A tray for engine assembly

Abstract

The application discloses an engine assembling tray and belongs to the field of engine assembling. The engine assembling tray comprises a tray base, a bearing is arranged at the middle position of the upper side of the tray base, the inner side of the bearing is fixedly connected with a rotating shaft, the upper side of the rotating shaft is fixedly connected with a tray main body, and lifting rings are welded at the four corners of the upper side of the tray base. The engine assembling tray has the beneficial effect that the placing mechanism is arranged, the independent annular frame placing mechanism is arranged between the tray base and the tray main body, the assembling tool and the engine workpiece are placed in the fixed annular frame, when the motor drives the rotating shaft to rotate and the engine assembling position is adjusted, the annular frame and the internal tool are always kept fixed, the staff does not need to repeatedly rotate the tray to take back the tool, the production line rhythm is effectively guaranteed to be stable, and the assembling process is prevented from being interrupted due to the tool taking.

Description

Technical Field

[0001] This application relates to the field of engine assembly, and more specifically, to a tray for engine assembly. Background Technology

[0002] In the engine assembly production process, the assembly pallet, as a core auxiliary tooling, plays a crucial role in supporting and positioning engine workpieces to ensure the orderly conduct of assembly operations.

[0003] The structure of the engine assembly tray can refer to the engine assembly tray disclosed in Chinese patent document CN214870100U. It consists of a base, an assembly seat, an upper assembly tray, and a lower assembly tray. During assembly, the worker installs the engine on the upper assembly tray and places the parts to be assembled in the placement slots of the lower assembly tray. The control panel activates the upper drive motor, which drives a rotating shaft via a reducer. The rotating shaft, through the upper assembly tray, rotates the engine block, arranging it at a convenient angle for the worker. Simultaneously, the control panel activates the lower drive motor, which rotates the lower assembly tray, moving the parts to a position easily accessible to the worker. The worker then removes the parts from the lower assembly tray and installs them onto the engine block. This method is convenient and quick, solving the problem of workers constantly searching for installation positions when assembling different parts on the engine block, which is time-consuming and labor-intensive.

[0004] In the aforementioned structure, engine assembly requires various specialized tools. For ease of access, workers often temporarily place these tools on the edge of the tray platform. When the tray is rotated to adjust the engine assembly position, the assembly tools on it rotate synchronously. If the worker hasn't yet picked up the required tools, they will move away from the work area with the rotation. When the worker is ready to assemble, the tray must be rotated in the opposite direction to retrieve the tools. This process not only interrupts the assembly flow but also increases the number of unnecessary tray rotations, severely impacting engine assembly efficiency.

[0005] There is currently no engine assembly tray with a separate space for placing tools. Utility Model Content

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] The purpose of this application is to address the shortcomings of existing technologies by providing an engine assembly tray. This solves the problem that in existing technologies, when the tray is rotated to adjust the engine assembly position, the assembly tools on the tray rotate synchronously with the tray. If the operator has not yet picked up the required tools, the tools will move away from the operating area as the tray rotates. When the operator is ready to assemble, the tray must be rotated in the opposite direction to retrieve the tools. This process not only interrupts the assembly process but also increases the number of ineffective tray rotations, severely impacting engine assembly efficiency.

[0008] To achieve the above objectives, this application provides the following technical solution: An engine assembly pallet includes a pallet base, a bearing mounted at the upper center of the pallet base, a rotating shaft fixedly connected to the inner side of the bearing, a pallet body fixedly connected to the upper side of the rotating shaft, lifting rings welded to the four corners of the upper side of the pallet base, a placement mechanism provided above the pallet base, and the placement mechanism including an annular frame connected between the pallet base and the pallet body, a motor mounted on the upper side of the pallet base to the left of the rotating shaft, a worm gear fixedly connected to the right end of the motor's output shaft, a worm wheel fixedly connected to the outer side of the rotating shaft, an upper ball bearing connected to the upper end of the annular frame, a lower ball bearing connected to the lower end of the annular frame, and a partition unit provided inside the annular frame.

[0009] Furthermore, the partition unit is connected to the partition plate inside the annular frame, and an annular plate is fixedly connected above the outer circumferential surface of the inner side of the annular frame. A threaded rod is provided inside the partition plate, and a rotating handle is welded to the upper end of the threaded rod.

[0010] Furthermore, the worm gear meshes with the worm wheel.

[0011] Furthermore, a first annular groove is symmetrically formed on the upper side of the annular frame near the center of the annular frame and on the lower side of the tray body above the annular frame. The outer side of the upper ball is rotatably connected to the inner side of the first annular groove. A second annular groove is symmetrically formed on the lower side of the annular frame near the center of the annular frame and on the upper side of the tray base below the annular frame. The lower ball is rotatably connected to the inner side of the second annular groove.

[0012] Furthermore, a groove is provided above the end of the partition away from the center of the annular frame, the outer side of the annular plate is slidably connected to the inner side of the groove, and the outer side of the partition is slidably connected to the inner side of the annular frame.

[0013] Furthermore, a threaded hole is provided inside the partition above the groove, and the outer side of the threaded rod is threadedly connected to the inner side of the threaded hole.

[0014] Furthermore, the lower end of the threaded rod abuts against the upper side of the annular plate.

[0015] The beneficial effects of this application are as follows: By setting up a placement mechanism, specifically an independent annular frame placement mechanism between the pallet base and the pallet body, assembly tools and engine workpieces are placed in a fixed annular frame. When the motor-driven rotating shaft rotates the pallet body to adjust the engine assembly position, the annular frame and internal tools remain fixed. Workers do not need to repeatedly rotate the pallet to retrieve tools, effectively ensuring stable production line rhythm and avoiding assembly process interruptions caused by tool retrieval.

[0016] By setting up partition units, the sliding fit structure allows the partitions to move flexibly along the 360° circumference of the inner side of the ring frame. Workers can set the partitions at any position inside the ring frame according to the number and size of the tools, making full use of the ring space of the ring frame, avoiding the space waste caused by traditional partition structures, and increasing the tool storage capacity. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0018] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the main structure of this application; Figure 2 This is a schematic diagram of the structure at the upper end of the tray base in this application; Figure 3 This is a schematic diagram of the structure at the rotating shaft of this application; Figure 4 This is a schematic diagram of the internal structure of the annular frame in this application; Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle.

[0020] 1. Pallet base; 2. Bearing; 3. Rotating shaft; 4. Pallet body; 5. Lifting ring; 601. Annular frame; 602. Motor; 603. Worm gear; 604. Worm wheel; 605. Upper ball bearing; 606. Lower ball bearing; 701. Partition plate; 702. Annular plate; 703. Threaded rod; 704. Rotating handle. Detailed Implementation

[0021] The following is a detailed description of an engine assembly tray provided in this application, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0022] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0023] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0024] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Reference Figure 1-4As shown, this utility model provides an engine assembly tray, including a tray base 1. A bearing 2 is installed at the upper middle position of the tray base 1. A rotating shaft 3 is fixedly connected to the inner side of the bearing 2. A tray body 4 is fixedly connected to the upper side of the rotating shaft 3. Lifting rings 5 ​​are welded to the four corners of the upper side of the tray base 1. A placement mechanism is provided above the tray base 1, and the placement mechanism includes an annular frame 601 connecting the tray base 1 and the tray body 4. A motor 602 is installed on the upper side of the tray base 1 to the left of the rotating shaft 3. A worm gear 603 is fixedly connected to the right end of the output shaft of the motor 602, and a worm wheel 604 is fixedly connected to the outer side of the rotating shaft 3. The worm gear 603 meshes with the worm wheel 604. When the output shaft of the motor 602 is started and rotates, it drives the worm gear 603 to rotate, which in turn drives the worm wheel 604 to rotate. This causes the rotating shaft 3 to rotate, which in turn drives the tray body 4 to rotate, allowing the engine mounted on the tray body 4 to rotate to different angles for easy assembly by workers. The reverse transmission efficiency between the worm 603 and the worm wheel 604 is low; the worm 603 can only drive the worm wheel 604 to rotate, but the worm wheel 604 cannot drive the worm 603 to rotate. When the motor 602 stops running, the worm wheel 604 automatically locks to prevent the pallet body 4 from rotating on its own due to the weight of the engine or workpiece or external forces. This prevents accidental rotation of the pallet body 4 during tool handling or assembly, thus further ensuring operational safety.

[0026] The annular frame 601 has an upper ball bearing 605 connected to its upper end and a lower ball bearing 606 connected to its lower end. A first annular groove is symmetrically formed on the upper side of the annular frame 601 near its center and on the lower side of the tray body 4 above the annular frame 601. The outer side of the upper ball bearing 605 is in rolling connection with the inner side of the first annular groove. A second annular groove is symmetrically formed on the lower side of the annular frame 601 near its center and on the upper side of the tray base 1 below the annular frame 601. The lower ball bearing 606 is in rolling connection with the inner side of the second annular groove. The upper ball bearing 605 is located between the annular frame 601 and the tray body 4, and the lower ball bearing 606 is located between the annular frame 601 and the tray base 1. Together, they bear the weight load transmitted by the annular frame 601, the tool, and the tray body 4, preventing the rotating shaft 3 from bearing the entire load alone and causing deformation, extending the service life of the rotating shaft 3 and the bearing 2, and reducing maintenance costs. Furthermore, the rolling friction coefficient between the upper ball 605 and the lower ball 606 and the annular groove is much smaller than the sliding friction coefficient, which can significantly reduce the frictional resistance between the annular frame 601 and the pallet body 4 and the pallet base 1, making the rotation process of the pallet body 4 more stable and avoiding vibration of the engine workpiece due to uneven frictional resistance.

[0027] The annular frame 601 has a partition unit inside, which is connected to a partition plate 701 on the inner side of the annular frame 601. An annular plate 702 is fixedly connected to the outer circumferential surface of the inner side of the annular frame 601. A groove is formed on the upper part of the partition plate 701 away from the center of the annular frame 601. The outer side of the annular plate 702 is slidably connected to the inner side of the groove, and the outer side of the partition plate 701 is slidably connected to the inner side of the annular frame 601. This sliding fit structure allows the partition plate 701 to move flexibly along the 360° circumferential direction of the inner side of the annular frame 601. Workers can place the partition plate 701 at any position inside the annular frame 601 according to the number and size of tools, making full use of the annular space of the annular frame 601, avoiding the space waste caused by traditional partition structures, and increasing the tool storage capacity.

[0028] The partition 701 has a threaded rod 703 located on its upper interior. A threaded hole is formed in the partition 701 above the groove, and the outer side of the threaded rod 703 is threadedly connected to the inner side of the threaded hole. A rotating handle 704 is welded to the upper end of the threaded rod 703. The lower end of the threaded rod 703 abuts against the upper side of the annular plate 702. After the lower end of the threaded rod 703 abuts against the annular plate 702, the locking force is transmitted through the annular plate 702 to the annular frame 601, forming a stable integral structure between the partition 701 and the annular frame 601. This allows for re-fixing if the position of the partition 701 changes and it is located inside the annular frame 601.

[0029] Working principle: When assembling the engine on the pallet body 4 and adjusting the engine's mounting angle, the motor 602 mounted on the pallet base 1 is turned on. The output shaft of the motor 602 transmits power to the worm gear 603 fixedly connected to it, causing the worm gear 603 to rotate around its own axis, which in turn drives the upper pallet body 4 and the motor mounted on it to rotate until the motor's assembly position is in front of the operator. Then, the motor 602 is turned off, and the workpiece and assembly parts in the annular frame 601 are taken out to assemble the motor.

[0030] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0031] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0032] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An engine assembly tray, comprising a tray base (1): characterized in that: A bearing (2) is installed at the middle position of the upper side of the pallet base (1). A rotating shaft (3) is fixedly connected to the inner side of the bearing (2). A pallet body (4) is fixedly connected to the upper side of the rotating shaft (3). A lifting ring (5) is welded to the four corners of the upper side of the pallet base (1). A placement mechanism is provided above the pallet base (1). The placement mechanism includes an annular frame (601) connected between the pallet base (1) and the pallet body (4). A motor (602) is installed on the upper side of the pallet base (1) to the left of the rotating shaft (3). A worm gear (603) is fixedly connected to the right end of the output shaft of the motor (602). A worm wheel (604) is fixedly connected to the outer side of the rotating shaft (3). An upper ball bearing (605) is connected to the upper end of the annular frame (601). A lower ball bearing (606) is connected to the lower end of the annular frame (601). A partition unit is provided inside the annular frame (601).

2. The engine assembly tray according to claim 1, characterized in that: The partition unit is connected to the partition plate (701) inside the annular frame (601). An annular plate (702) is fixedly connected above the outer circumferential surface inside the annular frame (601). A threaded rod (703) is provided inside the partition plate (701). A rotating handle (704) is welded to the upper end of the threaded rod (703).

3. The engine assembly tray according to claim 1, characterized in that: The worm (603) meshes with the worm wheel (604).

4. The engine assembly tray according to claim 1, characterized in that: The upper side of the annular frame (601) near the center of the annular frame (601) and the lower side of the tray body (4) above the annular frame (601) are symmetrically provided with a first annular groove. The outer side of the upper ball (605) is tumblingly connected to the inner side of the first annular groove. The lower side of the annular frame (601) near the center of the annular frame (601) and the upper side of the tray base (1) below the annular frame (601) are symmetrically provided with a second annular groove. The lower ball (606) is tumblingly connected to the inner side of the second annular groove.

5. The engine assembly tray according to claim 2, characterized in that: A groove is provided above the end of the partition (701) away from the center of the annular frame (601). The outer side of the annular plate (702) is slidably connected to the inner side of the groove, and the outer side of the partition (701) is slidably connected to the inner side of the annular frame (601).

6. The engine assembly tray according to claim 2, characterized in that: The partition (701) has a threaded hole located above the groove, and the outer side of the threaded rod (703) is threadedly connected to the inner side of the threaded hole.

7. The engine assembly tray according to claim 2, characterized in that: The lower end of the threaded rod (703) abuts against the upper side of the annular plate (702).

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