Hydraulic gear mounting tool

Abstract

The utility model relates to the technical field of gear installation, in particular to a hydraulic gear installation tool which comprises a threaded ejector rod, a chock plug is arranged at the right end of the threaded ejector rod, the chock plug is arranged in a threaded cavity in a threaded fit mode, and the threaded cavity is located in the center of the left end of a guide rod. The gear is mounted on the guide rod; a hydraulic oil channel is arranged in the threaded ejector rod and the chock plug, a plunger rod is inserted into the left end of the hydraulic oil channel, the left end of the plunger rod is connected to a threaded pressing sleeve, and the threaded pressing sleeve is connected to the left end of the threaded ejector rod in a threaded and sleeved mode. A plurality of small holes are formed in the guide rod, one end of each small hole is connected with the threaded cavity, and the other end of each small hole is located at the gear and guide rod installation position. The position of the gear is moved through hydraulic pressure, and therefore the position of the gear can be well adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of gear installation, in particular to a tool for hydraulically installing gears. Background Art

[0002] Usually, gear transmission uses key transmission, but if a keyway is made on the gear, it will affect the dynamic balance of the gear. When the gear rotates at high speed, it will vibrate and make abnormal noises. Therefore, the gear and shaft are designed to be too tight with a taper. Ordinary method of installing gears: Use brute force to hit the gear to the corresponding position, the force is uneven, the installation is not accurate, the coaxiality of axial movement cannot be guaranteed, and the service life is short. Liquid nitrogen cooling method: Put the shaft into liquid nitrogen for cooling, and use the principle of thermal expansion and contraction to reduce the diameter of the shaft, so that it can be easily put into the gear hole. This method is easy to assemble, but it is prone to frostbite accidents and difficult to disassemble. Heating method: Heat the inner hole of the gear, and use the principle of thermal expansion and contraction to enlarge the size of the hole through the shaft, so that the shaft can be easily put in. However, after the heated parts return to their original temperature, the properties of the metal change, and other dimensional changes cannot be controlled, which will cause the parts to deform and make disassembly more difficult. Utility Model Content

[0003] The utility model provides a hydraulic gear installation tool, which can overcome certain defects of the prior art.

[0004] According to the utility model, a hydraulic gear installation tool comprises a threaded push rod, a plug is provided at the right end of the threaded push rod, the plug thread is fitted in a threaded cavity, and the threaded cavity is located at the center of the left end of a guide rod; the gear is installed on the guide rod;

[0005] A hydraulic oil channel is provided in the threaded push rod and the plug head, a plunger rod is inserted into the left end of the hydraulic oil channel, the left end of the plunger rod is connected to the threaded pressing sleeve, and the threaded pressing sleeve is threadedly sleeved on the left end of the threaded push rod;

[0006] A plurality of small holes are arranged in the guide rod, one end of the small hole is connected with the threaded cavity, and the other end of the small hole is located at the installation position of the gear and the guide rod.

[0007] Preferably, the gear is pressed by a hexagonal pressing block, and the hexagonal pressing block is threadedly sleeved on the right end of the guide rod.

[0008] The beneficial effects of the utility model are:

[0009] The utility model uses hydraulic pressure to move the gear, so that the position of the gear can be adjusted better. After the oil pressure is removed, the gear can be tightly installed in the ideal position. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of a tool for hydraulically installing gears in an embodiment. DETAILED DESCRIPTION

[0011] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0012] Example

[0013] like Figure 1 As shown, this embodiment provides a tool for hydraulically installing a gear, which includes a threaded push rod 3, a plug 31 is provided at the right end of the threaded push rod 3, the plug 31 is threadedly fitted in a threaded cavity 51, and the threaded cavity 51 is located at the center of the left end of a guide rod 5; the gear 4 is installed on the guide rod 5;

[0014] A hydraulic oil passage 32 is provided in the threaded push rod 3 and the plug head 31, a plunger rod 2 is inserted into the left end of the hydraulic oil passage 32, the left end of the plunger rod 2 is connected to the threaded pressing sleeve 1, and the threaded pressing sleeve 1 is threadedly sleeved on the left end of the threaded push rod 3;

[0015] A plurality of small holes 52 are provided in the guide rod 5 , one end of the small hole 52 is connected to the threaded cavity 51 , and the other end of the small hole 52 is located at the installation position of the gear 4 and the guide rod 5 .

[0016] The gear 4 is pressed by a hexagonal pressing block 7 , and the hexagonal pressing block 7 is threadedly sleeved on the right end of the guide rod 5 .

[0017] Fill the threaded cavity 51 and the hydraulic oil channel 32 with hydraulic oil, and rotate the threaded sleeve 1 to drive the plunger rod 2 to move, so that the plunger rod 2 squeezes the hydraulic oil, and the hydraulic oil transmits the force to the gear 4 through the small hole 52, so that the inner ring of the gear 4 is forced to expand, and the gear 4 and the guide rod 5 are no longer so tight. Rotate the hexagonal pressure block 7 to push the gear 4 to move to a tighter position. Remove the oil pressure, and the gear 4 and the guide rod 5 will be too tight.

[0018] In this embodiment, the gear 4 is moved by hydraulic pressure, so that the position of the gear 4 can be adjusted better. After the oil pressure is removed, the gear 4 can be tightly installed in the ideal position.

[0019] In actual operation, the range of movement of the gear 4 by the oil pressure is very small, only about 4 mm, and the gear 4 will always cover the small hole 52. The hydraulic oil used in this embodiment is very small. After the adjustment is completed, the hydraulic oil is allowed to flow out and then cleaned up.

[0020] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A tool for hydraulically installing gears, characterized in that: It comprises a threaded push rod (3), a plug (31) is provided at the right end of the threaded push rod (3), the plug (31) is threadedly engaged in a threaded cavity (51), and the threaded cavity (51) is located at the center of the left end of a guide rod (5); a gear (4) is mounted on the guide rod (5); A hydraulic oil passage (32) is provided in the threaded push rod (3) and the plug head (31), a plunger rod (2) is inserted into the left end of the hydraulic oil passage (32), the left end of the plunger rod (2) is connected to the threaded pressing sleeve (1), and the threaded pressing sleeve (1) is threadedly sleeved on the left end of the threaded push rod (3); A plurality of small holes (52) are arranged in the guide rod (5), one end of the small hole (52) is connected to the threaded cavity (51), and the other end of the small hole (52) is located at the installation position of the gear (4) and the guide rod (5).

2. A hydraulic gear installation tool according to claim 1, characterized in that: The gear (4) is pressed by a hexagonal pressing block (7), and the hexagonal pressing block (7) is threadedly sleeved on the right end of the guide rod (5).

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