Engine piston ring installation expander

Abstract

The utility model relates to piston ring installation technical field and disclose an engine piston ring installation expander, including support shell and abutment piece, the number of abutment piece is two and mutually symmetrical, its characterized in that: the inside of support shell is equipped with mutually symmetrical shell, both sides of shell are fixedly installed with support frame, the inside rotation of shell is connected with screw rod, in use, abutment piece is through structural characteristics and piston ring both ends accurate clamping, under the operation of speed reducer, make the guide ring from the lowest point to the highest point, will realize the expansion of piston ring through the connecting plate, at this moment can smoothly carry out the disassembly and installation of piston ring. The design makes the expander have stable torque output when working, especially when coping with big size rough specification piston ring, effectively avoid the hand fatigue problem caused by long time manual operation, significantly reduce the operation discomfort of staff in high frequency maintenance operation.

Description

Technical Field

[0001] This utility model belongs to the field of piston ring installation technology, and specifically relates to an engine piston ring installation expander. Background Technology

[0002] A piston ring installation expander is a specialized tool used to assist in the installation of piston rings. Its main function is to evenly expand the piston rings during installation, preventing deformation, breakage, or improper installation due to uneven manual force, thereby ensuring the sealing and normal operation of the engine piston assembly. The following provides a detailed explanation of its structure, working principle, types, usage methods, and precautions.

[0003] Manual lever or spiral piston ring expanders require manual application of force, and beginners are prone to causing piston ring breakage due to uneven force. Lever expanders require torque exceeding 15 N·m when expanding larger diameter piston rings; prolonged operation can easily lead to hand fatigue, and sudden force can cause the ring to over-expand and break. Piston rings often designed for specific models are not compatible with other sizes, requiring repair personnel to carry multiple tools. For example, different expanders are needed for repairing cars and trucks, increasing tool costs by more than 30%. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an engine piston ring mounting expander.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an engine piston ring mounting expander, comprising a support shell (1) and abutment (103), wherein the number of abutment (103) is two and they are symmetrical to each other, characterized in that: the inner side of the support shell (1) is provided with mutually symmetrical sliding shells, both sides of the sliding shell are fixedly installed with support frames, and the interior of the sliding shell is rotatably connected with a screw.

[0006] The inner side of the support shell is provided with a disc, and one side of the disc is provided with a guide ring. A mounting component one is fixedly installed on the top of the guide ring. One end of the mounting component one is rotatably connected to a connecting plate via a rotating shaft. One end of each of the two connecting plates is rotatably connected to a mounting component two. A fixing block is fixedly installed on the top of the mounting component two, penetrating the support frame and fixedly connected to the bottom of the movable shell.

[0007] Preferably, the support frame and the support shell are fixedly connected to each other, and the screw has a threaded block located inside the shell.

[0008] Preferably, a connector is fixedly installed on the top of the threaded block, extending through to the top of the movable shell and fixedly connected to the abutment, and one end of the screw extends through to one end of the movable shell and is fixedly installed with a knob.

[0009] Preferably, a geared motor is provided on one side of the support shell, and a support member that is fixedly connected to the support shell is fixedly sleeved on the surface of the geared motor.

[0010] Preferably, the output end of the geared motor is fixedly sleeved with a shaft that extends into the interior of the support housing via a coupling. The shaft and the support housing are rotatably connected via bearings, and one end of the shaft is fixedly connected to the disc.

[0011] Preferably, sliders are fixedly installed on both sides of the movable shell, and a sliding groove is provided on the inner side of the support frame, with the sliding groove and the slider slidingly connected to each other.

[0012] Preferably, the bottom of the support frame has a through cavity for use with the fixing block.

[0013] Preferably, a handle located on both sides of the geared motor is fixedly installed on one side of the support shell, and the surface of the handle is covered with an anti-slip sleeve.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. When using this expander, the operator can hold it with one hand or operate it with both hands. First, adjust the distance between the contact parts according to the size of the piston ring to be installed. After observing the distance between the openings at both ends of the piston ring, rotate the knobs on both sides to precisely adjust the relative distance between the two contact parts. This adjustment mechanism can accommodate piston rings of different sizes, breaking the limitation of traditional expanders designed only for specific models, avoiding the cumbersome situation of maintenance personnel needing to keep multiple sets of tools, and significantly improving the tool's versatility.

[0016] 2. During use, the abutment component precisely engages with both ends of the piston ring through its structural characteristics. Under the operation of the geared motor, the guide ring rises from its lowest point to its highest point, expanding the piston ring via the connecting plate. This allows for smooth disassembly and installation of the piston ring. This design ensures stable torque output from the expander during operation, especially when dealing with large-sized, thick-gauge piston rings. It effectively avoids hand fatigue caused by prolonged manual operation and significantly reduces discomfort for workers during high-frequency maintenance tasks.

[0017] 3. During use, the geared motor operates under the control of an external controller, a mature existing technology that will not be detailed here. The geared motor drives the shaft and disc to rotate synchronously, and the guide block moves around the center of the shaft, thereby driving the guide ring to produce longitudinal displacement. This motion forms a reciprocating motion pattern under the drive of the motor. When the disc rotates half a revolution, the guide ring rises from the lowest point of its stroke to the highest point. Utilizing the low-speed transmission characteristics of the geared motor, the operator can precisely control the geared motor to stop at the target position. Furthermore, this design eliminates the need for the drive equipment to return to its starting position, effectively ensuring the service life of the drive equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is an enlarged schematic diagram showing the support frame, the movable shell, and the disc used in conjunction with this utility model.

[0020] Figure 3 This is an enlarged cross-sectional view of the removable shell of this utility model;

[0021] Figure 4 This is an exploded and enlarged schematic diagram of the support frame, connecting plate, and guide ring of this utility model;

[0022] Figure 5 This is an exploded and enlarged schematic diagram of the geared motor, disc, and guide ring of this utility model.

[0023] Figure label:

[0024] 1. Support shell; 101. Support frame; 102. Migration shell; 103. Abutment component;

[0025] 2. Screw; 201. Threaded block; 202. Knob; 203. Connector;

[0026] 3. Gear motor; 301. Support component; 302. Shaft; 303. Disc;

[0027] 4. Guide ring; 401. Guide block;

[0028] 5. Mounting Component 1; 501. Connecting Plate; 502. Mounting Component 2; 503. Fixing Block;

[0029] 6. Slider; 601. Slide groove; 602. Through cavity;

[0030] 7. Handle; 701. Anti-slip sleeve. Detailed Implementation

[0031] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0032] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0033] refer to Figures 1-5 An engine piston ring mounting expander includes a support shell 1 and abutment members 103. The number of abutment members 103 is two and they are symmetrical to each other. The feature is that: the inner side of the support shell 1 is provided with mutually symmetrical sliding shells 102, and the two sides of the sliding shells 102 are fixedly installed with support frames 101. The interior of the sliding shells 102 is rotatably connected with screws 2.

[0034] The inner side of the support shell 1 is provided with a disc 303, and a guide ring 4 is provided on one side of the disc 303. A mounting component 1 5 is fixedly installed on the top of the guide ring 4. One end of the mounting component 1 5 is rotatably connected to a connecting plate 501 via a rotating shaft. One end of each of the two connecting plates 501 is rotatably connected to a mounting component 2 502. A fixing block 503 is fixedly installed on the top of the mounting component 2 502, penetrating the support frame 101 and fixedly connected to the bottom of the movable shell 102.

[0035] Specifically, in use, the abutment 103 precisely engages with both ends of the piston ring through its structural characteristics. Under the operation of the reduction motor 3, the guide ring 4 rises from its lowest point to its highest point, expanding the piston ring via the connecting plate 501. At this point, the piston ring can be easily disassembled and installed. This design enables the expander to have a stable torque output during operation, especially when dealing with large-sized, thick-gauge piston rings. It effectively avoids hand fatigue caused by prolonged manual operation and significantly reduces the discomfort experienced by workers during high-frequency maintenance.

[0036] The support frame 101 and the support shell 1 are fixedly connected to each other. The screw 2 has a threaded block 201 located inside the movable shell 102. The support frame 101 will be fixedly supported inside the support shell 1 through the fixed connection. The rotation of the screw 2 will drive the threaded block 201 to move laterally through the threaded connection.

[0037] A connector 203 is fixedly installed on the top of the threaded block 201, extending through to the top of the movable housing 102 and fixedly connected to the abutment 103. One end of the screw 2 extends through to one end of the movable housing 102 and is fixedly installed with a knob 202. The movement of the threaded block 201 will drive the connector 203 and the abutment 103 to move, and the rotation of the knob 202 will drive the screw 2 to rotate.

[0038] A geared motor 3 is provided on one side of the support shell 1. A support member 301, which is fixedly connected to the support shell 1, is fixedly sleeved on the surface of the geared motor 3. The support member 301 will support and fix the geared motor 3.

[0039] The output end of the geared motor 3 is fixedly connected to a shaft 302 that penetrates into the support shell 1 via a coupling. The shaft 302 and the support shell 1 are rotatably connected to each other via bearings. One end of the shaft 302 is fixedly connected to the disc 303. The operation of the geared motor 3 will drive the shaft 302 to rotate, and the rotation of the shaft 302 will drive the disc 303 to rotate.

[0040] Slider 6 is fixedly installed on both sides of the movable shell 102. A sliding groove 601 is provided on the inner side of the support frame 101. The sliding groove 601 and the slider 6 are slidably connected to each other. Through the sliding connection between the slider 6 and the sliding groove 601, the movable shell 102 will be moved and guided inside the support frame 101.

[0041] The bottom of the support frame 101 is provided with a through cavity 602 for use with the fixing block 503. The through cavity 602 provides the fixing block 503 with a moving through space inside the support frame 101.

[0042] A handle 7 is fixedly installed on one side of the support shell 1, located on both sides of the geared motor 3. The surface of the handle 7 is covered with an anti-slip sleeve 701. The handle 7 facilitates the movement and handling of the expander structure. The anti-slip sleeve 701 increases the friction of the surface of the handle 7.

[0043] The working principle of this utility model is as follows: During use, the operator can hold the expander structure with one hand or both hands using the handle 7. First, the distance between the abutment parts 103 needs to be adjusted according to the size of the piston ring to be installed. After observing the distance between the openings at both ends of the piston ring, the knobs 202 on both sides are rotated respectively. The knobs 202 drive the screw 2 to rotate, and the threaded block 201 then drives the connecting part 203 and the abutment part 103 to move axially along the moving shell 102, so as to accurately adjust the relative distance between the two abutment parts 103.

[0044] The abutment part 103 precisely engages with both ends of the piston ring through its structural characteristics. The geared motor 3 operates under the control of an external controller; this is a mature existing technology and will not be detailed here. The operation of the geared motor 3 drives the shaft 302 and the disc 303 to rotate synchronously. The guide block 401 moves around the center trajectory of the shaft 302, thereby driving the guide ring 4 to produce longitudinal displacement. This movement forms a reciprocating motion mode under the drive of the motor. When the disc 303 rotates half a revolution, the guide ring 4 rises from the lowest point of its stroke to the highest point. With the help of the low-speed transmission characteristics of the geared motor 3, the operator can precisely control the geared motor 3 to stop at the target position. At this time, the mounting part 1 5 moves upward and pulls the connecting plate 501. One end of the connecting plate 501 drives the mounting part 2 502, the fixing block 503, and the shifting shell 102 to move laterally inside the support frame 101, so that the mounting part 1 5 and the mounting part 2 502 move closer to each other longitudinally, while the two shifting shells 102 move away from each other in opposite directions. This achieves the expansion of the piston ring, at which point the piston ring can be easily disassembled and installed.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An engine piston ring mounting expander, comprising a support shell (1) and abutment members (103), wherein the number of abutment members (103) is two and they are symmetrical to each other, characterized in that: The inner side of the support shell (1) is provided with mutually symmetrical sliding shells (102), and the two sides of the sliding shell (102) are fixedly installed with support frames (101), and the interior of the sliding shell (102) is rotatably connected with screws (2). The inner side of the support shell (1) is provided with a disc (303), and a guide ring (4) is provided on one side of the disc (303). A mounting component one (5) is fixedly installed on the top of the guide ring (4). One end of the mounting component one (5) is rotatably connected to a connecting plate (501) via a rotating shaft. One end of each of the two connecting plates (501) is rotatably connected to a mounting component two (502). A fixing block (503) is fixedly installed on the top of the mounting component two (502) that penetrates the support frame (101) and is fixedly connected to the bottom of the movable shell (102).

2. The engine piston ring mounting expander according to claim 1, characterized in that: The support frame (101) and the support shell (1) are fixedly connected to each other, and the screw (2) has a threaded block (201) located inside the movable shell (102) connected to its surface.

3. An engine piston ring mounting expander according to claim 2, characterized in that: The top of the threaded block (201) is fixedly installed with a connector (203) that extends through to the top of the movable shell (102) and is fixedly connected to the abutment (103). One end of the screw (2) extends through to one end of the movable shell (102) and is fixedly installed with a knob (202).

4. An engine piston ring mounting expander according to claim 1, characterized in that: A geared motor (3) is provided on one side of the support shell (1), and a support member (301) is fixedly sleeved on the surface of the geared motor (3) and fixedly connected to the support shell (1).

5. An engine piston ring mounting expander according to claim 4, characterized in that: The output end of the geared motor (3) is fixedly sleeved with a shaft (302) that penetrates into the support shell (1) through a coupling. The shaft (302) and the support shell (1) are rotatably connected to each other through bearings. One end of the shaft (302) is fixedly connected to the disc (303).

6. An engine piston ring mounting expander according to claim 1, characterized in that: The sliding shell (102) has sliders (6) fixedly installed on both sides, and the inner side of the support frame (101) has a sliding groove (601) that is slidably connected to the slider (6).

7. An engine piston ring mounting expander according to claim 1, characterized in that: The bottom of the support frame (101) is provided with a through cavity (602) for use with the fixing block (503).

8. An engine piston ring mounting expander according to claim 4, characterized in that: The support shell (1) is fixedly installed with handles (7) on both sides of the geared motor (3), and the surface of the handles (7) is covered with anti-slip sleeves (701).

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