Split type lifting guide rail and stacking machine

Abstract

The utility model relates to the technical field of stereoscopic warehouse storage equipment, in particular to a split type lifting guide rail and a stacking machine. The split type lifting guide rail comprises a transverse plate connected with a stand column and a vertical plate connected with the transverse plate through a bolt; the vertical plate is perpendicular to the transverse plate, and a concave-convex limiting structure is formed at the connecting position of the vertical plate and the transverse plate to limit transverse swing of the vertical plate relative to the transverse plate. The length directions of the transverse plate, the vertical plate and the concave-convex limiting structure are consistent with the length direction of the stand column. The transverse plate and the vertical plate are detachably connected through the bolts, and the concave-convex limiting structure is formed at the connecting position of the transverse plate and the vertical plate, so that an operator can independently replace the transverse plate or the vertical plate under the condition that the connecting strength of the transverse plate and the vertical plate is guaranteed, and the replacement cost is further reduced; and secondly, the adjacent sections of lifting guide rails in the stacking machine coincide in the length direction through the concave-convex positioning structures, and the straightness of the whole lifting guide rails is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stereoscopic warehouse storage equipment, in particular to a split-type lifting guide rail and a stacker. Background Art

[0002] A stacker is a special crane that uses a fork or a string as a picking device to pick up, transport and stack unit goods in a high-bay warehouse. It is a loading or unloading conveyor in a high-bay warehouse.

[0003] The published Chinese patent CN212799495U discloses a stacker lifting structure, which includes a stacker frame with a cargo platform provided on the frame. The frame includes two vertically arranged columns and an upper crossbeam fixed horizontally between the two columns. A lifting guide rail is vertically fixed on any of the columns. A pulley group is provided on the cargo platform, and the pulley group includes a first pulley and a second pulley. By distributing the first pulley on both sides of the lifting guide rail horizontally to the upper crossbeam and clamping the lifting guide rail, and pressing the second pulley against a side wall of the lifting guide rail close to the cargo platform, the cargo platform is not prone to shaking after being limited by the pulley group, thereby improving the stability of the cargo platform.

[0004] like Figure 1 As shown, the pulley block repeatedly moves up and down along the side of the lifting guide rail. The lifting guide rail is a T-shaped guide rail welded together by a horizontal plate and a vertical plate. When the surface of the lifting guide rail in contact with the pulley block is worn or cracks appear under the action of stress concentration, the operator needs to remove the lifting guide rail and replace the entire lifting guide rail, which has a high replacement cost. In the stacker field, when the lifting height of the goods is too high, multiple sections of lifting guide rails need to be fixed on the column at the same time to increase the maximum lifting height of the goods. When one section of the lifting guide rail needs to be replaced, not only is the replacement cost high, but the straightness between adjacent sections cannot be guaranteed, which affects the guiding effect of the overall lifting guide rail on the pulley block. Utility Model Content

[0005] In order to solve the problem of how to reduce the replacement cost of the lifting guide rail while ensuring the structural stability of the lifting guide rail and ensure the straightness of the moving track of the pulley block, the utility model provides a split lifting guide rail and a stacker. The specific technical solution is as follows:

[0006] A split lifting guide rail is connected to the column of a stacker. The lifting guide rail includes a horizontal plate connected to the column and a vertical plate connected perpendicularly to the horizontal plate. The vertical plate and the horizontal plate are bolted together, and the connection position of the vertical plate and the horizontal plate forms a concave-convex limiting structure to limit the lateral swing of the vertical plate relative to the horizontal plate. The length direction of the horizontal plate, the vertical plate and the concave-convex limiting structure is consistent with the length direction of the column.

[0007] Furthermore, the horizontal plate forms a groove limiting structure, the vertical plate forms a convex limiting structure, and the convex limiting structure is embedded in the groove limiting structure to form a concave-convex limiting structure; the side where the convex limiting structure and the groove limiting structure overlap is the anti-rotation side D, and the groove limiting structure applies an anti-rotation torque E to the convex limiting structure through the anti-rotation side D to limit the swing of the convex limiting structure relative to the groove limiting structure along the width direction.

[0008] Preferably, a limiting groove is formed on the side of the horizontal plate close to the vertical plate, the depth of the limiting groove is L1, and the width of the limiting groove, that is, the horizontal length, is W1, and the side of the horizontal plate close to the vertical plate forms a groove limiting structure with the limiting groove; a limiting protrusion is formed on the side of the vertical plate close to the horizontal plate, the protruding length of the limiting protrusion is L2, the width of the limiting protrusion is W2, the thickness of the vertical plate is W, and the side of the vertical plate close to the horizontal plate forms a protrusion limiting structure with the limiting protrusion; wherein, W>W1, W>W2, W1≥W2, L1≥L2 or W>W1, W>W2, W1=W2, L1<L2.

[0009] Preferably, the width W1 of the limiting groove and the width W2 of the limiting protrusion are: W1=W2; preferably, the depth L1 of the limiting groove and the protruding length L2 of the limiting protrusion are: L1=L2.

[0010] Preferably, the vertical plate forms bolt holes for fixing connecting bolts, the horizontal plate forms through holes for passing connecting bolts, and the axis of the connecting bolts is perpendicular to the horizontal plate; the horizontal plate forms through holes for passing mounting bolts, and the axis of the mounting bolts is perpendicular to the horizontal plate, and the mounting bolts fix the horizontal plate to the column.

[0011] Preferably, the mounting bolts are symmetrically arranged about the vertical center plane F of the vertical plate, and the axes of the connecting bolts are located on the vertical center plane F.

[0012] A stacker includes a lifting guide rail. Two ends of several vertical plates are respectively formed with splicing grooves and splicing protrusions. The splicing grooves and the splicing protrusions form a concave-convex positioning structure to improve the straightness of the vertical plates of adjacent sections.

[0013] Preferably, the depth L3 of the splicing groove, the width W3 of the splicing groove, the protrusion length L4 of the splicing protrusion, and the width W4 of the splicing protrusion satisfy the following conditions: L3=L4; W3≥W4.

[0014] Preferably, the width W3 of the splicing groove and the width W4 of the splicing protrusion are: W3=W4.

[0015] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0016] The utility model forms a detachable connection between the horizontal plate and the vertical plate by bolts, and forms a concave-convex limiting structure at the connection position between the two, so that the operator can replace the horizontal plate or the vertical plate separately while ensuring the connection strength between the two, thereby reducing the replacement cost; secondly, the lifting guide rails of adjacent sections in the stacker are arranged through the concave-convex positioning structure, so that the length directions of the lifting guide rails of adjacent sections overlap, thereby improving the straightness of the overall lifting guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial structural diagram of an existing stacker lifting structure;

[0018] Figure 2 This is a structural diagram of the first embodiment of the present utility model;

[0019] Figure 3 for Figure 2 sectional view of

[0020] Figure 4 for Figure 3 A magnified view of the structure at point A;

[0021] Figure 5 for Figure 2 A magnified view of the structure at point B;

[0022] Figure 6 for Figure 2 Enlarged view of the structure at point C in .

[0023] In the figure: 10, horizontal plate; 11, mounting bolt; 12, limiting groove; 13, horizontal plate body; 20, vertical plate; 21, connecting bolt; 22, limiting protrusion; 23, vertical plate body; 24, splicing groove; 25, splicing protrusion. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0026] like Figure 2 and Figure 3 As shown, the length direction of the lifting guide rail is the Z axis, the width direction is the X axis, and the height direction is the Y axis.

[0027] Example 1

[0028] like Figure 2 and Figure 3 As shown, the first embodiment of the present invention is a split lifting guide rail, which is connected to the column of the stacker. The lifting guide rail includes a horizontal plate 10 connected to the column and a vertical plate 20 vertically connected to the horizontal plate 10; the vertical plate 20 is bolted to the horizontal plate 10, and the connection position of the vertical plate 20 and the horizontal plate 10 forms a concave-convex limiting structure to limit the lateral swing of the vertical plate 20 relative to the horizontal plate 10; the length direction of the horizontal plate 10, the vertical plate 20 and the concave-convex limiting structure are all consistent with the length direction of the column.

[0029] Specifically, the lifting guide rail is fixedly connected to the column via bolts, and the length direction of the two is consistent and is both Z-axis. The pulley group moves up and down along the side of the lifting guide rail, thereby raising and lowering the cargo platform. Secondly, the length direction of the horizontal plate 10 and the vertical plate 20 is both Z-axis. The horizontal plate 10 is fixedly connected to the column via bolts, and the vertical plate 20 is fixedly connected to the horizontal plate 10 via bolts, thereby ensuring that the positions of the column, horizontal plate 10 and vertical plate 20 are relatively fixed. The horizontal plate 10 and the column form a detachable connection. The horizontal plate 10 and the vertical plate 20 can be detached to form a split structure, allowing the operator to choose to replace the horizontal plate 10 or the vertical plate 20 separately after removing the lifting guide rail, thereby reducing the replacement cost of the lifting guide rail.

[0030] Secondly, a protrusion is formed on one side of the vertical plate 20 and embedded in the horizontal plate 10, or a protrusion is formed on one side of the horizontal plate 10 and embedded in the vertical plate 20, thereby forming a concave-convex limiting structure, so that the horizontal plate 10 can limit the X-axis direction of the vertical plate 20, and cooperate with the bolts to limit the Y-axis direction of the vertical plate 20, so that the vertical plate 20 is fixed relative to the horizontal plate 10, ensuring the structural stability of the lifting guide rail, so that replacing the vertical plate 20 and the horizontal plate 10 separately will not affect the verticality between the two, thereby ensuring that the pulley axes at different positions of the pulley group are parallel to the side surfaces of the lifting guide rails they contact, avoiding a reduction in the contact area between the radial side surfaces of the pulley and the side surfaces of the lifting guide rails, resulting in increased side pressure on the lifting guide rails, easy damage to its side surfaces, and increased replacement frequency and cost.

[0031] like Figure 4As shown, the horizontal plate 10 forms a groove limiting structure, and the vertical plate 20 forms a convex limiting structure, and the convex limiting structure is embedded in the groove limiting structure to form a concave-convex limiting structure; the side where the convex limiting structure and the groove limiting structure overlap is the anti-rotation side D, and the groove limiting structure applies an anti-rotation torque E to the convex limiting structure through the anti-rotation side D to limit the convex limiting structure from swinging relative to the groove limiting structure along the width direction.

[0032] Specifically, the cross-section of the groove limiting structure along the XY axis is concave, and the cross-section of the protruding limiting structure along the XY axis is convex. The protruding limiting structure can be placed in the groove limiting structure and the two are relatively fixed. The overlapping side is the anti-rotation side D, which can be the side where the bottom of the protrusion and the top of the groove overlap, or the side where the bottom and side of the protrusion overlap with the top and side of the groove, or the side where only the side of the protrusion overlaps with the side of the groove. The three embodiments of the anti-rotation side D can limit the rotation of the protruding limiting structure relative to the groove limiting structure. movement; when the raised limiting structure is fixedly connected to the groove limiting structure, and the raised limiting structure has a tendency to rotate relative to the groove limiting structure under the action of external force, the groove limiting structure applies a rotation-blocking tendency opposite to the rotation trend to the raised limiting structure through the rotation-limiting side surface D, thereby keeping the raised limiting structure and the groove limiting structure fixed, ensuring the structural stability between the horizontal plate 10 and the vertical plate 20, and the bolts connecting the two do not need to bear a large force, thereby increasing the service life of the bolts and improving the accuracy of the trajectory of the pulley group relative to the lifting guide rail.

[0033] Furthermore, a limiting groove 12 is formed on the side of the horizontal plate 10 close to the vertical plate 20, the depth of the limiting groove 12 is L1, and the width of the limiting groove 12, that is, the horizontal length, is W1. The side of the horizontal plate 10 close to the vertical plate 20 forms a groove limiting structure with the limiting groove 12; the side of the vertical plate 20 close to the horizontal plate 10 forms a limiting protrusion 22, the protruding length of the limiting protrusion 22 is L2, the width of the limiting protrusion 22 is W2, the thickness of the vertical plate 20 is W, and the side of the vertical plate 20 close to the horizontal plate 10 forms a protrusion limiting structure with the limiting protrusion 22; wherein, W>W1, W>W2, W1≥W2, L1≥L2 or W>W1, W>W2, W1=W2, L1<L2.

[0034] Specifically, the top of the horizontal plate 10 forms an inward-concave limiting groove 12, which is a groove limiting structure, and the bottom of the vertical plate 20 forms a downward-convex limiting protrusion 22, which is a protrusion limiting structure. Among them, the depth of the limiting groove 12 refers to the Y axis, its width refers to the X axis, the protruding length of the limiting protrusion 22 refers to the Y axis, its width refers to the X axis, and the thickness of the vertical plate 20 refers to the X axis; secondly, the vertical plate 20 includes a vertical plate body 23 and a limiting protrusion 22 formed at the bottom of the vertical plate body 23, and the horizontal plate 10 includes a horizontal plate body 13 and a limiting groove 12 formed at the top of the horizontal plate body 13. W>W1 and W>W2 represent that the width of the vertical plate body 23 is greater than the width of the limiting protrusion 22, so that it cannot be embedded in the limiting groove 1 2, so that the bottom surface of the vertical plate body 23 coincides with the top surface of the horizontal plate body 13 to form a partial or complete rotation-limiting side surface D. The rotation-limiting side surfaces D are symmetrically distributed on both sides of the center plane of the vertical plate 20 along the Y axis, so that the top surface of the horizontal plate body 13 can apply a pair of anti-rotation moments E in opposite directions to the bottom surface of the vertical plate body 23. At the same time, the anti-rotation moment E on the same side and the rotational moment of the vertical plate body 23 are offset to zero, so that the vertical plate 20 can be limited to rotate relative to the horizontal plate 10, thereby ensuring the vertical relationship between the vertical plate 20 and the horizontal plate 10.

[0035] Secondly, W1≥W2 means that the left and right side surfaces of the limiting protrusion 22 may overlap with the left and right inner side surfaces of the limiting groove 12, or the two may not overlap; when the two overlap, a partial anti-rotation side surface D is formed, and the left and right inner side surfaces of the limiting groove 12 can prevent the limiting protrusion 22 from rotating relative to it. When the two do not overlap, the limiting groove 12 can accommodate the limiting protrusion 22 so that the bottom surface of the vertical plate body 23 and the top surface of the horizontal plate body 13 overlap, thereby maintaining the anti-rotation effect on the vertical plate 20.

[0036] Secondly, L1≥L2 means that when the bottom surface of the limiting protrusion 22 coincides with the bottom surface of the limiting groove 12, the bottom surface of the vertical plate body 23 coincides with the top surface of the horizontal plate body 13; when the two coincide, the limiting groove 12 can accommodate the limiting protrusion 22 so that the bottom surface of the vertical plate body 23 coincides with the top surface of the horizontal plate body 13, and with W>W1 and W>W2, the horizontal plate 10 maintains the anti-rotation effect on the vertical plate 20; when L1<L2, the bottom surface of the limiting protrusion 22 coincides with the bottom surface of the limiting groove 12, the vertical plate body The bottom surface of 23 does not coincide with the top surface of the horizontal plate body 13. When W1>W2, the anti-rotation side surface D disappears, and the horizontal plate 10 cannot maintain the fixing effect on the vertical plate 20, causing the vertical plate 20 to swing relative to the horizontal plate 10, affecting the contact area between the pulley block and the lifting guide rail, and increasing the stress concentration of the pulley block on it. When W1=W2, the left and right side surfaces of the limiting protrusion 22 coincide with the left and right inner side surfaces of the limiting groove 12 to form symmetrically distributed anti-rotation side surfaces D, so that the horizontal plate 10 and the vertical plate 20 remain relatively fixed.

[0037] like Figure 3As shown, the vertical plate 20 forms a bolt hole for fixing the connecting bolt 21, the horizontal plate 10 forms a through hole for passing the connecting bolt 21, and the axis of the connecting bolt 21 is perpendicular to the horizontal plate 10; the horizontal plate 10 forms a through hole for passing the mounting bolt 11, and the axis of the mounting bolt 11 is perpendicular to the horizontal plate 10, and the mounting bolt 11 fixes the horizontal plate 10 to the column.

[0038] Specifically, the axis of the connecting bolt 21 is the Y-axis, which cooperates with the bolt hole formed on the bottom surface of the vertical plate 20 and the through hole formed on the bottom surface of the limiting groove 12. The threaded end of the connecting bolt 21 forms a bolt connection with the vertical plate 20, and the other end of the connecting bolt 21 is limited by the bottom surface of the horizontal plate 10, so that the horizontal plate 10 and the vertical plate 20 are bolted together, and the connecting bolt 21 uses the bottom surface of the horizontal plate 10 as the support surface to apply a downward force along the Y-axis to the vertical plate 20 to ensure that the horizontal plate 10 and the vertical plate 20 are fixed along the Y-axis direction, and combined with the anti-rotation side D to fix the vertical plate 20 in the left and right directions, so that the horizontal plate 10 and the vertical plate 20 are relatively fixed.

[0039] Secondly, the cross plate body 13 forms a through hole that cooperates with the mounting bolt 11, and the threaded end of the mounting bolt 11 forms a bolt connection with the side of the column. The other end of the mounting bolt 11 is limited by the top surface of the cross plate 10, so that the mounting bolt 11 uses the top surface of the cross plate 10 as the support surface, applies pressure to the column to keep it relatively fixed, and the bottom surface of the cross plate 10 coincides with the side of the column to further ensure the relative fixation between the two.

[0040] Furthermore, the mounting bolts 11 are symmetrically arranged about the vertical center plane F of the vertical plate 20 , and the axis of the connecting bolts 21 is located on the vertical center plane F.

[0041] Specifically, the vertical center plane F refers to the center plane of the vertical plate 20 along the Y-axis. The mounting bolts 11 and the connecting bolts 21 are symmetrically arranged about the vertical center plane F, so that both apply force evenly to the horizontal plate 10 or the vertical plate 20, avoiding different pressures on the overlapping surfaces between the horizontal plate 10 and the column, and between the horizontal plate 10 and the vertical plate 20.

[0042] Preferably, the width W1 of the limiting groove 12 and the width W2 of the limiting protrusion 22 are: W1=W2; the depth L1 of the limiting groove 12 and the protruding length L2 of the limiting protrusion 22 are: L1=L2, so that the anti-rotation side D is an L-shaped side, which is composed of the top surface of the horizontal plate body 13 and the inner side surface of the limiting groove 12.

[0043] Example 2

[0044] like Figure 2 、 Figure 5 and Figure 6 As shown, Figure 5 and Figure 6 Both represent the connection structure between the lifting guide rails of adjacent sections. Figure 5It means that the adjacent sections of lifting guide rails have been spliced ​​together. Figure 6 It indicates that the lifting guide rails of adjacent sections have not been completed splicing. The second embodiment is a stacker, which includes several sections of lifting guide rails such as those in the first embodiment. Splicing grooves 24 and splicing protrusions 25 are formed at both ends of the vertical plates 20 of the several sections respectively. The splicing grooves 24 and the splicing protrusions 25 form a concave-convex positioning structure to improve the straightness of the vertical plates 20 of the adjacent sections.

[0045] Specifically, a splicing protrusion 25 is formed at the top end of the vertical plate 20 along the Z axis, and a splicing groove 24 is formed at the bottom end along the Z axis. When the operator completes the assembly of the horizontal plate 10 and the vertical plate 20, the assembled lifting guide rail is matched with the lifting guide rail that has been fixedly installed on the column. The splicing protrusion 25 is embedded in the splicing groove 24 to form a concave-convex positioning structure. The splicing groove 24 can provide a positioning reference for the splicing protrusion 25. Then the operator aligns the end faces of the horizontal plates 10 of the two lifting guide rails, and fixes the lifting guide rails to the column by installing bolts 11, thereby improving the straightness of the vertical plates 20 of adjacent sections, and the pulley group is tangent to the side of the vertical plate 20, thereby ensuring the straightness of the moving trajectory of the pulley group.

[0046] Furthermore, the depth L3 of the splicing groove 24 , the width W3 of the splicing groove 24 , the protrusion length L4 of the splicing protrusion 25 , and the width W4 of the splicing protrusion 25 satisfy the following conditions: L3=L4; W3≥W4.

[0047] Specifically, L3=L4 makes the splicing groove 24 and the splicing protrusion 25 coincide on both side surfaces along the X-axis, and the center lines of the splicing protrusion 25 and the splicing groove 24 along the Z-axis coincide with the vertical plate 20, so that the splicing groove 24 can prevent the splicing protrusion 25 of the adjacent sections from moving along the X-axis direction, thereby ensuring that the center lines of the lifting guide rails of the adjacent sections coincide along the Z-axis, thereby improving their straightness.

[0048] When W3<W4, the splicing protrusion 25 cannot be embedded in the splicing groove 24, and the lifting guide rails of adjacent sections cannot form a concave-convex positioning structure.

[0049] Preferably, the width W3 of the splicing groove 24 and the width W4 of the splicing protrusion 25 are: W3=W4.

[0050] Specifically, the width direction of the splicing groove 24 and the width direction of the splicing protrusion 25 both refer to the X-axis direction. The same width of the two allows the splicing protrusion 25 to completely overlap with the splicing groove 24, further improving the limiting effect of the splicing groove 24 on the splicing protrusion 25, thereby improving the straightness of the lifting guide rails of adjacent sections.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0052] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. A split lifting guide rail, the lifting guide rail is connected to the column of the stacker, characterized in that: The lifting guide rail comprises a horizontal plate (10) connected to the column and a vertical plate (20) vertically connected to the horizontal plate (10); The vertical plate (20) and the horizontal plate (10) are connected by bolts, and a concave-convex limiting structure is formed at the connection position between the vertical plate (20) and the horizontal plate (10) to limit the horizontal swing of the vertical plate (20) relative to the horizontal plate (10); The length directions of the transverse plate (10), the vertical plate (20) and the concave-convex limiting structure are all consistent with the length direction of the upright column.

2. The lifting guide rail according to claim 1, characterized in that: The horizontal plate (10) forms a groove limiting structure, the vertical plate (20) forms a convex limiting structure, and the convex limiting structure is embedded in the groove limiting structure to form the concave-convex limiting structure; The side where the protrusion limiting structure overlaps with the groove limiting structure is the anti-rotation side D, and the groove limiting structure applies an anti-rotation torque E to the protrusion limiting structure through the anti-rotation side D to limit the protrusion limiting structure from swinging relative to the groove limiting structure in the width direction.

3. The lifting guide rail according to claim 2, characterized in that: A limiting groove (12) is formed on one side of the transverse plate (10) close to the vertical plate (20), the depth of the limiting groove (12) is L1, the width of the limiting groove (12), i.e., the horizontal length is W1, and the side of the transverse plate (10) close to the vertical plate (20) and the limiting groove (12) form the groove limiting structure; A limiting protrusion (22) is formed on one side of the vertical plate (20) close to the horizontal plate (10), the protruding length of the limiting protrusion (22) is L2, the width of the limiting protrusion (22) is W2, the thickness of the vertical plate (20) is W, and the side of the vertical plate (20) close to the horizontal plate (10) and the limiting protrusion (22) form the protrusion limiting structure; Among them, W>W1, W>W2, W1≥W2, L1≥L2 or W>W1, W>W2, W1=W2, L1<L2.

4. The lifting guide rail according to claim 3, characterized in that: The width W1 of the limiting groove (12) and the width W2 of the limiting protrusion (22) are: W1=W2; The depth L1 of the limiting groove (12) and the protruding length L2 of the limiting protrusion (22) are: L1=L2.

5. The lifting guide rail according to claim 1, characterized in that: The vertical plate (20) is formed with a bolt hole for fixing a connecting bolt (21), and the horizontal plate (10) is formed with a through hole for passing the connecting bolt (21), and the axis of the connecting bolt (21) is perpendicular to the horizontal plate (10); The transverse plate (10) is formed with a through hole for passing a mounting bolt (11), the axis of the mounting bolt (11) is perpendicular to the transverse plate (10), and the mounting bolt (11) fixes the transverse plate (10) to the column.

6. The lifting guide rail according to claim 5, characterized in that: The mounting bolts (11) are symmetrically arranged with respect to the vertical center plane F of the vertical plate (20), and the axis of the connecting bolts (21) is located on the vertical center plane F.

7. A stacker, characterized in that: The lifting guide rail comprises several sections as described in any one of claims 1 to 6, wherein the two ends of the vertical plates (20) of the several sections are respectively formed with splicing grooves (24) and splicing protrusions (25), and the splicing grooves (24) and the splicing protrusions (25) form a concave-convex positioning structure to improve the straightness of the vertical plates (20) of adjacent sections.

8. The stacker according to claim 7, characterized in that: The depth L3 of the splicing groove (24), the width W3 of the splicing groove (24), the protrusion length L4 of the splicing protrusion (25), and the width W4 of the splicing protrusion (25) satisfy the following conditions: L3=L4; W3≥W4.

9. The stacker according to claim 8, characterized in that: The width W3 of the splicing groove (24) and the width W4 of the splicing protrusion (25) are: W3=W4.

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