Wheel limiter for trolley

Abstract

The present invention relates to the technical field of wheel limiting, and in particular to a wheel limiter for a trolley, comprising a limiting seat and a limiting assembly; the limiting seat comprising a limiting platform, the surface of which is provided with a plurality of plug-in interfaces; the limiting assembly comprising a mounting box, a limiting rod, and a fixing block; the mounting box having a first nail post adapted to the plug-in interface, one end of the limiting rod being hinged to the mounting box, the fixing block being slidably mounted on the rod body of the limiting rod, and the fixing block having a second nail post adapted to the plug-in interface. The present invention can prevent a trolley from moving on its own without human operation.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel limiting, in particular to a wheel limiter for a trolley. Background Art

[0002] In semiconductor production workshops, trolleys are widely used to transport wafer sources, chemical solutions, equipment spare parts, and more between various processes. See Chinese Utility Model Patent Application No. 200920207708.9, which discloses a "semiconductor process trolley." However, due to the difficulty in accurately parking trolleys, trolleys often move without human intervention and collide with surrounding equipment, electrical wiring, and wall coverings, causing loose connections, power outages, and wall coverings to peel. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a wheel limiter for a trolley to prevent the trolley from moving on its own without human operation.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a wheel limiter for a trolley comprises a limit seat and a limit assembly; the limit seat comprises a limit platform, and a plurality of plug interfaces are provided on the surface of the limit platform;

[0005] The limiting assembly includes an installation box, a limiting rod and a fixed block; the installation box has a first nail column adapted to the plug interface, one end of the limiting rod is hinged to the installation box, the fixed block is slidably arranged on the rod body of the limiting rod, and the fixed block has a second nail column adapted to the plug interface.

[0006] Furthermore, the installation box also includes a base, a latch is provided on the top of the base, and a first sleeve adapted to the latch is provided at one end of the limiting rod.

[0007] Furthermore, at least two latches are provided along the contour of the top of the base.

[0008] Furthermore, a placement groove is provided on the base, and the latch is located in the placement groove.

[0009] Furthermore, the installation box further includes a decorative cover, which is snap-connected to the base and is used to cover the top of the base.

[0010] Furthermore, the fixing block also includes a second sleeve, which is sleeved on the rod body of the limiting rod, and one end of the second nail column is connected to the outer side wall of the second sleeve.

[0011] Furthermore, a reinforcement piece is provided on one end of the second nail column connected to the second sleeve.

[0012] Furthermore, at least two first nail posts are provided on the installation box.

[0013] Furthermore, the limiting seat also includes a support plate and a reinforcing rib; the bottom surface of the limiting platform is provided with a support plate along the contour, and the reinforcing rib is provided on the bottom surface of the limiting platform.

[0014] The beneficial effects of the present invention are as follows: the installation box of the limiting component is inserted into the plug interface of the limiting platform through the first nail column, so that the installation box can be fixedly placed on the limiting seat. The second nail column on the limiting rod of the limiting component is inserted into the plug interface of the limiting platform through the fixed block, so that the limiting rod is fixed above the limiting platform; and in the process of inserting the second nail column into the plug interface of the limiting platform, by swinging the limiting rod and sliding the fixed block on the rod body of the limiting rod, the second nail column can be easily aligned with the plug interface to be inserted. During application, the limiting rod is used to abut against the wheel of the trolley, so that the trolley leans against the limiting component, thereby preventing the trolley from moving on its own under non-human operation. At the same time, the limiting seat is embedded in the ground, which can further facilitate the staff to move the trolley to the limiting platform and allow the wheel of the trolley to abut against the limiting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a wheel restraint for a trolley in a specific embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the exploded structure of a limit seat of a wheel restraint for a trolley in a specific embodiment of the present invention;

[0017] Figure 3 This is a schematic structural diagram of a fixed block of a wheel restraint for a trolley in a specific embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the bottom structure of a limiting seat of a wheel limiter for a trolley in a specific embodiment of the present invention;

[0019] Description of labels:

[0020] 1. Limit seat; 11. Limit platform; 111. Plug interface; 12. Support plate; 13. Reinforcement rib;

[0021] 2. Restriction assembly; 21. Mounting box; 211. First nail post; 212. Base; 2121. Latch; 2122. Mounting slot; 213. Decorative cover;

[0022] 22. Limit rod; 221. First shaft sleeve;

[0023] 23. Fixing block; 231. Second nail column; 2311. Reinforcement member; 232. Second shaft sleeve. DETAILED DESCRIPTION

[0024] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0025] In semiconductor production workshops, trolleys are widely used to transport wafer sources, chemical solutions, equipment spare parts, and more between various processes. See Chinese Utility Model Patent Application No. 200920207708.9, which discloses a "semiconductor process trolley." However, due to the difficulty in accurately parking trolleys, trolleys often move without human intervention and collide with surrounding equipment, electrical wiring, and wall coverings, causing loose connections, power outages, and wall coverings to peel.

[0026] Based on this, the present application provides a wheel limiter for a trolley, which can solve the problem that the trolley moves on its own without human operation.

[0027] Please refer to Figures 1 to 3 As shown, in one embodiment, a wheel limiter for a trolley includes a limit seat 1 and a limit assembly 2; the limit seat 1 includes a limit platform 11, and a plurality of plug interfaces 111 are provided on the table surface of the limit platform 11; the limit assembly 2 includes a mounting box 21, a limit rod 22 and a fixed block 23; the mounting box 21 has a first nail column 211 adapted to the plug interface 111, one end of the limit rod 22 is hinged to the mounting box 21, and the fixed block 23 is slidably arranged on the rod body of the limit rod 22, and the fixed block 23 has a second nail column 231 adapted to the plug interface 111.

[0028] Assembly of the wheelbarrow limiter: The installation box 21 of the limit assembly 2 is inserted into the insertion port 111 of the limit platform 11 via the first nail post 211, allowing the installation box 21 to be securely placed on the limit seat 1. The second nail post 231 of the limit rod 22 of the limit assembly 2 is inserted into the insertion port 111 of the limit platform 11 via the fixing block 23, securing the limit rod 22 above the limit platform 11. Furthermore, during the insertion of the second nail post 231 into the insertion port 111 of the limit platform 11, the second nail post 231 can be aligned with the insertion port 111 by swinging the limit rod 22 and sliding the fixing block 23 on the rod of the limit rod 22.

[0029] Application of the trolley wheel limiter: The limit rod 22 contacts the trolley wheel, forcing the trolley to rest against the limit assembly 2, thereby preventing the trolley from moving without human intervention. The limit seat 1 can be embedded in the ground, so that the limit platform 11 is flush with the ground, making it easier for workers to move the trolley onto the limit platform 11.

[0030] Please refer to Figure 2 As shown, in one embodiment, the installation box 21 further includes a base 212, a latch 2121 is provided on the top of the base 212, and a first sleeve 221 is provided at one end of the limiting rod 22 to fit with the latch 2121. The first sleeve 221 on the limiting rod 22 is sleeved on the latch 2121 of the base 212, thereby achieving the swing of the limiting rod 22 on the installation box 21.

[0031] Alternatively, see Figure 2 As shown, a placement groove 2122 is provided on the base 212, and the latch 2121 is located in the placement groove 2122. The latch 2121 is arranged in the placement groove 2122 to avoid the overall height of the limit seat being too high, resulting in interference with the bottom of the trolley.

[0032] Alternatively, see Figure 2 As shown, the installation box 21 further includes a decorative cover 213, which is engaged with the base 212 and is used to shield the top of the base 212. The decorative cover 213 shields the top of the base 212, which not only protects the connection between the latch 2121 and the first sleeve 221, but also makes the installation box 21 more beautiful.

[0033] Please refer to Figure 1 and Figure 2 As shown, in a possible embodiment, at least two pins 2121 are provided along the contour of the top of the base 212, and each pin 2121 is connected to a limit rod 22 with a fixed block 23, wherein part of the limit rod 22 is used to limit the movement of the trolley, and the other part of the limit rod 22 is used to guide the rolling direction of the wheels of the trolley.

[0034] Please refer to Figure 3 As shown, in one embodiment, the fixing block 23 further includes a second sleeve 232, which is sleeved on the shaft of the limiting rod 22, and one end of the second nail column 231 is connected to the outer wall of the second sleeve 232. Since the second sleeve 232 is sleeved on the shaft of the limiting rod 22, the fixing block 23 can be easily moved on the shaft of the limiting rod 22.

[0035] Alternatively, see Figure 3 As shown, a reinforcement piece 2311 is provided on one end of the second nail column 231 connected to the second sleeve 232. The reinforcement piece 2311 reduces the risk of deformation or breakage at the connection between the second nail column 231 and the second sleeve 232, thereby ensuring that the second nail column 231 can smoothly enter and exit the plug interface 111.

[0036] Please refer to Figure 2As shown, in one embodiment, at least two first nail posts 211 are provided on the installation box 21. The multiple first nail posts 211 are subjected to force together, which can ensure the installation reliability of the installation box 21 on the limiting seat 1.

[0037] Please refer to Figure 4 As shown, in one embodiment, the limit seat 1 further includes a support plate 12 and reinforcement ribs 13; the support plate 12 is provided along the bottom surface of the limit platform 11, and the reinforcement ribs 13 are provided on the bottom surface of the limit platform 11. The limit seat 1 supports the limit platform 11 through the support plate 12, and the reinforcement ribs 13 prevent the limit platform 11 from collapsing, which would cause the installation of the limit assembly 2 on the limit seat 1 to fail.

[0038] Example 1

[0039] A wheel restraint for a trolley, see Figures 1 to 4 As shown, it includes a limit seat 1 and a limit assembly 2. The limit seat 1 includes a limit platform 11, the surface of which is provided with multiple plug-in ports 111. The limit assembly 2 includes a mounting box 21, a limit rod 22, and a fixed block 23. The mounting box 21 is provided with at least two first nail posts 211 that are compatible with the plug-in ports 111. One end of the limit rod 22 is hinged to the mounting box 21. The fixed block 23 is slidably mounted on the shaft of the limit rod 22. The fixed block 23 has a second nail post 231 that is compatible with the plug-in ports 111. The mounting box 21 also includes a base 212. At least two latches 2121 are provided along the top contour of the base 212. One end of the limit rod 22 is provided with a first shaft sleeve 221 that is compatible with the latches 2121. The base 212 is provided with a seating groove 2122, and the latch 2121 is located within the seating groove 2122. The mounting box 21 also includes a decorative cover 213, which is snap-fitted to the base 212 and serves to shield the top of the base 212. The fixing block 23 also includes a second sleeve 232, which is sleeved onto the shaft of the limiting rod 22. One end of the second post 231 is connected to the outer wall of the second sleeve 232. A reinforcement member 2311 is provided on the end of the second post 231 connected to the second sleeve 232.

[0040] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wheel restraint for a trolley, characterized in that: It includes a limit seat and a limit component; the limit seat includes a limit platform, and a plurality of plug interfaces are provided on the table of the limit platform; The limiting assembly includes a mounting box, a limiting rod and a fixing block; The installation box includes a base and a first nail column adapted to the plug interface. A latch is provided on the top of the base, and a first sleeve adapted to the latch is provided at one end of the limit rod. The fixing block includes a second shaft sleeve slidably mounted on the rod body of the limiting rod, and a second nail column adapted to the plug interface, wherein one end of the second nail column is connected to the outer side wall of the second shaft sleeve.

2. The wheel restraint for a trolley according to claim 1, characterized in that: At least two latches are arranged along the contour of the top of the base.

3. The wheel restraint for a trolley according to claim 1 or 2, characterized in that: The base is provided with a placement groove, and the latch is located in the placement groove.

4. The wheel restraint for a trolley according to claim 1, characterized in that: The installation box further comprises a decorative cover, which is snap-connected with the base and is used to shield the top of the base.

5. The wheel restraint for a trolley according to claim 1, characterized in that: A reinforcement piece is provided on one end of the second nail column connected to the second sleeve.

6. The wheel restraint for a trolley according to claim 1, characterized in that: At least two first nail posts are provided on the installation box.

7. The wheel restraint for a trolley according to claim 1, characterized in that: The limiting seat further comprises a support plate and a reinforcing rib; the bottom surface of the limiting platform is provided with a support plate along the contour, and the reinforcing rib is provided on the bottom surface of the limiting platform.

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