A lost foam casting box trolley universal wheel

By introducing a sliding block, guide rod, and elastic component structure into the swivel wheels of the container trolley, the problem of insufficient cushioning of the swivel wheels is solved, and vibration energy absorption and safety warning are achieved, thereby improving the safety and stability of transportation.

CN224447348UActive Publication Date: 2026-07-03BEIJING TIANZHE LOST FOAM CASTING TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING TIANZHE LOST FOAM CASTING TECH CO LTD
Filing Date
2025-06-26
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The existing swivel casters for container trolleys lack a cushioning mechanism, causing bumps to be directly transmitted to the goods, which can lead to breakage and damage in severe cases.

Method used

A universal wheel for a carrier trolley used in lost foam casting was designed. It adopts a structure of sliding base, guide rod, elastic element and connecting plate. It absorbs vibration energy through elastic deformation and prevents the universal wheel from jamming or losing steering ability through detector and warning light.

Benefits of technology

It effectively reduces the transmission of vibration to the interior of the goods, protects the safety of the goods, provides timely warnings to prevent safety accidents, and improves transportation stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a box carrying trolley technical field especially relates to a box carrying trolley universal wheel for lost foam casting, including box carrying trolley, mounting sleeve, sliding seat and universal wheel, install a plurality of mounting sleeves on box carrying trolley, slidingly set up sliding seat on mounting sleeve, be provided with universal wheel between two sliding seats of being similar, still include fixed base, guide rod and sliding block, four fixed bases are fixedly connected on box carrying trolley, two guide rods are fixedly connected on fixed base, slidingly set up sliding block on guide rod. Through the extrusion fixed base of box carrying trolley and move down, and fixed base extrusion connecting plate rotates, so that connecting plate drives sliding block along guide rod and slides, and extrudes first elastic part, to this will vibration energy be converted into elastic deformation energy and be absorbed, thereby reduce the vibration that transmits to the inside of box, effectively protect the safety of goods.
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Description

Technical Field

[0001] This utility model relates to the field of container trolley technology, and in particular to a universal wheel for a container trolley used in lost foam casting. Background Technology

[0002] The omnidirectional caster for container trolleys is a type of movable caster specifically designed for handling containers and goods. Its core function is to achieve flexible multi-directional movement through a 360° horizontal rotation structure, which significantly improves the efficiency of heavy-duty transportation.

[0003] Patent CN222372904U discloses a foldable flatbed logistics cart. It includes a flatbed cart, a handle, a support column, and casters. The handle is located at the top of the flatbed, and the support column is located at the bottom, with casters at the bottom of the support column. Using this patent, the goods to be transported are placed on the flatbed, and the casters move the cart. However, this existing patent has some shortcomings in practical use. Because the casters in this patent lack a cushioning mechanism, any bumps are directly transmitted to the flatbed and the goods, potentially causing the goods to break or be damaged.

[0004] Therefore, there is a need for a universal wheel for a lost foam casting trolley with a cushioning function. Utility Model Content

[0005] In order to overcome the disadvantage that the existing universal wheels of the above-mentioned patents have no buffer mechanism, any bumps will be directly transmitted to the trolley flatbed and the goods through the universal wheels, which may lead to the breakage and damage of the goods, this utility model provides a universal wheel for a lost foam casting trolley with a buffer function.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a universal wheel for a carrier trolley used in lost foam casting, comprising a carrier trolley, mounting sleeves, sliding blocks, and universal wheels. Multiple mounting sleeves are mounted on the carrier trolley, and sliding blocks are slidably mounted on each mounting sleeve. Universal wheels are positioned between adjacent sliding blocks. The trolley also includes fixed seats, guide rods, sliders, a first elastic element, a connecting plate, and fixed blocks. Four fixed seats are fixedly connected to the carrier trolley, and two guide rods are fixedly connected to each fixed seat. Sliding blocks are slidably mounted on each guide rod, and a first elastic element is fitted onto each guide rod. The two ends of the first elastic element are respectively connected to the fixed seats and the sliders. Two fixed blocks are fixedly connected to each sliding block, and a connecting plate is rotatably positioned between the fixed blocks and adjacent sliders.

[0007] Optionally, it also includes mounting blocks, fixing plates, slide rods, locking blocks, and a second elastic element. Two fixing plates are fixedly connected to the slide block. A slide rod is slidably mounted on the fixing plates. A locking block is fixedly connected to the slide rod. A second elastic element is sleeved on the slide rod. The two ends of the second elastic element are respectively connected to the fixing plates and the locking blocks. Two mounting blocks are fixedly connected to the caster wheel. The locking blocks are engaged in adjacent mounting blocks.

[0008] Optionally, it also includes a protective cover, a detector, and a warning light. The protective cover is fixedly connected to the caster wheel, the detector is installed on the protective cover, and the warning light is installed on the container trolley. Two detectors are electrically connected to a nearby warning light.

[0009] Alternatively, the protective shield may be made of a transparent material.

[0010] Optionally, two handles are fixedly connected to the container trolley.

[0011] Optionally, the mounting sleeve has two mounting holes.

[0012] Optionally, the card block can be trapezoidal.

[0013] Optionally, the handles are fitted with anti-slip sleeves.

[0014] Compared with the prior art, the present invention has the following technical effects: 1. By pressing the fixed seat downward by the trolley, the fixed seat presses the connecting plate to rotate, so that the connecting plate drives the slider to slide along the guide rod and presses the first elastic element, thereby converting the vibration energy into elastic deformation energy for absorption, thereby reducing the vibration transmitted to the inside of the trolley and effectively protecting the safety of the goods.

[0015] 2. By pressing the caster against the slide block, the mounting block on the caster is aligned with the locking block. After alignment, the slide rod is released, and the second elastic element rebounds, causing the slide rod and locking block to move inward, thereby locking the caster. Pressing the locking block can release the lock, making it easy to remove the caster.

[0016] 3. The detector monitors the environment inside the enclosure. When it detects debris, it transmits a signal to the control module and triggers an alarm light to remind operators to clean or check in time, preventing safety accidents caused by problems such as stuck casters or steering failure. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the carrier trolley, mounting sleeve, and slide.

[0019] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including the fixing seat, guide rod, and first elastic element.

[0020] Figure 4 This is a three-dimensional structural diagram of the mounting block, fixing plate, and sliding rod of this utility model.

[0021] Figure 5 This is a three-dimensional cross-sectional view of the components of this utility model, including the slide bar, the locking block, and the second elastic element.

[0022] Figure 6 This is a three-dimensional structural diagram of the protective cover, detector, and warning light components of this utility model.

[0023] In the attached diagram, the following labels are used: 1-carrying trolley, 2-mounting sleeve, 3-slide seat, 4-universal wheel, 5-fixed seat, 6-guide rod, 7-slider, 8-first elastic element, 9-connecting plate, 10-fixing block, 11-mounting block, 12-fixing plate, 13-slide rod, 14-locking block, 15-second elastic element, 16-protective cover, 17-detector, 18-warning light. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: A universal wheel for a carrier trolley used in lost foam casting, see reference. Figures 1-6 As shown, the device includes a container trolley 1, mounting sleeves 2, sliding blocks 3, and casters 4. Two mounting sleeves 2 are symmetrically mounted on the left and right sides of the bottom of the container trolley 1. Sliding blocks 3 are mounted on the mounting sleeves 2, and casters 4 are positioned between adjacent sliding blocks 3. The device also includes a fixed seat 5, guide rods 6, sliders 7, a first elastic element 8, a connecting plate 9, and fixing blocks 10. Fixed seats 5 are symmetrically mounted on the left and right sides of the bottom of the container trolley 1 by welding. The fixed seats 5 are located between adjacent mounting sleeves 2. Guide rods 6 are welded to both sides of the fixed seat 5. Sliding blocks 7 are mounted on the guide rods 6, and a first elastic element 8 is fitted onto the guide rods 6. The two ends of the first elastic element 8 are connected to the fixed seat 5 and the slider 7, respectively. The first elastic element 8 is a damping spring. Two fixing blocks 10 are fixedly connected to the sliding blocks 3, and a connecting plate 9 is rotatably positioned between the fixing blocks 10 and the adjacent slider 7.

[0026] See Figure 1 , Figure 2 and Figure 6 As shown, handles are fixedly connected to both the left and right sides of the upper part of the container trolley 1.

[0027] See Figures 1-6 As shown, the mounting sleeve 2 has two mounting holes, which facilitates the mounting sleeve 2 to be installed on the carrier trolley 1.

[0028] See Figure 1 , Figure 2and Figure 6 As shown, the handles are covered with anti-slip sleeves.

[0029] When this device is needed, the item to be transported is first placed in the container trolley 1. During transport, push the handle to move the omnidirectional wheels 4 and the container trolley 1 together. During transport, the slide 3 slides on the mounting sleeve 2, and at the same time, the container trolley 1 presses the fixed seat 5 to move downward. The fixed seat 5 presses the connecting plate 9 to rotate, so that the connecting plate 9 drives the slider 7 to slide along the guide rod 6 and presses the first elastic element 8. In this way, the vibration energy is converted into elastic deformation energy for absorption, thereby reducing the vibration transmitted to the inside of the container and effectively protecting the safety of the goods. In addition, the first elastic element 8 allows the omnidirectional wheels 4 to swing slightly and automatically reset when subjected to force.

[0030] Example 2: Based on Example 1, refer to Figure 1 , Figure 4 and Figure 5 As shown, it also includes mounting blocks 11, fixing plates 12, sliding rods 13, locking blocks 14, and second elastic elements 15. Fixing plates 12 are welded to both sides of the slide block 3. Sliding rods 13 are slidably mounted on the fixing plates 12. Locking blocks 14 are fixedly connected to the ends of the sliding rods 13. Second elastic elements 15 are sleeved on the sliding rods 13. The two ends of the second elastic elements 15 are respectively connected to the fixing plates 12 and the locking blocks 14. Mounting blocks 11 are fixedly connected to both sides of the upper part of the caster wheel 4. Locking blocks 14 are locked into the adjacent mounting blocks 11.

[0031] See Figure 5 As shown, the card block 14 is trapezoidal, which facilitates the opening of the mounting block 11.

[0032] Before using this device, first use bolts to install the mounting sleeve 2 on the trolley 1, then pull the two sliding rods 13. The sliding rods 13 drive the locking block 14 to move outward, and the second elastic element 15 is compressed accordingly. Then, press the caster 4 against the slide block 3 so that the mounting block 11 on the caster 4 is aligned with the locking block 14. After alignment, release the sliding rods 13. The second elastic element 15 will then rebound and drive the sliding rods 13 and the locking block 14 to move inward, thereby locking the caster 4. Pressing the locking block 14 can release the lock, thus facilitating the removal of the caster 4.

[0033] See Figure 1 and Figure 6 As shown, it also includes a protective cover 16, a detector 17, and a warning light 18. The protective cover 16 is fixedly connected to the caster wheel 4. The detector 17 is installed on the outside of the protective cover 16 by means of bolts. The detector 17 contains a control module. The left and right sides of the container trolley 1 are equipped with warning lights 18 by means of bolts. The two detectors 17 are electrically connected to a nearby warning light 18. The detector 17 can indicate whether there are foreign objects inside the protective cover 16.

[0034] See Figure 1 and Figure 6 As shown, the protective cover 16 is made of transparent material.

[0035] During transportation, the protective cover 16 covers the casters 4 to protect them. At the same time, the detector 17 monitors the environment inside the cover. When foreign objects are detected, the detector 17 transmits a signal to the control module and triggers the warning light 18 to remind the operator to clean or check in time to prevent safety accidents caused by problems such as the casters 4 getting stuck or losing steering.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lost foam casting box trolley universal wheel, comprising a box trolley (1), a mounting sleeve (2), a sliding seat (3) and a universal wheel (4), a plurality of mounting sleeves (2) are mounted on the box trolley (1), the sliding seat (3) is slidingly arranged on the mounting sleeve (2), and the universal wheel (4) is arranged between two adjacent sliding seats (3), characterized in that, It also includes a fixed seat (5), a guide rod (6), a slider (7), a first elastic element (8), a connecting plate (9), and a fixed block (10). Four fixed seats (5) are fixedly connected to the trolley (1). Two guide rods (6) are fixedly connected to the fixed seats (5). A slider (7) is slidably arranged on the guide rod (6). A first elastic element (8) is sleeved on the guide rod (6). The two ends of the first elastic element (8) are respectively connected to the fixed seat (5) and the slider (7). Two fixed blocks (10) are fixedly connected to the slide (3). A connecting plate (9) is rotatably arranged between the fixed block (10) and the adjacent slider (7).

2. The universal wheel of the box trolley for lost foam casting according to claim 1, characterized in that, It also includes mounting blocks (11), fixing plates (12), sliding rods (13), locking blocks (14), and second elastic elements (15). Two fixing plates (12) are fixedly connected to the slide block (3). A sliding rod (13) is slidably mounted on the fixing plate (12). A locking block (14) is fixedly connected to the sliding rod (13). A second elastic element (15) is fitted on the sliding rod (13). The two ends of the second elastic element (15) are respectively connected to the fixing plate (12) and the locking block (14). Two mounting blocks (11) are fixedly connected to the caster wheel (4). The locking block (14) is inserted into the adjacent mounting block (11).

3. The universal wheel of the box trolley for lost foam casting according to claim 2, characterized in that, It also includes a protective cover (16), a detector (17) and a warning light (18). The protective cover (16) is fixedly connected to the caster wheel (4), the detector (17) is installed on the protective cover (16), and the warning light (18) is installed on the trolley (1). The two detectors (17) are electrically connected to a nearby warning light (18).

4. The universal wheel for a carrier trolley in lost foam casting according to claim 3, characterized in that, The protective cover (16) is made of transparent material.

5. The universal wheel of the box trolley for lost foam casting according to claim 4, characterized in that, Two handles are fixedly connected to the container trolley (1).

6. The universal wheel of the box trolley for lost foam casting according to claim 5, characterized in that, The mounting sleeve (2) has two mounting holes.

7. The universal wheel of the box trolley for lost foam casting according to claim 6, characterized in that, The card block (14) is trapezoidal.

8. The universal wheel of the box trolley for lost foam casting according to claim 7, characterized in that, The handles are covered with anti-slip sleeves.