New energy automobile gearbox framework oil seal dismounting tool

Abstract

The utility model discloses a disassembling tool for a framework oil seal of a gearbox of a new energy automobile. The disassembling tool comprises a supporting seat plate, a self-tapping screw and a hand-screwing bolt. The supporting seat plate is in a long-strip plate shape, threaded holes are symmetrically formed in the two ends of the supporting seat plate, and a plurality of screw passing holes are formed in the center of the supporting seat plate and are flush with the end face of the oil seal body. The two hand screwing bolts are screwed in the threaded holes and can reversely push the supporting seat plate after making contact with the surface of the shell. The multiple self-tapping screws are annularly and evenly distributed and can be screwed into the end face of the oil seal body. The lower end of the self-tapping screw 2 is a pointed end and can be drilled into a framework of the framework oil seal, and therefore the effect of connecting and pulling the oil seal is achieved. The disassembling tool for the framework oil seal of the gearbox of the new energy automobile is convenient to store and assemble, stress points are added on the framework oil seal through a simple structure under the condition that a gearbox shell and a rotating shaft are not damaged, and the disassembling and assembling efficiency of the framework oil seal is improved.

Description

Technical Field

[0001] The utility model belongs to the field of disassembly and assembly tools, and specifically relates to a new energy vehicle gearbox skeleton oil seal disassembly tool. Background Art

[0002] There is an oil film controlled by the oil seal edge between the oil seal and the shaft. This oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film just forms a crescent surface at the contact end of the oil film and the air, preventing leakage of the working medium, thereby achieving sealing of the rotating shaft.

[0003] The skeleton oil seal can maintain its shape and tension. It is installed between the parts that need to be lubricated and the output parts in the transmission parts of the new energy vehicle gearbox to limit the leakage of lubricating oil in the bearing and prevent mud, dust, water vapor, etc. from invading the bearing from the outside.

[0004] The sealing ability of the oil seal depends on the thickness of the oil film on the sealing surface. If the thickness is too large, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear of the oil seal and the shaft; if there is no oil film between the sealing lip and the shaft, it is easy to cause heat and wear.

[0005] At present, when performing maintenance or debugging of the gearbox, the skeleton oil seal needs to be removed from the outside of the gearbox. Currently, a combination of multiple conventional tools is used to perform the operation, but it is easy to damage the rotating shaft and the housing oil seal installation hole, and the removal efficiency is also low. Therefore, it is urgent to design a skeleton oil seal removal tool suitable for new energy vehicle gearboxes. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a new energy vehicle gearbox skeleton oil seal removal tool, which is simple and easy to use and avoids damage to the shaft and the housing when the skeleton oil seal is removed from the gearbox housing.

[0007] The technical solution of the utility model is: the utility model provides a new energy vehicle gearbox skeleton oil seal removal tool, including a support seat plate, a self-tapping screw, and a hand-tightening bolt.

[0008] The support seat plate is in the shape of a long strip, with threaded holes symmetrically arranged at both ends, and a plurality of screw holes arranged in the center of the support seat plate, which are aligned with the end surface of the oil seal body.

[0009] There are two hand-tightening bolts, which are screwed into the threaded holes and can push the support base plate in the opposite direction after contacting the shell surface.

[0010] There are multiple self-tapping screws, which are evenly arranged in a ring shape and can be screwed into the end surface of the oil seal body. The lower end of the self-tapping screw 2 is a pointed head, which can be drilled into the skeleton of the skeleton oil seal, thereby achieving the effect of connecting and pulling the oil seal.

[0011] According to a disassembly tool in another embodiment of the utility model or any of the aforementioned embodiments, a avoidance hole is provided at the center of the support seat plate, and the avoidance hole is a through hole, and the avoidance hole can pass through a longer rotating shaft to avoid affecting the operation.

[0012] According to a disassembly tool according to another embodiment of the utility model or any of the aforementioned embodiments, a plum blossom-shaped handle is provided at the rear end of the hand-tightening bolt, so as to facilitate directly twisting the bolt by hand.

[0013] According to a disassembly tool in another embodiment of the utility model or any of the aforementioned embodiments, the center of the support seat plate is annular, and the support seat plate is a structure that is convex in the middle and narrow on both sides.

[0014] According to a disassembly tool in another embodiment of the utility model or any of the aforementioned embodiments, there are four self-tapping screws and four corresponding screw passing holes.

[0015] According to a disassembly tool according to another embodiment of the utility model or any of the aforementioned embodiments, wherein the screw passing hole is a countersunk hole.

[0016] Beneficial effects of the utility model:

[0017] The utility model can be used for the new energy vehicle gearbox skeleton oil seal disassembly tool, which is easy to store and assemble. Through a simple structure, stress points are added to the skeleton oil seal without damaging the gearbox housing and the rotating shaft, thereby improving the efficiency of disassembly and assembly of the skeleton oil seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the new energy vehicle gearbox skeleton oil seal removal tool described in the utility model when working on the housing;

[0019] Figure 2 It is a cross-sectional schematic diagram of the new energy vehicle gearbox skeleton oil seal removal tool described in the utility model when working on the housing;

[0020] Figure 3 for Figure 2 An enlarged schematic diagram of part A;

[0021] Figure 4 It is a three-dimensional schematic diagram of the new energy vehicle gearbox skeleton oil seal removal tool described in the utility model;

[0022] Figure 5 It is an enlarged three-dimensional schematic diagram of the support base plate of the utility model;

[0023] In the figure: 1, support plate; 101, avoidance hole; 102, screw through hole; 103, threaded hole;

[0024] 2. Self-tapping screws;

[0025] 3. Tighten the bolts by hand;

[0026] 4. Shell;

[0027] 5. Oil seal body;

[0028] 6. Rotate the shaft. DETAILED DESCRIPTION

[0029] The specific contents of the utility model are described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 4 As shown, a new energy vehicle gearbox skeleton oil seal removal tool includes a support seat plate 1, a self-tapping screw 2, and a hand-tightening bolt 3.

[0031] like Figure 5 As shown, the support seat plate 1 is in the shape of a long strip, with threaded holes 103 symmetrically arranged at both ends, and a plurality of screw through holes 102 arranged in the center of the support seat plate 1, aligned with the end surface of the oil seal body 5. The center of the support seat plate 1 is annular, and the support seat plate 1 is a structure that is convex in the middle and narrow on both sides.

[0032] like Figure 4 , 5 As shown, there are two hand-tightening bolts 3, which are screwed into the threaded holes 103 and can push the support base plate 1 in the opposite direction after contacting the surface of the housing 4. A plum blossom-shaped handle is provided at the rear end of the hand-tightening bolt 3, which is convenient for directly screwing the bolt by hand.

[0033] like Figure 2 , 3 As shown in 4, there are multiple self-tapping screws 2, which are evenly arranged in a ring and can be screwed into the end face of the oil seal body 5. The lower end of the self-tapping screw 22 is a pointed head, which can be drilled into the skeleton of the skeleton oil seal, so as to achieve the effect of connecting and pulling the oil seal. There are 4 self-tapping screws 2, and there are also 4 corresponding screw passing holes 102. The screw passing hole 102 is a countersunk hole with a beveled edge on the top to cooperate with the self-tapping screw 2. An avoidance hole 101 is set in the center of the support seat plate 1. The avoidance hole 101 is a through hole. The avoidance hole 101 can pass through the longer rotating shaft 6 to avoid affecting the operation.

[0034] The working principle of this utility model:

[0035] like Figure 1As shown, the utility model mainly pulls the oil seal by tapping a hole on the oil seal with a self-tapping screw 2, solving the problem of no force point when disassembling the oil seal. There is an avoidance hole 101 in the middle of the support base plate 1, which is used to avoid the rotating shaft 6. There are 4 screw passing holes 102 with large chamfers evenly distributed around the avoidance hole 101, which pass between the support base plate 1 and the self-tapping screw 2. There is a threaded hole 103 on each side of the support base plate 1, and the support base plate 1 and the hand-tightening bolt 3 are matched through the threaded hole 103.

[0036] The lower end of the self-tapping screw 2 is a pointed head, which can be drilled into the skeleton of the skeleton oil seal, thereby achieving the effect of connecting and pulling the oil seal. The upper end of the hand-tightening bolt 3 has a plum blossom handle, which is convenient for directly turning the bolt by hand. After the self-tapping screw 2 passes through the screw hole 102 of the support seat plate 1, it directly taps into the skeleton oil seal, solving the problem that the oil seal cannot be grasped by ordinary means. The hand-tightening bolt 3 cooperates with the threaded hole 103 on the support seat plate 1, and uses a principle similar to the top screw to lift the support seat plate 1 upward, thereby pulling out the oil seal, making the operation easier and faster.

[0037] like Figure 2 As shown, the support base plate 1 is inserted into the rotating shaft 6, and four self-tapping screws 2 pass through the screw holes 102 of the support base plate 1 and then tap into the skeleton oil seal. Two hand-tightening bolts 3 are respectively screwed into the threaded holes 103 of the support base plate 1 and hold the housing 4. Both hands simultaneously turn the hand-tightening bolts 3 clockwise to lift the support base plate 1 upward, and the support base plate 1 pulls the self-tapping screws 2 to bring out the skeleton oil seal. For different types of gearboxes, only different support base plates 1 need to be made to realize the disassembly of skeleton oil seals of different types, which can be widely used and has strong versatility.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. The technicians in this industry should understand that the above implementation is only to illustrate the technical concept and characteristics of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it, and it cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A new energy vehicle gearbox skeleton oil seal removal tool, characterized by: It comprises a support base plate (1), a self-tapping screw (2), and a hand-tightening bolt (3). The support base plate (1) is in the shape of a long strip, with threaded holes (103) symmetrically arranged at both ends, and a plurality of screw through holes (102) arranged at the center of the support base plate (1) aligned with the end surface of the oil seal body (5). There are two hand-tightening bolts (3) which are screwed into the threaded holes (103) and can push the support base plate (1) in the opposite direction after contacting the surface of the housing (4). There are a plurality of self-tapping screws (2) which are evenly arranged in a ring shape and can be screwed into the end surface of the oil seal body (5).

2. A new energy vehicle gearbox skeleton oil seal removal tool according to claim 1, characterized in that: The support seat plate (1) is provided with an avoidance hole (101) at the center thereof. The avoidance hole (101) is a through hole, and the avoidance hole (101) is capable of passing through a relatively long rotating shaft (6).

3. A new energy vehicle gearbox skeleton oil seal removal tool according to claim 1, characterized in that: A plum blossom-shaped handle is provided at the rear end of the hand-tightened bolt (3).

4. A new energy vehicle gearbox skeleton oil seal removal tool according to claim 1, characterized in that: The center of the support seat plate (1) is annular, and the support seat plate (1) is a structure that is convex in the middle and narrow on both sides.

5. A new energy vehicle gearbox skeleton oil seal removal tool according to claim 1, characterized in that: There are four self-tapping screws (2) and four corresponding screw through holes (102).

6. A new energy vehicle gearbox skeleton oil seal removal tool according to claim 1 or 5, characterized in that: The screw through hole (102) is a countersunk hole.

Images