A retractable forklift fork carriage

Abstract

This utility model discloses a retractable forklift fork carriage, comprising a fork carriage with L-shaped forks on its front side. A hydraulic cylinder is fixedly connected to the back of the L-shaped forks, a second hydraulic pump is fixedly connected to the top of the hydraulic cylinder, a connection port is fixedly connected to the top of the hydraulic cylinder, and a protective plate is fixedly connected to the top of the hydraulic cylinder. A fork extension plate is fixedly connected to the front of the L-shaped forks, a telescopic fork is fixedly connected to the front of the hydraulic cylinder, and an extension fork is fixedly connected to the front of the telescopic fork. This retractable forklift fork carriage, by having a hydraulic cylinder fixedly connected to the back of the L-shaped forks, can drive the telescopic fork to extend the extension fork, thus lengthening the forks and facilitating the lifting of extra-long goods. Furthermore, the upper and lower moving blocks contain electric screws controlled by a screw motor, facilitating lateral adjustment of the forks without frequent forklift position adjustments.

Description

Technical Field

[0001] This utility model relates to the technical field of forklift fork carriage devices, specifically a telescopic forklift fork carriage. Background Technology

[0002] The forklift fork carriage, also known as the mast or forklift, is one of the key components of a forklift. It is mainly used to support and lift goods to achieve loading, unloading, stacking, and handling. Forklifts and forklift fork carriages play an important role in various fields that require lifting, handling, or loading and unloading.

[0003] The prior art patent document CN215666973U provides a forklift fork carriage, including an upper crossbeam and a lower crossbeam arranged in parallel. The upper and lower crossbeams are fixedly connected to two columns on one side, arranged in parallel. The upper and lower ends of the columns are fixedly connected to the upper and lower crossbeams respectively, and roller shafts are provided on the outer side of the columns. A connecting plate is fixedly connected between the upper and lower crossbeams, with its upper and lower ends fixedly connected to the upper and lower crossbeams respectively. The rear side of the connecting plate is fixedly connected to the columns. Fork stops extend outwards from both ends of the upper and lower crossbeams. This application uses a connecting plate to fix the upper and lower crossbeams together, ensuring the connection strength of the upper and lower crossbeams. The absence of side plates at both ends of the crossbeams reduces costs, enhances the driver's visibility, and improves safety performance.

[0004] Although the device has many beneficial effects, it still has the following problems: When using the fork carriage, since the size and specifications of the fork carriage are fixed, it is not convenient to handle goods stacking positions that are wide or have narrow aisles, resulting in insufficient applicability. Secondly, when the fork carriage is connected to the forklift, the forks need to be aligned with the empty part in the middle of the palletizer before the goods can be lifted. If the error is large, forcibly lifting the goods may cause the goods on the palletizer to fall off due to the swing of the palletizer, requiring frequent adjustment of the forklift position to align with the palletizer, making the forklift operation cumbersome. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the aforementioned issues, such as the fixed size of the fork carriage making it inconvenient for handling goods in wide or narrow aisle stacking positions, insufficient applicability, and the cumbersome forklift operation requiring frequent adjustments to align with the palletizer when connected to the forklift, this solution aims to address these problems.

[0008] Therefore, the purpose of this utility model is to provide a telescopic forklift fork carriage. By extending the length of the L-shaped forks, it is convenient to lift and transport long goods or to use in narrow stacking positions, thus having good applicability. At the same time, an upper moving block and a lower moving block are movably connected inside the mast body of the device. An electric screw structure is provided inside the upper moving block and the lower moving block, which facilitates the lateral movement of the fork carriage. When there is a small forklift error, it is not necessary to move the entire forklift, thus having good convenience.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] A telescopic forklift fork carriage includes a fork carriage, an L-shaped fork on the front of the fork carriage, a hydraulic cylinder fixedly connected to the back of the L-shaped fork, a second hydraulic pump fixedly connected to the top of the hydraulic cylinder, a connection port fixedly connected to the top of the hydraulic cylinder, a protective plate fixedly connected to the top of the hydraulic cylinder, a fork extension plate provided at the output end of the L-shaped fork, a telescopic fork fixedly connected to the front of the hydraulic cylinder, and an extension fork fixedly connected to the front of the telescopic fork.

[0012] As a preferred embodiment of the telescopic forklift carriage of this utility model, the back of the forklift carriage is provided with a mast body, the mast body is provided with an upper moving block and a lower moving block inside, the upper moving block and the lower moving block are provided with a sliding groove, the sliding groove is slidably connected to a slider, the bottom of the slider is fixedly connected to the mast body, the upper moving block and the lower moving block are connected to an electric lead screw by a thread, the two ends of the electric lead screw are connected to a connecting plate by a thread, and the side of the connecting plate is fixedly connected to a lead screw motor.

[0013] As a preferred embodiment of the telescopic forklift carriage of this utility model, a fork rod is fixedly connected inside the fork carriage, an L-shaped fork is fixedly connected to the surface of the fork rod, and a fork fixing plate is fixedly connected to the bottom of the fork rod. The fork fixing plate can fix the fork in place and prevent it from swinging due to a large number of forks.

[0014] As a preferred embodiment of the telescopic forklift carriage of this utility model, a top plate is fixedly connected to the top of the mast body, a rear plate is fixedly connected to the back of the mast body, a guide fork is fixedly connected to the front of the mast body, a groove is provided on the top of the guide fork, and a fork wheel is connected to the groove through a rotating shaft.

[0015] In a preferred embodiment of the retractable forklift carriage of this utility model, a sliding rod is fixedly connected to the bottom of the upper moving block and the top of the lower moving block, and a movable block is movably connected to the surface of the sliding rod. The forklift carriage fixedly connected to the front of the movable block can be raised and lowered through the movable block and the sliding rod.

[0016] In a preferred embodiment of the telescopic forklift carriage of this utility model, the electric lead screw runs through the interior of the rear plate, and a connecting plate is fixedly connected to the side of the rear plate. The upper and lower moving blocks can move along the direction of the electric lead screw through the electric lead screw, and misalignment will not occur.

[0017] In a preferred embodiment of the retractable forklift carriage of this utility model, a placement groove is provided on the back of the movable block, and a first hydraulic pump is fixedly connected inside the placement groove. By fixing the first hydraulic pump inside the placement groove, the first hydraulic pump can be connected through the control system of the forklift to drive the movable block.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This type of telescopic forklift fork carriage has telescopic forks on the front of the L-shaped forks, and extension forks are fixedly connected to the front of the telescopic forks. When needed, a second hydraulic pump can be connected to a hydraulic cylinder to drive the telescopic forks fixedly connected to the front of the hydraulic cylinder to extend and retract, thereby driving the extension forks on the front of the telescopic forks to lengthen the L-shaped forks. This makes it convenient to transport longer goods or palletizers in narrow areas, and it has good applicability.

[0021] This type of extendable forklift fork carriage consists of an upper moving block and a lower moving block connected by a slider inside the mast body of the device. A lead screw runs through the interior of the upper and lower moving blocks. When the forklift needs to lift goods but there is an error in the position of the goods, the lead screw motor, which is connected to the forklift control system, drives the electric lead screw, causing the upper and lower moving blocks to move along the electric lead screw. This moves the sleeved moving blocks, and at the same time, the fork carriage connected to the moving blocks is also moved, thereby realizing the lateral movement of the fork carriage. When an error occurs, there is no need to change the position of the forklift. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the overall structure of a retractable forklift fork carriage according to the present invention.

[0024] Figure 2 This is a schematic diagram of a retractable forklift fork mast structure according to the present invention;

[0025] Figure 3 This is a schematic diagram of a retractable forklift fork carriage structure according to the present invention;

[0026] Figure 4 This is a schematic diagram of a retractable forklift fork carriage slide bar structure according to the present invention.

[0027] The following are the labels in the diagram: 1. Mast body; 2. Lower moving block; 3. Top plate; 4. Slide rod; 5. Upper moving block; 6. Movable block; 7. First hydraulic pump; 8. Placement slot; 9. Fork carriage; 10. Fork rod; 11. Fork fixing plate; 12. Guide fork; 13. Fork wheel; 14. Rear plate; 15. Slide groove; 16. Sliding block; 17. Electric lead screw; 18. Connecting plate; 19. Lead screw motor; 20. L-shaped fork; 21. Fork extension plate; 22. Extended fork; 23. Telescopic fork; 24. Hydraulic cylinder; 25. Second hydraulic pump; 26. Connection port; 27. Protective plate. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0030] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0033] This utility model provides an overall structural diagram of an embodiment of a retractable forklift fork carriage, including:

[0034] Please see Figures 1-4 This embodiment of a telescopic forklift fork carriage 9 includes a fork carriage 9, an L-shaped fork 20 on the front of the fork carriage 9, a hydraulic cylinder 24 fixedly connected to the back of the L-shaped fork 20, a second hydraulic pump 25 fixedly connected to the top of the hydraulic cylinder 24, a connection port 26 fixedly connected to the top of the hydraulic cylinder 24, a protective plate 27 fixedly connected to the top of the hydraulic cylinder 24, a fork extension plate 21 provided at the output end of the L-shaped fork 20, a telescopic fork 23 at the output end of the hydraulic cylinder 24, and an extension fork 22 fixedly connected to the front of the telescopic fork 23.

[0035] It is worth noting that, in order to allow the fork carriage 9 to move laterally, specifically, the back of the fork carriage 9 is provided with a mast body 1. Inside the mast body 1, there are upper moving blocks 5 and lower moving blocks 2. The upper moving blocks 5 and lower moving blocks 2 are provided with sliding grooves 15. A slider 16 is slidably connected inside the sliding grooves 15. The bottom of the slider 16 is fixedly connected to the mast body 1. An electric lead screw 17 is threadedly connected inside the upper moving blocks 5 and lower moving blocks 2. The two ends of the electric lead screw 17 are threadedly connected to connecting plates 18. A lead screw motor 19 is fixedly connected to the side of the connecting plate 18. The lead screw motor 19 is connected through the connection line of the forklift control system and is operated by the driver through the operating system on the forklift instrument panel.

[0036] Next, in order to prevent the forks from swinging due to the weight of the goods during transport, and causing the forks to swing as well, the fork carriage 9 is specifically equipped with a fork rod 10 inside, an L-shaped fork 20 is fixedly connected to the surface of the fork rod 10, and a fork fixing plate 11 is fixedly connected to the bottom of the fork rod 10.

[0037] Meanwhile, in order to facilitate the adjustment of the driving direction when driving the forklift, specifically, a top plate 3 is fixedly connected to the top of the mast body 1, a rear plate 14 is fixedly connected to the back of the mast body 1, and a guide fork 12 is fixedly connected to the front of the mast body 1. The top of the guide fork 12 is provided with a groove, and a fork wheel 13 is connected to the groove through a rotating shaft.

[0038] Furthermore, to facilitate the movement of the movable block 6, specifically, the bottom of the upper movable block 5 and the top of the lower movable block 2 are fixedly connected to a sliding rod 4, and the surface of the sliding rod 4 is movably connected to the movable block 6.

[0039] It is worth noting that, in order to enable the upper moving block 5 and the lower moving block 2 to move straight along a fixed direction, specifically, an electric lead screw 17 passes through the interior of the rear plate 14, and a connecting plate 18 is fixedly connected to the side of the rear plate 14.

[0040] Finally, in order to drive the fork carriage 9 fixed on the front of the movable block 6, a placement slot 8 is provided on the back of the movable block 6. A first hydraulic pump 7 is fixedly connected inside the placement slot 8. The first hydraulic pump 7 is connected to the hydraulic cylinder on the forklift through the connection line of the forklift control system and is operated by the driver through the operating system on the forklift dashboard.

[0041] In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0042] Combination Figures 1-4 The telescopic forklift carriage 9 of this embodiment is used in the following way:

[0043] 1: When using this type of telescopic forklift fork carriage 9, first start the forklift on which the forklift fork carriage 9 is installed. Then connect the mast body 1 to the hydraulic cylinder on the forklift through the connection cable of the forklift control system and have the driver operate it through the operating system on the forklift instrument panel to lower the forklift fork carriage 9. It can be used when the forklift fork carriage 9 is about 10mm-30mm from the ground.

[0044] 2: When a forklift equipped with the fork carriage 9 needs to transport long goods or enter a narrow space for forking, the second hydraulic pump 25 can be controlled by operating the forklift's instrument panel to drive the second hydraulic cylinder 24. This allows the telescopic fork 23 on the front of the hydraulic cylinder 24 to extend, and the extension fork 22 at the top of the telescopic fork 23 to extend as well, thus lengthening the forks to facilitate the transport of longer goods. At the same time, the extended forks can be inserted into the narrow stacking position to lift and transport goods in narrow areas. When the forks lift goods, the hydraulic structure on the back of the fork carriage 9 bears the weight of the goods. When moving the fork carriage 9, the upper moving block 5 and the lower moving block 2 are slowly driven directly by the screw motor 19, which enhances the applicability of using the fork carriage 9.

[0045] 3. When using the forklift with fork carriage 9 for forking operations, driver misjudgment may cause a misalignment between the forks and the holes left by the palletizer, resulting in the forks being unable to directly lift the goods. Forcing the goods to lift may cause them to collapse due to their weight. In this case, the driver can operate the operating system on the instrument panel to control the lead screw motor 19, which is connected to the forklift's control system via a connecting cable, and control the electric lead screw 17 to rotate, thereby driving the upper moving block 5 and the lower moving block 2 to move straight along the direction of the electric lead screw 17. The movement of the movable block will cause the slide bar 4 and the movable block 6 sleeved on the surface of the slide bar 4 to move together. The fork carriage 9 fixedly connected to the front of the movable block 6 will also be moved, so that the fork carriage 9 can be adjusted laterally. In this way, if the driver misjudges and causes an error between the forks and the palletizer, the position of the fork carriage 9 can be adjusted directly through the screw motor 19. After the goods are lifted, the goods can be secured by attaching ropes or stabilizing devices to the surface of the lifted goods to ensure that the goods will not collapse due to left and right movement, without having to move the forklift again, which is more convenient.

[0046] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A telescopic fork carriage (9) of a fork lift truck, characterized in that The device includes a fork carriage (9), with an L-shaped fork (20) on the front side. A hydraulic cylinder (24) is fixedly connected to the back side of the L-shaped fork (20). A second hydraulic pump (25) is fixedly connected to the top of the hydraulic cylinder (24). A connection port (26) is fixedly connected to the top of the hydraulic cylinder (24). A protective plate (27) is fixedly connected to the top of the hydraulic cylinder (24). A fork extension plate (21) is fixedly connected to the front side of the L-shaped fork (20). A telescopic fork (23) is provided at the output end of the hydraulic cylinder (24). An extension fork (22) is fixedly connected to the front side of the telescopic fork (23).

2. A telescopic fork carriage (9) according to claim 1, characterized in that The back of the fork carriage (9) is provided with a mast body (1). The mast body (1) is provided with an upper moving block (5) and a lower moving block (2). The upper moving block (5) and the lower moving block (2) are provided with a sliding groove (15). A slider (16) is slidably connected inside the sliding groove (15). The bottom of the slider (16) is fixedly connected to the mast body (1). An electric lead screw (17) is threadedly connected inside the upper moving block (5) and the lower moving block (2). The two ends of the electric lead screw (17) are threadedly connected to a connecting plate (18). A lead screw motor (19) is fixedly connected to the side of the connecting plate (18).

3. A telescopic fork carriage (9) according to claim 1, characterized in that The fork carriage (9) is internally fixedly connected to a fork rod (10), and an L-shaped fork (20) is fixedly connected to the surface of the fork rod (10). A fork fixing plate (11) is fixedly connected to the bottom of the fork rod (10).

4. A telescopic fork carriage (9) according to claim 2, characterized in that A top plate (3) is fixedly connected to the top of the gantry body (1), a rear plate (14) is fixedly connected to the back of the gantry body (1), and a guide fork (12) is fixedly connected to the front of the gantry body (1). A groove is provided on the top of the guide fork (12), and a fork wheel (13) is connected to the groove through a rotating shaft.

5. A telescopic fork carriage (9) according to claim 2, characterized in that The bottom of the upper moving block (5) and the top of the lower moving block (2) are fixedly connected to a slide rod (4), and a movable block (6) is movably connected to the surface of the slide rod (4).

6. A telescopic fork carriage (9) according to claim 4, characterized in that The electric lead screw (17) runs through the interior of the rear plate (14), and a connecting plate (18) is fixedly connected to the side of the rear plate (14).

7. A telescopic fork carriage (9) according to claim 5, characterized in that The movable block (6) has a placement groove (8) on its back side, and a first hydraulic pump (7) is fixedly connected inside the placement groove (8).

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