CN221695894U - Frock is used in change of horizontal major axis bearing and gear - Google Patents

Abstract

The utility model relates to the field of long shaft hoisting tools and discloses a tool for replacing a horizontal long shaft bearing and a gear, which comprises a stand column, wherein the bottom end of the stand column is fixed with a transverse shaft sleeve, the front end opening of the shaft sleeve is in clearance fit with the horizontal long shaft, the rear end of the shaft sleeve is fixed with a sealing plate, the sealing plate is provided with a connecting hole, a connecting piece connected with the end part of the horizontal long shaft is arranged in the connecting hole, the top end of the stand column is fixed with a cross beam parallel to the shaft sleeve, the cross beam is positioned above the front end of the shaft sleeve, a lifting lug is connected onto the cross beam in a sliding manner, and the lifting lug can be locked on the cross beam. The tool disclosed by the utility model has universality, can be used for horizontally hoisting a high-speed gear shaft, and has a certain range of size coverage capability. The problem that the prior art lacks special tools for the installation of the horizontal long shaft and the bearing, the labor intensity in the assembly process is high, and the clamping resistance and the damage to the bearing and the tooth surface are frequently caused in the assembly process can be solved.

Description

A tool for replacing horizontal long shaft bearings and gears

Technical Field

The utility model relates to the field of long-axis hoisting tooling, in particular to a tooling for assembling, disassembling and replacing horizontal long-axis bearings and gears.

Background Art

Gearboxes are commonly used transmission components in industry. They transmit power through transmission shafts supporting gear sets. Gearboxes used in wind turbines and some heavy industries are usually large in size. The transmission shafts, bearings, gears, etc. used also have sizes and weights far exceeding those of conventional products. When the transmission shaft is installed horizontally, the gears are also in a horizontal state. If a longer gear shaft is to be assembled into a bearing seat, the parallelism of the gear shaft and the bearing hole must be maintained. If the gear shaft is tilted, it is easy to get stuck during assembly, damaging the bearing raceway or gear tooth surface. The prior art lacks special tooling for the installation of such horizontal long shafts and bearings. The assembly process is labor-intensive, and jamming and damage to the bearings and tooth surfaces often occur during the assembly process.

Utility Model Content

The utility model is intended to provide a tooling for replacing horizontal long shaft bearings and gears, so as to solve the problems in the prior art of lack of special tooling for the installation of horizontal long shafts and bearings, high labor intensity in the assembly process, frequent jamming and damage to bearings and tooth surfaces during the assembly process.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tool for replacing horizontal long shaft bearings and gears, including a column, a horizontal sleeve is fixed to the bottom end of the column, the front end opening of the sleeve is matched with the clearance of the horizontal long shaft, a sealing plate is fixed to the rear end, a connecting hole is opened on the sealing plate, a connecting piece connected to the end of the horizontal long shaft is provided in the connecting hole, a cross beam parallel to the sleeve is fixed to the top of the column, the cross beam is located above the front end of the sleeve, a lifting ear is slidably connected to the cross beam, and the lifting ear can be locked on the cross beam.

Preferably, as an improvement, the radial clearance between the sleeve and the horizontal major axis is 0.1-0.25 mm.

Preferably, as an improvement, the connecting hole is a waist-shaped hole.

Preferably, as an improvement, the column is a T-shaped ribbed plate column.

Preferably, as an improvement, the crossbeam is a round tube, and reinforcing ribs are fixed between the bottom of the crossbeam and the column.

Preferably, as an improvement, the lifting ear comprises a sliding sleeve mounted on the crossbeam, a lifting ear plate is fixed on the top of the sliding sleeve, and a lifting hole is formed on the lifting ear plate.

Preferably, as an improvement, positioning bolts are radially connected to the sliding sleeve.

Preferably, as an improvement, a baffle is fixed to the end of the crossbeam away from the column, and the baffle can limit the sliding sleeve from falling off the crossbeam.

The principle and advantages of this scheme are: in actual application, each tool is suitable for a gear shaft with a shaft diameter size, and can be suitable for shafts with a circumference less than one-third. During the assembly process of the high-speed gear shaft and the bearing seat, the mobile tool inserts the non-assembly end of the gear shaft into the sleeve, and connects it with the center hole or other process holes at the end of the gear shaft through the connecting piece in the connecting hole, so that the gear shaft and the sleeve are fixed, and the sleeve provides support within a certain length range at the end of the gear shaft. The T-shaped rib plate column as a column can strengthen the rigidity of the sleeve and provide vertical support. The crossbeam serves as a mobile guide support for hoisting and assembly, the reinforcing ribs improve the support of the crossbeam, the lifting lug serves as a hanging point for hoisting, the sliding sleeve provides axial freedom of movement between the hanging point and the crossbeam, and the baffle prevents the sliding sleeve from falling off the crossbeam, so that the crossbeam, column, sleeve, and gear shaft can be hung as a whole, and the relative position of the hanging point and the overall center of the tooling can be adjusted by axial translation. When the center of the tooling and the center of the lifting hole are in a plumb line, the hoisted gear shaft is in a horizontal state, and the relative position of the sleeve on the beam can be locked by the positioning bolts, and then the overall translation can be maintained to maintain the parallelism between the gear shaft and the shaft hole of the bearing seat. The end of the gear shaft can smoothly enter the shaft hole to avoid damage to the bearing raceway or tooth surface, and the gear shaft and the bearing seat can be accurately aligned and installed. The use of such tooling for the installation of high-speed gear shafts is more convenient and quick, and the installation quality is stable and reliable. It is more suitable for on-site horizontal installation and removal of longer high-speed gear shafts. In addition, this tooling is universal. By using this tooling, the horizontal lifting of high-speed gear shafts can be achieved, and it has a certain range of size coverage capabilities.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the utility model.

DETAILED DESCRIPTION

The following is further described in detail through specific implementation methods:

The figure marks in the drawings of the specification include: column 1, sleeve 2, connecting hole 3, connecting piece 4, beam 5, reinforcing rib 6, sliding sleeve 7, lifting ear plate 8, lifting hole 9, baffle 10, positioning bolt 11, gear shaft 12, bearing outer ring assembly 13.

The embodiment is basically as shown in Figure 1: a tool for replacing horizontal long shaft bearings and gears, including a column 1, which is a T-shaped rib plate column with a large bottom and a small top. A horizontal sleeve 2 is welded and fixed at the bottom end of the column 1, and the right end opening of the sleeve 2 is matched with the horizontal long shaft clearance, and the radial clearance between the sleeve 2 and the horizontal long shaft is 0.1-0.25mm. A sealing plate is welded and fixed at the left end of the sleeve 2, and a connecting hole 3 is opened on the sealing plate. The connecting hole 3 is a waist-shaped hole passing through the axis of the sleeve 2. A connecting piece 4 connected to the end of the horizontal long shaft is provided in the connecting hole 3, and the connecting piece 4 is bolted. A crossbeam 5 parallel to the sleeve 2 is welded and fixed at the top of the column 1. The crossbeam 5 is located above the right end of the sleeve 2. The crossbeam 5 is a round tube. A reinforcing rib 6 is welded and fixed between the bottom of the crossbeam 5 and the column 1. A lifting lug is slidably connected to the crossbeam 5. The lifting lug includes a sliding sleeve 7 sleeved on the crossbeam 5. A lifting lug plate 8 is welded and fixed on the top of the sliding sleeve 7. A lifting hole 9 is opened on the lifting lug plate 8. The sliding sleeve 7 is radially threaded with a positioning bolt 11, and the lifting lug can be locked on the cross beam 5 by the positioning bolt 11. A baffle 10 is fixed to the end of the cross beam 5 away from the column 1, and the baffle 10 can prevent the sliding sleeve 7 from falling off from the cross beam 5.

The specific implementation process is as follows: insert the non-assembly end of the gear shaft 12 to be assembled into the sleeve 2, and use the connector 4 to thread and fix it with the center hole of the end of the gear shaft 12, so that the gear shaft 12 is connected and fixed with the sleeve 2, and the sleeve 2 provides support within a certain length of the end of the gear shaft 12. The lifting lug is hung by a crane, the positioning bolt 11 is loosened, and the relative position between the crossbeam 5 and the sliding sleeve 7 is adjusted so that the center of the tooling as a whole and the center of the lifting hole 9 are in the plumb line. At this time, the lifted gear shaft 12 is in a horizontal state, and then the positioning bolt 11 is tightened to fix the relative position between the sliding sleeve 7 and the crossbeam 5. Then use a crane to move the tooling and the gear shaft 12 as a whole, so that the parallelism between the gear shaft 12 and the bearing outer ring assembly 13 meets the installation requirements, and then install the end of the gear shaft 12 with the bearing outer ring assembly 13. Since the gear shaft 12 is hoisted to remain horizontal, the gear shaft 12 and the shaft hole of the bearing outer ring assembly 13 are accurately aligned, and the gear shaft 12 can be smoothly installed with the shaft hole of the bearing outer ring assembly 13 without causing damage to the bearing roller raceway, etc., and the assembly can be completed efficiently and with high quality.

Each tool is suitable for a gear shaft 12 with a shaft diameter size, and can be suitable for shafts with a circumference less than one-third. It has universality, and the use of this tool can realize the horizontal lifting of the high-speed gear shaft 12, and has a certain range of size coverage capabilities.

The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical scheme and/or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical scheme of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims (8)

1. A tool for replacing horizontal long shaft bearings and gears, characterized in that it includes a column, a horizontal sleeve is fixed to the bottom end of the column, the front end opening of the sleeve is matched with the clearance of the horizontal long shaft, a sealing plate is fixed to the rear end, a connecting hole is opened on the sealing plate, a connecting piece connected to the end of the horizontal long shaft is arranged in the connecting hole, a crossbeam parallel to the sleeve is fixed to the top end of the column, the crossbeam is located above the front end of the sleeve, a lifting ear is slidably connected to the crossbeam, and the lifting ear can be locked on the crossbeam. 2. A tool for replacing horizontal long shaft bearings and gears according to claim 1, characterized in that the radial clearance between the sleeve and the horizontal long shaft is 0.1-0.25 mm. 3. A tool for replacing horizontal long-axis bearings and gears according to claim 2, characterized in that the connecting hole is a waist-shaped hole. 4. A tool for replacing horizontal long-axis bearings and gears according to claim 3, characterized in that the column is a T-shaped ribbed plate column. 5. A tool for replacing horizontal long-axis bearings and gears according to claim 4, characterized in that the crossbeam is a round tube, and reinforcing ribs are fixed between the bottom of the crossbeam and the column. 6. A tool for replacing horizontal long-axis bearings and gears according to claim 5, characterized in that the lifting ear comprises a sliding sleeve mounted on the crossbeam, a lifting ear plate is fixed on the top of the sliding sleeve, and a lifting hole is opened on the lifting ear plate. 7. A tool for replacing horizontal long-axis bearings and gears according to claim 6, characterized in that positioning bolts are radially connected to the sliding sleeve. 8. A tool for replacing horizontal long-axis bearings and gears according to claim 7, characterized in that a baffle is fixed to the end of the crossbeam away from the column, and the baffle can prevent the sliding sleeve from falling off the crossbeam.