Crankshaft oil seal installation tool

Abstract

The utility model discloses a crankshaft oil seal installation tool which comprises a fixing block. The lower end of the screw is in threaded connection with the fixed block; the pressing sleeve comprises a plurality of pressing sleeve split bodies, the multiple pressing sleeve split bodies are arranged around the fixing block, each pressing sleeve split body comprises a transverse plate, a vertical plate and an arc-shaped plate, the transverse plates are connected with the arc-shaped plates through the vertical plates, the supporting blocks are arranged on the screw rods in a sleeving mode, and the adjusting blocks are coaxially installed on the upper sides of the supporting blocks; the knob assembly comprises a pin, and the lower end of the pin is detachably connected to the adjusting block. The transverse plate is arranged between the supporting block and the adjusting block, the adjusting block is rotated through the knob assembly, and the transverse plate can move in the radial direction of the supporting block; a threaded section is arranged at the upper end part of the rotating sleeve and is in threaded connection with the upper end of the screw rod. The crankshaft oil seal installation tool has universality, the number of crankshaft oil seal installation tools of a service station is small, the maintenance cost of an engine is reduced, and then the use cost of the engine is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of engine technology, and in particular relates to a crankshaft oil seal installation fixture. Background Technology

[0002] The crankshaft oil seal installation fixture is used during engine maintenance and repair to place the crankshaft oil seal stably on the mounting crankshaft.

[0003] Existing crankshaft oil seal installation tools are simple in structure and have limited functionality. Various types of crankshaft oil seal installation fixtures are manufactured for different manufacturers and for different engine specifications, models, and sizes, making them non-interchangeable. This forces service stations to equip themselves with oil seal installation fixtures for each engine type. The more product series there are, the more tools are needed, resulting in larger footprints and higher costs. Service stations are less willing to purchase installation fixtures, affecting the quality of engine repairs and potentially leading to engine oil leaks due to the failure to use the correct fixtures. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a crankshaft oil seal installation fixture. The crankshaft oil seal installation fixture of this utility model is universal, which reduces the number of crankshaft oil seal installation fixtures required by service stations, reduces engine maintenance costs, and thus reduces engine operating costs.

[0005] To address the problems existing in the prior art, this utility model provides a crankshaft oil seal installation fixture, comprising: a fixing block; a screw, the lower end of which is threadedly connected to the fixing block; a pressure sleeve, the pressure sleeve comprising multiple pressure sleeve components arranged around the fixing block, each pressure sleeve component comprising a horizontal plate, a vertical plate, and an arc-shaped plate, the horizontal plate being connected to the arc-shaped plate via the vertical plate; a support block, the support block being sleeved on the screw, an adjusting block being coaxially mounted on the upper side of the support block; a knob assembly, the knob assembly comprising a pin, the lower end of which is detachably connected to the adjusting block; a horizontal plate disposed between the support block and the adjusting block, the horizontal plate being able to move radially along the support block by rotating the adjusting block via the knob assembly; and a rotating sleeve, the upper end of which is provided with a threaded section, the threaded section being threadedly connected to the upper end of the screw.

[0006] Furthermore, the crankshaft oil seal mounting fixture also includes a pressure cap, which is sleeved on the screw and positioned above the pressure sleeve; the knob assembly is provided in two sets, and the pressure cap has two arc-shaped holes opposite each other, with the upper parts of the two pins respectively inserted into the corresponding arc-shaped holes.

[0007] Furthermore, the upper part of the pin is provided with two threaded portions and two smooth portions along the outer peripheral surface, and the two threaded portions and the two smooth portions are arranged alternately.

[0008] Furthermore, a handle is provided at the upper end of the pin.

[0009] Furthermore, the upper surface of the support block is recessed with multiple sliding grooves corresponding to the horizontal plate, the multiple sliding grooves are equally spaced, the horizontal plate is installed in the sliding grooves, and the horizontal plate can slide along the opening direction of the sliding grooves.

[0010] Furthermore, the adjusting block is provided with constraint holes corresponding to the pressure sleeve, the constraint holes are evenly spaced, one end of the constraint hole is located close to the shaft center, and the other end of the constraint hole is located away from the shaft center.

[0011] Furthermore, a screw is provided on the horizontal plate, and a roller A is fitted on the screw, with the roller A constrained within the corresponding constraining hole.

[0012] Furthermore, the adjusting block is also provided with two connecting holes, which are respectively connected to the corresponding pins.

[0013] Furthermore, the lower end of the pin is provided with four claws spaced apart, and the four claws are arranged radially; corresponding to the claws, the side wall of the connecting hole is provided with four slots; during connection, each claw is inserted into the corresponding slot.

[0014] Furthermore, the fixing block is provided with a notch.

[0015] The beneficial effects achieved by this utility model due to the adoption of the above technical solution are as follows:

[0016] This utility model discloses a crankshaft oil seal installation fixture, comprising a fixing block; a screw with its lower end threadedly connected to the fixing block; a pressure sleeve comprising multiple pressure sleeve components arranged around the fixing block, each pressure sleeve component comprising a horizontal plate, a vertical plate, and an arc-shaped plate, the horizontal plate being connected to the arc-shaped plate via the vertical plate; a support block sleeved on the screw, with an adjusting block coaxially mounted on the upper side of the support block; a knob assembly comprising a pin, the lower end of which is detachably connected to the adjusting block; a horizontal plate positioned between the support block and the adjusting block, allowing the horizontal plate to move radially along the support block by rotating the adjusting block via the knob assembly; and a threaded section at the upper end of the rotating sleeve, threadedly connected to the upper end of the screw. This utility model's crankshaft oil seal installation fixture is versatile, reducing the number of crankshaft oil seal installation fixtures required at service stations, lowering engine maintenance costs, and consequently reducing engine operating costs. Attached Figure Description

[0017] Figure 1 This is a perspective view of the crankshaft oil seal installation fixture of this utility model;

[0018] Figure 2 This is a perspective view of the crankshaft oil seal installation fixture of this utility model (with the pressure cap removed);

[0019] Figure 3 This is a perspective view of the crankshaft oil seal installation fixture of this utility model (without the pressure cap, pressure nut, and base);

[0020] Figure 4 This is a schematic diagram of the crankshaft oil seal installation fixture of this utility model;

[0021] Figure 5 yes Figure 4 A sectional view along the AA direction;

[0022] Figure 6 yes Figure 5 A magnified view of a portion of region B in the middle;

[0023] Figure 7 yes Figure 4 Top view;

[0024] Figure 8 yes Figure 7 A cross-sectional view along the CC direction;

[0025] Figure 9 yes Figure 8 A magnified view of a portion of region D in the middle;

[0026] Figure 10 yes Figure 2 An enlarged 3D view of the central column pin;

[0027] Figure 11 yes Figure 1 An enlarged 3D view of the medium-pressure cover;

[0028] Figure 12 yes Figure 2 An enlarged 3D view of the central adjustment block;

[0029] Figure 13 yes Figure 1 Enlarged 3D view of the intermediate pressure sleeve components;

[0030] Figure 14 yes Figure 5 An enlarged 3D view of the central support block;

[0031] Figure 15 yes Figure 5 An enlarged 3D view of the fixed block in the middle;

[0032] Figure 16 yes Figure 5 An enlarged 3D view of the center gasket;

[0033] Figure 17 yes Figure 3 An enlarged 3D view of the rotating sleeve;

[0034] In the diagram: 1. Screw; 21. Handle; 22. Pin; 221. Threaded part; 222. Smooth part; 223. Claw; 3. Pressure cap; 31. Arc-shaped hole; 4. Adjusting block; 41. Constraint hole; 42. Connecting hole; 421. Slot; 5. Support block; 51. Slide groove; 52. Stud; 6. Pressure sleeve; 61. Horizontal plate; 62. Vertical plate; 63. Arc-shaped plate; 7. Fixing block; 71. Notch; 72. Threaded hole; 8. Reinforcing sleeve; 9. Rotating sleeve; 91. Threaded section; 92. Transition section; 93. Main body section; 10. Bearing; 11. Pressure cap; 12. Base; 13. Washer; 14. Roller A; 15. Screw; 16. Roller B. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] Depend on Figures 1 to 9 As shown in the figure, this embodiment discloses a crankshaft oil seal installation fixture, which includes a fixing block 7, a screw 1, a pressure sleeve, a support block 5, a knob assembly, and a rotating sleeve 9.

[0037] The lower end of the screw 1 is threadedly connected to the fixing block 7.

[0038] Preferably, a reinforcing sleeve 8 is fixedly provided on the upper surface of the fixing block 7, and the reinforcing sleeve 8 is threadedly connected to the screw 1.

[0039] Combination Figure 1 as well as Figure 13 As shown in the figure, the pressure sleeve includes multiple pressure sleeve components 6, which are arranged around the fixing block 7. Each pressure sleeve component 6 includes a horizontal plate 61, a vertical plate 62, and an arc-shaped plate 63. The horizontal plate 61 is connected to the arc-shaped plate 63 through the vertical plate 62. In this embodiment, four pressure sleeve components 6 are provided.

[0040] The support block 5 is sleeved on the screw 1, and the adjusting block 4 is coaxially installed on the upper side of the support block 5.

[0041] Combination Figure 2 , Figure 5 ,as well as Figure 10 As shown, the knob assembly includes a pin 22, the lower end of which is detachably connected to the adjusting block 4.

[0042] The horizontal plate 61 is positioned between the support block 5 and the adjusting block 4. By rotating the adjusting block 4 using the knob assembly, the horizontal plate 61 can move radially along the support block 5.

[0043] Combination Figure 1 as well as Figure 17 As shown, the upper end of the rotating sleeve 9 is provided with a threaded section 91, which is threadedly connected to the upper end of the screw 1.

[0044] Preferably, combined with Figure 1 and Figure 11 As shown in the figure, the crankshaft oil seal mounting fixture also includes a pressure cover 3, which is sleeved on the screw 1 and positioned above the pressure sleeve.

[0045] The knob assembly is provided in two sets. The pressure cover 3 has two arc-shaped holes 31 facing each other, and the upper parts of the two pins 22 are respectively inserted into the corresponding arc-shaped holes 31.

[0046] Preferably, combined with Figure 17 As shown, the upper part of the pin 22 is provided with two threaded portions 221 and two smooth portions 222 along the outer peripheral surface, and the two threaded portions 221 and the two smooth portions 222 are arranged alternately.

[0047] Preferably, combined with Figure 1 As shown, a handle 21 is provided at the upper end of the pin 22.

[0048] Combination Figure 2 , Figure 3 , Figure 5 ,as well as Figure 14 As shown, the upper surface of the support block 5 is recessed into the horizontal plate 61, forming multiple sliding grooves 51. These grooves 51 are evenly spaced, and the horizontal plate 61 is installed within each groove 51, allowing it to slide along the opening direction of the groove 51. In this embodiment, four grooves 51 are provided. The support block 5 is also provided with axial studs 52, which have external threads.

[0049] Combination Figure 2 , Figure 3 , Figure 4 , Figure 5 ,as well as Figure 12 As shown, the adjusting block 4 is provided with a constraint hole 41 corresponding to the pressure sleeve 6. The constraint holes 41 are evenly spaced, with one end of the constraint hole 41 being close to the shaft center and the other end being away from the shaft center.

[0050] Preferably, a screw 15 is fixedly provided on the horizontal plate 61 of the pressure sleeve 6, and a roller A14 is sleeved on the screw 15. The roller A14 is constrained in the corresponding constraint hole 41 and can roll in the corresponding constraint hole 41.

[0051] More preferably, the adjusting block 4 is also provided with two connecting holes 42, which are respectively connected to the corresponding pins 22.

[0052] A roller B16 is also fitted on the screw 1. The adjusting block 4 is rotatably fitted on the outer circumference of the roller B16. The use of the roller B16 makes the rotation of the adjusting block 4 smoother.

[0053] Combination Figure 2 , Figure 7 , Figure 8 , Figure 9 , Figure 10 ,as well as Figure 12 As shown, the lower end of the pin 22 is provided with four claws 223 at intervals, and the four claws 223 are arranged radially; corresponding to the claws 223, four slots 421 are provided on the side wall of the connecting hole 42; when connecting, each claw 223 is inserted into the corresponding slot 421.

[0054] like Figure 4 , Figure 5 ,as well as Figure 15 As shown, a notch 71 is provided on the fixing block 7, and a threaded hole 72 is also provided in the center of the fixing block 7. In actual installation, the screw 1 can be connected to the fixing block 7 through the threaded hole 72. The fixing block 7 has notches 71 of different sizes. By using a bolt (not shown in the figure) to pass through the notch 71, the fixing block is installed on the crankshaft (not shown in the figure). The setting of notches 71 of different sizes is used to correspond to the mounting holes and locating pin holes at the rear end of different series of crankshafts, which facilitates the installation of the fixing block on the crankshaft.

[0055] Combination Figure 4 , Figure 5 ,as well as Figure 16 As shown, the diameter of the lower part of the fixing block 7 is smaller than the diameter of the upper part of the fixing block 7, and a gasket 13 is provided on the outer peripheral surface of the lower part of the fixing block 7.

[0056] Combination Figure 2 , Figure 3 , Figure 4 , Figure 5 ,as well as Figure 17 As shown, the rotating sleeve 9 also includes a main body section 93 and a transition section 92. The main body section 93 and the threaded section 91 are connected together via the transition section 92. A bearing 10 is provided on the outer circumferential surface of the transition section 92, and a bearing 10 is also provided at the lower end of the main body section 93. The crankshaft oil seal mounting fixture also includes a base 12 and a pressure cap 11. The pressure cap 11 is threaded onto the base 12. The pressure cap 11 and the base 12 together enclose an internal space. The main body section 93, the transition section 92, and the two bearings 10 are all located within the internal space enclosed by the base 12 and the pressure cap 11. The base 12 is threaded onto a stud 52.

[0057] The following is a detailed description of the process of installing a crankshaft oil seal on a crankshaft using the crankshaft oil seal installation fixture of this utility model:

[0058] First, connect screw 1 to fixing block 7, and then fix fixing block 7 on crankshaft; then install pressure sleeve 6 between support block 5 and adjusting block 4, and sleeve support block 5 on screw 1. At this time, rotate adjusting block 4 to drive pressure sleeve 6 to move radially along the radial direction of support block 5, thereby realizing the adjustment of the radial position of pressure sleeve 6. After adjusting to the appropriate position, screw the threaded section 91 of rotating sleeve 9, and pressure sleeve 6 moves axially along screw 1 to press crankshaft oil seal to the appropriate position.

[0059] When the smooth part 222 of the pin 22 engages with the pressure cap 3, the pin 22 can move within the corresponding arc-shaped hole 41, and the handle 21 and the pin 22 can operate the adjusting block 4 to rotate, thereby causing the pressure sleeve 6 to perform radial opening and closing movements; when the threaded part 221 of the pin 22 engages with the pressure cap 3, the pin 22 cannot move within the corresponding arc-shaped hole 41, and the handle 21 and the pin 22 cannot operate the adjusting block 4 to rotate, thereby preventing the pressure sleeve 6 from performing radial opening and closing movements.

[0060] The crankshaft oil seal installation fixture of this utility model uses a rotating adjusting block 4 to drive the pressure sleeve split body 6 to move radially, thereby adjusting the working diameter of the pressure sleeve split body 6. This achieves the universality of the crankshaft oil seal installation fixture, reduces the number of crankshaft oil seal installation fixtures, and lowers development costs and service station procurement costs.

[0061] The technical features with serial numbers mentioned in this manual (such as roller A, roller B, etc.) are only for distinguishing each technical feature and do not represent the positional relationship, installation sequence, or working sequence of the technical features.

[0062] In the description of this specification, it should be understood that the orientation or positional relationship described by terms such as "outer peripheral surface", "upper side", "above", and "upper part" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crankshaft oil seal installation fixture, characterized in that, include: Fixed block; A screw, the lower end of which is threadedly connected to the fixing block; A pressure sleeve, comprising multiple pressure sleeve components arranged around the fixing block, each pressure sleeve component comprising a horizontal plate, a vertical plate, and an arc-shaped plate, wherein the horizontal plate is connected to the arc-shaped plate via the vertical plate; A support block is sleeved on the screw, and an adjusting block is coaxially mounted on the upper side of the support block; A knob assembly, the knob assembly including a pin, the lower end of the pin being detachably connected to the adjusting block; The horizontal plate is disposed between the support block and the adjusting block. By rotating the adjusting block through the knob assembly, the horizontal plate can move in the radial direction of the support block. A rotating sleeve, the upper end of which is provided with a threaded section, the threaded section being threadedly connected to the upper end of the screw.

2. The crankshaft oil seal installation fixture according to claim 1, characterized in that, The crankshaft oil seal installation fixture also includes a pressure cap, which is sleeved on the screw and positioned above the pressure sleeve; the knob assembly is provided in two sets, and the pressure cap has two arc-shaped holes opposite each other, with the upper parts of the two pins respectively inserted into the corresponding arc-shaped holes.

3. The crankshaft oil seal installation fixture according to claim 2, characterized in that, The upper part of the pin is provided with two threaded portions and two smooth portions along its outer circumference, and the two threaded portions and the two smooth portions are arranged alternately.

4. The crankshaft oil seal installation fixture according to claim 1, characterized in that, A handle is provided at the upper end of the pin.

5. The crankshaft oil seal installation fixture according to claim 1, characterized in that, The upper surface of the support block has multiple grooves that are recessed into the horizontal plate. The grooves are evenly spaced, the horizontal plate is installed in the grooves, and the horizontal plate can slide along the opening direction of the grooves.

6. The crankshaft oil seal installation fixture according to claim 1, characterized in that, The adjusting block is provided with constraint holes corresponding to the pressure sleeve. The constraint holes are evenly spaced, with one end of the constraint hole being close to the shaft center and the other end being away from the shaft center.

7. The crankshaft oil seal installation fixture according to claim 6, characterized in that, The horizontal plate is provided with screws, and rollers A are fitted on the screws. Rollers A are constrained in the corresponding constraining holes.

8. The crankshaft oil seal installation fixture according to claim 7, characterized in that, The adjusting block is also provided with two connecting holes, which are respectively connected to the corresponding pins.

9. The crankshaft oil seal installation fixture according to claim 8, characterized in that, The lower end of the pin is provided with four claws spaced apart, and the four claws are arranged radially; corresponding to the claws, the side wall of the connecting hole is provided with four slots; during connection, each claw is inserted into the corresponding slot.

10. The crankshaft oil seal installation fixture according to claim 1, characterized in that, The fixing block has a notch.

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