Stable oil seal leading-in device

Abstract

The utility model provides a stable oil seal leading-in device, and relates to the technical field of oil seal leading-in devices. A center positioning seat is arranged on the large end face of the guide cone in a flush mode, a handle is arranged on the small end face of the guide cone, a connecting bolt is arranged on the handle, the guide cone and the center positioning seat together, and a nut is arranged at the screw rod end of the connecting bolt in a threaded connection mode. Through the arrangement of the connecting bolt and the nut, the handle, the guide cone and the center positioning seat can be disassembled, so that when the guide cone is abraded, the guide cone can be independently replaced, other accessories can be continuously used, the tool cost is reduced, and meanwhile resource waste can be avoided.

Description

Technical Field

[0001] The present application relates to the field of oil seal introduction devices, and in particular to a stable oil seal introduction device. Background Art

[0002] When installing the engine crankshaft oil seal, the inner hole of the oil seal in its uninstalled state is smaller than that in its working state (i.e. the circumference of the crankshaft head of the oil seal sealing surface). Before the oil seal enters the crankshaft head during installation, it must be expanded to a size larger than the circumference of the crankshaft head through the oil seal introduction tooling before it can be assembled.

[0003] For example, in a crankshaft rear oil seal introduction device disclosed in China Publication No. CN207087763U, the guide cone, center positioning seat and handle of the oil seal introduction tooling are fixedly connected together. However, since the oil seal introduction tooling including the guide cone, center positioning seat and handle are all made of nylon, during long-term use, since nylon is a wearing part, the guide cone is usually the one that wears faster. The wear of the guide cone will cause poor oil seal effect, so the entire tooling needs to be replaced, and the unworn parts will be discarded, resulting in a waste of resources. Summary of the invention

[0004] In order to overcome the existing deficiencies, an embodiment of the present application provides a smooth oil seal introduction device, which can solve the problem that the above-mentioned nylon is a wearing part. Usually, the guide cone wears faster, and the wear of the guide cone will cause poor oil seal effect. In this way, the entire tooling needs to be replaced, and the unworn parts will be discarded, resulting in a waste of resources.

[0005] The technical solution adopted by the embodiment of the present application to solve its technical problem is: a smooth oil seal introduction device, including a guide cone.

[0006] The large end surface of the guide cone is flush with a center positioning seat, the small end surface of the guide cone is provided with a handle, the handle, the guide cone and the center positioning seat are commonly provided with connecting bolts, and the screw rod end of the connecting bolt is threadedly provided with a nut.

[0007] In a specific embodiment, the outer end of the handle is detachably provided with an extension handle.

[0008] In a specific embodiment, the outer cover of the extension handle is provided with an anti-slip cover.

[0009] In a specific embodiment, a first clearance groove is formed at one end of the extension handle near the handle, a connecting screw is fixedly connected inside the first clearance groove, the connecting screw is threadedly connected to the handle, and the inner wall of the first clearance groove contacts the outer wall of the handle.

[0010] In a specific embodiment, a hook portion is fixedly connected to the other end of the handle.

[0011] In a specific implementation manner, a second clearance groove is formed on the large end surface of the guide cone, and the center positioning seat is arranged inside the second clearance groove.

[0012] In a specific embodiment, the guide cone is provided with magnet blocks in a ring array, and the end face of each magnet block is arranged horizontally with the end face of the guide cone.

[0013] In a specific implementation manner, a positioning pin is fixedly connected to the inner side of the center positioning seat, and a positioning groove matching with the positioning pin is formed on the large end surface of the guide cone.

[0014] The advantages of the embodiments of the present application are:

[0015] By setting the connecting bolts and nuts, the handle, guide cone and center positioning seat can be disassembled, so that when the guide cone is worn, it can be replaced separately, and the remaining accessories can continue to be used, reducing tooling costs while avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a stable oil seal introduction device provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the extension handle structure provided in an embodiment of the present application;

[0018] Figure 3 This is a schematic structural diagram of the connection relationship between the guide cone, the center positioning seat and the handle provided in an embodiment of the present application.

[0019] In the figure: 1-guide cone; 101-third clearance groove; 102-rounded corner; 103-second clearance groove; 2-center positioning seat; 21-fourth clearance groove; 3-handle; 31-fifth clearance groove; 4-connecting bolt; 5-nut; 6-magnet block; 7-extension handle; 71-first clearance groove; 8-anti-slip sleeve; 9-hook part; 10-connecting screw; 11-locating pin. DETAILED DESCRIPTION

[0020] The technical solution in the embodiment of the present application is to solve the problem that the above-mentioned nylon is a wearing part, and the guide cone is usually the one with the fastest wear speed. The wear of the guide cone will cause the oil seal effect to be poor, so the whole tooling needs to be replaced, and the unworn parts will also be discarded, resulting in a waste of resources. The overall idea is as follows:

[0021] See also Figure 1-Figure 3 , a smooth oil seal introduction device, including a guide cone 1.

[0022] See also Figure 1 , Figure 2 and Figure 3 The large end face of the guide cone 1 is flush with a center positioning seat 2. Specifically, the center positioning seat 2 is provided with a fourth clearance groove 21, and the nut 5 is located inside the fourth clearance groove 21. The small end face of the guide cone 1 is provided with a handle 3. Specifically, the small end face of the guide cone 1 is provided with a third clearance groove 101, and the handle 3 is arranged inside the third clearance groove 101. The large end face of the guide cone 1 is provided with a fillet 102. The setting of the fillet 102 avoids the fillet 102 at the root of the edge to interfere with the chamfered edge of the crankshaft, ensuring that the edge fully fits and wraps the chamfer of the crankshaft, and the center positioning seat 2 is inserted into the screw hole of the crankshaft. The guide cone 1 always maintains a uniform posture during work, avoiding the edge slipping out of the chamfer due to tilting, and eliminating the quality risk of damaging the oil seal. The handle 3, the guide cone 1 and the center positioning seat 2 are jointly provided with a connecting bolt 4, and the screw end of the connecting bolt 4 is threaded with a nut 5. Among them, each part needs to be cleaned and then assembled. Grab the handle 3, align the center positioning seat 2 with the screw hole at the rear end of the crankshaft, insert and position it until the large end face of the guide cone 1 is flush with the rear end face and the outer chamfer of the crankshaft, and then apply force inward to make the guide cone 1 firmly attached to the rear end face of the crankshaft, so that the oil seal can be smoothly assembled on the crankshaft. When the guide cone 1 is worn after long-term use and needs to be replaced, loosen the nut 5, and then unscrew the connecting bolt 4 from the handle 3, the guide cone 1 and the center positioning seat 2, and then take out the new guide cone 1, connect the handle 3 and the center positioning seat 2 to the small end face and the large end face of the guide cone 1 respectively, and then install the connecting bolt 4 and tighten it with the nut 5 to replace the guide cone 1. By setting the connecting bolt 4 and the nut 5, the handle 3, the guide cone 1 and the center positioning seat 2 can be disassembled, so that when the guide cone 1 is worn, it can be replaced separately, and the other accessories can continue to be used, which reduces the cost of tooling and avoids the waste of resources.

[0023] The outer end of the handle 3 is detachably provided with an extension handle 7. The outer side of the extension handle 7 is provided with an anti-slip sleeve 8. The extension handle 7 is provided with a first clearance groove 71 near one end of the handle 3, and a connecting screw 10 is fixedly connected inside the first clearance groove 71. Specifically, the handle 3 is provided with a fifth clearance groove 31, and the connecting screw 10 is screwed with the inner part of the fifth clearance groove 31. The connecting bolt 4 and the fifth clearance groove 31 pass through the handle 3, the guide cone 1 and the center positioning seat 2 in sequence. The connecting bolt 4 can be screwed with the handle 3, the guide cone 1 and the center positioning seat 2 or can be movably penetrated. The first connecting screw 10 is screwed with the handle 3, and the inner wall of the first clearance groove 71 contacts the outer wall of the handle 3. The other end of the handle 3 is fixedly connected with a hook part 9. Among them, by setting the extension handle 7, the length of the handle 3 can be shortened, which is convenient for the disassembly of the connecting bolt 4, and the length of the handle 3 can be extended, which is convenient for the staff to grasp. And when replacing the guide cone 1, the extension handle 7 can be unscrewed first, and then the connecting bolt 4 can be disassembled. The anti-skid sleeve 8 can increase the anti-skid effect of the extension handle 7, and the hook portion 9 facilitates the hanging of the entire tooling.

[0024] The large end surface of the guide cone 1 is provided with a second clearance groove 103, and the center positioning seat 2 is arranged inside the second clearance groove 103. This facilitates the connection between the center positioning seat 2 and the guide cone 1 and reduces the volume of the entire device.

[0025] The guide cone 1 is provided with magnet blocks 6 in a circular array, and the end face of each magnet block 6 is arranged horizontally with the end face of the guide cone 1. When the center positioning seat 2 is aligned with the screw hole at the rear end of the crankshaft and inserted for positioning, the magnet block 6 absorbs the end face of the crankshaft, making the guide cone 1 more stable during operation.

[0026] A positioning pin 11 is fixedly connected to the inner side of the center positioning seat 2. Specifically, the positioning pin 11 is square. A positioning groove matching the positioning pin 11 is provided on the large end surface of the guide cone 1. The positioning pin 11 makes the connection between the guide cone 1 and the center positioning seat 2 more stable, and the connecting bolt 4 is not prone to stripping.

[0027] When using this application:

[0028] All parts need to be cleaned and then assembled. Grab the handle 3, align the center positioning seat 2 with the screw hole at the rear end of the crankshaft and insert it until the large end face of the guide cone 1 is flush with the rear end face and the outer chamfer of the crankshaft, and then force it inward to make the guide cone 1 firmly sucked on the rear end face of the crankshaft, so that the oil seal can be smoothly assembled on the crankshaft. When the guide cone 1 is worn after long-term use and needs to be replaced, loosen the nut 5, and then unscrew the connecting bolt 4 from the handle 3, the guide cone 1 and the center positioning seat 2, and then take out the new guide cone 1, connect the handle 3 and the center positioning seat 2 to the small end face and the large end face of the guide cone 1 respectively, and then install the connecting bolt 4 and tighten it with the nut 5 to replace the guide cone 1. By setting the connecting bolt 4 and the nut 5, the handle 3, the guide cone 1 and the center positioning seat 2 can be disassembled, so that when the guide cone 1 is worn, it can be replaced separately, and the remaining accessories can continue to be used, reducing the cost of tooling and avoiding waste of resources.

[0029] In summary, the present application utilizes the setting of connecting bolts 4 and nuts 5 to achieve the disassembly of the handle 3, guide cone 1 and center positioning seat 2, so that when the guide cone 1 is worn, it can be replaced alone, and the remaining accessories can continue to be used, reducing tooling costs while avoiding waste of resources.

[0030] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A stable oil seal introduction device, characterized in that: include A guide cone (1), wherein the large end surface of the guide cone (1) is flush with a center positioning seat (2), and the small end surface of the guide cone (1) is provided with a handle (3). The handle (3), the guide cone (1) and the center positioning seat (2) are commonly provided with a connecting bolt (4), and a nut (5) is threadedly provided at the screw end of the connecting bolt (4).

2. The stable oil seal introduction device according to claim 1, characterized in that: The outer end of the handle (3) is detachably provided with an extension handle (7).

3. The stable oil seal introduction device according to claim 2, characterized in that: The extension handle (7) is externally covered with an anti-slip cover (8).

4. The stable oil seal introduction device according to claim 3, characterized in that: The extension handle (7) is provided with a first clearance groove (71) at one end close to the handle (3), a connecting screw (10) is fixedly connected inside the first clearance groove (71), the connecting screw (10) is threadedly connected to the handle (3), and the inner wall of the first clearance groove (71) is in contact with the outer wall of the handle (3).

5. The stable oil seal introduction device according to claim 3, characterized in that: The other end of the handle (3) is fixedly connected with a hook portion (9).

6. The stable oil seal introduction device according to claim 1, characterized in that: The large end surface of the guide cone (1) is provided with a second clearance groove (103), and the center positioning seat (2) is arranged inside the second clearance groove (103).

7. The stable oil seal introduction device according to claim 6, characterized in that: The guide cone (1) is provided with magnet blocks (6) in a ring array, and the end face of each magnet block (6) is arranged horizontally with the end face of the guide cone (1).

8. The stable oil seal introduction device according to claim 1, characterized in that: A positioning pin (11) is fixedly connected to the inner side of the central positioning seat (2), and a positioning groove matching the positioning pin (11) is formed on the large end surface of the guide cone (1).

Images