Special micron-sized repeated positioning heavy-load RGV (Reactive Guided Vehicle) for three-coordinate measuring machine
By setting up chutes, engaging blocks and expansion board structures on the RGV car, combined with the mechanical positioning of precise positioning of the cylinder and fixed pins, the problems of insufficient space and inaccurate positioning of the RGV car platform are solved, and stable loading and precise positioning of large items are achieved.
Patent Information
- Application Number
- CN202422486830.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-15
AI Technical Summary
When existing RGV trolleys carry items with too large volume, the loading platform is insufficient, causing the items to be suspended, affecting the stability of the vehicle. In addition, existing positioning methods such as laser positioning and barcode positioning have problems such as blind spots or reduced accuracy.
By setting up chutes, engaging blocks, expansion boards and universal wheel structures on the storage platform of the RGV car, the expansion of the load platform is achieved, and a mechanical positioning method of precisely positioning the cylinder, fixed pins and guide holes is adopted to ensure stability and precise positioning.
The RGV car has achieved stable loading of large items, expanded the load space, improved the accuracy and reliability of positioning, and avoided the risks of items hanging and rolling over.
Smart Images
Figure CN223086025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heavy-duty RGV cars, in particular to a micron-level repetitive positioning heavy-duty RGV car dedicated to a three-coordinate measuring machine. Background Technique
[0002] In order to save manpower and time, now many simple mechanical jobs are replaced by machines instead of humans. Especially for heavy jobs like handling, in order to make the goods reach the designated location, most factories use RGV rail-guided vehicles. The RGV rail-guided vehicle can travel along the track according to the designated route, which can save a lot of manpower. It can not only handle goods, but also accurately measure the three-dimensional data of the size of the handled goods through the Zeiss three-coordinate measuring machine installed on the placement platform.
[0003] When the existing RGV cars load items that are too large in volume, the platform space on the vehicle is limited and the space of the load-carrying platform cannot be freely expanded. When handling larger items, there is a problem that the items are suspended, which affects the running stability of the vehicle and there is a risk of the goods tipping over. The existing RGV cars generally use laser positioning or bar code positioning for positioning. However, bar code positioning has high requirements for application scenarios, and over time, the accuracy of bar code positioning will decrease. Laser positioning has blind spots and low reliability. Therefore, a micron-level repetitive positioning heavy-duty RGV car dedicated to a three-coordinate measuring machine is proposed for the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to provide a micron-level repetitive positioning heavy-duty RGV car dedicated to a three-coordinate measuring machine to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A micron-level repetitive positioning heavy-duty RGV car dedicated to a three-coordinate measuring machine, including the ground. Above the ground, there are wheels. At the top of the wheels, there is a vehicle body. At the top of the vehicle body, there is a placement platform fixedly connected. On both sides of the placement platform, there are chutes located at the edges. Inside the chutes, there are snap blocks engaged. On the top of the placement platform, there are first fixing holes located inside the chutes. On the top of the snap blocks, there are second fixing holes. On the side of the snap block away from the placement platform, there is an extension plate fixedly connected. At the bottom of the extension plate, there are four universal wheels located at the edges. Inside the first fixing holes and the second fixing holes, there are bolts engaged. At the bottom of the bolts, there are nuts screwed below the snap blocks.
[0007] Preferably, three fixing grooves are formed at the top of the ground. A precise positioning cylinder is fixedly connected inside the fixing groove. A fixing pin is fixedly connected to the top of the precise positioning cylinder. Three guiding holes are formed at the bottom end of the vehicle body.
[0008] Preferably, the number of the wheels is four, and they are symmetrically arranged on the surface of the vehicle body. The number of the sliding grooves is four, and they are symmetrically arranged on the surface of the vehicle body in the up-down, left-right directions.
[0009] Preferably, the positions of the guiding holes and the fixing pins correspond to each other in a vertical relationship. The shapes of the guiding holes and the fixing pins are both frustum-shaped. The inner size of the guiding hole is the same as the outer size of the fixing pin.
[0010] Preferably, the engaging block and the extension plate are a set, and there are two sets in total. They are symmetrically arranged on the surface of the storage platform with the storage platform as the center.
[0011] Preferably, the first fixing hole, the second fixing hole, the bolt and the nut are a set, and there are four sets in total. The inner diameters of the first fixing hole and the second fixing hole are the same as the outer diameter of the bolt.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. In the present utility model, through components such as the storage platform, the sliding groove, the first fixing hole, the second fixing hole, the engaging block, the extension plate, the universal wheel, the bolt and the nut, first align the engaging block with the sliding groove. It can be done from any end of the storage platform. After alignment, engage the engaging block with the sliding groove. After engaging, push the extension plate to drive the engaging block to move in the sliding groove until the extension plate is flush with the storage platform. At this time, the first fixing hole and the second fixing hole just coincide. Then insert four bolts respectively, and then connect the nut and the bolt to fixedly connect the extension plate and the storage platform together, thereby expanding the loading space of the RGV vehicle. The universal wheel provided can give better support force to the extension plate, thus solving the problem that in the existing RGV vehicle, when loading items with too large volume, the platform space on the vehicle is limited and the space of the loading platform cannot be freely expanded. When carrying larger items, there is a problem that the items are suspended, which affects the running stability of the vehicle and there is a problem of cargo tipping over.
[0014] 2. In the present utility model, components such as a fixed groove, a precise positioning cylinder, a fixing pin, and a guiding hole are provided. The RGV cart is detected by a sensor externally arranged. When the RGV cart arrives in place, the sensor controls the precise positioning cylinder to start. The fixing pin in the shape of a fixed frustum is driven by the precise positioning cylinder to rise. The fixing pin enters into the frustum-shaped guiding hole, and the body is mechanically positioned and fixed through the fixing pin and the guiding hole. The mechanical positioning method is more stable and accurate, thus solving the problems that the existing RGV carts generally use laser positioning or bar code positioning for positioning. However, bar code positioning has high requirements for application scenarios, and with the passage of time, the accuracy of bar code positioning will decrease, and laser positioning has blind areas and low reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0016] Figure 2 is a schematic diagram of the bottom view structure of the present utility model;
[0017] Figure 3 is a schematic diagram of the detailed left view structure of the present utility model;
[0018] Figure 4 is a schematic diagram of the detailed bottom view structure of the present utility model.
[0019] In the figure: 1, ground; 2, fixed groove; 3, precise positioning cylinder; 4, fixing pin; 5, wheel; 6, body; 7, storage platform; 8, sliding groove; 9, first fixing hole; 10, engaging block; 11, second fixing hole; 12, extension plate; 13, universal wheel; 14, bolt; 15, nut; 16, guiding hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above terms have no special meaning, so it should not be construed as a limitation on the protection scope of the present invention.
[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution:
[0024] A special micron-level repeat positioning heavy-load RGV cart for a three-coordinate measuring machine, including a ground 1, wheels 5 are provided above the ground 1, a vehicle body 6 is provided at the top of the wheels 5, a storage platform 7 is fixedly connected to the top of the vehicle body 6, sliding grooves 8 located at the edges are opened at both side ends of the storage platform 7, engaging blocks 10 are engaged and connected inside the sliding grooves 8, a first fixing hole 9 located inside the sliding grooves 8 is opened at the top of the storage platform 7, a second fixing hole 11 is opened at the top of the engaging block 10, an extension plate 12 is fixedly connected to the side of the engaging block 10 away from the storage platform 7, four universal wheels 13 located at the edges are fixedly connected to the bottom end of the extension plate 12, a bolt 14 is engaged and connected inside the first fixing hole 9 and the second fixing hole 11, and a nut 15 located below the engaging block 10 is screwed to the bottom end of the bolt 14.
[0025] Three fixing grooves 2 are opened at the top of the ground 1, a precise positioning cylinder 3 is fixedly connected inside the fixing grooves 2, a fixing pin 4 is fixedly connected to the top of the precise positioning cylinder 3, three guiding holes 16 are opened at the bottom end of the vehicle body 6, the number of the wheels 5 is four, and they are symmetrically arranged on the surface of the vehicle body 6, the number of the sliding grooves 8 is four, and they are symmetrically arranged in the up-down, left-right directions on the surface of the vehicle body 6, the positions of the guiding holes 16 and the fixing pins 4 correspond one by one in the up-down relationship, the shapes of the guiding holes 16 and the fixing pins 4 are both frustum-shaped, the inner size of the guiding holes 16 is the same as the outer size of the fixing pins 4, the engaging blocks 10 and the extension plates 12 are in a group, and there are two groups in total, and they are symmetrically arranged on the surface of the storage platform 7 with the storage platform 7 as the center, the first fixing hole 9, the second fixing hole 11, the bolt 14 and the nut 15 are in a group, and there are four groups in total, and the inner diameter of the first fixing hole 9 and the second fixing hole 11 is the same as the outer diameter of the bolt 14.
[0026] Workflow: When the special micron-level repeat positioning heavy-load RGV cart for coordinate measuring machines is needed, the overall device is powered by a flexible cable drag chain using existing technology. The wheels 5 are set to run on the track provided on the surface of the ground 1. When encountering goods with too large a volume, first align the clamping block 10 with the sliding groove 8. It can be done from either end of the placement platform 7. After alignment, engage the clamping block 10 with the sliding groove 8. After engaging, push the extension plate 12 to drive the clamping block 10 to move within the sliding groove 8 until the extension plate 12 is flush with the placement platform 7. At this time, the first fixing hole 9 and the second fixing hole 11 exactly coincide. Then insert four bolts 14 respectively, and then connect the nut 15 with the bolt 14 to fixedly connect the extension plate 12 and the placement platform 7 together, thereby expanding the load-carrying space of the RGV cart. The universal wheels 13 provided can give better support to the extension plate 12. When the RGV cart reaches the designated position, it is detected by a sensor set externally. When the RGV cart is in place, the sensor controls the precise positioning cylinder 3 to start. The fixed pin 4 in the shape of a fixed frustum is driven to rise by the precise positioning cylinder 3. The fixed pin 4 enters the frustum-shaped guiding hole 16, and the body 6 is mechanically positioned and fixed through the fixed pin 4 and the guiding hole 16.
[0027] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Plus, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.
[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A micron-level repeat positioning heavy-load RGV cart dedicated to a three-coordinate measuring machine, including the ground (1), characterized in that: Above the ground (1), there is a wheel (5). At the top of the wheel (5), there is a vehicle body (6). At the top of the vehicle body (6), there is a storage platform (7) fixedly connected. On both side ends of the storage platform (7), there are chutes (8) located at the edges. Inside the chutes (8), there are engaging blocks (10) engaged and connected. At the top of the storage platform (7), there are first fixing holes (9) located inside the chutes (8). At the top of the engaging block (10), there are second fixing holes (11). On the side of the engaging block (10) away from the storage platform (7), there is an extension board (12) fixedly connected. At the bottom of the extension board (12), there are four universal wheels (13) located at the edges. Inside the first fixing hole (9) and the second fixing hole (11), there is a bolt (14) engaged and connected. At the bottom of the bolt (14), there is a nut (15) screwed and connected below the engaging block (10).
2. A micron-level repeat positioning heavy-load RGV cart dedicated to a three-coordinate measuring machine according to claim 1, characterized in that: On the top of the ground (1), there are three fixing grooves (2) opened. Inside the fixing grooves (2), there is a precise positioning cylinder (3) fixedly connected. At the top of the precise positioning cylinder (3), there is a fixing pin (4) fixedly connected. At the bottom of the vehicle body (6), there are three guiding holes (16) opened.
3. The micron-level repeat positioning heavy-load RGV vehicle dedicated to a three-coordinate measuring machine according to claim 2, characterized in that: The number of the wheels (5) is four, and they are symmetrically arranged on the surface of the vehicle body (6). The number of the chutes (8) is four, and they are symmetrically arranged in the up-down, left-right directions on the surface of the vehicle body (6).
4. A micron-level repeat positioning heavy-load RGV cart dedicated to a three-coordinate measuring machine according to claim 2, characterized in that: The positions of the guiding holes (16) and the fixing pins (4) correspond one by one in the up-down relationship. The shapes of the guiding holes (16) and the fixing pins (4) are both frustum-shaped. The inner size of the guiding holes (16) is the same as the outer size of the fixing pins (4).
5. A micron-level repeat positioning heavy-duty RGV cart dedicated to a three-coordinate measuring machine according to claim 1, characterized in that: The engaging blocks (10) and the extension boards (12) are in a group, and there are two groups in total. They are symmetrically arranged on the surface of the storage platform (7) with the storage platform (7) as the center.
6. A micron-level repeat positioning heavy-duty RGV cart dedicated for a three-coordinate measuring machine according to claim 1, characterized in that: The first fixing holes (9), the second fixing holes (11), the bolts (14) and the nuts (15) are in a group, and there are four groups in total. The inner diameters of the first fixing holes (9) and the second fixing holes (11) are the same as the outer diameter of the bolts (14).