CN116332087A - Fork subassembly and shuttle - Google Patents

Abstract

The invention discloses a fork assembly and a shuttle. The fork subassembly includes fixed fork, remove fork, middle layer board and twice journey mechanism, remove fork and fixed fork interval setting in first direction, middle layer board movably sets up between fixed fork and removal fork, initial interval between middle layer board and the fixed fork equals the initial interval between middle layer board and the removal fork, twice journey mechanism includes the swing arm and just equidistant pivot, first slider and the second slider of establishing on the swing arm in proper order, first slider sliding connection is on middle layer board, pivot rotation is connected on one of fixed fork and removal fork, second slider sliding connection is on another. The double-stroke mechanism of the fork assembly is simple in structure and stable in double-stroke relation, so that the middle supporting plate is always positioned at the middle position of the movable fork and the fixed fork, and the supporting effect of the middle supporting plate on articles is improved.

Description

Fork subassembly and shuttle

Technical Field

The invention relates to the technical field of logistics equipment, in particular to a fork assembly and a shuttle.

Background

Shuttle is a common logistics device that is primarily used to effect the transport and transfer of items. Currently, there are pitch-changing shuttles that can change the width of the load-bearing space, including fixed pallets and moving forks that can move relative to the fixed forks. In addition, an intermediate pallet needs to be provided between the fixed fork and the movable fork in the following two cases: one of the cases is that the plastic turnover box is wide and needs to be supported by the middle supporting plate to prevent the middle part of the container from sagging and protruding; another case is in order to utilize the middle layer board to support in order to prevent the sagging of the former package intermediate joint seam of carton when transporting the carton to avoid appearing getting the condition that the damage packing box that hammer part and goods shelves track scratch lead to when getting put goods can't get put goods even.

Since the moving fork has a moving property, in order to maintain the intermediate pallet at the center positions of the moving fork and the fixed fork, it is necessary to move the intermediate pallet simultaneously with the moving fork, and the moving distance of the intermediate pallet is always maintained at half the moving distance of the moving fork. The existing shuttle generally adopts a synchronous belt mechanism as a double-stroke structure, but the synchronous belt is complex in mechanism and easy to slip, so that the double-stroke relationship is destroyed, and finally the middle supporting plate is not positioned at the middle position of the two forks.

Disclosure of Invention

The first object of the present invention is to provide a pallet fork assembly, which has a simple structure and good stability of a double-stroke mechanism, so that the middle pallet is always located at the middle position of the movable pallet fork and the fixed pallet fork, and the supporting effect of the middle pallet on the articles is improved.

To achieve the purpose, the invention adopts the following technical scheme:

a fork assembly comprising: fixing the fork; the movable fork is arranged at intervals in a first direction, and can move along the first direction towards a direction close to or far from the fixed fork; an intermediate pallet movably disposed between the fixed pallet fork and the movable pallet fork, and an initial spacing between the intermediate pallet and the fixed pallet fork is equal to an initial spacing between the intermediate pallet and the movable pallet fork; the double-stroke mechanism comprises a swing arm, a rotating shaft, a first sliding piece and a second sliding piece, wherein the rotating shaft, the first sliding piece and the second sliding piece are sequentially and equidistantly arranged on the swing arm in a protruding mode, the first sliding piece is connected to the middle supporting plate in a sliding mode, the rotating shaft is connected to one of the fixed fork and the movable fork in a rotating mode, and the second sliding piece is connected to the other of the fixed fork and the movable fork in a sliding mode.

Preferably, the double-stroke mechanism comprises two swing arms, the two swing arms are crossed and rotationally connected, the rotating connection part of the two swing arms is connected with a first sliding piece, and two ends of each swing arm are respectively connected with a rotating shaft and a second sliding piece; the middle supporting plate is provided with a first sliding groove, and the first sliding piece is connected in the first sliding groove in a sliding way; the fixed fork and the movable fork are respectively provided with a second chute and a rotating shaft hole at intervals, the two rotating shafts are in one-to-one correspondence and are in rotary connection with the two rotating shaft holes, and the two second sliding parts are in one-to-one correspondence and are in sliding connection with the two second chutes.

Preferably, the double-stroke mechanism comprises two swing arms, the end parts of the two swing arms are in rotary connection through one rotating shaft, and each swing arm is convexly provided with one first sliding piece and one second sliding piece; the middle supporting plate is provided with two first sliding grooves, and the two first sliding parts are correspondingly and slidably connected in the two first sliding grooves one by one; one of the fixed fork and the movable fork is provided with a rotating shaft hole, and the rotating shaft is rotatably connected in the rotating shaft hole; two second sliding grooves are formed in the other one of the fixed fork and the movable fork, and the two second sliding parts are correspondingly and movably connected in the two second sliding grooves one by one.

Preferably, the penetrating end of the rotating shaft is fixedly connected with a first limit gland.

Preferably, the first sliding piece comprises a first limiting part and a first penetrating part, the first limiting part is limited at one side of the first sliding groove, the first penetrating part penetrates through the first sliding groove to be arranged, and one end, far away from the first limiting part, of the first penetrating part is fixedly connected with a second limiting gland; and/or, the second sliding piece comprises a second limiting part and a second penetrating part, the second limiting part is limited at one side of the second sliding groove, the second penetrating part penetrates through the second sliding groove to be arranged, and one end, away from the second limiting part, of the second penetrating part is fixedly connected with a third limiting gland.

Preferably, the first sliding groove comprises a first groove and a second groove which are connected in a stepped manner, the size of the first limiting part is smaller than the width of the first groove and larger than the width of the second groove, the first limiting part is arranged in the first groove, and the first penetrating part penetrates through the second groove; and/or, the second sliding groove comprises a third groove and a fourth groove which are connected in a step shape, the size of the second limiting part is smaller than the width of the third groove and larger than the width of the fourth groove, the second limiting part is arranged in the third groove, and the second penetrating part penetrates through the fourth groove.

Preferably, the first chute and the second chute are both arranged along a second direction, and the second direction is perpendicular to the first direction.

Preferably, the length of the second chute is twice the length of the first chute.

Preferably, the first sliding groove and the second sliding groove are both kidney-shaped grooves.

The second object of the invention is to provide a shuttle, wherein the middle supporting plate of the shuttle is always positioned in the middle position of the movable fork and the fixed fork, so that the articles are well supported in the transportation process, and the deformation or even damage of the articles is not easy to occur.

To achieve the purpose, the invention adopts the following technical scheme:

the shuttle comprises a vehicle body and the fork assembly, wherein the fork assembly is arranged on the vehicle body.

The invention has the beneficial effects that:

the invention provides a fork assembly which comprises a fixed fork, a movable fork, an intermediate pallet and a double-stroke mechanism, wherein the movable fork and the fixed fork are arranged at intervals in a first direction, the movable fork can move along the first direction towards a direction close to or far away from the fixed fork, the intermediate pallet is movably arranged between the fixed fork and the movable fork, the initial distance between the intermediate pallet and the fixed fork is equal to the initial distance between the intermediate pallet and the movable fork, the double-stroke mechanism comprises a swing arm, a rotating shaft, a first sliding piece and a second sliding piece, the rotating shaft, the first sliding piece and the second sliding piece are sequentially and equidistantly arranged on the swing arm in a protruding mode, the first sliding piece is connected to the intermediate pallet in a sliding mode, the rotating shaft is connected to one of the fixed fork and the movable fork in a sliding mode, and the second sliding piece is connected to the other of the fixed fork and the movable fork in a sliding mode. The double-stroke mechanism of the fork assembly is simple in structure, and the double-stroke relation between the movable fork and the middle supporting plate is stable, so that the middle supporting plate is always positioned at the middle position of the movable fork and the fixed fork, and the supporting effect of the middle supporting plate on articles is improved.

Drawings

Fig. 1 is a schematic view of a shuttle according to an embodiment of the present invention under a certain view angle;

fig. 2 is a schematic view of a shuttle according to an embodiment of the present disclosure at another view angle;

FIG. 3 is a schematic view of a fork assembly of a shuttle according to an embodiment of the present invention;

FIG. 4 is a schematic view of a two-stroke mechanism of a fork assembly according to an embodiment of the present invention at a certain viewing angle;

FIG. 5 is a schematic view of a two-stroke mechanism of a fork assembly according to an embodiment of the present invention in another view;

FIG. 6 is a cross-sectional view taken along the direction A-A in FIG. 5;

FIG. 7 is an enlarged view of portion B of FIG. 6;

FIG. 8 is an enlarged view of portion C of FIG. 6;

fig. 9 is a schematic diagram of a shuttle according to a second embodiment of the present invention under a certain view angle;

fig. 10 is a schematic diagram of a shuttle according to a second embodiment of the present disclosure under another view angle;

FIG. 11 is a schematic view of a fork assembly of a shuttle according to a second embodiment of the present invention;

FIG. 12 is a schematic view of a two-stroke mechanism of a fork assembly according to a second embodiment of the present invention;

FIG. 13 is a cross-sectional view taken along the direction D-D in FIG. 12;

fig. 14 is an enlarged view of the portion E in fig. 13;

fig. 15 is a schematic view of a first chute according to a first embodiment and a second embodiment of the present invention;

fig. 16 is a schematic view of a second chute according to the first and second embodiments of the present invention;

fig. 17 is a schematic diagram of a second sliding member according to the first and second embodiments of the present invention.

In the figure:

100. a fork assembly; 110. fixing the fork; 120. moving the fork; 130. a middle supporting plate;

140. a double-pass mechanism; 141. swing arms; 142. a rotating shaft; 1421. a limit cap; 1422. a shaft body; 143. a first slider; 1431. a first limit part; 1432. a first penetrating portion; 144. a second slider; 1441. a second limit part; 1442. a second penetrating portion; 150. a first chute; 151. a first groove; 152. a second groove; 160. a second chute; 161. a third groove; 162. a fourth groove; 171. a first limit gland; 172. the second limit gland; 173. a third limit gland; 181. a first locking screw; 182. a second locking screw; 183. a third locking screw;

200. a vehicle body;

300. a driving mechanism.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2, 9 and 10, the present invention provides a fork assembly 100, which fork assembly 100 is used on a shuttle for supporting an item that the shuttle is required to transport and transfer. Of course, the fork assembly 100 can be used in other mobile devices other than on a shuttle, and will not be described in detail herein. The following description will take the fork assembly 100 as an example for use with a shuttle.

As shown in fig. 1-17, the fork assembly 100 includes a fixed fork 110, a movable fork 120, an intermediate pallet 130, and a two-stroke mechanism 140. The fixed fork 110 is fixedly disposed on the body 200 of the shuttle, the movable fork 120 is movably disposed on the body 200 of the shuttle, the movable fork 120 and the fixed fork 110 are spaced apart in a first direction, and the movable fork 120 can be moved in a direction approaching or departing from the fixed fork 110 in the first direction. In some embodiments, the first direction is a length direction of the shuttle. The intermediate pallet 130 is movably disposed between the fixed pallet fork 110 and the movable pallet fork 120, and an initial interval between the intermediate pallet 130 and the fixed pallet fork 110 is equal to an initial interval between the intermediate pallet 130 and the movable pallet fork 120, such that the intermediate pallet 130 is located at the very middle between the fixed pallet 110 and the movable pallet fork 120. The double-pass mechanism 140 includes a swing arm 141, and a rotating shaft 142, a first sliding member 143 and a second sliding member 144 sequentially and equidistantly protruding on the swing arm 141, wherein the first sliding member 143 is slidably connected to the middle pallet 130, the rotating shaft 142 is rotatably connected to one of the fixed fork 110 and the movable fork 120, and the second sliding member 144 is slidably connected to the other of the fixed fork 110 and the movable fork 120.

The moving fork 120 can be moved toward or away from the fixed fork 110 in a first direction by the drive mechanism 300 of the shuttle. In the moving process of the moving fork 120, the swing arm 141 swings with the rotation shaft 142 as a rotation center, and at the same time, the first slider 143 slides with respect to the middle pallet 130, the second slider 144 slides with respect to the fixed fork 110 or the moving fork 120, and since the distance between the second slider 144 and the rotation shaft 142 is twice as long as the distance between the first slider 143 and the rotation shaft 142, the sliding distance of the second slider 144 is twice as long as the sliding distance of the first slider 143, so that the middle pallet 130 can move synchronously with the moving fork 120, and in the first direction, the moving fork 120 moves twice as long as the moving distance of the middle pallet 130, so that the middle pallet 130 is always at the middle position between the fixed fork 110 and the moving fork 120.

In some embodiments, as shown in fig. 1 to 5, the double-stroke mechanism 140 is a scissor arm structure, specifically, the double-stroke mechanism 140 includes two swing arms 141, the two swing arms 141 are crossed and rotationally connected, a first sliding member 143 is connected to a rotational connection position of the two swing arms 141, and two ends of each swing arm 141 are respectively connected to a rotating shaft 142 and a second sliding member 144. That is, two swing arms 141 share one first slider 143, and one rotation shaft 142 and one second slider 144 are provided on each swing arm 141 on both sides of the rotation shaft 142.

Correspondingly, a first sliding groove 150 is provided on the middle supporting plate 130, and the first sliding piece 143 is slidably connected in the first sliding groove 150. The fixed fork 110 and the movable fork 120 are respectively provided with a second chute 160 and a rotating shaft hole at intervals, and the second chute 160 and the rotating shaft hole are specifically arranged on the guide plate of the fixed fork 110 or the movable fork 120. In some embodiments, the second runner 160 and the pivot hole are spaced apart in a second direction perpendicular to the first direction on the same fork. The two rotating shafts 142 of the two swing arms 141 are rotatably connected in the two rotating shaft holes in a one-to-one correspondence manner, and the two second sliding members 144 are slidably connected in the two second sliding grooves 160 in a one-to-one correspondence manner.

The stability that the movable fork 120 drives the middle supporting plate 130 to synchronously move can be improved, so that the double-stroke relation between the movable fork 120 and the middle supporting plate 130 is stable, and errors are not easy to occur. It should be noted that, the two spindle holes are disposed opposite to each other with respect to the middle supporting plate 130, and the two second sliding grooves 160 are disposed opposite to each other with respect to the middle supporting plate 130.

In some other embodiments, as shown in fig. 9 to 12, the double-stroke mechanism 140 is a triangle link double-stroke structure, specifically, the double-stroke mechanism 140 includes two swing arms 141, the ends of the two swing arms 141 are rotatably connected by a rotating shaft 142, and a first sliding member 143 and a second sliding member 144 are convexly disposed on each swing arm 141. That is, the two swing arms 141 share one rotation shaft 142.

Correspondingly, the middle supporting plate 130 is provided with two first sliding grooves 150, and the two first sliding pieces 143 are slidably connected in the two first sliding grooves 150 in a one-to-one correspondence manner. One of the fixed fork 110 and the movable fork 120 is provided with a rotation shaft hole in which the rotation shaft 142 is rotatably coupled. Two second sliding grooves 160 are arranged on the other of the fixed fork 110 and the movable fork 120, and the two second sliding pieces 144 are movably connected in the two second sliding grooves 160 in a one-to-one correspondence manner. The stability that the movable fork 120 drives the middle supporting plate 130 to synchronously move can be improved, so that the double-stroke relation between the movable fork 120 and the middle supporting plate 130 is stable, and errors are not easy to occur.

In some embodiments, a pivot hole is provided on the fixed fork 110, and a pivot 142 common to the two swing arms 141 is rotatably connected in the pivot hole; two second sliding grooves 160 are arranged on the movable fork 120 at intervals, and two second sliding pieces 144 of the two swing arms 141 are correspondingly and slidably connected in the two second sliding grooves 160 one by one.

In some embodiments, a pivot hole is provided on the movable fork 120, and a pivot 142 common to the two swing arms 141 is rotatably connected in the pivot hole; two second sliding grooves 160 are arranged on the fixed fork 110 at intervals, and two second sliding pieces 144 of the two swing arms 141 are correspondingly and slidably connected in the two second sliding grooves 160 one by one.

With continued reference to fig. 5 and 12, the first chute 150 and the second chute 160 each extend in a second direction, which is perpendicular to the first direction. With continued reference to fig. 12, when the number of the first sliding grooves 150 or the second sliding grooves 160 is two, the two first sliding grooves 150 are spaced apart in the second direction, and the two second sliding grooves 160 are also spaced apart in the second direction.

In some embodiments, as shown in fig. 12, the fork assembly 100 has two first runners 150 and two second runners 160, with a spacing between the two first runners 150 that is greater than a spacing between the two first runners 150. In some particular embodiments, the spacing between two first runners 150 is twice the spacing between two first runners 150. Such that when the moving fork 120 is not moving, the two first sliding members 143 respectively abut the inner ends of the two first sliding grooves 150, and the two second sliding members 144 respectively abut the inner ends of the two second sliding grooves 160. It should be noted that, the inner end herein refers to an end of the first chute 150 near the center of the middle pallet 130, and an end of the second chute 160 near the center of the moving fork 120.

With continued reference to fig. 12, the length of the second runner 160 is twice the length of the first runner 150. This arrangement makes it possible to limit the maximum moving distance of the moving fork 120 and the intermediate pallet 130, and to prevent the moving fork 120 and the intermediate pallet 130 from being excessively moved to cause crushing damage to the articles interposed between the moving fork 120 and the fixed fork 110.

With continued reference to fig. 5 and 12, the first chute 150 and the second chute 160 are both kidney-shaped slots. Of course, in other embodiments, the first chute 150 and the second chute 160 may be configured as rectangular holes or elongated holes of other shapes as desired.

The shaft 142 needs to be fixed through the shaft hole to avoid the shaft 142 from being separated from the shaft hole, as shown in fig. 6 and 8, the penetrating end of the shaft 142 is fixedly connected with a first limiting gland 171, and the fixing connection manner includes but is not limited to screw fixing, bonding, and the like. In some embodiments, the rotating shaft 142 includes a shaft body 1422 and a limiting cap 1421 that are connected to each other, the size of the limiting cap 1421 is larger than the size of the shaft body 1422 and larger than the size of the rotating shaft hole, the shaft body 1422 passes through a rotating shaft hole formed on the fixed fork 110 or the movable fork 120 and then passes through a first assembly hole formed on the swing arm 141, the first limiting gland 171 is fixedly connected to the end face of the penetrating end of the shaft body 1422 through a first locking screw 181, and the size of the first limiting gland 171 is larger than the size of the first assembly hole, so that the rotating shaft 142 cannot be separated from the rotating shaft hole and the first assembly hole, and the connection strength is improved.

As shown in fig. 13 and 14, the first sliding member 143 needs to be fixed after passing through the first sliding slot 150, so as to avoid the first sliding member 143 from being separated from the first sliding slot 150. Specifically, the first sliding member 143 includes a first limiting portion 1431 and a first penetrating portion 1432, the size of the first limiting portion 1431 is greater than the width of the first sliding groove 150, the size of the first penetrating portion 1432 is smaller than the size of the first sliding groove 150, the first penetrating portion 1432 is disposed through the first sliding groove 150, one end of the first penetrating portion 1432 away from the first limiting portion 1431 is fixedly connected with the second limiting gland 172, and the fixing connection manner includes, but is not limited to, screw fixing, bonding, and the like. That is, the first stopper 1431 and the second stopper cover 172 are stopped at both sides of two structures to be connected.

In some embodiments, as shown in fig. 15, the first chute 150 includes a first chute 151 and a second chute 152 connected in a stepped shape, and the first stopper 1431 has a size smaller than the width of the first chute 151 and larger than the width of the second chute 152. When the first sliding member 143 passes through the first sliding groove 150, the first limiting portion 1431 is disposed in the first groove 151, the first penetrating portion 1432 passes through the second groove 152 and then passes through the second assembly hole formed in the swing arm 141, the second limiting gland 172 is fixedly connected to the end face of the first penetrating portion 1432 by the second locking screw 182, and the size of the second limiting gland 172 is greater than the size of the second assembly hole, so that the first sliding member 143 cannot be separated from the first sliding groove 150 and the second assembly hole, and the connection strength is improved.

As shown in fig. 6 and 7, the second sliding member 144 needs to be fixed after passing through the second sliding slot 160, so as to prevent the second sliding member 144 from being separated from the second sliding slot 160. Specifically, as shown in fig. 17, the second sliding member 144 includes a second limiting portion 1441 and a second penetrating portion 1442, where the size of the second limiting portion 1441 is greater than the width of the second chute 160, the size of the second penetrating portion 1442 is smaller than the size of the second chute 160, the second penetrating portion 1442 is disposed through the second chute 160, and one end of the second penetrating portion 1442 away from the second limiting portion 1441 is fixedly connected with the third limiting gland 173. That is, the second stopper 1441 and the third stopper 173 are limited to both sides of two structures to be connected.

In some embodiments, as shown in fig. 16, the second chute 160 includes a third slot 161 and a fourth slot 162 connected in a stepped shape, and the second limiting portion 1441 has a size smaller than the width of the third slot 161 and larger than the width of the fourth slot 162. When the second sliding member 144 passes through the second sliding slot 160, the second limiting portion 1441 is disposed in the third slot 161, the second penetrating portion 1442 passes through the fourth slot 162 and then passes through the third assembly hole formed in the swing arm 141, the third limiting gland 173 is fixedly connected to the end surface of the second penetrating portion 1442 by the third locking screw 183, and the size of the third limiting gland 173 is larger than the size of the third assembly hole, so that the second sliding member 144 cannot be separated from the second sliding slot 160 and the third assembly hole, and the connection strength is improved.

Embodiment one:

as shown in fig. 1 to 8 and 15 to 17, the present embodiment provides a fork assembly 100, and the fork assembly 100 includes a fixed fork 110, a movable fork 120, an intermediate pallet 130, and a double-throw mechanism 140. The fixed fork 110 is fixedly disposed on the body 200 of the shuttle, the movable fork 120 is movably disposed on the body 200 of the shuttle, and the movable fork 120 and the fixed fork 110 are disposed at intervals in a first direction, and the movable fork 120 can move in a direction toward or away from the fixed fork 110 in the first direction, which is a length direction of the shuttle. The intermediate pallet 130 is movably disposed between the fixed pallet fork 110 and the movable pallet fork 120, and an initial spacing between the intermediate pallet 130 and the fixed pallet fork 110 is equal to an initial spacing between the intermediate pallet 130 and the movable pallet fork 120.

The double-stroke mechanism 140 is a scissor arm structure, specifically, the double-stroke mechanism 140 includes two swing arms 141, the two swing arms 141 are crossed and rotationally connected, a first sliding member 143 is commonly used at the rotational connection position of the two swing arms 141, and two ends of each swing arm 141 are respectively connected with a rotating shaft 142 and a second sliding member 144. A first sliding groove 150 is provided on the middle supporting plate 130, the first sliding groove 150 is a kidney-shaped groove, and the first sliding piece 143 is slidably connected in the first sliding groove 150. A second sliding groove 160 and a rotating shaft hole are arranged on the guide plate of the fixed fork 110 and the guide plate of the movable fork 120 at intervals along a second direction, the second direction is perpendicular to the first direction, the second sliding groove 160 is a kidney-shaped groove, and the length of the second sliding groove 160 is twice that of the first sliding groove 150. The two spindle holes are disposed opposite each other with respect to the middle pallet 130, and the two second sliding grooves 160 are disposed opposite each other with respect to the middle pallet 130. The two rotating shafts 142 of the two swing arms 141 are rotatably connected in the two rotating shaft holes in a one-to-one correspondence manner, and the two second sliding members 144 are slidably connected in the two second sliding grooves 160 in a one-to-one correspondence manner.

The rotating shaft 142 includes a shaft body 1422 and a limiting cap 1421, which are connected to each other, the size of the limiting cap 1421 is larger than the size of the shaft body 1422 and larger than the size of the rotating shaft hole, the shaft body 1422 passes through a first assembly hole formed in the swing arm 141 after passing through a rotating shaft hole formed in the fixed fork 110 or the movable fork 120, the first limiting gland 171 is fixedly connected to the end surface of the penetrating end of the shaft body 1422 through a first locking screw 181, and the size of the first limiting gland 171 is larger than the size of the first assembly hole, so that the rotating shaft 142 cannot be separated from the rotating shaft hole and the first assembly hole, and the connection strength is improved.

The first sliding groove 150 includes a first groove 151 and a second groove 152 that are connected in a stepped manner, the first sliding piece 143 includes a first limiting portion 1431 and a first penetrating portion 1432, the size of the first limiting portion 1431 is smaller than the width of the first groove 151 and larger than the width of the second groove 152, the size of the first penetrating portion 1432 is smaller than the width of the second groove 152, the first limiting portion 1431 is disposed in the first groove 151, the first penetrating portion 1432 penetrates through the second groove 152 and then penetrates through a second assembly hole formed in the swing arm 141, and the second limiting gland 172 is fixedly connected to the end face of the first penetrating portion 1432 through the second locking screw 182.

The second sliding chute 160 includes a third groove 161 and a fourth groove 162 that are connected in a stepped manner, the second sliding member 144 includes a second limiting portion 1441 and a second penetrating portion 1442, the size of the second limiting portion 1441 is smaller than the width of the third groove 161 and larger than the width of the fourth groove 162, the size of the second penetrating portion 1442 is smaller than the width of the fourth groove 162, the second limiting portion 1441 is disposed in the third groove 161, the second penetrating portion 1442 penetrates through the fourth groove 162 and then penetrates through a third assembly hole formed in the swing arm 141, and the third limiting gland 173 is fixedly connected to an end face of the second penetrating portion 1442 through a third locking screw 183.

Embodiment two:

as shown in fig. 9 to 17, the present embodiment provides a fork assembly 100, and the fork assembly 100 includes a fixed fork 110, a movable fork 120, an intermediate pallet 130, and a double pass mechanism 140. The fixed fork 110 is fixedly disposed on the body 200 of the shuttle, the movable fork 120 is movably disposed on the body 200 of the shuttle, and the movable fork 120 and the fixed fork 110 are disposed at intervals in a first direction, and the movable fork 120 can move in a direction toward or away from the fixed fork 110 in the first direction, which is a length direction of the shuttle. The intermediate pallet 130 is movably disposed between the fixed pallet fork 110 and the movable pallet fork 120, and an initial spacing between the intermediate pallet 130 and the fixed pallet fork 110 is equal to an initial spacing between the intermediate pallet 130 and the movable pallet fork 120.

The double-stroke mechanism 140 is a triangle link double-stroke structure, specifically, the double-stroke mechanism 140 includes two swing arms 141, the ends of the two swing arms 141 are rotatably connected through a common rotating shaft 142, and each swing arm 141 is convexly provided with a first sliding member 143 and a second sliding member 144. I.e. the two swing arms 141 share one rotation shaft 142. Two first sliding grooves 150 are arranged on the middle supporting plate 130 along the second direction, the second direction is perpendicular to the first direction, the first sliding grooves 150 are waist-shaped grooves, and the two first sliding pieces 143 are correspondingly and slidably connected in the two first sliding grooves 150 one by one. A rotation shaft hole is provided on the fixed fork 110, and a rotation shaft 142 common to the two swing arms 141 is rotatably coupled in the rotation shaft hole. Two second sliding grooves 160 are arranged on the movable fork 120 along the second direction at intervals, the second sliding grooves 160 are waist-shaped grooves, the length of each second sliding groove 160 is twice that of the corresponding first sliding groove 150, and two second sliding pieces 144 of the two swing arms 141 are correspondingly and slidably connected in the two second sliding grooves 160 one by one. The interval between the two first sliding grooves 150 is twice as large as the interval between the two first sliding grooves 150.

The rotating shaft 142 includes a shaft body 1422 and a limiting cap 1421, which are connected to each other, the size of the limiting cap 1421 is greater than the size of the shaft body 1422 and greater than the size of the rotating shaft hole, the shaft body 1422 passes through the rotating shaft hole formed on the fixed fork 110 and then passes through the first assembly hole formed on the swing arm 141, the first limiting gland 171 is fixedly connected to the end surface of the penetrating end of the shaft body 1422 through the first locking screw 181, and the size of the first limiting gland 171 is greater than the size of the first assembly hole, so that the rotating shaft 142 cannot be separated from the rotating shaft hole and the first assembly hole, and the connection strength is improved.

The first sliding groove 150 includes a first groove 151 and a second groove 152 that are connected in a stepped manner, the first sliding piece 143 includes a first limiting portion 1431 and a first penetrating portion 1432, the size of the first limiting portion 1431 is smaller than the width of the first groove 151 and larger than the width of the second groove 152, the size of the first penetrating portion 1432 is smaller than the width of the second groove 152, the first limiting portion 1431 is disposed in the first groove 151, the first penetrating portion 1432 penetrates through the second groove 152 and then penetrates through a second assembly hole formed in the swing arm 141, and the second limiting gland 172 is fixedly connected to the end face of the first penetrating portion 1432 through the second locking screw 182.

The second sliding chute 160 includes a third groove 161 and a fourth groove 162 that are connected in a stepped manner, the second sliding member 144 includes a second limiting portion 1441 and a second penetrating portion 1442, the size of the second limiting portion 1441 is smaller than the width of the third groove 161 and larger than the width of the fourth groove 162, the size of the second penetrating portion 1442 is smaller than the width of the fourth groove 162, the second limiting portion 1441 is disposed in the third groove 161, the second penetrating portion 1442 penetrates through the fourth groove 162 and then penetrates through a third assembly hole formed in the swing arm 141, and the third limiting gland 173 is fixedly connected to an end face of the second penetrating portion 1442 through a third locking screw 183.

The invention also discloses a shuttle which comprises a vehicle body 200, a driving mechanism 300 and the fork assembly 100, wherein the fork assembly 100 is arranged on the vehicle body 200, and the driving mechanism 300 is used for driving the movable supporting plate to move along the first direction. The driving mechanism 300 can select and use a combination of a motor and a synchronous belt mechanism according to requirements, and of course, other existing structures capable of outputting linear motion can be used, and details are omitted herein.

The shuttle can enable the middle supporting plate 130 to be always positioned in the middle between the fixed supporting plate and the movable supporting plate by using the fork assembly 100, so that the supporting effect on articles is improved, and the deformation or abrasion of the articles is avoided.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

1. A fork assembly, comprising:

a fixed fork (110);

a movable fork (120), wherein the movable fork (120) and the fixed fork (110) are arranged at intervals in a first direction, and the movable fork (120) can move along the first direction towards a direction approaching or separating from the fixed fork (110);

an intermediate pallet (130), the intermediate pallet (130) being movably disposed between the fixed pallet fork (110) and the movable pallet fork (120), and an initial spacing between the intermediate pallet (130) and the fixed pallet fork (110) being equal to an initial spacing between the intermediate pallet (130) and the movable pallet fork (120);

the double-stroke mechanism (140), double-stroke mechanism (140) include swing arm (141) and just equidistant protruding establish in proper order pivot (142), first slider (143) and second slider (144) on swing arm (141), first slider (143) sliding connection be in on middle layer board (130), pivot (142) rotate connect fixed fork (110) with remove on one of fork (120), second slider (144) sliding connection be in on the other of fixed fork (110) with remove fork (120).

2. The fork assembly of claim 1, wherein,

the double-stroke mechanism (140) comprises two swing arms (141), the two swing arms (141) are connected in a crossed and rotary mode, a first sliding piece (143) is connected to the rotary joint of the two swing arms (141), and two ends of each swing arm (141) are respectively connected with a rotating shaft (142) and a second sliding piece (144);

the middle supporting plate (130) is provided with a first sliding groove (150), and the first sliding piece (143) is connected in the first sliding groove (150) in a sliding way;

the fixed fork (110) and the movable fork (120) are respectively provided with a second chute (160) and a rotating shaft hole at intervals, the two rotating shafts (142) are rotatably connected in the two rotating shaft holes in a one-to-one correspondence manner, and the two second sliding parts (144) are slidably connected in the two second chutes (160) in a one-to-one correspondence manner.

3. The fork assembly of claim 1, wherein,

the double-stroke mechanism (140) comprises two swing arms (141), the end parts of the two swing arms (141) are in rotary connection through a rotating shaft (142), and each swing arm (141) is convexly provided with a first sliding piece (143) and a second sliding piece (144);

the middle supporting plate (130) is provided with two first sliding grooves (150), and the two first sliding parts (143) are correspondingly and slidably connected in the two first sliding grooves (150);

one of the fixed fork (110) and the movable fork (120) is provided with a rotating shaft hole, and the rotating shaft (142) is rotatably connected in the rotating shaft hole;

two second sliding grooves (160) are formed in the other one of the fixed fork (110) and the movable fork (120), and the two second sliding pieces (144) are movably connected in the two second sliding grooves (160) in a one-to-one correspondence mode.

4. A pallet fork assembly according to claim 2 or 3, wherein,

the penetrating end of the rotating shaft (142) is fixedly connected with a first limit gland (171).

5. A pallet fork assembly according to claim 2 or 3, wherein,

the first sliding piece (143) comprises a first limiting part (1431) and a first penetrating part (1432), the first limiting part (1431) is limited on one side of the first sliding groove (150), the first penetrating part (1432) penetrates through the first sliding groove (150), and one end, far away from the first limiting part (1431), of the first penetrating part (1432) is fixedly connected with a second limiting gland (172); and/or the number of the groups of groups,

the second sliding piece (144) comprises a second limiting part (1441) and a second penetrating part (1442), the second limiting part (1441) is limited on one side of the second sliding groove (160), the second penetrating part (1442) penetrates through the second sliding groove (160) to be arranged, and one end, away from the second limiting part (1441), of the second penetrating part (1442) is fixedly connected with a third limiting gland (173).

6. The fork assembly as recited in claim 5, wherein,

the first sliding groove (150) comprises a first groove (151) and a second groove (152) which are connected in a stepped mode, the size of the first limiting part (1431) is smaller than the width of the first groove (151) and larger than the width of the second groove (152), the first limiting part (1431) is arranged in the first groove (151), and the first penetrating part (1432) penetrates through the second groove (152); and/or the number of the groups of groups,

the second sliding groove (160) comprises a third groove (161) and a fourth groove (162) which are connected in a stepped mode, the size of the second limiting part (1441) is smaller than the width of the third groove (161) and larger than the width of the fourth groove (162), the second limiting part (1441) is arranged in the third groove (161), and the second penetrating part (1442) penetrates through the fourth groove (162).

7. A pallet fork assembly according to claim 2 or 3, wherein,

the first sliding groove (150) and the second sliding groove (160) are arranged in an extending mode along a second direction, and the second direction is perpendicular to the first direction.

8. A pallet fork assembly according to claim 2 or 3, wherein,

the second runner (160) has a length that is twice the length of the first runner (150).

9. A pallet fork assembly according to claim 2 or 3, wherein,

the first sliding groove (150) and the second sliding groove (160) are kidney-shaped grooves.

10. A shuttle comprising a body (200) and the fork assembly of any one of claims 1-9, the fork assembly being disposed on the body (200).

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