Storage transfer trolley

By combining the lifting platform and lever mechanism with the counterweight mechanism, the lifting of goods is achieved, solving the problem of oil leakage in the hydraulic system of manual forklifts, reducing the labor intensity of workers and improving the stability of the equipment.

CN224258187UActive Publication Date: 2026-05-19TOYOTA AUTOMOBILE STORAGE & TRADING (CHANGSHU) CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TOYOTA AUTOMOBILE STORAGE & TRADING (CHANGSHU) CO LTD
Filing Date
2025-05-19
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing manual forklift hydraulic systems are prone to oil leaks, leading to instability during long-term use.

Method used

The system uses a combination of a lifting platform and a lever mechanism to lift and lower goods, eliminating the need for a hydraulic system and reducing manual labor intensity by utilizing a counterweight mechanism.

Benefits of technology

Without the need for a hydraulic device, the labor intensity of workers during the lifting of the platform is reduced, the problem of oil leakage in the hydraulic system is solved, and the stability and reliability of the equipment are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a storage transfer trolley, and belongs to the field of storage equipment. The storage transfer trolley comprises a trolley frame, a lifting table, a lever mechanism and trundles, the lifting table is installed on the trolley frame and can move in the vertical direction, the lever mechanism is connected with the lifting table, the trundles are installed on the trolley frame and the lever mechanism, and when the lever mechanism rotates within a preset angle range, the lifting table moves in the vertical direction. Goods on the lifting platform can ascend and descend through the lever mechanism, the lever mechanism can reduce the labor intensity of workers when the lifting platform ascends and descends under the condition that an oil pressure device is not needed, and the problem that in the prior art, a manual forklift hydraulic system is prone to oil leakage is solved.
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Description

Technical Field

[0001] This utility model belongs to the field of warehousing equipment, specifically a warehousing transfer vehicle. Background Technology

[0002] In the warehousing industry, it is often necessary to move goods from the bottom of the shelves to higher positions. The existing technology uses manual forklifts as transfer vehicles. However, most manual forklifts in the current technology need to be equipped with hydraulic devices to achieve hydraulic lifting. The hydraulic system of this type of manual forklift is prone to failure and is prone to problems such as oil leakage after long-term use. Utility Model Content

[0003] Purpose of the utility model: To provide a warehouse transfer vehicle that achieves lifting and lowering of goods through the cooperation of a lifting platform and a lever mechanism, without the need for a hydraulic device, thus solving the problem of oil leakage that is common in the hydraulic systems of existing manual forklifts.

[0004] The technical solution of this utility model is as follows: a warehouse transfer vehicle includes: a frame, a lifting platform, a lever mechanism and casters.

[0005] The lifting platform is mounted on the vehicle frame and can move vertically.

[0006] The lever mechanism is connected to the lifting platform, and the casters are mounted on the vehicle frame.

[0007] When the lever mechanism rotates within a predetermined angle range, it causes the lifting platform to move vertically.

[0008] In a further embodiment, the lever mechanism includes a central shaft, an eccentric component, and an operating component.

[0009] The central shaft is mounted on the lifting platform, the eccentric component and the operating component are mounted on the central shaft, and the casters are mounted on the eccentric component.

[0010] The length of the operating component is greater than the length of the eccentric component.

[0011] The operating component is used to drive the eccentric component to rotate. Compared with the technical solution of mounting the central shaft on the frame, the technical solution of mounting the central shaft on the lifting platform can reduce the number of frame crossbeams and further reduce the weight of the transfer vehicle. The casters on the eccentric component can enable the lever mechanism to support the lifting platform to rise to the predetermined position while facilitating the movement of the transfer vehicle.

[0012] In a further embodiment, two sets of eccentric components and operating components are disposed on both sides of the lifting platform, and each eccentric component is equipped with two casters.

[0013] When the lever mechanism raises the lifting platform to the predetermined position, the two casters on the eccentric component come into contact with the ground. By having both casters in contact with the ground simultaneously, the stability of the lever mechanism during the movement of the transfer vehicle can be ensured.

[0014] In a further embodiment, the warehouse transfer vehicle also includes a first counterweight mechanism.

[0015] The first counterweight mechanism includes: a first counterweight block and a first pulley system.

[0016] The first counterweight is mounted on the frame, and the first pulley block connects the frame, the first counterweight, and the lifting platform. The first counterweight can move vertically.

[0017] When the lifting platform moves upward, the first counterweight applies an upward force to the lifting platform through the first pulley group. The first counterweight mechanism can reduce the force that the staff needs to exert on the lever mechanism when the goods are lifted and lowered, thus further reducing the labor intensity of the staff.

[0018] In a further embodiment, the warehouse transfer vehicle also includes a second counterweight mechanism.

[0019] The second counterweight mechanism further includes a second pulley block, which connects the frame, the first counterweight block, and the lever mechanism.

[0020] When the lifting platform moves downward, the lever mechanism applies an upward force to the first counterweight through the second pulley group, enabling the lever mechanism to assist the lifting platform in overcoming the weight of the counterweight and lowering the lifting platform to the bottom when it moves downward.

[0021] In a further embodiment, the second counterweight mechanism further includes a second counterweight block.

[0022] The second counterweight can move vertically and is positioned between the first counterweight and the lever mechanism.

[0023] The second pulley block connects the frame, the first counterweight, the lever mechanism, and the second counterweight. The second pulley block includes a second rope, which is movably engaged with the lever mechanism and the second counterweight.

[0024] When the lifting platform moves to the bottom, the second counterweight applies a force to the second rope, causing the two parts of the second rope on both sides of the second counterweight to be set at an angle, thereby preventing the first counterweight from lifting the lever mechanism through the second rope.

[0025] In a further embodiment, the lifting platform is equipped with multiple rollers, which facilitate the movement of goods on the lifting platform and make loading and unloading easier.

[0026] In a further embodiment, the frame and / or lever mechanism are composed of a tubular structure, which further reduces the weight of the warehouse transfer vehicle compared to prior art forklifts.

[0027] In a further embodiment, the frame includes two baffles located on the upper sides of the lifting platform, so that the goods are placed between the two baffles. When the goods are narrow, the baffles can reduce the probability of the goods tipping off the side and falling out of the transfer vehicle.

[0028] The beneficial effects of this utility model are: by combining the lifting platform and the lever mechanism, this application enables workers to lift and lower the goods on the lifting platform after they are placed on it. The lever mechanism can reduce the labor intensity of workers when lifting and lowering the platform without the need for a hydraulic device, and solves the problem of oil leakage that is common in the hydraulic systems of existing manual forklifts. Attached Figure Description

[0029] Figure 1 This is an isometric schematic diagram of the overall structure of this utility model.

[0030] Figure 2 This is a schematic diagram showing the cooperation of the lifting platform, lever mechanism, and first counterweight mechanism of this utility model.

[0031] Figure 3 This is a schematic diagram showing the coordination of the lever mechanism, the first counterweight, and the second counterweight mechanism of this utility model.

[0032] The attached figures are labeled as follows: frame 1, stop 11, lifting platform 2, roller 21, lever mechanism 3, central shaft 31, eccentric part 32, operating part 33, caster 4, first counterweight mechanism 5, first counterweight block 51, first pulley block 52, first rope 521, second counterweight mechanism 6, second pulley block 61, vertical rod 62, second counterweight block 63, second rope 64. Detailed Implementation

[0033] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0034] This utility model discloses a warehouse transfer vehicle, which realizes the lifting and lowering of goods through the cooperation of a lifting platform and a lever mechanism. It can reduce the labor intensity of workers when lifting the platform without the need for a hydraulic device, and solves the problem of oil leakage that is common in the hydraulic systems of existing manual forklifts.

[0035] like Figure 1 The warehouse transfer vehicle shown includes: a frame 1, a lifting platform 2, a lever mechanism 3, and casters 4.

[0036] The lifting platform 2 is installed on the vehicle frame 1. The lifting platform 2 can move vertically and is used to place goods, such as... Figure 1 The lifting platform 2 shown is mounted on the vertical rod of the frame 1. In other embodiments, the lifting platform 2 and the frame 1 can be connected by a vertical guide rail mechanism, which is not a limitation.

[0037] The lever mechanism 3 is connected to the lifting platform 2, and the caster 4 is installed on the frame 1 and the lever mechanism 3. The caster 4 can be a movable caster 4 with brakes, but is not limited to this.

[0038] When the lever mechanism 3 rotates within a predetermined angle range, it causes the lifting platform 2 to move vertically.

[0039] like Figure 1-3 The lever mechanism 3 shown includes: a central shaft 31, an eccentric component 32, and an operating component 33.

[0040] The central shaft 31 is mounted on the lifting platform 2, the eccentric component 32 and the operating component 33 are mounted on the central shaft 31, and the caster 4 is mounted on the eccentric component 32.

[0041] The length of the operating component 33 is greater than the length of the eccentric component 32, where the lengths of the operating component 33 and the eccentric component 32 refer to the longest straight-line distance from the operating component 33 to the center of the central axis 31, and the longest straight-line distance from the eccentric component 32 to the center of the central axis 31.

[0042] Operating component 33 is used to drive the eccentric component 32 to rotate, such as Figure 1 The operating component 33 and the eccentric component 32 shown are trapezoidal and triangular structures composed of pipes, respectively. The operating component 33 drives the eccentric component 32 to rotate around the central axis 31 through the central axis 31.

[0043] Two sets of eccentric components 32 and operating components 33 are set on both sides of the lifting platform 2. Each eccentric component 32 is equipped with two casters 4. At this time, the length of the eccentric component 32 refers to the longest straight-line distance from the caster 4 on the eccentric component to the center of the central shaft 31.

[0044] When the lever mechanism 3 raises the lifting platform 2 to the predetermined position, the two casters 4 on the eccentric component 32 come into contact with the ground.

[0045] like Figure 1 and2 The lifting platform 2 shown is equipped with multiple rollers 21.

[0046] like Figure 1-3 The frame 1 and / or lever mechanism 3 shown are composed of tubular structures, wherein the frame 1 and lever mechanism 3 can be composed of tubular structures such as aluminum profiles or steel pipes.

[0047] like Figure 1 The frame 1 shown includes two guide rails 11, located on either side above the lifting platform 2, allowing goods to be placed between the two guide rails 11, such as... Figure 1 The stop 11 shown is a crossbeam. The direction of movement of the goods on the roller 21 is the extension direction of the crossbeam. In other embodiments, multiple horizontally distributed vertical rods or multiple vertically distributed crossbeams can be set to accommodate goods of different heights, and are not limited thereto.

[0048] like Figure 1 and 2 The warehouse transfer vehicle shown also includes: a first counterweight mechanism 5.

[0049] The first counterweight mechanism 5 includes: a first counterweight block 51 and a first pulley block 52, such as Figure 2 The first pulley assembly 52 shown includes: a fixed pulley installed on the frame 1, a movable pulley installed on the lifting platform 2, and a first rope 521 with the frame 1 and the first counterweight 51 connected at both ends and arranged around the fixed pulley and the movable pulley in the middle.

[0050] The first counterweight 51 is mounted on the frame 1. The first pulley block 52 connects the frame 1, the first counterweight 51, and the lifting platform 2. The first counterweight 51 can move vertically. Figure 1 The first counterweight 51 shown is sleeved on the vertical rod of the frame 1. In other embodiments, the first counterweight 51 and the frame 1 can be connected by a vertical guide rail mechanism, which is not a limitation.

[0051] When the lifting platform 2 moves upward, the first counterweight 51 applies an upward force to the lifting platform 2 through the first pulley group 52.

[0052] like Figure 1 and 3 The warehouse transfer vehicle shown also includes: a second counterweight mechanism 6.

[0053] The second counterweight mechanism 6 includes: a second pulley block 61, which connects the frame 1, the first counterweight block 51, and the lever mechanism 3.

[0054] When the lifting platform 2 moves downward, the lever mechanism 3 applies an upward force to the first counterweight 51 through the second pulley block 61, such as... Figure 3The lever mechanism 3 shown cooperates with the operating component 33 and the second pulley group 61 to use the lever mechanism 3 to overcome the weight of the first counterweight 51 and lower the lifting platform 2.

[0055] The second counterweight mechanism 6 also includes: a second counterweight block 63.

[0056] The second counterweight 63 can move vertically and is positioned between the first counterweight 51 and the lever mechanism 3. Figure 1 The lifting platform 2 shown is provided with a vertical rod 62, and a second counterweight 63 is sleeved on the vertical rod 62. In other embodiments, the vertical rod 62 can be installed on the frame 1, and the second counterweight 63 and the vertical rod 62 can be connected by a vertical guide rail mechanism, which is not limited to this.

[0057] The second pulley block 61 connects the frame 1, the first counterweight 51, the lever mechanism 3, and the second counterweight 63. The second pulley block 61 includes a second rope 64, which is movably engaged with the lever mechanism 3 and the second counterweight 63.

[0058] like Figure 3 As shown, when the lifting platform 2 moves to the bottom, the weight of the second counterweight 63 exerts a downward force on the second rope 64, causing the two parts of the second rope 64 on both sides of the second counterweight 63 to be set at an angle.

[0059] like Figure 3 The second pulley assembly 61 shown includes: a fixed pulley mounted on the frame 1, a movable pulley mounted on the operating member 33 of the lever mechanism 3, and a second rope 64 connected at both ends to two first counterweights 51, with the fixed pulley and the movable pulley arranged around the middle of the rope. Figure 3 The second rope 64 shown passes through the second counterweight 63 in the middle. In other embodiments, two movable pulleys can also be provided on the second counterweight 63 so that the second rope 64 can cooperate with the second counterweight 63 through the movable pulleys, so that the second rope 64 can be movably cooperated with the lever mechanism 3 and the second counterweight 63. This is not a limitation.

[0060] Working method: Place the goods on the lifting platform 2.

[0061] When it is necessary to raise the goods to the predetermined position, the rotating lever mechanism 3 raises the lifting platform 2 to the predetermined position. During this process, the first counterweight mechanism 5 applies an upward force to the lifting platform 2, reducing the force required to operate the lever mechanism 3.

[0062] When it is necessary to lower the goods to the bottom position, the rotating lever mechanism 3 causes the lever mechanism 3 to pull the first counterweight 51 through the second rope 64, causing the first counterweight 51 to rise and the lifting platform 2 to fall to the bottom. At this time, the second counterweight 63 prevents the first counterweight 51 from lifting the operating part 33 of the lever mechanism 3 through the second rope 62.

[0063] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A warehouse transfer vehicle, characterized in that, include: Frame, lifting platform, lever mechanism, and casters; The lifting platform is mounted on the vehicle frame and can move vertically. The lever mechanism is connected to the lifting platform, and the casters are mounted on the vehicle frame; When the lever mechanism rotates within a predetermined angle range, it causes the lifting platform to move vertically.

2. The warehouse transfer vehicle according to claim 1, characterized in that, The lever mechanism includes: a central shaft, an eccentric component, and an operating component; The central shaft is mounted on the lifting platform, the eccentric component and the operating component are mounted on the central shaft, and the casters are mounted on the eccentric component; The length of the operating component is greater than the length of the eccentric component; The operating component is used to drive the eccentric component to rotate.

3. The warehouse transfer vehicle according to claim 2, characterized in that, The two sets of eccentric components and operating components are arranged on both sides of the lifting platform, and each eccentric component is equipped with two casters; When the lever mechanism raises the lifting platform to the predetermined position, the two casters on the eccentric component come into contact with the ground.

4. The warehouse transfer vehicle according to claim 1, characterized in that, Also includes: First counterweight mechanism; The first counterweight mechanism includes: a first counterweight block and a first pulley block; The first counterweight is mounted on the frame, and the first pulley block connects the frame, the first counterweight, and the lifting platform. The first counterweight can move in the vertical direction. When the lifting platform moves upward, the first counterweight applies an upward force to the lifting platform through the first pulley group.

5. A warehouse transfer vehicle according to claim 4, characterized in that, Also includes: Second counterweight mechanism; The second counterweight mechanism includes: a second pulley block, which connects the frame, the first counterweight block, and the lever mechanism; When the lifting platform moves downward, the lever mechanism applies an upward force to the first counterweight block through the second pulley group.

6. A warehouse transfer vehicle according to claim 5, characterized in that, The second counterweight mechanism further includes: a second counterweight block; The second counterweight can move vertically and is positioned between the first counterweight and the lever mechanism. The second pulley block connects the frame, the first counterweight, the lever mechanism, and the second counterweight. The second pulley block includes a second rope, which is movably engaged with the lever mechanism and the second counterweight. When the lifting platform moves to the bottom, the second counterweight applies a force to the second rope, causing the two parts of the second rope on both sides of the second counterweight to be set at an angle.

7. A warehouse transfer vehicle according to claim 1, characterized in that, The lifting platform is equipped with multiple rollers.

8. A warehouse transfer vehicle according to claim 1, characterized in that, The frame and / or lever mechanism are composed of tubular structures.

9. A warehouse transfer vehicle according to claim 1, characterized in that, The vehicle frame includes two stoppers located on both sides above the lifting platform, allowing goods to be placed between the two stoppers.