple components and intricate mechanical assembly, making maintenance and disassembly cumbersome and prone to errors. This increases the workload of workers and maintenance costs. Summary of the Invention

[0004] Therefore, the present invention provides a matching structure between a hand-operated trolley and a C-shaped track, which improves the contact stability between the wheels and the track, and enhances the stability and safety of the trolley's movement.

[0005] To solve the above-mentioned technical problems, the present invention provides a mating structure for a hand-operated trolley and a C-shaped track, comprising:

[0006] The C-shaped track includes a fixed part on the upper side and a C-shaped suspension part connected to the fixed part and having two supporting sides, with a slot extending along the length direction of the C-shaped track formed between the two supporting sides.

[0007] Frame;

[0008] The walking mechanism includes a guide wheel connected to the frame, two suspension wheel assemblies, and a drive wheel assembly located between the two suspension wheel assemblies. The guide wheel passes vertically through the slot. The suspension wheel assembly includes a pair of suspension wheels that contact the two support edges. The bottom end of the slot forms a walking track. The drive wheel assembly includes a drive wheel that contacts the walking track.

[0009] An adjustment component is disposed between the vehicle frame and the suspension wheel assembly to adjust the contact force between the suspension wheel and the support edge;

[0010] A hand-operated mechanism is provided on the vehicle frame, including a drive disc connected to the drive wheel and a pull rope connected to the drive disc, which drives the drive wheel to rotate by pulling the pull rope.

[0011] In one embodiment of the present invention, each of the suspension wheel assemblies includes a connecting seat and a connecting shaft that extends laterally through the connecting seat. Bearings are provided at both ends of the connecting seat. The two suspension wheels are rotatably connected to the two ends of the connecting shaft through the bearings, and the two guide wheels are bolted to the two ends of the connecting seat longitudinally.

[0012] In one embodiment of the present invention, the frame includes two horizontally arranged and connected frame vertical plates and a frame bottom plate connected between the two frame vertical plates.

[0013] In one embodiment of the present invention, it further includes two drive mounting plates and a transverse connecting rod. The two drive mounting plates are respectively located on the outside of the frame vertical plate. The transverse connecting rod passes through the two drive mounting plates and the two frame vertical plates. Bolt assemblies are connected to both ends of the transverse connecting rod. The drive mounting plates are used to install the drive mechanism. Multiple hanging plates are snapped between the side walls at the bottom of each of the two frame vertical plates.

[0014] In one embodiment of the present invention, each of the suspension wheel assemblies further includes a vertical connecting rod, one end of which is connected to the middle of the connecting seat, and the other end is connected to the chassis base plate by a cotter pin and a hexagonal open nut.

[0015] In one embodiment of the present invention, a first support plate is also connected between the two frame vertical plates, and the vertical connecting rod of one of the suspension wheel assemblies passes through the first support plate and is connected to a fixing nut that abuts against the bottom end of the first support plate.

[0016] In one embodiment of the present invention, a second support plate is connected between the two frame vertical plates. The adjustment assembly includes a disc spring of the vertical connecting rod sleeved in another suspension wheel assembly and an adjustment nut assembly. The adjustment nut assembly includes a plurality of stacked adjustment nuts. The elastic component abuts against the bottom end of the second support plate. The adjustment nut assembly abuts against the upper end of the frame bottom plate and the disc spring.

[0017] In one embodiment of the present invention, the drive wheel assembly includes a rotating shaft rotatably connected to the frame, the drive wheel is connected to the rotating shaft, the hand-pulling mechanism further includes a drive shaft rotatably connected to the drive mounting plate, the drive shaft is connected to the central through hole of the drive disc by a key, the end of the drive shaft is provided with a drive gear, and the end of the rotating shaft is provided with a driven gear that cooperates with the drive gear.

[0018] In one embodiment of the present invention, the hand-pulling mechanism further includes a guide assembly rotatably connected to the frame, and a drive groove is provided along the outer edge of the drive disc. The guide assembly includes a guide seat and pressure wheels rotatably connected to the guide seat and located on both sides of the drive disc. The pull rope has a head-to-tail structure, and one end of the pull rope passes between one of the pressure wheels and the drive disc and through the drive groove, and then passes between the other pressure wheel and the drive disc.

[0019] In one embodiment of the present invention, a fixing plate is further provided between the drive disk and the guide seat. The drive disk has locking holes distributed circumferentially on its end face. One end of the fixing plate is connected to the guide seat, and the other end is connected to a locking nut that engages with the locking stud. The locking stud can extend into the locking hole to prevent the drive disk from rotating.

[0020] The technical solution of the present invention has the following advantages over the prior art:

[0021] The present invention discloses a cooperative structure between a hand-operated trolley and a C-shaped track. The structural design of the C-shaped track can improve the stability of the trolley on the track, prevent deviation and sideslip, and improve operational stability. The hand-operated trolley adopts a structure of two suspension wheel assemblies and a drive wheel assembly, which ensures that the trolley's driving wheels can still accurately contact the C-shaped track when the center of gravity of the trolley shifts, reducing the friction between the track and the wheels, and improving the stability and safety of the trolley's movement.

[0022] The hand-operated trolley and the C-shaped track have an added adjustment component, which can adjust the contact force between the suspension wheel and the support edge. By adjusting this contact force, it can adapt to the operating requirements under different loads, ensuring the stability and service life of the vehicle during operation. By setting guide wheels, the trolley can be made more stable on the C-shaped track, preventing it from deviating and skidding.

[0023] The hand-operated mechanism of this trolley and C-shaped track uses a drive disc, drive shaft, and pull rope to work together. Pulling the rope drives the drive wheel to rotate, making operation simple and convenient. The guide component and drive groove design allow the pull rope to pass smoothly between the pressure wheel and the drive disc, providing a stable pulling effect. The locking stud and fixing plate design prevents the drive disc from rotating accidentally when the trolley is not in operation, ensuring operational safety. Attached Figure Description

[0024] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] Fig. 1 This is a schematic diagram of the overall structure of the hand-pulled cart of the present invention.

[0026] Fig. 2 This is a schematic diagram of the overall structure of the hand-pulled cart of the present invention from another perspective (pulling rope omitted).

[0027] Fig. 3 This is a schematic diagram of the axonal structure of the hand-pulled trolley and the C-shaped track of the present invention.

[0028] Fig. 4 This is a front view schematic diagram of the hand-pulled trolley and C-shaped track of the present invention.

[0029] Explanation of reference numerals in the instruction manual:

[0030] 1. Frame; 11. Frame vertical plate; 12. Frame base plate; 13. Drive mount plate; 14. Lateral connecting rod; 15. Hanger plate;

[0031] 2. Suspension wheel assembly; 21. Suspension wheel; 22. Connecting seat; 23. Connecting shaft; 24. Guide wheel; 25. Vertical connecting rod; 26. Hexagonal open nut; 27. First support plate; 28. Second support plate;

[0032] 3. Drive wheel assembly; 31. Drive wheel; 32. Rotating shaft; 33. Driven gear;

[0033] 4. C-shaped track; 40. Fixing part; 41. Supporting edge; 42. Groove; 43. Traveling track;

[0034] 5. Adjustment assembly; 51. Disc spring; 52. Adjustment nut assembly;

[0035] 6. Hand-operated mechanism; 61. Drive disc; 611. Drive groove; 612. Locking hole; 62. Pull rope; 63. Drive shaft; 64. Drive gear; 65. Guide seat; 66. Pressure wheel; 67. Locking stud; 68. Locking nut; 69. Fixing plate. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0037] In this invention, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this invention, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0038] In this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number. In the description of this invention, the terms "first" and "second" are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention based on the specific content of the technical solution.

[0040] Reference Figs. 1 to 4 As shown, the present invention provides a cooperative structure for a hand-operated trolley and a C-shaped track, comprising:

[0041] The C-shaped track 4 includes a fixing part 40 on the upper side and a C-shaped suspension part connected to the fixing part 40 and having two supporting edges 41. A slot 42 extending along the length direction of the C-shaped track 4 is formed between the two supporting edges 41.

[0042] Frame 1;

[0043] The walking mechanism includes a guide wheel 24 connected to the frame 1, two suspension wheel assemblies 2, and a drive wheel assembly 3 located between the two suspension wheel assemblies 2. The guide wheel 24 passes vertically through the slot 42. The suspension wheel assembly 2 includes a pair of suspension wheels 21 that contact the two support edges 41. The bottom end of the slot 42 forms a walking track 43. The drive wheel assembly 3 includes a drive wheel 31 that contacts the walking track 43.

[0044] Adjustment component 5 is disposed between the frame 1 and the suspension wheel assembly 2 to adjust the contact force between the suspension wheel 21 and the support edge 41;

[0045] The hand-operated mechanism 6 is disposed on the frame 1 and includes a drive disc 61 connected to the drive wheel 31 and a pull rope 62 connected to the drive disc 61. By pulling the pull rope 62, the drive wheel 31 is driven to rotate.

[0046] Through the above-described configuration, the hand-operated trolley, in conjunction with the C-shaped track 4, provides stable movement of the trolley on the track, preventing skewness and slippage, and improving operational stability. The adjustment component 5 can adjust the contact force between the suspension wheel 21 and the support edge 41 as needed, ensuring appropriate contact force, providing smooth movement, and reducing frictional resistance.

[0047] In some embodiments, each suspension wheel assembly 2 includes a connecting seat 22 and a connecting shaft 23 extending laterally through the connecting seat 22. Bearings are provided at both ends of the connecting shaft 23. Two suspension wheels 21 are rotatably connected to both ends of the connecting shaft 23 via the bearings, and two guide wheels 24 are bolted to both ends of the connecting seat 22 longitudinally. By providing guide wheels 24, the stability of the trolley on the C-shaped track 4 can be improved, preventing it from tilting and slipping.

[0048] In some embodiments, the frame 1 includes two horizontally arranged and connected frame vertical plates 11 and a frame bottom plate 12 connected between the two frame vertical plates 11.

[0049] In some embodiments, the system further includes two drive mounting plates 13 and a transverse connecting rod 14. The two drive mounting plates 13 are located on the outside of the frame vertical plates 11, and the transverse connecting rod 14 passes through the two drive mounting plates 13 and the two frame vertical plates 11. Bolt assemblies are connected to both ends of the transverse connecting rod 14. The drive mounting plates 13 are used to install the drive mechanism, and multiple hanging plates 15 are snapped between the side walls at the bottom of each of the two frame vertical plates 11.

[0050] In some embodiments, each of the suspension wheel assemblies 2 further includes a vertical connecting rod 25, one end of which is connected to the middle of the connecting seat 22, and the other end is connected to the chassis base plate 12 via a cotter pin and a hexagonal open nut 26.

[0051] In some embodiments, a first support plate 27 is also connected between the two frame vertical plates 11, and a vertical connecting rod 25 in one of the suspension wheel assemblies 2 passes through the first support plate 27 and is connected to a fixing nut that abuts against the bottom end of the first support plate 27.

[0052] In some embodiments, a second support plate 28 is connected between the two frame vertical plates 11. The adjustment assembly 5 includes a disc spring 51 sleeved on the vertical connecting rod 25 of another suspension wheel assembly 2 and an adjustment nut assembly 52. ​​The adjustment nut assembly 52 includes multiple stacked adjustment nuts. The elastic component abuts against the bottom end of the second support plate 28, and the adjustment nut assembly 52 abuts against the upper end of the frame base plate 12 and the disc spring 51. The adjustment process of the adjustment assembly 5 is achieved by adjusting the compression of the disc spring 51 using the adjustment nuts. When it is necessary to increase the contact force between the suspension wheel 21 and the C-shaped track, the disc spring 51 is compressed by adjusting the nuts; conversely, when it is necessary to reduce the contact force, the disc spring 51 is loosened. During the adjustment process, the adjustment nuts are used to fix and adjust the position of the elastic component.

[0053] By properly adjusting the adjustment component 5, the appropriate contact force between the suspension wheel 21 and the support edge 41 can be ensured, thereby providing stable travel and reducing frictional resistance. This ensures the smooth travel of the trolley on the C-shaped track 4 and reduces safety hazards caused by improper contact force.

[0054] Because the frame of the trolley is assembled using components such as bolts, cotter pins, and hexagonal open nuts 26, and the parts are not connected by welding, the hand-pulled trolley is easier to maintain and disassemble, facilitating daily upkeep. The design of the connecting seat 22 and connecting shaft 23, as well as the structure of the suspension wheel assembly 2, enhances the load-bearing capacity and stability of the trolley, while simplifying the suspension and drive system and improving the overall reliability of the vehicle. The design of components such as the drive mounting plate 13 and the transverse connecting rod 14 ensures the installation and fixation of the drive mechanism, making the overall structure more stable and providing convenience for assembly.

[0055] In some embodiments, the drive wheel assembly 3 includes a rotating shaft 32 rotatably connected to the frame 1, the drive wheel 31 is connected to the rotating shaft 32, and the hand-pulling mechanism 6 further includes a drive shaft 63 rotatably connected to the drive mounting plate 13. The drive shaft 63 is connected to the central through hole of the drive disc 61 by a key. The end of the drive shaft 63 is provided with a drive gear 64, and the end of the rotating shaft 32 is provided with a driven gear 33 that cooperates with the drive gear 64.

[0056] In some embodiments, the pull mechanism 6 further includes a guide assembly rotatably connected to the frame 1, and a drive groove 611 is provided along the outer periphery of the drive disc 61. The guide assembly includes a guide seat 65 and pressure rollers 66 rotatably connected to the guide seat 65 and located on both sides of the drive disc 61. The pull rope 62 has a head-to-tail structure. One end of the pull rope 62 passes between one of the pressure rollers 66 and the drive disc 61 and passes through the drive groove 611, and then passes between the other pressure roller 66 and the drive disc 61, and the pull rope 62 is pressed by the pressure rollers 66.

[0057] In some embodiments, a fixing plate 69 is further provided between the drive disk 61 and the guide seat 65. The drive disk 61 has locking holes 612 distributed circumferentially on its end face. One end of the fixing plate 69 is connected to the guide seat 65, and the other end is connected to a locking stud 67 and a locking nut 68 that cooperates with the locking stud 67. The locking stud 67 can extend into the locking hole 612 to prevent the drive disk 61 from rotating.

[0058] The hand-operated mechanism 6 uses a drive disc 61, a drive shaft 63, and a pull rope 62 in cooperation. Pulling the pull rope 62 drives the drive wheel 31 to rotate, making operation simple and convenient. The guide component and the drive groove 611 allow the pull rope 62 to pass smoothly between the pressure wheel 66 and the drive disc 61, providing a stable pulling effect. The locking stud 67 and the fixing plate 69 prevent the drive disc 61 from rotating accidentally when the trolley is not in operation, ensuring operational safety.

[0059] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A matching structure between a hand-operated trolley and a C-shaped track, characterized in that, include: The C-shaped track (4) includes a fixing part (40) on the upper side and a C-shaped suspension part connected to the fixing part (40) and having two supporting sides (41), with a slot (42) extending along the length direction of the C-shaped track (4) between the two supporting sides (41). Frame (1); The walking mechanism includes a guide wheel (24) connected to the frame (1), two suspension wheel assemblies (2) and a drive wheel assembly (3) located between the two suspension wheel assemblies (2). The guide wheel (24) extends vertically through the slot (42). The suspension wheel assembly (2) includes a pair of suspension wheels (21) that contact the two support edges (41). The bottom end of the slot (42) forms a walking track (43). The drive wheel assembly (3) includes a drive wheel (31) that contacts the walking track (43). An adjustment component (5) is disposed between the frame (1) and the suspension wheel assembly (2) to adjust the contact force between the suspension wheel (21) and the support edge (41); A hand-operated mechanism (6) is provided on the frame (1) and includes a drive disc (61) connected to the drive wheel (31) and a pull rope (62) connected to the drive disc (61). By pulling the pull rope (62), the drive wheel (31) is driven to rotate. The frame (1) includes two horizontally arranged and connected frame vertical plates (11) and a frame bottom plate (12) connected between the two frame vertical plates (11). Each of the suspension wheel assemblies (2) includes a connecting seat (22) and a connecting shaft (23) that extends laterally through the connecting seat (22); It also includes two drive mounting plates (13) and a transverse connecting rod (14). The two drive mounting plates (13) are located on the outside of the frame vertical plate (11) respectively. The transverse connecting rod (14) passes through the two drive mounting plates (13) and the two frame vertical plates (11). Bolt assemblies are connected to both ends of the transverse connecting rod (14). The drive mounting plates (13) are used to install the drive wheel assembly (3). Multiple hanging plates (15) are snapped between the side walls at the bottom of the two frame vertical plates (11). Each of the suspension wheel assemblies (2) also includes a vertical connecting rod (25); A second support plate (28) is also connected between the two frame vertical plates (11). The adjustment assembly (5) includes a disc spring (51) sleeved on the vertical connecting rod (25) in another suspension wheel assembly (2) and an adjustment nut assembly (52). The adjustment nut assembly (52) includes a plurality of stacked adjustment nuts. The disc spring (51) abuts against the bottom end of the second support plate (28). The adjustment nut assembly (52) abuts against the upper end of the frame bottom plate (12) and the disc spring (51). The drive wheel assembly (3) includes a rotating shaft (32) rotatably connected to the frame (1), and the drive wheel (31) is connected to the rotating shaft (32). The hand-pulling mechanism (6) also includes a drive shaft (63) rotatably connected to the drive mounting plate (13). The drive shaft (63) is connected to the central through hole of the drive disc (61) by a key. The end of the drive shaft (63) is provided with a drive gear (64), and the end of the rotating shaft (32) is provided with a driven gear (33) that cooperates with the drive gear (64). The hand-operated mechanism (6) also includes a guide assembly connected to the frame (1), and a drive groove (611) is provided along the outer edge of the drive disc (61). The guide assembly includes a guide seat (65) and a pressure wheel (66) rotatably connected to the guide seat (65) and located on both sides of the drive disc (61). The pull rope (62) has a head-to-tail structure. One end of the pull rope (62) passes between one of the pressure wheels (66) and the drive disc (61) and passes through the drive groove (611), and then passes between the other pressure wheel (66) and the drive disc (61). It also includes a fixing plate (69) disposed between the drive disk (61) and the guide seat (65). The drive disk (61) has locking holes (612) distributed circumferentially on its end face. One end of the fixing plate (69) is connected to the guide seat (65), and the other end is connected to a locking stud (67) and a locking nut (68) that cooperates with the locking stud (67). The locking stud (67) can extend into the locking hole (612) to prevent the drive disk (61) from rotating.

2. The matching structure of a hand-operated trolley and a C-shaped track according to claim 1, characterized in that, The connecting shaft (23) is provided with bearings at both ends, and the two suspension wheels (21) are rotatably connected to the two ends of the connecting shaft (23) through the bearings respectively. The two guide wheels (24) are connected to the longitudinal ends of the connecting seat (22) by bolts.

3. The matching structure of a hand-operated trolley and a C-shaped track according to claim 1, characterized in that, One end of the vertical connecting rod (25) is connected to the middle of the connecting seat (22), and the other end is connected to the chassis base plate (12) by a cotter pin and a hexagonal open nut (26).

4. The matching structure of a hand-operated trolley and a C-shaped track according to claim 1, characterized in that, A first support plate (27) is also connected between the two frame vertical plates (11), and the vertical connecting rod (25) in one of the suspension wheel assemblies (2) passes through the first support plate (27) and is connected to a fixing nut that abuts against the bottom end of the first support plate (27).

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