A wheelbase adaptive smaller turning radius transfer trolley

Abstract

The application discloses a small-radius-turning transfer trolley with adaptive wheelbase, which comprises a first dragging plate and a second dragging plate, the center of the bottom of the first dragging plate is rotationally connected with a first rotating shaft through a first rotating column, the center of the bottom of the second dragging plate is rotationally connected with a second rotating shaft through a second rotating column, and the two ends of the first rotating shaft and the two ends of the second rotating shaft are respectively rotationally connected with rear wheels and front wheels, and the application relates to the technical field of trailers. The small-radius-turning transfer trolley with adaptive wheelbase is characterized in that the first rotating shaft and the second rotating shaft connected with the rear wheels and the front wheels are respectively rotationally arranged at the bottoms of the first dragging plate and the second dragging plate, and the first rotating shaft and the second rotating shaft are connected through cooperation of a sliding rail, a swing rod, a pushing plate and a pushing shaft, the second rotating shaft can be reversely rotated simultaneously when the first rotating shaft is rotated, and thus the radius of the trolley during turning can be greatly reduced, the trolley can realize turning in limited space such as a workshop warehouse, and the application range is wider.

Description

Technical Field

[0001] This invention relates to the field of trailer technology, specifically to a transport vehicle with an adaptive wheelbase and a smaller turning radius. Background Technology

[0002] "Transfer" refers to continuous operation, changes, or transportation. It's a professional term; it refers to transporting goods from point A through point B to point C. Wheelbase is the distance between the centers of the front and rear axles of a car. It's the distance between two perpendicular lines drawn from the centers of adjacent wheels on the same side of the car, perpendicular to the car's longitudinal plane of symmetry. It refers to the wheelbase of locomotives or other carriages. It's further divided into fixed wheelbase, bogie wheelbase, and full wheelbase. Full wheelbase, the distance from the front axle to the rear axle, is a key parameter affecting the train's "turntable length."

[0003] Currently, in some factories or warehouses, goods are generally transferred using hand-pulled trolleys. However, the wheels of these trolleys are fixed at the four corners, and the wheelbase between the wheels is fixed. This results in a large turning radius for the trolleys, making them difficult to maneuver in narrow spaces. Furthermore, the fixed size of these trolleys wastes space when transferring a small number of items, and is insufficient when transferring a large number of items, thus limiting their use. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a transfer trolley with an adaptive wheelbase and a smaller turning radius. This solves the problems of existing small trailers having fixed swivel wheels at the four corners, a fixed wheelbase between the wheels, a large turning radius during turning, and a fixed trailer area, which limits their use.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a wheelbase-adaptive transfer trolley with a smaller turning radius, comprising a first trailer and a second trailer. The center of the bottom of the first trailer is rotatably connected to a first rotating shaft via a first rotating column. The center of the bottom of the second trailer is rotatably connected to a second rotating shaft via a second rotating column. Rear wheels and front wheels are rotatably connected to the two ends of the first rotating shaft and the two ends of the second rotating shaft, respectively. A slide rail and a swing rod are fixedly connected to the front side of the first rotating column and the rear side of the second rotating column, respectively. A push plate is fixedly connected to the rear end of the swing rod. A push shaft is fixedly connected to the bottom of the push plate. The slide rail is sleeved on the outside of the push shaft, and a groove is provided inside the slide rail that is slidably connected to the surface of the push shaft. A pull handle is fixedly connected between the two sides of the surface of the second rotating shaft.

[0008] Preferably, bearing seats are fixedly connected to both the left and right sides of the bottom front side of the second slide, and a lead screw is rotatably connected inside the bearing seat.

[0009] Preferably, the bottom of the first slide plate is fixedly connected to a threaded sleeve that is threadedly connected to the surface of the lead screw, and the bottom of the second slide plate is fixedly connected to a rotating sleeve that is rotatably connected to the surface of the lead screw.

[0010] Preferably, sprockets are fixedly connected to the surfaces of both lead screws and to the front side of the bearing housing, and the surfaces of the two sprockets are connected by chain drive. A handwheel is fixedly connected to the front end of the left lead screw.

[0011] Preferably, the bottom of the first and second slides and the periphery of the first and second rotating columns are both fixedly connected to support seats, and the surfaces of the first and second rotating shafts and the bottom of the support seats are both rotatably connected to support wheels.

[0012] Preferably, the support base includes two annular plates, and a steel plate support frame is fixedly connected between the two annular plates.

[0013] Preferably, a support sleeve is fixedly connected to the rear side of the bottom of the first slide and the front side of the bottom of the second slide, and a support plate is slidably connected between the interiors of the two sets of support sleeves.

[0014] Preferably, the support plate is I-shaped, and the width at both ends of the support plate is greater than the width of the inner cavity of the support sleeve.

[0015] (III) Beneficial Effects

[0016] This invention provides a transfer trolley with an adaptive wheelbase and a smaller turning radius. Compared with the prior art, it has the following advantages:

[0017] (1) The wheelbase adaptive smaller turning radius transfer trolley is connected to a first rotating shaft through a first rotating column at the center of the bottom of the first slide, and to a second rotating shaft through a second rotating column at the center of the bottom of the second slide. The two ends of the first rotating shaft and the two ends of the second rotating shaft are respectively connected to the rear wheel and the front wheel. The front side of the first rotating column and the rear side of the second rotating column are respectively fixedly connected to the slide rail and the swing rod. The rear end of the swing rod is fixedly connected to the push plate. The bottom of the push plate is fixedly connected to the push shaft. The slide rail is sleeved on the outside of the push shaft. The slide rail has a groove that slides and connects to the surface of the push shaft. The two sides of the surface of the second rotating shaft are fixedly connected to the pull handle. The first rotating shaft and the second rotating shaft connected to the rear wheel and the front wheel are respectively rotatably set at the bottom of the first slide and the second slide. The slide rail, the swing rod, the push plate and the push shaft are used to connect the first rotating shaft and the second rotating shaft. When the first rotating shaft rotates, the second rotating shaft can rotate in the opposite direction at the same time, which can greatly reduce the turning radius of the trolley, so that it can turn in limited spaces such as workshops and warehouses, and has a wider range of applications.

[0018] (2) This wheelbase-adaptive, smaller turning radius transfer trolley has bearing seats fixedly connected to both the left and right sides of the bottom front of the second slide, and a lead screw is rotatably connected inside the bearing seats. A threaded sleeve that is threaded to the surface of the lead screw is fixedly connected to the bottom of the first slide, and a rotating sleeve that is rotatably connected to the surface of the lead screw is fixedly connected to the bottom of the second slide. A sprocket is fixedly connected to the surface of the two lead screws and to the front of the bearing seats, and the surfaces of the two sprockets are connected by a chain drive. A handwheel is fixedly connected to the front end of the left lead screw. The first and second slides are connected by setting the lead screw, threaded sleeve and rotating sleeve. The distance between the first and second slides can be adjusted by simply rotating the lead screw, thereby expanding the support area and storing different amounts of goods. It is convenient to use. The two lead screws are connected by the sprocket and chain. The handwheel can be turned to drive the lead screws on both sides to rotate synchronously. It is easy to operate.

[0019] (3) The wheelbase adaptive smaller turning radius transfer trolley has support seats fixedly connected to the bottom of the first and second slides and to the periphery of the first and second rotating columns. Support wheels are rotatably connected to the surface of the first and second rotating shafts and to the bottom of the support seats. By setting support seats and support wheels at the bottom of the slides, additional support force can be provided in addition to the first and second rotating columns, and the support range is expanded. This can protect the first and second rotating shafts and prevent them from bending and deforming due to excessive force in their middle section. Attached Figure Description

[0020] Figure 1 This is a bottom view of the first and second slides of the present invention in a combined state;

[0021] Figure 2This is a bottom view of the first and second slides of the present invention in their extended states;

[0022] Figure 3 This is a bottom view of the vehicle in the turning state of the present invention;

[0023] Figure 4 This is a front view of the sprocket and chain of the present invention;

[0024] Figure 5 This is a cross-sectional view of the support base of the present invention.

[0025] In the diagram, 1-first slide plate, 2-second slide plate, 3-first rotating column, 4-first rotating shaft, 5-second rotating column, 6-second rotating shaft, 7-rear wheel, 8-front wheel, 9-slide rail, 10-swing rod, 11-push plate, 12-push shaft, 13-pull handle, 14-bearing seat, 15-lead screw, 16-threaded sleeve, 17-rotating sleeve, 18-sprocket, 19-chain, 20-handwheel, 21-support seat, 22-support wheel, 23-ring plate, 24-steel plate support frame, 25-support sleeve, 26-support plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-5This invention provides a technical solution: a wheelbase-adaptive transfer trolley with a smaller turning radius, comprising a first slide 1 and a second slide 2. Bearing seats 14 are fixedly connected to both the left and right sides of the bottom front side of the second slide 2, and a lead screw 15 is rotatably connected inside the bearing seats 14. A threaded sleeve 16, threadedly connected to the surface of the lead screw 15, is fixedly connected to the bottom of the first slide 1. A rotating sleeve 17, rotatably connected to the surface of the lead screw 15, is fixedly connected to the bottom of the second slide 2. Sprockets 18 are fixedly connected to the surfaces of both lead screws 15, located in front of the bearing seats 14, and the surfaces of the two sprockets 18 are connected by a chain 19. A handwheel 20 is fixedly connected to the front end of the left lead screw 15. The design involves the lead screw 15 engaging with the threaded sleeve 16 and the rotating sleeve 17. 7 connects the first slide 1 and the second slide 2. The distance between the first slide 1 and the second slide 2 can be adjusted simply by rotating the lead screw 15, thereby expanding the support area and allowing for the storage of different quantities of goods. It is convenient to use. The two lead screws 15 are connected by a sprocket 18 and a chain 19. Turning the handwheel 20 simultaneously drives both lead screws 15 to rotate synchronously, making operation convenient. Support seats 21 are fixedly connected to the bottom of the first slide 1 and the second slide 2, located around the first rotating column 3 and the second rotating column 5. Support wheels 22 are rotatably connected to the surfaces of the first rotating shaft 4 and the second rotating shaft 6, located at the bottom of the support seats 21. By setting support seats 21 and support wheels 22 at the bottom of the slides, additional support force can be provided beyond the first rotating column 3 and the second rotating column 5. Furthermore, the support range is expanded, protecting the first rotating shaft 4 and the second rotating shaft 6 from excessive stress and bending deformation in their middle sections. The support base 21 includes two annular plates 23, with a steel plate support frame 24 fixedly connected between the two annular plates 23. Support sleeves 25 are fixedly connected to the rear side of the bottom of the first slide 1 and the front side of the bottom of the second slide 2. A support plate 26 is slidably connected between the interiors of the two sets of support sleeves 25. The length of the support plate 26 is less than the overall length of the two slides. The support plate 26 is I-shaped, and the width at both ends of the support plate 26 is greater than the width of the inner cavity of the support sleeve 25. The support plate 26 cooperates with the support sleeve 25 to provide auxiliary support force and reduce the pressure on the lead screw 15. The center of the bottom of the first slide 1 is rotatably connected to the first rotating column 3. The first rotating shaft 4 and the center of the bottom of the second sliding plate 2 are rotatably connected to the second rotating column 5 via the second rotating column 5. The two ends of the first rotating shaft 4 and the two ends of the second rotating shaft 6 are respectively rotatably connected to the rear wheel 7 and the front wheel 8. The front side of the first rotating column 3 and the rear side of the second rotating column 5 are respectively fixedly connected to the slide rail 9 and the swing rod 10. The rear end of the swing rod 10 is fixedly connected to the push plate 11, and the bottom of the push plate 11 is fixedly connected to the push shaft 12. The slide rail 9 is sleeved on the outside of the push shaft 12, and the interior of the slide rail 9 has a groove that slidably connects to the surface of the push shaft 12. A pull handle 13 is fixedly connected between the two sides of the surface of the second rotating shaft 6. The first rotating shaft 4 and the second rotating shaft 6 connected to the rear wheel 7 and the front wheel 8 are respectively rotatably mounted at the bottom of the first sliding plate 1 and the second sliding plate 2.The system utilizes a slide rail 9, a swing rod 10, a push plate 11, and a push shaft 12 to connect the first rotating shaft 4 and the second rotating shaft 6. When the first rotating shaft 4 rotates, the second rotating shaft 6 can simultaneously rotate in the opposite direction, thus significantly reducing the turning radius of the trolley and enabling it to turn in limited spaces such as workshops and warehouses, thus broadening its applicability.

[0028] In use, depending on the amount of goods to be transported or the size of the passageway, turning the handwheel 20 rotates the left lead screw 15, and the two sprockets 18, together with the chain 19, drive the right lead screw 15 to rotate synchronously. Then, the threaded sleeve 16 can be used to drive the second slide plate 2 to move closer to or away from the first slide plate 1, thereby adjusting the distance between the two. When a turn is needed, simply pull the handle 13 to turn to one side. Pulling the handle 13 drives the second rotating shaft 6 and its rotating swing rod 10, push plate 11 and push shaft 12 to swing, thereby driving the slide rail 9 to rotate, causing the first rotating shaft 4 to rotate in the opposite direction. At this time, both the rear wheel 7 and the front wheel 8 deflect, thereby reducing the turning radius of the trolley.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wheelbase-adaptive transfer trolley with a smaller turning radius, comprising a first trailer (1) and a second trailer (2), characterized in that: The center of the bottom of the first slide plate (1) is rotatably connected to the first rotating shaft (4) via the first rotating column (3). The center of the bottom of the second slide plate (2) is rotatably connected to the second rotating shaft (6) via the second rotating column (5). The two ends of the first rotating shaft (4) and the two ends of the second rotating shaft (6) are respectively rotatably connected to the rear wheel (7) and the front wheel (8). The front side of the first rotating column (3) and the rear side of the second rotating column (5) are respectively fixedly connected to the slide rail (9) and the swing rod (10). The rear end of the swing rod (10) is fixedly connected to the push plate (11). The bottom of the push plate (11) is fixedly connected to the push shaft (12). The slide rail (9) is sleeved on the outside of the push shaft (12), and the slide rail (9) has a groove that is slidably connected to the surface of the push shaft (12). A pull handle (13) is fixedly connected between the two sides of the surface of the second rotating shaft (6). Bearing seats (14) are fixedly connected to the left and right sides of the bottom front side of the second slide plate (2), and a lead screw (15) is rotatably connected inside the bearing seat (14). Support sleeves (25) are fixedly connected to the rear side of the bottom of the first slide plate (1) and the front side of the bottom of the second slide plate (2), and a support plate (26) is slidably connected between the interiors of the two sets of support sleeves (25).

2. The wheelbase-adaptive smaller turning radius transfer trolley according to claim 1, characterized in that: The bottom of the first slide plate (1) is fixedly connected to a threaded sleeve (16) that is threaded to the surface of the lead screw (15), and the bottom of the second slide plate (2) is fixedly connected to a rotating sleeve (17) that is rotatably connected to the surface of the lead screw (15).

3. The wheelbase-adaptive smaller turning radius transfer trolley according to claim 1, characterized in that: Both of the lead screws (15) are fixedly connected to sprockets (18) on their surfaces and in front of the bearing housing (14), and the surfaces of the two sprockets (18) are connected by a chain (19). A handwheel (20) is fixedly connected to the front end of the lead screw (15) on the left side.

4. A wheelbase-adaptive transfer trolley with a smaller turning radius according to claim 1, characterized in that: Support seats (21) are fixedly connected to the bottom of the first slide (1) and the second slide (2) and to the periphery of the first rotating column (3) and the second rotating column (5). Support wheels (22) are rotatably connected to the surface of the first rotating shaft (4) and the second rotating shaft (6) and to the bottom of the support seats (21).

5. A wheelbase-adaptive transfer trolley with a smaller turning radius according to claim 4, characterized in that: The support base (21) includes two annular plates (23) on the top and bottom, and a steel plate support frame (24) is fixedly connected between the two annular plates (23).

6. A wheelbase-adaptive transfer trolley with a smaller turning radius according to claim 1, characterized in that: The support plate (26) is I-shaped, and the width of both ends of the support plate (26) is greater than the width of the inner cavity of the support sleeve (25).

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