An oil seal introduction tooling

Abstract

The present application provides an oil seal introduction tooling, which relates to the technical field of oil seal introduction, including an oil seal introduction component and a handle component. A clearance groove is provided at the large end of the introduction sleeve, and a first circular hole and a second circular hole are respectively provided inside the clearance groove at the large end of the introduction sleeve, the magnet block is fixed inside the first circular hole, the positioning pin is fixed inside the second circular hole, and a rounded corner is provided on the outside of the clearance groove at the large end of the introduction sleeve; one end of the handle is fixed to one end of the first threaded rod, and the other end of the first threaded rod is detachably fixed to the small end of the introduction sleeve, and a locking nut is provided on the outer threaded sleeve of the first threaded rod. By setting the clearance groove and the rounded corner, the rounded corner at the root of the edging is prevented from interfering with the chamfered edge of the crankshaft, ensuring that the edging fully fits and wraps the chamfer of the crankshaft. A positioning pin is added and inserted into the screw hole of the crankshaft, so that the introduction sleeve always maintains a uniform posture during work, avoiding the edging from sliding out of the chamfer due to tilting, and eliminating the quality risk of damaging the oil seal.

Description

Technical Field

[0001] The present application relates to the field of oil seal introduction, and in particular, to an oil seal introduction tooling. Background Art

[0002] In the engine manufacturing industry, the rear end of the crankshaft on the engine needs to be sealed with an oil seal to prevent lubricating oil from leaking from the rear end of the engine. The materials used to make oil seals are different, and one type of oil seal that is increasingly used has improved wrapping, wear resistance, and sealing properties.

[0003] In this regard, the Chinese patent application number is CN200820104345.1, which discloses a magnetic locating pin type oil seal introduction device. Under the action of magnetic force, the oil seal introduction device is firmly attached to the rear end face of the crankshaft. In this way, the crankshaft rear oil seal can be smoothly assembled on the crankshaft through the guidance of the conical guide circle and cylindrical guide circle of the introduction sleeve. However, the oil seal is pre-installed on the gear chamber or the flywheel housing, and an oil seal introduction sleeve is required to introduce the oil seal into the crankshaft. The introduction sleeve cannot fully wrap the chamfer of the crankshaft end face, forming a wide groove. There is a quality risk that the groove will scratch the lip of the oil seal. When installing parts, it is necessary to hang the parts on the guide rod first, align the oil seal pre-installed on the parts with the introduction sleeve, and then switch the action of lifting the parts to pushing them in. There is a gap between the guide hole and the guide rod, and the parts will inevitably fall slightly. There will also be a slight shake during the pushing process. The magnet suction of the introduction sleeve is insufficient, and these shakes will cause the introduction sleeve to tilt, the edge will slide out of the chamfer, and the wide groove will be wider, which will cause greater damage to the oil seal. Summary of the invention

[0004] In order to overcome the existing deficiencies, an embodiment of the present application provides an oil seal introduction tooling, which can solve the problem that the above-mentioned oil seal introduction sleeve cannot fully cover the crankshaft end face chamfer and is prone to tilting during operation.

[0005] The technical solution adopted by the embodiment of the present application to solve its technical problem is: an oil seal introduction tooling, including an oil seal introduction component and a handle component.

[0006] The oil seal introduction component includes an introduction sleeve, a positioning pin and a magnet block. The large end of the introduction sleeve is provided with a clearance groove. The large end of the introduction sleeve is located inside the clearance groove and is respectively provided with a first circular hole and a second circular hole. The magnet block is fixed inside the first circular hole, and the positioning pin is fixed inside the second circular hole. The large end of the introduction sleeve is located outside the clearance groove and is also provided with a rounded corner; the handle assembly includes a handle and a first threaded rod, one end of the handle is fixed to one end of the first threaded rod, and the other end of the first threaded rod is detachably fixed to the small end of the introduction sleeve, and a locking nut is provided on the outer threaded sleeve of the first threaded rod.

[0007] In a specific embodiment, a first threaded groove is provided at the small end of the insertion sleeve, and one end of the first threaded rod is screwed and arranged inside the first threaded groove.

[0008] In a specific embodiment, the handle assembly further includes a suspension member, and the suspension member is detachably connected to the end of the handle away from the first threaded rod.

[0009] In a specific embodiment, the suspension member includes a second threaded rod, a connecting ring, a connecting rope and a hanging ring. The second threaded rod is detachably connected to the end of the handle away from the first threaded rod. The connecting ring is fixed to the other end of the second threaded rod, and both ends of the connecting rope are respectively fixed to the connecting ring and the hanging ring.

[0010] In a specific embodiment, the suspension member further includes a fixing block. One side of the fixing block is fixed to the other end of the second threaded rod, and the other side of the fixing block is fixed to the connecting ring.

[0011] In a specific embodiment, a second threaded groove is provided at the end of the handle away from the first threaded rod, and the second threaded rod is screwed and arranged inside the second threaded groove.

[0012] In a specific embodiment, an anti-slip rubber sleeve is fixedly sleeved on the outer side of the handle.

[0013] In a specific embodiment, an external thread is provided at the bottom end of the positioning pin, and an internal thread matching the external thread is provided inside the second round hole.

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

[0015] 1. Through the settings of the relief groove and the fillet, the fillet at the root of the edge wrapping is prevented from interfering with the chamfered edge of the crankshaft, ensuring that the edge wrapping fully fits and wraps the crankshaft chamfer. By adding a positioning pin inserted into the screw hole of the crankshaft, the insertion sleeve always maintains a unified posture during work, avoiding the edge wrapping slipping out of the chamfer due to tilting, and eliminating the quality hidden danger of damaging the oil seal.

[0016] 2. Through the setting of the locknut, there is a certain pre-pressure on the first threaded rod, which can further improve the connection between the first threaded rod and the insertion sleeve, preventing loosening and affecting the insertion of the oil seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an oil seal insertion tooling provided by the embodiment of the present application;

[0018] Figure 2 It is a schematic structural diagram of an oil seal insertion assembly provided by the embodiment of the present application;

[0019] Figure 3Schematic structural diagram of the handle assembly provided by the embodiment of the present application;

[0020] Figure 4 Schematic structural diagram of the suspension member provided by the embodiment of the present application.

[0021] In the figure: 10 - oil seal introduction component; 110 - introduction sleeve; 111 - first round hole; 112 - second round hole; 113 - relief groove; 114 - fillet; 115 - first thread groove; 120 - positioning pin; 130 - magnet block; 20 - handle assembly; 210 - handle; 220 - first threaded rod; 230 - locknut; 240 - suspension member; 241 - second threaded rod; 242 - connecting ring; 243 - connecting rope; 244 - hanging ring; 245 - fixing block; 250 - anti-slip rubber sleeve. Specific embodiments

[0022] The technical solution in the embodiment of the present application is to solve the problems that the above-mentioned oil seal introduction sleeve 110 cannot fully wrap the chamfer of the crankshaft end face and is prone to tilt during operation. The general idea is as follows:

[0023] Please refer to Figures 1-4 , an oil seal introduction tooling, including an oil seal introduction component 10 and a handle assembly 20.

[0024] Among them, through the introduction sleeve 110, the positioning pin 120 and the relief groove 113, the oil seal is introduced into the crankshaft end face, and the handle assembly 20 is used to hold the introduction sleeve 110 for convenient operation.

[0025] Please refer to Figure 1 and Figure 2, the oil seal introduction assembly 10 includes an introduction sleeve 110, a positioning pin 120, and a magnet block 130. A relief groove 113 is provided at the large end of the introduction sleeve 110. A first round hole 111 and a second round hole 112 are respectively provided in the part of the large end of the introduction sleeve 110 located within the relief groove 113. The magnet block 130 is fixed inside the first round hole 111. Specifically, the magnet block 130 cannot protrude from the end face of the introduction sleeve 110. The positioning pin 120 is fixed inside the second round hole 112. A fillet 114 is also provided on the outside of the large end of the introduction sleeve 110 located outside the relief groove 113. Among them, each part needs to be cleaned and then assembled. Grasp the introduction sleeve 110, align the positioning pin 120 with the screw hole at the rear end of the crankshaft and insert it for positioning until the end face of the relief groove 113 is flush with the rear end face and the external chamfer of the crankshaft. Under the action of the magnet block 130, the introduction sleeve 110 is stably attracted to the rear end face of the crankshaft, so that the oil seal can be successfully assembled onto the crankshaft. Through the settings of the relief groove 113 and the fillet 114, it is avoided that the fillet 114 at the root of the edge wrapping interferes with the chamfered edge of the crankshaft, ensuring that the edge wrapping fully fits and wraps the crankshaft chamfer. By adding the positioning pin 120 inserted into the screw hole of the crankshaft, the introduction sleeve 110 always maintains a unified posture during operation, avoiding the edge wrapping slipping out of the chamfer due to tilting and eliminating the quality hidden danger of damaging the oil seal.

[0026] The bottom end of the positioning pin 120 is provided with an external thread, and an internal thread matching the external thread is provided inside the second round hole 112. Through the screw connection setting of the positioning pin 120 and the introduction sleeve 110, it is convenient to replace the positioning pin 120.

[0027] Please refer to Figure 1 , Figure 3 and Figure 4 , the handle assembly 20 includes a handle 210 and a first threaded rod 220. One end of the handle 210 is fixed to one end of the first threaded rod 220, and the other end of the first threaded rod 220 is detachably fixed to the small end of the introduction sleeve 110. A locknut 230 is screwed and sleeved on the outside of the first threaded rod 220. Among them, before introducing the oil seal, the first threaded rod 220 is pre-screwed into the first threaded groove 115, and then the locknut 230 is continuously rotated until the locknut 230 is in close contact with the small end of the introduction sleeve 110, and then one hand grasps the handle 210 to introduce the oil seal. Through the setting of the locknut 230, there is a certain pre-pressure on the first threaded rod 220, which can further improve the connection between the first threaded rod 220 and the introduction sleeve 110 and prevent loosening, affecting the introduction of the oil seal.

[0028] The small end of the introduction sleeve 110 is provided with a first threaded groove 115, and one end of the first threaded rod 220 is screwed and arranged inside the first threaded groove 115. When the first threaded rod 220 becomes loose, it can be tightened.

[0029] The handle assembly 20 further includes a suspension member 240, and the suspension member 240 is detachably connected to one end of the handle 210 away from the first threaded rod 220. Through the detachable connection between the suspension member 240 and the handle 210, when importing the oil seal, the suspension member 240 can be removed to avoid affecting the import of the oil seal.

[0030] The suspension member 240 includes a second threaded rod 241, a connecting ring 242, a connecting rope 243 and a hanging ring 244. The second threaded rod 241 is detachably connected to one end of the handle 210 away from the first threaded rod 220, the connecting ring 242 is fixed to the other end of the second threaded rod 241, and both ends of the connecting rope 243 are fixed to the connecting ring 242 and the hanging ring 244 respectively.

[0031] Furthermore, the suspension member 240 further includes a fixing block 245. One side of the fixing block 245 is fixed to the other end of the second threaded rod 241, and the other side of the fixing block 245 is fixed to the connecting ring 242. Wherein, after the import of the oil seal is completed, the whole device is hung through the hanging ring 244 for storage.

[0032] A second threaded groove is provided at one end of the handle 210 away from the first threaded rod 220, and the second threaded rod 241 is screwed into the second threaded groove. When importing the oil seal, the second threaded rod 241 is screwed out of the second threaded groove for importing the oil seal. When hanging is required after the import of the oil seal is completed, the second threaded rod 241 is screwed back into the second threaded groove to enable hanging.

[0033] An anti-slip rubber sleeve 250 is also fixedly sleeved on the outside of the handle 210. Specifically, the anti-slip rubber sleeve 250 is made of rubber material with good anti-slip performance. Therein, it can improve the friction force of the hand grasping the handle 210 and prevent slipping.

[0034] When this application is in use: all parts need to be cleaned and then assembled. Grasp the guiding sleeve 110, align the positioning pin 120 with the screw hole at the rear end of the crankshaft and insert it for positioning until the end face of the relief groove 113 is flush with the rear end face and the external chamfer of the crankshaft. Under the action of the magnet block 130, the guiding sleeve 110 is firmly attracted to the rear end face of the crankshaft, so that the oil seal can be smoothly assembled onto the crankshaft. Through the settings of the relief groove 113 and the fillet 114, the fillet 114 at the root of the edge wrapping is prevented from interfering with the chamfered edge of the crankshaft, ensuring that the edge wrapping fully fits and wraps the crankshaft chamfer. By adding the positioning pin 120 inserted into the screw hole of the crankshaft, the guiding sleeve 110 always maintains a unified posture during operation, avoiding the edge wrapping slipping out of the chamfer due to inclination and eliminating the quality hidden danger of damaging the oil seal. Before the oil seal is inserted, the first threaded rod 220 is pre-screwed into the first threaded groove 115, and then the locknut 230 is continuously rotated until the locknut 230 is in close contact with the small end of the guiding sleeve 110. Then, hold the handle 210 with one hand to insert the oil seal. Through the setting of the locknut 230, there is a certain pre-pressure on the first threaded rod 220, which can further improve the connection between the first threaded rod 220 and the guiding sleeve 110 and prevent loosening, affecting the insertion of the oil seal.

[0035] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An oil seal introduction tooling, characterized in that, it includes an oil seal introduction assembly, including an introduction sleeve, a positioning pin and a magnet block. A relief groove is provided at the large end of the introduction sleeve. A first round hole and a second round hole are respectively provided in the part of the large end of the introduction sleeve located in the relief groove. The magnet block is fixed inside the first round hole, and the positioning pin is fixed inside the second round hole. A fillet is also provided on the outside of the large end of the introduction sleeve located outside the relief groove; a handle assembly, including a handle and a first threaded rod. One end of the handle is fixed to one end of the first threaded rod, and the other end of the first threaded rod is detachably fixed to the small end of the introduction sleeve. A locknut is screwed onto the outside of the first threaded rod; wherein, a first thread groove is provided at the small end of the introduction sleeve, and one end of the first threaded rod is screwed into the first thread groove; the handle assembly further includes a suspension member, and the suspension member is detachably connected to the end of the handle away from the first threaded rod; the suspension member includes a second threaded rod, a connecting ring, a connecting rope and a hanging ring. The second threaded rod is detachably connected to the end of the handle away from the first threaded rod. The connecting ring is fixed to the other end of the second threaded rod. Both ends of the connecting rope are respectively fixed to the connecting ring and the hanging ring; the bottom end of the positioning pin is provided with an external thread, and an internal thread matching the external thread is provided inside the second round hole.

2. The oil seal introduction tooling according to claim 1, characterized in that, the suspension member further includes a fixing block. One side of the fixing block is fixed to the other end of the second threaded rod, and the other side of the fixing block is fixed to the connecting ring.

3. The oil seal introduction tooling according to claim 2, characterized in that, a second thread groove is provided at the end of the handle away from the first threaded rod, and the second threaded rod is screwed into the second thread groove.

4. The oil seal introduction tooling according to claim 3, characterized in that, a non-slip rubber sleeve is also fixedly sleeved on the outside of the handle.

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