Traveled distance measuring device for AGV (Automatic Guided Vehicle)

Abstract

The utility model discloses a driving mileage measuring device for an AGV (Automatic Guided Vehicle) model, belonging to the field of vehicle driving mileage measurement. Comprising a protective cover, an encoder and a transmission shaft. Wherein the protective cover is fixedly arranged on a vehicle body, and a mounting cavity is formed in the protective cover; the encoder is arranged in the installation cavity, one end of the transmission shaft is fixedly connected with the driven wheel structure, and the other end of the transmission shaft extends to the position of the encoder and is matched with the encoder. The transmission shaft is fixedly connected with the driven wheel structure, the number of driving turns of the driven wheel is transmitted to the transmission shaft, then the number of driving turns of the driven wheel is transmitted to the encoder through the transmission shaft, the number of driving turns of the driven wheel is recorded through the encoder, and then the driving mileage of the AGV can be obtained through calculation. The problem that the vehicle driving mileage record deviates due to the driving wheel slipping condition is solved. And meanwhile, the protective cover is arranged for accommodating the encoder, so that the encoder is fully protected.

Description

Technical Field

[0001] This utility model relates to the field of vehicle mileage measurement, and in particular to a mileage measurement device for AGV models. Background Technology

[0002] AGVs (Automated Guided Vehicles) are intelligent transportation devices that achieve unmanned driving through navigation systems (such as magnetic strips, lasers, vision, or inertial navigation). They are widely used in logistics, manufacturing, and other fields. Their mileage measurement usually relies on encoders or odometers. The encoder is installed on the drive wheel or motor shaft and calculates the travel distance by recording the number of pulses of wheel rotation. The accuracy is improved by combining the position correction of the navigation system (such as SLAM or RFID tags), ultimately achieving accurate path tracking and mileage statistics, and providing reliable mobile data support for the scheduling system.

[0003] However, in existing mileage measurement technologies, the encoder used for mileage measurement is generally set on the drive wheel, and the drive wheel often slips, which leads to deviations in the recorded vehicle mileage. Utility Model Content

[0004] This invention provides a mileage measurement device for AGV models, which can solve the problem of deviation in vehicle mileage measurement caused by drive wheel slippage in the prior art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A mileage measurement device for AGV models, comprising:

[0007] A protective cover, which is fixedly mounted on the vehicle body, has an installation chamber inside.

[0008] An encoder, wherein the encoder is disposed within the mounting cavity;

[0009] A transmission shaft, one end of which is fixedly connected to the passive wheel structure, and the other end extends to the encoder position.

[0010] In one embodiment of this utility model: the protective cover includes a main body and a connecting part that are fixedly connected. The main body has an installation chamber, and the connecting part has a plurality of connecting holes. The connecting part is fixedly installed and connected to the vehicle body through a fastener.

[0011] In one embodiment of this utility model, the main body has a cylindrical structure.

[0012] In one embodiment of this utility model: an avoidance notch is provided at the end of the main body that is away from the connecting part.

[0013] In one embodiment of this utility model: the passive wheel structure includes a wheel axle, a wheel body, and an end cap; the wheel body is rotatably mounted on the wheel axle, and the end cap is fixedly mounted on the wheel body.

[0014] In one embodiment of this utility model: a transmission chamber is provided inside the axle, and the transmission shaft is disposed inside the transmission chamber and coaxially disposed with the axle.

[0015] In one embodiment of this utility model: a bearing is provided between the wheel axle and the transmission shaft.

[0016] In one embodiment of this utility model: one end of the axle is fixedly connected to the end cover, and the other end is engaged with the encoder.

[0017] In one embodiment of this utility model: a transmission ring is fixedly connected to the end of the transmission shaft away from the encoder, and the transmission ring is fixedly connected to the end cover by a locking member.

[0018] In one embodiment of this utility model: the transmission shaft and the transmission ring are tightly fixed together.

[0019] The mileage measuring device for AGV models according to this utility model has at least one of the following technical effects:

[0020] In this application, the transmission shaft is fixedly connected to the driven wheel structure. The number of revolutions of the driven wheel is transmitted to the transmission shaft, which then transmits the number of revolutions to the encoder. The encoder records the number of revolutions of the driven wheel, and the mileage of the AGV can be calculated, thus solving the problem of deviation in mileage recording caused by drive wheel slippage. Simultaneously, a protective cover is provided to house the encoder, effectively protecting it. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood in conjunction with the following description of the embodiments with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the passive wheel structure in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the transmission shaft and wheel axle of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the disassembled present invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the protective cover of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the transfer ring of this utility model;

[0028] Figure 7 This is a structural diagram showing the exploded position of the round nut of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Protective cover; 2. Encoder; 3. Transmission shaft; 4. Axle; 5. Wheel body; 6. End cover; 7. Spacer; 8. Stop washer; 9. Spacer; 10. Round nut; 11. Transmission ring; 12. Adjusting shim. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] like Figure 1-7 As shown in the figure, this utility model provides a mileage measurement device for AGV vehicles, including a protective cover 1, an encoder 2, and a transmission shaft 3. The protective cover 1 is fixedly mounted on the vehicle body, and an installation chamber is formed within the protective cover 1 to protect the encoder 2. The encoder 2 is disposed within the installation chamber and can be fixedly connected to the protective cover 1 or connected to the vehicle body. One end of the transmission shaft 3 is fixedly connected to the driven wheel structure, and the other end extends to the encoder 2 for cooperation. In this application, the transmission shaft 3 is fixedly connected to the driven wheel structure. The number of revolutions of the driven wheel is transmitted to the transmission shaft 3, and then transmitted to the encoder 2 via the transmission shaft 3. The encoder 2 records the number of revolutions of the driven wheel, and the mileage of the AGV vehicle can be calculated, solving the problem of deviation in mileage recording caused by drive wheel slippage.

[0033] Please see Figure 1-7In one embodiment of this utility model, the protective cover 1 may include an integrally fixedly connected main body and a connecting part. The main body has an installation chamber for accommodating the encoder 2. The shape of the installation chamber matches the shape of the encoder 2; for example, the installation chamber may be cylindrical. The connecting part has several connecting holes, and the connecting part is fixedly connected to the vehicle body via fasteners. The connecting holes may be oblong holes for easier installation. The fasteners may be screws, bolts, etc.; for example, the fasteners may be hexagonal head bolts. Furthermore, a flat washer is provided between the bolt and the connecting part to ensure connection stability. The shape of the main body is selected according to actual conditions; for example, the main body is a cylindrical structure open at one end. Further, an avoidance notch is provided at the end of the main body away from the connecting part to avoid obstructing the related structures of the encoder 2.

[0034] Please see Figure 1-7 In one embodiment of this utility model, the passive wheel structure mainly includes an axle 4, a wheel body 5, and an end cap 6. The axle 4 is fixedly connected to the vehicle body, and the wheel body 5 is rotatably mounted on the axle 4. A rolling bearing is provided between the wheel body 5 and the axle 4, and a spacer 7 is provided between the two rolling bearings. One end of the axle 4 can be used to limit the wheel body 5 using a stop washer 8, a spacer 9, and a round nut 10. The end cap 6 is fixedly mounted on the wheel body 5. Specifically, the end cap can be fixedly connected to the wheel body 5 using hexagonal head bolts. An adjusting shim 12 can be provided between the end cap and the wheel body 5 to compensate for the gap between them.

[0035] Please see Figure 1-7 In one embodiment of this utility model, a transmission chamber may be formed inside the axle 4, and the transmission shaft 3 is disposed inside the transmission chamber and coaxially arranged with the axle 4. A bearing is provided between the axle 4 and the transmission shaft 3. Specifically, a bearing may be provided at each end of the internal space of the axle 4 to support the transmission shaft 3.

[0036] Please see Figure 1-7In one embodiment of this utility model, one end of the axle 4 is fixedly connected to the end cover 6, and the other end is engaged with the encoder 2. The connection method between the transmission shaft 3 and the end cover 6 can be selected according to the actual situation. As an example, a transmission ring 11 is fixedly connected to the end of the transmission shaft 3 away from the encoder 2, and the transmission ring 11 is fixedly connected to the end cover 6 by a locking member. The locking member can be an internal hex bolt. The transmission shaft 3 and the transmission ring 11 are tightly fixed together. That is, the fixing ring (such as a shrink sleeve, clamping ring, elastic sleeve, etc.) evenly wraps around the transmission shaft 3 through its own elastic deformation or mechanical external force, generating radial pressure, thereby achieving: keyless connection: no keyway or spline is needed, avoiding weakening the shaft strength. High concentricity: uniform force ensures the coaxiality of the shaft and the fixing ring. Anti-loosening: friction resists axial or torsional loads. As an example, a notch can be opened on the transmission ring 11, and then a bolt structure can be used to pass through the ring body of the fixing ring on both sides of the notch, and then the bolt is tightened to make the fixing ring hold the transmission shaft 3 tightly.

[0037] The working principle of this utility model:

[0038] In this application, the transmission shaft 3 is fixedly connected to the driven wheel structure. The number of revolutions of the driven wheel is transmitted to the transmission shaft 3, and then transmitted to the encoder 2 via the transmission shaft 3. The encoder 2 records the number of revolutions of the driven wheel, and the mileage of the AGV vehicle can be calculated, thus solving the problem of deviation in mileage recording caused by drive wheel slippage. Simultaneously, a protective cover 1 is provided to house the encoder 2, effectively protecting it.

[0039] The foregoing has provided a detailed description of one embodiment of the present invention, but the description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the scope of the claims of the present invention.

[0040] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A mileage measuring device for AGV models, characterized in that, include: A protective cover, which is fixedly mounted on the vehicle body, has an installation chamber inside. An encoder, wherein the encoder is disposed within the mounting cavity; A transmission shaft, one end of which is fixedly connected to the passive wheel structure, and the other end extends to the encoder position.

2. The mileage measuring device for AGV models according to claim 1, characterized in that, The protective cover includes a main body and a connecting part that are fixedly connected. The main body has an installation chamber, and the connecting part has several connecting holes. The connecting part is fixedly installed and connected to the vehicle body through fasteners.

3. The mileage measuring device for AGV models according to claim 2, characterized in that, The main body has a cylindrical structure.

4. The mileage measuring device for AGV models according to claim 3, characterized in that, An avoidance notch is provided at the end of the main body away from the connecting part.

5. The mileage measuring device for AGV models according to claim 1, characterized in that, The passive wheel structure includes an axle, a wheel body, and an end cap. The wheel body is rotatably mounted on the axle, and the end cap is fixedly mounted on the wheel body.

6. The mileage measuring device for AGV models according to claim 5, characterized in that, A transmission chamber is provided inside the axle, and the transmission shaft is disposed inside the transmission chamber and is coaxial with the axle.

7. The mileage measuring device for AGV models according to claim 6, characterized in that, A bearing is provided between the axle and the transmission shaft.

8. A mileage measuring device for AGV models according to claim 7, characterized in that, One end of the axle is fixedly connected to the end cover, and the other end is engaged with the encoder.

9. A mileage measuring device for AGV models according to claim 8, characterized in that, A transmission ring is fixedly connected to the end of the transmission shaft away from the encoder, and the transmission ring is fixedly connected to the end cover by a locking component.

10. A mileage measuring device for AGV models according to claim 9, characterized in that, The transmission shaft is tightly fixed to the transmission ring.

Images