One-time press-fitting device for end cover, bearing and oil seal of speed reducer

Abstract

The utility model relates to the technical field of transmissions, and discloses a one-time press fitting device for a speed reducer end cover, a bearing and an oil seal, which comprises a base and a liftable pressing seat arranged right above the base, a detachable speed reducer semi-finished product positioning seat is fixed on the base, and a detachable pressing head is fixed on the pressing seat; the pressing head comprises an oil seal pressing part and an end cover pressing part which are coaxially arranged, and the oil seal pressing part is arranged in the middle of the end cover pressing part in a protruding mode. The oil seal pressing part and the end cover pressing part are arranged on the pressing head, so that the bearing, the end cover and the bearing can be pressed in place at one time, and the assembly efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a transmission technical field, especially a kind of reducer end cover, bearing, oil seal one-time press fitting device. BACKGROUND

[0002] The assembly process of the end cover, bearing and oil seal of the existing reducer is generally that bearing is first pressed and fitted on turbine shaft, then end cover is pressed into the box of reducer, at the same time, bearing is inserted into end cover, and finally oil seal is installed between end cover and worm shaft. This assembly process is relatively complex, and the assembly efficiency is relatively low. SUMMARY

[0003] The utility model discloses a kind of reducer end cover, bearing, oil seal one-time press fitting device, by being provided with press oil seal part and press end cover part on pressure head, bearing, end cover, bearing can be once press fitted in place, and assembly efficiency can be effectively improved.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] A kind of reducer end cover, bearing, oil seal one-time press fitting device, including base and the pressure seat that can be lifted and set in the top of base, the base is fixed with the detachable reducer semi-finished product positioning seat, the pressure seat is fixed with the detachable pressure head;

[0006] The pressure head includes press oil seal part and press end cover part, which are coaxially arranged, and the press oil seal part is protrusely arranged in the middle of the press end cover part.

[0007] By the above technical scheme, the reducer semi-finished product is placed on the reducer semi-finished product positioning seat, which is used for centering and supporting the reducer semi-finished product.

[0008] Then, the bearing, end cover and oil seal are sequentially sleeved on the worm shaft of the reducer semi-finished product, and the positions of the three are manually adjusted.

[0009] Then, the pressure seat drives the pressure head to move downward, the press oil seal part of the pressure head first contacts the oil seal, and the oil seal is pressed into the end cover due to the relatively soft and deformable oil seal. The protruding height of the press oil seal part can control the depth of the oil seal pressed into the end cover.

[0010] Then, the press end cover part of the pressure head is pressed against the end cover, the bearing hole of the end cover is inserted into the outer ring of the bearing, and the inner ring of the bearing is gradually inserted into the worm shaft, thereby completing the one-time installation of the end cover, bearing and oil seal.

[0011] The utility model is further provided as follows: a clearance cavity with an open lower side is formed in the middle of the pressure head to avoid interference with the worm shaft during press fitting.

[0012] The utility model further sets up: the outer diameter of the oil seal part is less than the inner diameter of the shaft seal hole of the end cover, because the position deviation of the end cover and the oil seal is relatively large when it is placed for the first time, and the outer diameter of the oil seal part is relatively small, so the oil seal part can not be directly pressed on the end cover;

[0013] The outer diameter of the end cover part is greater than the outer diameter of the upper end outer wall of the shaft seal hole, and the end cover part can cover the upper end surface of the shaft seal hole during pressing, so that the upper end surface of the shaft seal hole can be prevented from being pressed.

[0014] The utility model further sets up: the reducer semi-finished product positioning seat is formed with a circular positioning counterbore with an upper opening, and the circular positioning counterbore is gap matched with the outer diameter of the positioning part of the reducer semi-finished product.

[0015] The circular positioning counterbore mainly positions the center of the reducer semi-finished product and supports the bottom.

[0016] The utility model further sets up: the pressure head and the reducer semi-finished product positioning seat are matched;

[0017] The pressure head and the reducer semi-finished product positioning seat have multiple sizes; multiple specifications are set up, so that the pressing work of the reducer of different specifications can be adapted.

[0018] The utility model further sets up: the middle part of the pressure head is formed with an upwardly protruding connecting mandrel, the connecting mandrel is inserted into the pressure seat, a locking screw is screwed on the pressure seat and tightly abuts against the outer wall of the connecting mandrel; when the locking screw is loosened, the connecting mandrel can be separated from the pressure seat, so that the installation and replacement of the pressure head can be facilitated;

[0019] The reducer semi-finished product positioning seat is connected with the base through a second screw, so that the replacement of the reducer semi-finished product positioning seat can be facilitated.

[0020] The utility model has the following advantages:

[0021] Compared with the prior art, the oil seal part and the end cover part are arranged on the pressure head, so that the bearing, the end cover and the bearing can be pressed and assembled in place at one time, and the assembly efficiency can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is a structural schematic diagram of the utility model;

[0023] Fig. 2 It is a schematic diagram before pressing of the utility model.

[0024] Reference signs: 10, base;

[0025] 20, pressure seat; 21, locking screw;

[0026] 30, reducer semi-finished product positioning seat; 31, second screw;

[0027] 40, pressing head; 401, oil seal pressing part; 402, end cover pressing part; 403, clearance cavity; 404, connecting mandrel;

[0028] 90, end cover; 901, shaft seal hole; 91, reducer semi-finished product; 911, positioning part; 912, turbine shaft; 92, bearing; 93, oil seal. DETAILED DESCRIPTION

[0029] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0030] The following references Figs. 1-2 The utility model is described as follows:

[0031] A reducer end cover, bearing and oil seal one-time pressing device, comprising a base 10 and a pressing seat 20 arranged above the base 10 and capable of lifting, a detachable reducer semi-finished product positioning seat 30 is fixed on the base 10, and a detachable pressing head 40 is fixed on the pressing seat 20.

[0032] The pressing head 40 comprises an oil seal pressing part 401 and an end cover pressing part 402 arranged coaxially, and the oil seal pressing part 401 is protrusively arranged in the middle part of the end cover pressing part 402.

[0033] According to the above technical scheme, the reducer semi-finished product 91 is placed on the reducer semi-finished product positioning seat, and the reducer semi-finished product positioning seat is used for centering and supporting the reducer semi-finished product.

[0034] Then, the bearing, end cover and oil seal are sequentially sleeved on the worm shaft of the reducer semi-finished product, and the positions of the three are manually adjusted.

[0035] Then, the pressing seat drives the pressing head to move downward, and the oil seal pressing part of the pressing head first contacts the oil seal. Since the oil seal is relatively soft and easy to deform, the oil seal is pressed into the end cover, and the height of the protrusion of the oil seal pressing part can control the depth of the oil seal pressed into the end cover.

[0036] Then, the end cover pressing part of the pressing head is pressed against the end cover, the bearing hole of the end cover is inserted into the outer ring of the bearing, and the inner ring of the bearing is gradually inserted into the worm shaft, thereby completing the one-time installation of the end cover, bearing and oil seal.

[0037] The middle part of the pressing head 40 is formed with a clearance cavity 403 with an opening on the lower side, and the clearance cavity is used for avoiding interference with the worm shaft during pressing work.

[0038] The outer diameter of the oil seal pressing part 401 is smaller than the inner diameter of the shaft seal hole 901 of the end cover 90. Since the position deviation of the end cover and the oil seal is relatively large when they are initially placed, the relatively small outer diameter of the oil seal pressing part can prevent the oil seal pressing part from being directly pressed on the end cover.

[0039] The outer diameter of the end cover pressing part 402 is larger than the outer diameter of the upper end outer wall of the shaft seal hole 901. During pressing, the end cover pressing part can cover the upper end surface of the shaft seal hole, so that the upper end surface of the shaft seal hole is prevented from being pressed.

[0040] The reducer semi-finished product positioning seat 30 is formed with an upper-side-opened circular positioning counterbore 301. The hole diameter of the circular positioning counterbore 301 is gap-fitted with the outer diameter of the positioning part 911 of the reducer semi-finished product 91.

[0041] The circular positioning counterbore mainly positions the center of the reducer semi-finished product and supports the bottom of the reducer semi-finished product.

[0042] The pressing head 40 and the reducer semi-finished product positioning seat 30 are matched.

[0043] The pressing head 40 and the reducer semi-finished product positioning seat 30 have multiple sizes. The multiple sizes can adapt to the pressing work of reducers of different sizes.

[0044] The middle part of the pressing head 40 is formed with an upwardly-protruding connecting mandrel 404. The connecting mandrel 404 is inserted into the pressing seat 20. The pressing seat 20 is screwed with a locking screw 21, which is tightly arranged on the outer wall of the connecting mandrel 404. When the locking screw is loosened, the connecting mandrel can be separated from the pressing seat, so that the installation and replacement of the pressing head can be facilitated.

[0045] The reducer semi-finished product positioning seat 30 is connected with the base 10 through the second screw 31, so that the replacement of the reducer semi-finished product positioning seat can be facilitated.

[0046] The above is only the preferred embodiment of the present application. It should be noted that, for those skilled in the art, without departing from the technical principles of the present application, some improvements and modifications can be made. The above-mentioned improvements and modifications are also considered as the protection scope of the present application.

Claims

1. A reducer end cover, bearing, oil seal one-time pressing device, comprising a base (10) and a pressing seat (20) arranged above the base (10) and capable of being lifted, characterized in that: The base (10) is fixed with a detachable reducer semi-finished product positioning seat (30), and the pressing seat (20) is fixed with a detachable pressing head (40); The pressing head (40) comprises a coaxial pressing oil seal part (401) and a pressing end cover part (402), and the pressing oil seal part (401) is protrusively arranged in the middle part of the pressing end cover part (402).

2. A reducer end cover, bearing, oil seal press fitting device according to claim 1, characterized in that: The middle part of the pressing head (40) is formed with a lower opening accommodation cavity (403).

3. A reducer end cover, bearing, oil seal press-fit device according to claim 1, characterized in that: The outer diameter of the pressing oil seal part (401) is smaller than the inner diameter of the shaft seal hole (901) of the end cover (90). The outer diameter of the pressing end cover part (402) is greater than the outer diameter of the upper end outer wall of the shaft seal hole (901).

4. A reducer end cover, bearing, oil seal press-in device according to claim 1, characterized in that: The reducer semi-finished product positioning seat (30) is formed with an upper opening circular positioning counterbore (301), and the hole diameter of the circular positioning counterbore (301) is gap-fitted with the outer diameter of the positioning part (911) of the reducer semi-finished product (91).

5. A reducer end cover, bearing, oil seal press-in device one-time press-in device according to claim 4, characterized in that: The pressing head (40) and the reducer semi-finished product positioning seat (30) are matchedly arranged. The pressing head (40) and the reducer semi-finished product positioning seat (30) have multiple size specifications.

6. A reducer end cover, bearing, oil seal press-in device according to claim 5, characterized in that: The middle part of the pressing head (40) is formed with an upward protruding connecting mandrel (404), the connecting mandrel (404) is inserted into the pressing seat (20), the pressing seat (20) is screwed with a locking screw (21), and the locking screw (21) is tightly arranged on the outer wall of the connecting mandrel (404). The reducer semi-finished product positioning seat (30) is connected with the base (10) through a second screw (31).

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