Press fitting device for bearing of outboard engine box

Abstract

The invention discloses an outboard engine box bearing press-fitting device, and relates to the technical field of bearing mounting equipment, the outboard engine box bearing press-fitting device comprises an equipment underframe, a press-fitting working table is arranged at the upper end of the equipment underframe, a press-fitting bottom plate is mounted at the upper end of the press-fitting working table, and a box press-fitting tray is detachably mounted on the press-fitting bottom plate; a supporting frame is installed at the upper end of the press-fitting working table at the rear portion of the press-fitting bottom plate, an installation frame is installed at the front end of the supporting frame, a servo lifting electric cylinder is installed on the installation frame, a lifting plate is installed at the output end of the servo lifting electric cylinder, a box press-fitting quick-change head is detachably installed at the lower end of the lifting plate, and a press-fitting program operation panel is installed at one end of the installation frame. According to the device, the servo lifting electric cylinder is electrically controlled through the press-fitting program operation panel, the box body press-fitting quick-change head is driven to act, the device can quickly and accurately press a bearing into a crankshaft box body, the box body press-fitting quick-change head can be quickly replaced according to the crankshaft box body of the corresponding model, and the production efficiency is greatly improved.

Description

Technical Field

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

[0002] As an important water power equipment, the performance and reliability of outboard motors directly affect the operating efficiency and safety of ships; they play a vital role in water transportation and the shipbuilding industry. In the manufacturing process of outboard motors, the engine is the heart of the outboard motor, and the installation of bearings is a key link in engine assembly, which is directly related to the overall performance and service life of the engine.

[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-fit 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-fit device for an outboard engine housing bearing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A device for pressing an outboard motor case bearing, comprising an equipment frame, a pressing work surface is arranged at the upper end of the equipment frame, 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 on 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 distribution cabinet is installed at the rear of the equipment frame.

[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, the upper end of the pallet bottom plate is mounted with four guide shafts in a rectangular array, a pallet support plate is commonly mounted above the four guide shafts, four linear bearings are mounted in a rectangular array through mounting holes on the upper end of the pallet support plate, the upper ends of the guide shafts all extend into the interior of the linear bearings, the surfaces of the guide shafts between the lower end of the pallet support plate and the pallet bottom plate are all sleeve-mounted with rectangular springs, a pallet limit shaft is mounted in the middle of the upper end of the pallet bottom plate, 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, 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 body 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, and the upper ends of the guide rods are penetrated by 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-fitting device electrically controls the servo lifting electric cylinder through the press-fitting program operation panel, and drives the case press-fitting quick-change head to move. The device can quickly and accurately press the bearing into the crankcase, and the case press-fitting quick-change head can be quickly replaced according to the corresponding model of the crankcase, which greatly improves the production efficiency.

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

[0015] 3. This outboard engine case bearing press-fitting device has a press-fitting program operation panel, which is convenient for the debugger to debug parameters. The debugged press-fitting parameters can be stored, and the real-time press-fitting parameters can be compared with the debugged parameters to detect unqualified press-fitted products in real time. The start button is easy to operate, and the servo upgrade mechanism can automatically cycle. The tray and quick-change head are modularly designed, which makes it faster and more convenient to replace tooling when press-fitting bearings of different 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, to ensure that the private service lifting mechanism can accurately press the crankshaft bearing according to the set press-fitting depth, and to ensure 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 It is an overall schematic diagram of a box press-fitted pallet of the present invention;

[0020] Figure 4 It 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 bottom 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 bottom plate; 402. Guide shaft; 403. Rectangular spring; 404. Pallet support plate; 405. Linear bearing; 406. Pallet limit shaft; 407. Limit ring; 901. Connecting rod; 902. Quick-change male connector; 903. Oil seal pressure head. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood 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, a press-fitting work surface 2 is arranged on the upper end of the equipment chassis 1, the press-fitting work surface 2 is used to install various devices or equipment, a press-fitting bottom plate 3 is installed on the upper end of the press-fitting work surface 2, the press-fitting bottom 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, a case press-fitting pallet is detachably installed on the press-fitting bottom plate 3, and the case press-fitting pallet is used to place the crankshaft case, 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, 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 press-fitting quick-change 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 press-fitting quick-change 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 press-fitting quick-change head can be disassembled and replaced, which is convenient for replacing the corresponding box press-fitting quick-change head according to the corresponding crankshaft box. 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 for remote monitoring and query of pressing data, and collect and store pressing data. 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 pallet bottom plate 401 is detachably installed on the upper end of the press-fitted bottom plate 3. Four guide shafts 402 are installed in a rectangular array on the upper end of the pallet bottom plate 401. A pallet support plate 404 is installed above the four guide shafts 402. Four linear bearings 405 are installed in a rectangular array on the upper end of the pallet support plate 404 through mounting holes. The upper ends of the guide shafts 402 all extend into the interior of the linear bearings 405. Rectangular springs 403 are sleeved on the surfaces of the guide shafts 402 between the lower end of the pallet support plate 404 and the pallet bottom plate 401. A pallet limiting shaft 406 is installed in the middle of the upper end of the pallet bottom plate 401. The upper end of the pallet limiting shaft 406 penetrates the pallet support plate 404 through a through hole. A limiting ring 407 is installed on the surface of the pallet limiting shaft 406 above 04, and the pallet bottom plate 401 provides a stable supporting foundation to ensure that the pallet bottom plate 401 and the box press-fit quick-change head remain concentric. The bearing is placed on the surface of the pallet limiting shaft 406, and the crankcase is placed on the pallet supporting plate 404. The box press-fit quick-change head presses the crankcase when it descends. 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 supporting plate 404 descends along the surface of the guide shaft 402. Under the action of the linear bearing 405, the pallet supporting plate 404 reduces the wear on the guide shaft 402. The pallet supporting plate 404 compresses the rectangular spring 403. The rectangular spring 403 protects the box from excessive impact force and provides power for the pallet supporting plate 404 to return.

[0026] Furthermore, 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. The two bushings 13 are arranged diagonally to ensure the stable connection between the tray bottom plate 401 and the press-fit bottom plate 3, and to ensure the concentricity of the tray bottom 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, so that the box press-fit quick-change head as a whole can be quickly connected to the lifting plate 8, which is convenient for replacement. 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 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 guide 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, the corresponding case press-fitting tray and case press-fitting quick-change head are replaced, and the quick-change male connector 902 in the case press-fitting quick-change head is connected with the quick-change female connector 15 on the lifting plate 8, and then the bushing 13 inside the positioning hole 12 of the tray bottom plate 401 is connected to 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 the press-fitting program operation panel 10 debugs the corresponding program, places the crankshaft bearing on the surface of the tray limit shaft 406, and makes the crankshaft bearing The oil seal is then placed on the oil seal pressing head 903 in the case press-fit quick-change head, the crankcase is placed on the tray support plate 404, and the locating pin 14 is used to limit the crankcase to prevent accidental movement of the crankcase. The start button is then pressed, and the servo lifting cylinder 7 drives the oil seal pressing head 903 to move downward. The oil seal pressing head 903 presses the oil seal into the crankcase, and at the same time, the servo lifting cylinder 7 presses the case to move toward the crankshaft bearing, and the limiting ring 407 and the oil seal on the surface of the tray limiting shaft 406 in the case press-fit tray are pressed. 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 to its original position. After the press-fitting is completed, the servo lifting cylinder 7 will automatically return to its original position, and the rectangular spring 403 will restore to drive 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, ensure the installation quality of the bearing, and press the crankshaft bearing and crankshaft oil seal. It can change the traditional press-fitting method, use the electrical control system to accurately control the hydraulic power device, ensure the stability and uniformity of the press-fitting force, and better control the consistency of the product; it also connects the data storage and control system to the press-fitting process for automatic verification and automatic storage, to achieve a more intelligent and automated press-fitting process, and further improve the installation accuracy and efficiency.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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 can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for pressing an outboard engine housing bearing, comprising a device chassis (1), characterized in that: A press-fitting work surface (2) is arranged at the upper end of the equipment chassis (1), a press-fitting bottom plate (3) is installed at the upper end of the press-fitting work surface (2), a box press-fitting tray is detachably installed on the press-fitting bottom plate (3), a support frame (5) is installed at 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).

2. The outboard engine housing bearing press-fitting device according to claim 1, characterized in that: The box body press-fitted 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-fitted 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 formed in a rectangular array through mounting holes. Four linear bearings (405) are installed, and the upper ends of the guide shafts (402) all extend into the interior of the linear bearings (405). A rectangular spring (403) is installed in a sleeve-type manner on the surface of the guide shaft (402) between the lower end of the tray support plate (404) and the tray bottom plate (401). 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).

3. The outboard engine housing bearing press-fitting device according to claim 2, characterized in that: Two positioning holes (12) are arranged at 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.

4. The outboard engine housing bearing press-fitting device according to claim 2, 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.

5. 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 pressing head (903); the oil seal pressing 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).

6. The outboard engine housing bearing press-fitting device according to claim 5, 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).

7. 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 electric cylinder (7) are installed with guide rods (16), and the upper ends of the mounting frames (6) on both sides of the servo lifting electric cylinder (7) are installed with sleeves (17) through mounting holes, and the upper ends of the guide rods (16) all pass through the sleeves (17), and the inner diameter size of the sleeves (17) matches the diameter size of the guide rods (16).

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