Oil gas seal dismounting tool

Abstract

The invention discloses an oil gas seal dismounting tool which comprises a positioning base, the positioning base is arranged on a press platform and comprises an inner positioning seat and an outer positioning seat which are coaxially arranged, a rotary sealing device is coaxially arranged above the outer positioning seat, a fixing sleeve is arranged on the inner side of the rotary sealing device, and the inner side of the rotary sealing device is provided with a rotating shaft. The fixing sleeve is coaxially placed above the inner positioning seat, a plurality of guide holes are formed in the side wall of the fixing sleeve in the radial direction, ball shafts are arranged in the guide holes in a sliding mode, the inner side of the fixing sleeve is coaxially connected with a lower pressing rod in a threaded mode, and the bottom of the lower pressing rod is in a conical shape and abuts against the ball shafts. And the lower pressing rod extrudes the ball shaft to transversely move in the descending process. The oil-gas seal dismounting tool can effectively dismount the damaged oil-gas seal without damaging the oil-gas seal on the other side, can effectively reduce the cost loss caused by the damage of the oil-gas seal, and is simple in structure and convenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas seal tightness testing, and particularly relates to a kind of oil and gas seal dismounting tool. BACKGROUND

[0002] A certain type of wheel assembly is composed of planetary gear support assembly, wheel hub, steering knuckle assembly, rotary sealing device and other parts. It is required to carry out sealing bench test before the assembly is shipped. The sealing test once through qualified rate is about 95%, there is a lot of rework, when the wheel hub assembly is taken out, the oil and gas seal lip will pass through the spline part of the half shaft sleeve, because the gap between the oil and gas seal lip and the spline part of the half shaft sleeve is less than 3mm, the oil and gas seal is easy to be scratched by the spline of the half shaft sleeve during the withdrawal process of the wheel hub assembly, causing the oil and gas seal to be damaged and scrapped. The oil and gas seal in the rotary sealing device includes two groups of upper and lower, which is easy to be damaged during dismounting, and the damage probability is as high as 40%. At the same time, the unit price of the oil and gas seal is high, and the cost loss is very large.

[0003] Especially, if the lower oil seal in the rotary sealing device is damaged, basically two oil seals are scrapped at the same time, because the interval between the two oil and gas seals in the rotary sealing device is less than 10mm, when the lower oil seal is dismounted and damaged, the upper intact oil seal will also be damaged, so two oil seals are scrapped together. SUMMARY

[0004] In view of the above technical problems, the present application provides an oil and gas seal dismounting tool, which can effectively dismount and damage the oil and gas seal without damaging the other side oil and gas seal, can effectively reduce the cost loss caused by the damage of the oil and gas seal, and has simple structure and convenient operation.

[0005] An oil and gas seal dismounting tool, comprising a positioning base, the positioning base is placed on a press platform, comprising an inner positioning seat and an outer positioning seat arranged coaxially, a rotary sealing device is placed coaxially above the outer positioning seat, a fixing sleeve is arranged coaxially inside the rotary sealing device, a plurality of guide holes are formed on the side wall of the fixing sleeve in the radial direction, a ball shaft is slidably arranged in the guide hole, a pressing rod is threadedly connected coaxially to the inner side of the fixing sleeve, the bottom of the pressing rod is conical and in contact with the ball shaft, and the ball shaft is transversely pressed during the downward movement of the pressing rod.

[0006] As a preferred technical solution of the above, the ball shaft comprises a straight rod segment and a hemispherical segment, the straight rod segment is slidably arranged in the guide hole, and the hemispherical segment is in contact with the conical surface of the bottom of the pressing rod.

[0007] As a preferred technical solution of the above, the guide holes are uniformly arranged along the axial direction of the fixing sleeve.

[0008] As a preferred embodiment of the above technical solution, the outer positioning seat has a step on its inner side for positioning the rotary sealing device.

[0009] As a preferred embodiment of the above technical solution, a protective cover is provided on the top of the pressure rod.

[0010] As a preferred embodiment of the above technical solution, the inner positioning seat and the inner diameter of the fixed cylinder are the same.

[0011] The beneficial effects of this invention are as follows:

[0012] The oil and gas seal disassembly tool can effectively remove a damaged oil and gas seal without damaging the other side, thus effectively reducing the cost loss caused by oil and gas seal damage. It has a simple structure and is easy to operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a diagram showing the layout of the ball bearing on the fixed sleeve.

[0015] The attached figures are labeled as follows: 1-inner positioning seat, 2-outer positioning seat, 3-rotary sealing device, 4-fixed sleeve, 5-guide hole, 6-ball shaft, 601-straight rod section, 602-hemispherical section, 7-downward pressure rod, 8-step, 9-protective cover, 10-oil and gas sealing lip. Detailed Implementation

[0016] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] like Figure 1 , Figure 2 The illustrated oil and gas seal disassembly fixture includes a positioning base placed on a press platform. It comprises an inner positioning seat 1 and an outer positioning seat 2 coaxially arranged. A rotary sealing device 3 is coaxially positioned above the outer positioning seat 2. A fixing sleeve 4 is provided inside the rotary sealing device 3 and coaxially positioned above the inner positioning seat 1. Multiple guide holes 5 are radially formed on the side wall of the fixing sleeve 4. A ball shaft 6 is slidably disposed within the guide holes 5. A downward pressure rod 7 is coaxially threaded to the inner side of the fixing sleeve 4. The bottom of the downward pressure rod 7 is conical and abuts against the ball shaft 6. During downward movement, the downward pressure rod 7 compresses the ball shaft 6, causing it to move laterally.

[0018] In the embodiment, the ball shaft 6 comprises a straight rod segment 601 and a hemispherical segment 602, the straight rod segment 601 is slidingly arranged in the guide hole 5, and the hemispherical segment 602 is in abutment with the conical surface at the bottom of the pressing rod 7.

[0019] In the embodiment, the guide holes 5 are uniformly arranged along the axial direction of the fixing sleeve 4.

[0020] In the embodiment, a step 8 for positioning the rotary sealing device 3 is arranged on the inner side of the outer positioning seat 2.

[0021] In the embodiment, a protective cover 9 is arranged on the top of the pressing rod 7.

[0022] In the embodiment, the inner diameter of the inner positioning seat 1 is the same as that of the fixing sleeve 4.

[0023] The use method of the tool is as follows:

[0024] 1. The positioning base is placed on the platform of a pressing machine, and the rotary sealing device 3 is placed on the outer positioning seat 2.

[0025] 2. The ball shaft 6 is inserted into the guide hole 5 of the fixing sleeve 4, the fixing sleeve 4 is inserted through the oil and gas sealing lip 10, and is placed on the inner positioning seat 1, and attention should be paid to not damaging the oil and gas sealing lip 10 when the fixing sleeve 4 is inserted through the oil and gas sealing lip 10.

[0026] 3. The pressing rod 7 is screwed into the thread of the fixing sleeve 4, and is screwed into place, at this time, the pressing rod 7 pushes out the straight rod segment 601 of the ball shaft 6, the ball shaft 6 is in an open state, and the straight rod segment 601 of the ball shaft 6 is just between the upper and lower oil and gas seals.

[0027] 4. The pressing rod 7 is pressed by the pressing machine, the ball shaft 6 presses the lower oil and gas seal, and the removal of the damaged lower oil and gas seal is completed, and the upper oil and gas seal is not damaged.

[0028] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and the present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oil and gas seal dismounting tool, characterized by: The positioning base is arranged on the platform of a press machine, and comprises an inner positioning seat and an outer positioning seat arranged coaxially.

2. The oil and gas seal dismounting tool according to claim 1, characterized in that: The rotating sealing device is arranged coaxially above the outer positioning seat.

3. The oil and gas seal dismounting tool according to claim 1, characterized in that: A fixing sleeve is arranged coaxially above the inner positioning seat.

4. The oil and gas seal dismounting tool of claim 1, wherein: A plurality of guide holes are formed in the side wall of the fixing sleeve in the radial direction.

5. The oil and gas seal dismounting tool according to claim 1, characterized in that: A ball shaft is slidably arranged in the guide hole.

6. The oil and gas disassembly tool of claim 1, wherein: A lower pressing rod is threadedly connected to the inner side of the fixing sleeve coaxially. The bottom of the lower pressing rod is tapered and abuts against the ball shaft. The lower pressing rod extrudes the ball shaft during downward movement. The ball shaft comprises a straight rod segment and a hemispherical segment. The straight rod segment is slidably arranged in the guide hole. The hemispherical segment abuts against the tapered surface of the bottom of the lower pressing rod. The guide holes are uniformly arranged axially along the fixing sleeve. A step is arranged on the inner side of the outer positioning seat for positioning the rotating sealing device. A protective cover is arranged on the top of the lower pressing rod. The inner diameter of the inner positioning seat is the same as that of the fixing sleeve.

Images