Oil seal pressing device

Abstract

The utility model discloses an oil seal pressing device, which relates to the technical field of oil seals and comprises a sleeve, a fixing piece and a connecting piece used for being connected with the output end of an engine crankshaft, and the sleeve and the fixing piece are sleeved on the connecting piece in a sliding mode. The device further comprises a two-way screw, and the two-way screw is in threaded connection with the sleeve and the fixing piece so that the fixing piece can move relatively in the sleeve through rotation of the two-way screw. The sleeve and the fixing piece are arranged, the fixing piece is connected with the sleeve through the two-way screw rod, and meanwhile the fixing piece is fixedly connected to the output end of the engine crankshaft through the connecting piece, so that when the two-way screw rod rotates, the two-way screw rod rotates through relative movement of the fixing piece and the sleeve; by means of the technical scheme, the press fit stress of the oil seal piece is even, the press fit deformation problem of the oil seal piece is effectively avoided, and the press fit efficiency of the oil seal piece for engine crankshaft maintenance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seals, in particular to an oil seal pressing device. Background Art

[0002] In order to prevent oil leakage at the output end of the engine crankshaft, it is generally necessary to install an oil seal at the output end. Since the oil seal is generally replaced by smashing it in with brute force during maintenance, this method is prone to deformation of the oil seal due to uneven force, which in turn easily causes oil leakage. Therefore, the present application proposes an oil seal pressing device that can evenly apply force. Utility Model Content

[0003] The purpose of the utility model is to propose an oil seal pressing device to solve the above-mentioned problems in view of the shortcomings of the above-mentioned technology.

[0004] The utility model provides an oil seal pressing device, comprising a sleeve and a fixing piece and a connecting piece used for connecting with the output end of the engine crankshaft, wherein the sleeve and the fixing piece are slidably sleeved on the connecting piece; the utility model also comprises a bidirectional screw, which is threadedly connected with the sleeve and the fixing piece respectively, so that the fixing piece can perform relative movement in the sleeve through the rotation of the bidirectional screw; the connecting piece comprises a round rod for limiting the fixing piece.

[0005] Preferably, the round rod is slidably connected to the first through hole on the sleeve, and the connecting member further comprises a threaded rod, which is connected to the end of the round rod and passes through the second through hole on the fixing member and is threadedly connected to the output end of the engine crankshaft. The diameter of the first through hole is greater than the diameter of the second through hole.

[0006] Preferably, a first threaded hole is provided on the sleeve, a second threaded hole is provided on the fixing piece, and the diameter of the first threaded hole is larger than that of the second threaded hole. Threads with opposite thread directions are provided at both ends of the bidirectional screw, so that the bidirectional screw can rotate to make the fixing piece move relatively in the sleeve. Rotating heads for rotation are provided at the ends of the bidirectional screw and the connecting piece. A top connection protrusion is provided on one side of the fixing piece.

[0007] Compared with the prior art, it has the following beneficial effects:

[0008] By setting a sleeve and a fixing part, and relying on a bidirectional screw to connect the fixing part with the sleeve, at the same time, the fixing part is fixedly connected to the output end of the engine crankshaft through a connecting part, so that when the bidirectional screw rotates, relying on the relative movement of the fixing part and the sleeve, the sleeve can slide on the shaft on the output end of the crankshaft to push the oil seal to the end so that it is close to its end to achieve pressing. By adopting the above technical solution, the pressing force of the oil seal is uniform, which effectively avoids the problem of pressing deformation of the oil seal, and greatly improves the pressing efficiency of the oil seal in engine crankshaft maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 This is an exploded view of an oil seal pressing device of the utility model;

[0011] Figure 2 The utility model is an exploded view of an oil seal pressing device.

[0012] In the figure, 1-sleeve; 11-first through hole; 12-first threaded hole; 2-fixing piece; 21-second through hole; 22-second threaded hole; 23-top protrusion; 3-bidirectional screw; 4-connecting piece; 41-round rod; 42-threaded rod; 5-rotating head. DETAILED DESCRIPTION

[0013] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention are described in detail with reference to the drawings as follows:

[0014] Example:

[0015] like Figure 1 and Figure 2 As shown, the utility model provides an oil seal pressing device, including a sleeve 1 and a fixing member 2 and a connecting member 4 for connecting to the output end of the engine crankshaft, wherein the sleeve 1 and the fixing member 2 are slidably sleeved on the connecting member 4; and further including a bidirectional screw 3, which is threadedly connected to the sleeve 1 and the fixing member 2 respectively, so that the fixing member 2 can move relatively in the sleeve 1 through the rotation of the bidirectional screw 3; the connecting member 4 includes a round rod 41 for limiting the fixing member 2. The present application uses the connecting member 4 to fix the fixing member 2 to the output end of the engine crankshaft, and relies on the bidirectional screw 3 to connect the fixing member 2 to the sleeve 1, so that when the bidirectional screw 3 rotates, the sleeve 1 can slide on the outer wall of the shaft on the output end of the crankshaft to push the oil seal to the end so that it is close to its end to achieve pressing.

[0016] See also Figure 1 The round rod 41 is slidably connected to the first through hole 11 on the sleeve 1, and the connecting member 4 also includes a threaded rod 42, which is connected to the end of the round rod 41, and the threaded rod 42 passes through the second through hole 21 on the fixing member 2 and is threadedly connected to the output end of the engine crankshaft.

[0017] See also Figure 1 and Figure 2The diameter of the first through hole 11 is greater than the diameter of the second through hole 21, so that the round rod 41 can pass through the first round hole to abut against the second round hole. When the threaded rod 42 is threadedly connected to the crankshaft output end, the fixing member 2 can be fixed and limited on the crankshaft output end by the end of the round rod 41, so that when the bidirectional screw 3 rotates, due to the fixation of the fixing member 2, the sleeve 1 can slide on the outer wall of the crankshaft output end.

[0018] See also Figure 1 A first threaded hole 12 is provided on the sleeve 1, and a second threaded hole 22 is provided on the fixing member 2. The diameter of the first threaded hole 12 is larger than that of the second threaded hole 22, so that the front end thread of the bidirectional screw 3 passes through the first threaded hole 12 to be threadedly connected with the second threaded hole 22, so that the rear end thread of the bidirectional screw 3 can be threadedly connected with the first threaded hole 12.

[0019] See also Figure 1 , threads with opposite thread directions are arranged at both ends of the bidirectional screw 3, so that the bidirectional screw 3 can make the fixing member 2 move relatively in the sleeve 1 by rotating.

[0020] See also Figure 1 and Figure 2 The ends of the bidirectional screw 3 and the connecting piece 4 are provided with a rotating head 5 for rotation, so that the bidirectional screw 3 and the connecting piece 4 can be rotated manually or with a tool by providing the rotating head 5; further, the bidirectional screw 3 can also be rotated by providing a rotating handle at the end of the bidirectional screw 3.

[0021] See also Figure 2 A top-connecting protrusion 23 is provided on one side of the fixing member 2 so as to top-connect the end surface of the output end of the engine crankshaft through the top-connecting protrusion 23.

[0022] The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention belong to the protection scope of the present technical solution.

Claims

1. An oil seal pressing device, characterized in that: The invention comprises a sleeve (1), a fixing member (2) and a connecting member (4) for the output end of the engine crankshaft, wherein the sleeve (1) and the fixing member (2) are slidably sleeved on the connecting member (4); the invention also comprises a bidirectional screw (3), wherein the bidirectional screw (3) is threadedly connected to the sleeve (1) and the fixing member (2) respectively, so that the fixing member (2) can move relatively in the sleeve (1) through the rotation of the bidirectional screw (3); and the connecting member (4) comprises a round rod (41) for limiting the fixing member (2).

2. The oil seal pressing device according to claim 1, characterized in that: The round rod (41) is slidably connected to the first through hole (11) on the sleeve (1), and the connecting member (4) further comprises a threaded rod (42), wherein the threaded rod (42) is connected to the end of the round rod (41), and the threaded rod (42) passes through the second through hole (21) on the fixing member (2) and is threadedly connected to the output end of the engine crankshaft.

3. The oil seal pressing device according to claim 2, characterized in that: The diameter of the first through hole (11) is greater than the diameter of the second through hole (21).

4. The oil seal pressing device according to claim 1, characterized in that: The sleeve (1) is provided with a first threaded hole (12), the fixing member (2) is provided with a second threaded hole (22), and the diameter of the first threaded hole (12) is larger than that of the second threaded hole (22).

5. The oil seal pressing device according to claim 4, characterized in that: The two ends of the bidirectional screw (3) are provided with threads with opposite thread directions, so that the bidirectional screw (3) can cause the fixing member (2) to move relatively in the sleeve (1) by rotating.

6. The oil seal pressing device according to claim 1, characterized in that: The ends of the bidirectional screw (3) and the connecting piece (4) are provided with rotating heads (5) for rotation.

7. The oil seal pressing device according to claim 1, characterized in that: A top connection protrusion (23) is provided on one side of the fixing member (2).

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