CN219949350U

CN219949350U - Pitch-variable shuttle

Info

Publication number: CN219949350U
Application number: CN202321278922.XU
Authority: CN
Inventors: 张金虎
Original assignee: Beijing Jingdong Qianshi Technology Co Ltd
Current assignee: Beijing Jingdong Qianshi Technology Co Ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-11-03
Anticipated expiration: 2033-05-24

Abstract

The utility model discloses a variable-pitch shuttle, and relates to the technical field of warehouse logistics. One embodiment of the variable-pitch shuttle comprises: the device comprises a first vehicle body, a second vehicle body, a guide shaft, a fixed fork, a movable fork and an intermediate supporting plate; the device comprises a middle pallet, a movable pallet and a gear, and is characterized by further comprising a distance changing mechanism, wherein the distance changing mechanism comprises a first rack fixedly connected with the fixed pallet, a second rack fixedly connected with the movable pallet, and the gear fixedly arranged on the middle pallet and meshed with the first rack and the second rack, and the gear drives the middle pallet to move in the same direction at half of the moving speed of the movable pallet through rack-and-pinion transmission in the moving process of the movable pallet. The embodiment realizes the double stroke relation of the movable fork and the middle supporting plate through a simpler and more reliable rack and pinion transmission mode.

Description

Pitch-variable shuttle

Technical Field

The utility model relates to the technical field of warehouse logistics, in particular to a variable-pitch shuttle.

Background

In modern warehouse logistics, the goods arrival personnel system based on the shuttle has wide application due to the advantages of high storage density, high goods sorting efficiency, low required manual strength and the like. The shuttle can be divided into a fixed-distance shuttle and a variable-distance shuttle, and the fork spacing of the fixed-distance shuttle is fixed and can only be used for storing and taking goods with fixed sizes; the fork spacing of the distance shuttle can be adjusted according to the size of the goods, so that the distance shuttle can be used for storing and taking goods with different sizes. The middle parts of the fixed fork and the movable fork of the fixed-distance shuttle are generally provided with middle supporting plates to prevent the sagging and the protrusion of the middle parts of goods and even scratch with the goods shelf track.

In the existing fixed-distance shuttle structure, two groups of synchronous belts are driven by two driving shafts through gear transmission differential speed, and then the moving fork and the middle supporting plate are respectively determined by the two groups of synchronous belts, so that the middle supporting plate is always positioned in the middle of the fixed fork and the moving fork in the moving process of the moving fork, but the double-stroke relation between the moving fork and the middle supporting plate is possibly damaged due to the slipping of the synchronous belts, and finally the middle supporting plate is not positioned in the middle of the fixed fork and the moving fork.

Disclosure of Invention

In view of the above, the embodiment of the utility model provides a variable-pitch shuttle, which realizes the double-stroke relationship between a movable fork and an intermediate pallet by a simpler and more reliable rack-and-pinion transmission mode.

In order to achieve the above purpose, the utility model provides a variable-pitch shuttle.

The variable-pitch shuttle of the embodiment of the utility model comprises the following components: the device comprises a first vehicle body, a second vehicle body, a guide shaft, a fixed fork, a movable fork and a middle supporting plate, wherein the first vehicle body and the second vehicle body are arranged at intervals, the guide shaft is connected between the first vehicle body and the second vehicle body, the fixed fork is sleeved on the guide shaft and fixedly connected with the first vehicle body, the movable fork is sleeved on the guide shaft and can move along the direction close to or far away from the fixed fork, and the middle supporting plate is sleeved on the guide shaft and is positioned between the fixed fork and the movable fork; the variable-pitch shuttle further comprises: the pitch-changing mechanism comprises a first rack fixedly connected with the fixed fork, a second rack fixedly connected with the movable fork, and a gear fixedly arranged on the middle supporting plate and meshed with the first rack and the second rack, wherein the first rack, the second rack and the gear drive the middle supporting plate to move in the same direction at half of the moving speed of the movable fork through rack-and-pinion transmission in the moving process of the movable fork.

Alternatively, the tooth extending direction of the first rack and the second rack is identical to the installation direction of the guide shaft, and the first rack and the second rack are symmetrical with respect to the rotation axis center of the gear at the meshing position of the gear.

Optionally, the first rack is disposed at the bottom of the fixed fork, the second rack is disposed at the bottom of the movable fork, and the gear is disposed at the bottom of the middle pallet.

Optionally, the variable-pitch shuttle further includes: the first guide plate is fixedly connected with the fixed fork and faces the movable fork, and the second guide plate is fixedly connected with the movable fork and faces the fixed fork; the first guide plate and the second guide plate are arranged in parallel with the middle supporting plate; the first rack is fixedly connected with the first guide plate, and the second rack is fixedly connected with the second guide plate.

Optionally, the distance-varying mechanism further comprises: a first backing plate and a second backing plate; the first rack is fixedly connected with the first guide plate through a first base plate, and the second rack is fixedly connected with the second guide plate through a second base plate.

Optionally, the distance-varying mechanism further comprises: a gland and a locking member; the gland is respectively attached to the outer end face of the gear and the outer end face of the rotating shaft of the gear; the locking piece passes through the gland and the outer end face of the rotating shaft to fix the gland on the rotating shaft.

Optionally, one gear and the first rack and the second rack meshed with the gear form a transmission structure, and the variable-pitch mechanism is provided with a plurality of transmission structures.

Optionally, the pitch change mechanism has two transmission structures.

Optionally, during the moving of the moving fork, the intermediate pallet is located at a middle position between the fixed fork and the moving fork.

Optionally, the driving source for moving the fork is mounted in a cavity of the first body or the second body.

According to the technical scheme of the utility model, one embodiment of the utility model has the following advantages or beneficial effects:

the driving shaft and the synchronous belt driving mode of the middle supporting plate of the existing structure are canceled, a first rack and a second rack are respectively arranged on the fixed fork and the movable fork, a gear is arranged on the middle supporting plate, and the gear is respectively meshed with the first rack and the second rack at the relative positions. When the movable fork moves, the middle supporting plate is driven to move in a rack and pinion transmission mode, and the moving speed of the middle supporting plate is ensured to be half of that of the movable fork based on a speed doubling travel mechanism of the rack and pinion, so that the middle supporting plate is always positioned in the middle of the fixed fork and the movable fork in the moving process of the movable fork. The utility model has simple structure, easy realization and high reliability, and does not have the problem of slipping of the synchronous belt in the existing structure.

Further effects of the above-described non-conventional alternatives are described below in connection with the embodiments.

Drawings

The drawings are included to provide a better understanding of the utility model and are not to be construed as unduly limiting the utility model. Wherein:

FIG. 1 is a schematic bottom view of a variable pitch shuttle in an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of the gear of FIG. 1;

FIG. 3 is a schematic top view of a variable pitch shuttle in an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating the connection of gears to a shaft in an embodiment of the present utility model;

fig. 5 is a schematic structural view of a pitch mechanism according to an embodiment of the present utility model.

Reference numerals illustrate:

first vehicle body: 10; the second vehicle body: 20, a step of; guide shaft: 30; fixing the fork: 40, a step of performing a; moving the fork: 50; middle supporting plate: 60; first deflector: 70; and a second guide plate: 80; a distance-changing mechanism: 90; first rack: 91; a second rack: 92; gear: 93; a first backing plate: 94; a second backing plate: 95; and (2) rotating shaft: 96; and (3) pressing cover: 97; locking piece: 98.

Detailed Description

Exemplary embodiments of the present utility model will now be described with reference to the accompanying drawings, in which various details of the embodiments of the present utility model are included to facilitate understanding, and are to be considered merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the utility model. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

It should be noted that "disposed," "mounted," "connected," and "connected" in the following description may refer to a fixed fit between two objects, or may refer to a non-fixed fit (e.g., a sliding connection); either a removable fit (e.g., a bolt-and-nut connection) or a non-removable fit (e.g., a weld) may be indicated; the direct engagement may be represented, or the indirect engagement may be represented by a third substance.

In the description of the present utility model, unless explicitly defined otherwise, "above" or "below" a first object may include the first object and the second object being in direct contact, or may include the first object and the second object not being in direct contact but being in contact by another object therebetween. The first object being "above," "over" and "above" the second object includes the first object being directly above and obliquely above the second object, or simply indicating that the first object is greater in height than the second object. The first object being "under", "below" and "beneath" the second object includes the first object being directly under and obliquely under the second object, or simply means that the first object is less high than the second object. The terms "upper," "lower," "left," "right," and the like, as used herein, may be based on the orientation or position shown in the drawings and may also be based on a particular orientation and position as defined, and are not intended to be descriptive as an indication or suggestion that the device or element in question must have a particular orientation or must be constructed and operated in a particular orientation and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them. Embodiments of the present utility model and technical features in the embodiments may be combined with each other without collision.

Fig. 1 is a schematic overall structure of a pitch-varying shuttle according to an embodiment of the present utility model, fig. 2 is an enlarged schematic view of a gear in fig. 1, fig. 3 is a schematic top view of the pitch-varying shuttle according to an embodiment of the present utility model, fig. 4 is a schematic view of a connection between the gear and a rotating shaft, and fig. 5 is a schematic structure of a pitch-varying mechanism according to an embodiment of the present utility model.

As shown in fig. 1 to 5, the variable-pitch shuttle according to the embodiment of the present utility model has: the vehicle comprises a first vehicle body 10, a second vehicle body 20, a guide shaft 30, a fixed fork 40, a movable fork 50 and an intermediate supporting plate 60, wherein the first vehicle body 10 and the second vehicle body 20 are arranged at intervals, the guide shaft 30 is connected between the first vehicle body 10 and the second vehicle body 20, the fixed fork 40 is sleeved on the guide shaft 30 and fixedly connected with the first vehicle body 10, the movable fork 50 is sleeved on the guide shaft 30 and can move along a direction approaching or separating from the fixed fork 40, and the intermediate supporting plate 60 is sleeved on the guide shaft 30 and is positioned between the fixed fork 40 and the movable fork 50.

Wherein the first car body 10 and the second car body 20 are used for realizing the movement of the variable-pitch shuttle along the track, and the fixed fork 40 and the movable fork 50 are used for taking goods. In one embodiment, the fixed fork 40 does not slide along the guide axle 30, the moving fork 50 can slide controllably along the guide axle 30, and a drive source (e.g., a motor) for the moving fork 50 can be mounted within the cavity of the first body 10 or the second body 20. The above driving source may be a driving shaft coupled to a timing belt or any other suitable manner for driving the movable fork 50. As a preferred embodiment, the fixed fork 40 may be fixedly provided with a first guide plate 70 at a side facing the movable fork 50, the movable fork 50 may be fixedly provided with a second guide plate 80 at a side facing the fixed fork 40, and the first guide plate 70 and the second guide plate 80 may be disposed in parallel with the intermediate pallet 60.

The initial installation position of the middle pallet 60 is in the middle of the fixed fork 40 and the movable fork 50, the utility model ensures that the middle pallet 60 and the movable fork 50 move in the same direction (i.e. ensure that the moving directions of the two are the same) during the movement of the movable fork 50, and ensures that the moving speed of the middle pallet 60 is half of the moving speed of the movable fork 50 through a distance changing mechanism 90 which will be described below, and finally ensures that the middle pallet 60 is always in the middle position between the fixed fork 40 and the movable fork 50 during the movement of the movable fork 50, thereby effectively supporting goods on the distance changing shuttle.

The pitch mechanism 90 of embodiments of the present utility model may include at least one independently movable transmission, and fig. 1, 3, and 5 illustrate a case where the pitch mechanism 90 includes two transmissions. In practical application, a transmission structure comprises a gear 93 and two racks: a first rack 91 and a second rack 92. Specifically, the first rack 91 is fixedly connected to the fixed fork 40, the second rack 92 is fixedly connected to the movable fork 50, and the gear 93 is fixedly provided on the intermediate pallet 60 and is engaged with the first rack 91 and the second rack 92, respectively. Based on the above structure, when the movable fork 50 moves along the guide shaft 30 under the driving of the driving source, the second rack 92 fixedly connected with the movable fork 50 moves along with it, and in the case that the fixed fork 40 and the first rack 91 remain stationary in the direction of the guide shaft 30, the second rack 92 drives the gear 93 to rotate and generates the movement of the gear 93 in the direction of the guide shaft 30. It can be seen from the rack and pinion mechanism that the speed of movement of the pinion 93 is half that of the second rack 92, so that the speed of movement of the intermediate pallet 60 is half that of the moving fork 50. That is, the first rack 91, the second rack 92 and the gear 93 drive the middle pallet 60 to move in the same direction with respect to the moving pallet 50 at half the moving speed of the moving pallet 50 through rack-and-pinion transmission during the moving of the moving pallet 50, that is, the double speed (double speed), double stroke (double stroke in the same time) movement of the moving pallet 50 with respect to the middle pallet 60 is achieved. Thus, when the initial installation position of the intermediate pallet 60 is at the middle of the fixed fork 40 and the movable fork 50, it is ensured that the intermediate pallet 60 is always located at the middle of the fixed fork 40 and the movable fork 50 during the movement of the movable fork 50.

Preferably, for convenience of implementation, the tooth extending directions of the first and second racks 91 and 92 may be set to coincide with the installation direction of the guide shaft 30, and the first and second racks 91 and 92 may be set to be center-symmetrical with respect to the rotation shaft 96 of the gear 93 at the meshing position of the gear 93. In a specific scenario, the first rack 91 may be disposed at the bottom of the fixed fork 40, the second rack 92 may be disposed at the bottom of the movable fork 50, and the gear 93 may be disposed at the bottom of the intermediate pallet 60, thereby facilitating placement of the goods on top of the fixed fork 40, the movable fork 50, and the intermediate pallet 60. In the case of having the first guide plate 70 and the second guide plate 80, the first rack 91 may be fixedly connected to the first guide plate 70, and the second rack 92 may be fixedly connected to the second guide plate 80, thereby achieving the fixation of the first rack 91 to the fixed fork 40 and the fixation of the second rack 92 to the movable fork 50. More preferably, in order to improve the structural strength, the first rack 91 and the first guide plate 70 may be fixedly connected by a first pad 94 between the first rack 91 and the first guide plate 70, and the second rack 92 and the second guide plate 80 may be fixedly connected by a second pad 95 between the second rack 92 and the second guide plate 80, and the first pad 94 and the second pad 95 may be used as components of the pitch change mechanism 90.

In order to prevent the gear 93 from being separated from the shaft 96, in the embodiment of the present utility model, the pressing cover 97 is respectively attached to the outer end surface of the gear 93 and the outer end surface of the shaft 96 of the gear 93, and the locking member 98 is inserted through the pressing cover 97 and the outer end surface of the shaft 96 to fix the pressing cover 97 to the shaft 96, so that the movement tendency of the gear 93 separated from the shaft 96 is finally restrained. The outer end faces refer to the end faces of the gear 93 and the gear shaft 96 far from the middle supporting plate 60, and the locking member 98 can be a screw or other applicable parts, and the locking member 98 can be combined with a gasket for use.

Those skilled in the art will appreciate that the embodiments described above in the specification are all preferred embodiments and that the components involved are not necessarily required to practice the utility model.

In the technical scheme of the embodiment of the utility model, a driving shaft and a synchronous belt driving mode of an intermediate supporting plate with an existing structure are canceled, a first rack and a second rack are respectively arranged on a fixed fork and a movable fork, a gear is arranged on the intermediate supporting plate, and the gear is respectively meshed with the first rack and the second rack at opposite positions. When the movable fork moves, the middle supporting plate is driven to move in a rack and pinion transmission mode, and the moving speed of the middle supporting plate is ensured to be half of that of the movable fork based on a speed doubling travel mechanism of the rack and pinion, so that the middle supporting plate is always positioned in the middle of the fixed fork and the movable fork in the moving process of the movable fork. The utility model has simple structure, easy realization and high reliability, and does not have the problem of slipping of the synchronous belt in the existing structure.

The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives can occur depending upon design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A variable pitch shuttle, comprising: the device comprises a first vehicle body, a second vehicle body, a guide shaft, a fixed fork, a movable fork and a middle supporting plate, wherein the first vehicle body and the second vehicle body are arranged at intervals, the guide shaft is connected between the first vehicle body and the second vehicle body, the fixed fork is sleeved on the guide shaft and fixedly connected with the first vehicle body, the movable fork is sleeved on the guide shaft and can move along the direction close to or far away from the fixed fork, and the middle supporting plate is sleeved on the guide shaft and is positioned between the fixed fork and the movable fork;

the variable-pitch shuttle is characterized by further comprising:

the pitch-changing mechanism comprises a first rack fixedly connected with the fixed fork, a second rack fixedly connected with the movable fork, and a gear fixedly arranged on the middle supporting plate and meshed with the first rack and the second rack, wherein the first rack, the second rack and the gear drive the middle supporting plate to move in the same direction at half of the moving speed of the movable fork through rack-and-pinion transmission in the moving process of the movable fork.

2. The variable-pitch shuttle of claim 1, wherein the tooth extension directions of the first and second racks are identical to the installation direction of the guide shaft, and the first and second racks are symmetrical about the rotation axis center of the gear at the meshing position of the gear.

3. The variable pitch shuttle of claim 1, wherein a first rack is disposed at the bottom of the fixed fork, a second rack is disposed at the bottom of the movable fork, and the gear is disposed at the bottom of the intermediate pallet.

4. The pitch-changing shuttle of claim 1, further comprising: the first guide plate is fixedly connected with the fixed fork and faces the movable fork, and the second guide plate is fixedly connected with the movable fork and faces the fixed fork;

the first guide plate and the second guide plate are arranged in parallel with the middle supporting plate;

the first rack is fixedly connected with the first guide plate, and the second rack is fixedly connected with the second guide plate.

5. The variable pitch shuttle of claim 4, wherein the variable pitch mechanism further comprises: a first backing plate and a second backing plate;

the first rack is fixedly connected with the first guide plate through a first base plate, and the second rack is fixedly connected with the second guide plate through a second base plate.

6. The pitch-varying shuttle of claim 1, wherein the pitch-varying mechanism further comprises: a gland and a locking member;

the gland is respectively attached to the outer end face of the gear and the outer end face of the rotating shaft of the gear;

the locking piece passes through the gland and the outer end face of the rotating shaft to fix the gland on the rotating shaft.

7. The variable-pitch shuttle of claim 1, wherein one of the gears and the first and second racks engaged with the gear form a transmission, the variable-pitch mechanism having a plurality of transmissions.

8. The variable pitch shuttle of claim 7, wherein the variable pitch mechanism has two drive configurations.

9. The variable pitch shuttle of claim 1, wherein the intermediate pallet is located at a mid-position between the fixed fork and the mobile fork during movement of the mobile fork.

10. The variable pitch shuttle of claim 1, wherein the drive source for moving the fork is mounted within a cavity of the first body or the second body.