Quickly foldable tool cart linkage
By designing a tool cart linkage mechanism that can be quickly folded, and utilizing a combination of pins and socket tubes, flexible adjustment of angle and height is achieved, solving the problem that existing technologies cannot adjust simultaneously, and improving the adaptability and installation efficiency of the tool cart linkage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO EVER-LEADING TOOLS CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-08-04
AI Technical Summary
The existing linkage mechanism of the utility vehicle cannot adjust the height and angle simultaneously, resulting in insufficient compatibility with tractor and trailer vehicles and limiting its practicality.
A quick-folding mechanism was designed, comprising a tractor connector, an angle adjustment connector, and a height adjustment connector. Through the combination of pins and socket tubes, the angle and height can be flexibly adjusted, facilitating installation and disassembly.
It enables flexible adjustment of the angle and height between the tractor connector and the tool cart connector, adapting to the installation needs of different tool carts and improving practicality and installation efficiency.
Smart Images

Figure CN224588869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tool cart accessories technology, specifically a tool cart linkage mechanism that can be quickly folded. Background Technology
[0002] Mobile tool carts, also known as tool carts, are mobile industrial containers used to store hand tools. They are mainly used in auto repair shops, factory assembly lines, and aircraft manufacturing. They are mainly divided into mobile tool carts and heavy-duty tool carts. By using tool carts, workers can easily move the tools they need from one place to another, greatly improving work efficiency. Tool carts usually do not have a power mechanism and need to be mounted on a tractor. The tractor pulls the tool cart to the corresponding location. Therefore, the tool cart and the tractor are connected by a linkage mechanism.
[0003] Chinese patent discloses an adjustable trailer assembly (authorization announcement number CN120207028A). This patented technology can connect the towing vehicle and the trailer while also conveniently adjusting the height of the towing ball connecting rod and the trailer arm connecting rod. This makes it suitable for various trailer towing operations, with a wide range of applications. The towing ball is easy to assemble and suitable for widespread use. However, it cannot adjust the position in both height and angle at the same time, which results in its practicality not being well matched with the towing vehicle and the trailer. Utility Model Content
[0004] The purpose of this invention is to provide a tool cart linkage mechanism that can be quickly folded, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A quick-folding tool cart linkage mechanism includes a tractor connector. One end of the tractor connector is sleeved with an angle adjustment connector, and one end of the angle adjustment connector is inserted with a height adjustment connector. One side of the height adjustment connector is connected to a tool cart connector. The angle adjustment connector includes a first connecting plate and a second connecting plate corresponding to the first connecting plate. Two sets of connecting rods are connected between the first and second connecting plates. Each set of connecting rods is connected to the second connecting plate with a pin three through it, and each set of connecting rods is connected to the first connecting plate with two pins one through it. The inner side of the first connecting plate has several adjustment holes fan-shaped around the corresponding pin one. One end of the second connecting plate is fixedly connected with a second insertion tube. A set of fourth pins is installed through the inner side of the second insertion tube. One end of the first connecting plate is fixedly connected with a first insertion tube. A set of second pins is installed through the inner side of the first insertion tube.
[0007] As a further embodiment of this utility model: one end of the tractor connector is inserted into the inner side of the socket pipe two, and the tractor connector and the socket pipe two are fixedly connected by a set of four pins.
[0008] As a further embodiment of this utility model: the height adjustment connector includes a horizontal tube and a vertical tube inserted into the inner side of the horizontal tube. The horizontal tube and the vertical tube are connected to each other by a pin. One end of the horizontal tube is fixedly connected to a socket tube three. A set of fixing holes one is provided through the inner side of the socket tube three. Several fixing holes two are provided through the inner side of the vertical tube. A set of lugs is provided on one side of the vertical tube and the upper end of the horizontal tube. A reinforcing rod is rotatably connected between the two sets of lugs through a rotating shaft.
[0009] As a further embodiment of this utility model: the third socket tube is inserted into the inner side of the first socket tube, and the third socket tube and the first socket tube are fixedly connected by a set of pins.
[0010] As a further embodiment of this utility model: the tool cart connector includes a double fork frame, one end of which is fixedly connected to a bent connecting frame, and a pull rod is provided through the inner side of the double fork frame. A ball head is fixedly connected to the upper end of the pull rod, and a nut is threadedly connected to the lower end of the pull rod. A U-shaped frame is fixedly connected to one end of the bent connecting frame, and a set of six pins is provided through the inner side of the U-shaped frame.
[0011] As a further improvement of this utility model: the U-shaped frame is engaged with the vertical tube, and the vertical tube and the U-shaped frame are fixedly connected by a set of six pins.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] In this utility model, the tractor connector, angle adjustment connector, height adjustment connector, and tool cart connector are all detachable and easy to install; the angle adjustment connector can change the angle between the tractor connector and the tool cart connector; the height adjustment connector can change the height between the tractor connector and the tool cart connector, thereby adapting to different tool cart installation needs. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a linkage mechanism for a quick-folding tool cart.
[0015] Figure 2 An exploded view of the linkage mechanism of a quick-folding tool cart;
[0016] Figure 3 This is a structural schematic diagram of an angle-adjustable connector in a linkage mechanism of a quick-folding tool cart.
[0017] Figure 4 This is a schematic diagram of the height adjustment connector in a linkage mechanism of a quick-folding tool cart.
[0018] Figure 5 This is a schematic diagram of the tool cart connector in a quick-folding tool cart linkage mechanism.
[0019] In the diagram: 1. Tractor connector; 2. Angle adjustment connector; 21. Connecting plate one; 22. Pin one; 23. Pin two; 24. Socket tube one; 25. Adjustment hole; 26. Connecting rod; 27. Pin three; 28. Connecting plate two; 29. Socket tube two; 20. Pin four; 3. Height adjustment connector; 31. Horizontal tube; 32. Rotary shaft; 33. Socket tube three; 34. Fixing hole one; 35. Shaft lug; 36. Reinforcing rod; 37. Fixing hole two; 38. Vertical tube; 39. Pin five; 4. Tool cart connector; 41. Double fork frame; 42. Nut; 43. Tie rod; 44. Ball head; 45. Bent connecting frame; 46. U-shaped frame; 47. Pin six. Detailed Implementation
[0020] Please see Figures 1-5 In this embodiment of the utility model, a tool cart linkage mechanism that can be quickly folded includes a tractor connector 1, an angle adjustment connector 2 is sleeved on one end of the tractor connector 1, a height adjustment connector 3 is inserted into one end of the angle adjustment connector 2, a tool cart connector 4 is connected to one side of the height adjustment connector 3, one end of the tractor connector 1 is mounted on the tractor, and one end of the tool cart connector 4 is connected to the tool cart.
[0021] exist Figure 1 and Figure 3In the middle, the angle adjustment connector 2 includes a connecting plate 1 21 and a connecting plate 28 corresponding to the connecting plate 1 21. Two sets of connecting rods 26 are connected between the connecting plate 1 21 and the connecting plate 28. A pin 3 27 is connected through each set of connecting rods 26 to the connecting plate 28, and two pins 1 22 are connected through each set of connecting rods 26 to the connecting plate 1 21. Several adjustment holes 25 are fan-shaped on the inner side of the connecting plate 1 21 with the corresponding pins 1 22 as the center. One end of the connecting plate 28 is fixedly connected to a socket tube 29. A set of pins 4 20 is installed through the inner side of the socket tube 29. One end of the connecting plate 1 21 is fixedly connected to the socket tube 29. A fixed connection is provided with a socket tube 24. A set of pins 23 are provided through the inner side of the socket tube 24, so that one of the pins 22 remains stationary while the other pin 22 is inserted into different adjustment holes 25 to adjust the angle between the connecting rod 26 and the connecting plate 21. This allows the position of the connecting plate 28 and the connecting plate 21 to be changed to adapt to different tool vehicle installation requirements. One end of the tractor connector 1 is inserted into the inner side of the socket tube 29, and the tractor connector 1 and the socket tube 29 are fixedly connected by a set of pins 20. This allows the tractor connector 1 and the angle adjustment connector 2 to be installed together and is easy to disassemble.
[0022] exist Figure 3 and Figure 4 In the figure, the height adjustment connector 3 includes a horizontal tube 31 and a vertical tube 38 inserted into the inner side of the horizontal tube 31. The horizontal tube 31 and the vertical tube 38 are connected by a pin 39. One end of the horizontal tube 31 is fixedly connected to a socket tube 33. A set of fixing holes 34 are provided through the inner side of the socket tube 33. Several fixing holes 37 are provided through the inner side of the vertical tube 38. A set of lugs 35 are provided on one side of the vertical tube 38 and the upper end of the horizontal tube 31. The two sets of lugs 35 are rotatably connected to a reinforcing rod 36 through a pivot 32. When the pin 39 is removed, the vertical tube 38, the reinforcing rod 36 and the horizontal tube 31 can be quickly folded together. The socket tube 33 is inserted into the inner side of the socket tube 24, and the socket tube 33 and the socket tube 24 are fixedly connected by a set of pins 23. Thus, the height adjustment connector 3 and the angle adjustment connector 2 can be installed together and are easy to disassemble.
[0023] exist Figure 4 and Figure 5In the tool cart connector 4, a double fork 41 is included. A bent connecting frame 45 is fixedly connected to one end of the double fork 41, and a pull rod 43 is provided through the inner side of the double fork 41. A ball head 44 is fixedly connected to the upper end of the pull rod 43, and a nut 42 is threadedly connected to the lower end of the pull rod 43. The tool cart can be connected to the tool cart either through the ball head 44 or through the pull rod 43. By turning the nut 42 counterclockwise, the pull rod 43 and the ball head 44 can be removed from the double fork 41. This facilitates fixing the pull rod 43 to the tool cart; one end of the bending frame 45 is fixedly connected to a U-shaped frame 46, and a set of six pins 47 are provided through the inner side of the U-shaped frame 46. The U-shaped frame 46 is engaged with the vertical tube 38, and the vertical tube 38 and the U-shaped frame 46 are fixedly connected by a set of six pins 47. By inserting the six pins 47 into the fixing holes 37 at different heights, the tool cart connector 4 can be installed at different heights on the height adjustment connector 3 to adapt to different tool cart installation needs.
[0024] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A quick-folding tool cart linkage mechanism, comprising a tractor connector (1), characterized in that, An angle adjustment connector (2) is sleeved on one end of the tractor connector (1), and a height adjustment connector (3) is inserted into one end of the angle adjustment connector (2). A tool cart connector (4) is connected to one side of the height adjustment connector (3). The angle adjustment connector (2) includes a first connecting plate (21) and a second connecting plate (28) corresponding to the first connecting plate (21). Two sets of connecting rods (26) are connected between the first connecting plate (21) and the second connecting plate (28). A pin is connected through each set of connecting rods (26) to the second connecting plate (28). Three (27), and each set of connecting rods (26) and connecting plate one (21) are connected by two pins one (22). The inner side of the connecting plate one (21) is provided with several adjustment holes (25) in a fan shape with the corresponding pin one (22) as the center. One end of the connecting plate two (28) is fixedly connected to the socket tube two (29). A set of pin four (20) is installed through the inner side of the socket tube two (29). One end of the connecting plate one (21) is fixedly connected to the socket tube one (24). A set of pin two (23) is provided through the inner side of the socket tube one (24).
2. The quick-folding tool cart linkage mechanism according to claim 1, characterized in that, One end of the tractor connector (1) is inserted into the inside of the socket tube (29), and the tractor connector (1) and the socket tube (29) are fixedly connected by a set of four pins (20).
3. The quick-folding tool cart linkage mechanism according to claim 1, characterized in that, The height adjustment connector (3) includes a horizontal tube (31) and a vertical tube (38) inserted into the inner side of the horizontal tube (31). The horizontal tube (31) and the vertical tube (38) are connected by a pin five (39). One end of the horizontal tube (31) is fixedly connected to a socket tube three (33). A set of fixing holes one (34) is provided through the inner side of the socket tube three (33). A number of fixing holes two (37) are provided through the inner side of the vertical tube (38). A set of lugs (35) is provided on one side of the vertical tube (38) and the upper end of the horizontal tube (31). A reinforcing rod (36) is rotatably connected between the two sets of lugs (35) through a rotating shaft (32).
4. The quick-folding tool cart linkage mechanism according to claim 3, characterized in that, The third socket tube (33) is inserted inside the first socket tube (24), and the third socket tube (33) and the first socket tube (24) are fixedly connected by a set of pins (23).
5. The quick-folding tool cart linkage mechanism according to claim 1, characterized in that, The tool cart connector (4) includes a double fork (41), one end of which is fixedly connected to a bent connecting frame (45), and a pull rod (43) is provided through the inner side of the double fork (41). A ball head (44) is fixedly connected to the upper end of the pull rod (43), and a nut (42) is threadedly connected to the lower end of the pull rod (43). A U-shaped frame (46) is fixedly connected to one end of the bent connecting frame (45), and a set of six pins (47) is provided through the inner side of the U-shaped frame (46).
6. The quick-folding tool cart linkage mechanism according to claim 5, characterized in that, The U-shaped frame (46) is engaged with the vertical tube (38), and the vertical tube (38) and the U-shaped frame (46) are fixedly connected by a set of six pins (47).