A device for handling a keg of water

CN224766775UActive Publication Date: 2026-09-18XUANHAN COUNTY QINQUAN BEVERAGE CO LTD
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Patent Information

Application Number
CN202522498714.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-25
Publication Date
2026-09-18
Estimated Expiration
2035-11-25

AI Technical Summary

Technical Problem

若将第二圆孔内轮廓设计为与桶装水颈部外轮廓适配,翻转板转动套合过程中,极易与桶装水颈部发生机械干涉,导致操作卡顿甚至无法顺利完成套合动作;若为规避上述干涉问题,将第二圆孔内径设计为远大于桶装水颈部外径,会使二者间形成较大装配间隙,无法对桶装水颈部形成有效约束,难以抵御搬运过程中的颠簸冲击

Benefits of technology

[0014] 1. The adjustable constraint port structure of the constraint component in this utility model can adjust the size of the constraint port by moving the movable adjustment plate relative to the fixed constraint plate; it can adapt to the neck contour of bottled water of different diameter specifications, avoid the problems of assembly interference or constraint loosening caused by traditional fixed size constraint structures, and significantly ensure the positioning stability and smooth operation during the handling of bottled water.

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Abstract

The utility model discloses a kind of barreled water handling devices, the utility model relates to barreled water technical field, scheme includes: a kind of barreled water handling device, comprising: handling frame;Two support columns, two support columns are oppositely installed in the both sides of handling frame;Crossbeam, crossbeam is installed between two support columns;Multiple connecting components, multiple connecting components are respectively rotationally installed on crossbeam, connecting component can be locked to preset rotation angle relative to crossbeam;Multiple constraint components, multiple constraint components are connected one by one with multiple connecting components, constraint component includes fixed constraint plate and movable adjusting plate;Fixed constraint plate, the edge of fixed constraint plate is provided with fixed socket;Movable adjusting plate, the edge of movable adjusting plate is provided with movable socket, movable socket and fixed socket can be enclosed to form constraint port;It can form effective constraint to barreled water under the premise of avoiding mechanical interference of barreled water.
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Description

Technical Field

[0001] This utility model relates to the field of bottled water technology, and specifically to a bottled water handling device. Background Technology

[0002] Bottled water primarily serves high-density population areas such as offices, commercial spaces, and restaurants. Restaurants need to move bottled water from their back-of-house storage area to the water dispensers in the front-of-house customer drinking areas and employee rest areas to ensure daily drinking water needs. Office areas need to periodically deliver bottled water from a dedicated storage room to the distributed water dispensers in each department, while simultaneously collecting empty bottles to maintain a stable water supply in the office environment. Supermarkets need to move bottled water from their storage area and replenish stock regularly based on sales patterns and employee needs.

[0003] According to the authorization announcement number (CN221541672U), a bottled water cart has a handle at the front of the frame and a support plate at the bottom of the frame for placing bottled water. The frame is also equipped with a flip plate that locks the neck of the bottled water. In actual operation, the operator first moves the bottled water onto the support plate, and then operates the flip plate to flip it over, causing the second circular hole on the flip plate to engage with the neck of the bottled water. This effectively prevents the bottled water from tipping over due to road bumps during transport.

[0004] The structure disclosed in this patent has defects in practical applications, specifically as follows: In the bottled water fixing operation, the second circular hole on the flip plate needs to be fitted onto the neck of the bottled water to achieve fixation. If the inner contour of the second circular hole is designed to match the outer contour of the bottled water neck, mechanical interference is very likely to occur between the flip plate and the bottled water neck during the rotation and fitting process, leading to operation jamming or even failure to complete the fitting action smoothly. If, in order to avoid the above interference problem, the inner diameter of the second circular hole is designed to be much larger than the outer diameter of the bottled water neck, a large assembly gap will be formed between the two, which cannot effectively constrain the bottled water neck and is difficult to resist the bumps and impacts during transportation. Utility Model Content

[0005] The purpose of this utility model is to provide a bottled water handling device that addresses the problem in the prior art where mechanical interference is caused by designing an adaptive contour to ensure the constraint effect when implementing the bottled water constraint function, and the loss of effective constraint due to increased assembly gaps in order to avoid mechanical interference. The device provides a solution that can effectively constrain the bottled water while avoiding mechanical interference.

[0006] This utility model is achieved through the following technical solution:

[0007] A bottled water handling device includes: a handling frame; two supporting columns, which are installed opposite to each other on both sides of the handling frame; a crossbeam, which is installed between the two supporting columns; multiple connecting components, which are rotatably installed on the crossbeam and can be locked relative to the crossbeam to a preset rotation angle; and multiple constraint components, which are connected one-to-one with the multiple connecting components. Each constraint component includes a fixed constraint plate and a movable adjustment plate. The fixed constraint plate has a fixed latch on its edge. The movable adjustment plate has a movable latch on its edge, which, together with the fixed latch, can form a constraint opening. The movable adjustment plate can move a preset distance relative to the fixed constraint plate to adjust the size of the constraint opening.

[0008] Furthermore, in this utility model, the aforementioned movable adjustment plate has guide sliding holes on both sides of the movable bayonet; the fixed constraint plate has guide shafts installed on both sides of the fixed bayonet, the two guide shafts pass through the corresponding guide sliding holes, and a clamping sleeve is fitted on one of the guide shafts; the clamping sleeve can be locked to the preset position of the guide shaft, thereby forming abutment against the movable adjustment plate.

[0009] Furthermore, in this utility model, the above-mentioned connecting component includes: a rotating sleeve, which is rotatably fitted onto the outside of the crossbeam and can be locked relative to the crossbeam to a preset rotation angle; and a connecting shaft, one end of which is connected to the rotating sleeve and the other end of which is connected to a constraint component.

[0010] Furthermore, in this utility model, one side of the aforementioned crossbeam is provided with a plurality of first locking holes along the extension direction, and the other side of the crossbeam is provided with a plurality of second locking holes along the extension direction; an assembly groove is provided on the rotating sleeve, and a locking rod is movably inserted in the assembly groove, with a return spring fitted on the outer side of the locking rod; one end of the return spring is connected to the outer wall of the locking rod, and the other end of the return spring is connected to the inner wall of the assembly groove; wherein, the locking rods on the plurality of rotating sleeves are sequentially and alternately embedded in the first locking holes and the second locking holes, thereby realizing the locking engagement between the rotating sleeve and the crossbeam, and thus causing the plurality of constraint components to be distributed on both sides of the transport vehicle frame respectively.

[0011] Furthermore, in this utility model, the bottom end of the aforementioned crossbeam is provided with a plurality of unused lock holes in sequence along the extension direction; wherein, when the locking rod on the rotating sleeve is inserted into the unused lock hole, the corresponding constraint component is disengaged from the constraint area of ​​the transport vehicle frame.

[0012] Furthermore, in this utility model, the aforementioned support columns are provided with multiple connecting slots in sequence along the extension direction, and the multiple connecting slots of the two support columns are arranged in a one-to-one correspondence; the two ends of the crossbeam are respectively detachably connected to two connecting slots at the same height on the two support columns.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. The adjustable constraint port structure of the constraint component in this utility model can adjust the size of the constraint port by moving the movable adjustment plate relative to the fixed constraint plate; it can adapt to the neck contour of bottled water of different diameter specifications, avoid the problems of assembly interference or constraint loosening caused by traditional fixed size constraint structures, and significantly ensure the positioning stability and smooth operation during the handling of bottled water.

[0015] 2. This utility model achieves dual adjustment of the spacing and height of the constraint components by axial sliding cooperation between the rotating sleeve and the connecting shaft, combined with the multi-height detachable connection between the crossbeam and the supporting column; it is suitable for bottled water of different volumes and heights, avoids the limitation of the narrow range of traditional devices, and significantly improves the compatibility and adaptability of the bottled water handling device for bottled water of multiple scenarios and specifications. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a first-person perspective schematic diagram of a bottled water handling device;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram from a second perspective of a bottled water handling device;

[0020] Figure 4 This is a bottom view of the beam;

[0021] Figure 5 This is a cross-sectional view of the rotating sleeve.

[0022] The attached diagram shows the markings and corresponding component names:

[0023] 1-Transporter frame, 2-Support column, 3-Crossbeam, 4-Connecting bayonet, 5-End cap, 6-Rotating sleeve, 7-Connecting shaft, 8-Fixed constraint plate, 9-Modible adjusting plate, 10-Constraint port, 11-First locking hole, 12-Fixed bayonet, 13-Modible bayonet, 14-Guide sliding hole, 15-Guide shaft, 16-Firming sleeve, 17-Second locking hole, 18-Unused locking hole, 19-Assembly groove, 20-Reset spring, 21-Locking rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0025] Example

[0026] Please refer to Figures 1 to 5 This utility model provides a bottled water handling device. It includes a handling frame 1, two supporting columns 2, a crossbeam 3, multiple connecting components, and multiple constraint components. The two supporting columns 2 are installed opposite each other on both sides of the handling frame 1, and the crossbeam 3 is positioned between the two supporting columns 2, dividing the handling frame 1 into two independent constraint areas, both of which have bottled water constraint functions. Multiple connecting components are rotatably mounted on the crossbeam 3 and can be locked at a preset rotation angle relative to the crossbeam 3. Each constraint component is connected to a corresponding connecting component. Each constraint component consists of a fixed constraint plate 8 and a movable adjustment plate 9. The fixed constraint plate 8 has a fixed latch 12 on its edge, and the movable adjustment plate 9 has a movable latch 13 on its edge. The fixed latch 12 and the movable latch 13 can be closed to form a constraint opening 10. The movable adjustment plate 9 can move a preset distance relative to the fixed constraint plate 8 to adjust the size of the constraint opening 10. Multiple casters are installed at the bottom of the handling frame 1 for overall device transfer.

[0027] When transferring bottled water, multiple bottled water containers are placed in the constraint areas on the left and right sides of the transport vehicle frame 1. By driving the connecting components to rotate, the corresponding constraint components are driven to rotate synchronously, so that the constraint components are locked above the bottled water to form a limit constraint. The constraint components are alternately distributed in the left and right constraint areas to optimize space utilization.

[0028] Before the constraint assembly constrains the bottled water, the operator drives the movable adjustment plate 9 to move away from the fixed constraint plate 8 to increase the size of the constraint opening 10. Then, the connecting assembly is rotated so that the constraint opening 10 can be smoothly fitted onto the neck of the bottled water to avoid motion interference. After the fitting is completed, the movable adjustment plate 9 is driven to move closer to the fixed constraint plate 8 to reduce the size of the constraint opening 10 so that the inner contour of the constraint opening 10 matches the outer contour of the neck of the bottled water, thereby preventing the bottled water from shaking during the transfer process.

[0029] It should be noted that the displacement of the driving movable adjustment plate 9 relative to the fixed constraint plate 8 can realize the size adjustment of the constraint port 10. Firstly, it can prevent the constraint port 10 from interfering with the bottled water during the rotation of the constraint component around the connecting component, ensuring smooth assembly operation. Secondly, it can make the inner contour of the constraint port 10 adapt to the outer contour of the neck of bottled water of different specifications, thereby expanding the device's adaptability to bottled water of different sizes and improving overall versatility.

[0030] Please refer to Figure 2 In some embodiments of this application, the movable adjusting plate 9 has guide sliding holes 14 on both sides of the movable bayonet 13, and the fixed constraint plate 8 has guide shafts 15 installed on both sides of the fixed bayonet 12. The two guide shafts 15 are respectively slidably engaged with the corresponding guide sliding holes 14. A clamping sleeve 16 is fitted on one of the guide shafts 15. The clamping sleeve 16 can move along the axis of the guide shaft 15 and be locked in a preset position. After locking, it can form an axial abutment against the movable adjusting plate 9. The movable adjusting plate 9 achieves directional movement relative to the fixed constraint plate 8 through the sliding engagement of the guide sliding holes 14 and the guide shafts 15. The clamping sleeve 16 restricts the movable adjusting plate 9 from displacing away from the fixed constraint plate 8 through the abutment action.

[0031] When it is necessary to enlarge the constraint opening 10 to fit the bottled water, the operator first drives the clamping sleeve 16 to move a preset distance away from the movable adjusting plate 9 along the guide shaft 15, releasing the limitation on the movable adjusting plate 9. At this time, the movable adjusting plate 9 can move away from the fixed constraint plate 8 along the guide shaft 15, thereby increasing the size of the constraint opening 10. After the constraint opening 10 is fitted into the neck of the bottled water, the operator drives the clamping sleeve 16 to move closer to the movable adjusting plate 9 along the guide shaft 15 until the clamping sleeve 16 and the movable adjusting plate 9 form a tight contact, and pushes the movable adjusting plate 9 closer to the fixed constraint plate 8, so that the size of the constraint opening 10 is reduced to fit tightly with the outer contour of the bottled water neck, effectively preventing the bottled water from shaking during transportation.

[0032] It should be noted that the clamping sleeve 16 and the guide shaft 15 can adopt an intermittent threaded fit structure; the guide shaft 15 is machined with threads in a preset length section, and the inner hole of the clamping sleeve 16 is correspondingly set with threaded sections. The clamping sleeve 16 does not need to rotate along the full length of the guide shaft 15. It is only necessary to make the inner and outer threaded sections mesh to quickly complete the locking and unlocking of the clamping sleeve 16, which significantly simplifies the operation steps in the adjustment process of the constraint port 10, thereby improving the overall efficiency of the device adjustment operation.

[0033] Please refer to Figures 1 to 3 In some embodiments of this application, the connecting assembly consists of a rotating sleeve 6 and a connecting shaft 7; the rotating sleeve 6 is fitted onto the outside of the crossbeam 3 through a rotatable fit, and the rotating sleeve 6 has the function of locking relative to the crossbeam 3 at a preset rotation angle; one end of the connecting shaft 7 is fixedly connected to the rotating sleeve 6, and the other end is connected to the constraint assembly (which can be connected to the outer wall of the fixed constraint plate 8), and the rotating sleeve 6 can drive the constraint assembly to rotate synchronously around the axis of the crossbeam 3 through the connecting shaft 7.

[0034] Before loading bottled water onto the transport vehicle frame 1, the operator must first drive the rotating sleeve 6 to rotate relative to the crossbeam 3. This rotation, via the connecting shaft 7, causes the constraint component to rotate out of the constraint area. At this point, the constraint component is in a vertical position, providing operating space for loading the bottled water. After the bottled water is placed in the designated position on the transport vehicle frame 1, the operator drives the rotating sleeve 6 to rotate in the opposite direction. This rotation, via the connecting shaft 7, causes the constraint component to rotate to the constraint area and switch to a horizontal position. The operator then locks the rotating sleeve 6 at the current rotation angle, aligning the constraint component and creating a limiting constraint on the bottled water.

[0035] Please refer to Figure 1 , Figure 3 and Figure 5 The crossbeam 3 has multiple first locking holes 11 spaced apart along its extension direction on one side, and multiple second locking holes 17 spaced apart on the other side. The rotating sleeve 6 has an assembly groove 19 on its side wall, through which a locking rod 21 slides. A return spring 20 is fitted around the outer circumference of the locking rod 21, with one end connected to the outer wall of the locking rod 21 and the other end connected to the inner wall of the assembly groove 19, forming an elastic return structure. The locking rods 21 on the multiple rotating sleeves 6 can be sequentially and alternately inserted into the first locking holes 11 and the second locking holes 17, achieving a locking engagement between the rotating sleeves 6 and the crossbeam 3, thereby distributing multiple constraint components on both sides of the transport vehicle frame 1.

[0036] When the rotating sleeve 6 rotates clockwise, it drives the constraint assembly to rotate synchronously to the constraint area on the right side of the transport vehicle frame 1 through the connecting shaft 7. At this time, the locking rod 21 automatically inserts into the corresponding first locking hole 11 under the elastic restoring force of the return spring 20, completing the positioning and locking of the rotating sleeve 6. When the rotating sleeve 6 rotates counterclockwise, it drives the constraint assembly to rotate synchronously to the constraint area on the left side of the transport vehicle frame 1. The locking rod 21 is inserted into the corresponding second locking hole 17 to achieve locking. Thus, multiple constraint components are staggered and distributed in the left and right constraint areas, respectively forming a limiting constraint on the bottled water in the constraint areas on both sides.

[0037] When it is necessary to release the constraint and remove the constraint assembly from the constraint area, the operator pulls the locking rod 21 away from the crossbeam 3. The return spring 20 is compressed and produces elastic deformation. The locking rod 21 completely disengages from the currently engaged first locking hole 11 or second locking hole 17. After the rotating sleeve 6 is released from the lock of the crossbeam 3, the rotating sleeve 6 can be driven to rotate around the axis of the crossbeam 3, thereby driving the constraint assembly out of the constraint area.

[0038] It should be noted that the rotating sleeve 6 and the connecting shaft 7 adopt an axial sliding fit structure, allowing the rotating sleeve 6 to reciprocate and adjust along the axial direction of the connecting shaft 7. Changing the axial positioning position of the rotating sleeve 6 on the connecting shaft 7 can adjust the axial distance between two adjacent rotating sleeves 6. The distance adjustment can simultaneously change the distance between the constraint components that are connected one-to-one with the rotating sleeve 6, making the distance between the constraint components adaptable to the radial profile dimensions of bottled water of different volumes, thereby expanding the compatibility range of the device with bottled water of different volume specifications and improving the overall applicability.

[0039] Please refer to Figure 4 In some embodiments of this application, the bottom end of the beam is provided with a plurality of idle locking holes 18 along its own extension direction; when the locking rod 21 on the rotating sleeve 6 is engaged with the idle locking holes 18, the constraint component connected to the rotating sleeve 6 is simultaneously disengaged from the constraint area of ​​the transport vehicle frame 1, thereby achieving positioning in a non-working state.

[0040] When the device is idle, multiple rotating sleeves 6 can be driven to rotate around the axis of the crossbeam 3, which will drive the corresponding constraint components to rotate synchronously to get out of the constraint area, so that each constraint component maintains a vertical posture, avoids obstruction or spatial interference to the constraint area, and ensures that the subsequent bottled water loading operation is unobstructed.

[0041] Meanwhile, based on the characteristic that the rotating sleeve 6 can adjust the spacing along the connecting shaft 7, when a large-sized bottled water needs to be placed in the constrained area and it is not necessary to activate all the constrained components, the corresponding idle rotating sleeve 6 can be driven to rotate, so that the associated constrained components are removed from the constrained area. At this time, the locking rod 21 on the rotating sleeve 6 is embedded in the corresponding idle locking hole 18, so that the constrained components are kept in the non-working position, avoiding interference with the placement of large-sized bottled water.

[0042] It should be noted that the positions of the first lock hole 11, the second lock hole 17, and the unused lock hole 18 on the crossbeam 3 are clearly distinguishable. The first lock hole 11 is opened on the right side wall of the crossbeam 3 along the extension direction of the crossbeam 3, the second lock hole 17 is opened on the left side wall of the crossbeam 3, and the unused lock hole 18 is located in the area between the first lock hole 11 and the second lock hole 17, specifically on the bottom wall of the crossbeam 3.

[0043] Please refer to Figure 1 and Figure 3 In some embodiments of this application, the support column 2 has multiple connecting slots 4 extending along its own axis, and the connecting slots 4 on the two support columns 2 are symmetrically distributed in a one-to-one correspondence; the two ends of the crossbeam 3 are respectively connected to the connecting slots 4 on the two support columns 2 at the same horizontal height by a detachable connection structure, so as to realize the assembly and fixation of the crossbeam 3 and the support column 2.

[0044] When the height of the crossbeam 3 needs to be adjusted, the connection between the two ends of the crossbeam 3 and the current connection slot 4 can be released, and it can be reassembled to the corresponding connection slots 4 at different heights on the two support columns 2. After the height of the crossbeam 3 is adjusted, the constraint component connected to the crossbeam 3 through the connection component will change its height synchronously with the crossbeam 3, so that the height of the constraint component can be adapted to the vertical height requirements of bottled water of different sizes, further expanding the adaptability range of the device.

[0045] For example, both ends of the crossbeam 3 are detachably connected with end caps 5 via threaded engagement. After both ends of the crossbeam 3 are respectively inserted into the corresponding connecting slots 4 on the two supporting columns 2, the end caps 5 are screwed onto both ends of the crossbeam 3 and tightened, so that the end face of the end cap 5 forms a tight abutment with the outer wall of the supporting column 2, thereby realizing the axial positioning and fixation of the crossbeam 3 at the connecting slots 4, and completing the assembly connection between the crossbeam 3 and the supporting column 2.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A bottled water handling device, characterized in that, include: Transport vehicle frame (1); Two support columns (2) are installed opposite each other on both sides of the transport vehicle frame (1); A crossbeam (3) is installed between the two supporting columns (2); Multiple connecting components are rotatably mounted on the crossbeam (3), and the connecting components can be locked relative to the crossbeam (3) to a preset rotation angle; Multiple constraint components are connected one-to-one with multiple connection components. Each constraint component includes a fixed constraint plate (8) and a movable adjustment plate (9). A fixed constraint plate (8) is provided with a fixing slot (12) on its edge; The movable adjustment plate (9) has a movable latch (13) on its edge, and the movable latch (13) and the fixed latch (12) can be closed to form a constraint opening (10). The movable adjustment plate (9) can move a preset distance relative to the fixed constraint plate (8) to adjust the size of the constraint opening (10).

2. The bottled water handling device according to claim 1, characterized in that, The movable adjustment plate (9) has guide sliding holes (14) on both sides of the movable bayonet (13); The fixed constraint plate (8) has guide shafts (15) installed on both sides of the fixed bayonet (12). The two guide shafts (15) pass through the corresponding guide sliding holes (14), and a clamping sleeve (16) is fitted on one of the guide shafts (15). The clamping sleeve (16) can be locked to a preset position of the guide shaft (15), thereby forming abutment against the movable adjusting plate (9).

3. The bottled water handling device according to claim 1, characterized in that, The connection component includes: Rotate the sleeve (6), which is rotatably fitted onto the outside of the crossbeam (3), and the rotating sleeve (6) can be locked relative to the crossbeam (3) to a preset rotation angle; A connecting shaft (7) is provided, one end of which is connected to the rotating sleeve (6), and the other end of which is connected to the constraint assembly.

4. The bottled water handling device according to claim 3, characterized in that, The crossbeam (3) has a plurality of first locking holes (11) on one side along the extension direction, and a plurality of second locking holes (17) on the other side along the extension direction; The rotating sleeve (6) is provided with an assembly groove (19), and a locking rod (21) is movably inserted in the assembly groove (19). A return spring (20) is fitted on the outside of the locking rod (21). One end of the return spring (20) is connected to the outer wall of the locking rod (21), and the other end of the return spring (20) is connected to the inner wall of the assembly channel (19); Among them, the locking rods (21) on the multiple rotating sleeves (6) are sequentially and alternately embedded in the first locking hole (11) and the second locking hole (17), thereby realizing the locking engagement between the rotating sleeves (6) and the crossbeam (3), and thus the multiple constraint components are respectively distributed on both sides of the transport vehicle frame (1).

5. The bottled water handling device according to claim 4, characterized in that, The bottom end of the crossbeam (3) is provided with a plurality of unused lock holes (18) in sequence along the extension direction; When the locking rod (21) on the rotating sleeve (6) is inserted into the idle locking hole (18), the corresponding constraint component is released from the constraint area of ​​the transport vehicle frame (1).

6. The bottled water handling device according to any one of claims 1 to 5, characterized in that, The supporting column (2) is provided with a plurality of connecting slots (4) in sequence along the extension direction, and the plurality of connecting slots (4) of the two supporting columns (2) are arranged in a one-to-one correspondence; The two ends of the crossbeam (3) are detachably connected to the two connecting slots (4) at the same height on the two supporting columns (2).

Citation Information

Patent Citations

  • Barreled water trolley

    CN221541672U