A cart with adjustable deck height

Abstract

The utility model relates to transport trolley technical field, and disclose a kind of adjustable layer height's trolley, including car body, lifting display component and adjusting component, the top of car body is equipped with frame, the outside of frame is equipped with several moving frame by adjusting component, both ends of moving frame are fixedly connected with limit board, the utility model is driven arc-shaped ejection block and the arc-shaped groove cooperation of layer bottom by screw rod, realize the quick adjustment of layerboard inclination angle, different side of article can be flexibly displayed, significantly improve display effect;Through the quick positioning design of the U type of adjusting component's insert rod and slot, cooperate the guiding effect of conical gap, the adjustment of moving frame position can be completed by single hand operation, realize the flexible matching of layer height interval, the automatic reset function of tension spring makes dismounting process not need auxiliary tool, it is simple to operate and can be quickly fixed, while guaranteeing stability, overall structure greatly improves the adjustment efficiency and space utilization.

Description

Technical Field

[0001] This utility model relates to the field of transport trolley technology, specifically a trolley with adjustable shelf height. Background Technology

[0002] Currently, trolleys are widely used in logistics, transportation and other fields. Existing trolleys include a base, handlebars and wheels. The base is provided with wheel holes and handle holes. The wheel holes are used to fix the wheels and the handle holes are used to fix the handlebars.

[0003] Currently, most commonly used transport trolleys have a fixed shelf height design, which cannot flexibly adjust the shelf spacing according to the height of different items. When moving or displaying large items, the upper space is easily wasted, while when loading small items, the fixed shelf height leads to low loading efficiency. The shelves of traditional trolleys are mostly horizontally fixed structures, which cannot tilt to display items, affecting the display effect. The positioning of mobile racks is mostly based on bolt fastening, which requires tightening and loosening bolts one by one during adjustment, making the operation cumbersome and difficult to align quickly. Therefore, a trolley with adjustable shelf height is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable shelf height trolley to solve the problems mentioned in the background art. Currently, most commonly used transport trolleys have a fixed shelf height design, which cannot flexibly adjust the shelf spacing according to the height of different items. When transporting or displaying large items, the upper space is easily wasted, while when loading small items, the fixed shelf height leads to low loading efficiency. The shelves of traditional trolleys are mostly horizontally fixed structures, which cannot tilt to display items, affecting the display effect. The positioning of mobile racks mostly uses bolt fastening, which requires tightening and loosening the bolts one by one during adjustment, making the operation cumbersome and difficult to align quickly.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable shelf trolley, comprising a vehicle body, a lifting display assembly, and an adjustment assembly. The top of the vehicle body is provided with a frame, and a plurality of movable frames are installed on the outer side of the frame via the adjustment assembly. Limit plates are fixedly connected to both ends of the movable frames, and shelves are connected to the top of the movable frames via the lifting display assembly.

[0006] The lifting display assembly includes a screw, with an arc-shaped ejector block fixedly connected to the top of the screw. The upper surface of the movable frame is provided with a threaded hole adapted to the screw. One side of the shelf is rotatably connected to one side of the movable frame via a pivot. The bottom of the shelf is provided with an arc-shaped groove in the area opposite to the arc-shaped ejector block.

[0007] The adjustment assembly includes two U-shaped inserts, a connecting plate connecting the two U-shaped inserts, a number of tension springs connecting the connecting plate and the limiting plate, and a number of slots evenly provided on the outer side of the movable frame.

[0008] Preferably, the bottom of the aforementioned shelf is hinged with two guide rods, and the upper surface of the movable frame has two guide grooves that are adapted to the guide rods.

[0009] Preferably, the bottom end of the guide rod is movably connected to the guide groove and fixedly connected to the limit block, and the two guide rods are located on both sides of the screw.

[0010] Preferably, a handwheel is fixedly connected to the bottom of the screw, and a locking nut is sleeved on the upper part of the screw.

[0011] Preferably, the connecting plate described above is fixedly connected to a plurality of protective covers on the side near the limiting plate, and the protective covers are sleeved on the outside of the tension spring.

[0012] Preferably, the outer side of the limiting plate is provided with a through hole, and one end of the U-shaped plug rod is movably inserted through the through hole into the slot.

[0013] Preferably, the slot described above has a tapered notch at its inlet, and the angle of the tapered notch is 35 degrees to 40 degrees.

[0014] Preferably, the bottom of the vehicle body is provided with rollers, and a handle is fixedly connected to one side of the vehicle body.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0016] This invention utilizes a screw-driven arc-shaped ejector block that engages with an arc-shaped groove at the bottom of the shelf to achieve rapid adjustment of the shelf's tilt angle, allowing for flexible display of different sides of items and significantly enhancing the display effect. The U-shaped insert and slot design of the adjustment component enables quick positioning, and the conical notch provides guidance, allowing for one-handed adjustment of the movable shelf position and flexible matching of shelf heights. The automatic spring reset function eliminates the need for auxiliary tools during assembly and disassembly, simplifying operation and enabling rapid fixation. The overall structure ensures stability while significantly improving adjustment efficiency and space utilization. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the vehicle body structure of this utility model;

[0019] Figure 2 for Figure 1A magnified structural diagram of area A;

[0020] Figure 3 This is a schematic diagram of the vehicle frame structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the mobile frame structure in the exploded state of this utility model;

[0022] Figure 5 This is a schematic diagram of the mobile frame structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Vehicle body; 2. Frame; 3. Moving frame; 4. Shelf; 5. Limiting plate; 6. Lifting display assembly; 61. Screw; 62. Handwheel; 63. Threaded hole; 64. Arc-shaped ejector block; 65. Arc-shaped groove; 66. Guide rod; 67. Guide groove; 68. Locking nut; 69. Limiting block; 7. Adjustment assembly; 71. U-shaped insert rod; 72. Connecting plate; 73. Protective cover; 74. Tension spring; 75. Through hole; 76. Slot; 77. Conical notch. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0026] Example 1

[0027] In the current technology, most commonly used transport trolleys are designed with fixed shelf heights, which cannot flexibly adjust the shelf spacing according to the height of different items. When moving or displaying large items, the upper space is easily wasted, while when loading small items, the fixed shelf height leads to low loading efficiency. The shelves of traditional trolleys are mostly horizontally fixed structures, which cannot tilt to display items, affecting the display effect. The positioning of mobile racks is mostly based on bolt fastening, which requires tightening and loosening the bolts one by one during adjustment, making the operation cumbersome and difficult to align quickly.

[0028] Please see Figure 1-5This utility model provides a technical solution: an adjustable shelf trolley, including a body 1, a lifting display component 6 and an adjustment component 7. The top of the body 1 is provided with a frame 2. Several movable frames 3 are installed on the outside of the frame 2 through the adjustment component 7. Limit plates 5 are fixedly connected to both ends of the movable frames 3. Shelves 4 are connected to the top of the movable frames 3 through the lifting display component 6. The bottom of the body 1 is provided with rollers. A handle is fixedly connected to one side of the body 1. Holding the handle will move the body 1 through the rollers.

[0029] The lifting display assembly 6 includes a screw 61, with an arc-shaped ejector block 64 fixedly connected to the top of the screw 61. The upper surface of the movable frame 3 has a threaded hole 63 that matches the screw 61. A handwheel 62 is fixedly connected to the bottom of the screw 61. The screw 61 is rotated by the handwheel 62. A locking nut 68 is fitted onto the upper part of the screw 61. After the screw 61 is rotated to a suitable height, the locking nut 68 is tightened so that the bottom of the locking nut 68 fits against the top of the movable frame 3, fixing the position of the screw 61 and preventing the screw 61 from loosening. The shelf 4 is rotatably connected to one side of the movable frame 3 via a pivot. The bottom of the shelf 4 has an arc groove 65 in the area opposite to the arc-shaped ejector block 64. Two guide rods 66 are hinged to the bottom of the shelf 4. Two guide grooves 67 adapted to the guide rods 66 are opened on the upper surface of the movable frame 3. When the screw 61 drives the shelf 4 to rotate, the two hinged guide rods 66 move in the guide grooves 67, making the movement of the shelf 4 more stable. The bottom end of the guide rod 66 moves through the guide groove 67 and is fixedly connected to a limiting block 69. The two guide rods 66 are located on both sides of the screw 61. The limiting block 69 limits the guide rods 66. The diameter of the limiting block 69 is larger than the width of the guide groove 67 to prevent the guide rods from coming out.

[0030] The working principle or structural principle is as follows: When it is necessary to display items on the trolley, rotating the handwheel 62 drives the screw 61 to rotate. Rotating the handwheel 62 clockwise raises the screw 61, and rotating it counterclockwise lowers it. The screw 61 rises and falls through the threaded hole 63, driving the arc-shaped ejector block 64 to push the arc-shaped groove 65 at the bottom of the shelf 4, causing the shelf 4 to unfold around the axis of rotation. At the same time, the guide rod 66 slides along the guide groove 67 to ensure the smooth movement of the shelf 4. The limiting block 69 prevents it from falling out. After adjustment, tighten the locking nut 68 to fix the screw 61. The screw 61 and the arc-shaped ejector block 64 of the lifting display component 6 are linked to achieve synchronous and precise adjustment of the height and angle of the shelf 4. Combined with the guide rod 66, stability is enhanced. The limiting plate 5 is used to limit the lateral displacement of items on the shelf 4. A telescopic dust cover is installed on the outside of the screw 61, with both ends sealed and fixed, and a lubrication interface is reserved for regular replenishment of grease.

[0031] Example 2

[0032] The adjustment assembly 7 includes two U-shaped inserts 71, with a connecting plate 72 connecting the two U-shaped inserts 71. Several tension springs 74 are connected between the connecting plate 72 and the limiting plate 5. Several protective covers 73 are fixedly connected to the side of the connecting plate 72 near the limiting plate 5. The protective covers 73 are sleeved on the outside of the tension springs 74, covering the tension springs 74 to prevent foreign objects from being rolled in. Several slots 76 are evenly distributed on the outside of the movable frame 3. The spacing between the slots 76 is equidistant according to the floor height adjustment requirements. A through hole 75 is provided on the outside of the limiting plate 5. One end of the U-shaped insert 71 moves through the through hole 75 and is inserted into the slot 76, thereby fixing the position of the movable frame 3. A conical notch 77 is provided at the inlet of the slot 76. The angle of the conical notch 77 is 35 degrees to 40 degrees. The design of the conical notch 77 allows the U-shaped insert 71 to be quickly and accurately inserted into the slot 76.

[0033] Working principle or structural principle: When the position of the movable frame 3 needs to be adjusted, pull the U-shaped plug 71 outward to disengage it from the slot 76. At this time, the tension spring 74 is stretched to generate a restoring force. After the movable frame 3 is adjusted to the target position, release the U-shaped plug 71. Under the action of the tension spring 74, the U-shaped plug 71 automatically aligns with the conical notch 77 and slides into the slot 76. The protective cover 73 protects the tension spring 74 throughout the process to prevent entanglement. The 35-40 degree bevel design of the conical notch 77 ensures accurate insertion of the U-shaped plug 71. The connecting plate 72 simultaneously drives the U-shaped plugs 71 on both sides to lock together. The through hole 75 cooperates with the slot 76 to achieve quick positioning and fixation of the movable frame 3. The tension spring 74 should be inspected and maintained regularly. If the tension spring 74 is found to be unqualified, it should be replaced in time.

[0034] In summary, the trolley uses handwheel 62 to drive screw 61 to rotate, which in turn drives arc-shaped ejector block 64 to push the arc-shaped groove 65 of shelf 4, causing shelf 4 to unfold around the axis of rotation. Guide rod 66 slides along guide groove 67 to ensure stability, and locking nut 68 fixes the height, facilitating the display of items placed on shelf 4. When adjusting the moving frame 3, pulling U-shaped insert 71 disengages it from slot 76, and tension spring 74 provides a restoring force. After being released, U-shaped insert 71 automatically slides into and locks itself using conical notch 77. The protective cover 73 adopts a corrugated tube structure, which expands and contracts with tension spring 74. The overall design enables synchronous adjustment of shelf 4 height and angle, as well as rapid positioning of moving frame 3.

[0035] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A trolley with adjustable shelf height, comprising a body (1), a lifting display assembly (6), and an adjustment assembly (7), characterized in that, The vehicle body (1) is provided with a frame (2) on the top. Several movable frames (3) are installed on the outside of the frame (2) through an adjustment component (7). Limit plates (5) are fixedly connected to both ends of the movable frames (3). A shelf (4) is connected to the top of the movable frames (3) through a lifting display component (6). The lifting display assembly (6) includes a screw (61), and an arc-shaped ejector block (64) is fixedly connected to the top of the screw (61). The upper surface of the movable frame (3) is provided with a threaded hole (63) that is compatible with the screw (61). One side of the shelf (4) is rotatably connected to one side of the movable frame (3) through a rotating shaft. The bottom of the shelf (4) is provided with an arc-shaped groove (65) in the area opposite to the arc-shaped ejector block (64). The adjustment component (7) includes two U-shaped inserts (71), a connecting plate (72) is connected between the two U-shaped inserts (71), and several tension springs (74) are connected between the connecting plate (72) and the limiting plate (5). Several slots (76) are evenly provided on the outer side of the moving frame (3).

2. The adjustable-height trolley according to claim 1, characterized in that, The bottom of the shelf (4) is hinged with two guide rods (66), and the upper surface of the movable frame (3) has two guide grooves (67) that are adapted to the guide rods (66).

3. A height adjustable trolley according to claim 2, wherein, The bottom end of the guide rod (66) is movably connected to the guide groove (67) and fixedly connected to the limit block (69). The two guide rods (66) are located on both sides of the screw (61).

4. The adjustable deck height stroller of claim 1, wherein, A handwheel (62) is fixedly connected to the bottom of the screw (61), and a locking nut (68) is sleeved on the upper part of the screw (61).

5. An adjustable deck height stroller according to claim 1, wherein, A number of protective covers (73) are fixedly connected to the side of the connecting plate (72) near the limiting plate (5), and the protective covers (73) are sleeved on the outside of the tension spring (74).

6. An adjustable deck height cart according to claim 1, wherein, The limiting plate (5) has a through hole (75) on its outer side, and one end of the U-shaped plug (71) is inserted into the slot (76) through the through hole (75).

7. An adjustable height cart according to claim 6, wherein, The slot (76) has a conical notch (77) at its inlet, and the angle of the conical notch (77) is 35-40 degrees.

8. An adjustable deck height cart according to claim 1, wherein, The bottom of the vehicle body (1) is provided with rollers, and a handle is fixedly connected to one side of the vehicle body (1).

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