Cylinder sleeve press fitting device

Abstract

The utility model belongs to the technical field of cylinder sleeve press-fitting, and particularly relates to an automatic cylinder sleeve press-fitting device capable of press-fitting different gearboxes, which comprises a machine table and a press-fitting mechanism arranged on the machine table, and the press-fitting mechanism comprises an air cylinder for providing driving force and a press-fitting plate for pressing a cylinder sleeve into a shaft hole of a gearbox. A telescopic piston rod is arranged in the air cylinder, a press-fitting head used for containing a cylinder sleeve is arranged on the press-fitting plate, the machine table is of a hollow cuboid structure, a through hole is formed in the surface of the machine table, a groove is formed in the face, making contact with the machine table, of the press-fitting plate, and the piston rod is matched with the through hole, penetrates through the through hole and then is connected with the groove of the press-fitting plate in a clamped mode. And the piston rod is clamped with the groove and then drives the press-fitting plate to move towards the gearbox shaft hole. According to the device, automatic press fitting of the gearbox cylinder sleeve can be achieved, and press fitting of the cylinder sleeves of different gearboxes can be achieved by replacing the press fitting plate. The device is simple in structure, reasonable in design and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinder liner press-fitting, and particularly relates to an automatic cylinder liner press-fitting device capable of press-fitting different gearboxes. Background Art

[0002] The gearbox is an important component of many vehicles. Before installing the gearbox on the vehicle, it is often necessary to press the cylinder liner into the shaft hole of the gearbox. In addition, it is also necessary to install the bearing into the bearing hole at the bottom of the gearbox. However, the traditional method of installing the cylinder liner requires manual operation. Workers align the cylinder liner with the shaft hole on the gearbox and then tap the cylinder liner to make it enter the shaft hole. However, there is more than one shaft hole on the gearbox. The manual assembly method is not only time-consuming and laborious, but also the assembly effect cannot be guaranteed.

[0003] In view of the above urgent technical problems to be solved, there is currently a device in the prior art that can automatically press the cylinder liner into the shaft hole of the gearbox. This device includes a frame, a push rod, and a push plate. The frame is used to place the gearbox to be press-fitted. The push rods are arranged on both sides of the frame corresponding to the positions of the shaft holes on the gearbox. One end of the push rod is sleeved with the cylinder liner. In this way, the two push plates can drive the push rods on the left and right sides of the frame to move towards or away from each other simultaneously, so as to realize the automatic press-fitting of the cylinder liner.

[0004] However, when the inventor of the present application implemented the above device, it was found that it had the following deficiencies: Since the components for press-fitting the cylinder liner of this device cannot be replaced, and the positions of the shaft holes of different gearboxes are different, this device can only press-fit one fixed gearbox and cannot press-fit different gearboxes. Therefore, its application range is small and its function has obvious limitations. Summary of the Utility Model

[0005] A cylinder liner press-fitting device disclosed by the utility model mainly solves the technical problem that the existing press-fitting device cannot press-fit different gearboxes.

[0006] To achieve the above object, the utility model provides a cylinder liner press-fitting device, which is used to press the cylinder liner into the shaft hole of the gearbox. It includes a machine table and a press-fitting mechanism arranged on the machine table. The press-fitting mechanism includes a cylinder providing driving force and a press-fitting plate for pressing the cylinder liner into the shaft hole of the gearbox. A telescopic piston rod is arranged in the cylinder. A press-fitting head for placing the cylinder liner is arranged on the press-fitting plate. The machine table is of a hollow cuboid structure and through holes are provided on its surface. A groove is arranged on the surface of the press-fitting plate in contact with the machine table. The piston rod is adapted to the through hole and after passing through the through hole, it is clamped with the groove of the press-fitting plate. After the piston rod is clamped with the groove, it drives the press-fitting plate to move towards the shaft hole of the gearbox.

[0007] Beneficial effects: The machine in this solution is a hollow cuboid structure. The sleeved gearbox can be placed in the middle of the machine. The pressing mechanism is mainly composed of a cylinder and a pressing plate, which are assembled and spliced on the machine. A piston rod is arranged on the cylinder and can move back and forth on the through hole. On the side of the pressing plate that fits the machine, there is a groove. The piston rod passes through the through hole and is clamped with the groove. In this way, the pressing plate can move towards the shaft hole of the gearbox along with the piston rod, and a pressing head adapted to the shaft hole of the gearbox is fixedly arranged on the corresponding surface. After the position of the gearbox placed on the machine is adjusted, the pressing mechanism can automatically press the cylinder sleeve into the shaft hole of the gearbox without manual installation. If it is necessary to replace the gearbox to be pressed, the pressing plate can be disassembled from the piston rod, and a pressing plate adapted to the shaft hole of the gearbox can be replaced and then pressed again.

[0008] Preferably, a plurality of pressing heads and grooves are respectively arranged on the pressing plate.

[0009] Beneficial effects: In this solution, a plurality of pressing heads are arranged on the pressing plate of the pile pressing, and the pressing heads are fixedly connected to the pressing plate. The plurality of pressing heads can respectively correspond to a plurality of shaft holes on the same side of the gearbox, so as to improve the pressing efficiency. The plurality of grooves are for clamping other guide rods.

[0010] Preferably, limiting holes are symmetrically arranged on both sides of the through hole on the surface of the machine. The pressing mechanism further includes a guide rod, and the guide rod passes through the limiting hole and is clamped with the groove on the pressing plate.

[0011] Beneficial effects: In this solution, when the guide rod can also be clamped with the pressing plate, the main function of the guide rod is to drive the pressing plate to move in the direction of the limiting hole, so as to prevent the pressing plate from deflecting.

[0012] Preferably, pressing mechanisms are arranged on the upper side, left side, and right side of the machine.

[0013] Beneficial effects: In this solution, pressing mechanisms are arranged on the upper side, left side, and right side. In this way, when the gearbox is pressed, the cylinder sleeves can be pressed into the shaft holes in all directions of the gearbox at the same time, improving the pressing efficiency of the cylinder sleeves.

[0014] Preferably, pins are arranged on the top surface and the bottom surface of the pressing plate. Card holes are arranged on the piston rod and the guide rod. After the piston rod and the guide rod are clamped with the groove, the pin passes through the card hole.

[0015] Beneficial effects: In this solution, the pressing plate is detachably connected to the piston rod and the guide rod through pins. In this way, if it is necessary to replace the gearbox to be pressed, the pin can be removed, the pressing plate can be replaced, and a pressing head adapted to the current gearbox can be reinstalled, so as to realize the cylinder sleeve pressing for different gearboxes.

[0016] Preferably, a plurality of limiting protrusions for fixing the gearbox are provided on the inner surface of the lower side of the machine table.

[0017] Beneficial effects: In this solution, a plurality of limiting protrusions for fixing the gearbox are provided on the inner surface of the lower side of the machine table, so that the gearbox can be better fixed on the machine table. When installing the cylinder liner, the gearbox is not likely to move, and the accuracy of installing the cylinder liner is higher. Moreover, the positions of the plurality of limiting protrusions are different. For different pressing boxes, the corresponding limiting protrusions can be selected for fixing.

[0018] Preferably, a bearing rod is further provided inside the lower side of the machine table, and the bearing rod is used to install the bearing on the gearbox.

[0019] Beneficial effects: In this solution, a bearing rod is provided on the lower side of the machine table to install the bearing on the gearbox. During pressing, the bearing can be installed on the bearing rod, and the bearing rod will automatically install the bearing on the gearbox. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of the cylinder liner pressing device of the present invention;

[0022] Figure 2 It is another schematic structural diagram of the cylinder liner pressing device of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the pressing mechanism of the cylinder liner pressing device of the present invention;

[0024] Figure 4 It is a front view of the pressing mechanism of the cylinder liner pressing device of the present invention;

[0025] Figure 5 It is Figure 3 The exploded view of the 3 in

[0026] Main reference numerals: 1. Machine table; 11. Through hole; 12. Limiting hole; 13. Limiting protrusion; 14. Bearing rod; 2. Pressing mechanism; 21. Cylinder; 22. Pressing plate; 23. Piston rod; 24. Guide rod; 25. Pressing head; 26. Plug pin; 27. Card hole. Detailed Embodiments

[0027] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation to the present utility model.

[0028] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0030] As an embodiment of the present utility model:

[0031] A cylinder liner pressing device in this embodiment mainly includes two parts, a machine table 1 and a pressing mechanism 2.

[0032] Refer to Figures 1 to 5 , the machine table 1 is a hollow cuboid structure. The hollow part in the middle of the machine table 1 can place the gearbox to be pressed. A plurality of limiting protrusions 13 can be arranged on the inner bottom surface of the machine table 1 for fixing the gearbox on the machine table 1 to prevent the gearbox from moving during the process of pressing the cylinder liner. Some through holes 11 are also arranged on the left side, right side, and upper side of the machine table 1. Two limiting holes 12 are symmetrically arranged on both sides of the through holes 11. Refer to Figure 5 , the size of the through holes 11 is the same as that of the limiting holes 12, and the diameter of the piston rod 23 is the same as that of the guide rod 24. The through holes 11 are adapted to the size of the piston rod 23. Therefore, the piston rod 23 can move within the through holes 11, and the guide rod 24 can move within the limiting holes 12. In addition, a bearing rod 14 is arranged inside the lower side of the machine table 1, which can be telescoped within the machine table 1 and can be completely retracted within the machine table 1 when not in use. The function of the bearing rod 14 is to install bearings for the gearbox.

[0033] The press-fitting mechanism 2 is mainly composed of a cylinder 21 and a press-fitting plate 22. The cylinder 21 mainly provides the driving force for the press-fitting mechanism 2 during press-fitting. It is arranged on the outer surface of the machine table 1. A piston rod 23 is arranged inside the cylinder 21. One end of it extends into the interior of the cylinder 21, and the other end extends into the inner side of the machine table 1 through a through hole 11 and can move back and forth in the cylinder 21. On the surface of the press-fitting plate 22 that contacts the machine table 1, there are a plurality of grooves. The size of the grooves is adapted to the piston rod 23, and the piston rod 23 can be clamped in the grooves. Since the gap between the two clamps is very small, the piston rod 23 will not easily fall off from the grooves. The press-fitting mechanism 2 also has a guide rod 24. The principle of the fixed connection between the guide rod 24 and the groove is the same as that between the piston rod 23 and the groove. After it is clamped with the groove on the press-fitting plate 22 through a limit hole 12, it can provide the function of guiding the movement of the press-fitting plate 22. On the press-fitting plate 22, there are also several press-fitting heads 25 for placing cylinder sleeves. The press-fitting heads 25 can conveniently press the cylinder sleeves into the shaft holes of the gearbox. In addition, the press-fitting mechanisms 2 are arranged on the left side, right side, and upper side of the machine table 1.

[0034] As a preferred embodiment, referring to Figure 5 , on both the top surface and the bottom surface of the press-fitting plate 22, there are pins 26 and jacks for the pins 26. At the end of the piston rod 23 and the guide rod 24 that are clamped with the groove, there are also locking holes 27. After the piston rod 23 and the guide rod 24 are clamped into the groove, the locking holes 27 are aligned with the jacks, and then the pins 26 can pass through the locking holes 27 to fix the piston rod 23 and the guide rod 24 on the press-fitting plate 22, preventing the press-fitting plate 22 from falling off.

[0035] When the cylinder sleeve needs to be press-fitted into the gearbox, first place the gearbox on the machine table 1 and fix the gearbox to be press-fitted with the limit protrusion 13. Place the cylinder sleeve on the press-fitting heads 25 on the press-fitting plate 22. At this time, the position of the cylinder sleeve corresponds to the position of the shaft hole of the gearbox to be press-fitted one by one. Subsequently, start the device, and the cylinder 21 starts to work, providing a driving force to make the piston rod 23 move back and forth through the through hole 11. The piston rod 23 drives the press-fitting plate to move towards the shaft hole of the gearbox to complete the installation of the cylinder sleeve without manual installation. In addition, if the cylinder sleeve needs to be press-fitted into other gearboxes, the pins 26 on the press-fitting plate 22 can be removed first, and then the press-fitting plate 22 can be disassembled from the piston rod 23. Subsequently, replace the press-fitting plate 22 with different press-fitting heads 25 and then perform the cylinder sleeve press-fitting, so that the press-fitting of cylinder sleeves for different gearboxes can be realized.

[0036] In summary, a cylinder sleeve press-fitting device disclosed in the present application can not only realize the automatic press-fitting of cylinder sleeves for gearboxes, but also press-fit cylinder sleeves for different gearboxes. This instrument has a simple structure, reasonable design, and convenient use.

[0037] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cylinder liner press-fitting device, used for pressing a cylinder liner into a shaft hole of a gearbox, comprising a machine platform (1) and a press-fitting mechanism (2) arranged on the machine platform (1), characterized in that: The press-fitting mechanism (2) comprises a cylinder (21) for providing driving force and a press-fitting plate (22) for pressing the cylinder sleeve into the gearbox shaft hole. A retractable piston rod (23) is arranged in the cylinder (21). A press-fitting head (25) for placing the cylinder sleeve is arranged on the press-fitting plate (22). The machine platform (1) is a hollow rectangular parallelepiped structure and a through hole (11) is arranged on its surface. A groove is arranged on a side of the press-fitting plate (22) that contacts the machine platform (1). The piston rod (23) is adapted to the through hole (11) and is engaged with the groove of the press-fitting plate (22) after passing through the through hole (11). After the piston rod (23) is engaged with the groove, it drives the press-fitting plate (22) to move toward the gearbox shaft hole.

2. The cylinder liner press-fitting device according to claim 1, characterized in that: A plurality of pressing heads (25) and grooves are respectively provided on the pressing plate (22).

3. The cylinder liner press-fitting device according to claim 2, characterized in that: Limiting holes (12) are symmetrically arranged on both sides of the through hole (11) on the surface of the machine platform (1), and the pressing mechanism (2) also includes a guide rod (24), and the guide rod (24) passes through the limiting hole (12) and is clamped with a groove on the pressing plate (22).

4. The cylinder liner press-fitting device according to claim 1 or 2, characterized in that: Pressing mechanisms (2) are provided on the upper side, left side and right side of the machine platform (1).

5. The cylinder liner press-fitting device according to claim 2, characterized in that: The top and bottom surfaces of the press plate (22) are both provided with latches (26), and the piston rod (23) and the guide rod (24) are provided with clamping holes (27). After the piston rod (23) and the guide rod (24) are clamped in the grooves, the latches (26) pass through the clamping holes (27).

6. The cylinder liner press-fitting device according to claim 1, characterized in that: A plurality of limiting protrusions (13) for fixing the gearbox are arranged on the inner surface of the lower side of the machine platform (1).

7. The cylinder liner press-fitting device according to claim 1, characterized in that: A bearing rod (14) is also provided on the lower side of the machine platform (1), and the bearing rod (14) is used to mount the bearing on the gearbox.

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