A kind of limiting mechanism of picking vehicle portal frame
By designing a limiting mechanism for the mast of the picking cart and using a limiting rod to mechanically lock the mast, the problems of cumbersome operation and safety risks during the maintenance of high-level picking carts are solved, achieving the effect of simplifying the maintenance process and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO RUYI JOINT CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-09
Smart Images
Figure CN224337153U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of picking carts, and specifically to a limiting mechanism for a picking cart mast. Background Technology
[0002] With the rapid development of the logistics industry, high-bay picking vehicles, as important equipment in warehousing and logistics, are widely used in the picking operations of various warehouses. High-bay picking vehicles are usually composed of a vehicle body, mast, lifting system, etc. Among them, the mast is one of the core components of the high-bay picking vehicle, which is used to support the lifting of the operating platform and goods.
[0003] However, existing high-level picking vehicles have the following problems when maintaining the hydraulic mechanism: First, the gantry needs to be raised to expose the hydraulic mechanism for maintenance; second, to prevent the gantry from accidentally falling and injuring personnel during maintenance, it is usually necessary to use a gantry crane to suspend the gantry or to place wooden blocks between the gantry and the ground for fixation, which is cumbersome and requires additional auxiliary equipment; finally, the operator needs to stand on the operating platform of the gantry and step on a pedal to control the raising and lowering of the gantry, which increases the complexity of maintenance and safety risks. These problems not only reduce maintenance efficiency but also increase safety hazards. Utility Model Content
[0004] This utility model addresses the aforementioned problems and aims to provide a limiting mechanism for a picking vehicle mast. The extension of the limiting rod can support the mast, improving maintenance convenience and reducing safety risks.
[0005] To achieve the above objectives, this utility model provides a limiting mechanism for a picking cart gantry, used to provide a mechanical limit for the lifting gantry to restrict its descent. The limiting mechanism includes:
[0006] A fixed base, located on one side of the gantry;
[0007] A limiting shaft is movably mounted on the fixed base. The limiting shaft is provided with a first limiting groove arranged at intervals for a second limiting groove, and the limiting shaft includes a first end for limiting the gantry. The limiting shaft has a first position in which the first end is retracted into the fixed base and a second position in which the first end is extended outside the fixed base.
[0008] A limiting baffle, which is movably mounted on the fixed base, is configured as follows:
[0009] The shaft can be selectively engaged in the first limiting groove to hold the limiting shaft in the first position or engaged in the second limiting groove to hold the limiting shaft in the second position.
[0010] When the gantry rises to a first preset height, the limiting shaft can be switched to a second position, and the first end of the limiting shaft can abut against the bottom of the gantry to restrict the gantry from descending.
[0011] According to the above-described limiting mechanism for a picking vehicle mast, the mast includes an outer mast, a middle mast that can be lifted and lowered inside the outer mast, and an inner mast that can be lifted and lowered inside the middle mast. A through area is provided between the two sides of the outer mast.
[0012] According to the above-described limiting mechanism for a picking vehicle mast, the fixing seat is fixed on one side of the outer mast, and the fixing seat has a mounting hole in the middle. The limiting shaft is movably inserted into the mounting hole and can be switched between a first position and a second position.
[0013] When the limiting shaft is in the second position, the first end of the limiting shaft is located directly below the middle gantry.
[0014] The aforementioned limiting mechanism for a picking car gantry further includes a limiting retaining ring, which is engaged at the second end of the limiting shaft, and the diameter of the limiting retaining ring is larger than the diameter of the mounting hole.
[0015] According to the above-described limiting mechanism for a picking car gantry, the limiting baffle is arranged vertically on the fixed seat. The limiting baffle includes a snap-fit end that can be snapped into a first limiting groove or a second limiting groove and an mounting end away from the snap-fit end. The mounting end is movably connected to the fixed seat via a mounting shaft.
[0016] According to the above-described limiting mechanism for a picking vehicle gantry, the mounting end is provided with an adjustment groove arranged in a vertical direction, and the mounting shaft is movably inserted into the adjustment groove.
[0017] According to the above-described limiting mechanism for a picking car gantry, the locking end is hook-shaped and has a downward-opening positioning groove. When the locking end is engaged in the first limiting groove or the second limiting groove, the limiting shaft is engaged in the positioning groove.
[0018] The limiting mechanism for a picking car door as described above further includes a locking handle, which is connected to the end of the mounting shaft away from the fixed seat and is used to clamp or release the limiting baffle.
[0019] According to the above-described limiting mechanism for a picking car door frame, the locking handle includes a gripping part and an abutting part. The abutting part is threadedly engaged with the mounting shaft and can abut against the outer side of the limiting baffle.
[0020] According to the above-described limiting mechanism for a picking cart gantry, the picking cart further includes a lifting switch, which is fixed to the body of the picking cart and used to control the raising or lowering of the gantry.
[0021] This utility model has the following beneficial effects:
[0022] 1. By setting a limit mechanism, when the gantry rises to the preset height, the gantry can be mechanically locked by the extension of the limit shaft, which avoids the need to prepare other hoisting equipment or pads, simplifies the maintenance operation process, and improves maintenance efficiency.
[0023] 2. By installing a lifting switch inside the cabin to control the raising or lowering of the gantry, the operator is prevented from standing on the gantry to operate the equipment, thus improving safety performance;
[0024] 3. A limiting retaining ring is provided on the second end of the limiting shaft, which can prevent the limiting shaft from disengaging from the fixed seat. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of the embodiment;
[0026] Figure 2 This is a schematic diagram of the limiting mechanism structure in an embodiment;
[0027] Figure 3 This is a schematic diagram of the limiting baffle structure in an embodiment;
[0028] Figure 4 This is a schematic diagram of the lifting switch assembly in an embodiment.
[0029] In the picture:
[0030] 100. Fixed base; 200. Limiting shaft; 210. First limiting groove; 220. Second limiting groove; 300. Limiting baffle; 310. Snap-fit end; 311. Positioning groove; 320. Mounting end; 321. Adjusting groove; 400. Limiting retaining ring; 500. Tightening handle; 510. Grip part; 520. Abutment part; 600. Gantry; 610. Outer gantry; 620. Middle gantry; 630. Inner gantry; 700. Lifting switch. Detailed Implementation
[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0032] like Figure 1-4 As shown, a limiting mechanism for a picking car gantry includes a fixed seat 100, a limiting shaft 200, a limiting baffle 300, a limiting retaining ring 400, and a locking handle 500.
[0033] In this embodiment, the limiting mechanism is used to provide a mechanical limit for the liftable picking cart gantry 600 to restrict the descent of the gantry 600, so as to facilitate the operator to enter under the gantry 600 to maintain the hydraulic mechanism.
[0034] Specifically, the fixed seat 100 is located on one side of the gantry 600 and is used to support and fix the limiting shaft 200 and the limiting baffle 300. The limiting shaft 200 is movably mounted on the fixed seat 100. The limiting shaft 200 is provided with a first limiting groove 210 and a second limiting groove 220 arranged at intervals. The limiting shaft 200 includes a first end for limiting the gantry 600. The limiting shaft 200 has two working positions: a first position, i.e., the first end is retracted into the fixed seat 100; and a second position, i.e., the first end is extended outside the fixed seat 100. When it is in the first position, the limiting shaft 200 can avoid interfering with the rising of the gantry 600. When it is in the second position, the first end of the limiting shaft 200 can be extended outside the fixed seat 100 and located... Below the gantry 600, a limiting baffle 300 is provided to support the gantry 600. It is movably mounted on the fixed base 100 and is configured to selectively engage with the first limiting groove 210 to hold the limiting shaft 200 in a first position, or engage with the second limiting groove 220 to hold the limiting shaft 200 in a second position. When the gantry 600 rises to a first preset height, the limiting shaft 200 can switch to the second position, and the first end of the limiting shaft 200 can abut against the bottom of the gantry 600 to limit the gantry 600 from descending. By limiting the gantry 600, it is not necessary to use other equipment or pads to support the gantry 600, thereby improving the convenience of operation and facilitating the maintenance of the hydraulic mechanism located at the rear of the gantry 600.
[0035] In this embodiment, the fixed base 100 is made of metal material, which has sufficient strength and rigidity to withstand the pressure generated when the gantry 600 descends. The limiting shaft 200 is made of high-strength alloy steel material, and the surface is hardened to improve its wear resistance and service life. The distance between the first limiting groove 210 and the second limiting groove 220 on the limiting shaft 200 is designed according to the actual size of the gantry 600 and the usage requirements. The limiting baffle 300 is made of elastic material, which has a certain elastic deformation capacity, making it easy to engage and disengage from the limiting groove.
[0036] In this embodiment, the first preset height is usually set to 10%-20% of the highest position of the gantry 600, ensuring that the operator has enough space to perform the limiting operation.
[0037] Furthermore, the gantry 600 includes an outer gantry 610, a middle gantry 620 that can be raised and lowered inside the outer gantry 610, and an inner gantry 630 that can be raised and lowered inside the middle gantry 620. A through area is provided between the two sides of the outer gantry 610, which forms an open space for easy observation and maintenance by the operator. The hydraulic mechanism is located directly behind the through area. This layout design allows the hydraulic mechanism to be exposed after the middle gantry 620 is raised to a certain height, facilitating maintenance and repair. The outer gantry 610, middle gantry 620, and inner gantry 630 are all made of aluminum alloy, which has the characteristics of being lightweight and high-strength.
[0038] Furthermore, the fixing seat 100 is fixed to one side of the outer gantry 610, and the fixing seat 100 has a mounting hole in the middle. The limiting shaft 200 is movably inserted into the mounting hole and can switch between the first position and the second position. The diameter of the mounting hole is slightly larger than the diameter of the limiting shaft 200, usually 0.5-1 mm larger, to ensure that the limiting shaft 200 can move smoothly. When the limiting shaft 200 is in the second position, the first end of the limiting shaft 200 is located directly below the middle gantry 620, forming a mechanical restriction on the descent of the middle gantry 620.
[0039] Furthermore, the limiting mechanism also includes a limiting retaining ring 400, which is engaged at the second end of the limiting shaft 200. The diameter of the limiting retaining ring 400 is larger than the diameter of the mounting hole. The limiting retaining ring 400 prevents the limiting shaft 200 from completely disengaging from the fixed seat 100, thus improving safety. The limiting retaining ring 400 is typically made of an elastic material for easy installation and removal.
[0040] Furthermore, the limiting baffle 300 is arranged vertically on the fixed base 100. The limiting baffle 300 includes a snap-fit end 310 that can be snapped into the first limiting groove 210 or the second limiting groove 220, and a mounting end 320 away from the snap-fit end 310. The mounting end 320 is movably connected to the fixed base 100 via a mounting shaft. The mounting end 320 is provided with an adjustment groove 321 arranged vertically. The mounting shaft movably passes through the adjustment groove 321, so that the limiting baffle 300 can move up and down within a certain range to achieve... In this embodiment, when the position of the limiting baffle 300 needs to be adjusted, the limiting baffle 300 can be driven to move upward so that it disengages from the first limiting groove 210 or the second limiting groove 220. After the position of the limiting shaft 200 is adjusted and is in place, the limiting baffle 300 can be driven to move downward so that the locking end 310 re-locks into the first limiting groove 210 or the second limiting groove 220, thereby achieving the positioning of the limiting shaft 200.
[0041] Furthermore, the snap-fit end 310 is hook-shaped and has a downward-opening positioning groove 311. When the snap-fit end 310 is engaged in the first limiting groove 210 or the second limiting groove 220, the limiting shaft 200 is engaged in the positioning groove 311. The width of the positioning groove 311 is slightly larger than the width of the upper limiting groove of the limiting shaft 200, typically by 0.2-0.5 mm, to ensure a secure engagement without being too tight.
[0042] Furthermore, the locking handle 500 is connected to the end of the mounting shaft away from the fixed seat 100 and is used to clamp or release the limit stop. The locking handle 500 includes a gripping part 510 and an abutting part 520. The abutting part 520 is threadedly engaged with the mounting shaft and can abut against the outer side of the limit stop 300. The gripping part 510 is ergonomically designed to facilitate gripping and rotation by the operator. When the locking handle 500 is driven to rotate, since the abutting part 520 of the locking handle 500 is threadedly engaged with the mounting shaft, its rotation can cause it to move along the axial direction of the mounting shaft, thereby achieving clamping or releasing of the limit stop 300.
[0043] In this embodiment, the picking cart also includes a lifting switch 700, which is fixed to the body of the picking cart and used to control the gantry 600 to rise or fall. During maintenance, operators do not need to stand on the operating platform of the gantry 600 to perform lifting operations, thus improving safety performance.
[0044] In actual use, when maintenance or other operations are required on the gantry 600, the operator can control the gantry 600 to rise to the first preset height via the lifting switch 700. At this time, the operator can loosen the locking handle 500, adjust the position of the limit baffle 300, so that the locking end 310 of the limit baffle 300 disengages from the first limit groove 210, and push the limit shaft 200 to the second position. Then, the locking end 310 of the limit baffle 300 is locked into the second limit groove 220, and the locking handle 500 is tightened to fix the limit baffle 300. At this time, the first end of the limit shaft 200 is located directly below the middle gantry 620, forming a mechanical limit. Even if the hydraulic system fails, the gantry 600 will not fall unexpectedly, ensuring the safety of the operator.
[0045] After maintenance or operation is completed, the operator can control the gantry 600 to rise slightly via the lifting switch 700, loosen the locking handle 500, adjust the position of the limit baffle 300 so that the locking end 310 of the limit baffle 300 disengages from the second limit groove 220, and pull the limit shaft 200 back to the first position. Then, the locking end 310 of the limit baffle 300 is locked into the first limit groove 210, and the locking handle 500 is tightened to fix the limit baffle 300. At this time, the first end of the limit shaft 200 retracts into the fixed seat 100, and the gantry 600 can descend normally.
[0046] In this embodiment, a limiting mechanism for a picking vehicle mast is disclosed, including a fixed base 100, a limiting shaft 200, and a limiting baffle 300. The fixed base 100 is located on one side of the mast 600. The limiting shaft 200 is movably mounted on the fixed base 100 and has a first limiting groove 210 and a second limiting groove 220 arranged at intervals. The limiting shaft 200 can switch between a first position where its first end is retracted within the fixed base 100 and a second position where its first end is extended outside the fixed base. The limiting baffle 300 is movable. The limiting shaft 200 is set on the fixed base 100 and can be selectively engaged in the first limiting groove 210 or the second limiting groove 220 to keep the limiting shaft 200 in the corresponding position. When the gantry 600 rises to the first preset height, the limiting shaft 200 can be switched to the second position, with its first end abutting against the bottom of the gantry 600 to restrict the gantry 600 from descending. Through mechanical limiting, it provides safety protection for the liftable gantry 600. The structure is simple, the operation is convenient, and it can effectively prevent the gantry 600 from descending unexpectedly and causing safety accidents.
[0047] The technical solution of this utility model has been described in detail, and the described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0049] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0051] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A limiting mechanism for a picking vehicle gantry, used to provide a mechanical limit for a liftable gantry to restrict its descent, characterized in that, The limiting mechanism includes: A fixed base, located on one side of the gantry; A limiting shaft is movably mounted on the fixed base. The limiting shaft is provided with a first limiting groove arranged at intervals for a second limiting groove, and the limiting shaft includes a first end for limiting the gantry. The limiting shaft has a first position in which the first end is retracted into the fixed base and a second position in which the first end is extended outside the fixed base. A limiting baffle, which is movably mounted on the fixed base, is configured as follows: The shaft can be selectively engaged in the first limiting groove to hold the limiting shaft in the first position or engaged in the second limiting groove to hold the limiting shaft in the second position. When the gantry rises to a first preset height, the limiting shaft can be switched to a second position, and the first end of the limiting shaft can abut against the bottom of the gantry to restrict the gantry from descending.
2. The limiting mechanism for a picking vehicle gantry according to claim 1, characterized in that, The gantry includes an outer gantry, a middle gantry that can be lifted and lowered inside the outer gantry, and an inner gantry that can be lifted and lowered inside the middle gantry. A through area is provided between the two sides of the outer gantry.
3. The limiting mechanism for a picking vehicle gantry according to claim 2, characterized in that, The fixing seat is fixed on one side of the outer gantry, and the fixing seat has a mounting hole in the middle. The limiting shaft is movably inserted into the mounting hole and can be switched between a first position and a second position. When the limiting shaft is in the second position, the first end of the limiting shaft is located directly below the middle gantry.
4. The limiting mechanism for a picking vehicle gantry according to claim 3, characterized in that, It also includes a limiting retaining ring, which is engaged at the second end of the limiting shaft, and the diameter of the limiting retaining ring is larger than the diameter of the mounting hole.
5. The limiting mechanism for a picking vehicle gantry according to claim 3, characterized in that, The limiting baffle is arranged vertically on the fixed base. The limiting baffle includes a snap-fit end that can be snapped into a first limiting groove or a second limiting groove and an installation end away from the snap-fit end. The installation end is movably connected to the fixed base through an installation shaft.
6. The limiting mechanism for a picking vehicle gantry according to claim 5, characterized in that, The mounting end is provided with an adjustment groove arranged in the vertical direction, and the mounting shaft is movably inserted into the adjustment groove.
7. The limiting mechanism for a picking vehicle gantry according to claim 6, characterized in that, The snap-fit end is hook-shaped and has a downward-facing positioning groove. When the snap-fit end is snapped into the first limiting groove or the second limiting groove, the limiting shaft is snapped into the positioning groove.
8. The limiting mechanism for a picking vehicle gantry according to claim 5, characterized in that, It also includes a locking handle, which is connected to the end of the mounting shaft away from the fixed seat and is used to clamp or release the limiting baffle.
9. The limiting mechanism for a picking vehicle gantry according to claim 8, characterized in that, The locking handle includes a gripping part and an abutting part. The abutting part is threadedly engaged with the mounting shaft and can abut against the outer side of the limiting baffle.
10. The limiting mechanism for a picking vehicle gantry according to claim 1, characterized in that, The picking cart also includes a lifting switch, which is fixed to the body of the picking cart and used to control the gantry to rise or fall.