Gear press-fitting combined pressure maintaining device

Abstract

The utility model belongs to the technical field of gear press fitting, and particularly relates to a gear press fitting combined pressure maintaining device which comprises a lifting mechanism, an assembly head and an operation table which are sequentially installed from top to bottom, and a pressure maintaining mechanism is installed between the lifting mechanism and the assembly head. The pressure maintaining mechanism is provided with a supporting piece and an air supply mechanism used for adjusting the axial height of the supporting piece, an air storage space used for being communicated with the air supply mechanism is formed in the supporting piece, and the air supply mechanism is further electrically connected with a detection mechanism used for detecting the air pressure in the air storage space. The pressure maintaining mechanism is arranged between the lifting mechanism and the assembling head, the supporting piece comprises a telescopic air cylinder and a sleeve, the air storage space is formed between the air cylinder and the sleeve, and the air supply mechanism comprises an air pump and a hose connected with the output end of the air pump. And the pressure maintaining function is achieved in the press-fitting process of the equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear press-fitting, and in particular relates to a gear press-fitting combined pressure-maintaining device. Background Art

[0002] Gear press-fitting is the process of press-fitting parts with interference fits by hydraulic presses. During the press-fitting process, the parts will generate heat through friction. During the cooling process, the parts will shrink when cooling, which will cause displacement between parts, and then cause the parts to be not assembled in place. For this reason, a gear press-fitting combined pressure-maintaining device is urgently needed to prevent the parts from being displaced when cooling after assembly. Utility Model Content

[0003] The purpose of the utility model is to provide a gear press-fit combined pressure-maintaining device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gear press-fit combined pressure-maintaining device, comprising: a lifting mechanism, an assembly head and an operating table are installed in sequence from top to bottom, a pressure-maintaining mechanism is installed between the lifting mechanism and the assembly head, the pressure-maintaining mechanism has a support member and an air supply mechanism for adjusting the axial height of the support member, an air storage space for communicating with the air supply mechanism is formed in the support member, and the air supply mechanism is also electrically connected to a detection mechanism for detecting the air pressure in the air storage space.

[0005] Preferably, the support member comprises a telescopic gas cylinder and a sleeve, and the gas storage space is formed between the gas cylinder and the sleeve.

[0006] Preferably, the air supply mechanism comprises an air pump and a hose connected to an output end of the air pump, one end of the hose is mounted on the air cylinder, and one end of the hose extends into the air storage space.

[0007] Preferably, at least one annular groove is provided on the outer side of the sleeve near one end of the gas cylinder, and a sealing ring abutting against the inner wall of the gas cylinder is installed in each of the annular grooves.

[0008] Preferably, the detection mechanism includes an air pressure display.

[0009] Preferably, a mounting seat and an external threaded joint are sequentially mounted downwardly at the bottom end of the sleeve, and a connecting seat threadedly connected to the external threaded joint is mounted at the top of the assembly head.

[0010] Preferably, an exhaust pipe is also installed on the mounting seat, and one end of the exhaust pipe extends to the interior of the sleeve, and a valve is installed on the exhaust pipe.

[0011] Preferably, the lifting mechanism includes a top plate and a hydraulic cylinder, columns are installed at the four corners between the bottom of the top plate and the top of the operating table, and the hydraulic cylinder is installed in the longitudinal direction between the top plate and the top of the air cylinder.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The utility model has a pressure-maintaining mechanism which is added between the lifting mechanism and the assembly head, thereby achieving the function of maintaining pressure during the press-assembly process of the equipment.

[0014] (2) The utility model adds a sleeve, an air cylinder, a detection mechanism and an air supply mechanism. The air supply mechanism can supply air between the sleeve and the air cylinder. After the air is supplied, the sleeve is pressed at the gear assembly position by the air pressure. The detection mechanism allows a certain air pressure to be maintained between the sleeve and the air cylinder at all times, thereby allowing the force with which the sleeve presses the gear to remain consistent.

[0015] (3) The utility model adds a connecting seat, an external thread joint and a mounting seat, and the assembly head can be detachably mounted on the mounting seat through the connecting seat and the external thread joint, so that the equipment can be convenient for processing gears of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a schematic diagram of the coordination of the gas cylinder, sleeve, mounting seat, connecting seat and exhaust pipe of the utility model;

[0018] Figure 3 It is a stereoscopic diagram of the sleeve, mounting base and exhaust pipe of the utility model;

[0019] In the figure: 1. operating table; 2. assembly head; 3. mounting base; 4. air cylinder; 5. hose; 6. air pressure display; 7. air pump; 8. hydraulic cylinder; 9. top plate; 10. column; 11. exhaust pipe; 12. valve; 13. connecting base; 14. external threaded joint; 15. sleeve; 16. ring groove; 17. sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] refer to Figure 1As shown, the utility model provides a gear press-fitting combined pressure-maintaining device, comprising: a lifting mechanism, an assembly head 2 and an operating table 1 are sequentially installed from top to bottom, a pressure-maintaining mechanism is installed between the lifting mechanism and the assembly head 2, the pressure-maintaining mechanism has a support member and an air supply mechanism for adjusting the axial height of the support member, an air storage space for communicating with the air supply mechanism is formed in the support member, and a detection mechanism for detecting the air pressure in the air storage space is also electrically connected to the air supply mechanism.

[0022] In the present utility model, combined with Figure 2 As shown, the support member of this embodiment includes a telescopic gas cylinder 4 and a sleeve 15 , and a gas storage space is formed between the gas cylinder 4 and the sleeve 15 .

[0023] Combination Figure 1 As shown, the detection mechanism includes an air pressure display 6 .

[0024] Combination Figure 1-3 As shown, an exhaust pipe 11 is also installed on the mounting seat 3 , and one end of the exhaust pipe 11 extends to the inside of the sleeve 15 , and a valve 12 is installed on the exhaust pipe 11 .

[0025] As mentioned above, when using the lifting mechanism, assembly head 2 and operating table 1 provided by the utility model, the gear parts are placed between the operating table 1 and the assembly head 2, the lifting mechanism is started, and the assembly head 2 is driven to press the gear parts. After the pressing is completed, the lifting mechanism is reset, and the assembly head 2 is driven away from the gear. At this time, the air supply mechanism supplies air between the air cylinder 4 and the sleeve 15, thereby driving the sleeve 15 to descend on the air cylinder 4, and then driving the assembly head 2 to press on the gear again. In this process, the air pressure in the air storage space is displayed by the air pressure display 6, and at the same time, a certain air pressure is always maintained in the air storage space, so that the gear is kept under a certain pressure for a period of time. The exhaust pipe 11 can be opened through the valve 12, so as to facilitate the discharge of the gas in the air storage space. In this process, the lifting mechanism can be started synchronously to store the sleeve 15 in the air cylinder 4.

[0026] Further, in order to facilitate the gas supply to the gas storage space, refer to Figure 2 As shown, the air supply mechanism includes an air pump 7 and a hose 5 connected to the output end of the air pump 7, one end of the hose 5 is mounted on the air cylinder 4, and one end of the hose 5 extends into the air storage space. The air pump 7 is connected to the air storage space between the air cylinder 4 and the sleeve 15 through the hose 5. When the gear needs to be pressure-maintained, the air pump 7 is started to introduce external air into the air storage space through the hose 5, thereby driving the sleeve 15 to descend on the air cylinder 4 and abut against the gear, so that a certain air pressure is always maintained in the air storage space, so that the gear always applies a pressing force to the gear under a certain pressure.

[0027] Further, in order to avoid leakage between the cylinder 4 and the sleeve 15, refer to Figure 2 As shown, at least one annular groove 16 is provided on the outer side of the sleeve 15 near one end of the gas cylinder 4, and a sealing ring 17 is installed in each annular groove 16 to abut against the inner wall of the gas cylinder 4. The sealing ring 17 is sleeved on the end of the sleeve 15 through the annular groove 16, and the sleeve 15 is inserted into the gas cylinder 4. During this process, the sealing ring 17 is pressed and filled in the gap between the sleeve 15 and the gas cylinder 4 to prevent gas leakage between the gas cylinder 4 and the sleeve 15.

[0028] In the present utility model, combined with Figure 2-3 As shown, the bottom end of the sleeve 15 of this embodiment is also installed with a mounting seat 3 and an external threaded joint 14 in sequence downward, and the top of the assembly head 2 is installed with a connecting seat 13 screwed on the external threaded joint 14.

[0029] As mentioned above, when using the mounting seat 3 and the connecting seat 13 provided by the utility model, the mounting seat 3 provides a mounting position for the external threaded joint 14 at the bottom of the sleeve 15, and the assembly head 2 can be screwed on the external threaded joint 14 through the connecting seat 13. When assembling gears of different sizes, it is only necessary to unscrew the connecting seat 13 from the external threaded joint 14 and replace the connecting seat 13 with a different size.

[0030] In the present utility model, combined with Figure 1 As shown, the lifting mechanism of this embodiment includes a top plate 9 and a hydraulic cylinder 8, and columns 10 are installed at the four corners between the bottom of the top plate 9 and the top of the operating table 1, and the hydraulic cylinder 8 is installed in the longitudinal direction between the top plate 9 and the top of the air cylinder 4.

[0031] As mentioned above, when using the lifting mechanism provided by the utility model, the top plate 9 in the lifting mechanism is suspended above the operating table 1 through the column 10, and the top plate 9 provides an installation position for the hydraulic cylinder 8. The hydraulic cylinder 8 can drive the assembly head 2 to move up and down, thereby facilitating the assembly head 2 to press the gear.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear press-fit combined pressure-maintaining device, characterized in that: include: A lifting mechanism, an assembly head (2) and an operating table (1) are sequentially installed from top to bottom; a pressure-maintaining mechanism is installed between the lifting mechanism and the assembly head (2); the pressure-maintaining mechanism comprises a support member and an air supply mechanism for adjusting the axial height of the support member; an air storage space for communicating with the air supply mechanism is formed in the support member; and a detection mechanism for detecting the air pressure in the air storage space is also electrically connected to the air supply mechanism.

2. A gear press-fit combined pressure-maintaining device according to claim 1, characterized in that: The support member comprises a telescopic gas cylinder (4) and a sleeve (15), and the gas storage space is formed between the gas cylinder (4) and the sleeve (15).

3. A gear press-fit combined pressure-maintaining device according to claim 2, characterized in that: The air supply mechanism comprises an air pump (7) and a hose (5) connected to the output end of the air pump (7), one end of the hose (5) is mounted on the air cylinder (4), and one end of the hose (5) extends into the air storage space.

4. A gear press-fit combined pressure-maintaining device according to claim 2, characterized in that: At least one annular groove (16) is provided on the outer side of the sleeve (15) close to one end of the gas cylinder (4), and a sealing ring (17) is installed in each annular groove (16) to abut against the inner wall of the gas cylinder (4).

5. The gear press-fit combined pressure-maintaining device according to claim 1, characterized in that: The detection mechanism comprises an air pressure display (6).

6. A gear press-fit combined pressure-maintaining device according to claim 2, characterized in that: The bottom end of the sleeve (15) is also provided with a mounting seat (3) and an external threaded joint (14) in sequence downwardly mounted, and the top of the assembly head (2) is provided with a connecting seat (13) threadedly connected to the external threaded joint (14).

7. A gear press-fit combined pressure-maintaining device according to claim 6, characterized in that: An exhaust pipe (11) is also mounted on the mounting seat (3), and one end of the exhaust pipe (11) extends to the interior of the sleeve (15), and a valve (12) is mounted on the exhaust pipe (11).

8. The gear press-fit combined pressure-maintaining device according to claim 2, characterized in that: The lifting mechanism comprises a top plate (9) and a hydraulic cylinder (8), wherein columns (10) are installed at four corners between the bottom of the top plate (9) and the top of the operating table (1), and the hydraulic cylinder (8) is installed in the longitudinal direction between the top plate (9) and the top of the air cylinder (4).

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