CN213228203U

CN213228203U - Driving mechanism of AGV trolley

Info

Publication number: CN213228203U
Application number: CN202021899324.0U
Authority: CN
Inventors: 黄学飞; 邝卫华; 周华; 刘杰
Original assignee: Guangzhou Panyu Polytechnic
Current assignee: Guangzhou Panyu Polytechnic
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-05-18
Anticipated expiration: 2030-09-02

Abstract

The utility model provides a drive mechanism of AGV dolly relates to AGV vehicle field. The driving mechanism of the AGV trolley comprises a main frame, an axle, a first wheel and a second wheel, wherein the axle is arranged in the main frame in a penetrating manner, a positioning structure in blocking fit with the main frame is arranged on the axle, a fastener is movably arranged on the axle, and the fastener is in axial jacking fit with the main frame; the first wheel is rotatably mounted at one end of the axle, the second wheel is rotatably mounted at the other end of the axle, and the first wheel and the second wheel are respectively detachably connected with the axle. The positioning structure on the axle is matched with one side of the main frame in a blocking way, and the fastener is axially adjusted to tightly push the other side of the main frame, so that the main frame is tightly connected with the axle; detachable connection between two wheels and the axletree dismantles first wheel, second wheel from the axletree as required, and then changes the maintenance to the axletree or the main frame that damage, and the degree of difficulty of disassembling the operation is littleer, has effectively reduced cost of maintenance.

Description

Driving mechanism of AGV trolley

Technical Field

The utility model relates to a AGV vehicle technical field especially relates to a actuating mechanism of AGV dolly.

Background

The AGV is a transport vehicle having electromagnetic or optical guidance functions, and can automatically travel along a predetermined route, and transport of articles can be completed without driving and controlling by a specially-assigned person.

For example, the chinese patent application with application publication No. CN106042876A and application publication No. 2016.10.26 discloses a driving apparatus for AGVs, and specifically discloses that the driving apparatus for AGVs comprises a supporting frame, a motor, a transmission mechanism, a wheel bearing and a driving wheel; the supporting frame comprises a fixed seat, limiting plates, a supporting base and an axle, wherein the fixed seat is arranged at two sides of the supporting base, and the limiting plates are fixedly arranged above the supporting base; the axle is symmetrically welded on two sides of the supporting base, the motor is symmetrically and fixedly arranged on the fixed seat, one end of the motor is provided with a chain wheel and is connected with the chain wheel fixedly arranged with the wheel through a transmission mechanism, and the driving wheel is arranged on the axle through a wheel bearing.

AGV's among the prior art drive arrangement adopts the axletree to weld the design form in supporting the base both sides, installs the drive wheel on the axletree through the wheel bearing, utilizes the electrode and then drives the drive wheel and rotates. Wherein, "support the base" and be equivalent to "main frame" in this scheme, with axletree welded fastening on main frame, in case the condition that the axletree damaged or main frame destroys appears, difficult dismantlement replacement part, the degree of difficulty and the cost of maintenance are big.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a drive mechanism of AGV dolly to when solving current AGV drive arrangement and appearing the axletree and damage or the main frame condition of destruction, be difficult to dismantle renewal part, the degree of difficulty and the problem with big costs of maintenance.

The utility model discloses a driving mechanism of AGV dolly's technical scheme does:

the driving mechanism of the AGV comprises a main frame, an axle, a first wheel and a second wheel, wherein the axle is arranged in the main frame in a penetrating manner, a positioning structure matched with the main frame in a blocking manner is arranged on the axle, a fastener is movably arranged on the axle, and the fastener is tightly matched with the main frame in an axial jacking manner;

the first wheel is rotatably mounted at one end of the axle, the second wheel is rotatably mounted at the other end of the axle, and the first wheel and the second wheel are respectively detachably connected with the axle.

Has the advantages that: during assembly, the axle is arranged in the main frame in a penetrating manner, the positioning structure on the axle is in stop fit with one side of the main frame, and the fastener is axially adjusted to perform a jacking action on the other side of the main frame, so that the main frame and the axle are fastened and connected, and the axle is used for bearing the gravity of a whole vehicle and transported articles; first wheel and second wheel rotate respectively and install the both ends at the axletree to releasable connection between two wheels and the axletree can be dismantled first wheel, second wheel from the axletree as required, and adjust the fastener and remove the tight effect in top to the main frame, alright make and unpack apart the separation between axletree and the main frame, and then change the maintenance to the axletree or the main frame that damage, the degree of difficulty of disassembling the operation is littleer, has effectively reduced cost of maintenance.

Further, the axle is threadedly coupled to the fastener, and the fastener and the positioning structure are symmetrically arranged about a center of the axle.

Furthermore, an external thread section is arranged on the axle, the fastening piece is a fastening nut matched with the external thread section, and a rotation stopping washer is further arranged between the fastening nut and the main frame.

Furthermore, the positioning structure is a positioning convex ring, and the positioning convex ring is fixedly connected with the axle.

Further, the first wheel is the same as the second wheel in structure, a bearing is installed between the first wheel and the axle, the bearing is detachably connected with the axle, and a bearing positioning structure is further arranged on the axle.

Further, the bearing is a rolling bearing, the rolling bearing comprises a bearing inner ring, a bearing outer ring and a rolling body arranged between the bearing inner ring and the bearing outer ring in a rolling mode, the bearing outer ring is fixedly connected with the first wheel, the bearing inner ring is detachably sleeved on the axle, and the bearing inner ring is tightly matched with the bearing positioning structure.

Furthermore, a small-diameter section is arranged at the end of the axle, an annular stop surface is arranged between the small-diameter section and the axle, the bearing positioning structure comprises an elastic check ring detachably connected to the end of the axle, and the bearing inner ring is clamped between the annular stop surface and the elastic check ring.

Furthermore, a middle ring platform is arranged on the inner peripheral wall of the first wheel, two rolling bearings are mounted between the first wheel and the axle, and the two rolling bearings are respectively arranged at the outer side positions of the middle ring platform.

Further, a first chain wheel is fixed on the inner side of the first wheel, and a second chain wheel is fixed on the inner side of the second wheel; the actuating mechanism of AGV dolly still includes first driving motor and second driving motor, first driving motor's output shaft with be connected with the chain between the first sprocket, second driving motor's output shaft with also be connected with the chain between the second sprocket.

Drawings

Fig. 1 is an assembly diagram of the driving mechanism of the AGV according to embodiment 1 of the driving mechanism of the AGV of the present invention.

In the figure: 1. a main frame; 2. an axle; 20. a small diameter section; 200. an annular stop surface; 21. positioning the convex ring; 22. fastening a nut; 23. a rotation stop washer; 24. a circlip; 3. a first wheel; 30. a middle ring platform; 31. a first sprocket; 4. a second wheel; 41. a second sprocket; 5. a rolling bearing.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The specific embodiment 1 of the driving mechanism of the AGV trolley of the present invention is, as shown in fig. 1, the driving mechanism of the AGV trolley includes a main frame 1, an axle 2, a first wheel 3 and a second wheel 4, the axle 2 is arranged in the main frame 1 in a penetrating manner, the axle 2 is provided with a positioning structure in stop fit with the main frame 1, the axle 2 is also movably provided with a fastener, and the fastener is in axial abutting fit with the main frame 1; first wheel 3 rotates and installs the one end at axletree 2, and second wheel 4 rotates and installs the other end at axletree 2, and first wheel 3 and second wheel 4 respectively with axletree 2 releasable connection.

During assembly, the axle 2 penetrates through the main frame 1, the positioning structure on the axle 2 is in blocking fit with one side of the main frame 1, and the axial adjusting fastener is used for jacking the other side of the main frame 1, so that the main frame 1 and the axle 2 are fastened and connected, and the axle 2 is used for bearing the gravity of a whole vehicle and transported articles; first wheel 3 and second wheel 4 rotate respectively and install the both ends at axletree 2 to detachable connection between two wheels and the axletree 2, can dismantle first wheel 3, second wheel 4 from axletree 2 as required, and adjust the fastener and remove the tight effect in top to main frame 1, alright make and unpack apart the separation between axletree 2 and the main frame 1, and then change the maintenance to axletree 2 or the main frame 1 that damage, it is littleer to disassemble the degree of difficulty of operation, and effectively reduced cost of maintenance.

In the present embodiment, the axle 2 is threadedly coupled with the fastener, and the fastener and the positioning structure are symmetrically arranged about the center of the axle 2. The fastener and the positioning structure are symmetrically arranged, so that the main frame 1 is accurately installed in the middle of the axle 2, and the stress balance of the AGV trolley is improved. An external thread section is provided on the axle 2, the fastening member is a fastening nut 22 fitted to the external thread section, and a rotation stop washer 23 is further provided between the fastening nut 22 and the main frame 1. Correspondingly, the positioning structure is a positioning convex ring 21, and the positioning convex ring 21 is fixedly connected with the axle 22. The fastening nut 22 can be screwed to tightly push the main frame 1 and matched with the positioning convex ring 21 to realize fastening installation, and when the axle 2 or the main frame 1 is damaged, the fastening acting force can be relieved by reversely screwing the fastening nut 22.

The first wheel 3 and the second wheel 4 have the same structure, the first wheel 3 is taken as an example for detailed description, a bearing is installed between the first wheel 3 and the axle 2, the bearing is detachably connected with the axle 2, and the axle 2 is further provided with a bearing positioning structure. Specifically, the bearing is a rolling bearing 5, the rolling bearing 5 includes a bearing inner ring, a bearing outer ring and a rolling body (not shown in the figure) which is installed between the bearing inner ring and the bearing outer ring in a rolling manner, the bearing outer ring is fixedly connected with the first wheel 3, the bearing inner ring is detachably sleeved on the axle 2, and the bearing inner ring is tightly matched with the bearing positioning structure.

The small-diameter section 20 is arranged at the end part of the axle 2, the annular stop surface 200 is arranged between the small-diameter section 20 and the axle 2, the bearing positioning structure comprises a circlip 24 which can be detachably connected to the end part of the axle 2, and the inner bearing ring of the rolling bearing 5 is clamped between the annular stop surface 200 and the circlip 24. The annular stop surface 200 and the elastic retainer ring 24 are utilized to axially limit the inner bearing ring of the rolling bearing 5, so that the inner bearing ring of the rolling bearing 5 is prevented from axially displacing; in addition, the outer ring of the rolling bearing 5 is tightly clamped on the inner peripheral wall of the first wheel 3, so that the outer ring of the bearing is fixedly connected with the first wheel 3.

In order to improve the rotating assembly precision between the wheel and the axle 2 and the bearing capacity of the AGV trolley, a middle annular table 30 is arranged on the inner peripheral wall of the first wheel 3, two rolling bearings 5 are arranged between the first wheel 3 and the axle 2, and the two rolling bearings 5 are respectively arranged at the outer side positions of the middle annular table. In addition, a first chain wheel 31 is fixed on the inner side of the first wheel 3, a second chain wheel 41 is fixed on the inner side of the second wheel 4, the driving mechanism of the AGV further comprises a first driving motor and a second driving motor (not shown in the figure), a chain is connected between the output shaft of the first driving motor and the first chain wheel 31, and a chain is also connected between the output shaft of the second driving motor and the second chain wheel 41. The output shaft of the first driving motor drives the first chain wheel 31 and the first wheel 3 to rotate by adopting chain transmission, the output shaft of the second driving motor also drives the second chain wheel 41 and the second wheel 4 to rotate by adopting chain transmission, the transmission stability of chain transmission is better, and the problem that the belt transmission is easy to slip is avoided.

The utility model discloses an other embodiments of actuating mechanism of AGV dolly, in order to satisfy different user demands, antifriction bearing set up quantity and position and can not only be limited to the structural style among embodiment 1, still can only respectively set up a antifriction bearing on the internal perisporium of first wheel and second wheel, save and set up the middle part ring platform on the internal perisporium of first wheel and second wheel, make antifriction bearing's bearing inner race and the internal perisporium of wheel carry out the tight fit of forced installation card, antifriction bearing's bearing inner race presss from both sides tight location between annular retaining surface and circlip, can realize the rotation assembly between wheel and the axletree equally, and can dismantle first wheel and second wheel when needs are changed the maintenance.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A driving mechanism of an AGV trolley is characterized by comprising a main frame, an axle, a first wheel and a second wheel, wherein the axle is arranged in the main frame in a penetrating mode, a positioning structure matched with the main frame in a blocking mode is arranged on the axle, a fastening piece is movably arranged on the axle, and the fastening piece is matched with the main frame in an axial jacking mode;

2. The AGV drive mechanism of claim 1 wherein said axle is threadably connected to said fastener, said fastener and said positioning structure being symmetrically disposed about the center of said axle.

3. The AGV car drive mechanism of claim 2, wherein said axle has an externally threaded section, said fastener is a fastening nut cooperating with said externally threaded section, and a rotation stop washer is provided between said fastening nut and said main frame.

4. The AGV cart drive mechanism of claim 1, wherein said positioning structure is a positioning collar fixedly attached to said axle.

5. The AGV cart drive mechanism of claim 1, wherein said first wheel and said second wheel are identical in construction, a bearing is mounted between said first wheel and said axle, said bearing is releasably attached to said axle, and a bearing positioning structure is provided on said axle.

6. The AGV car drive mechanism of claim 5, wherein said bearing is a rolling bearing, said rolling bearing includes a bearing inner ring, a bearing outer ring and a rolling body mounted between said bearing inner ring and said bearing outer ring, said bearing outer ring is fixedly connected to said first wheel, said bearing inner ring is detachably mounted on said axle, and said bearing inner ring is tightly fitted to said bearing positioning structure.

7. The AGV car drive mechanism of claim 6, wherein the end of the axle has a small diameter section, an annular stop surface is provided between the small diameter section and the axle, the bearing positioning structure includes a circlip that can be detachably connected to the end of the axle, and the inner race of the bearing is clamped between the annular stop surface and the circlip.

8. The AGV driving mechanism according to claim 6, wherein said first wheel has a central ring on its inner peripheral wall, two rolling bearings are mounted between said first wheel and said axle, and said two rolling bearings are respectively disposed at outer positions of said central ring.

9. The AGV cart drive mechanism of claim 1, wherein a first sprocket is secured to the inside of said first wheel and a second sprocket is secured to the inside of said second wheel; the actuating mechanism of AGV dolly still includes first driving motor and second driving motor, first driving motor's output shaft with be connected with the chain between the first sprocket, second driving motor's output shaft with also be connected with the chain between the second sprocket.