Header cutter

FIELD: process engineering.

SUBSTANCE: invention relates to continuous-operation headers. Header cutter comprises support element, extensible cutting head arranged at support element front end with central main part and at least one extensible drum part arranged at butting head end outside in axial direction from said cutting head main part. Extensible drum part has axial inner end abutting on cutting head main part. Axial outer end comprises inner end structure secured to cutting head main part and outer cylinder secured thereto. Inner cylinder secured to said inner end structure is located inside outer cylinder and aligned therewith. Extensible cylinder has inner circular expanded end with the part located between said inner and outer cylinders. End cover has ledge accommodating inner cylinder outer end aligned therewith. First and second spaces are formed between said cylinders. When fluid flows through said spaces extensible cylinder displaces to pulled or pushed position.

EFFECT: drum part that features extension and locking forces higher than those in usual cutting heads.

3 cl, 6 dwg

 

The technical FIELD

This invention relates to an electric machine with continuous action and, more specifically, to an electric machine with continuous action, containing the drum element with an extension end parts. This invention is directed to a tool extension, retraction and retention of the extension cord reel electric machine in its extended position.

BACKGROUND of the INVENTION

Device : continuous development of the field whose type contemplated in this invention, the cutting head can be used to separate the material from the reservoir field with the establishment of a corridor in the mine workings or space to which the device is moving and continues to further develop the field. The cutting head is mounted to rotate on a movable base with providing variations in the vertical plane between the roof framing and bedrock and contains a rotating drum located on a horizontal transverse axis and containing the teeth or cutting edges that separate breed and displace it. This device also contains the usual boot head which is used to collect the liberated breed on underlying rocks, develop and move it back inside and to the front in the direction of travel of the receiving parts of the TRANS is ortherwise means of this device. The rotating drum has end portions that can be selectively extended or drawn respectively to separate breed from the edges and corners of the corridor development and reducing the effective length of the cutting head to provide clearance on the sides of the head.

As shown in figure 1, the electric machine is a continuous action, indicated generally by the number 10 position, can take various forms, however, for illustrative purposes, in this case, it comprises a base 14 on tracks, the support frame 16, on the front end which can be rotated installed going forward bracket or supporting element 18 located with the possibility to perform swing up and down between the roof and bedrock excavation. Elongated electric head 24 passes across the support element 18 and rotatably attached to its front end. Electric head or cutting head 24 mounted for rotation with the motor around its longitudinal axis X-X. On the front end of the frame 16 can be rotated are the normal boot head 26 going forward from this end of the frame beneath the supporting member 18 and containing performs oscillatory motion racking up the legs 28, which are designed for cooperation with developing the breed and move it n the ass and inside to the known transporting means 30 electric machine. To swing the support element 18 in a vertical plane about the axis of rotation and tilt the boot of the head 26 relative to the horizontal axis are the average hydraulic jacks (not shown).

Elongated electric head 24 is driven by a pair of motors 34. As shown, the motors 34 are located on the same axis at a distance from each other and are generally parallel to the node 24. The motors 34 are located respectively on opposite sides of the support element 18.

The drive motors 34 rotatably drives the shaft 36 of the cutting head, which runs parallel to the longitudinal axis of the head 24 with the accession is supported rotatably by a tubular extension 38 of the housing of the gear mechanism, which is also parallel to the longitudinal axis of the head. The gear drive mechanism for electric head may be such as shown in any of U.S. patent No. 3617093 and No. 3695725, or have other regular structure.

As described hereinafter, the shaft 36 rotatably drives the continuous hinge cutting chain 48 type endless circulating belt, hollow cylindrical rotary drum cutting head 50 and the extension portion 52 of these cutting heads, which contain cylindrical portion 66 and with the possibility of actiongo slip placed in the ends of the respective heads 50. Part 52 are selective extension of these end parts and retracting them hydraulically. The machine operator can selectively advance or retract the extension portion by means of a hydraulic control system.

Examples of conventional extension means reel cutting unit electric machine shown in U.S. patent No. 4489985 and No. 3516712.

In U.S. patent No. 4489985, as can be seen in figure 2 and 3, the shaft 36 of the head actuates the outer peripheral element 60 of the cutting head 24 by means of the drive ring 72, which is engaged with spaced around the periphery of the pins 74. The outer peripheral element 60 is supported on the extension 38 of the housing with a bearing 76 and other internal bearings (not shown).

The internal diameter of the extension end portions 52 of the hollow cylindrical rotating drum exceeds the outer diameter of the cutting head 60, and these parts 52 rotatably driven through the head 60. As shown in figure 2 and 3 spaced around the periphery of the pins 82 have inner ends permanently attached to the outer peripheral portion of the head 60. Accordingly, the head 60 actuates the front-end part 52 by means of pins 82 included in the connection with the corresponding one of the interacting keyed tongue is in element 52. The pins 82 and the keyways 84 spaced in the circumferential direction along the inner periphery of the cylinder 52. The above drive device that contains keys and the keyways, additionally enables the reciprocating axial movement of the end portions 52 relative to the cutting head 60 by axial sliding of the interaction that takes place, respectively, between the pins 82 and keyways 84.

The hydraulic cylinder 90 together with its piston rod 92 performs the extension end portions 52. The rod 92 is firmly attached to the plate 94 which is slidable mounted in the inner channel of the cylinder 66 of the end portion 52. Circular drive ring 96 fixed to the inner channel of the cylinder 66 to move with him. Drive ring 96 on the outer circular surface has openings 99 to the outer annular surfaces which accommodate bolts 98, one end of which is connected a threaded connection with the piston 94 to move with him, and the other end attached firmly screwed to release the latch element 100. Holes 99, located on the drive ring 96 have a diameter slightly greater than the diameter of the bolt 98, to provide sliding bolts 98 through them. Consequently, the piston I element 100 is moved in the form of a single node in the direction of the longitudinal axis X-X.

As best seen in figure 2, at least one blocking element 102 can be rotated installed on the mounting ring 104, which is firmly attached to the shaft 36 of the head with providing rotation together with him.

In U.S. patent No. 3516712 describes the electric machine with a sliding head having a spring return mechanism. Means for extension retractable head is a hydraulic cylinder. More specifically, as shown in figure 4, a shaft 87 that passes axially through electric head 13. End portion 70 electric head contains a retractable cylindrical part 71, slidable mounted on the shaft 87 by means of pins 88, located in the keyway groove 89. Sliding sleeve 90 is attached to the outer end of the shaft 87, and the mated inner cylinder 91 slidable connected with a sliding sleeve 90 with the creation of the sealing connection. The inner cylinder 91 via a shaft 87 passes the channel 92. The working fluid is fed through the channel 92 in the inner cylinder 91 to move the sliding of the cylindrical part 71 and the end portion 70 electric head toward the outside relative to the shaft 87.

Between the outer part 65 electric head and retractable cylindrical portion 71 is a coil spring 93. To the outer end 65 of the electric head is rtraline ring 94, adjacent to one end of the spring 93, and the inner end of the sliding cylindrical portion 71 is attached to the ring 95, adjacent to the other end of the spring 93. When the end portion 70 of the head in its extended position, as shown in figure 4, the spring 93 is compressed between the rings 94, 95, while the end portion 70 of the head is held in its retracted position, the working fluid medium located in the inner cylinder 91. Retraction of the end portion 70 of the head is accomplished by release of the working fluid from the inner cylinder 91, while the force of the spring 93 is located between the rings 94, 95, removes retractable cylindrical part along the shaft 87 in the outer part 65 electric head.

The INVENTION

The purpose of this invention is to provide an extension drum parts, improved compared to the extension part, available in the above-described cutting heads. In conventional cutting heads of the forces, providing extension and blocking extension drum parts, sometimes inadequate, as a result, the machine operators have to weld an extension drum parts in their extended position. The purpose of this invention is to provide an extension of the drum part, in which the sliding force and the force of the block more than a normal cutting Golo the hands. More specifically, the efforts of the nominating and blocking in the proposed drum have values that are four times higher than the value of the efforts that are usual cutting heads.

The present invention offers an improved electric machine of continuous operation, which comprises an elongated housing portion, mounted on the means supporting the promotion of this part. To this hull is attached with the possibility of rotation of the supporting element, passing from her forward. On the front end of the support element mounted elongated electric head is located with the opportunity to drive rotation around its longitudinal axis. The head contains the extension drum parts made with the possibility of extending and retracting in the axial direction.

Extension reel part contains internal mechanical structure attached to the main body of the cutting head, and an outer cylinder attached to the inner end of the structure. Extension reel part also contains an inner cylinder attached to the inner end structure having an outer surface and located coaxially with the outer cylinder inside it, but at a distance from the specified outer cylinder. Extension reel part also contains deducing the second cylinder, which has an internal circular extended end and part of which is placed between the inner and outer cylinders. Between the inner end design and advanced end of the retractable cylinder formed by the first space. Extension reel part also contains an end cap having a protrusion, which is coaxial with it is the outer end of the inner cylinder, and between the specified protrusion of the end cap and the outer cylinder is specified, the extended end of the sliding cylinder. Between the inner cylinder and retractable cylinder and between the specified advanced end of the sliding cylinder and the specified protrusion of the end cap is formed of the second space, so that when fluid flows into the first space and out of the second space, the sliding cylinder is moved into the extended position, and when the working fluid flows into the second space, and exits the first space, the sliding cylinder is moved in stenothoe position.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 depicts a partial top view of the electric machine.

Figure 2 depicts an enlarged view of the known main body of the transfer mechanism of the cutting head on which the locking mechanism shown in a locked position; and

Figure 3 depicts the HC is licheny view of half of the cutting head, shown in figure 2, in which the locking mechanism shown in the release position, and the strip is pulled in.

Figure 4 depicts a section of one end of the known cutting head.

Figure 5 depicts a cut one end of the cutting head in accordance with this invention, on which the drum extension portion shown in retracted.

6 depicts a cut one end of the cutting head in accordance with this invention, on which the drum extension portion is shown in its extended position.

DETAILED description of the INVENTION

Figure 5 and 6 shows the cutting part 200 electric machine in accordance with this invention, and if such elements are shown in figures 1 and 2, you should refer to these drawings.

The cutting part 200 electric machine includes a support element 18, an elongated cutting head 204 installed on the front in the direction of travel of the machine the end of the support element is rotatably driven by a motor around its longitudinal axis. Cutting head 204 includes a centrally located main portion 50 and at least one drum extension portion 208 located on the side of the head 204 in the axial direction and retractable in the outer direction from the main portion 50 of the cutting head. Extension portion 208 is configured to move in the axial is upravlenii along the longitudinal axis of venutolo position into the extended position relative to the main portion 50 of the cutting head. More specifically, the extension portion 208 includes an annular hydraulic cylinder, which is designed to selectively extending and retracting the extension portion 208.

Extension portion 208 has an axial inner end located adjacent to the main part 50 of the cutting head, and an axial outer end, with an extension portion 208 has an internal mechanical structure 212 that is attached to the main body 50 of the cutting head. Extension portion 208 also includes an outer cylinder 216 attached to the inner end structure 212, and the inner cylinder 220, also attached to the inner end structure 212. The inner cylinder 220 also has an outer surface 224 that is located coaxially with the outer cylinder 216 and placed in the cylinder 216, but is located at a distance from him. The inner cylinder 220 is also configured to attach (not shown) to the outer cutting head 60, and the cylinder 66, as shown in figure 2 and 3.

Extension portion 208 also includes a retractable cylinder 228 and the end cap 230. Retractable cylinder 228 has an inner circular extended end 232, with retractable cylinder 228 is placed between the inner cylinder 220 and the outer cylinder 216. Advanced end 232 includes seals and bearings providing for movement of the sliding wydajno what about the cylinder 228 between the inner and outer cylinders. Between the inner end structure 212 and the advanced end 232 retractable cylinder 228 is limited to the first space 218.

End cover 230 is passing through the axis of the protrusion 236 in which is coaxially outer end of the inner cylinder 220, and an extended end 232 retractable cylinder placed between the lip 236 of the end cap and the outer cylinder 216. The protrusion 236 contains the seals and bearings, providing for sliding movement of a sliding cylinder 228 between the protrusion 236 and the outer cylinder 216. Between the inner cylinder 220 and retractable cylinder 228 and between the enlarged end 232 of the sliding cylinder and the protrusion 236 of the end cap is limited to the second space 240, so that when fluid flows into the first space 218 and exits from the second space 240, the retractable cylinder 228 is moved into the extended position, and when the working fluid flows into the second space 240 and exits the first space 218, retractable cylinder 228 is moved in stenothoe position.

The inner cylinder 220 is providing the extension channel 244 passing through the inner cylinder 220 and communicated with the first space 218, and providing retraction of the channel 248, passing through the inner cylinder 220 and communicated with the second space 240. The normal location of the channels not shown) through an elongated cutting head 204 provides selective admission of fluid under pressure into the channels 244 or 248 for extending or retracting the extension portion 208.

Various other properties of the present invention set forth in the following claims.

1. The cutter electric machine that contains
supporting element,
extendable cutting head mounted on the front end of the support element with the possibility of driving the rotation around the longitudinal axis and containing
centrally located to the main part and
at least one extension reel part located at the end of the cutting head outside in the axial direction from the specified main part of the cutting head and arranged to move in the axial direction along a specified longitudinal axis of venutolo position into the extended position relative to the specified main part of the cutting head, with the specified extension drum part has an axial inner end located adjacent to the main part of the cutting head, and an axial outer end and contains
internal mechanical structure attached to the main body of the cutting head,
the outer cylinder attached to the said inner end design
the inner cylinder attached to the specified internal mechanical structure having an outer surface and located coaxially with the outer cylinder inside it, but at a distance from the specified outer cylinder
wydajno the cylinder, which has an internal circular extended end and part of which is placed between the inner and outer cylinders, so that between the inner end design and advanced end of the retractable cylinder formed by the first space, and
the end cap having a protrusion, which is coaxial with it is the outer end of the inner cylinder, and between the specified protrusion of the end cap and the outer cylinder is specified, the extended end of the sliding cylinder, and between the inner cylinder and retractable cylinder and between the specified advanced end of the sliding cylinder and the specified protrusion of the end cap is formed of the second space, so that when fluid flows into the first space and out of the second space, the sliding cylinder is moved into the extended position, and when the working fluid flows into the second space, and exits the first space, the sliding cylinder is moved in stenothoe position.

2. The saw device according to claim 1, in which the inner cylinder is providing the extension channel passing through the specified cylinder and communicated with the first space.

3. The saw device according to claim 1, in which the inner cylinder is providing retraction of the channel passing through the specified cylinder and reported what about the second space.



 

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