Combined planet carrier output speed reducing mechanism of AGV (Automatic Guided Vehicle)

Abstract

The utility model discloses an AGV combined planet carrier output speed reducing mechanism which comprises a first-stage speed reducing assembly and a second-stage speed reducing assembly which are in power connection. The second-stage speed reduction assembly comprises a sun gear connected with the output end of the first-stage speed reduction assembly, the sun gear and the output end of the first-stage speed reduction assembly are coaxially arranged, a planet carrier is coaxially arranged on the outer side of the sun gear, and the inner side of the planet carrier is in power connection with the sun gear through the planet gear. The combined type planet carrier output speed reducer structure is adopted, high integration is achieved, occupied space is small, large torque is transmitted, meanwhile, lower rotating speed is output, the rotating direction of the input end and the rotating direction of the output end can be consistent, the rotating speed of the output end is high, and the output speed of the output end is high. The structure is simple and compact, installation is easy, cost is low, efficiency is high, and the device is especially suitable for AGV traction trolleys.

Description

Technical Field

[0001] The utility model relates to the field of AGV towing carts, and particularly to an AGV combined planetary carrier output reduction mechanism. Background Art

[0002] At present, parallel shaft speed reducers are widely used. However, the reduction ratio that the current parallel shaft speed reducers can transmit is relatively small and cannot meet the large reduction ratio requirements. In view of this limitation, through practice, a combined speed reducer in which a parallel shaft speed reducer and a planetary speed reducer (ring gear output) are connected as a whole has been formed to achieve large reduction ratio transmission. The ring gear of this type of speed reducer has a large size and a cage-type planetary carrier is required to connect the planetary gears. Moreover, the rotation directions of the input end and the output end of this type of speed reducer are inconsistent, and the complexity of the structure increases the difficulty and cost of manufacturing and maintenance, and it can no longer meet the requirements of high efficiency, compactness and low cost in AGV towing carts where the space and weight are more and more strictly restricted. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an AGV combined planetary carrier output reduction mechanism to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An AGV combined planetary carrier output reduction mechanism includes a first-stage reduction component and a second-stage reduction component that are power-connected.

[0006] The second-stage reduction component includes a sun gear connected to the output end of the first-stage reduction component. The sun gear is coaxially arranged with the output end of the first-stage reduction component. A planetary carrier is coaxially arranged outside the sun gear. The inner side of the planetary carrier is power-connected to the sun gear through planetary gears. One end of the planetary carrier away from the first-stage reduction component is connected with a wheel side component.

[0007] As a further scheme of the utility model: The first-stage reduction component includes a box body and an input gear and an output gear arranged in the box body. The input gear is meshed with the output gear or power-connected through a gear set.

[0008] As a further scheme of the utility model: The sun gear is coaxially arranged with the output gear.

[0009] As a further scheme of the utility model: Three planetary gears are provided and are evenly meshed outside the sun gear. An internal gear ring is fixedly connected to the box body. A support shaft for supporting the rotation of the planetary gears is provided on the planetary carrier.

[0010] As a further solution of the utility model: a connecting sleeve is fixedly connected to one side of the planet carrier close to the box body. The connecting sleeve is sleeved outside the internal gear ring, and a bearing is arranged between the inner side of the connecting sleeve and the outside of the internal gear ring.

[0011] As a further solution of the utility model: the wheel side assembly includes a rubber-coated wheel arranged outside the planet carrier, and the planet carrier, the rubber-coated wheel and the connecting sleeve are fixedly connected by fastening screws.

[0012] As a further solution of the utility model: sealing rings are arranged between the connecting sleeve and the bearing, and between the connecting sleeve and the planet carrier. The sealing rings are O-shaped rubber sealing rings, which are embedded in the grooves of the connecting sleeve and the planet carrier.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. This application adopts a combined planet carrier output reduction gear structure, achieving high integration, occupying less space, transmitting large torque while outputting lower speed, and enabling the same rotation direction of the input end and the output end. The structure is simple and compact, easy to install, low in cost and high in efficiency, and is particularly suitable for AGV towing trolleys;

[0015] 2. The rotational connection between the planet gear and the planet carrier in this application is a cantilever structure, which is compact and convenient for assembly;

[0016] 3. The rubber-coated wheel, the planet carrier and the connecting sleeve in this application are of a split structure and are connected into one body by screws, so that the rubber-coated wheel rotates synchronously with the planet carrier. The split structure is simple and conducive to assembly Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of this embodiment;

[0018] Figure 2 It is an axial sectional view of the speed reduction mechanism of this embodiment;

[0019] Figure 3 It is a radial sectional view of the secondary speed reduction mechanism of this embodiment.

[0020] In the figure:

[0021] 1 - primary speed reduction assembly, 101 - input gear, 102 - output gear, 103 - box body;

[0022] 2 - secondary speed reduction assembly, 201 - sun gear, 202 - planet gear, 203 - internal gear ring, 204 - connecting sleeve, 205 - planet carrier, 206 - sealing ring, 207 - bearing, 208 - fastening screw;

[0023] 3 - rubber-coated wheel. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-3 , in the embodiment of the present invention, an AGV combined planetary carrier output reduction mechanism includes a first-stage reduction assembly 1, a second-stage reduction assembly 2 and a wheel side assembly that are power-connected.

[0026] The first-stage reduction assembly 1 includes a box body 103 and an input gear 101 and an output gear 102 arranged in the box body. The input gear 101 is meshed with the output gear 102 or power-connected through a gear set.

[0027] The second-stage reduction assembly 2 includes a sun gear 201 connected to the output end of the first-stage reduction assembly 1. The sun gear 201 is coaxially arranged with the output end of the first-stage reduction assembly 1. In this embodiment, the sun gear 201 is coaxially arranged with the output gear 102. A planetary carrier 205 is coaxially arranged outside the sun gear 201. The inner side of the planetary carrier 205 is power-connected to the sun gear 201 through a planetary gear 202. In this embodiment, three planetary gears 202 are provided and evenly meshed outside the sun gear 201. An internal gear ring 203 is fixedly connected to the box body 103. A support shaft for supporting the rotation of the planetary gear 202 is provided on the planetary carrier 205. A connecting sleeve 204 is fixedly connected to one side of the planetary carrier 205 close to the box body 103. The connecting sleeve 204 is sleeved outside the internal gear ring 203. A bearing 207 is provided between the inner side of the connecting sleeve 204 and the outside of the internal gear ring 203. The bearing 207 adopts a deep groove ball bearing. Sealing rings 206 are provided between the connecting sleeve 204 and the bearing 207 and between the connecting sleeve 204 and the planetary carrier 205. The sealing rings 206 are O-shaped rubber sealing rings and are embedded in the grooves of the connecting sleeve 204 and the planetary carrier 205 to prevent oil leakage.

[0028] One end of the planetary carrier 205 far from the first-stage reduction assembly 1 is connected with a wheel side assembly. The wheel side assembly includes a rubber-coated wheel 3 arranged outside the planetary carrier 205. The planetary carrier 205, the rubber-coated wheel 3 and the connecting sleeve 204 are fixedly connected by fastening screws 208.

[0029] When the utility model is in use, the input gear 101 is connected to the driving motor of the AGV cart as power input. A primary reduction is formed by the input gear 101 and the output gear 102, and then the sun gear 201 is driven to rotate by the output gear 102. The sun gear 201, as the input end of the planetary reducer, is connected to the end of the input gear 101, with a simple structure and a compact size. The internal gear ring 203 and the box body 103 are precisely fixedly connected through shaft hole limit fit and are coaxial with the rotation of the sun gear 201. The sun gear 201 rotates with the input gear 101 to realize the meshing of the planetary gear train, while the internal gear ring 203 remains stationary, and the three planetary gears 202 drive the planetary carrier 205 to realize rotational output; the planetary carrier 205, the rubber-coated wheel 3 and the connecting sleeve 204 are connected into one body by screws. The connecting sleeve 204 is rotationally connected to the internal gear ring 203 through two deep groove ball bearings, and the planetary carrier 205 together with the connecting sleeve 204 and the rubber-coated wheel 3 realizes rotary support. The three planetary gears 202 drive the planetary carrier 205 and the connected rubber-coated wheel 3 to realize rotational output.

[0030] In the planetary reducer assembly, the internal gear ring adopts an external connection deep groove ball bearing without covering the rubber-coated wheel, with a relatively simple structure. The planetary carrier output mode adopted by the planetary reducer assembly cancels the relatively complex cage-type planetary carrier, saving the processing cost; at the same time, the rotational connection between the planetary gear and the planetary carrier is a cantilever structure, with a compact structure, a simple and clear assembly process, and a reduced assembly difficulty.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combined planetary carrier output reduction mechanism for an AGV, characterized in that, It includes a first-stage deceleration component (1) and a second-stage deceleration component (2) with power connection; The second-stage deceleration component (2) includes a sun gear (201) connected to the output end of the first-stage deceleration component (1). The sun gear (201) is coaxially arranged with the output end of the first-stage deceleration component (1). A planet carrier (205) is coaxially arranged outside the sun gear (201). The inner side of the planet carrier (205) is power-connected to the sun gear (201) through planet gears (202). One end of the planet carrier (205) far from the first-stage deceleration component (1) is connected to a wheel-end component. The wheel-end component includes a rubber-coated wheel (3) arranged outside the planet carrier (205); There are three planet gears (202) which are evenly meshed outside the sun gear (201). The first-stage deceleration component (1) includes a housing (103) and an input gear (101) and an output gear (102) arranged in the housing. An internal gear ring (203) is fixedly connected to the housing (103). A support shaft for supporting the rotation of the planet gears (202) is provided on the planet carrier (205). A connecting sleeve (204) is fixedly connected to one side of the planet carrier (205) close to the housing (103). The connecting sleeve (204) is sleeved outside the internal gear ring (203). A bearing (207) is provided between the inner side of the connecting sleeve (204) and the outside of the internal gear ring (203).

2. The combined planetary carrier output reduction mechanism of an AGV according to claim 1, characterized in that, The input gear (101) is meshed and connected with the output gear (102) or power-connected through a gear set.

3. The combined planetary carrier output reduction mechanism of an AGV according to claim 2, characterized in that, The sun gear (201) is coaxially arranged with the output gear (102).

4. The combined planetary carrier output reduction mechanism of an AGV according to claim 1, wherein, The planet carrier (205), the rubber-coated wheel (3), and the connecting sleeve (204) are fixedly connected through fastening screws (208).

5. The combined planetary carrier output reduction mechanism of an AGV according to claim 1, characterized in that, Sealing rings (206) are provided between the connecting sleeve (204) and the bearing (207), and between the connecting sleeve (204) and the planet carrier (205). The sealing rings (206) are O-shaped rubber sealing rings and are embedded in the grooves of the connecting sleeve (204) and the planet carrier (205).

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