A telescopic fork with smooth guidance

Abstract

The utility model discloses a telescopic fork with smooth guidance. The telescopic fork includes a lower fork member, a middle fork member, an upper fork member, a driving member, a linking member and a conducting member. The linking member connects the lower fork member and the middle fork member and the middle fork member and the upper fork member. The driving member drives the middle fork member to extend and retract relative to the lower fork member. The driving member drives the upper fork member to extend and retract relative to the middle fork member. The conducting member is arranged between the middle fork member and the lower fork member and between the upper fork member and the middle fork member. The conducting member includes a guide wheel and a guide block arranged along the extension direction; wherein the guide block is a needle roller guide block. Through the needle roller guide block, the friction coefficient of the middle fork member and the upper fork member when sliding is small, so that the transmission is smooth and the extension and retraction are smooth, thereby improving the accuracy and efficiency of the telescopic fork.

Description

Technical Field

[0001] The utility model relates to the technical field of loading and unloading machinery, in particular to a telescopic fork with smooth guidance. Background Art

[0002] In recent years, with the continuous expansion of the logistics industry, logistics management methods and technologies are constantly improving and enhancing. Shortening logistics time, saving logistics costs, improving logistics efficiency, and rationalizing logistics organization are the common characteristics of logistics development. At present, it has a modern logistics industry infrastructure, an important part of the modern logistics system, and is widely used in all walks of life. Forks are the core equipment of the entire automated logistics system and are widely used in warehousing, papermaking, packaging, printing, tobacco, home appliances, wine, textiles, docks, railways, automobile manufacturing, steel smelting, chemicals and construction.

[0003] An existing telescopic fork generally includes a lower fork, a middle fork, an upper fork, a driving member and a linking member. The linking member links the lower fork and the middle fork, and the middle fork and the upper fork. The driving member drives the middle fork to telescope relative to the lower fork, and drives the upper fork to telescope relative to the middle plug. This chain drive method easily leads to unsmooth transmission, so that the extension and retraction are jerky, affecting its accuracy and efficiency.

[0004] Therefore, it is necessary to develop a telescopic fork with smooth guidance to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a telescopic fork which is convenient for horizontal detection during installation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic fork with smooth guidance, the telescopic fork comprising a lower fork member, a middle fork member, an upper fork member, a driving member, a connecting member and a conductive member, the connecting member connecting the lower fork member and the middle fork member and the middle fork member and the upper fork member, the driving member drives the middle fork member to extend and retract relative to the lower fork member, the driving member drives the upper fork member to extend and retract relative to the middle fork member, the conductive member is arranged between the middle fork member and the lower fork member and between the upper fork member and the middle fork member, the conductive member comprises a guide wheel and a guide block arranged along the extension and retraction direction; wherein, the guide block is a roller needle type guide block.

[0007] In one embodiment, the guide block includes a block-shaped base and a roller needle rollingly mounted on the base.

[0008] In one of the embodiments, the base includes a receiving cavity for receiving the needle roller and a mounting hole for mounting the guide block to the lower fork member or the upper fork member.

[0009] In one embodiment, the needle roller includes a guide roller and a rotating shaft, and the guide roller partially protrudes out of the receiving cavity.

[0010] In one embodiment, the two end edges of the base body are respectively rounded guide portions.

[0011] In one of the embodiments, the guide block includes a receiving cavity for receiving the needle roller and two mounting holes located on both sides of the receiving cavity.

[0012] In one of the embodiments, a receiving cavity for receiving the needle roller is respectively provided at both ends of the guide block, and one or two mounting holes are provided in the middle of the two receiving cavities.

[0013] In one embodiment, the receiving cavity is in the form of a slot with one side, two sides or three sides open, and the mounting hole is in the form of a two-section through hole with different diameters.

[0014] In one embodiment, the middle fork body includes an inner linear guide and an outer linear guide, the guide wheel and the guide block installed on the lower fork member cooperate with the inner linear guide, and the guide wheel and the guide block installed on the upper fork member cooperate with the outer linear guide.

[0015] In one of the embodiments, the telescopic fork further includes an identification member for identifying a position of the link member, a mounting plate for fixing the lower fork member, and a level bubble disposed on the mounting plate.

[0016] Compared with the prior art, the beneficial effect of the utility model is that the telescopic fork passes through the needle roller guide block, and the friction coefficient of the middle fork part and the upper fork part when sliding is small, so that the transmission is smooth and the extension and retraction are smooth, thereby improving the accuracy and efficiency of the telescopic fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a telescopic fork with smooth guidance according to the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of a three-dimensional structure from another angle;

[0020] Figure 3 for Figure 1A schematic diagram of a three-dimensional structure from another angle;

[0021] Figure 4 for Figure 1 A partial enlarged schematic diagram of circle A in FIG.

[0022] Figure 5 for Figure 2 A partial enlarged schematic diagram of circle B in FIG.

[0023] Figure 6 It is a schematic diagram of another embodiment of a guide block of a telescopic fork with smooth guidance according to the utility model;

[0024] Figure 7 for Figure 2 A partial enlarged schematic diagram of circle C in FIG.

[0025] Figure 8 for Figure 1 A partial enlarged schematic diagram of circle D in FIG. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Please refer to Figures 1 to 5 The utility model discloses a telescopic fork 100 with smooth guidance. The telescopic fork 100 includes a lower fork member 1, a middle fork member 2, an upper fork member 3, a driving member 4, a linking member 5 and a conducting member 6. The linking member 5 connects the lower fork member 1 and the middle fork member 2 and the middle fork member 2 and the upper fork member 3. The driving member 4 drives the middle fork member 2 to extend and retract relative to the lower fork member 1, and the driving member 4 drives the upper fork member 3 to extend and retract relative to the middle fork member 2. The conducting member 6 is arranged between the middle fork member 2 and the lower fork member 1 and between the upper fork member 3 and the middle fork member 2, and the conducting member 6 includes a guide wheel 61 and a guide block 62 arranged along the extension direction. Among them, the guide block 62 is a needle roller guide block. Through the needle roller guide block, the friction coefficient of the middle fork member 2 and the upper fork member 3 is small when sliding, so that the transmission is smooth, the extension and retraction are smooth, and the accuracy and efficiency of the telescopic fork 100 are improved. The needle roller guide block can adopt new energy materials that are resistant to high and low temperatures, and has excellent performance in clean rooms or V-shaped forks. In addition, the needle roller guide block has high compatibility and is conducive to standardized operations.

[0028] Please continue reading Figures 1 to 5The guide block 62 includes a block-shaped base 621 and a needle roller 622 rollingly mounted on the base 621. The base 621 includes a receiving cavity 6211 for receiving the needle roller 622 and a mounting hole 6212 for mounting the guide block 62 on the lower fork member 1 or the upper fork member 3. The needle roller 622 includes a guide roller 6221 and a rotating shaft 6222, wherein the guide roller 6222 partially protrudes out of the receiving cavity 6211. The edges at both ends of the base 621 are chamfered to achieve smooth conduction. The middle fork body 2 is in the shape of a door frame as a whole, and includes an inner linear guide rail 21 and an outer linear guide rail 22, wherein the inner linear guide rail 21 is arranged on both sides of the door frame, and the outer linear guide rail 22 is arranged on both sides of the door frame. The guide wheel 61 and the guide block 62 installed on the lower fork member 1 cooperate with the inner linear guide rail 21 to realize the sliding of the middle fork body 2 relative to the lower fork member 1; the guide wheel 61 and the guide block 62 installed on the upper fork member 3 cooperate with the outer linear guide rail 22 to realize the cooperation of the upper fork member 3 relative to the middle fork body 2. The guide block 62 includes a receiving cavity 6211 for receiving a needle roller 622 and two mounting holes 6212 located on both sides of the receiving cavity 6211. The receiving cavity 6211 is a groove type with one side or both sides open, and the mounting hole 6212 is a two-section through hole with different diameters.

[0029] For other embodiments, please refer to Figure 6 , a receiving cavity 6311 for receiving the needle roller 632 is respectively provided at both ends of the guide block 63, and two mounting holes 6312 are provided in the middle of the two receiving cavities 6311, which can also meet the guiding requirements and realize smooth telescopic movement. The receiving cavity is a three-side open groove type, which is convenient for installing the needle roller 632. Of course, one or three mounting holes 6312 can also be provided in the middle.

[0030] Please refer to Figure 2 and Figure 7 The telescopic fork 100 also includes an identification member 7 for identifying the position of the link member 5. The link member 5 includes a chain 51 installed between the lower fork member 1, the middle fork member 2 and the lower fork member 3 and a disc spring 52 for adjusting the chain 51. The identification member 7 includes a card body 71 installed next to the disc spring 52, a fastener 72 for installing the card body 71 to the lower fork member 1, and an identification member 73 provided on the card body 71. The identification member 73 includes a disc spring icon 731 and a scale 732, and the disc spring icon 731 and the scale 732 are arranged side by side. The scale 732 distinguishes between an over-tight position, a suitable position and an over-loose position by different colors and texts. The position information of the disc spring 52 is indicated by the identification member 73, and the tightness of the disc spring 52 is clearly understood in real time, so that the disc spring 52 can be adjusted in time to quickly and accurately debug or replace the chain 51, realize daily maintenance verification and timely replacement of the chain 51 when it is in an over-tight state, and improve work efficiency.

[0031] Please refer to Figure 1 and Figure 8The telescopic fork 100 also includes a mounting plate 8 for fixing the lower fork member 1 and a level bubble 9 arranged on the mounting plate 8. Preferably, the level bubble 9 is a universal level bubble. When the telescopic fork 100 is installed on a stacker (not shown) or other fixed platform through the mounting plate 8, it is possible to clearly monitor whether the level meets the working requirements of the telescopic fork 100, which is convenient for the horizontal detection operation at the installation site; and if it is found that the installation level does not meet the requirements, it can be corrected in advance, thereby eliminating work safety hazards, ensuring the stability of telescoping, and improving work efficiency. The lower fork member 1 is fixedly installed by two front and rear mounting plates 8, and each mounting plate 8 is installed with a level bubble 9, and the installation positions can be the same or diagonally set to better detect the level.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A telescopic fork with smooth guidance, characterized in that: The telescopic fork comprises a lower fork member, a middle fork member, an upper fork member, a driving member, a connecting member and a transmitting member, wherein the connecting member connects the lower fork member and the middle fork member and the middle fork member and the upper fork member, the driving member drives the middle fork member to be telescopic relative to the lower fork member, the driving member drives the upper fork member to be telescopic relative to the middle fork member, the transmitting member is arranged between the middle fork member and the lower fork member and between the upper fork member and the middle fork member, and the transmitting member comprises a guide wheel and a guide block arranged along the telescopic direction; wherein the guide block is a roller needle type guide block.

2. The smoothly guided telescopic fork according to claim 1, characterized in that: The guide block comprises a block-shaped base body and a roller needle rollingly mounted on the base body.

3. The smoothly guided telescopic fork according to claim 2, characterized in that: The base comprises a receiving cavity for receiving the needle roller and a mounting hole for mounting the guide block on the lower fork member or the upper fork member.

4. The smoothly guided telescopic fork according to claim 3, characterized in that: The needle roller comprises a guide roller and a rotating shaft, and a portion of the guide roller protrudes out of the receiving cavity.

5. The smoothly guided telescopic fork according to claim 3, characterized in that: The two end edges of the base body are respectively rounded guide parts.

6. The smoothly guided telescopic fork according to claim 4, characterized in that: The guide block comprises a receiving cavity for receiving the needle roller and two mounting holes located on both sides of the receiving cavity.

7. The smoothly guided telescopic fork according to claim 4, characterized in that: A receiving cavity for receiving the roller needle is respectively arranged at both ends of the guide block, and one or two mounting holes are arranged in the middle of the two receiving cavities.

8. The smoothly guided telescopic fork according to claim 4, characterized in that: The receiving cavity is in the form of a slot with one side, two sides or three sides open, and the mounting hole is in the form of two-section through holes with different diameters.

9. The smoothly guided telescopic fork according to any one of claims 1 to 8, characterized in that: The middle fork member includes an inner linear guide and an outer linear guide. The guide wheel and the guide block installed on the lower fork member cooperate with the inner linear guide, and the guide wheel and the guide block installed on the upper fork member cooperate with the outer linear guide.

10. The smoothly guided telescopic fork according to claim 1, characterized in that: The telescopic fork also includes an identification member for identifying the position of the link member, a mounting plate for fixing the lower fork member, and a level bubble arranged on the mounting plate.

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