Eccentric positioning structure of cargo carrying table hoisting mechanism

Abstract

The utility model discloses an eccentric positioning structure of a cargo carrying table hoisting mechanism. The eccentric positioning structure comprises at least one eccentric wheel set which is symmetrically arranged on a machine frame. Each eccentric wheel set comprises a base, a first guide wheel and a second guide wheel, wherein the first guide wheel and the second guide wheel are installed on the base and can abut against the two perpendicular side faces of the stand column. The first guide wheel and the second guide wheel each comprise an eccentric shaft rod installed on the base, and the eccentric shaft rods are sleeved with wheel bodies capable of abutting against the stand columns. Positioning structures in one-to-one correspondence with the eccentric shaft rods are arranged on the base, each positioning structure comprises a driving rod and a positioning plate, the positioning plates can move in the direction close to or away from the corresponding eccentric shaft rods under the action of the driving rods, and rotation stopping pieces capable of restraining the eccentric shaft rods from rotating are arranged on the sides, facing the corresponding eccentric shaft rods, of the positioning plates. According to the eccentric positioning structure, correction of the eccentric position can be achieved without disassembling and assembling parts, and efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stacking equipment, in particular to an eccentric positioning structure of a cargo platform lifting mechanism. Background Art

[0002] A stacker is a special crane that uses a fork to grab, transport, stack or store and retrieve goods from high-rise shelves. It is the core equipment of the entire automated warehouse. A stacker generally includes a column, a horizontal walking mechanism, a lifting mechanism, a cargo platform, a fork and an electrical control system. The lifting mechanism is used to drive the cargo platform to move up and down along the column. In order to avoid problems such as the cargo platform tilting when walking, an eccentric positioning structure is set on the walking mechanism to improve the walking accuracy of the cargo platform. However, the existing eccentric positioning structure is not reasonably designed. When adjusting the angle of the cargo platform, it is troublesome to disassemble and assemble parts, which is time-consuming and labor-intensive. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide an eccentric positioning structure of a cargo platform lifting mechanism, which can realize the correction of the eccentric position without disassembling parts, thereby greatly improving the efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: an eccentric positioning structure of a cargo platform lifting mechanism, comprising at least one set of eccentric wheel groups symmetrically arranged on a frame; each set of the eccentric wheel groups comprises a base and a first guide wheel and a second guide wheel installed on the base, and the first guide wheel and the second guide wheel can abut on two vertical side surfaces of a column;

[0005] The first guide wheel and the second guide wheel both include an eccentric shaft mounted on the base, and the eccentric shaft is provided with a wheel body that can abut against the column; the base is provided with a positioning structure arranged one-to-one in correspondence with the eccentric shaft, and the positioning structure includes a driving rod and a positioning plate, and the positioning plate can move toward or away from the corresponding eccentric shaft under the action of the driving rod, and the positioning plate is provided with a stopper on the side of the corresponding eccentric shaft that can inhibit the rotation of the eccentric shaft.

[0006] The beneficial effects of the eccentric positioning structure of the utility model are:

[0007] An eccentric shaft rod is arranged on the first guide wheel and the second guide wheel, and the rotation of the eccentric shaft rod can be utilized to drive the change of the wheel body position, thereby changing the matching position of the wheel body and the column, so as to facilitate the adjustment of the inclination angle of the cargo platform installed on the frame; then, the rotation angle of the eccentric shaft rod is locked by the positioning structure, so as to ensure the stability of the inclination angle of the cargo platform after adjustment, thereby ensuring the walking accuracy of the subsequent cargo platform.

[0008] In the positioning structure, the movement of the positioning plate driven by the driving rod can realize the rapid separation of the anti-rotation part and the eccentric shaft, so as to realize the rapid rotation of the eccentric shaft, and then realize the rapid adjustment of the tilt angle of the cargo platform by correcting the eccentric position of the wheel body.

[0009] Furthermore, the outer side wall of the eccentric shaft is provided with an annular sawtooth, and the stopper is a strip-shaped sawtooth that can mesh with the annular sawtooth. The meshing of the annular sawtooth and the strip-shaped sawtooth can inhibit the rotation of the eccentric shaft.

[0010] Furthermore, the positioning plate includes a plate body, a moving rod is integrally provided on one side of the plate body facing the base, and a slide groove is provided on the base for the moving rod to move. The movement of the moving rod in the slide groove can drive the movement of the plate body, thereby realizing the meshing or separation of the strip-shaped saw teeth and the ring-shaped saw teeth.

[0011] Furthermore, the driving rod is inserted into the sliding groove along a direction perpendicular to the moving rod and is connected to the moving rod.

[0012] Specifically, the moving rod is provided with a threaded hole, and the driving rod is threadedly inserted into the threaded hole. Through the threaded cooperation between the moving rod and the driving rod and the position limiting of the moving rod by the sliding groove, the rotational motion of the driving rod can be converted into the linear motion of the moving rod.

[0013] Furthermore, one end of the driving rod is provided with a hand-held end portion located outside the base, and the side wall of the hand-held end portion is provided with anti-slip grooves to facilitate manual rotation of the driving rod.

[0014] Furthermore, a stop ring abutting against the slide groove is provided on the side wall of the driving rod, and the stop ring is used to inhibit the linear movement of the driving rod in the slide groove.

[0015] Furthermore, the end of the driving rod away from the handheld end is provided with a cone head structure, and the bottom wall of the slide is provided with a limit groove matching the cone head structure. The cooperation between the cone head structure and the limit groove further limits the position of the driving rod in the slide.

[0016] Furthermore, the base is provided with a guide groove, and a guide rod capable of moving along the guide groove is provided on one side of the plate body facing the base. The movement of the plate body can be guided by the cooperation between the guide groove and the guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an eccentric positioning structure of an embodiment of the utility model installed on a frame;

[0018] Figure 2 This is a structural schematic diagram of the eccentric positioning structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the positioning plate of an embodiment of the utility model;

[0020] Figure 4 It is a partial structural schematic diagram of a base according to an embodiment of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the cooperation between the positioning plate and the base according to an embodiment of the utility model;

[0022] Figure 6 It is a cross-sectional schematic diagram of the cooperation between the driving rod and the sliding groove according to an embodiment of the utility model.

[0023] In the figure:

[0024] 1-frame; 2-base; 21-slide groove; 22-guide groove; 3-first guide wheel; 4-second guide wheel; 5-eccentric shaft; 51-annular serration; 6-wheel body; 7-driving rod; 71-stop ring; 72-hand-held end; 73-cone head structure; 8-positioning plate; 81-plate body; 811-strip serration; 82-moving rod; 821-threaded hole; 83-guide rod. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0026] Example

[0027] See attached Figure 1-2 As shown, an eccentric positioning structure of a cargo platform lifting mechanism of the utility model comprises at least one set of eccentric wheel groups symmetrically arranged on a frame 1. Each set of eccentric wheel groups comprises a base 2 and a first guide wheel 3 and a second guide wheel 4 mounted on the base 2, and the first guide wheel 3 and the second guide wheel 4 can abut on two vertical sides of a column. The first guide wheel 3 and the second guide wheel 4 both comprise an eccentric shaft 5 mounted on the base 2, and a wheel body 6 capable of abutting against the column is mounted on the eccentric shaft 5.

[0028] An eccentric shaft rod 5 is provided on the first guide wheel 3 and the second guide wheel 4, and the rotation of the eccentric shaft rod 5 can drive the change of the position of the wheel body 6, thereby changing the matching position of the wheel body 6 and the column, so as to facilitate the adjustment of the inclination angle of the cargo platform installed on the frame 1. It should be noted that the eccentric adjustment of the first guide wheel 3 and the second guide wheel 4 is a prior art (see CN219340575U), and will not be described in detail in this embodiment. The positioning structure will be described in detail below.

[0029] For details, see the attached Figure 2-4 As shown, a positioning structure corresponding to the eccentric shaft 5 is provided on the base 2, and the positioning structure includes a driving rod 7 and a positioning plate 8, wherein the positioning plate 8 can move toward or away from the corresponding eccentric shaft 5 under the action of the driving rod 7, and a rotation stopper that can inhibit the rotation of the eccentric shaft 5 is provided on the side of the positioning plate 8 facing the corresponding eccentric shaft 5. First, the positioning structure can be used to lock the rotation angle of the eccentric shaft 5 to ensure the stability of the tilt angle of the cargo platform after adjustment, and then ensure the walking accuracy of the subsequent cargo platform. In the positioning structure, the movement of the positioning plate 8 driven by the driving rod 7 can realize the rapid separation of the rotation stopper and the eccentric shaft 5, so as to realize the rapid unlocking of the rotation of the eccentric shaft 5, so as to facilitate the rapid adjustment of the tilt angle of the cargo platform.

[0030] In some embodiments, see Appendix Figure 3 As shown, the positioning plate 8 includes a plate body 81, and a moving rod 82 capable of moving along the base 2 is integrally provided on the side of the plate body 81 facing the base 2, and the moving rod 82 is connected to the driving rod 7 to move along the base 2 under the drive of the driving rod 7. Furthermore, in order to guide the moving direction of the moving rod 82, in some embodiments, a guide rod 83 capable of moving along the base 2 is further provided on the side of the plate body 81 facing the base 2, and the guide rod 83 is arranged parallel to the moving rod 82. It should be noted that in order to cooperate with the movement of the moving rod 82 and the guide rod 83, see the attached Figure 4 As shown, the base 2 is provided with a slide groove 21 and a guide groove 22 arranged along the moving direction of the moving rod 82, wherein the slide groove 21 is for the moving rod 82 to move, and the guide groove 22 is for the guide rod 83 to move. Further, a pair of guide rods 83 are provided, and are respectively located on both sides of the moving rod 82. Correspondingly, a pair of guide grooves 22 are also provided, and are respectively located on both sides of the slide groove 21.

[0031] See attached Figure 5 As shown, when the moving rod 82 moves along the slide groove 21 under the action of the driving rod 7, the stopper on the plate body 81 can move toward or away from the eccentric shaft 5, thereby locking or unlocking the rotation of the eccentric shaft 5. The moving direction of the moving rod 82 can be limited by the cooperation between the guide rod 83 and the guide groove 22, so that the moving rod 82 can only move linearly along the slide groove 21.

[0032] In some embodiments, see Appendix Figure 6 As shown, the driving rod 7 is inserted into the slide groove 21 in a direction perpendicular to the moving rod 82 and connected to the moving rod 82. Specifically, a threaded hole 821 is provided on the moving rod 82, and the driving rod 7 is threadedly inserted into the threaded hole 821. Through the threaded cooperation between the moving rod 82 and the driving rod 7 and the limiting of the moving rod 82 by the slide groove 21, the rotational motion of the driving rod 7 can be converted into the linear motion of the moving rod 82.

[0033] Furthermore, in order to suppress the linear movement of the driving rod 7 during the rotation process, in some embodiments, see the attached Figure 6 As shown, a stop ring 71 is provided on the side wall of the driving rod 7 to abut against the slide groove 21, and one end of the driving rod 71 is provided with a hand-held end 72 located outside the base 2. The position of the driving rod 7 in the slide groove 21 can be limited by the cooperation between the hand-held end 72 and the stop ring 71, thereby inhibiting the linear movement of the driving rod 7.

[0034] Furthermore, a cone head structure 73 is provided at one end of the driving rod 7 away from the handheld end 72, and a limiting groove matching the cone head structure 73 is provided on the bottom wall of the slide slot 21. The cooperation between the cone head structure 73 and the limiting groove further limits the position of the driving rod 7 in the slide slot 21.

[0035] In some embodiments, the side wall of the hand-held end 72 is provided with anti-slip grooves to facilitate manual rotation.

[0036] In some embodiments, see Appendix Figure 2-3 As shown, the stopper is arranged on the plate body 81, which includes a strip-shaped sawtooth 811. The outer side wall of the eccentric shaft 5 is provided with an annular sawtooth 51 that can mesh with the strip-shaped sawtooth 811. The engagement of the annular sawtooth 51 with the strip-shaped sawtooth 811 can inhibit the rotation of the eccentric shaft 5.

[0037] The working principle of the eccentric positioning structure of this embodiment is as follows (taking the eccentric adjustment of the first guide wheel 3 as an example):

[0038] Manually rotate the hand-held end 72 to rotate the driving rod 7 and drive the moving rod 82 to move away from the annular serrations 51, and the plate body 81 then moves and drives the strip serrations 811 to move until the strip serrations 811 are separated from the annular serrations 51 (the eccentric shaft 5 is in an unlocked state); rotate the eccentric shaft 5, and the wheel body 6 then rotates to the set position, and the eccentric adjustment is completed; rotate the hand-held end 72 in the opposite direction to rotate the driving rod 7 in the opposite direction, and drive the moving rod 82 to move toward the annular serrations 51, until the strip serrations 811 are re-engaged with the annular serrations 51, and the eccentric shaft 5 is now in a locked state.

[0039] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An eccentric positioning structure of a cargo platform lifting mechanism, comprising at least one set of eccentric wheel groups symmetrically arranged on a frame; each set of the eccentric wheel groups comprises a base and a first guide wheel and a second guide wheel mounted on the base, and the first guide wheel and the second guide wheel can abut on two vertical side surfaces of a column; characterized in that: The first guide wheel and the second guide wheel both include an eccentric shaft mounted on the base, and the eccentric shaft is provided with a wheel body that can abut against the column; the base is provided with a positioning structure arranged one-to-one in correspondence with the eccentric shaft, and the positioning structure includes a driving rod and a positioning plate, and the positioning plate can move toward or away from the corresponding eccentric shaft under the action of the driving rod, and the positioning plate is provided with a stopper on the side of the corresponding eccentric shaft that can inhibit the rotation of the eccentric shaft.

2. The eccentric positioning structure according to claim 1, characterized in that: The outer side wall of the eccentric shaft is provided with an annular sawtooth, and the anti-rotation member is a strip-shaped sawtooth that can mesh with the annular sawtooth.

3. The eccentric positioning structure according to claim 1, characterized in that: The positioning plate comprises a plate body, and a moving rod is integrally arranged on one side of the plate body facing the base; and a sliding groove for the moving rod to move is provided on the base.

4. The eccentric positioning structure according to claim 3, characterized in that: The driving rod is inserted into the sliding groove along a direction perpendicular to the moving rod and is connected to the moving rod.

5. The eccentric positioning structure according to claim 4, characterized in that: The moving rod is provided with a threaded hole, and the driving rod is threadedly inserted into the threaded hole.

6. The eccentric positioning structure according to claim 5, characterized in that: One end of the driving rod is provided with a hand-held end portion located outside the base, and a side wall of the hand-held end portion is provided with anti-slip grooves.

7. The eccentric positioning structure according to claim 5, characterized in that: A stop ring abutting against the slide groove is provided on the side wall of the driving rod, and the stop ring is used to inhibit the linear movement of the driving rod in the slide groove.

8. The eccentric positioning structure according to claim 6, characterized in that: A cone head structure is provided at one end of the driving rod away from the hand-held end, and a limiting groove matching the cone head structure is provided on the bottom wall of the sliding groove.

9. The eccentric positioning structure according to claim 3, characterized in that: The base is also provided with a guide groove, and a guide rod which can move along the guide groove is provided on one side of the plate body facing the base.

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