CN207267794U - Mandrel fixture for cold dismantling of electric rake winches - Google Patents

Abstract

The utility model belongs to mechanical equipment technical field, more particularly, to a kind of fixer for mandrel for the cold dismounting of scraper winch, including tripod, two fixing bolts on this tripod top are set, it is characterized in that being equipped with mandrel fixed pin on a fixing bolt, fixed steel wire is connected between two fixing bolts, mandrel fixed pin includes fixing end and straight pin, fixed end cap is connected on a fixing bolt, and straight pin is inserted in the termination tapping of mandrel.The utility model changes pressing plate fixed mode, can effectively prevent central axis, is readily disassembled, eliminate heat dismounting center roller and bearing damages, the service life of sun gear in scraper winch, planetary gear and bearing is extended, shortens the repair time, reduces the consumption of material and spare part；In addition, using the fixing device of the utility model, during dismounting, as long as twisting off fixing bolt, dismantled without electrogas welding.

Description

Mandrel fixture for cold dismantling of electric rake winches

technical field

The utility model belongs to the technical field of mechanical equipment, in particular to a mandrel fixing device for cold dismantling of an electric rake winch.

Background technique

Electric rake winch is a kind of ore handling tool commonly used in underground mines. During the use of the electric rake winch, the tripod mandrels in the main and auxiliary reels often loosen, resulting in damage to the sun gear, planetary gear and bearings. The current fixing method of the tripod mandrel is to utilize the pressing plate at one end of the mandrel to fix, so that the long side of the lower part of the pressing plate is tightly against the plane of the mandrel's flattened position, and the mandrel is fixed.

The defects of the prior art are: during the ore raking process, due to the large particle size of the ore, the impact changes greatly and the load changes greatly. Although the axial movement of the mandrel is not damaged, the length of the pressing plate and the mandrel Over time the wear wears off, gradually causing the mandrel to turn. Once the mandrel rotates, the shaft and the hole will be worn at the same time, and the diameter of the hole will increase, which will cause a large radial runout of the planetary wheel, and in severe cases, the mandrel and the tripod will break. Due to friction and heating, the bearings will be plastically deformed, the gears will be pitted, glued, teeth will be broken, the rake winch will be locked, and the motor reducer and parts will be damaged; at the same time, a lot of vibration and noise will be generated.

Contents of the invention

The purpose of this utility model is to provide a simple structure, easy installation, which can effectively prevent the mandrel and the pressure plate from mutual abrasion and cause the mandrel to rotate, prolong the service life of the sun gear, planetary gear and bearing in the electric rake winch, shorten the maintenance time, Spindle fixture for cold dismantling of rake winches with reduced material and spare parts consumption.

The purpose of this utility model is achieved through the following technical solutions:

The mandrel fixing device used for the cold disassembly of the electric rake winch of the utility model includes a tripod, and two fixing bolts arranged on the upper part of the tripod are characterized in that one fixing bolt is provided with a mandrel fixing pin, and A fixed steel wire is connected between the two fixed bolts, the fixed pin of the mandrel includes a fixed end and a cylindrical pin, the fixed end is sleeved on the fixed bolt, and the cylindrical pin is inserted into the end opening.

The fixing end of the mandrel fixing pin is a square fixing end, and the center of the square fixing end is provided with a center hole matching the fixing bolt, and the fixing bolt is arranged in the center hole.

Advantage of the utility model:

The mandrel fixing device used for the cold disassembly of the electric rake winch of the utility model changes the fixing mode of the pressure plate, can effectively prevent the mandrel from rotating, is easy to disassemble, eliminates the damage to the mandrel and bearings caused by hot disassembly, and prolongs the working life of the electric rake winch. The service life of the wheels, planetary wheels and bearings shortens the maintenance time and reduces the consumption of materials and spare parts; in addition, using the new type of fixing device, when disassembling, it only needs to unscrew the fixing bolts without electric welding.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a left view of Fig. 1 of the utility model.

Fig. 3 is a schematic structural view of the mandrel fixing pin of the present invention.

Detailed ways

Further illustrate the specific embodiment of the present utility model below in conjunction with accompanying drawing.

As shown in Figures 1, 2 and 3, the mandrel fixing device used for the cold disassembly of the electric rake winch of the present utility model includes a tripod 1, and two fixing bolts 3 arranged on the top of the tripod 1 are characterized in that A fixed bolt 3 is provided with a mandrel fixed pin 4, and a fixed steel wire 5 is connected between the two fixed bolts 3. The described mandrel fixed pin 4 includes a fixed end 4-1 and a cylindrical pin 4-2. The fixed end 4 - 1 is sleeved on the fixed bolt 3 , and the cylindrical pin 4 - 2 is inserted into the opening at the end of the mandrel 2 .

The fixed end 4-1 of the mandrel fixed pin 4 is a square fixed end, and the center of the square fixed end is provided with a central hole matching the fixed bolt 3, and the fixed bolt 3 is arranged in the center inside the hole.

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1, 2 and 3: use 45 ^# steel processing to make the mandrel fixed pin 4 that is made up of fixed end 4-1 and cylindrical pin 4-2. The fixed end 4-1 has a center hole for passing through the fixing bolt 3 to fix the mandrel 2. The diameter of the center hole is determined according to the type of the fixing bolt 3, and the thickness of the fixed end 4-1 is generally 4-7mm. If the diameter of the mandrel 2 is d, the diameter of the cylindrical pin 4-2 is about 1/4 of d. For example, the diameter of the mandrel of the electric rake winch is 45mm, and the diameter of the cylindrical pin is about 10mm.

Drill a hole at the fixed part of the mandrel 2 ends, the diameter of the hole is slightly larger than the diameter of the cylindrical pin 4-2, closely fit with the cylindrical pin 4-2, and ensure that the cylindrical pin 4-2 can pass through the drilling; fix the mandrel 2 , insert the finished cylindrical pin 4-2 into the drilled hole at the fixed end of the mandrel 2, fix the cylindrical pin 4-2 on the tripod 1 with the fixing bolt 3, and then use the thin fixing steel wire 5 to connect the two The fixing bolt 3 is fixed to prevent the fixing bolt 3 from rotating and loosening; when dismounting, only the fixing bolt 3 needs to be removed.

The mandrel fixing device used for cold disassembly of the electric rake winch of the utility model changes the fixing mode of the pressing plate, can effectively prevent the mandrel 2 from rotating, is easy to disassemble, eliminates the damage to the mandrel 2 and bearings caused by hot disassembly, and prolongs the life of the electric rake winch. The service life of the sun gear, planetary gear and bearing shortens the maintenance time, reduces the consumption of materials and spare parts; in addition, using the new type of fixing device, when dismounting, only need to unscrew the fixing bolt 3, and disassembly without electric welding .

Claims (2)

1. a kind of fixer for mandrel for the cold dismounting of scraper winch, including tripod, set two on this tripod top A fixing bolt, it is characterised in that mandrel fixed pin is equipped with a fixing bolt, is connected between two fixing bolts Fixed steel wire is connected to, the mandrel fixed pin includes fixing end and straight pin, and the fixed end cap is connected on described one On fixing bolt, the straight pin is inserted in the termination tapping of mandrel.

2. the fixer for mandrel according to claim 1 for the cold dismounting of scraper winch, it is characterised in that the heart The fixing end of axis fixed pin is square fixed end, and the center of this square fixed end is equipped with the center to match with the fixing bolt Hole, the fixing bolt are arranged in the centre bore.