Tool car

Abstract

The invention discloses a tool car, belongs to the field of tool cars, and solves the problems that a disassembly and assembly structure is high in machining precision requirement and high in maintenance cost, and a clamping stagnation phenomenon exists in adjustment of a storage platform, the technical scheme for solving the problems is that the tool car mainly comprises a supporting column and the storage platform, and the storage platform is provided with a through hole for the supporting column to penetrate through. The storage platform is connected with the supporting column through a clamping device, the clamping device comprises a base, a clamping block arranged on the base in a sliding mode and an adjusting wrench hinged to the base, a clamping cavity allowing the supporting column to penetrate through is formed in the middle of the base, and the clamping block is elastically loaded so as to have the movement tendency to be away from the clamping cavity. The adjusting wrench is provided with a locking position for pushing the clamping block into the clamping cavity and an unlocking position for loosening the clamping block, and the clamping block extends into the clamping cavity so that the clamping device can lock the supporting column. The sliding smoothness of the storage platform and the supporting columns can be improved through the clamping devices.

Description

Technical Field

[0001] This invention demonstrates a tool cart, belonging to the field of tool cart technology. Background Technology

[0002] A tool cart is an auxiliary vehicle used to store and use tools. It has a multi-level storage platform and is equipped with casters at the bottom, allowing it to be moved and thus transported and carried. This keeps the tool cart close to the user at all times. When performing maintenance work, the user can place parts and tools on the tool cart, making it convenient for frequent replacement of parts and tools and greatly improving the user's maintenance efficiency. After the maintenance work is completed, the maintenance tools can also be stored on the tool cart, serving as a tool storage solution.

[0003] As disclosed in prior art CN223100748U, a mobile workstation includes multiple support columns, multiple placement platforms, and multiple disassembly and assembly structures. The disassembly and assembly structure includes a mounting base, a holding part, and a locking assembly. One end of the holding part is connected to the mounting base, and the other end has a connecting end. The holding part and the mounting base form a mounting hole. The connecting part of the locking assembly passes through the connecting end and connects to the mounting base. The locking wrench of the locking assembly presses the connecting end to move, so that the holding part presses the support column.

[0004] In the aforementioned patent, the holding part and the mounting base are an integral structure, which requires high processing precision and dimensional accuracy. If there are deviations in processing, it can easily affect the holding and locking effect on the support column. At the same time, since the mounting hole is formed by the holding part and the mounting base, in order to effectively hold the support column, the diameter of the mounting hole after the holding part and the mounting base are pressed together must be smaller than the diameter of the support column. During the adjustment process after installation, there will be a noticeable jamming sensation when the disassembly structure slides against the support column, which will affect the adjustment of the storage platform. In addition, after long-term use, the connection between the holding part and the mounting base is prone to deformation, which will reduce the rebound amplitude of the holding part. When the locking component is unlocked, the disassembly structure and the support column still maintain a large contact area. Therefore, during the adjustment process, there will be a jamming phenomenon when the storage platform slides against the support column, which will reduce the smoothness of the adjustment of the storage platform. Furthermore, when the holding part is worn, deformed, or damaged, the entire disassembly structure needs to be replaced, which will lead to higher maintenance costs for the disassembly structure. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of high processing precision requirements, high maintenance costs, and jamming in the adjustment of the storage platform in the disassembly and assembly structure. To this end, a tool cart is provided, which can improve the smoothness of sliding between the storage platform and the support column through a clamping device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A tool cart includes a support column and a storage platform. The storage platform has a through hole for the support column to pass through. The storage platform is connected to the support column via a clamping device. The clamping device includes a base, a clamping block slidably disposed on the base, and an adjusting wrench hinged to the base. The base has a clamping cavity in the middle for the support column to pass through. The clamping block is elastically loaded to have a tendency to move away from the clamping cavity. The adjusting wrench has a locking position for pushing the clamping block into the clamping cavity and an unlocking position for releasing the clamping block. The clamping block extends into the clamping cavity to lock the support column with the clamping device.

[0008] The beneficial effects of using the present invention are:

[0009] In this invention, the clamping block is slidably assembled onto the base, meaning the clamping block and base are separate structures. When the clamping block or base is worn, deformed, or damaged, only the clamping block or base needs to be replaced individually, significantly reducing the maintenance cost and improving the maintenance efficiency of the clamping device. Furthermore, the base has a through hole for the support column to pass through. When the adjusting wrench is in the locked position, the clamping block enters the clamping cavity to lock the support column. When the adjusting wrench is in the unlocked position, the clamping block moves away from the clamping cavity to release the lock on the support column. The diameter of the through hole in the base is larger than the diameter of the support column. In the unlocked state, the base... The relative sliding between the base and the support column is smoother, reducing the possibility of jamming during adjustment and making the adjustment smoother, thus improving the user experience. Secondly, the clamping device locks and unlocks the support column through the sliding of the clamping block. Over time, the clamping block and the base are less prone to deformation, ensuring the clamping block can move away from the support column to achieve the unlocking effect. This makes the adjustment of the storage platform smoother. Furthermore, the clamping block is elastically loaded; when the adjusting wrench is in the unlocked position, the clamping block responds quickly and automatically resets to release the support column. This design avoids jamming between the support column and the base, ensuring smooth adjustment of the platform and significantly extending the lifespan of the clamping device. Furthermore, during manufacturing, the diameter of the through hole only needs to be larger than the diameter of the support column, reducing the precision requirements and manufacturing costs. Moreover, the clamping device, mounted on the support column, allows the platform to slide along it, enabling it to be fixed at any height on the support column. This allows for stepless adjustment of the platform, compared to fixing the platform by creating adjustment holes in the support column. The adjustable position of the storage platform allows for a more flexible adjustment range. Operators can flexibly adjust the spacing between each layer of the storage platform according to the height and volume of the stored items and their usage habits, adapting to the needs of storing tools and materials of different sizes and using habits, thus effectively expanding the applicability of the tool cart. In addition, by adjusting the rotation of the wrench, the clamping block can be pressed and unlocked against the support column without the need for additional tools. This allows for quick switching between locking and unlocking states, making the adjustment process of the clamping device simpler, more time-saving, and less labor-intensive, effectively reducing the workload of operators and improving operational efficiency.

[0010] Preferably, the base has a mounting groove on one side, the hinge end of the adjusting wrench is located at the opening of the mounting groove, the clamping block is slidably assembled in the mounting groove, and the end of the clamping block away from the clamping cavity abuts against the hinge end. The adjusting wrench rotates to the locking position and pushes the clamping block into the clamping cavity through the hinge end. Using the aforementioned technical solution, the adjusting wrench and base confine the clamping block within the mounting groove, preventing it from detaching. The mounting groove provides precise guidance for the clamping block, effectively limiting its sliding trajectory and reducing deviations or tilting during reciprocating sliding. This ensures the clamping block moves precisely towards the clamping cavity along the mounting groove. Furthermore, the adjusting wrench abuts against the clamping block, confining it within the mounting groove, eliminates the need for complex connecting structures or guiding components, simplifying the clamping device assembly process. Operators can quickly assemble the clamping device, reducing assembly difficulty and cost. Secondly, the mounting groove not only guides the clamping block but also provides a wrapping restraint, reducing deformation during long-term pressure on the support column. This prevents damage due to excessive localized stress, improves the structural strength and stress stability of the clamping device, reduces the probability of wear and damage to clamping components, and significantly extends the service life of the clamping device.

[0011] Preferably, the surface of the hinge end has an eccentric portion. When the adjusting wrench is in the locked position, the eccentric portion abuts against the clamping block to push the clamping block into the clamping cavity. When the adjusting wrench is in the unlocked position, the eccentric portion is offset from the clamping block to release the clamping block. By adopting the aforementioned technical solution, the eccentric structure at the hinge end converts the rotational force of the adjusting plate into a pushing force on the clamping block. The eccentric part can form a stable abutting pressure on the clamping cavity, and after the adjusting wrench reaches the locked position, the structure of the eccentric part can achieve self-locking. Even when subjected to external impact or vibration, it is not easy to loosen, which can effectively avoid the possibility of the clamping block rebounding, further improving the locking reliability of the clamping device and ensuring the safety of the tool cart during use. In addition, the eccentric structure of the eccentric part utilizes the lever principle and eccentric mechanical characteristics to significantly reduce the force required for the operator to rotate the adjusting wrench. During the rotation of the adjusting wrench, the pushing force on the clamping block can be gradually amplified, and the clamping block can be quickly advanced and locked without the operator having to apply a large force, which significantly reduces the operating intensity of the clamping device.

[0012] Preferably, the mounting groove is provided with a through hole communicating with the clamping cavity, and the clamping block includes a clamping part. When the adjusting wrench is in the locked position, the clamping part extends into the clamping cavity through the through hole.

[0013] Preferably, the clamping block further includes an abutment portion that abuts against the adjusting wrench. The clamping device has two first elastic elements, which are located on both sides of the clamping portion and confined between the abutment portion and the bottom wall of the mounting groove near the clamping cavity. The bottom wall is provided with a boss for positioning the first elastic elements. Using the aforementioned technical solution, the two first elastic elements are arranged on both sides of the clamping portion. The reset force of the first elastic elements can act evenly on the abutment portion, providing a balanced and sufficient reset force to the clamping portion. This avoids tilting or jamming during clamping block reset, ensuring the clamping block resets smoothly along the mounting groove. This ensures the clamping block can quickly and smoothly exit the clamping cavity, achieving precise response to the clamping block unlocking action. Furthermore, when the clamping block is locked, the first elastic elements are uniformly compressed, forming a symmetrical reverse force on the clamping block. Combined with the pushing force of the eccentric portion, this makes the force on the clamping block more balanced, thereby ensuring that the clamping surface of the clamping portion is evenly attached to the surface of the support column, making the clamping... The force distribution is more even and reasonable, avoiding localized force concentration that could lead to loosening of the lock or damage to the clamping block. This significantly improves the force balance and locking stability of the clamping device, further enhancing the locking effect. Secondly, the boss can precisely limit one end of the first elastic element, ensuring that the first elastic element always extends and retracts along the preset trajectory, reducing unnecessary friction between the first elastic element and surrounding components, reducing wear and tear, and extending the service life of the first elastic element. At the same time, the precisely positioned first elastic element can ensure the stable transmission of the reset force, avoiding insufficient reset force or uneven force due to the first elastic element's offset, further improving the overall stability of the clamping device.

[0014] Preferably, the support column and clamping cavity are cylindrical structures, with the diameter of the clamping cavity being larger than the diameter of the support column. The side of the clamping part facing the clamping cavity is the clamping surface, which is an arc surface. By adopting the aforementioned technical solution, both the support column and the clamping cavity are cylindrical structures, and the diameter of the clamping cavity is larger than the diameter of the support column. This provides sufficient space for the installation and sliding of the support column, ensuring that the height of the platform can be smoothly adjusted along the support column, while also allowing for a reasonable stroke for the clamping action of the clamping part. Furthermore, the arc surface of the clamping part allows the curvature of the clamping surface to precisely match the outer contour of the cylindrical support column, effectively increasing the contact area between the clamping surface and the support column. This ensures that the clamping force is evenly distributed on the surface of the support column, enhancing the locking reliability of the clamping device. Compared to square tubes, the cylindrical structure of the support column reduces frictional wear during installation, sliding, and clamping of the clamping device. This effectively prevents scratches, extrusion deformation, and other damage to the support column surface caused by the clamping device, significantly extending the service life of the support column and clamping part, thereby reducing the replacement and maintenance costs of the clamping device and support column. Secondly, the cylindrical structure allows the support column to rotate flexibly and slide smoothly within the clamping cavity, ensuring that the height of the storage platform is adjusted without jamming or interference, thus improving the smoothness of the height adjustment of the storage platform.

[0015] Preferably, the storage platform includes a placement plate and side plates disposed around the periphery of the placement plate. The ends of two adjacent side plates form corners. The outer surface of the base contacts the two side plates at the corners and is connected by a first fastener. Using the aforementioned technical solution, the outer surface of the base and the two side plates at the corners form a surface contact fit, which can significantly increase the contact area between the base and the storage platform, improving the connection stability between the base and the storage platform. Furthermore, the clamping device is installed on the inner side of the corners, and the two adjacent side plates can protect the clamping device, reducing the possibility of impact and helping to extend the service life of the clamping device. Secondly, the side plates can also provide stable installation support for the base, eliminating the need for additional mounting brackets on the storage platform, simplifying the structural design of the storage platform, saving installation space for the clamping device, and improving the overall aesthetics and structural regularity of the tool cart.

[0016] Preferably, the clamping device further includes a cover plate, which comprises a top cover and two side covers. The top cover is mounted on the top of the base via a second fastener, and the two side covers are located on the outer sides of the corners. The first fastener passes through the side covers and side plates and is fixedly connected to the base. Using the aforementioned technical solution, the cover plate can effectively protect the clamping device, reducing the entry of dust, oil, and debris into the base, lowering the possibility of jamming, wear, or corrosion of the clamping blocks, and helping to extend the service life of the clamping device. Furthermore, the top cover is fixedly connected to the top of the base, and the side covers are fixedly connected to the sides of the base, providing multi-directional fixation to the base, reducing the possibility of loosening during long-term use, and thus significantly improving the connection stability between the clamping device and the storage platform. Additionally, the two side covers are located on the outer sides of the corners, and their cooperation with the top cover makes the connection between the clamping device and the storage platform more regular, reducing the exposure of the base and clamping blocks, and helping to improve the overall aesthetics of the tool cart.

[0017] Preferably, the tool cart further includes several modular components, each of which includes a first disassembly device. The first disassembly device includes a first clamp and a second clamp hinged together. The first clamp is equipped with a locking element, and the second clamp has a slot for the locking element to be inserted. The locking element includes a locking rod rotatably connected to the first clamp and a locking head threadedly connected to the locking rod. The locking rod is inserted into the slot, and the locking head rotates and moves towards the first clamp to push the second clamp towards the first clamp. Using the aforementioned technical solution, the first disassembly device enables rapid installation and disassembly of the modular components and support columns without the need for complex tools, significantly reducing the installation and disassembly time of the modular components, improving operational convenience, and facilitating the flexible addition, removal, or replacement of modular components according to usage needs, thus increasing the tool cart's usability.

[0018] Preferably, the tool cart further includes a base and a roller assembly. The roller assembly includes a second disassembly device and rollers, with the second disassembly device detachably connected to the base. Using the aforementioned technical solution, the roller assembly is detachably connected to the base via the second disassembly device, enabling rapid assembly and disassembly of the roller assembly without the need for specialized tools. This significantly reduces assembly and disassembly time, facilitates subsequent maintenance and replacement of the rollers, and substantially improves the efficiency of roller assembly assembly and disassembly.

[0019] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0020] The invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a tool cart according to the present invention;

[0022] Figure 2 This is a schematic diagram of the clamping device and support column in a tool cart according to the present invention;

[0023] Figure 3 This is a cross-sectional view of a clamping device and support column in a tool cart according to the present invention;

[0024] Figure 4 This is a schematic diagram of the clamping device in a tool cart according to the present invention;

[0025] Figure 5 This is an exploded view of a clamping device in a tool cart according to the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the base in a tool cart according to the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a clamping block in a tool cart according to the present invention;

[0028] Figure 8 This is a partially enlarged view of a storage platform and clamping device in a tool cart according to the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of a cover plate in a tool cart according to the present invention;

[0030] Figure 10 This is a partially enlarged view of the connection between the modular components and the support column in a tool cart according to the present invention;

[0031] Figure 11 This is a schematic diagram of the handle and the first disassembly device in a tool cart according to the present invention;

[0032] Figure 12This is a schematic diagram of the roller assembly in a tool cart according to the present invention;

[0033] Figure 13 This is a schematic diagram of the structure of the second disassembly device in a tool cart according to the present invention;

[0034] Figure 14 This is a cross-sectional view of the second disassembly device in a tool cart according to the present invention.

[0035] Reference numerals: 1. Storage platform; 11. Placement plate; 12. Side plate; 13. Mounting bracket; 2. Support column; 3. Clamping device; 31. Base; 311. Clamping cavity; 312. Mounting groove; 3121. Through hole; 3122. Boss; 313. Lug; 3131. Shaft hole; 314. First threaded hole; 315. Second threaded hole; 32. Clamping block; 321. Clamping part; 3211. Clamping surface; 322. Abutment part; 323. First elastic element; 33. Adjusting wrench; 331. Hinge end; 3311. Offset 332. Core; 4. Shaft; 50. Cover plate; 41. Top cover; 42. Side cover; 50. First disassembly device; 501. First clamp; 502. Second clamp; 5021. Slot; 5031. Locking rod; 5032. Locking head; 51. Handle; 52. Folding platform; 53. Storage box; 6. Roller assembly; 61. Second disassembly device; 611. Mounting base; 612. Dovetail groove; 613. Notch; 614. Locking wrench; 615. Locking block; 616. Connecting rod; 617. Second elastic element; 62. Roller. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] like Figures 1 to 14 As shown in the figure, this embodiment illustrates a tool cart, including four support columns 2 and at least two storage platforms 1. Each storage platform 1 has through holes at its four corners for the support columns 2 to pass through, and a support column 2 passes through each corner hole. Multiple storage platforms 1 are installed along the axial direction of the support columns 2 to form a multi-layered platform for placing objects. Two of the storage platforms 1 are located at the top and bottom ends of the support columns 2, respectively. Clamping devices 3 are installed at the corners of each storage platform 1. The clamping device 3 includes a base 31 and a sliding mechanism. A clamping block 32 is provided on the base 31 and an adjusting wrench 33 is hinged to the base 31. The base 31 has a clamping cavity 311 in the middle for the support column 2 to pass through. The clamping block 32 is elastically loaded to have a tendency to move away from the clamping cavity 311. The adjusting wrench 33 has a locking position for pushing the clamping block 32 into the clamping cavity 311 and an unlocking position for releasing the clamping block 32. The clamping block 32 extends into the clamping cavity 311 to lock the support column 2 with the clamping device 3, thereby fixing the storage platform 1 and the support column 2.

[0040] In this embodiment, the clamping block 32 is slidably assembled onto the base 31, meaning the clamping block 32 and the base 31 are separate structures. When the clamping block 32 or the base 31 is worn, deformed, or damaged, only the clamping block 32 or the base 31 needs to be replaced individually, which can significantly reduce the maintenance cost of the clamping device 3 and improve its maintenance efficiency. Additionally, the base 31 has a through hole for the support column 2 to pass through. When the adjusting wrench 33 is in the locked position, the clamping block 32 enters the clamping cavity 311 to lock the support column 2. When the adjusting wrench 33 is in the unlocked position, the clamping block 32 moves away from the clamping cavity 311 to release the lock on the support column 2. The diameter of the through hole in the base 31 is... The diameter of the base 31 is larger than that of the support column 2. In the unlocked state, the relative sliding between the base 31 and the support column 2 is smoother, reducing the possibility of jamming during the adjustment of the storage platform 1. This makes the adjustment of the storage platform 1 smoother and helps improve the user experience. Secondly, the locking and unlocking of the support column 2 by the clamping device 3 is formed by the sliding of the clamping block 32. After long-term use, the clamping block 32 and the base 31 are not easily deformed. Therefore, it can be ensured that the clamping block 32 can move away from the support column 2 to achieve the unlocking effect, making the adjustment of the storage platform 1 smoother. Furthermore, the clamping block 32 is elastically loaded. When the adjusting wrench 33 is in the unlocked position, the clamping block 32 can... The system responds quickly and automatically resets to release the support column 2, preventing jamming between the support column 2 and the base 31, ensuring smooth adjustment of the platform 1, and significantly extending the service life of the clamping device 3. Furthermore, during the machining process, the diameter of the through hole in the clamping device 3 only needs to be larger than the diameter of the support column 2, reducing the precision requirements and manufacturing costs. Moreover, since the clamping device 3 is mounted on the support column 2, the platform 1 can slide along the support column 2 via the clamping device 3, allowing for arbitrary height fixation of the platform 1 on the support column 2. This enables stepless adjustment of the platform 1, compared to adjusting the support column... Adjustment holes are provided on the 2 to determine the adjustment position of the storage platform 1. The storage platform 1 has a more flexible adjustment range. Operators can flexibly adjust the spacing between each layer of the storage platform 1 according to the height and volume of the stored items and their usage habits, adapting to the needs of storing tools and materials of different sizes and using habits, which can effectively expand the applicability of the tool cart. In addition, by adjusting the rotation of the wrench 33, the clamping block 32 can be pressed and unlocked against the support column 2 without the need for additional tools. It can quickly switch between locking and unlocking states, making the adjustment process of the clamping device 3 simpler and more time-saving and labor-saving, effectively reducing the workload of operators and improving operating efficiency.

[0041] Specifically, in this embodiment, a mounting groove 312 is provided on one side of the base 31. The hinge end 331 of the adjusting wrench 33 is located at the opening of the mounting groove 312. The clamping block 32 is slidably fitted into the mounting groove 312, and the end of the clamping block 32 away from the clamping cavity 311 abuts against the hinge end 331. When the adjusting wrench 33 rotates to the locking position, it pushes the clamping block 32 into the clamping cavity 311 through the hinge end 331. The adjusting wrench 33 and the base 31 restrict the clamping block 32 within the mounting groove 312, preventing the clamping block 32 from detaching from the mounting groove 312. The mounting groove 312 can provide precise guidance for the clamping block 32, effectively limiting the sliding trajectory of the clamping block 32 and reducing the occurrence of offset or tilting during the reciprocating sliding process, ensuring that the clamping block 32 can move along the mounting groove 312. 12 moves precisely toward the clamping cavity 311; in addition, the adjusting wrench 33 abuts against the clamping block 32 and confines it within the mounting groove 312, eliminating the need for additional complex connection structures or guide components, making the assembly process of the clamping device 3 simpler, allowing operators to quickly complete the assembly of the clamping device 3, which helps reduce the assembly difficulty and cost of the clamping device 3; secondly, the mounting groove 312 not only guides the clamping block 32, but also forms a wrapping limit on the clamping block 32, thereby reducing the deformation of the clamping block 32 during long-term pressing of the support column 2, avoiding damage to the clamping block 32 due to excessive local force, improving the structural strength and stress stability of the clamping device 3, reducing the probability of wear and damage to the clamping part 321, and significantly extending the service life of the clamping device 3.

[0042] Specifically, in this embodiment, the outer surface of the base 31 is provided with a lug 313 extending away from the clamping cavity 311. The lug 313 is formed at the opening of the mounting groove 312, and a shaft hole 3131 is provided on the lug 313. The hinge end 331 of the adjusting wrench 33 has a rotating shaft 332. The adjusting wrench 33 is hinged to the shaft hole 3131 through the rotating shaft 332 and thus rotatably connected to the base 31. The surface of the hinge end 331 has an eccentric portion 3311. The base has an arc-shaped curved surface. When the adjusting wrench 33 is in the locked position, the adjusting wrench 33 is entirely fitted against the outer surface of the base 31. At this time, the eccentric part 3311 abuts against the clamping block 32, and the clamping block 32 partially extends into the clamping cavity 311 under the pushing of the eccentric part 3311, thereby locking the support column 2. When the adjusting wrench 33 is in the unlocked position, the adjusting wrench 33 separates from the outer surface of the base 31. At this time, the eccentric part 3311 and the clamping block 32 are misaligned, thereby releasing the clamping block 32. 2. Under the action of elastic force, it moves away from the clamping cavity 311, thereby unlocking the support column 2. The eccentric structure of the hinge end 331 converts the rotational force of the adjusting plate into the pushing force on the clamping block 32. The eccentric part 3311 can form a stable abutting pressure on the clamping cavity 311. After the adjusting wrench 33 reaches the locked position, the structure of the eccentric part 3311 can achieve self-locking. Even when subjected to external impact or vibration, it is not easy to loosen. It can effectively avoid the possibility of the clamping block 32 rebounding, further improving the locking reliability of the clamping device 3 and ensuring the safety of the tool cart during use. In addition, the eccentric structure of the eccentric part 3311 utilizes the lever principle and eccentric mechanical characteristics to greatly reduce the force required for the operator to rotate the adjusting wrench 33. During the rotation of the adjusting wrench 33, the pushing force on the clamping block 32 can be gradually amplified. The clamping block 32 can be quickly advanced and locked without the operator applying a large force, which significantly reduces the operating intensity of the clamping device 3.

[0043] Specifically, in this embodiment, the clamping block 32 includes a clamping part 321 and an abutting part 322. The clamping part 321 is located on the side of the clamping block 32 near the clamping cavity 311, and the abutting part 322 is located on the side of the clamping block 32 near the adjusting wrench 33. The mounting groove 312 is provided with a through hole 3121 communicating with the clamping cavity 311. In this embodiment, both the support column 2 and the clamping cavity 311 are cylindrical structures. The diameter of the clamping cavity 311 is larger than the diameter of the support column 2. The side of the clamping part 321 facing the clamping cavity 311 is the clamping surface 3211, and the clamping surface 3211 is an arc surface. The surface of the abutment part 322 is also an arc surface. Both the support column 2 and the clamping cavity 311 adopt a cylindrical structure, and the diameter of the clamping cavity 311 is larger than the diameter of the support column 2. This provides sufficient space for the installation and sliding of the support column 2, ensuring that the height of the storage platform 1 can be smoothly adjusted along the support column 2. It also allows for a reasonable stroke for the clamping action of the clamping part 321. In addition, the clamping surface 3211 of the clamping part 321 adopts an arc surface, so that the curvature of the clamping surface 3211 can be precisely matched with the outer contour of the cylindrical support column 2. This can effectively increase the contact area between the clamping surface 3211 and the support column 2, making the clamping action more efficient. The force is evenly distributed on the surface of the support column 2, enhancing the locking reliability of the clamping device 3. Furthermore, the cylindrical structure of the support column 2, compared to a square tube, reduces frictional wear of the clamping device 3 during installation, sliding, and clamping. This effectively prevents scratches, extrusion deformation, and other damage to the surface of the support column 2 caused by the clamping device 3, significantly extending the service life of the support column 2 and the clamping part 321, thereby reducing the replacement and maintenance costs of the clamping device 3 and the support column 2. Secondly, the cylindrical structure allows the support column 2 to rotate flexibly and slide smoothly within the clamping cavity 311, ensuring secure placement. When the height of the platform 1 is adjusted along the support column 2, there is no jamming or interference, thus improving the smoothness of the height adjustment of the platform 1. In addition, under the action of elastic force, the clamping block 32 keeps the abutment part 322 in contact with the hinge end 331. As the adjusting wrench 33 rotates, the hinge end 331 will roll into contact with the abutment part 322. The abutment part 322 adopts an arc surface, which makes the rotation of the adjusting wrench 33 smoother, avoids jamming of the adjusting wrench 33, reduces the external force required for the adjustment of the adjusting wrench 33, and makes the rotation of the adjusting wrench 33 simpler and less strenuous.

[0044] Specifically, in this embodiment, the clamping device 3 has two first elastic elements 323. The two first elastic elements 323 are located on both sides of the clamping part 321 and are confined between the abutment part 322 and the bottom wall of the mounting groove 312 near the clamping cavity 311. The bottom wall is provided with a boss 3122 for positioning the first elastic elements 323. The two first elastic elements 323 are arranged on both sides of the clamping part 321. The reset elastic force of the first elastic elements 323 can be evenly applied to the abutment part 322, providing a balanced and sufficient reset elastic force to the clamping part 321, avoiding tilting or jamming when the clamping block 32 is reset, so that the clamping block 32 can be reset smoothly along the mounting groove 312, ensuring that the clamping block 32 can quickly and smoothly exit the clamping cavity 311, and achieving a precise response to the unlocking action of the clamping block 32. In addition, when the clamping block 32 is locked, the first elastic elements 323 are evenly compressed, which can form a symmetrical reverse action on the clamping block 32. The force, combined with the pushing force of the eccentric part 3311, makes the force on the clamping block 32 more balanced, thereby ensuring that the clamping surface 3211 of the clamping part 321 is evenly attached to the surface of the support column 2, making the distribution of clamping force more uniform and reasonable, avoiding local force concentration that could lead to locking loosening or damage to the clamping block 32. This can significantly improve the force balance and locking stability of the clamping device 3, further enhancing the locking effect. Secondly, the boss 3122 can accurately limit one end of the first elastic element 323, ensuring that the first elastic element 323 always extends and retracts along the preset trajectory, reducing unnecessary friction between the first elastic element 323 and surrounding components, reducing wear and tear, and extending the service life of the first elastic element 323. At the same time, the precisely positioned first elastic element 323 can ensure the stable transmission of the reset elastic force, avoiding insufficient reset force or uneven force due to the offset of the first elastic element 323, further improving the overall stability of the clamping device 3.

[0045] Specifically, in this embodiment, the storage platform 1 includes a placement plate 11 and side plates 12 disposed around the placement plate 11. The ends of two adjacent side plates 12 form corners. The outer surface of the base 31 contacts the two side plates 12 at the corners and is connected by a first fastener. The outer surface of the base 31 forms two mutually perpendicular planes. The base 31 forms a surface contact with the two side plates 12 at the corners through the two planes, which can significantly increase the contact area between the base 31 and the storage platform 1 and improve the connection stability between the base 31 and the storage platform 1. In addition, the clamping device 3 is installed on the inner side of the corners. The two adjacent side plates 12 can protect the clamping device 3, reduce the possibility of the clamping device 3 being bumped, and help extend the service life of the clamping device 3. Secondly, the side plates 12 can also provide stable installation support for the base 31, eliminating the need to add additional installation brackets to the storage platform 1, simplifying the structural design of the storage platform 1, saving the installation space of the clamping device 3, and improving the overall aesthetics and structural regularity of the tool cart.

[0046] Specifically, in this embodiment, the clamping device 3 further includes a cover plate 4, which includes a top cover 41 and two side covers 42. The outer side of the base 31 is provided with a first threaded hole 314, and the top of the base 31 is provided with a second threaded hole 315. The top cover 41 is mounted on the top of the base 31 by a second fastener. The two side covers 42 are located on the outer side of the corners. The first fastener passes through the side covers 42 and the side plate 12 and is fixedly connected to the base 31. After the cover plate 4 is connected to the clamping device 3, it can cover the corners of the storage platform 1. The cover plate 4 can effectively protect the clamping device 3, reducing the entry of dust, oil, debris, etc., into the interior of the base 31, thus reducing... The reduced likelihood of the clamping block 32 getting stuck, worn, or corroded helps extend the service life of the clamping device 3. Furthermore, the top cover 41 is fixedly connected to the top of the base 31, and the side cover 42 is fixedly connected to the side of the base 31. The cover plate 4 can provide multi-directional fixation to the base 31, reducing the possibility of the clamping device 3 loosening during long-term use, thus significantly improving the connection stability between the clamping device 3 and the storage platform 1. Additionally, the two side covers 42 are located on the outer side of the corners. The cooperation between the side covers 42 and the top cover 41 makes the connection between the clamping device 3 and the storage platform 1 more regular, reducing the exposure of the base 31 and the clamping block 32, and helping to improve the overall aesthetics of the tool cart.

[0047] Specifically, the tool cart in this embodiment further includes several modular components, each including a functional component and a first disassembly device 50. The first disassembly device 50 includes a first clamp 501 and a second clamp 502 hinged together. The functional component is fixedly connected to the first clamp 501. After the first clamp 501 and the second clamp 502 are closed, they can be fitted onto the support column 2. One end of the first clamp 501 is connected to the second clamp 502, and the other end is equipped with a locking component. One end of the second clamp 502 is connected to the first clamp 501, and the other end is provided with a slot 5021 for the locking component to be inserted. The locking component includes a locking rod 5031 rotatably connected to the first clamp 501, and a locking head 5032 threadedly connected to the locking rod 5031. During assembly, the first clamp... The first clamp 501 and the second clamp 502 are closed to fit onto the support column 2. Then, the locking member is rotated to insert into the slot 5021 of the second clamp 502. Finally, by rotating the locking head 5032, the locking head 5032 is brought close to the first clamp 501. During the screwing process of the locking head 5032, the locking head 5032 abuts against the second clamp 502 and pushes the second clamp 502 and the first clamp 501 to lock the support column 2, thereby realizing the locking of the first disassembly device 50 and the support column 2. The first disassembly device 50 can realize the quick installation and disassembly of the module component and the support column 2 without the need for complicated tools, which greatly shortens the installation and disassembly time of the module component, improves the convenience of operation, and makes it easy to flexibly add, remove or replace the module component according to the use needs, increasing the flexibility of the tool cart.

[0048] It should be noted that the functional component described in this embodiment can be a handle 51, which can be detachably installed on the support column 2 via the first disassembly device 50; or the functional component can be a folding platform 52, which can be detachably installed on the support column 2 via the first disassembly device 50; or the functional component can be a storage box 53, which can be detachably installed on the support column 2 via the first disassembly device 50; or the functional component can be other functional parts.

[0049] Specifically, in this embodiment, the tool cart further includes a base and a roller assembly 6. The roller assembly 6 includes a second disassembly device 61 and a roller 62. The second disassembly device 61 is detachably connected to the base and includes a mounting base 611, a locking block 615 movably disposed within the mounting base 611, and a locking wrench 614 connected to the locking block 615. The roller 62 is connected to the bottom of the mounting base 611. The upper surface of the mounting base 611 is provided with a dovetail groove 612. The base is provided with a mounting bracket 13 that can be inserted into the dovetail groove 612 and matches the structure of the dovetail groove 612. A notch 613 is provided on one side wall of the dovetail groove 612. The locking block 615 slides within the mounting base 611 through the notch 613 and enters into the dovetail groove 612 to lock the mounting bracket 13. The locking block 615 is away from the dovetail groove 612. With the unlock mounting bracket 13, the locking block 615 is connected to the locking wrench 614 via the connecting rod 616. One end of the connecting rod 616 extends out of the side of the mounting base 611 and is rotatably connected to the locking wrench 614. A second elastic element 617 is fitted on the connecting rod 616. One end of the second elastic element 617 abuts against the locking block 615, so that the locking block 615 has a tendency to move away from the dovetail groove 612. The structure of the locking wrench 614 is similar to that of the adjusting wrench 33, and will not be described in detail here. The roller assembly 6 is detachably connected to the base via the second disassembly device 61, realizing the quick disassembly and assembly of the roller assembly 6. Without the aid of special tools, the installation and disassembly of the roller assembly 6 can be completed quickly, greatly shortening the disassembly and assembly time, facilitating the subsequent maintenance and replacement of the roller 62, and significantly improving the disassembly and assembly efficiency of the roller assembly 6.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A tool cart, characterized in that, The device includes a support column and a storage platform. The storage platform has a through hole for the support column to pass through. The storage platform is connected to the support column via a clamping device. The clamping device includes a base, a clamping block slidably disposed on the base, and an adjusting wrench hinged to the base. The base has a clamping cavity in the middle for the support column to pass through. The clamping block is elastically loaded to have a tendency to move away from the clamping cavity. The adjusting wrench has a locking position for pushing the clamping block into the clamping cavity and an unlocking position for releasing the clamping block. The clamping block extends into the clamping cavity to lock the support column with the clamping device.

2. A tool cart according to claim 1, characterized in that, The base has a mounting groove on one side, the hinge end of the adjusting wrench is located at the opening of the mounting groove, the clamping block is slidably assembled in the mounting groove, and the end of the clamping block away from the clamping cavity abuts against the hinge end. The adjusting wrench rotates to the locking position and pushes the clamping block into the clamping cavity through the hinge end.

3. A tool cart according to claim 2, characterized in that, The surface of the hinge end has an eccentric portion. When the adjusting wrench is in the locked position, the eccentric portion abuts against the clamping block to push the clamping block into the clamping cavity. When the adjusting wrench is in the unlocked position, the eccentric portion is offset from the clamping block to release the clamping block.

4. A tool cart according to claim 2, characterized in that, The mounting groove is provided with a through hole communicating with the clamping cavity. The clamping block includes a clamping part. When the adjusting wrench is in the locked position, the clamping part extends into the clamping cavity through the through hole.

5. A tool cart according to claim 4, characterized in that, The clamping block also includes an abutment portion that abuts against the adjusting wrench. The clamping device has two first elastic elements, which are located on both sides of the clamping portion and confined between the abutment portion and the bottom wall of the mounting groove near the clamping cavity. The bottom wall is provided with a boss for positioning the first elastic elements.

6. A tool cart according to claim 1, characterized in that, The support column and clamping cavity are cylindrical structures. The diameter of the clamping cavity is larger than the diameter of the support column. The side of the clamping block facing the clamping cavity is the clamping surface, which is an arc surface.

7. A tool cart according to claim 1, characterized in that, The storage platform includes a placement plate and side plates disposed around the periphery of the placement plate. The ends of two adjacent side plates form corners. The outer side of the base contacts the two side plates at the corners and is connected by a first fastener.

8. A tool cart according to claim 7, characterized in that, The clamping device further includes a cover plate, which includes a top cover and two side covers. The top cover is mounted on the top of the base by a second fastener, and the two side covers are located on the outer side of the corners. The first fastener passes through the side covers and side plates and is fixedly connected to the base.

9. A tool cart according to claim 1, characterized in that, The tool cart also includes several modular components, each of which includes a first disassembly device. The first disassembly device includes a first clamp and a second clamp that are hinged to each other. The first clamp is equipped with a locking element, and the second clamp is provided with a slot for the locking element to be inserted. The locking element includes a locking rod that is rotatably connected to the first clamp and a locking head that is threadedly connected to the locking rod. The locking rod is inserted into the slot, and the locking head rotates and moves toward the first clamp to push the second clamp to close toward the first clamp.

10. A tool cart according to claim 1, characterized in that, The tool cart also includes a base and a roller assembly, the roller assembly including a second disassembly device and rollers, the second disassembly device being detachably connected to the base.

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