Distance adjusting pallet fork structure and forklift
By designing the distance adjustment fork structure, the center of gravity of the goods is stable and the field of view is unobstructed, which solves the problems of the traditional distance adjustment forks with large weight and blind spots in the field of view, and improves the operating efficiency and safety of the forklift.
Patent Information
- Application Number
- CN202422298908.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The weight of the traditional distance adjusting fork is large, causing the center of gravity of the cargo to move forward, increasing the load loss rate, and the plug-in structure is easy to block the driver's field of vision, and there is a blind spot in the field of vision.
A distance adjustment fork structure is designed, including a fork frame, a left fork and a right fork. Driven by sliding devices and oil cylinders, the one-way or opposite movement of the left fork and the right fork is realized. Combined with the inner carriage and the vehicle body, the lifting and width adjustment of the fork is realized, ensuring the stability of the center of gravity of the goods and reducing the field of view.
It reduces the load loss rate of goods, reduces blind spots in the field of vision, and improves the passability and operation safety of forklifts.
Smart Images
Figure CN223118068U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forklifts, in particular to a fork distance adjusting structure and a forklift. Background Art
[0002] A forklift is a material handling device with diverse functions, flexibility and high efficiency. Usually, a forklift is standardly equipped with a pair of forks, mainly used to fork and hold the goods placed on a pallet, and then through the lifting, tilting and other actions of the forklift itself to achieve the stacking and loading / unloading operations of the goods. In this process, due to the various structural forms of the pallets bearing the goods, the positions of the forks placed on the forklift fork frame need to be frequently adjusted.
[0003] However, as an attachment, the traditional fork distance adjusting device is often an external attachment and has a relatively large self-weight. The size ET (unloaded distance) after being externally attached often increases a lot, resulting in the center of gravity of the goods moving forward, and the load reduction of the forklift is relatively serious; moreover, the structure of the external fork distance adjusting device is often not concise enough, easily blocking the driver's view and having many blind spots. Summary of the Utility Model
[0004] The main technical problem to be solved by the utility model is to provide a fork distance adjusting structure and a forklift, which can ensure the stability of the center of gravity of the goods on the forks, reduce the unloaded rate, and at the same time reduce the blind spots.
[0005] One technical solution adopted by the utility model is: a fork distance adjusting structure, including a fork frame, a left fork and a right fork. The left fork and the right fork are respectively slidably installed on the fork frame. On one side surface of the fork frame, a distance adjusting device for the left fork and the right fork is installed. The fork frame includes upper and lower cross beams and left and right vertical beams. Upper assembly parts are provided at the upper ends of the left vertical beam and the right vertical beam for installing the upper cross beam, and lower assembly parts are provided at the lower ends of the left vertical beam and the right vertical beam for installing the lower cross beam. At least one set of sliding devices is also installed on the upper cross beam or the lower cross beam. The left fork and the right fork are cooperatively installed with the sliding devices.
[0006] The distance adjusting device has opposite extending ends, and the opposite extending ends are respectively fixedly connected to the left fork and the right fork, so that the left fork and the right fork perform unidirectional, opposite or separating movements.
[0007] The sliding device includes two T-shaped slide rails arranged in parallel up and down. The left fork and the right fork are respectively slidably installed on the slide rails arranged in parallel up and down.
[0008] The left fork and the right fork have the same structure, both including an extension arm and a fork body. The extension arm is provided with an inwardly concave chute and is sleeved on the slide rail, and the fork body is fixedly installed on the outer side of the extension arm.
[0009] The extension arm includes an outer shell and an inner sleeve. The outer shell is provided with an inwardly concave T-shaped chute, the inner sleeve is embedded in the T-shaped chute, the inner sleeve is provided with an inwardly concave groove body, and the opening of the groove body corresponds to the opening of the T-shaped chute.
[0010] The outer shell and the inner sleeve are fixedly connected through a limiting component.
[0011] The limiting component includes a bayonet provided on the inner sleeve. A limiting top plate is installed in the bayonet. The limiting top plate is provided with a threaded hole. When the inner sleeve is embedded in the outer shell, the outer shell is provided with a mounting hole corresponding to the limiting top plate. The outer shell and the inner sleeve are fixedly connected by installing a limiting member in the mounting hole and the through hole.
[0012] The distance adjustment device includes a leftward oil cylinder and a rightward oil cylinder. The extending ends of the leftward oil cylinder and the rightward oil cylinder are arranged towards each other and are fixedly connected to the fork body. The left vertical beam and the right vertical beam are provided with misaligned mounting seats, and the tails of the leftward oil cylinder and the rightward oil cylinder are fixedly connected to the mounting seats.
[0013] It further includes an inner carriage, which is at least composed of left and right side plates and upper, middle and lower inner cross beams. The upper and lower inner cross beams are respectively fixedly connected to the upper and lower cross beams.
[0014] A forklift includes a vehicle body, including the above-mentioned distance-adjustable fork structure. The inner carriage is connected to the vehicle body and enables the distance-adjustable fork to move up and down relative to the vehicle body.
[0015] The beneficial effects of a distance-adjustable fork frame structure and a forklift of the present utility model are as follows: The fork frame and the inner carriage are fixedly connected, with strong rigidity and no blind area with blocked vision in the middle of the frame; the tails of the leftward oil cylinder and the rightward oil cylinder are respectively connected to the mounting seats of the left vertical beam and the right vertical beam, so that the positions of the leftward oil cylinder and the rightward oil cylinder are staggered up and down, thereby achieving the maximum extension of the leftward oil cylinder and the rightward oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a three-dimensional structural schematic diagram of a distance-adjustable fork frame structure of the present utility model;
[0017] Figure 2 is a front view of a distance-adjustable fork frame structure of the present utility model;
[0018] Figure 3 is a rear view of a distance-adjustable fork frame structure of the present utility model;
[0019] Figure 4 is an exploded view of a distance-adjustable fork frame structure of the present utility model;
[0020] Figure 5 is a schematic structural view of a fork frame of a distance-adjustable fork frame structure of the present utility model;
[0021] Figure 6 is a schematic structural view of an inner carriage of a distance-adjustable fork frame structure of the present utility model;
[0022] Figure 7 is Figure 3 an enlarged view in
[0023] Figure 8 is Figure 4 an enlarged view in Specific Embodiments
[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the present utility model shown in the drawings and described according to the drawings are merely exemplary, and the present utility model is not limited to these embodiments.
[0025] Here, it should also be noted that in order to avoid obscuring the present utility model with unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.
[0026] In addition, in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0027] Please refer to Figures 1-3 , embodiments of the present utility model:
[0028] A fork distance adjustment structure includes a fork frame 1, a left fork 2, and a right fork 3. The left fork 2 and the right fork 3 are respectively slidably mounted on the fork frame 1. A distance adjustment device 4 is mounted on one side surface of the fork frame 1. The distance adjustment device 4 has opposite extending ends, and the opposite extending ends are respectively fixedly connected to the left fork 2 and the right fork 3, enabling the left fork 2 and the right fork 3 to move unidirectionally, towards each other, or away from each other.
[0029] The fork frame 1 includes upper and lower crossbeams and left and right vertical beams. Upper assembly parts are provided at the upper ends of the left vertical beam 11 and the right vertical beam 12 for mounting the upper crossbeam 13. Lower assembly parts are provided at the lower ends of the left vertical beam 11 and the right vertical beam 12 for mounting the lower crossbeam 14. At least one set of sliding devices 5 is also mounted on the upper crossbeam 13 or the lower crossbeam 14. The left fork 2 and the right fork 3 are cooperatively mounted with the sliding devices 5. In the specific implementation of this application, one set of sliding devices is mounted on both the upper and lower crossbeams, and the left fork and the right fork are respectively and simultaneously connected to the sliding devices on the same side, making the left fork and the right fork more stable when expanding outwards or contracting inwards. More specifically, the upper assembly part and the lower assembly part have the same shape, and the end faces of the upper assembly part and the lower assembly part are lower than the end faces of the left and right vertical beams.
[0030] The sliding device 5 includes two slide rails 51 arranged in parallel up and down. The left fork 2 and the right fork 3 are respectively slidably mounted on the slide rails 51 arranged in parallel up and down. In the specific implementation, the length of the slide rails is the same as the length of the upper and lower crossbeams, maximizing the expansion length of the left fork and the right fork. More specifically, the left fork is slidably mounted on the lower slide rail, and the right fork is slidably mounted on the upper slide rail.
[0031] Refer to Figures 1-8 , the cross-section of the slide rail 51 is T-shaped.
[0032] The left fork 2 and the right fork 3 have the same structure and both include an extension arm 21 and a fork body 22. The extension arm 21 is provided with an inwardly concave chute and is sleeved on the slide rail 51. The fork body 22 is fixedly mounted on the outer side surface of the extension arm 21.
[0033] The extension arm 21 includes a housing 211 and an inner sleeve 212. The housing 211 is provided with an inwardly concave T-shaped chute, and the inner sleeve 212 is embedded in the T-shaped chute. The inner sleeve 212 is provided with an inwardly concave groove, and the opening of the groove corresponds to the opening of the T-shaped chute.
[0034] The housing 211 and the inner sleeve 212 are fixedly connected through a limit assembly 23.
[0035] The limiting component 23 includes a bayonet 231 provided on the inner sleeve 212. A limiting top plate 232 is installed in the bayonet 231. The limiting top plate 232 is provided with a threaded hole. When the inner sleeve 212 is embedded in the outer shell 211, the outer shell 211 is provided with a mounting hole corresponding to the limiting top plate 232. The outer shell 211 and the inner sleeve 212 are fixedly connected by installing a limiting member 233 in the mounting hole. In specific implementation, the limiting member can be a set screw. Threads are provided at the through hole to lock with the set screw, so as to lock and fix the outer shell 211 and the inner sleeve 212. However, the structure of the limiting component is not limited to the form of a bayonet, a limiting top plate and a set screw. As long as the structure that fixes the outer shell and the inner sleeve together is within the protection scope of this application. More specifically, a stop block 234 is provided at the opening edge of the bayonet 231 for clamping the limiting top plate 232. At the same time, the limiting top plate 232 is adjacent to the slide rail, and the set screw can adjust the distance between the limiting top plate and the slide rail to ensure the smooth sliding of the extension arm on the slide rail.
[0036] Specifically, an oil injection port 24 is also provided on the outer shell 211 and the inner sleeve 212. The oil injection port 24 is installed with a limiting stud 241, a grease nipple 242 and a rubber plug 243.
[0037] The distance adjustment device 4 includes a leftward oil cylinder 41 and a rightward oil cylinder 42. The extending ends of the leftward oil cylinder 41 and the rightward oil cylinder 42 are arranged facing each other and fixedly connected to the fork body. Mounting seats 43 are provided on the left vertical beam and the right vertical beam with a dislocation. The tails of the leftward oil cylinder 41 and the rightward oil cylinder 42 are fixedly connected to the mounting seats.
[0038] An inner carriage 6 is further included. The inner carriage is at least composed of left and right side plates and upper, middle and lower inner cross beams. The upper and lower inner cross beams are respectively fixedly connected to the upper and lower cross beams. In the specific implementation of this application, the upper and middle inner cross beams of the inner carriage are respectively fixedly connected to the upper and lower cross beams. More specifically, the upper and middle inner cross beams are connected and fixed to the upper and lower cross beams by bolts. Of course, the connection and fixing method of the upper and middle inner cross beams to the upper and lower cross beams is not limited to being fixed by bolts, and can also be fixed by welding. In the specific implementation of this application, the upper and lower cross beams of the fork frame and the upper and middle inner cross beams of the inner carriage can be replaced with each other to save the structure of the two beams.
[0039] The overall structure of the distance-adjustable fork of this application forms a frame structure, and it is a rigid mechanism with a relatively thin thickness and upper and lower symmetry, making it have strong rigidity. There is no blind area with visual field obstruction in the middle of the frame. The leftward oil cylinder or the rightward oil cylinder can drive the left fork or the right fork to move unidirectionally, or can also drive the left fork and the right fork to move towards or away from each other at the same time.
[0040] A forklift, including a vehicle body, includes the above-mentioned fork distance adjustment structure. The inner carriage is connected to the vehicle body and enables the fork distance adjustment forks to move up and down relative to the vehicle body. At the same time, the distance adjustment device has opposite extending ends, which can adjust the width of the forks according to the difference of the goods to match the requirements of the goods, ensure the stability of the center of gravity of the goods on the forks, and reduce the load loss rate. Only the left and right forks are adjusted through the distance adjustment device on the fork frame of this application. When the distance is adjusted to the minimum, the width dimension of the fork frame itself can be reduced at the same time, reducing the blind area of vision, increasing the vision and the passing performance of the vehicle.
[0041] In addition, it should be noted that in this specification, "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.
[0042] It should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A fork structure with adjustable distance, characterized in that, It includes a fork frame, a left fork and a right fork. The left fork and the right fork are respectively slidably mounted on the fork frame. On one side surface of the fork frame, a distance adjustment device for the left fork and the right fork is mounted. The fork frame includes upper and lower cross beams and left and right vertical beams. At the upper ends of the left vertical beam and the right vertical beam, upper assembly parts are provided for mounting the upper cross beam. At the lower ends of the left vertical beam and the right vertical beam, lower assembly parts are provided for mounting the lower cross beam. At least one set of sliding devices is also mounted on the upper cross beam or the lower cross beam. The left fork and the right fork are cooperatively mounted with the sliding devices.
2. The adjustable fork structure according to claim 1, characterized in that, The distance adjustment device has opposite extending ends. The opposite extending ends are respectively fixedly connected to the left fork and the right fork, so that the left fork and the right fork perform unidirectional, opposite or separating movements.
3. The adjustable fork structure according to claim 2, characterized in that The sliding device includes two T-shaped slide rails arranged in parallel up and down. The left fork and the right fork are respectively slidably mounted on the slide rails arranged in parallel up and down.
4. A fork structure with adjustable distance according to claim 3, characterized in that, The left fork and the right fork have the same structure and both include an extending arm and a fork body. The extending arm is provided with an inwardly concave chute and is sleeved on the slide rail. The fork body is fixedly mounted on the outer side surface of the extending arm.
5. The adjustable fork structure according to claim 4, wherein, The extending arm includes a housing and an inner sleeve. The housing is provided with an inwardly concave T-shaped chute. The inner sleeve is embedded in the T-shaped chute. The inner sleeve is provided with an inwardly concave groove body. The opening of the groove body corresponds to the opening of the T-shaped chute.
6. The adjustable fork structure according to claim 5, characterized in that, The housing and the inner sleeve are fixedly connected through a limiting component.
7. The adjustable fork structure according to claim 6, characterized in that, The limiting component includes a bayonet provided on the inner sleeve. A limiting top plate is mounted in the bayonet. The limiting top plate is provided with a threaded hole. When the inner sleeve is embedded in the housing, an installation hole is provided on the housing corresponding to the limiting top plate. A limiting member is installed in the installation hole to fixedly connect the housing and the inner sleeve.
8. A distance-adjustable forklift fork structure according to claim 4, characterized in that, The distance adjustment device includes a leftward oil cylinder and a rightward oil cylinder. The extending ends of the leftward oil cylinder and the rightward oil cylinder are arranged oppositely and are fixedly connected to the fork body. Misaligned mounting seats are provided on the left vertical beam and the right vertical beam. The tails of the leftward oil cylinder and the rightward oil cylinder are fixedly connected to the mounting seats.
9. The adjustable fork structure according to claim 1, characterized in that It further includes an inner sliding frame which is at least composed of left and right side plates and upper, middle and lower inner cross beams. The upper and lower inner cross beams are respectively fixedly connected to the upper and lower cross beams.
10. A forklift, comprising a vehicle body, characterized in that, It includes the distance adjustment fork structure according to any one of claims 1-9. The inner sliding frame is connected to the vehicle body and enables the distance adjustment fork to perform a lifting movement relative to the vehicle body.