Double-track heavy load EMS trolley

Abstract

This utility model discloses a dual-track heavy-duty EMS trolley, belonging to the field of aerial transport technology. The wheel-walking mechanism includes a rectangular frame, a drive shaft rotatably mounted on the rectangular frame, a drive wheel at the end of the drive shaft, and two driven wheels mounted on the rectangular frame via bearing seats. A drive mechanism for driving the drive shaft is mounted on the rectangular frame, and multiple L-shaped frames are provided on the rectangular frame to keep the trolley on the track. This application adopts a drive wheel and driven wheel distribution structure of the wheel-walking mechanism, combined with the rigid support of the rectangular frame, to evenly distribute the cargo load to the track support points, solving the problem of spreader skewing caused by uneven load distribution in single-track EMS trolleys. The L-shaped frames and limiting rollers limit lateral deviation, and the buffer assembly achieves mechanical stopping through nylon block buffer sections. Multiple protections prevent operational swaying and rigid collisions, significantly reducing safety hazards and ensuring stable and reliable transport of heavy-duty goods.

Description

Technical Field

[0001] This utility model belongs to the field of aerial transport technology, and in particular to a dual-track heavy-duty EMS trolley. Background Technology

[0002] EMS (Electronic Material Handling System) is a typical aerial mechanical conveying mechanism. Compared with ground conveying systems, it can make full use of workshop space and transport goods at different heights. It uses lifting devices to raise and lower workpieces, forming a three-dimensional conveying network. In the automotive manufacturing industry, it is commonly used for conveying goods between welding, painting, and final assembly lines. Currently, monorail EMS trolleys are widely used. However, their carrying capacity is limited because most monorail EMS trolleys are designed with a front-to-rear "I" shape. Due to this load distribution, the accuracy of loading and unloading is crucial. If the placement of goods is off, it can cause the lifting equipment to tilt, posing a significant safety hazard on site. Utility Model Content

[0003] Purpose of the utility model: To provide a dual-track heavy-duty EMS trolley to solve the above-mentioned problems existing in the prior art.

[0004] Technical solution: A dual-track heavy-duty EMS trolley includes: a wheel travel mechanism, a controller assembly and a lifting assembly installed at the lower end of the wheel travel mechanism, the wheel travel mechanism including a rectangular frame, a drive shaft rotatably mounted on the rectangular frame, a drive wheel at the end of the drive shaft, two driven wheels mounted on the rectangular frame through bearing seats, a drive mechanism for driving the drive shaft to rotate installed on the rectangular frame, and multiple L-shaped frames for keeping the trolley on the track on the rectangular frame.

[0005] Furthermore, the L-shaped frame is equipped with guide wheels for positioning and guidance.

[0006] Furthermore, buffer components are provided at both ends of the rectangular frame to protect the equipment in the event of control failure and prevent serious collisions between adjacent devices.

[0007] Furthermore, the buffer assembly includes: a fixed base, on which the rectangular frame is provided, and a buffer mounting body is threadedly connected to the fixed base, and a buffer part is installed on the buffer mounting body.

[0008] Furthermore, the lifting assembly is connected to the wheel travel mechanism by welding.

[0009] Furthermore, the lifting assembly is fixedly connected to the wheel travel mechanism via a connecting part.

[0010] Furthermore, the connecting part includes clamping plates, and multiple clamping plates clamp the wheel traveling mechanism and the lifting assembly through multiple connecting screws, and are locked and fixed by nuts.

[0011] Furthermore, the driving mechanism includes: a drive motor, which is mounted on the rectangular frame; a driven gear is provided on the drive shaft; a driving gear is installed at the output end of the drive motor; and the driving gear and the driven gear are connected by a chain.

[0012] Furthermore, the rectangular frame is provided with a protective plate to protect the drive wheel and the driven wheel.

[0013] Furthermore, the lifting assembly is an electric lifting hoist.

[0014] Beneficial effects: This application adopts a drive wheel and driven wheel distribution structure for the wheel-walking mechanism, combined with the rigid support of a rectangular frame, to evenly distribute the cargo load to the track support points, solving the problem of spreader skewing caused by uneven load distribution in monorail EMS trolleys. The L-shaped frame and guide wheels limit lateral offset, and the buffer assembly achieves mechanical stopping through nylon block buffer sections. Multiple layers of protection prevent operational swaying and rigid collisions, significantly reducing safety hazards and ensuring stable and reliable transport of heavy-duty goods.

[0015] This application precisely adjusts the distance between the front and rear vehicles through a controller component. Combined with the lifting points on both vehicles, it eliminates the need for redesigned specialized lifting fixtures to accommodate goods of different sizes. Compared to the limitations of traditional EMS carts that rely on fixed lifting fixtures, this structure overcomes the "machine-only" limitation, meeting the multi-specification workpiece transfer needs of industries such as automotive manufacturing. It reduces equipment replacement and lifting fixture customization costs, and enhances the flexibility of production lines in handling diverse production tasks.

[0016] The drive mechanism of this application uses gear and chain transmission to ensure stable power transmission, and the guard plate protects the wheel body to reduce wear. The connecting part realizes a detachable connection between the walking mechanism and the lifting component through clamping plates and connecting screws, replacing welding methods and facilitating later component replacement and maintenance. The lifting component adopts an electric lifting hoist design, which improves the convenience of operation and lifting accuracy. The overall structural design takes into account heavy load strength and maintenance efficiency, extending the service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 A magnified view of part A in the image; Figure 3 This is a top view of the utility model.

[0018] The attached figures are labeled as follows: 1. Four-wheel walking mechanism; 2. Controller assembly; 3. Lifting assembly; 11. Rectangular frame; 12. Drive shaft; 13. Drive wheel; 14. Drive mechanism; 15. L-shaped frame; 16. Guide wheel; 17. Buffer assembly; 4. Fixed seat; 41. Buffer mounting body; 42. Buffer part; 43. Connecting part; 5. Clamping plate; 51. Connecting screw; 52. Drive motor; 151. Driven gear; 152. Drive gear; 153. Chain; 154. Guard plate; 18. Detailed Implementation

[0019] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0020] like Figures 1-3 As shown, a dual-track heavy-duty EMS trolley includes: a four-wheel walking mechanism 1, with a controller assembly 2 and a lifting assembly 3 mounted on its lower end; the four-wheel walking mechanism 1 includes a rectangular frame 11, a drive shaft 12 rotatably mounted on the rectangular frame 11, drive wheels 13 at both ends of the drive shaft 12, and two driven wheels 14 mounted on the rectangular frame 11 via bearing seats; a drive mechanism 15 for driving the drive shaft 12 to rotate is mounted on the rectangular frame 11; and multiple L-shaped frames 16 for maintaining the trolley on the track are provided on the rectangular frame 11. Each L-shaped frame 16 has at least eight guide wheels 17 that contact the sidewalls of the track. Buffer assemblies 4 are provided at both the front and rear ends of the rectangular frame 11 to prevent contact with adjacent vehicles. The buffer assembly 4 includes: a fixed seat 41, on which the rectangular frame 11 is mounted; a buffer mounting body 42 is threadedly connected to the fixed seat 41; and a buffer part 43 is mounted on the buffer mounting body 42. The lifting assembly 3 is welded to the four-wheel walking mechanism 1. The lifting assembly 3 is fixedly connected to the four-wheel walking mechanism 1 via a connecting part 5. The connecting part 5 includes clamping plates 51, and multiple clamping plates 51 clamp the four-wheel walking mechanism 1 and the lifting assembly 3 via multiple connecting screws 52, and are locked in place by nuts. The drive mechanism 15 includes a drive motor 151, which is mounted on the rectangular frame 11. A driven gear 152 is provided on the drive shaft 12, and a drive gear 153 is installed at the output end of the drive motor 151. The drive gear 153 and the driven gear 152 are connected by a chain 154. A protective plate 18 is provided on the rectangular frame 11 to protect the drive wheel 13 and the driven wheel 14. The lifting assembly 3 is an electric lifting hoist.

[0021] The four-wheel walking mechanism 1, as the core load-bearing and moving component of the trolley, has a rectangular frame 11 welded from profiles and plates, providing stable support for the entire trolley structure and ensuring structural strength under heavy loads. Drive wheels 13 at both ends of the drive shaft 12, driven by the drive mechanism 15, enable the trolley to move actively. Two driven wheels 14 are mounted on the rectangular frame 11 via bearing seats, forming a four-wheel distribution structure with the drive wheels. This structure evenly distributes the load to each support point, effectively avoiding the skew problem caused by uneven load distribution in the monorail trolley, and improving the stability and safety of cargo transportation.

[0022] The controller component 2 is equivalent to the "brain" of the walking vehicle. It is fastened to the four-wheel walking mechanism 1 by screw connection and is responsible for controlling the speed, acceleration, start and stop of the vehicle. At the same time, it can set the distance between the front and rear vehicles according to the size of the transported goods, realize a flexible working mode for transporting multi-specification goods, and solve the drawbacks of traditional EMS vehicles that rely on specific lifting tools and cannot be "multi-purpose".

[0023] The main frame of the lifting assembly 3 is welded from profiles and plates. The motor controlling the lifting is fixed to the frame by screws. The motor controls the lifting of goods by stretching the lifting chain, realizing the conveying needs of workpieces at different heights. Combined with the characteristics of aerial conveying, it forms a three-dimensional conveying network to meet the needs of goods transfer between workshops in industries such as automobile manufacturing. When used as an electric lifting hoist, it can further improve the convenience and reliability of lifting operation.

[0024] The L-shaped frame 16 is mounted on the rectangular frame 11 to maintain the stable movement of the trolley on the track, limit the trolley's lateral deviation, ensure the trolley moves accurately along the track, and improve guidance and safety during operation.

[0025] At least one guide wheel 17 is mounted on the L-shaped frame 16 and contacts the side wall of the track, which further enhances the lateral limiting effect of the trolley on the track, reduces the swaying of the trolley during travel, reduces safety hazards caused by lateral deviation, and ensures stability during heavy-load transportation.

[0026] The buffer assembly 4 is installed at both ends of the rectangular frame 11, including a fixed base 41, a buffer mounting body 42, and a buffer part 43. The buffer part is made of nylon block material, and the built-in threaded holes are fastened by bolts. When the electronic control components fail, it can play a mechanical stopping role, avoiding rigid collisions between the trolley and adjacent vehicles or other objects, reducing the risk of equipment damage, and improving operational safety.

[0027] The connecting part 5 consists of a clamping plate 51 and a connecting screw 52. Multiple clamping plates clamp the four-wheel walking mechanism 1 and the lifting component 3 through the connecting screw and lock them in place with nuts. When replacing the welding connection method, it can enhance the detachability and installation flexibility of the connection between the two, facilitate later maintenance and component replacement, and ensure that the connection strength meets the heavy load requirements.

[0028] The drive mechanism 15 drives the motor 151, which is mounted on the rectangular frame 11. The motor power is transmitted to the drive wheel 13 through the drive gear 153, the chain 154 and the driven gear 152 on the drive shaft 12, so as to realize the power drive of the car. The gear and chain transmission method can ensure the stability and efficiency of power transmission and meet the power requirements under heavy load.

[0029] The guard plate 18 is installed on the rectangular frame 11 to protect the drive wheel 13 and the driven wheel 14, prevent external debris, dust and other objects from entering the wheel body or transmission parts, reduce wheel wear and failure rate, extend the service life of components, and ensure the long-term stable operation of the trolley.

[0030] Startup and Initialization: After the equipment is started, controller component 2 performs an initialization self-check to confirm that the core components such as the four-wheel walking mechanism 1, lifting component 3, and buffer component 4 are in normal condition. The operator inputs the size parameters of the conveyed goods through the control system. The controller automatically calculates and sets the distance between the front and rear vehicles based on the parameters to ensure that the lifting point position matches the goods.

[0031] Cargo hoisting preparation: The lifting assembly 3 uses an electric lifting hoist driven by a motor to lower the lifting device or hook to the cargo hoisting height via chain transmission. At this time, the rectangular frame 11 of the four-wheel walking mechanism 1 is kept stable on the track by the L-shaped frame 16 and guide wheels 17 to avoid lateral deviation caused by the lifting action.

[0032] Cargo Loading and Securing: After the cargo is connected to the lifting assembly 3 of the front and rear carriages via the lifting points, the controller assembly 2 controls the motor of the lifting assembly 3 to rotate in reverse, tightening the chain to lift the cargo to the preset conveying height. During this process, the four-wheel distribution structure of the four-wheel walking mechanism 1 evenly distributes the cargo load onto the track, and with the rigid connection of the connecting part 5, ensures that there is no relative sway between the lifting assembly 3 and the walking mechanism, solving the problem of monorail trolley skew.

[0033] Track conveying operation: The drive mechanism 15 starts, and the drive motor 151 drives the driven gear 152 on the drive shaft 12 to rotate through the drive gear 153 and chain 154. The drive wheel 13 rolls along the track, and the driven wheel 14 assists in walking and shares the load, realizing the overall movement of the trolley along the track. The controller component 2 adjusts the speed and acceleration of the drive motor in real time to ensure that the front and rear vehicles run synchronously and maintain the smooth transport of goods. During this process, the guard plate 18 protects the wheels from external debris and reduces the risk of failure.

[0034] Safety protection during transport: When the trolley reaches a turn or track joint, the L-shaped frame 16 and guide wheels 17 further restrict lateral displacement to ensure accurate running trajectory. In case of emergency causing electronic control failure, the buffer components 4 at the front and rear ends of the rectangular frame 11 can contact the stop structure at the end of the adjacent vehicle or track, and achieve mechanical stopping through the buffering effect of the nylon blocks to avoid rigid collision.

[0035] Cargo unloading and resetting: After the trolley reaches the target position, the controller component 2 controls the drive mechanism 15 to stop operating, and the motor of the lifting component 3 starts to run in the forward direction again, slowly lowering the cargo to the unloading platform. After the cargo is unloaded, the lifting component 3 resets to the initial height. The controller can readjust the distance between the front and rear vehicles according to the needs of the next conveying task, realizing a flexible working mode of "one machine for multiple uses", and preparing to enter the next round of conveying cycle.

[0036] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A dual-track heavy-duty EMS trolley, characterized in that, include: A four-wheel walking mechanism (1) is provided with a controller assembly (2) and a lifting assembly (3) at its lower end. The four-wheel walking mechanism (1) includes a rectangular frame (11). A drive shaft (12) is rotatably mounted on the rectangular frame (11). Drive wheels (13) are provided at both ends of the drive shaft (12). Two driven wheels (14) are mounted on the rectangular frame (11) through bearing seats. A drive mechanism (15) for driving the drive shaft (12) to rotate is mounted on the rectangular frame (11). Multiple L-shaped frames (16) for keeping the vehicle on the track are provided on the rectangular frame (11).

2. The dual-track heavy-duty EMS trolley according to claim 1, characterized in that, The L-shaped frame (16) is equipped with guide wheels (17) for positioning and guiding.

3. The dual-track heavy-duty EMS trolley according to claim 1, characterized in that, The rectangular frame (11) is provided with buffer components (4) at both ends to protect the equipment in the event of control failure and to prevent serious collision accidents between adjacent equipment.

4. A dual-track heavy-duty EMS trolley according to claim 3, characterized in that, The buffer assembly (4) includes: a fixed seat (41), the fixed seat (41) is provided on the rectangular frame (11), the fixed seat (41) is threadedly connected to the fixed seat (41) and the buffer mounting body (42) is installed on the buffer mounting body (42).

5. A dual-track heavy-duty EMS trolley according to claim 1, characterized in that, The lifting assembly (3) is connected to the four-wheel walking mechanism (1) by welding.

6. A dual-track heavy-duty EMS trolley according to claim 1, characterized in that, The lifting assembly (3) is fixedly connected to the four-wheel walking mechanism (1) through the connecting part (5).

7. A dual-track heavy-duty EMS trolley according to claim 6, characterized in that, The connecting part (5) includes clamping plates (51), and multiple clamping plates (51) clamp the four-wheel walking mechanism (1) and the lifting assembly (3) through multiple connecting screws (52), and lock them in place with nuts.

8. A dual-track heavy-duty EMS trolley according to claim 1, characterized in that, The drive mechanism (15) includes: a drive motor (151), which is mounted on the rectangular frame (11), a driven gear (152) is provided on the drive shaft (12), and a driving gear (153) is installed at the output end of the drive motor (151). The driving gear (153) and the driven gear (152) are connected by a chain (154).

9. A dual-track heavy-duty EMS trolley according to claim 4, characterized in that, The rectangular frame (11) is provided with a guard plate (18) to protect the drive wheel (13) and the driven wheel (14).

10. A dual-track heavy-duty EMS trolley according to claim 1, characterized in that, The lifting assembly (3) is an electric lifting hoist.

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