A bidirectional fork

Abstract

This invention relates to the field of warehousing equipment technology, and particularly to a bidirectional forklift, comprising a base, a first telescopic plate, a second telescopic plate, a first guide assembly, a second guide assembly, an I-beam guide rail, and a drive mechanism. The first telescopic plate is slidably connected to the base, and the second telescopic plate is slidably connected to the first telescopic plate. The first guide assembly is disposed on the base, and the second guide assembly is disposed on the second telescopic plate. The I-beam guide rail is fixed to the first telescopic plate, and each side of the I-beam guide rail has a first guide groove that contacts the first guide assembly and a second guide groove that contacts the second guide assembly. The contact surface between the first guide groove and the first guide assembly is the first guide surface, and the contact surface between the second guide groove and the second guide assembly is the second guide surface. The first guide surface and / or the second guide surface gradually rise from the middle to both sides. The bidirectional forklift of this invention will not sag, has more accurate positioning, and ensures smooth transport of goods.

Description

Technical Field

[0001] This invention relates to the field of warehousing equipment technology, and in particular to a bidirectional forklift. Background Technology

[0002] In existing technologies, the loading and unloading of goods on multi-layer racks generally uses lifting forks. When picking up materials, it is necessary to move horizontally in both directions to remove the goods, such as the fork structure disclosed in patent number CN207313041U. However, the forks are usually used to the extreme position when picking up goods. Sometimes the goods are heavy, and the extended end of the forks is prone to sagging. This is especially true for pallets that carry goods. In situations where the positioning of the pallet is required to be precise, sagging can easily lead to inaccurate positioning. Summary of the Invention

[0003] To address the problem of fork sagging caused by heavy loads in existing technologies, this invention provides a two-way fork that solves the sagging problem caused by heavy loads.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A two-way forklift, comprising:

[0006] Base;

[0007] The first telescopic plate is slidably connected to the base.

[0008] The second telescopic plate is slidably connected to the first telescopic plate;

[0009] A first guide component is disposed on the base;

[0010] The second guide assembly is disposed on the second telescopic plate;

[0011] The I-beam guide rail is fixed to the first telescopic plate, and the two sides of the I-beam guide rail have a first guide groove that contacts the first guide component and a second guide groove that contacts the second guide component, respectively. The contact surface between the first guide groove and the first guide component is the first guide surface, and the contact surface between the second guide groove and the second guide component is the second guide surface. The first guide surface and / or the second guide surface gradually rise from the middle to both sides.

[0012] A drive mechanism drives the first telescopic plate and the second telescopic plate to extend and retract.

[0013] Furthermore, the first guide surface is provided on both the upper and lower sides of the first guide groove, and the second guide surface is provided on both the upper and lower sides of the second guide groove. That is, the guide component is in contact with both the upper and lower sides of the guide groove, resulting in greater stability.

[0014] Furthermore, both the first guide surface and the second guide surface are arc-shaped surfaces.

[0015] Furthermore, the drive mechanism includes a motor mounted on the base, a drive gear fixed to the extended end of the motor, a first rack meshing with the drive gear fixed on the first telescopic plate, a plurality of transmission gears rotatably mounted on the first telescopic plate, a second rack meshing with the transmission gear fixed on the base, and a third rack meshing with the transmission gear fixed on the second telescopic plate.

[0016] Furthermore, the upper surface of the second telescopic plate is provided with a positioning pin. The positioning pin can cooperate with the goods to be transported to prevent the goods from slipping and ensure transportation stability.

[0017] Furthermore, the second telescopic plate is provided with a first detection device for detecting whether there is material above it, and the end of the second telescopic plate is provided with a second detection device for detecting whether there is material in its extension direction.

[0018] Furthermore, the second telescopic plate is equipped with a temperature detection device. This device can test the temperature of the goods, thereby facilitating automated control of the warehouse.

[0019] Furthermore, a barcode scanner is installed on the base. The barcode scanner scans and stores the information of the goods, facilitating digital logistics.

[0020] Furthermore, both the first guide assembly and the second guide assembly include a guide block and / or a guide wheel.

[0021] Furthermore, a limit block is fixed to the first telescopic plate, and limit plates are provided at both ends of the base to block the limit block. A third detection device is also provided on the base to detect whether the limit block is at the zero point position. The limit block and limit plates limit the extreme position of the first telescopic plate, and the third detection device ensures the positional accuracy of the first telescopic plate.

[0022] Beneficial effects:

[0023] (1) The first guide surface and / or the second guide surface gradually rise from the middle to both sides. In this way, when the bidirectional forks extend to one end, the forks extend in a cantilever state and will tilt slightly upwards. Since the goods are relatively heavy, they will slightly deform the forks, offsetting the height of the tilted forks. After offsetting, the forks will appear straight overall. On the one hand, the cargo pallet is closer to horizontal, which makes the positioning pin positioning more accurate. On the other hand, it ensures the transportation of goods and prevents the forks from sagging severely or even falling off.

[0024] (2) Since both the first guide surface and the second guide surface are arc-shaped, the extended ends of the first telescopic plate and the second telescopic plate are both raised upwards, thus achieving the effect of double raising. In this way, compared with the case where only one of the first telescopic plate and the second telescopic plate is raised, the radius of the first guide surface and the second guide surface with double raising can be set as large as possible. On the one hand, it is convenient to realize telescopic movement and reduce jamming. On the other hand, it is convenient to process the I-beam guide rail.

[0025] (3) Under normal circumstances, there is a certain gap between the guide groove and the guide assembly. When the first telescopic plate or the second telescopic plate extends to the limit position, in order to adapt to the arc-shaped guide trajectory, the gap between the guide groove and the guide assembly will gradually decrease. At this time, the shaking between the first telescopic plate or the second telescopic plate and the base will decrease, thereby further ensuring the stability of transportation.

[0026] (4) The forks of the present invention adopt a double rack structure, which has a large load capacity and high precision;

[0027] (5) The forks are equipped with detection devices to detect whether there is material in front or above. A barcode scanner can be set to scan the information of the goods, and a temperature detection device can be set to detect the temperature of the goods. It has strong functionality. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 The three-dimensional bidirectional fork of the present invention Figure 1 ;

[0030] Figure 2 The three-dimensional bidirectional fork of the present invention Figure 2 ;

[0031] Figure 3 The three-dimensional bidirectional fork of the present invention Figure 3 ;

[0032] Figure 4 The three-dimensional bidirectional fork of the present invention Figure 4 ;

[0033] Figure 5 This is a three-dimensional structural diagram of an I-beam guide rail.

[0034] Figure 6 This is a schematic diagram of the side structure of the I-beam guide rail;

[0035] Figure 7This is a schematic diagram illustrating the working principle of the first and second telescopic plates in their extended positions.

[0036] Among them, 1. base, 2. first telescopic plate, 3. second telescopic plate, 4. I-beam guide rail, 4-1. first guide groove, 4-11. first guide surface, 4-2. second guide groove, 4-21. second guide surface, 5. motor, 6. drive gear, 7. first rack, 8. transmission gear, 9. second rack, 10. third rack, 11. positioning pin, 12. first detection device, 13. second detection device, 14. barcode scanning device, 15. guide block, 16. guide wheel, 17. limit block, 18. limit plate, 19. third detection device. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0042] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0043] like Figures 1-5This invention relates to a bidirectional forklift, comprising a base 1, a first telescopic plate 2, a second telescopic plate 3, a first guide assembly, a second guide assembly, an I-beam guide rail 4, and a drive mechanism. The first telescopic plate 2 is slidably connected to the base 1, and the second telescopic plate 3 is slidably connected to the first telescopic plate 2. The first guide assembly is disposed on the base 1, and the second guide assembly is disposed on the second telescopic plate 3. The I-beam guide rail 4 is fixed on the first telescopic plate 2, and the I-beam guide rail 4 has a first guide groove 4-1 contacting the first guide assembly and a second guide groove 4-2 contacting the second guide assembly on both sides. The contact surface between the first guide groove 4-1 and the first guide assembly is a first guide surface 4-11, and the contact surface between the second guide groove 4-2 and the second guide assembly is a second guide surface 4-21. The first guide surface 4-11 and / or the second guide surface 4-21 gradually rise from the middle to both sides. Preferably, the first guide surface 4-11 and the second guide surface 4-21 gradually rise from the middle to both sides. The drive mechanism drives the first telescopic plate 2 and the second telescopic plate 3 to extend and retract.

[0044] The first guide groove 4-1 has a first guide surface 4-11 on both the upper and lower sides, and the second guide groove 4-2 has a second guide surface 4-21 on both the upper and lower sides.

[0045] Both the first guide surface 4-11 and the second guide surface 4-21 are curved surfaces. The curvature of the guide surfaces can be calculated based on the weight of the cargo, material properties, and the forces acting upon them. Figure 6 The first guide surface 4-11 includes two arc surfaces, the upper arc surface with radius R1 and the lower arc surface with radius R2. The second guide surface 4-21 is symmetrically arranged with the first guide surface 4-11. Specifically, the entire I-beam guide rail 4 can be designed as an arc, or the body of the I-beam guide rail 4 can be straight, and the trajectories of the first guide groove and the second guide groove can be arc-shaped.

[0046] The drive mechanism includes a motor 5 mounted on a base 1, a drive gear 6 fixed to the extended end of the motor 5, a first rack 7 fixed on the first telescopic plate 2 that meshes with the drive gear 6, a plurality of transmission gears 8 rotatably mounted on the first telescopic plate 2, a second rack 9 fixed on the base 1 that meshes with the transmission gears 8, and a third rack 10 fixed on the second telescopic plate 3 that meshes with the transmission gears 8.

[0047] The upper surface of the second telescopic plate 3 is provided with a positioning pin 11. The positioning pin 11 can cooperate with the goods to be transported to prevent the goods from slipping and ensure the stability of transportation.

[0048] The second telescopic plate 3 is provided with a first detection device 12 for detecting whether there is material above it. The first detection device may be, but is not limited to, a limit switch. The end of the second telescopic plate 3 is provided with a second detection device 13 for detecting whether there is material in its extension direction. The second detection device 13 may be, but is not limited to, an infrared sensor switch.

[0049] The second telescopic plate 3 is equipped with a temperature detection device. A barcode scanner 14 is installed on the base 1. The barcode scanner 14 is located at both ends of the base 1; only one end of the barcode scanner 14 is shown in the figure. The goods can be scanned before the forks extend.

[0050] Both the first and second guiding components include guide blocks 15 and / or guide wheels 16. In this invention, both the first and second guiding components include guide blocks 15 and guide wheels 16, with guide blocks 15 and guide wheels 16 spaced apart. Guide blocks 15 ensure guiding accuracy, while guide wheels 16 reduce friction, thus better suited to the arc-shaped second guide surface 4-21 and first guide surface 411 of the I-beam guide rail 4 of this invention. Guide blocks 15 and guide wheels 16 are fixed at corresponding positions on the base 1 and the second telescopic plate 3.

[0051] Limiting blocks 17 are fixed on the first telescopic plate 2, and limiting plates 18 are provided at both ends of the base 1 to block the limiting blocks 17. The base 1 is also provided with a third detection device 19 to detect whether the limiting blocks 17 are in the zero position. The third detection device 19 can be a position switch or the like.

[0052] Working principle:

[0053] The base 1 of the bidirectional fork of the present invention can be installed on the lifting mechanism, thereby realizing the loading and unloading of goods on multi-layer shelves. The fork of the present invention realizes two-stage extension and retraction, that is, it adopts a first extension plate 2 and a second extension plate 3. The first extension plate 2 and the second extension plate 3 extend and retract synchronously. When the first extension plate 2 and the second extension plate 3 are extended to their limit positions, such as Figure 7 Since both the first guide surface 4-11 and the second guide surface 4-21 are arc-shaped, and the extended ends of the first telescopic plate 2 and the second telescopic plate 3 are both upturned, a double upturning effect is achieved. In this way, when the goods press on the forks, the downward deformation of the goods on the forks and the height of the upturned forks cancel each other out. After the cancellation, the forks look straight as a whole. On the one hand, the positioning is more accurate, and on the other hand, the delivery of goods is guaranteed, preventing the forks from sagging severely or even falling off.

[0054] When motor 5 rotates forward, the forks extend to one side; when motor 5 rotates in reverse, the forks extend to the other side. Therefore, bidirectional extension and retraction can be achieved.

[0055] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bidirectional fork comprising: include: Base (1); The first telescopic plate (2) is slidably connected to the base (1); The second telescopic plate (3) is slidably connected to the first telescopic plate (2); A first guide component is disposed on the base (1). The second guide assembly is disposed on the second telescopic plate (3). The I-beam guide rail (4) is fixed on the first telescopic plate (2), and the I-beam guide rail (4) has a first guide groove (4-1) that contacts the first guide component and a second guide groove (4-2) that contacts the second guide component on both sides. The contact surface between the first guide groove (4-1) and the first guide component is the first guide surface (4-11), and the contact surface between the second guide groove (4-2) and the second guide component is the second guide surface (4-21). The first guide surface (4-11) and / or the second guide surface (4-21) gradually rise from the middle to both sides. The driving mechanism drives the first telescopic plate (2) and the second telescopic plate (3) to extend and retract.

2. A bidirectional fork as claimed in claim 1, characterized in that: The first guide groove (4-1) is provided with the first guide surface (4-11) on both the upper and lower sides, and the second guide groove (4-2) is provided with the second guide surface (4-21) on both the upper and lower sides.

3. A bidirectional forklift according to claim 1 or 2, characterized in that: Both the first guide surface (4-11) and the second guide surface (4-21) are arc-shaped surfaces.

4. A bidirectional forklift according to claim 1, characterized in that: The drive mechanism includes a motor (5) mounted on a base (1), a drive gear (6) fixed to the extended end of the motor (5), a first rack (7) meshing with the drive gear (6) fixed on the first telescopic plate (2), a plurality of transmission gears (8) rotatably mounted on the first telescopic plate (2), a second rack (9) meshing with the transmission gear (8) fixed on the base (1), and a third rack (10) meshing with the transmission gear (8) fixed on the second telescopic plate (3).

5. A bidirectional forklift according to claim 1, characterized in that: The upper end face of the second telescopic plate (3) is provided with a positioning pin (11).

6. A bidirectional forklift according to claim 1, characterized in that: The second telescopic plate (3) is provided with a first detection device (12) for detecting whether there is material above it, and the end of the second telescopic plate (3) is provided with a second detection device (13) for detecting whether there is material in its extension direction.

7. A bidirectional forklift according to claim 1, characterized in that: The second telescopic plate (3) is equipped with a temperature detection device.

8. A bidirectional forklift according to claim 1, characterized in that: A barcode scanning device (14) is installed on the base (1).

9. A bidirectional forklift according to claim 1, characterized in that: The first guide assembly and the second guide assembly both include a guide block (15) and / or a guide wheel (16).

10. A bidirectional forklift according to claim 1, characterized in that: The first telescopic plate (2) is fixed with a limiting block (17), and the base (1) is provided with limiting plates (18) at both ends for blocking the limiting block (17). The base (1) is also provided with a third detection device (19) for detecting whether the limiting block (17) is at the zero point position.

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