A device for pressing bearings of an outboard engine housing

Abstract

The present invention discloses a device for pressing bearings for an outboard motor housing, which relates to the technical field of bearing installation equipment. The device comprises a base frame, wherein a pressing work surface is provided at the upper end of the base frame, a pressing base plate is mounted at the upper end of the pressing work surface, a housing pressing tray is detachably mounted on the pressing base plate, a support frame is mounted at the upper end of the pressing work surface behind the pressing base plate, a mounting frame is mounted at the front end of the support frame, a servo lifting electric cylinder is mounted on the mounting frame, a lifting plate is mounted at the output end of the servo lifting electric cylinder, a housing pressing quick-change head is detachably mounted at the lower end of the lifting plate, and a pressing program operation panel is mounted at one end of the mounting frame. The present invention electrically controls the servo lifting electric cylinder through the pressing program operation panel, and drives the housing pressing quick-change head to operate. The device can quickly and accurately press the bearing into the crankcase, and the housing pressing quick-change head can be quickly replaced according to the corresponding crankcase model, thereby greatly improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bearing installation, in particular to a press-fitting device for an outboard engine housing bearing. Background Art

[0002] As an important marine propulsion system, the outboard motor's performance and reliability directly impact the operational efficiency and safety of a vessel, playing a vital role in water transportation and the shipping industry. During the outboard motor manufacturing process, the engine is the heart of the outboard motor, and bearing installation is a critical step in engine assembly, directly impacting the engine's overall performance and service life.

[0003] At present, there are generally two pressing methods for crankcase crankshaft bearings: one is cold pressing, which generally uses liquid nitrogen to cool the crankshaft bearings for assembly. The disadvantage is that the cost is too high, which is a considerable expense for engine production factories with large annual output; the other is hot pressing, which is assembly at room temperature, such as the tapping method, which often causes damage to the crankshaft bearings and crankshaft, affecting the stability and durability of the engine. Different tooling must be replaced during pressing, which is inefficient and inconsistent. Traditional cold pressing and hot pressing cannot meet the production requirements of current factories, so it is necessary to develop an automated pressing method to meet the press fitting of engine crankshaft bearings, improve production efficiency, ensure production quality, improve the press fitting consistency of engine crankshaft bearings, and be able to press multiple parts at the same time, such as pressing crankshaft bearings and crankshaft oil seals at the same time, simplify operating procedures, and improve operational convenience; therefore, it is particularly important to develop an efficient, stable and reliable outboard engine case bearing pressing device. Summary of the Invention

[0004] The object of the present invention is to provide a press-fitting device for an outboard motor housing bearing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A device for pressing an outboard motor case bearing, comprising an equipment chassis, wherein a pressing work surface is provided at the upper end of the equipment chassis, a pressing base plate is installed on the upper end of the pressing work surface, a case pressing tray is detachably installed on the pressing base plate, a support frame is installed at the upper end of the pressing work surface at the rear of the pressing base plate, a mounting frame is installed at the front end of the support frame, a servo lifting electric cylinder is installed on the mounting frame, a lifting plate is installed at the output end of the servo lifting electric cylinder, a case pressing quick-change head is detachably installed at the lower end of the lifting plate, a pressing program operation panel is installed at one end of the mounting frame, and a pressing program power distribution cabinet is installed at the rear of the equipment chassis.

[0006] Preferably, the box press-fitted pallet includes a pallet bottom plate, a guide shaft, a rectangular spring, a pallet support plate, a linear bearing, a pallet limit shaft and a limit ring. The upper end of the press-fitted bottom plate is detachably mounted with the pallet bottom plate, and the upper end of the pallet bottom plate is mounted with four guide shafts in a rectangular array, and the pallet support plate is mounted above the four guide shafts. The upper end of the pallet support plate is mounted with four linear bearings in a rectangular array through mounting holes, and the upper ends of the guide shafts extend into the interior of the linear bearings. The guide shaft surfaces between the lower end of the pallet support plate and the pallet bottom plate are sleeved with rectangular springs, and a pallet limit shaft is mounted in the middle of the upper end of the pallet bottom plate, and the upper end of the pallet limit shaft passes through the pallet support plate through a through hole, and a limit ring is mounted on the surface of the pallet limit shaft above the pallet support plate.

[0007] Preferably, two positioning holes are arranged at the upper end of the tray bottom plate inside the four guide shafts, and bushings are installed inside the positioning holes. The bushings are installed on the upper end of the press-fit bottom plate by bolts, and the two bushings are arranged diagonally.

[0008] Preferably, two positioning pins are installed on the upper end of the tray support plate between the four linear bearings, and the two positioning pins are arranged diagonally.

[0009] Preferably, the box press-fit quick-change head includes a connecting rod, a quick-change male connector and an oil seal pressure head. The oil seal pressure head is installed at the lower end of the connecting rod, and the quick-change male connector is installed at the upper end of the connecting rod.

[0010] Preferably, a quick-change female connector is installed in the middle of the lower end of the lifting plate, and the quick-change female connector is connected to a quick-change male connector.

[0011] Preferably, the lifting plates on both sides of the servo lifting cylinder are installed with guide rods, and the upper ends of the mounting frames on both sides of the servo lifting cylinder are installed with sleeves through mounting holes. The upper ends of the guide rods all pass through the sleeves, and the inner diameter of the sleeves matches the diameter of the guide rods.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This outboard engine case bearing press-fit device electrically controls the servo lift cylinder through the press-fit program operation panel, which drives the case press-fit quick-change head to operate. This device can quickly and accurately press the bearing into the crankcase, and the case press-fit quick-change head can be quickly replaced according to the corresponding crankcase model, greatly improving production efficiency.

[0014] 2. This outboard engine case bearing press-fit device installs a rectangular spring and a linear bearing on the case press-fit tray. When the case press-fit quick-change head presses the crankcase, the rectangular spring protects the crankcase from excessive impact and provides power for the case press-fit support plate to return to its original position. The linear bearing reduces friction, improves press-fit accuracy, and effectively reduces impact force during the press-fit process, avoiding damage to the bearing and case due to impact and eccentricity.

[0015] 3. This outboard engine case bearing press-fitting device features a press-fitting program operation panel, allowing the operator to easily adjust parameters. Adjusted press-fitting parameters can be stored, and real-time press-fitting parameters can be compared with the adjustment parameters to detect unqualified press-fit products in real time. The start button is easy to operate, and the servo upgrade mechanism can automatically cycle. The modular design of the pallet and quick-change head allows for faster and more convenient tooling changes when press-fitting bearings of different engine models.

[0016] 4. Regarding the outboard engine case bearing press-fitting device, the crankcase and the tray bottom plate are concentrically positioned using locating pins and bushings, which can ensure the concentric accuracy of the case and the crankshaft bearing; this device is equipped with a high-precision pressure monitoring and control system to ensure that the pressure during the press-fitting process is within the preset range, ensuring that the private service lifting mechanism can accurately press the crankshaft bearing according to the set press-fitting depth, ensuring the accuracy of the crankshaft bearing's press-fitting depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is an exploded view of the box press-fit quick-change head of the present invention;

[0019] Figure 3 This is an overall schematic diagram of a box press-fitted pallet according to the present invention;

[0020] Figure 4 This is an exploded view of the box press-fitted pallet of the present invention.

[0021] In the figure: 1. Equipment chassis; 2. Press-fit work surface; 3. Press-fit base plate; 5. Support frame; 6. Mounting frame; 7. Servo lifting cylinder; 8. Lifting plate; 10. Press-fit program operation panel; 11. Press-fit program distribution cabinet; 12. Positioning hole; 13. Bushing; 14. Positioning pin; 15. Quick-change female connector; 16. Guide rod; 17. Sleeve; 401. Pallet base plate; 402. Guide shaft; 403. Rectangular spring; 404. Pallet support plate; 405. Linear bearing; 406. Pallet limit shaft; 407. Limiting ring; 901. Connecting rod; 902. Quick-change male connector; 903. Oil seal pressure head. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, 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 and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figures 1 to 4 As shown, this embodiment is about the outboard engine case bearing press-fitting device, including an equipment chassis 1, the equipment chassis 1 is used to fix the equipment and provide good support for the equipment, the upper end of the equipment chassis 1 is provided with a press-fitting work surface 2, the press-fitting work surface 2 is used to install various devices or equipment, the upper end of the press-fitting work surface 2 is installed with a press-fitting base plate 3, the press-fitting base plate 3 is used to install various types of case press-fitting pallets, and provides a carrier for the installation of the case press-fitting pallet, the press-fitting base plate 3 is detachably installed with a case press-fitting pallet, the case press-fitting pallet is used to place the crankcase, the upper end of the press-fitting work surface 2 at the rear of the press-fitting base plate 3 is installed with a support frame 5, the front end of the support frame 5 is installed with a mounting frame 6, the mounting frame 6 is installed with a servo lifting electric cylinder 7, the servo lifting electric cylinder 7 provides an up and down lifting stroke, and provides a pressing force for the case bearing press-fitting, the servo lifting electric cylinder 7 A lifting plate 8 is installed at the output end, and a box pressing quick-changing head is detachably installed at the lower end of the lifting plate 8. When the servo lifting cylinder 7 is extended and shortened, the box pressing quick-changing head on the lifting plate 8 is driven to move up and down, which can realize the pressing of the oil seal and the bearing, and the box pressing quick-changing head can be disassembled and replaced, which is convenient for replacing the corresponding box pressing quick-changing head according to the corresponding crankcase. A pressing program operation panel 10 is installed at one end of the mounting frame 6. The pressing program operation panel 10 provides a user program pressing design page, which is convenient for the operator to input pressing parameters, monitor the pressing process, display the pressing pressure and pressing depth, and automatically check whether the pressing is qualified. It can be connected to the factory MES system to remotely monitor and query pressing data, collect and store pressing data, and a pressing program distribution cabinet 11 is installed at the rear of the equipment chassis 1. The pressing program distribution cabinet 11 is used to install and protect various electrical components.

[0025] Specifically, the box press-fitted pallet includes a pallet bottom plate 401, a guide shaft 402, a rectangular spring 403, a pallet support plate 404, a linear bearing 405, a pallet limiting shaft 406 and a limiting ring 407. The upper end of the press-fitted bottom plate 3 is detachably mounted with the pallet bottom plate 401, and the upper end of the pallet bottom plate 401 is mounted with four guide shafts 402 in a rectangular array. The four guide shafts 402 are mounted above the pallet support plate 404. The upper end of the pallet support plate 404 is mounted with four linear bearings 405 in a rectangular array through mounting holes. The upper ends of the guide shafts 402 extend into the interior of the linear bearings 405. The surfaces of the guide shafts 402 between the lower end of the pallet support plate 404 and the pallet bottom plate 401 are sleeved with a rectangular spring 403. A pallet limiting shaft 406 is mounted in the middle of the upper end of the pallet bottom plate 401. The upper end of the pallet limiting shaft 406 passes through the pallet support plate 404 through a through hole. 04, a limiting ring 407 is installed on the surface of the pallet limiting shaft 406 above, and the pallet bottom plate 401 provides a stable support base to ensure that the pallet bottom plate 401 and the box press-fit quick-change head remain concentric. By placing the bearing on the surface of the pallet limiting shaft 406, and then placing the crankcase on the pallet support plate 404, the box press-fit quick-change head presses the crankcase when it descends, and under the action of the box press-fit quick-change head and the limiting ring 407 on the surface of the pallet limiting shaft 406, the bearing is pressed into the crankcase to achieve the installation of the crankshaft bearing. During this process, the pallet support plate 404 descends along the surface of the guide shaft 402. Under the action of the linear bearing 405, the pallet support plate 404 reduces the wear on the guide shaft 402, and the pallet support plate 404 compresses the rectangular spring 403. The rectangular spring 403 protects the box from excessive impact and provides power for the pallet support plate 404 to return.

[0026] Furthermore, two positioning holes 12 are provided on the upper end of the tray base plate 401 inside the four guide shafts 402, and bushings 13 are installed inside the positioning holes 12. The bushings 13 are installed on the upper end of the press-fit base plate 3 by bolts. The two bushings 13 are arranged diagonally to ensure the stable connection between the tray base plate 401 and the press-fit base plate 3, and to ensure the concentricity of the tray base plate 401 and the box press-fit quick-change head, so as to ensure the effective pressing of the box press-fit quick-change head.

[0027] Furthermore, two positioning pins 14 are installed on the upper end of the tray support plate 404 between the four linear bearings 405. The two positioning pins 14 are arranged diagonally. The positioning pins 14 are used to position the crankcase, effectively avoiding accidental movement of the crankcase when placed on the tray support plate 404, and avoiding impact and eccentricity during installation.

[0028] Furthermore, the box press-fit quick-change head includes a connecting rod 901, a quick-change male connector 902 and an oil seal pressure head 903. The oil seal pressure head 903 is installed at the lower end of the connecting rod 901, and the quick-change male connector 902 is installed at the upper end of the connecting rod 901. The quick-change male connector 902 is used to connect with the lifting plate 8, which can realize the rapid connection between the box press-fit quick-change head as a whole and the lifting plate 8, making it easy to replace. The oil seal pressure head 903 is used to press the oil seal.

[0029] Furthermore, a quick-change female connector 15 is installed in the middle of the lower end of the lifting plate 8, and the quick-change female connector 15 is connected to the quick-change male connector 902. The quick-change female connector 15 can be quickly connected to the quick-change male connector 902 to achieve rapid replacement of the quick-change head pressed into the box body. The connection principle between the quick-change female connector 15 and the quick-change male connector 902 is an existing technical means, so it will not be described in detail.

[0030] Furthermore, the lifting plates 8 on both sides of the servo lifting cylinder 7 are installed with guide rods 16, and the upper ends of the mounting frames 6 on both sides of the servo lifting cylinder 7 are installed with sleeves 17 through the mounting holes. The upper ends of the guide rods 16 all pass through the sleeves 17, and the inner diameter of the sleeves 17 matches the diameter of the guide rods 16. When the servo lifting cylinder 7 drives the lifting plate 8 to lift, the lifting plate 8 drives the guide rods 16 to move inside the sleeves 17, which can realize the guidance of the movement of the lifting plate 8 and facilitate the vertical up and down movement of the lifting plate 8.

[0031] The method of using this embodiment is as follows: first, according to the model of the crankcase to be pressed, replace the corresponding case press-fitting tray and the case press-fitting quick-change head, connect the quick-change male connector 902 in the case press-fitting quick-change head and the quick-change female connector 15 on the lifting plate 8, and then connect the bushing 13 inside the positioning hole 12 of the tray bottom plate 401 and the press-fitting bottom plate 3 to realize the positioning of the case press-fitting tray as a whole and the case press-fitting quick-change head, and then debug the corresponding program on the press-fitting program operation panel 10, place the crankshaft bearing on the surface of the tray limit shaft 406, and make the crankshaft bearing The oil seal contacts the limit ring 407, and then places the oil seal on the oil seal pressure head 903 in the box press-fit quick-change head. The crankcase is placed on the tray support plate 404, and the positioning pin 14 is used to limit the crankcase to prevent the crankcase from accidentally moving. Then, the start button is pressed, and the servo lifting cylinder 7 drives the oil seal pressure head 903 to move downward. The oil seal pressure head 903 presses the oil seal into the inside of the crankcase. At the same time, the servo lifting cylinder 7 presses the box toward the crankshaft bearing, and the limit ring 407 and the oil seal are placed on the surface of the tray limit shaft 406 in the box press-fit tray. The crankshaft bearing is pressed into the box body by the pressure head 903. During this process, the tray support plate 404 reduces the wear on the guide shaft 402 under the action of the linear bearing 405. The tray support plate 404 compresses the rectangular spring 403. The rectangular spring 403 protects the box body from excessive impact and provides power for the tray support plate 404 to return. After the press-fitting is completed, the servo lifting cylinder 7 will automatically return to its original position. The rectangular spring 403 recovers and drives the tray support plate 404 to return to its original position. At the same time, the MES system will record the press-fitting data and provide energy. A device that can stably, continuously and reliably press the bearing into the installation position of the outboard engine case, avoid impact and eccentricity during installation, and ensure the installation quality of the bearing. The device for pressing the crankshaft bearing and crankshaft oil seal can change the traditional pressing method. The hydraulic power unit is precisely controlled by an electrical control system to ensure the stability and uniformity of the pressing force, which will better control the consistency of the product; the data storage and control system are also connected to the pressing process for automatic verification and automatic storage, realizing a more intelligent and automated pressing process, and further improving the installation accuracy and efficiency.

[0032] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalent features for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for pressing an outboard engine housing bearing, comprising a device chassis (1), characterized in that: The upper end of the equipment chassis (1) is provided with a press-fitting work surface (2), the upper end of the press-fitting work surface (2) is installed with a press-fitting bottom plate (3), a box press-fitting tray is detachably installed on the press-fitting bottom plate (3), a support frame (5) is installed on the upper end of the press-fitting work surface (2) at the rear of the press-fitting bottom plate (3), a mounting frame (6) is installed at the front end of the support frame (5), a servo lifting electric cylinder (7) is installed on the mounting frame (6), a lifting plate (8) is installed at the output end of the servo lifting electric cylinder (7), a box press-fitting quick-change head is detachably installed at the lower end of the lifting plate (8), a press-fitting program operation panel (10) is installed at one end of the mounting frame (6), and a press-fitting program power distribution cabinet (11) is installed at the rear of the equipment chassis (1); The box body press-fitting pallet comprises a pallet bottom plate (401), a guide shaft (402), a rectangular spring (403), a pallet support plate (404), a linear bearing (405), a pallet limiting shaft (406) and a limiting ring (407). The pallet bottom plate (401) is detachably mounted on the upper end of the press-fitting bottom plate (3). Four guide shafts (402) are mounted on the upper end of the pallet bottom plate (401) in a rectangular array. A pallet support plate (404) is mounted above the four guide shafts (402). The upper end of the pallet support plate (404) is mounted in a rectangular array through mounting holes. Four linear bearings (405) are installed, the upper ends of the guide shafts (402) all extend into the interior of the linear bearings (405), the surfaces of the guide shafts (402) between the lower end of the tray support plate (404) and the tray bottom plate (401) are all sleeve-mounted with rectangular springs (403), a tray limiting shaft (406) is installed in the middle of the upper end of the tray bottom plate (401), the upper end of the tray limiting shaft (406) passes through the tray support plate (404) through a through hole, and a limiting ring (407) is installed on the surface of the tray limiting shaft (406) above the tray support plate (404); Two positioning holes (12) are arranged on the upper end of the tray bottom plate (401) inside the four guide shafts (402), and bushings (13) are installed inside the positioning holes (12). The bushings (13) are installed on the upper end of the press-fit bottom plate (3) by bolts, and the two bushings (13) are arranged diagonally.

2. The outboard engine housing bearing press-fitting device according to claim 1, characterized in that: Two positioning pins (14) are installed on the upper end of the tray support plate (404) between the four linear bearings (405), and the two positioning pins (14) are arranged diagonally.

3. The outboard engine housing bearing press-fitting device according to claim 1, characterized in that: The box-mounted quick-change head comprises a connecting rod (901), a quick-change male connector (902), and an oil seal pressure head (903). The oil seal pressure head (903) is installed at the lower end of the connecting rod (901), and the quick-change male connector (902) is installed at the upper end of the connecting rod (901).

4. The outboard engine housing bearing press-fitting device according to claim 3, characterized in that: A quick-change female connector (15) is installed in the middle of the lower end of the lifting plate (8), and the quick-change female connector (15) is connected to the quick-change male connector (902).

5. The outboard engine housing bearing press-fitting device according to claim 1, characterized in that: The lifting plates (8) on both sides of the servo lifting cylinder (7) are installed with guide rods (16), and the upper ends of the mounting frames (6) on both sides of the servo lifting cylinder (7) are installed with sleeves (17) through mounting holes. The upper ends of the guide rods (16) all pass through the sleeves (17), and the inner diameter of the sleeves (17) matches the diameter of the guide rods (16).

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