CN113529509A

CN113529509A - Steel rail polishing head

Info

Publication number: CN113529509A
Application number: CN202010292107.3A
Authority: CN
Inventors: 杨国涛; 杨厚昌; 杨文志; 朱良凯; 古兴华; 刘洋; 郑汉斌; 陈继红
Original assignee: Gemac Engineering Machinery Co Ltd
Current assignee: Gemac Engineering Machinery Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-10-22

Abstract

The utility model provides a rail head of polishing, includes bistrique assembly, support frame, is used for driving the direction oil cylinder group that bistrique assembly goes up and down, direction oil cylinder group includes two hydro-cylinders, bistrique assembly includes motor, fixing base, emery wheel, and the casing of motor is adorned on the fixing base, and the axle of motor is located the fixing base lower part, and the emery wheel is adorned in the axle head portion of motor through the emery wheel mount pad, and the support frame middle part is equipped with the trompil that is used for stepping down the bistrique assembly, and the bistrique assembly is adorned in trompil department, and the support frame left and right sides respectively has a through-hole that is used for stepping down the hydro-cylinder piston rod, and the hydro-cylinder is located above the support frame, and hydro-cylinder lower extreme is fixed in the through-hole department on the left and right sides of support frame, and the hydro-cylinder piston rod end portion is connected with the fixing base. The invention provides a steel rail grinding head adopting an oil cylinder for lifting and guiding, which cancels an additional guiding mechanism, and the oil cylinder drives a grinding head assembly to lift and utilizes a piston rod of the oil cylinder to guide the grinding head assembly to lift, thereby simplifying the grinding head structure.

Description

Steel rail polishing head

Technical Field

The invention relates to the technical field of steel rail grinding devices, in particular to a steel rail grinding head adopting an oil cylinder for lifting and guiding.

Background

The grinding head of the rail grinding wagon has two actions during operation, wherein the grinding head deflects along the inner direction and the outer direction of the rail head of the rail to reach the angle required by the operation, and the grinding head is lifted to contact and separate the grinding wheel from the rail. The present rail grinding wagon is provided with a special guide mechanism for guiding the grinding head to stably lift, besides an oil cylinder 101 for driving the grinding head to lift, the guide mechanism comprises two guide columns (102, 103) and a guide sleeve matched with the guide columns, and the upper ends of the guide columns and the oil cylinder are fixed on a connecting plate 104. Influenced by the abominable operating mode of rail grinding wagon, this kind of guiding mechanism has following problem:

1. during operation of the steel rail grinding wagon, a large amount of dust and metal abrasive dust can be generated and can enter a fit clearance of a moving part of the guide mechanism, so that lifting and clamping of a grinding head are caused, and the sequential lifting of the grinding head is influenced; in severe cases, the polishing head may not descend, descend at a required place or cannot be lifted, and a great safety risk exists.

2. The sealing of the fit clearance of the moving part of the guide mechanism is not enough to resist the entering of dust and metal abrasive dust, although the lifting resistance is reduced by adopting the mode of oil injection lubrication or solid lubricant lubrication, the moving part of the guide mechanism still wears after long-time application, the fit clearance is further enlarged, and the action stability of the polishing head is influenced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the steel rail polishing head which is simple in structure, low in lifting resistance, high in motion stability of the polishing head and long in service life.

The technical scheme of the invention is as follows: the grinding head assembly comprises a motor, a fixing seat and a grinding wheel, a shell of the motor is arranged on the fixing seat, a shaft of the motor is located at the lower portion of the fixing seat, the grinding wheel is arranged at the shaft end portion of the motor through a grinding wheel mounting seat, a hole for the abdicating grinding head assembly is formed in the middle of the supporting frame, the grinding head assembly is arranged at the hole, through holes for the piston rods of the abdicating oil cylinders are formed in the left side and the right side of the supporting frame respectively, the oil cylinder is located above the supporting frame, the lower end of the oil cylinder is fixed at the through holes in the left side and the right side of the supporting frame, the piston rods of the oil cylinders penetrate through the through holes, and the end portions of the piston rods of the oil cylinders are connected with the fixing seat.

The axes of the two cylinder barrels are vertical to the upper surface of the support frame, and the central connecting line of the bottom surfaces of the two cylinder barrels is inclined to the laying direction of the steel rail.

The support frame is a square flat structure, and the two oil cylinders are arranged along the diagonal direction of the support frame.

And the piston rod of the oil cylinder is in clearance fit with the through hole, and the grinding head assembly is in clearance fit with the opening.

The cylinder barrel of the oil cylinder is connected to the upper surface of the supporting frame around the through hole through a flange.

Compared with the prior art, the invention provides the steel rail grinding head adopting the oil cylinder for lifting and guiding, an additional guiding mechanism is omitted, the oil cylinder drives the grinding head assembly to lift, and the piston rod of the oil cylinder is used for guiding the grinding head assembly to lift, so that the grinding head structure is simplified.

The invention has the beneficial effects that:

1. an additional guide mechanism is cancelled, and the oil cylinder for driving the grinding head to lift is directly used for guiding, so that the structure of the steel rail grinding head is simpler;

2. the piston rod of the oil cylinder and the cylinder body have excellent sealing performance, and can prevent dust and metal abrasive dust from entering; the oil cylinder is filled with oil, so that the lubricating performance is excellent, and the lifting resistance is low;

3. the two oil cylinders are adopted to drive the grinding head assembly to have good lifting stability, and the central connecting line of the bottom surfaces of the cylinder barrels of the two oil cylinders is inclined to the laying direction of the steel rail. When the central connecting line of the bottom surfaces of the cylinder barrels of the two oil cylinders is parallel to the laying direction of the steel rail, when the operation vehicle moves forwards for operation, the grinding head assembly moves forwards along with the operation vehicle, the resistance generated by the friction between the grinding wheel and the steel rail on the oil cylinder at the back is small, the resistance generated by the friction between the grinding wheel and the steel rail on the rear side of the sealing ring of the oil cylinder at the front is large, the sealing ring is easy to deform and break after long use, and the inside and outside deflection of the grinding head assembly also has the problems. In order to avoid the problems, the connecting line of the centers of the bottom surfaces of the cylinder barrels of the two oil cylinders is inclined to the laying direction of the steel rail, when the operation vehicle operates, the resistance generated by the friction of the grinding wheel and the steel rail is born by the two oil cylinders, and the sealing ring is not easy to deform and break.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

figure 3 is a schematic view of the grinding head assembly of the present invention;

FIG. 4 is a schematic diagram of a prior art configuration;

in the figure: 1. the grinding wheel device comprises a first oil cylinder, a second oil cylinder, a grinding head assembly, a first oil cylinder, a second grinding head assembly, a supporting frame, a motor, a first fixing seat, a second fixing seat, a grinding wheel mounting seat, a grinding wheel and a grinding wheel, wherein the first oil cylinder, the second oil cylinder, the third oil cylinder, the fourth oil cylinder, the fifth oil cylinder, the sixth oil cylinder, a grinding wheel mounting seat, 5, a motor, 6, a fixing seat, 7, a grinding wheel mounting seat, 8 and a grinding wheel.

Detailed Description

In fig. 1 and 2, an opening is formed in the middle of a support frame 4, a grinding head assembly 2 penetrates through the opening in the middle of the support frame 4, cylinder bodies of a first oil cylinder 1 and a second oil cylinder 3 are fixed on the support frame 4, and piston rods of the first oil cylinder 1 and the second oil cylinder 3 are connected with the grinding head assembly 2; the first oil cylinder 1 and the second oil cylinder 3 can drive the grinding head assembly 2 to lift in the opening in the middle of the support frame 4.

In fig. 3, the grinding head assembly 2 is composed of a motor 5, a fixed seat 6, a grinding wheel mounting seat 7 and a grinding wheel 8, the motor 5 is connected with piston rods of a first oil cylinder 1 and a second oil cylinder 3 through the fixed seat 6, a shaft of the motor 5 is positioned at the lower part of the fixed seat 6, and the grinding wheel 8 is arranged at the shaft end part of the motor 5 through the grinding wheel mounting seat 7.

Claims

1. A rail grinding head is characterized in that: comprises a grinding head assembly (2), a supporting frame (4) and a guide oil cylinder group for driving the grinding head assembly to lift, the guide oil cylinder group comprises two oil cylinders, the grinding head assembly (2) comprises a motor (5), a fixing seat (6) and a grinding wheel (8), a shell of the motor (5) is arranged on the fixing seat (6), a shaft of the motor (5) is positioned on the lower portion of the fixing seat (6), the grinding wheel (8) is arranged on the shaft end portion of the motor (5) through a grinding wheel mounting seat (7), a hole used for yielding the grinding head assembly (2) is formed in the middle of the support frame (4), the grinding head assembly (2) is arranged at the hole, through holes used for yielding oil cylinder piston rods are formed in the left side and the right side of the support frame (4), the oil cylinder barrel is positioned on the support frame (4), the lower end of the oil cylinder barrel is fixed at the through hole on the left side and the right side of the support frame (4), the oil cylinder piston rods penetrate through holes, and the end portions of the oil cylinder piston rods are connected with the fixing seat (6).

2. A rail grinding head according to claim 1, wherein: the axes of the two oil cylinder barrels are vertical to the upper surface of the support frame (4), and the central connecting line of the bottom surfaces of the two oil cylinder barrels is inclined to the laying direction of the steel rail.

3. A rail grinding head according to claim 1, wherein: the support frame (4) is of a square flat plate structure, and the two oil cylinders are arranged along the diagonal direction of the support frame (4).

4. A rail grinding head according to claim 1, wherein: and the piston rod of the oil cylinder is in clearance fit with the through hole, and the grinding head assembly (2) is in clearance fit with the opening.

5. A rail grinding head according to claim 1, wherein: the cylinder barrel of the oil cylinder is connected to the upper surface of the supporting frame around the through hole through a flange.