Logistics trolley transfer device

Abstract

The present invention discloses a transfer device for a logistics trolley, the transfer device for the logistics trolley comprises: a base, a movable track and a screw-nut assembly, the screw-nut assembly comprises a screw and a nut, the screw is arranged on the base, and the nut is arranged on the movable track; a bearing seat, the two ends of the screw are respectively mounted on the base through the bearing seat, the bearing seat comprises a first inner shaft and a first outer shaft, the first inner shaft sleeve is arranged on the screw, the first outer shaft is fixedly connected to the base, the screw rotates relative to the first inner shaft or the first outer shaft around the screw axis in a first rotation direction, and the first inner shaft rotates relative to the first outer shaft around a straight line perpendicular to the screw axis in a second rotation direction. According to the transfer device for the logistics trolley of the embodiment of the present invention, by respectively arranging bearing seats at both ends of the screw, the two ends of the screw can have a high degree of freedom and can prevent jamming.

Description

Technical Field

[0001] The invention relates to the field of rail transportation, and in particular to a rail switching device for a logistics trolley. Background Art

[0002] With the development of logistics, logistics trolleys and their transfer devices are also being gradually studied to provide faster logistics, thereby reducing the workload of logistics practitioners. However, the transfer device in the relevant technology relies on machining accuracy to ensure the reliability of the transmission, which leads to an increase in production costs. In addition, the transmission device also needs to be assembled more accurately in terms of assembly. Otherwise, it is easy to get stuck or cause the transmission structure such as the transmission screw to deform during the transmission process, which not only affects the service life of the product, but also reduces production efficiency and transportation efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a logistics trolley switching device, which can reduce the processing and installation difficulties of the lead screw and prevent the lead screw from being stuck.

[0004] According to the logistics trolley track switching device of the embodiment of the present invention, the logistics trolley track switching device includes: a base, a movable rail and a screw-nut assembly, the screw-nut assembly includes a screw and a nut, the screw is arranged on the base, and the nut is arranged on the movable rail; a bearing seat, both ends of the screw are respectively mounted on the base through the bearing seat, the bearing seat includes a first inner shaft and a first outer shaft, the first inner shaft sleeve is arranged on the screw, the first outer shaft is fixedly connected to the base, the screw rotates relative to the first inner shaft or the first outer shaft around the screw axis along a first rotation direction, and the first inner shaft rotates relative to the first outer shaft around a straight line perpendicular to the screw axis along a second rotation direction.

[0005] According to the logistics trolley switching device of the embodiment of the present invention, by respectively arranging bearing seats at both ends of the lead screw, the two ends of the lead screw can have a higher degree of freedom, the coaxiality requirements at both ends of the lead screw can be reduced, and the processing accuracy at both ends of the lead screw can be reduced, thereby reducing the production difficulty and reducing the production cost, and can also eliminate the influence caused by processing errors and installation errors, thereby reducing the assembly difficulty and improving the assembly efficiency. At the same time, during the transmission process of the lead screw, since both ends of the lead screw have a higher degree of freedom, the lead screw is not easy to be stuck and the transmission effect is good.

[0006] In addition, the logistics trolley switching device according to the present invention may also have the following additional technical features:

[0007] In some embodiments of the present invention, in the second rotation direction, the inner wall of the first outer shaft is formed with a first arc surface and / or a second arc surface, and the first inner shaft rotates along the first arc surface or the first inner shaft rotates along the second arc surface.

[0008] In some embodiments of the present invention, the logistics trolley switching device also includes: a floating component, which is arranged between the moving track and the base, and the floating component includes: a first frame, which is fixedly connected to the base, and a slide groove extending along the axis direction of the screw is formed on the first frame; a floating block, which is connected to the moving track, the floating block cooperates with the slide groove, and can move relative to the slide groove in a direction perpendicular to the axis of the screw.

[0009] Optionally, the floating assembly also includes: a first connecting plate, which is fixedly connected to the movable track; a first mounting block, which is fixed to the first connecting plate; and a second mounting block, which is connected to the first mounting block to limit the floating block between the first mounting block and the second mounting block.

[0010] Furthermore, the floating assembly is arranged on at least one side of the movable track which is perpendicular to the straight line direction where the axis of the lead screw is located.

[0011] In some embodiments of the present invention, the logistics trolley transfer device also includes: a slide rail assembly, which is arranged between the movable rail and the base, and the slide rail assembly includes: a second connecting plate, which is fixedly connected to the movable rail, and a slider is formed on the second connecting plate; a second frame, on which a slide rail cooperating with the slider is formed, and the slide rail extends along the axis direction of the screw, wherein the floating assembly is arranged on one side of the movable rail perpendicular to the straight line direction of the screw axis, and the slide rail assembly is arranged on the other side of the movable rail perpendicular to the straight line direction of the screw axis.

[0012] Optionally, the slide rail assembly also includes: a movable block, which is arranged between the second connecting plate and the nut, and the movable block includes: a nut seat, the nut is fixedly connected to the nut seat; a connecting bearing, the connecting bearing is fixedly connected to the second connecting plate; a guide rod, one end of the guide rod cooperates with the nut seat, and the other end of the guide rod is rotatably arranged in the connecting bearing.

[0013] Furthermore, the guide rod and the nut seat, and / or the guide rod and the connecting bearing are suitable for relative sliding along the axial direction of the guide rod.

[0014] Further, the connecting bearing includes a second inner shaft and a second outer shaft, and the second inner shaft and the second outer shaft are suitable for rotating around an axial direction perpendicular to the second outer shaft, wherein the second inner shaft cooperates with the guide rod, and the second outer shaft cooperates with the second connecting plate.

[0015] In some embodiments of the present invention, the logistics trolley switching device further includes: a drag chain, one end of which is fixedly connected to the base, and the other end of which is fixedly connected to the movable track.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of a logistics trolley switching device according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Sectional view along line AA.

[0020] Figure 3 It is a structural schematic diagram of a lead screw and nut assembly of a logistics trolley switching device according to an embodiment of the present invention.

[0021] Figure 4 yes Figure 3 Sectional view along line BB.

[0022] Figure 5 It is a cross-sectional view of a bearing seat of a logistic trolley shunting device according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] Logistics trolley transfer device 100,

[0025] Base 1,

[0026] Mobile track 2,

[0027] Screw nut assembly 3, screw 31, nut 32,

[0028] Driving motor 33, driving wheel 34, driven wheel 35, transmission belt 36,

[0029] Bearing seat 4, first inner shaft 41, first outer shaft 42, first arc surface 421,

[0030] Floating assembly 5, first frame 51, slide groove 511, floating block 52, first connecting plate 53, first mounting block 54, second mounting block 55,

[0031] Slide rail assembly 6, second connecting plate 61, slider 611, second frame 62, slide rail 621,

[0032] Movable block 7, nut seat 71, connecting bearing 72, second inner shaft 721, second outer shaft 722, guide rod 73,

[0033] Drag chain 8, fixed track 9. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Reference below Figure 1-Figure 5 The logistics trolley switching device 100 according to an embodiment of the present invention is described.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the logistics trolley switching device 100 according to this embodiment of the present invention includes a base 1, a movable rail 2, a screw nut assembly 3 and a bearing seat 4.

[0037] Specifically, the screw nut assembly 3 includes a screw 31 and a nut 32. The screw 31 is arranged on the base 1, and the nut 32 is arranged on the movable track 2. Therefore, when the driving device drives the screw 31 to rotate, the nut 32 can reciprocate along the axis of the screw 31, so that the movable track 2 connected to the nut 32 reciprocates along the axis of the screw 31. The structure is simple and the operation is convenient. Figure 1 As shown, the screw 31 extends in the front-to-back direction, and the movable track 2 can move from front to back or from back to front, so that the movable track 2 can correspond to different fixed tracks 9 in the front-to-back direction, so that the logistics trolley can move from the movable track 2 to different fixed tracks 9, and also can move from different fixed tracks 9 to the movable track 2.

[0038] Specific as Figure 1 As shown, the logistics trolley can move from the fixed track 9 on the front side to the mobile track 2, and then the mobile track 2 moves from front to back so that the mobile track 2 corresponds to the fixed track 9 on the rear side. At this time, the logistics trolley can move from the mobile track 2 to the fixed track 9 on the rear side.

[0039] However, it should be noted that when the screw-nut assembly 3 is used to transmit the movement of the movable rail 2, higher requirements are placed on the coaxiality of the two ends of the screw 31. When there is a difference in the coaxiality of the two ends of the screw 31, it is easy to cause damage to both the movable rail 9 and the screw 31, which is not conducive to transmission. At the same time, the screw 31 is also easy to be stuck by the movable rail 2 during the transmission process, thereby causing two-way damage to the movable rail 2 and the screw 31.

[0040] Based on this, in the present application, in order to reduce the requirement for the coaxiality of the two ends of the screw 31, the two ends of the screw 31 are respectively mounted on the base 1 through the bearing seat 4, for example Figure 1 As shown, the screw 31 extends in the front-to-back direction. By arranging a bearing seat 4 between the screw 31 and the base 1, the screw 31 can be rotated around the axis of the screw 31 relative to the bearing seat 4. Moreover, during the rotation of the screw 31 around the axis of the screw 31, the screw 31 can also be rotated relative to the bearing seat 4 around a direction perpendicular to the straight line where the axis of the screw 31 is located. Specifically, the screw 31 can be rotated around the straight line where the left-right direction is located, or the screw 31 can be rotated around the straight line where the up-down direction is located. Here, it should be noted that the up-down direction is perpendicular to the left-right direction and also perpendicular to the front-to-back direction. Here, up-down, left-right and front-to-back are only for the convenience of describing the position, and are not limitations on this application.

[0041] Please refer to the following Figure 5 The structure of the bearing seat 4 is described in detail:

[0042] The bearing seat 4 includes a first inner shaft 41 and a first outer shaft 42. The first outer shaft 42 is sleeved on the first inner shaft 41, and the first inner shaft 41 is sleeved on the screw 31. The first outer shaft 42 is fixedly connected to the base 1. The screw 31 rotates relative to the first inner shaft 41 or the first outer shaft 42 around the axis of the screw 31 along a first rotation direction, and the first inner shaft 41 rotates relative to the first outer shaft 42 around a straight line perpendicular to the axis of the screw 31 along a second rotation direction. Here, it should be noted that in order to better describe the rotation direction of the screw 31, the direction of the screw 31 around the axis of the screw 31 is taken as the first rotation direction, and the direction of the screw 31 around the axis perpendicular to the axis is taken as the second rotation direction. Further, in order to better describe the second rotation direction of the screw 31 of the present application, in an example, the screw 31 takes the bearing seat 4 as the center and the screw 31 as the radius. Figure 1 The lead screw 31 swings in the left and right directions as shown. Therefore, when the two ends of the lead screw 31 are not on the same axis, the bearing seats 4 at both ends can be adjusted so that the lead screw 31 can rotate better, thereby reducing the coaxiality requirements at both ends of the lead screw 31, and also reducing the machining accuracy at both ends of the lead screw 31, thereby reducing the production difficulty and reducing the production cost.

[0043] In addition, it can also be understood that since both ends of the screw 31 can be adjusted to a certain extent, both ends of the screw 31 can have a high degree of freedom, which can eliminate the impact of processing errors and installation errors, thereby reducing assembly difficulty and improving assembly efficiency.

[0044] Therefore, according to the logistics trolley switching device 100 of the embodiment of the present invention, by respectively arranging bearing seats 4 at both ends of the lead screw 31, the two ends of the lead screw 31 can have a higher degree of freedom, the coaxiality requirements at both ends of the lead screw 31 can be reduced, and the processing accuracy at both ends of the lead screw 31 can be reduced, thereby reducing the production difficulty and reducing the production cost, and can also eliminate the influence caused by processing errors and installation errors, thereby reducing the assembly difficulty and improving the assembly efficiency. At the same time, during the transmission process of the lead screw 31, since the two ends of the lead screw 31 have a higher degree of freedom, the lead screw 31 can be not easily stuck, and the transmission effect is good.

[0045] In some embodiments of the present invention, the first inner shaft 41 can rotate around the axis of the screw 31 relative to the first outer shaft 42, so that the screw 31 can rotate around the axis of the screw 31 in a first rotation direction. In other embodiments of the present invention, a ball bearing can be provided between the first inner shaft 41 and the screw 31, thereby allowing the screw 31 to rotate around the axis of the screw 31 in a first rotation direction relative to the inner shaft.

[0046] In some embodiments of the present invention, in the second rotation direction, the inner wall of the first outer shaft 42 is formed with a first arc surface 421 and / or a second arc surface, and the first inner shaft 41 rotates along the first arc surface 421 or the first inner shaft 41 rotates along the second arc surface. In one example, a first curved surface 421 is formed on the inner wall of the first outer shaft 42, and the first inner shaft 41 can slide along the first curved surface 421, so that the first inner shaft 41 rotates relative to the first outer shaft 42 in the second rotation direction; in another example, a second curved surface is formed on the inner wall of the first outer shaft 42, and the first inner shaft 41 can slide along the second curved surface, so that the first inner shaft 41 rotates relative to the first outer shaft 42 in the second direction; in another example, a first curved surface 421 and a second curved surface are formed on the inner wall of the first outer shaft 42, wherein the first curved surface 421 and the second curved surface are symmetrically arranged on the inner wall of the first outer shaft 42, and the symmetry plane is the plane where the midline of the thickness direction of the first outer shaft 42 is located, thereby, when the first inner shaft 41 slides along the first curved surface 421, the first inner shaft 41 can rotate relative to the first outer shaft 42 in the second rotation direction, and when the first inner shaft 41 slides along the second curved surface, the first inner shaft 41 can rotate relative to the first outer shaft 42 in the direction opposite to the second rotation direction.

[0047] In a specific example, the inner wall of the first outer shaft 42 is formed with a first arc surface 421 and a second arc surface, so that when the screw 31 is centered on the left bearing seat 4, the screw 31 can swing back and forth in the left and right directions, and can also swing back and forth in the up and down directions, so that the left end of the screw 31 has a higher degree of rotational freedom. Similarly, the right end of the screw 31 can also have a higher degree of rotational freedom, which can better reduce the coaxiality requirements of the two ends of the screw 31, thereby reducing the difficulty of production and assembly.

[0048] In some embodiments of the present invention, the inner wall of the first outer shaft 42 is formed with a first arc surface 421 and a second arc surface, and the first arc surface 421 and the second arc surface are symmetrically arranged on the inner wall of the first outer shaft 42, and the outer wall of the first inner shaft 41 is a plane, that is, Figure 5 As shown, the first inner shaft 41 can slide better along the first arc surface 421 or the first inner shaft 41 can slide better along the second arc surface.

[0049] Optionally, the outer wall of the first inner shaft 41 may also be formed as an arc surface, so that the first inner shaft 41 can slide along the first arc surface 421 better, or the first inner shaft 41 can slide along the second arc surface.

[0050] In other examples, the inner wall surface of the first outer shaft 42 may also be a mating surface of other shapes, which is not limited here.

[0051] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the logistics trolley switching device 100 also includes a floating component 5, which is arranged between the moving track 2 and the base 1. By setting the floating component 5, the relative position between the moving track 2 and the base 1 can be limited to a certain extent, so that the moving track 2 can be better moved under the transmission action of the screw nut assembly 3. Specifically, the floating component 5 includes a first frame 51 and a floating block 52. The first frame 51 is fixedly connected to the base 1. A slide groove 511 extending along the axial direction of the screw 31 is formed on the first frame 51. The floating block 52 is connected to the moving track 2, and the floating block 52 cooperates with the slide groove 511. Therefore, when the moving track 2 moves along the screw 31, the moving track 2 can be better limited by the cooperation between the floating block 52 and the slide groove 511.

[0052] Furthermore, the floating block 52 can move relative to the slide groove 511 in a direction perpendicular to the axis of the screw 31, where the direction perpendicular to the axis of the screw 31 can be the left-right direction or the up-down direction. Here, in a specific example, the floating block 52 and the slide groove 511 are clearance-matched, that is, in the left-right direction, there is an assembly clearance between the floating block 52 and the slide groove 511, and in the up-down direction, there is an assembly clearance between the floating block 52 and the slide groove 511.

[0053] In another example, there is an assembly gap between the floating block 52 and the slide groove 511 in the left-right direction, so that the floating block 52 and the slide groove 511 can move relative to each other in the left-right direction. Therefore, when the lead screw 31 swings in the left-right direction, the moving track 2 can be shaken in the left-right direction. Through the cooperation between the floating block 52 and the slide groove 511, even if the moving track 2 shakes in the left-right direction, it will not be stuck in the process of reciprocating in the front-back direction, and the flexibility is good. Furthermore, the outer wall of the floating block 52 and the inner wall of the slide groove 511 can be formed with mutually matching arc surfaces, thereby making it possible for the floating block and the slide groove 511 to rotate relatively well.

[0054] In some embodiments of the present invention, Figure 2 As shown, the floating assembly 5 also includes a first connecting plate 53, a first mounting block 54 and a second mounting block 55. The first connecting plate 53 is fixedly connected to the movable track 2, the first mounting block 54 is fixed on the first connecting plate 53, and the second mounting block 55 is connected to the first mounting block 54 to limit the floating block 52 between the first mounting block 54 and the second mounting block 55.

[0055] In such Figure 1 and Figure 2 In the example shown, the first connecting plate 53 is installed at the lower end of the movable rail 2, the first connecting plate 53 is assembled by screws, the first mounting block 54 is fixed to the first connecting plate 53 by screws, and corresponding bolt holes are formed on the first mounting block 54, the floating block 52 and the second mounting block 55, respectively. The bolts can pass through the bolt holes on the first mounting block 54, the floating block 52 and the second mounting block 55 in turn to fix the floating block 52 and the second mounting block 55 to the first mounting block 54. The structure is simple and easy to assemble, and it can also prevent the floating block 52 from being damaged by the bolts when the floating block 52 is assembled.

[0056] In another example, the floating block 52 is movably disposed between the first mounting block 54 and the second mounting block 55. For example, as shown in the figure, one end of the floating block 52 is movably disposed in the slide groove 511, and the other end of the floating block 52 is movably disposed between the first mounting block 54 and the second mounting block 55. Thus, the movable space of the floating block 52 can be further increased, and the possibility of the moving track 2 being stuck can be further reduced.

[0057] In some embodiments of the present invention, the floating assembly 5 is disposed on at least one side of the moving track 2 that is perpendicular to the linear direction of the lead screw 31. Figure 2In the left and right directions, the floating component 5 can be set below the left end of the moving track 2, or below the right end of the moving track 2, or below the left end of the moving track 2 and below the right end of the moving track 2 at the same time. It can be set according to actual conditions and is not limited here.

[0058] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the logistics trolley switching device 100 also includes a slide rail assembly 6, a floating assembly 5 is arranged on one side of the moving track 2 perpendicular to the straight line direction of the axis of the lead screw 31, and the slide rail assembly 6 is arranged on the other side of the moving track 2 perpendicular to the straight line direction of the axis of the lead screw 31. That is to say, in one example, the slide rail assembly 6 can be arranged below the left end of the moving track 2, and the floating assembly 5 is arranged below the right end of the moving track 2. In another example, the slide rail assembly 6 can be arranged below the right end of the moving track 2, and the floating assembly 5 is arranged below the left end of the moving track 2. It can be understood that by setting the slide rail assembly 6, one end of the moving track 2 can be better positioned, so that the moving track 2 can be relatively stable and not easy to deviate when reciprocating in the front and rear directions, thereby preventing the moving track 2 from colliding with the fixed track during the movement, and avoiding damage to the moving track 2.

[0059] For the slide rail assembly 6, specifically, the slide rail assembly 6 includes a second connecting plate 61 and a second frame 62. The second connecting plate 61 is fixedly connected to the movable track 2. A slider 611 is formed on the second connecting plate 61. A slide rail 621 cooperating with the slider 611 is formed on the second frame 62. The slide rail 621 extends along the axial direction of the lead screw 31. Therefore, through the cooperation of the slide rail 621 and the slider 611, the second connecting plate 61 and the second frame 62 can be better limited.

[0060] In such Figure 1 and Figure 2 In the example shown, in the direction from left to right, the upper surface of the slide rail 621 tilts from top to bottom and then from bottom to top, the shape of the upper surface of the slide rail 621 and the shape of the lower surface of the slide rail 621 are symmetrically arranged, and the upper surface of the slide groove 511 and the lower surface of the slide groove 511 corresponding to the upper surface of the slide rail 621 and the lower surface of the slide rail 621 are formed on the slider 611, thereby enabling the slide rail 621 and the slide groove 511 to better cooperate with each other.

[0061] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4As shown, the slide rail assembly 6 also includes a movable block 7, which is arranged between the upper second connecting plate 61 and the nut 32. The movable block 7 includes a nut seat 71, a connecting bearing 72 and a guide rod 73. The nut 32 is fixedly connected to the nut seat 71, the connecting bearing 72 is fixedly connected to the second connecting plate 61, one end of the guide rod 73 cooperates with the nut seat 71, and the other end of the guide rod 73 is rotatably arranged in the connecting bearing 72. Therefore, when the assembly position of the lead screw 31 is tilted in the up-down direction, the nut 32 matched with the lead screw 31 is also tilted in the up-down direction. At this time, since the guide rod 73 is matched with the nut seat 71, in one example, the nut seat 71 can be fixedly matched with the guide rod 73, thereby, the relative rotation between the guide rod 73 and the connecting bearing 72 can make the movable track 2 not easy to be stuck when the movable track 2 reciprocates in the front-back direction; in another example, the nut seat 71 can rotate relative to the guide rod 73, thereby, only the relative rotation between the nut seat 71 and the guide rod 73 can meet the problem that the movable track 2 is not easy to be stuck when the lead screw 31 is tilted. In another example, when the two ends of the guide rod 73 can rotate relative to the nut seat 71 and the connecting bearing 72 respectively, the movable block 7 can have a higher degree of rotational freedom, thereby better preventing the movable track 2 from being stuck during the forward and backward movement.

[0062] Optionally, the guide rod 73 and the nut seat 71, and / or the guide rod 73 and the connecting bearing 72 are adapted to slide relative to each other along the axis direction of the guide rod 73. That is, in one example, the guide rod 73 and the nut seat 71 can slide relative to each other along the axis direction of the guide rod 73. Figure 1 In another example, the guide rod 73 and the connecting bearing 72 can slide relative to each other in the left and right directions as shown. Figure 1 In another example, one end of the guide rod 73 cooperates with the nut seat 71, and the guide rod 73 and the nut seat 71 can slide relative to each other along the left and right directions as shown. Figure 1 The guide rod 73 can slide relative to the left and right directions as shown, and the other end of the guide rod 73 can cooperate with the connecting bearing 72, and the other end of the guide rod 73 and the connecting bearing 72 can be connected along the same direction as shown in FIG. Figure 1 The left and right directions shown are relative sliding.

[0063] In other examples, the diameter of the guide rod 73 at the portion where the guide rod 73 cooperates with the nut seat 71 is different from the diameter of the guide rod 73 at the portion where the guide rod 73 cooperates with the connecting bearing 72. Therefore, the different diameters at both ends of the guide rod 73 can better determine the transfer direction of the guide rod 73, and at the same time can better limit the sliding distance between the guide rod 73 and the nut seat 71, and better limit the sliding distance between the guide rod 73 and the connecting bearing 72.

[0064] It can be understood that when the guide rod 73 and the nut seat 71 can slide relative to each other in the left and right directions, or the guide rod 73 and the connecting bearing 72 can slide relative to each other in the left and right directions, when the position of the lead screw 31 changes in the left and right directions, the movable track 2 will not be stuck without changing its position in the left and right directions, thereby meeting the movement requirements of the movable track 2.

[0065] Optionally, the connecting bearing 72 includes a second inner shaft 721 and a second outer shaft 722, and the second inner shaft 721 and the second outer shaft 722 are suitable for rotating around an axis direction perpendicular to the second outer shaft 722, wherein the second inner shaft 721 cooperates with the guide rod 73, and the second outer shaft 722 cooperates with the second connecting plate 61. Here, it should be noted that the axis direction of the second outer shaft 722 can refer to the left and right direction shown in the figure, for example, the second outer shaft 722 and the second inner shaft 721 can rotate around a straight line in the front-back direction, or the second outer shaft 722 and the second inner shaft 721 can rotate around a straight line in the up-down direction. Of course, there can be other rotation directions, which will not be described in detail here.

[0066] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the logistics trolley transfer device 100 also includes a drag chain 8, one end of the drag chain 8 is fixedly connected to the base 1, and the other end of the drag chain 8 is fixedly connected to the moving track 2. Therefore, by arranging the drag chain 8 between the base 1 and the moving track 2, the position of the moving track 2 can be better limited. As shown in the figure, the left end of the moving track 2 is positioned by the slide rail assembly 6, and the right end of the moving track 2 is matched by the floating assembly 5 to prevent the moving track 2 from being stuck during the movement. At the same time, the drag chain 8 is arranged on the side of the moving track 2 adjacent to the floating assembly 5 to limit the relative position between the base 1 and the moving track 2, so that the moving track 2 can reciprocate well along the front and rear directions.

[0067] The structure and working process of a logistics trolley transfer device 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0068] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the logistics trolley switching device 100 includes a base 1, and a first frame 51 and a second frame 62 are provided in the left and right directions of the base 1. The first frame 51 is located on the right side of the base 1, and the second frame 62 is located on the left side of the base 1. The first frame 51 is provided with a plurality of mounting grooves in the upper and lower directions, and each mounting groove can be equipped with a slide rail 621. Therefore, the height of the slide rail 621 can be adjusted according to actual needs. A plurality of slide grooves 511 are provided in the upper and lower directions of the second frame 62. In this example, the number of the mounting grooves and the slide grooves 511 is the same, and the positions correspond to each other. Therefore, the height of the left and right ends of the movable track 2 can be better adjusted.

[0069] Furthermore, the first frame 51 can cooperate with the movable track 2 through the first connecting plate 53, wherein a mounting hole is formed on the first connecting plate 53, and bolts can cooperate with the mounting hole to assemble the first mounting block 54 on the first connecting plate 53, and corresponding bolt holes are formed on the first mounting block 54 and the second mounting block 55. Thus, the floating block 52 can be installed between the first mounting block 54 and the second mounting block 55 through the cooperation of the bolt hole and the first mounting block 54 and the second mounting block 55. Thus, the floating block 52 can be fixed between the first mounting block 54 and the second mounting block 55, which can facilitate the assembly and disassembly of the floating block 52, and also can assemble floating blocks 52 of different sizes, which is highly practical.

[0070] Furthermore, the floating block 52 can extend into the slide groove 511 to cooperate with the gap of the slide groove 511, so that the floating block 52 can slide in the up and down directions or left and right directions relative to the slide groove 511, thereby adjusting the relative position between the left end of the movable track 2 and the first frame 51, thereby preventing the movable track 2 from being stuck during the reciprocating movement in the front and rear directions.

[0071] Furthermore, a slide rail assembly 6 is also provided at the left end of the movable rail 2. Specifically, the slide rail assembly 6 includes a second connecting plate 61 and a second frame 62. The second connecting plate 61 is fixedly connected to the movable rail 2. A slider 611 is formed on the second connecting plate 61. A slide rail 621 cooperating with the slider 611 is formed on the second frame 62. The slide rail 621 extends along the axial direction of the screw 31. Therefore, through the cooperation of the slide rail 621 and the slider 611, the second connecting plate 61 and the second frame 62 can be better limited.

[0072] As for the driving part of the present application, the logistics trolley shunting device 100 includes a screw nut assembly 3, a driving motor 33, a driving wheel 34, a driven wheel 35 and a transmission belt 36. The screw nut assembly 3 includes a screw 31 and a nut 32. Specifically, the driving motor 33 can drive the driving wheel 34, and the driving wheel 34 drives the driven wheel 35 to rotate through the transmission belt 36. The driven wheel 35 is sleeved on the screw 31, thereby driving the screw 31 to rotate. During the rotation of the screw 31, the nut 32 can reciprocate in the front and rear directions.

[0073] The slide rail assembly 6 also includes a movable block 7, which is arranged between the upper second connecting plate 61 and the nut 32. The movable block 7 includes a nut seat 71, a connecting bearing 72 and a guide rod 73. The nut 32 is fixedly connected to the nut seat 71, the connecting bearing 72 is fixedly connected to the second connecting plate 61, one end of the guide rod 73 cooperates with the nut seat 71, and the other end of the guide rod 73 is rotatably arranged in the connecting bearing 72. Therefore, when the assembly position of the screw 31 tilts along the up and down directions, the nut 32 matched with the screw 31 also tilts along the up and down directions. At this time, due to the cooperation between the guide rod 73 and the nut seat 71, the nut seat 71 can be fixedly matched with the guide rod 73, thereby through the relative rotation between the guide rod 73 and the connecting bearing 72, the movable track 2 is not easily stuck when the movable track 2 reciprocates along the front and rear directions. The nut seat 71 can rotate relative to the guide rod 73. Therefore, only through the relative rotation between the nut seat 71 and the guide rod 73, the problem of the movable track 2 being not easily stuck when the screw 31 tilts can be solved.

[0074] Furthermore, the front and rear ends of the lead screw 31 can be respectively assembled on the base 1 through the bearing seat 4, the bearing seat 4 includes a first inner shaft 41 and a first outer shaft 42, the first outer shaft 42 is sleeved on the first inner shaft 41, and the first inner shaft 41 is sleeved on the lead screw 31, the first outer shaft 42 is fixedly connected to the base 1, the lead screw 31 rotates relative to the first inner shaft 41 or the first outer shaft 42 around the axis of the lead screw 31 in a first rotation direction, and the first inner shaft 41 rotates relative to the first outer shaft 42 around a straight line perpendicular to the axis of the lead screw 31 in a second rotation direction. Here, it should be noted that, in order to better describe the rotation direction of the lead screw 31, the direction of the lead screw 31 around the axis of the lead screw 31 is taken as the first rotation direction, and the direction of the lead screw 31 around the axis perpendicular to the axis is taken as the second rotation direction. Furthermore, in order to better describe the second rotation direction of the screw 31 of the present application, in an example, the screw 31 takes the bearing seat 4 as the center and the screw 31 as the radius, and can swing in the left and right directions as shown in the figure. Therefore, when the two ends of the screw 31 are not on the same axis, the bearing seats 4 at both ends can be adjusted so that the screw 31 can rotate better, thereby reducing the coaxiality requirements at both ends of the screw 31, and also reducing the processing accuracy at both ends of the screw 31, thereby reducing the production difficulty and reducing the production cost.

[0075] The logistics trolley switching device 100 also includes a drag chain 8, one end of which is fixedly connected to the base 1, and the other end of which is fixedly connected to the moving track 2. Therefore, by arranging the drag chain 8 between the base 1 and the moving track 2, the position of the moving track 2 can be better limited. Figure 2 As shown, the left end of the movable rail 2 is positioned by the slide rail assembly 6, and the right end of the movable rail 2 is cooperated by the floating assembly 5 to prevent the movable rail 2 from being stuck during the movement. At the same time, a drag chain 8 is set on the side of the movable rail 2 adjacent to the floating assembly 5 to limit the relative position between the base 1 and the movable rail 2, so that the movable rail 2 can reciprocate better along the front and rear directions.

[0076] The following describes the working process of the logistics trolley switching device 100 according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0077] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when the driving motor 33 drives the active wheel 34 to rotate, the driven wheel 35 can be rotated under the transmission action of the transmission belt 36, and the driven wheel 35 can drive the screw 31 to rotate. When the screw 31 tilts during assembly or use, the bearing seats 4 at both ends of the screw 31 can be adjusted so that the screw 31 meets the transmission requirements, which can prevent the screw 31 from being stuck and being damaged. Furthermore, when the driving motor 33 drives the lead screw 31 to rotate, the movable track 2 can move in the front-to-back direction, for example, the movable track 2 moves from front to back, or the movable track 2 moves from back to front. At this time, since the first connecting plate 53 and the first frame 51 can move relatively, and the second connecting plate 61 and the nut 32 can move relatively, the lower ends of the left and right sides of the movable track 2 can be flexibly adjusted to their relative positions, so that the movable track 2 is not easily stuck by the movable block 7 during the reciprocating movement in the front-to-back direction. In addition, during the movement of the movable track 2 in the front-to-back direction, the floating assembly 5 arranged between the movable track 2 and the base 1 can make one side of the movable track 2 move freely, so that the movable track 2 is not easily stuck.

[0078] Therefore, in summary, there are multiple movable connecting parts with high degrees of freedom (such as bearing seat 4, floating assembly 5, movable block 7) between the movable rail 2 and the base 1, which can make the movable rail 2 not easily stuck during the movement. At the same time, it also makes the transmission structure such as the screw 31 reduce its processing accuracy and installation difficulty, simple installation and operation, strong practicality, and can also improve transportation efficiency.

[0079] Other structures and operations of the logistics trolley transfer device 100 according to the embodiment of the present invention are known to ordinary technicians in the field and will not be described in detail here.

[0080] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A logistics trolley transfer device, characterized in that: include: A base, a movable track and a lead screw and nut assembly, wherein the lead screw and nut assembly comprises a lead screw and a nut, wherein the lead screw is arranged on the base and the nut is arranged on the movable track; A bearing seat, wherein both ends of the lead screw are respectively mounted on the base through the bearing seat, the bearing seat comprises a first inner shaft and a first outer shaft, the first inner shaft is sleeved on the lead screw, the first outer shaft is fixedly connected to the base, the lead screw rotates relative to the first inner shaft or the first outer shaft around the lead screw axis in a first rotation direction, and the first inner shaft rotates relative to the first outer shaft around a straight line perpendicular to the lead screw axis in a second rotation direction, A floating assembly is arranged between the moving track and the base, and comprises: a first frame and a floating block, wherein the first frame is fixedly connected to the base, and a slide groove extending along the axis direction of the lead screw is formed on the first frame; the floating block is connected to the moving track, and the floating block cooperates with the slide groove and can move relative to the slide groove in a direction perpendicular to the axis direction of the lead screw; The slide rail assembly is arranged between the movable rail and the base, and includes: a second connecting plate and a second frame, the second connecting plate is fixedly connected to the movable rail, a slider is formed on the second connecting plate, and a slide rail cooperating with the slider is formed on the second frame, and the slide rail extends along the axis direction of the lead screw. The slide rail assembly further includes: a movable block, which is arranged between the second upper connecting plate and the nut, and includes: a nut seat, a connecting bearing and a guide rod, wherein the nut seat is fixedly connected to the nut; the connecting bearing is fixedly connected to the second connecting plate; one end of the guide rod is matched with the nut seat, and the other end of the guide rod is rotatably arranged in the connecting bearing; The connecting bearing comprises a second inner shaft and a second outer shaft, wherein the second inner shaft and the second outer shaft are adapted to rotate around an axis perpendicular to the second outer shaft, wherein the second inner shaft cooperates with the guide rod, and the second outer shaft cooperates with the second connecting plate.

2. The logistics trolley transfer device according to claim 1 is characterized in that: In the second rotation direction, the inner wall of the first outer shaft is formed with a first arc surface and / or a second arc surface, and the first inner shaft rotates along the first arc surface or the first inner shaft rotates along the second arc surface.

3. The logistics trolley switching device according to claim 1 is characterized in that: The floating assembly also includes: A first connecting plate, fixedly connected to the movable track; a first mounting block, fixed on the first connecting plate; The second mounting block is connected to the first mounting block to constrain the floating block between the first mounting block and the second mounting block.

4. The logistics trolley transfer device according to claim 1 is characterized in that: The floating assembly is arranged on at least one side of the moving track which is perpendicular to the straight line direction where the lead screw axis is located.

5. The logistics trolley transfer device according to claim 1 is characterized in that: The floating assembly is arranged on one side of the moving track perpendicular to the linear direction of the screw axis, and the slide rail assembly is arranged on the other side of the moving track perpendicular to the linear direction of the screw axis.

6. The logistics trolley transfer device according to claim 1 is characterized in that: The guide rod and the nut seat, and / or the guide rod and the connecting bearing are suitable for relative sliding along the axial direction of the guide rod.

7. The logistics trolley switching device according to claim 1 is characterized in that: Also includes: A drag chain, one end of which is fixedly connected to the base, and the other end of which is fixedly connected to the moving track.

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