Testing tool of OHT trolley

Abstract

The utility model discloses a testing tool of an OHT dolly, which relates to the technical field of testing tools and comprises a base, a support is installed at the rear end of the base, a linear module is installed at the upper end of the base, a placing plate is installed at the moving end of the linear module, a sensor is installed on the placing plate, and the sensor is connected with the linear module. Two guide rails distributed front and back are arranged on the front side of the support, a plurality of fixing plates distributed in a linear array are installed at the ends, far away from each other, of the two guide rails, and the two guide rails can be far away from each other or close to each other, so that the OHT trolleys with different rail wheel distances are supported. According to the utility model, the distance between the guide rails can be adjusted through the cooperation of the moving part and the fixed plate, test tools of other sizes do not need to be replaced, the use cost is reduced, the application range is improved, the distance between the guide rails can be measured through the linear displacement sensor, a worker can conveniently and rapidly adjust, and the working efficiency is improved. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing tooling, in particular to a testing tooling for an OHT vehicle. Background Art

[0002] The OHT trolley, or Overhead Hoist Transport, is an intelligent mobile robot that travels on overhead tracks. It is designed to improve logistics efficiency, reduce labor costs, and minimize pollution risks. Using a belt-driven lifting mechanism, this trolley can directly access the loading and unloading ports of storage or process equipment, enabling transportation within process areas, between sections, or between factories. The OHT trolley system adopts a modular design and consists of a rail trolley, standard rail components, a rail switching unit, a vehicle maintenance unit, etc. The entire system is dispatched by intelligent scheduling and monitoring software and can be customized according to customer and on-site construction needs.

[0003] The prior art (Announcement No.: CN 220437773 U) discloses a test fixture for an OHT trolley, which relates to the field of OHT debugging devices. It includes a test frame, a positioning and locking device, a sensor test device, a material handling benchmark test device and a test track; the test track is used to carry the OHT trolley; the positioning and locking device is connected to the test track, and a test station is provided on the test track. The positioning and locking device is used to position and lock the OHT trolley on the test station; the sensor test device is used to test whether the reading function of each sensor on the OHT trolley is normal and whether the installation is in place; the material handling benchmark test device is used to test whether the extension length of the lateral telescopic device on the OHT trolley and the lifting height of the clamping device are in place.

[0004] Although the above patent enables the OHT trolley to complete the testing of multiple projects at one time by setting up a sensor testing device and a material loading and unloading reference testing device, so that it can be put into use quickly, it has the following disadvantages: when in use, the spacing between the test tracks cannot be adjusted. When the spacing between the front and rear track wheels on the OHT trolley is too large, the trolley cannot be placed on the test tooling, and it is necessary to replace tooling of other sizes, which increases the cost of use and has a low scope of application. Further improvement is needed. For this reason, a test tooling for an OHT trolley is proposed. Utility Model Content

[0005] The main purpose of the utility model is to provide a test fixture for an OHT vehicle, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A test fixture for an OHT trolley includes a base, a bracket installed at the rear end of the base, a linear module installed at the upper end of the base, a placement plate installed at the movable end of the linear module, a sensor installed on the placement plate, and two guide rails distributed front and back are provided on the front side of the bracket. A plurality of fixed plates distributed in a linear array are installed at the ends of the two guide rails that are away from each other. The two guide rails can move away from or closer to each other, thereby supporting OHT trolleys with different track wheel spacings.

[0008] Preferably, the upper ends of the two front and rear fixed plates are both equipped with a moving component, and the moving component is used to adjust the distance between the two guide rails; the moving component includes a positive and negative threaded rod, and the outer surface of the positive and negative threaded rod is threadedly sleeved with two moving blocks symmetrically distributed front and back, and a guide rod is commonly sleeved between the two moving blocks, and the front and rear moving blocks are respectively fixed on the two adjacent front and rear fixed plates.

[0009] Preferably, the plurality of forward and reverse threaded rods rotate synchronously.

[0010] Preferably, a vertical plate is installed at the front end of the bracket, a motor is installed at the front end of the vertical plate, a worm is fixedly connected to the output end of the motor, and a plurality of worm wheels are meshedly connected to the outer surface of the worm.

[0011] Preferably, the front ends of the plurality of forward and reverse threaded rods are movably inserted into the front end of the vertical plate, and the plurality of worm gears are respectively installed at the front ends of the plurality of forward and reverse threaded rods.

[0012] Preferably, the left end of the worm is movably connected to a bearing seat, and the bearing seat is installed on the vertical plate.

[0013] Preferably, the rear end of the forward and reverse threaded rod is movably connected to the bracket, and the front and rear ends of the guide rod are movably connected to the bracket and the vertical plate respectively.

[0014] Preferably, a connecting plate is installed at the left end of the rear guide rail, a linear displacement sensor is installed at the left end of the front guide rail, a measuring end of the linear displacement sensor is fixedly connected to the connecting plate, and a display is installed on the linear displacement sensor.

[0015] Preferably, two cylinders are installed at the lower end of the front guide rail, and the output ends of the two cylinders are movably inserted into the upper end of the guide rail.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The distance between the guide rails can be adjusted by arranging the moving parts and the fixed plates to cooperate with each other. When the front and rear distance of the trolley track wheels is too large, the forward and reverse threaded rods are rotated, and the forward and reverse threaded rods drive the two moving blocks to move away from each other. The two moving blocks respectively drive the two fixed plates to move away from each other, and the two fixed plates drive the two guide rails to move away from each other. This makes it convenient for the trolley to be placed on the guide rails for walking, without the need to replace the test fixtures of other sizes, reducing the cost of use and increasing the scope of application.

[0018] 2. By setting up a linear displacement sensor, the distance between the guide rails can be measured. When the two guide rails move relative to each other, the guide rail drives the measuring end of the linear displacement sensor to move through the connecting plate. The linear displacement sensor can generate an electrical signal and transmit it to the display for display. The distance between the guide rails can be understood, which facilitates the staff to make quick adjustments and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the entire structure proposed in this embodiment;

[0020] Figure 2 Schematic diagram of the structure of the guide rail in this embodiment;

[0021] Figure 3 Schematic diagram of the structure of the moving parts in this embodiment;

[0022] Figure 4 Schematic diagram of the structure of the vertical plate in this embodiment.

[0023] In the figure: 1. Bracket; 2. Base; 3. Linear module; 4. Placement plate; 5. Sensor; 6. Guide rail; 7. Cylinder; 8. Vertical plate; 9. Connecting plate; 10. Linear displacement sensor; 11. Display; 12. Fixed plate; 13. Moving part; 131. Moving block; 132. Forward and reverse threaded rod; 133. Guide rod; 14. Motor; 15. Worm; 16. Bearing seat; 17. Worm gear. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1-4 As shown, a test fixture for an OHT trolley includes a base 2, a bracket 1 is installed at the rear end of the base 2, a linear module 3 is installed at the upper end of the base 2, a placement plate 4 is installed at the movable end of the linear module 3, the linear module 3 is used to drive the placement plate 4 to move, thereby adjusting the position of the test grasping, a sensor 5 is installed on the placement plate 4, and two guide rails 6 distributed front and back are provided on the front side of the bracket 1. The guide rails 6 are located above the placement plate 4, and a plurality of fixed plates 12 distributed in a linear array are installed at the ends of the two guide rails 6 away from each other. When in use , place the rail wheels of the OHT trolley on the two guide rails 6, place the test workpiece on the placement plate 4, control the OHT trolley to move, when the infrared rays generated by the OHT trolley are received by the sensor 5, the OHT trolley stops moving, and controls the OHT trolley to grab the workpiece, thereby testing whether the OHT trolley can accurately grab the workpiece. However, when the distance between the front and rear rail wheels on the OHT trolley is too large, the trolley cannot be placed on the test fixture, and it is necessary to replace the fixture of other sizes, which increases the cost of use and has a low scope of application.

[0028] The two movable blocks 131 are respectively fixed on the two adjacent front and rear fixed plates 12. When the front and rear distance of the trolley track wheels is too large, the positive and negative threaded rods 132 are rotated, and the positive and negative threaded rods 132 drive the two movable blocks 131 to move away from each other, and the two movable blocks 131 respectively drive the two fixed plates 12 to move away from each other, and the two fixed plates 12 drive the two guide rails 6 to move away from each other, so that the trolley can be placed on the guide rail 6 for walking without replacing test fixtures of other sizes, thereby reducing the cost of use and improving the scope of application.

[0029] In order to ensure that the guide rail 6 can move stably, several forward and reverse threaded rods 132 rotate synchronously, a vertical plate 8 is installed at the front end of the bracket 1, and a motor 14 is installed at the front end of the vertical plate 8. The output end of the motor 14 is fixedly connected to a worm 15, and the worm gear 17 and the worm 15 are self-locking. The outer surface of the worm 15 is meshed with several worm gears 17, and the front ends of several forward and reverse threaded rods 132 are movably inserted into the front end of the vertical plate 8. Several worm gears 17 are respectively installed at the front ends of several forward and reverse threaded rods 132. The left end of the worm 15 is movably connected to a bearing seat 16, which is used to support the rotation of the worm 15. The bearing seat 16 is installed on the vertical plate 8. During adjustment, the motor 14 is controlled to drive the worm 15 to rotate, and the worm 15 drives several worm gears 17 to rotate, and several worm gears 17 simultaneously drive several forward and reverse threaded rods 132 to rotate synchronously.

[0030] The rear end of the forward and reverse threaded rod 132 is movably connected to the bracket 1 through a bearing, and the front and rear ends of the guide rod 133 are movably connected to the bracket 1 and the vertical plate 8 respectively. The guide rod 133 is used to guide the movement of the moving block 131.

[0031] In addition, when adjusting the distance between the guide rails 6, it is necessary to measure the distance between the two guide rails 6 to ensure that the trolley can be placed on the guide rails 6. In order to quickly understand the distance between the guide rails 6 and facilitate the staff to quickly adjust, a connecting plate 9 is installed at the left end of the rear guide rail 6, and a linear displacement sensor 10 is installed at the left end of the front guide rail 6. The measuring end of the linear displacement sensor 10 is fixedly connected to the connecting plate 9, and a display 11 is installed on the linear displacement sensor 10. When the two guide rails 6 move relative to each other, the guide rail 6 drives the measuring end of the linear displacement sensor 10 to move through the connecting plate 9, and the linear displacement sensor 10 can generate an electrical signal and transmit it to the display 11 for display, which can be quickly adjusted according to the size of the trolley track wheel to improve work efficiency.

[0032] In order to prevent the trolley from falling off the guide rail 6, two cylinders 7 are installed at the lower end of the front guide rail 6. The output ends of the two cylinders 7 are movably inserted into the upper end of the guide rail 6. During testing, the output ends of the control cylinders 7 are extended to limit the moving position of the trolley.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A test fixture for an OHT vehicle, comprising a base (2), characterized in that: A bracket (1) is installed at the rear end of the base (2), a linear module (3) is installed at the upper end of the base (2), a placement plate (4) is installed at the movable end of the linear module (3), a sensor (5) is installed on the placement plate (4), and two guide rails (6) distributed front and back are provided on the front side of the bracket (1), and a plurality of fixed plates (12) distributed in a linear array are installed at the ends of the two guide rails (6) that are away from each other. The two guide rails (6) can be moved away from or close to each other, thereby supporting OHT trolleys with different track wheel spacings.

2. The OHT vehicle test fixture according to claim 1, characterized in that: The upper ends of the front and rear fixed plates (12) are both equipped with a movable component (13), and the movable component (13) is used to adjust the distance between the two guide rails (6); The moving component (13) comprises a forward and reverse threaded rod (132), the outer surface of the forward and reverse threaded rod (132) is threadedly sleeved with two moving blocks (131) symmetrically distributed front and rear, a guide rod (133) is sleeved between the two moving blocks (131), and the front and rear moving blocks (131) are respectively fixed on two adjacent front and rear fixed plates (12).

3. The OHT vehicle test fixture according to claim 2, characterized in that: The plurality of forward and reverse threaded rods (132) rotate synchronously.

4. The OHT vehicle test fixture according to claim 3, characterized in that: A vertical plate (8) is installed at the front end of the bracket (1), a motor (14) is installed at the front end of the vertical plate (8), a worm (15) is fixedly connected to the output end of the motor (14), and the outer surface of the worm (15) is meshedly connected to a plurality of worm wheels (17).

5. The OHT vehicle test fixture according to claim 4, characterized in that: The front ends of the plurality of forward and reverse threaded rods (132) are movably inserted into the front end of the vertical plate (8), and the plurality of worm wheels (17) are respectively installed at the front ends of the plurality of forward and reverse threaded rods (132).

6. The OHT vehicle test fixture according to claim 4, characterized in that: The left end of the worm (15) is movably connected to a bearing seat (16), and the bearing seat (16) is installed on the vertical plate (8).

7. The OHT vehicle test fixture according to claim 4, characterized in that: The rear end of the forward and reverse threaded rod (132) is movably connected to the bracket (1), and the front and rear ends of the guide rod (133) are movably connected to the bracket (1) and the vertical plate (8) respectively.

8. The OHT vehicle test fixture according to claim 1, characterized in that: A connecting plate (9) is installed at the left end of the guide rail (6) on the rear side, and a linear displacement sensor (10) is installed at the left end of the guide rail (6) on the front side. The measuring end of the linear displacement sensor (10) is fixedly connected to the connecting plate (9), and a display (11) is installed on the linear displacement sensor (10).

9. The OHT vehicle test fixture according to claim 1, characterized in that: Two cylinders (7) are installed at the lower end of the guide rail (6) on the front side, and the output ends of the two cylinders (7) are movably inserted into the upper end of the guide rail (6).

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