Splicing portal frame for track transfer robot and track transfer robot

Abstract

The embodiment of the utility model discloses a splicing portal frame for a track transfer robot and the track transfer robot. The splicing portal frame comprises stand column units and a splicing structure used for fixedly connecting the two ends, in butt joint, of the pair of stand column units. The splicing structure comprises a positioning column, a positioning hole and a connecting piece, the positioning column and the positioning hole are formed in the two butt-joint end faces of a pair of stand column units respectively, the positioning hole is used for allowing the positioning column to be inserted and installed, and then the two ends, in the first direction, of the connecting piece are fixedly installed at the two butt-joint ends of the pair of stand column units respectively. The splicing structure can fixedly connect the two butt-joint ends of the pair of stand column units, or fixedly connect the pair of stand column units in the length direction of the splicing structure, so that the height of the portal frame of the rail transfer robot is increased, and the technical problem that the operation height of the rail transfer robot is limited due to the fact that an existing portal frame is short is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a logistics technical field especially relates to a spliced portal frame for track carrying robot and track carrying robot. BACKGROUND

[0002] The track carrying robot is a carrying robot installed on the facade of a shelf unit and can walk horizontally along the shelf unit. Specifically, the facade of the shelf unit is provided with horizontal tracks at different heights. Then, a pair of portal frames of the track carrying robot can be installed on the horizontal tracks through horizontal walking wheels or the like, and a carrying mechanism of the track carrying robot is installed on the pair of portal frames in an up-down manner. In this way, the carrying mechanism can perform the warehousing and de-warehousing operation of the material box in any storage position of the shelf unit.

[0003] However, due to the limitations of processing and profiles, the length of the existing portal frame is usually short, which limits the operation height of the track carrying robot. SUMMARY

[0004] To solve at least one of the above technical problems, the embodiments of the present application provide a spliced portal frame for a track carrying robot and a track carrying robot. The spliced portal frame can fix and connect at least a pair of column units along the length direction through a splicing structure, thereby prolonging the height of the portal frame of the track carrying robot and solving the technical problem of limited operation height of the track carrying robot caused by the short length of the existing portal frame.

[0005] In a first aspect, the embodiments of the present application provide a spliced portal frame for a track carrying robot. The spliced portal frame includes a column unit extending in a first direction and a splicing structure for fixing and connecting the two ends of a pair of column units in abutment.

[0006] The surface of the column unit is provided with an inward recessed guide groove extending in the first direction.

[0007] The splicing structure includes a positioning column, a positioning hole for inserting the positioning column, and a connecting piece. The positioning column and the connecting piece extend in the first direction.

[0008] The positioning column and the positioning hole are arranged on the two end faces of the pair of column units in abutment, and the two ends of the connecting piece are fixedly installed on the two ends of the pair of column units in abutment in the first direction.

[0009] When the splicing structure fixes and connects the two ends of the pair of column units in abutment, the connecting piece avoids the guide grooves, so that the pair of guide grooves are spliced into a straight track for the up-down movement of the carrying mechanism of the track carrying robot.

[0010] In an embodiment, preferably, the connecting piece is L-shaped or U-shaped in cross section perpendicular to the first direction.

[0011] In an embodiment, preferably, in a plane perpendicular to the first direction, the cross section of the column unit comprises a connecting portion extending along a second direction perpendicular to the first direction, two ends of the connecting portion extending towards the same side with a pair of guide portions, so that the space between the pair of guide portions forms the concave guide groove.

[0012] In an embodiment, preferably, the connecting portion is provided with a support portion on the side away from the guide portion;

[0013] Wherein, the first outer surface of the support portion away from the connecting portion and the second outer surface of at least one of the guide portions are used for fixed installation of the connecting piece, so that the connecting piece avoids the guide groove.

[0014] In an embodiment, preferably, the first outer surface is provided with a first installation positioning groove extending along the first direction, which is used for positioning installation of the first screw fastening the connecting piece and the column unit; and / or,

[0015] The second outer surface is provided with a second installation positioning groove extending along the first direction, which is used for positioning installation of the second screw fastening the connecting piece and the column unit.

[0016] In an embodiment, preferably, the support portion is hollow.

[0017] In an embodiment, preferably, the column unit comprises a first column profile extending along the first direction;

[0018] Wherein, the positioning column and the positioning hole are arranged at the two end faces of the pair of first column profiles, and the connecting piece comprises a first connecting profile, two ends of the first connecting profile are fixed to the end portions of the pair of first column profiles.

[0019] In an embodiment, preferably, the column unit comprises a second column profile extending along the first direction and a connecting flange fixedly installed at the end face of the second column profile;

[0020] Wherein, the positioning column and the positioning hole are arranged at the two end faces of the pair of connecting flanges, and the connecting piece comprises a pair of second connecting profiles, the second connecting profiles are fixedly installed at the end portions of the pair of second column profiles and fixedly installed with the connecting flanges.

[0021] And the connecting piece further comprises a flange connecting screw for fixedly mounting the butt joint of the pair of connecting flanges.

[0022] In an embodiment, preferably, in a plane perpendicular to the first direction, the connecting flange is convexly arranged relative to the cross section of the second column profile;

[0023] The second connecting profile comprises a first mounting portion extending along the first direction, and a second mounting portion perpendicular to the first direction is arranged at the end of the first mounting portion towards the connecting flange, and the second mounting portion is used for abutting against the convex part of the connecting flange relative to the cross section of the second column profile.

[0024] And the flange connecting screw is used for fixedly mounting the butt joint of the pair of connecting flanges and the pair of second mounting portions.

[0025] In a second aspect, the embodiments of the present application provide a track carrying robot, which comprises a spliced gantry and a carrying mechanism installed on the spliced gantry in up and down directions, wherein the spliced gantry is the above-mentioned spliced gantry.

[0026] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0027] The embodiments of the present application provide a spliced gantry for a track carrying robot and a track carrying robot, the spliced gantry comprising a column unit and a splicing structure for fixedly connecting two ends of a pair of column units in butt joint, wherein the splicing structure comprises a positioning column, a positioning hole and a connecting piece, the positioning column and the positioning hole are arranged on two end faces of the pair of column units in butt joint, the positioning hole is used for inserting and mounting the positioning column, and then the connecting piece is fixedly mounted on two ends of the pair of column units in butt joint along a first direction, so that the splicing structure can fixedly connect the two ends of the pair of column units in butt joint, or in other words, fixedly connect the pair of column units along the length direction of the column units, thereby prolonging the height of the gantry of the track carrying robot, and solving the technical problem that the working height of the track carrying robot is limited due to the short length of the existing gantry.

[0028] And when the splicing structure of the present embodiment fixedly connects the two ends of the pair of column units in butt joint, the connecting piece of the splicing structure avoids the guiding groove recessed in the surface of the column unit, so that it can be understood that the pair of guiding grooves can be spliced into a straight line track for the up and down movement of the carrying mechanism of the track carrying robot. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 The structure schematic view of the spliced door frame in the embodiments of the present application.

[0031] Figure 2 The structure schematic view of the spliced door frame in the embodiments of the present application. Figure 1

[0032] Figure 3 The structure schematic view of the second column profile in the embodiments of the present application, wherein the end of the second column profile is provided with a connecting flange. Figure 3 The connecting flange in the connecting flange is provided with the positioning hole.

[0033] Figure 4 The structure schematic view of the second column profile in the embodiments of the present application, wherein the end of the second column profile is provided with a connecting flange. Figure 4 The connecting flange in the connecting flange is provided with the positioning column.

[0034] The column unit in the column unit comprises the second column profile and the connecting flange. Figures 1-4

[0035] The structure schematic view of a pair of the first column profiles in the embodiments of the present application. Figure 5

[0036] The structure schematic view of one of the first column profiles of the spliced door frame, wherein the end surface of the first column profile is provided with the positioning hole. Figure 6 Figure 5 The structure schematic view of another of the first column profiles of the spliced door frame, wherein the end surface of the first column profile is provided with the positioning column.

[0037] Figure 7 The column unit in the column unit comprises the first column profile. Figure 5 The reference signs in the drawings are as follows:

[0038] Figures 5-7 10-column unit,

[0039] 11-connecting part, 12-guiding part, 13-supporting part, 14-guiding groove,

[0040] 121-second outer surface, 122-second mounting positioning groove,

[0041]

[0042] 121-second outer surface, 122-second mounting positioning groove, ​​​​

[0043] 131 - first outer surface, 132 - first mounting positioning groove,

[0044] 15 - first upright profile, 16 - second upright profile, 17 - connecting flange,

[0045] 171 - flange connecting through hole,

[0046] 20 - splicing structure,

[0047] 21 - positioning column, 22 - positioning hole,

[0048] 231 - first connecting profile,

[0049] 232 - second connecting profile,

[0050] 2321 - first mounting portion, 2322 - second mounting portion,

[0051] 30 - flange connecting screw,

[0052] 40 - flange fixing screw,

[0053] 100 - carrying mechanism,

[0054] X - first direction, Y - second direction. DETAILED DESCRIPTION

[0055] In order to better understand the above technical solutions, the example embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and not all embodiments of the present application. It should be understood that the present application is not limited to the example embodiments described herein.

[0056] Please combine Figures 1-7 A splicing gantry for a rail carrying robot, the splicing gantry comprising an upright unit 10 extending along a first direction X and a splicing structure 20 for fixedly connecting two ends of a pair of upright units 10 in abutment.

[0057] Wherein, the surface of the upright unit 10 is provided with an inwardly recessed guide groove 14 extending along the first direction X; the splicing structure 20 comprises a positioning column 21, a positioning hole 22 for the positioning column 21 to be inserted, and a connecting piece, the positioning column 21 and the connecting piece extending along the first direction X.

[0058] Wherein, the positioning column 21 and the positioning hole 22 are separately provided on two end surfaces of the pair of upright units 10 in abutment, and the two ends of the connecting piece are fixedly mounted on the two ends of the pair of upright units 10 in abutment along the first direction X.

[0059] And, when the splicing structure 20 fixes and connects the two ends of the pair of column units 10 abutted, the connecting piece avoids the guide groove 14, so that the pair of guide grooves 14 are spliced into a straight line track for the up and down movement of the carrying mechanism 100 of the track carrying robot.

[0060] Overall, the splicing structure of the embodiment can fix and connect the two ends of the pair of column units abutted, forming a spliced column, so that the pair of spliced columns arranged in parallel can form a spliced gantry, thereby prolonging the length of the spliced gantry and the working height of the track carrying robot.

[0061] Of course, the spliced column can also be spliced by three or more column units along the length direction, and it can be understood that the end portions of the column units abutted are fixed and connected by the splicing structure.

[0062] Specifically, the splicing structure of the embodiment includes a positioning hole 22, a positioning column 21 and a connecting piece.

[0063] The positioning column and the positioning hole extend along the first direction, i.e., the length direction of the column unit, and are arranged on the two end faces of the pair of column units abutted; here, it can be understood that the positioning column or the positioning hole can be directly arranged on the end face of the column unit, or it can be understood that the positioning column or the positioning hole can also be arranged on the end face of the column unit through other structures (such as the connecting flange described below) fixed on the end face of the column unit.

[0064] Then, the positioning hole is used for inserting and mounting the positioning column, and it can be understood that the two ends of the pair of column units abutted can be positioned and inserted by the inserting and mounting of the positioning column and the positioning hole.

[0065] The connecting piece extends along the first direction, i.e., the length direction of the column unit, and the two ends of the connecting piece along the first direction are fixed and mounted on the two ends of the pair of column units abutted; here, it can be understood that after the two ends of the pair of column units abutted are positioned and inserted by the positioning column and the positioning hole, the connecting piece can fix and mount the two ends of the pair of column units abutted after the positioning and insertion.

[0066] That is, for the two ends of the pair of column units abutted, the embodiment first realizes the positioning and insertion of the two ends by the positioning column and the positioning hole, and then realizes the fixed connection of the two ends by the connecting piece, so that the splicing operation is simple and the splicing structure is stable.

[0067] It can be understood that the purpose of the connecting piece is to fix and mount the two ends of the pair of column units abutted after the positioning and insertion, and the connecting piece can be a one-piece profile or a split profile, which is not limited in the embodiment.

[0068] Furthermore, it is understood that the surface of the column unit should be provided with a concave guide groove, the guide groove extending along the first direction, and after the two ends of the docking of a pair of column units are fixedly installed, the pair of guide grooves can be spliced ​​to form a straight track for the transport mechanism of the track transport robot to move up and down; wherein, the connector in this embodiment should avoid the guide groove to avoid obstructing the up and down movement of the transport mechanism.

[0069] Specifically, it can be understood that the cross-section of the connector perpendicular to the first direction X can be, for example, L-shaped or U-shaped, and the connector with an L-shaped or U-shaped cross-section can avoid the guide groove 14.

[0070] This application provides a splicing gantry for a track-carrying robot and a track-carrying robot. The splicing gantry includes column units and a splicing structure for fixing the two ends of a pair of column units together. The splicing structure includes positioning posts, positioning holes, and connectors. The positioning posts and positioning holes are respectively located on the two end faces of the pair of column units. The positioning holes are used for the insertion and installation of the positioning posts. Then, the two ends of the connectors along a first direction are respectively fixedly installed on the two ends of the pair of column units together. In this way, the splicing structure can fix the two ends of the pair of column units together, or fix the pair of column units along their length, thereby extending the height of the track-carrying robot gantry and solving the technical problem that the operating height of the track-carrying robot is limited due to the short length of the existing gantry.

[0071] Furthermore, in this embodiment, when the two ends of a pair of column units are fixedly connected, the connector of the splicing structure will avoid the concave guide groove on the surface of the column unit. Thus, it can be understood that a pair of guide grooves can be spliced ​​to form a straight track for the transport mechanism of the track transport robot to move up and down.

[0072] Regarding the cross-section of the column unit 10, one possible implementation can be found in [reference needed]. Figure 6 In a plane perpendicular to the first direction X, the cross section of the column unit 10 includes a connecting portion 11 extending along the second direction Y, which is perpendicular to the first direction X. A pair of guide portions 12 extend from both ends of the connecting portion 11 toward the same side, so that the space between the pair of guide portions 12 forms a concave guide groove 14.

[0073] That is, specifically, see Figure 6 The column unit ( Figure 6 The column unit in the middle is specifically the first column profile 15) with a cross section perpendicular to the first direction including a connecting part. The connecting part extends along the second direction. Then, a pair of guide parts extend from both ends of the connecting part toward the same side. In this way, the space between the pair of guide parts can form a concave guide groove.

[0074] It can be understood that at this time, the bottom surface of the guide groove (i.e. the surface of the connecting portion facing the guide portion) is used for the up and down walking of the walking wheels of the carrying mechanism, and the side surface of the guide groove (i.e. the surface opposite to the guide portion) is used for walking limiting of the walking wheels of the carrying mechanism.

[0075] In a specific embodiment, the side of the connecting portion 11 away from the guide portion 12 is provided with a supporting portion 13; wherein the first outer surface 131 of the supporting portion 13 away from the connecting portion 11 and the second outer surface 121 of at least one guide portion 12 are used for fixed installation of the connecting piece, so that the connecting piece avoids the guide groove 14.

[0076] The embodiment can also be provided with a supporting portion on the side of the connecting portion away from the guide portion to increase the stability of the column unit.

[0077] In a preferred embodiment, the supporting portion 13 can be hollow to reduce the weight of the column unit 10.

[0078] Specifically, it can be understood that when the cross section of the connecting piece is L-shaped, the first outer surface of the supporting portion away from the connecting portion and the second outer surface of any one guide portion are used for fixed installation of the L-shaped connecting piece; when the cross section of the connecting piece is U-shaped, the first outer surface of the supporting portion away from the connecting portion and the pair of second outer surfaces of the pair of guide portions are used for fixed installation of the U-shaped connecting piece; the connecting piece can avoid the guide groove.

[0079] In a specific embodiment, the first outer surface 131 is provided with a first installation positioning groove 132 extending along the first direction X, and the first installation positioning groove 132 is used for positioning installation of the first screw fastening the connecting piece and the column unit 10.

[0080] That is, the first installation positioning groove extending along the first direction can be specifically provided on the first outer surface of the supporting portion away from the connecting portion, and the first installation positioning groove can position the first screw, wherein for example two first installation positioning grooves can be specifically provided on the first outer surface.

[0081] In a specific embodiment, the second outer surface 121 is provided with a second installation positioning groove 122 extending along the first direction X, and the second installation positioning groove 122 is used for positioning installation of the second screw fastening the connecting piece and the column unit 10.

[0082] Similarly, the second installation positioning groove extending along the first direction can be specifically provided on the second outer surface of the guide portion, and the second installation positioning groove can position the second screw, wherein for example one second installation positioning groove can be specifically provided on the second outer surface.

[0083] Of course, it can be understood that in some embodiments, only the first mounting positioning groove can be provided on the first outer surface, and the second mounting positioning groove is not provided on the second outer surface, or only the second mounting positioning groove can be provided on the second outer surface, and the first mounting positioning groove is not provided on the first outer surface, or the first mounting positioning groove and the second mounting positioning groove can be provided on the first outer surface and the second outer surface, respectively.

[0084] As to the arrangement of the positioning column 21 and the positioning hole 22, in one possible embodiment, in combination with Figures 5-7 The column unit 10 comprises a first column profile 15 extending along the first direction X; wherein the positioning column 21 and the positioning hole 22 are arranged on the two end faces of the abutment of the pair of first column profiles 15, and the connecting piece comprises a first connecting profile 231, the two ends of the first connecting profile 231 are fixed to the end portions of the pair of first column profiles 15, respectively.

[0085] In this embodiment, the positioning column and the positioning hole mentioned above can be directly arranged on the end face of the first column profile.

[0086] That is, in the pair of first column profiles, the positioning column is arranged on the end face of the abutment of one of the first column profiles, and the positioning hole is arranged on the end face of the abutment of the other of the first column profiles.

[0087] At this time, it can be understood that the connecting piece can comprise a first connecting profile arranged integrally, and the two ends of the first connecting profile can be directly fixed to the end portions of the pair of first column profiles.

[0088] As to the arrangement of the positioning column 21 and the positioning hole 22, in another possible embodiment, in combination with Figures 1-4 The column unit 10 comprises a second column profile 16 extending along the first direction X and a connecting flange 17 fixed to the end face of the second column profile 16; wherein the positioning column 21 and the positioning hole 22 are arranged on the two end faces of the abutment of the pair of connecting flanges 17, the connecting piece comprises a pair of second connecting profiles 232, the second connecting profiles 232 are fixed to the end portions of the abutment of the second column profiles 16 and are fixed to the connecting flanges 17; and the connecting piece further comprises a flange connecting screw 30 for fixing the pair of connecting flanges 17 of the abutment.

[0089] In this embodiment, the positioning column and the positioning hole mentioned above can be arranged on the connecting flange fixed to the end face of the second column profile.

[0090] That is, the end face of the second column profile can be first fastened with the connecting flange through the flange fixing screw 40, and in the pair of second column profiles, the positioning column is arranged on the connecting flange of the end portion of one of the second column profiles, and the positioning hole is arranged on the connecting flange of the end portion of the other of the second column profiles.

[0091] At this time, it can be understood that the connecting piece can include a pair of second connecting profiles arranged separately, each second connecting profile being used for fixedly mounting one second column profile and the connecting flange at the end thereof; and the connecting piece further includes a flange connecting screw (the connecting flange 17 is provided with a flange connecting through hole 171 for the flange connecting screw 30 to pass through) for fastening the pair of connecting flanges, so that the end portions of the pair of second column profiles abutting each other are fixedly connected.

[0092] In other words, for each second column profile, the end portion abutting each other is fixedly mounted with the second connecting profile, the end face of the abutting end portion is fixedly mounted with the connecting flange, and the connecting flange is fixedly mounted with the second connecting profile; and the pair of connecting flanges of the abutting end portions of the pair of second column profiles are further fixedly mounted through the flange connecting screw.

[0093] Regarding the fixed mounting of the connecting flange 17 and the second connecting profile 16, in a specific embodiment, in a plane perpendicular to the first direction X, the connecting flange 17 is arranged protruding relative to the cross section of the second column profile 16; wherein the second connecting profile 232 includes a first mounting portion 2321 extending along the first direction X, the first mounting portion 2321 is provided with a second mounting portion 2322 perpendicular to the first direction X towards the end portion of the connecting flange 17, the second mounting portion 2322 is used for abutting against the protruding portion of the connecting flange 17 relative to the cross section of the second column profile 16; and the flange connecting screw 30 is used for fixedly mounting the pair of connecting flanges 17 abutting each other and the pair of second mounting portions 2322.

[0094] Specifically, first, in a plane perpendicular to the first direction, the connecting flange should be arranged protruding relative to the cross section of the second column profile.

[0095] Then, the second connecting profile includes a first mounting portion and a second mounting portion arranged perpendicularly, the first mounting portion extends along the first direction, the first mounting portion is used for fixedly mounting with the second column profile, the first mounting portion is vertically bent with the second mounting portion towards the end portion of the connecting flange, the second mounting portion abuts against the protruding portion of the connecting flange relative to the second column profile, so that the second mounting portion is fixedly mounted with the protruding portion of the connecting flange relative to the second column profile, and the fixed mounting of the connecting flange and the second connecting profile is realized.

[0096] And it can be understood that the fixed mounting of the second mounting portion and the protruding portion of the connecting flange relative to the second column profile can be realized by means of the flange connecting screw; that is, the flange connecting screw arranged along the first direction can not only fixedly mount the pair of connecting flanges, but also fixedly mount the pair of second mounting portions abutting against the pair of connecting flanges at the same time, and the mounting structure is simple.

[0097] Based on the spliced gantry disclosed in the above embodiment, the application further discloses a track carrying robot, which comprises a spliced gantry and a carrying mechanism installed on the spliced gantry in up-down direction, wherein the spliced gantry is the above-mentioned spliced gantry.

[0098] The above describes the basic principles of the application in combination with specific embodiments. However, it should be noted that the advantages, advantages, effects and the like mentioned in the application are only examples and are not limiting, and these advantages, advantages, effects and the like cannot be considered as the must-haves of each embodiment of the application. In addition, the above-mentioned specific details are only for the purpose of example and for the purpose of understanding, and are not limiting, and the above-mentioned details do not limit the application to the must-haves of the above-mentioned specific details.

[0099] The block diagrams of the devices, apparatuses, equipment, systems involved in the application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration shown in the block diagram must be connected, arranged and configured. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged and configured in any way. Words such as "include", "contain", "have" and the like are open-ended words, which mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0100] It should also be noted that in the devices, equipment and methods of the application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the application.

[0101] The above description of the disclosed aspects is provided so that any person skilled in the art can make or use the application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the application. Therefore, the application is not intended to be limited to the aspects shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0102] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the forms disclosed. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations of the aspects and embodiments discussed above are within the scope of the present application.

Claims

1. A spliced gantry for a rail handling robot, characterized in that, The spliced door frame comprises a column unit extending along a first direction and a splicing structure for fixedly connecting two ends of a pair of column units abutted to each other; The surface of the column unit is provided with an inwardly recessed guide groove extending along the first direction; The splicing structure comprises a positioning column, a positioning hole for inserting the positioning column, and a connecting piece, the positioning column and the connecting piece extending along the first direction; The positioning column and the positioning hole are separately arranged at two end faces of a pair of column units abutted to each other, and the connecting piece is fixedly installed at two ends of a pair of column units abutted to each other along the first direction; When the splicing structure fixedly connects two ends of a pair of column units abutted to each other, the connecting piece avoids the guide groove, so that a pair of guide grooves are spliced into a straight track for the up-down movement of a track carrying robot.

2. The spliced door frame according to claim 1, wherein, The connecting piece is in L shape or U shape in the cross section perpendicular to the first direction.

3. The spliced door frame of claim 1, wherein, In the plane perpendicular to the first direction, the cross section of the column unit comprises a connecting part extending along a second direction, the second direction being perpendicular to the first direction, and a pair of guide parts extending towards the same side at two ends of the connecting part, so that the space between a pair of guide parts forms the inwardly recessed guide groove.

4. The spliced door frame according to claim 3, wherein, The side of the connecting part away from the guide part is provided with a supporting part; The first outer surface of the supporting part away from the connecting part and the second outer surface of at least one guide part are used for fixedly installing the connecting piece, so that the connecting piece avoids the guide groove.

5. The spliced door frame according to claim 4, wherein The first outer surface is provided with a first installation positioning groove extending along the first direction, the first installation positioning groove being used for positioning and installing a first screw fastening the connecting piece and the column unit; and / or The second outer surface is provided with a second installation positioning groove extending along the first direction, the second installation positioning groove being used for positioning and installing a second screw fastening the connecting piece and the column unit.

6. The ganged door frame of claim 4, wherein, The supporting part is hollow.

7. The spliced door frame of claim 1, wherein, The column unit comprises a first column profile extending along the first direction; The positioning column and the positioning hole are separately arranged at two end faces of a pair of first column profiles abutted to each other, and the connecting piece comprises a first connecting profile, two ends of the first connecting profile being fixedly installed at the end portions of a pair of first column profiles, respectively.

8. The spliced door frame of claim 1, wherein, The column unit comprises a second column profile extending along the first direction and a connecting flange fixedly installed at the end face of the second column profile; The positioning column and the positioning hole are separately arranged at two end faces of a pair of connecting flanges abutted to each other, the connecting piece comprises a pair of second connecting profiles, the second connecting profiles being fixedly installed at the end portions of the second column profiles abutted to each other and fixedly installed with the connecting flanges; The connecting piece further comprises a flange connecting screw for fixedly installing a pair of connecting flanges abutted to each other.

9. The ganged door frame of claim 8, wherein, In the plane perpendicular to the first direction, the cross section of the connecting flange relative to the second column profile is protrudingly arranged; The second connecting profile includes a first mounting portion extending along the first direction, and a second mounting portion perpendicular to the first direction is arranged at an end of the first mounting portion towards the connecting flange, and is used for abutting against a protruding part of the connecting flange relative to the second column profile; The flange connecting screw is used for fixedly mounting a pair of the connecting flanges and a pair of the second mounting portions in abutment.

10. A rail handling robot, characterized in that The rail transfer robot comprises a spliced gantry and a transfer mechanism installed on the spliced gantry and capable of ascending and descending, wherein the spliced gantry is the spliced gantry according to any one of claims 1-9.

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