CN213360992U - Coal mining machine travelling wheel repaired by broken teeth - Google Patents

Abstract

The utility model relates to a prosthetic coal-winning machine walking wheel of broken teeth, including walking wheel base member and walking wheel teeth of a cogwheel module, the walking wheel base member is the part that the one end was equipped with the remaining behind the outer wheel teeth of a cogwheel of the former walking wheel disappearance teeth of the overhanging wheel hub of axial, the walking wheel teeth of a cogwheel module is according to former walking wheel modulus, the monomer part that contains the complete flank profile of single teeth of a cogwheel that profile of tooth and technical requirement processed out, the wheel teeth of a cogwheel disappearance position department is equipped with an axial extension on the walking wheel base member, narrow constant head tank in the radial outer width, constant head tank one end opening one end is sealed, the root of walking wheel teeth of a cogwheel module just imbeds in the constant head tank, it is. The utility model discloses enable the broken tooth trouble of the individual teeth of a cogwheel and the walking wheel that other parts homonymy is good continue to drop into operation, consequently prolong the life of walking wheel, reduce the coal-winning machine and use the maintenance cost.

Description

Coal mining machine travelling wheel repaired by broken teeth

Technical Field

The utility model relates to a through the prosthetic coal-winning machine walking wheel of broken tooth, be particularly useful for the relatively frequent occasion of walking wheel damage trouble that leads to of shearer drum cutter cutting hardness higher, coal quality and geological conditions, belong to the well worker and exploit mechanical technical field.

Background

The traction part of the roller coal mining machine transmits the output torque of the traction motor to the walking box through gear transmission. The walking box is an open-type transmission reduction box, wherein the walking wheel assembly is the last gear train in the transmission system of the walking box. The walking wheel assembly is an actuating mechanism for dragging and walking of the coal cutter, and the walking wheel on the walking wheel assembly and a pin rail on the scraper conveyor drive the coal cutter to advance in a gear-rack meshing mode. Because the engagement of the walking wheels and the pin rows is opened in the coal flow, the working condition is poor, each pin row only participates in the engagement twice in the process of mining a cutter from the machine head to the machine tail, and the walking wheels of the walking box of the coal mining machine are always in the engagement state; meanwhile, in order to meet geological conditions such as fluctuation of underground working surfaces, the pitch and the center distance in the meshing process of the pin row of the scraper conveyor and the walking wheel can fluctuate within a certain small range, so that the meshing condition of the walking wheel and the pin row is poor. Therefore, the travelling wheels are wearing parts on the coal mining machine.

The common damage form of the traveling wheels is that certain gear teeth are broken due to impact load or abnormal wear in the early service stage, and the like, the state of the rest parts of the traveling wheels in the damage form is good except for broken gear teeth in most cases, and the normal service life is not reached, however, the actual processing method of the traveling wheels in the damage form in the prior art is that the whole traveling wheels are scrapped, and the use and maintenance cost is correspondingly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a through the prosthetic coal-winning machine walking wheel of disconnected tooth, enable the disconnected tooth trouble of the individual teeth of a cogwheel and the good walking wheel of other part homomorphism continues to drop into operation, consequently prolongs the life of walking wheel, reduces the coal-winning machine and uses the maintenance cost.

The utility model discloses a main technical scheme has:

the utility model provides a prosthetic coal-winning machine walking wheel of disconnected tooth, includes walking wheel base member and walking wheel teeth of a cogwheel module, the walking wheel base member is the remaining part behind the missing teeth of a cogwheel of walking wheel, walking wheel teeth of a cogwheel module is the monomer part that contains the complete flank profile of single teeth of a cogwheel that processes out according to the modulus, profile of tooth and the technical requirement of corresponding walking wheel, walking wheel teeth of a cogwheel module demountable fixed mounting is in on the walking wheel base member and the teeth of a cogwheel.

Walking wheel base member one end is equipped with the overhanging wheel hub of axial, the wheel teeth of a cogwheel disappearance position is equipped with narrow constant head tank in axial extension, the radial outer width on the walking wheel base member, the groove top of constant head tank is located the root circle of corresponding walking wheel, constant head tank one end opening one end is sealed, and constant head tank axial length equals the tooth width of corresponding walking wheel, the root of walking wheel teeth of a cogwheel module just imbeds in the constant head tank, rely on the both sides cell wall of constant head tank to realize circumferential location, the wheel teeth of a cogwheel module of walking wheel is fixed through the axial screw of wearing of root of walking wheel teeth of a cogwheel module with the walking wheel base member.

The blind end of constant head tank is equipped with axial extension and endocentric pinhole and screw hole, the root of walking wheel teeth of a cogwheel module is equipped with axial extension's the pinhole of taking the counter bore, under the mounted state the screw hole with the pinhole is coaxial, through between walking wheel teeth of a cogwheel module and the walking wheel base member set up external screw thread locating pin location and connection in screw hole and the pinhole.

And a locking washer is preferably arranged between the countersunk head of the external thread positioning pin and the walking wheel base body.

The height of the root of the walking wheel gear tooth module is at least 1.2 times of the modulus of the corresponding walking wheel, the central angle corresponding to the root of the walking wheel gear tooth module is at least 180/Z +5 degrees, and Z is the tooth number of the corresponding walking wheel.

Before assembly, thread loosening-preventing glue can be smeared on the thread section of the external thread positioning pin, and in an assembly state, spot welding treatment can be carried out between the countersunk head screw head end of the external thread positioning pin and the traveling wheel base body.

The positioning groove can be independently subjected to quenching treatment, and the walking wheel tooth module is integrally subjected to carburizing and quenching treatment.

The tooth profile curve of the corresponding travelling wheel can be an involute curve, a cycloid curve or an involute and cycloid composite curve.

The corresponding road wheel module can be m39.79, m46.79, m48.06, m54.75 or m 56.02.

The utility model has the advantages that:

the utility model discloses a wheel teeth position processing constant head tank that fracture or damage on walking wheel base member to wherein the installation is processed according to the modulus, profile of tooth and the technical requirement of former walking wheel and is come out containing the integral profile of single wheel teeth of a cogwheel, forms the walking wheel after the restoration that the structure is complete and the performance accords with former walking wheel requirement, reaches the damage wheel teeth of a cogwheel restoration purpose. The repairing mode is very suitable for a walking wheel in the coal mining industry, namely a gear in low-speed heavy-load non-conjugate meshing. The problem of the walking wheel scrap whole walking wheel because of the damage of individual teeth of a cogwheel or wearing and tearing is solved, the utilization ratio of walking wheel base member has greatly been improved, accord with the requirement of the green environmental protection utilization of contemporary equipment.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a schematic structural view of the road wheel tooth module shown in fig. 1;

fig. 4 is a schematic structural view of the traveling wheel base body in fig. 1.

Reference numerals:

1. a traveling wheel tooth module; 2. a traveling wheel base body; 2-1, a hub; 2-2, positioning a groove; 3. an external thread positioning pin; 4. a lock washer.

Detailed Description

The utility model discloses a prosthetic coal-winning machine walking wheel of broken teeth, as shown in fig. 1-4, including walking wheel base member 2 and walking wheel teeth of a cogwheel module 1, the walking wheel base member is the remaining part behind the missing teeth of a cogwheel of walking wheel, walking wheel teeth of a cogwheel module is the monomer part that contains the complete flank profile of single teeth of a cogwheel that processing was come out according to modulus, profile of tooth and the technical requirement of corresponding walking wheel (the former walking wheel before damaging promptly), fixed mounting can be dismantled to walking wheel teeth of a cogwheel module and the teeth of a cogwheel that replaces the disappearance on the.

The position and the number of gear loss on the walking wheel base body are not limited, and the walking wheel gear module can replace any one gear on the corresponding walking wheel. The walking wheel with only individual damaged gear teeth and the other good gear teeth can be repaired into the walking wheel structure, so that the service life of the walking wheel is prolonged, and the cost is reduced.

The original traveling wheel is an integrated traveling wheel with one end provided with an axially outward extending hub 2-1. Therefore, one end of the traveling wheel base body is provided with a hub which extends outwards in the axial direction. During repair, the radial outer surface of the missing position of the gear teeth on the walking wheel base body is trimmed to the root circle, then a positioning groove 2-2 which extends axially and is radially wide outwards and narrow inwards is arranged on the radial outer surface, and the groove top of the positioning groove is equivalent to the root circle of the corresponding walking wheel. One end of the positioning groove is open and the other end is closed, and the axial length of the positioning groove is equal to the tooth width of the corresponding travelling wheel. The root of walking wheel teeth of a cogwheel module just imbeds in the constant head tank, rely on the both sides plane cell wall of constant head tank to realize circumferential direction location. The root of the walking wheel tooth module is tightly matched with the groove walls at two sides of the positioning groove. The walking wheel teeth module and the walking wheel base body are axially fixed through a screw at the root of the walking wheel teeth module, namely the walking wheel teeth module is fixed on the wheel hub. The complete gear tooth profile of the traveling wheel gear tooth module is positioned above the root. From the axial visual angle, the constant head tank with walking wheel teeth of a cogwheel module is bilateral symmetry structure, and the central axis of symmetry central plane through corresponding walking wheel.

The blind end of constant head tank is preferred to be set up axial extension and endocentric pinhole and screw hole, the root of walking wheel teeth of a cogwheel module is equipped with axial extension's pinhole of taking the counter bore, under the mounted state the screw hole is coaxial with the pinhole, pass through between walking wheel teeth of a cogwheel module and the walking wheel base member set up 3 location and connection of external screw thread locating pin in screw hole and the pinhole. The outer diameter of the hub is preferably close to the root circle diameter of the respective road wheel.

A locking washer 4 can be arranged between the countersunk head of the external thread positioning pin and the walking wheel base body, so that the connection reliability is improved.

The physical radial dimension a of the root of the walking wheel gear tooth module is at least 1.2 times of the corresponding walking wheel module. The circle center angle alpha corresponding to the entity of the root of the walking wheel gear tooth module is at least [ (180/Z) +5] °, wherein Z is the number of teeth of the corresponding walking wheel. The central angles corresponding to the groove walls on the two sides of the positioning groove are equal to the central angle of the root of the walking wheel tooth module, so that the structural strength is ensured.

The shearing strength of the external thread positioning pin between the walking wheel gear module and the walking wheel base body at least reaches one fourth of the original gear capable of bearing traction force so as to ensure the shearing strength.

Before assembly, the thread section of the external thread positioning pin can be coated with thread anti-loosening glue. When necessary, after the external thread positioning pin is fastened in place, spot welding treatment can be carried out between the countersunk head screw head end of the external thread positioning pin and the walking wheel base body.

The positioning groove and the positioning pin hole on the walking wheel base body can be independently quenched. The walking wheel gear tooth module is preferably subjected to integral carburizing and quenching treatment to improve strength, and the depth of a carburized layer can be larger than that of a carburized layer of the corresponding walking wheel gear tooth. The pin section of the external thread positioning pin can be carburized and quenched.

Through the design of the structure and the technical requirements, the walking wheel base body is reliably connected with the walking wheel tooth module, the complete walking wheel is repaired, and the repaired walking wheel is ensured to achieve structural strength, shearing strength, wear resistance and the like which are not lower than those of the original walking wheel.

The tooth profile curve of the wheel tooth of the corresponding travelling wheel can be an involute curve, a cycloid curve or an involute and cycloid composite curve and other curves, and the coal mining machine travelling wheel repaired by the broken tooth is suitable for a chainless traction transmission system formed by a low-speed non-conjugate transmission travelling wheel and a pin rail of a coal mining machine.

The corresponding road wheel module can be m39.79, m46.79, m48.06, m54.75 or m 56.02.

The coal mining machine walking wheel repaired by the broken teeth is suitable for walking wheel assemblies of the following two structures: the walking wheel assembly is used for transmitting torque between the walking wheel and the large gear through a spline, and the walking wheel assembly is used for transmitting torque between the walking wheel and the large gear through the positioning pin.

Claims (11)

1. The utility model provides a coal-winning machine walking wheel through broken tooth is restoreed which characterized in that: including walking wheel base member and walking wheel teeth of a cogwheel module, the walking wheel base member is the remaining part behind the walking wheel disappearance teeth of a cogwheel, the walking wheel teeth of a cogwheel module is the complete profile of the single piece that contains of the single teeth of a cogwheel that processes out according to the modulus, profile of tooth and the technical requirement of corresponding walking wheel, fixed mounting can be dismantled to the walking wheel teeth of a cogwheel module and one-to-one replaces the teeth of a cogwheel of disappearance on the walking wheel base.

2. The coal cutter road wheel repaired by broken teeth as set forth in claim 1, characterized in that: the utility model discloses a walking wheel, including walking wheel tooth module, wheel base member one end is the overhanging wheel hub of axial, the wheel tooth disappearance position sets up the narrow constant head tank in axial extension, radial outer width on the walking wheel base member, the groove top of constant head tank is located the root circle of corresponding walking wheel, constant head tank one end opening one end is sealed, and constant head tank axial length equals the tooth width of corresponding walking wheel, the root of walking wheel tooth module just imbeds in the constant head tank, rely on the both sides cell wall of constant head tank to realize circumferential location, the walking wheel tooth module is worn the fix with screw through the root axial of walking wheel tooth module with the walking wheel base.

3. The coal cutter road wheel repaired by broken teeth as set forth in claim 2, characterized in that: the blind end of constant head tank is equipped with axial extension and endocentric pinhole and screw hole, the root of walking wheel teeth of a cogwheel module is equipped with axial extension's the pinhole of taking the counter bore, under the mounted state the screw hole with the pinhole is coaxial, through between walking wheel teeth of a cogwheel module and the walking wheel base member set up external screw thread locating pin location and connection in screw hole and the pinhole.

4. The coal cutter road wheel repaired by broken teeth as set forth in claim 3, characterized in that: and a locking washer is arranged between the countersunk head of the external thread positioning pin and the walking wheel base body.

5. The coal cutter road wheel repaired through broken teeth as set forth in claim 3 or 4, characterized in that: the height of the root of the walking wheel gear tooth module is at least 1.2 times of the modulus of the corresponding walking wheel, the central angle corresponding to the root of the walking wheel gear tooth module is at least 180/Z +5 degrees, and Z is the tooth number of the corresponding walking wheel.

6. The coal cutter road wheel repaired through broken teeth as set forth in claim 3 or 4, characterized in that: before assembly, thread loosening-preventing glue is coated on the thread section of the external thread positioning pin, and in an assembly state, the countersunk head screw head end of the external thread positioning pin and the traveling wheel base body are subjected to spot welding.

7. The shearer traveling wheel repaired by broken teeth as set forth in claim 2, 3 or 4, characterized in that: the locating groove is subjected to quenching treatment, and the whole walking wheel tooth module is subjected to carburizing and quenching treatment.

8. The coal cutter road wheel repaired through broken teeth as set forth in claim 3 or 4, characterized in that: the locating groove with the pinhole on the walking wheel base member is through quenching treatment, walking wheel teeth of a cogwheel module is whole through carburization quenching treatment, the pin section of external screw thread locating pin is through carburization quenching treatment.

9. The shearer traveling wheel repaired by broken teeth as set forth in claim 1, 2, 3 or 4, characterized in that: the tooth profile curve of the corresponding travelling wheel is an involute curve, a cycloid curve or an involute and cycloid composite curve.

10. The shearer traveling wheel repaired by broken teeth as set forth in claim 1, 2, 3 or 4, characterized in that: the corresponding road wheel module is m39.79, m46.79, m48.06, m54.75 or m 56.02.

11. The coal cutter road wheel repaired by broken teeth as set forth in claim 5, characterized in that: before assembly, thread loosening-preventing glue is coated on the thread section of the external thread positioning pin, and in an assembly state, the countersunk head screw head end of the external thread positioning pin and the traveling wheel base body are subjected to spot welding.

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