CN210195788U - Comprehensive mechanical tunneling inner telescopic top beam - Google Patents
Comprehensive mechanical tunneling inner telescopic top beam Download PDFInfo
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- CN210195788U CN210195788U CN201920882002.6U CN201920882002U CN210195788U CN 210195788 U CN210195788 U CN 210195788U CN 201920882002 U CN201920882002 U CN 201920882002U CN 210195788 U CN210195788 U CN 210195788U
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- top beam
- support
- inner telescopic
- telescopic top
- hydraulic cylinder
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Abstract
An inner telescopic top beam for comprehensive mechanical tunneling comprises a main bracket and an inner telescopic top beam which is telescopically arranged in front of the main bracket; the inner telescopic top beam comprises a support top beam, a hydraulic support upright post, a support bottom plate and an inner telescopic side guard plate; the support top beam is fixedly arranged above the hydraulic support upright post, the bottom of the hydraulic support upright post is fixedly arranged on the support bottom plate, and the support top beam is vertically stretched under the action of the hydraulic support upright post; the inward-shrinkage type side guard plates are inserted at two sides of the supporting top beam and horizontally extend and retract under the action of the side guard beam hydraulic cylinder. This retractable back timber in comprehensive mechanized tunnelling, the retractable back timber is established to the retractable, and the top is equipped with retractable side guard plate, and the extension and the shrink of the retractable side guard plate are controlled under the effect of side guard beam pneumatic cylinder, can in time strut the tunnel roof that exposes when the entry driving machine cuts.
Description
Technical Field
The utility model belongs to the technical field of colliery is combined in the pit and is dug face temporary support, in particular to flexible back timber in comprehensive mechanized tunnelling.
Background
In the tunneling construction of a working face roadway under a coal mine, a cantilever type tunneling machine and a single anchor rod drilling machine are generally adopted to be matched with each other, the operation process of 'one tunneling and one anchoring' must be strictly executed in the construction, the offset distance needs to be shortened, the comprehensive tunneling machine is frequently driven in and out, the driving rate is low, workers need to carry the single anchor rod drilling machine back and forth, and the net laying mainly depends on the workers to step on the escalator to support the anchor net for laying, so that the method not only occupies more personnel, has long auxiliary operation time, low tunneling efficiency and single water inlet level difference, but also has high labor intensity and poor operation safety.
In the operation process of one digging and one anchoring, two support modes of a hanging ring (U-shaped clamp) string beam and a support and a cross beam are commonly used, and the two support modes have potential safety hazards of high operation difficulty, low support strength, poor safety and reliability, anchoring operation in an empty roof area and the like. Part coal mines adopt the onboard temporary support device of the cantilever type heading machine to replace two support forms of a hanging ring (U-shaped clamp) string beam and a support and a cross beam, but the onboard temporary support device has the defects of small supporting force and roof protection area, shielding of sight of an operation driver of the heading machine and the like, is small in applicable roadway height range and cannot be used under the condition of roof breakage, and the improvement of heading efficiency is restricted when the onboard temporary support device is used for supporting working procedures.
The Chinese invention patent 'a self-moving advanced temporary support hydraulic support for fully mechanized excavation' (patent number: CN201510138169.8) discloses a self-moving advanced temporary support hydraulic support for fully mechanized excavation, which comprises an advanced support and a transition support; the forepoling support is provided with two sections of telescopic beams and a cantilever beam, so that forepoling can be realized; the transition support is connected behind the forepoling support and can be lifted and lowered to push the forepoling support to move forwards, so that the self-movement of the support group is realized; the hydraulic support has high automation and mechanization degrees, can realize self-moving self-adjustment, and circularly carries out fully-mechanized excavation advance support; the operation of the support group is controlled by a hydraulic system, and automation and mechanization of the support group are realized through system setting, so that the safety, reliability and tunneling speed during tunneling are improved.
The invention discloses a rapid tunneling fore support (patent number: CN201410475830.X), which solves the safety problem of the prior fore support of a tunneling working face and comprises an inner side support group and an outer side support group, wherein the inner side support group and the outer side support group respectively comprise a left support and a right support, the left support and the right support of the inner side support group are arranged at the inner sides of the left support and the right support of the outer side support group, cross beams and longitudinal beams of the inner side support group and the outer side support group are alternately arranged, cantilever beams are arranged at the front ends of the longitudinal beams of the inner side support group, push-pull oil cylinders are respectively arranged on a left base and a right base of the inner support group and the outer support group and on the cross beams, a height difference is formed between the top of the cross beams and the bottom of the longitudinal beams of the support. The invention can realize full-section active supporting of the roof easily and timely, and is beneficial to the safety management of the roof of the mine.
Although the two support structures can realize the self-movement of the support and circularly carry out the comprehensive tunneling advance support, the equipment still needs to be stepped on the escalator by workers during the net laying process, and the hand-supported anchor net is laid, so that the occupied personnel are large, the auxiliary operation time is long, the operation safety of the operators is poor, and the tunneling efficiency is low.
Disclosure of Invention
The utility model aims at the not enough of above-mentioned prior art, provide a comprehensive mechanized tunnelling internal stretching back timber, realize carrying out advance support to the new roof that exposes of entry process of entry machine through the internal stretching back timber.
In order to solve the technical problems, the invention adopts the technical scheme that:
an inner telescopic top beam for comprehensive mechanical tunneling comprises a main bracket and an inner telescopic top beam which is telescopically arranged in front of the main bracket;
the inner telescopic top beam comprises a support top beam, a hydraulic support upright post, a support bottom plate and an inner telescopic side guard plate;
the support top beam is fixedly arranged above the hydraulic support upright post, the bottom of the hydraulic support upright post is fixedly arranged on the support bottom plate, and the support top beam is vertically stretched under the action of the hydraulic support upright post;
the inward-shrinkage type side guard plates are inserted at two sides of the supporting top beam and horizontally extend and retract under the action of the side guard beam hydraulic cylinder.
The inner telescopic top beam comprises a first-stage inner telescopic top beam and a second-stage inner telescopic top beam;
the second-stage inner telescopic top beam and the first-stage inner telescopic top beam are sequentially arranged at the front end part of the main support from front to back, are telescopically connected to the inner side of the first-stage inner telescopic top beam and are connected with the first-stage inner telescopic top beam in a telescopic control mode through a second bottom hydraulic cylinder;
the first-stage inner telescopic top beam is telescopically connected to the inner side of the main support and is connected with the main support in a telescopic control mode through a first bottom hydraulic cylinder arranged on the main support base.
The tail end part of the first bottom hydraulic cylinder is fixedly arranged on the base of the main bracket, and the head end part of the first bottom hydraulic cylinder is connected with the rear end part of the supporting bottom plate of the first-stage inner telescopic top beam;
the tail end part of the second bottom hydraulic cylinder is fixedly arranged on the supporting bottom plate of the first-stage inner telescopic top beam, and the head end part of the second bottom hydraulic cylinder is connected with the rear end part of the supporting bottom plate of the second-stage inner telescopic top beam.
The side guard beam hydraulic cylinder is a side guard beam jack.
The utility model has the advantages that:
(1) this retractable back timber in comprehensive mechanized tunnelling, the retractable back timber is established to the retractable, and the top is equipped with retractable side guard plate, and the extension and the shrink of the retractable side guard plate are controlled under the effect of side guard beam pneumatic cylinder, can in time strut the tunnel roof that exposes when the entry driving machine cuts.
(2) The inner telescopic top beam is set into a first-stage inner telescopic top beam and a second-stage inner telescopic top beam, the second-stage inner telescopic top beam can be retracted to the inner side of the first-stage inner telescopic top beam, the structural arrangement is more reasonable, and the tunneling efficiency of a roadway is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
figure 2 is a partial schematic view of a forepoling assembly.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The utility model provides a comprehensive mechanical tunneling inner telescopic top beam, as shown in figure 1.
An inner telescopic top beam for comprehensive mechanical tunneling comprises a main support 1 and an inner telescopic top beam arranged in front of the main support 1 in a telescopic mode. The inner telescoping top beam comprises a support top beam 451, a hydraulic support column 452, a support floor 453, and an inner telescoping skirt 454; the supporting top beam 451 is fixedly arranged above the hydraulic supporting upright column 452, the bottom of the hydraulic supporting upright column 452 is fixedly arranged on the supporting bottom plate 453, and the supporting top beam 451 extends and retracts vertically under the action of the hydraulic supporting upright column 452; the retractable side guard plates 454 are inserted on the left side and the right side of the supporting top beam 451 and horizontally extend and retract under the action of the side guard beam hydraulic cylinders 455, preferably, the side guard beam hydraulic cylinders 455 adopt side guard beam jacks to control the extension and retraction of the retractable side guard plates 454, so that the roof newly exposed in the cutting process of the heading machine can be timely supported.
In this embodiment, the inner telescopic top beams include a primary inner telescopic top beam 4 and a secondary inner telescopic top beam 5. The secondary inner telescopic top beam 5 and the primary inner telescopic top beam 4 are sequentially arranged at the front end part of the main bracket 1 from front to back, and the secondary inner telescopic top beam 5 is telescopically arranged at the inner side of the primary inner telescopic top beam 4 and is telescopically controlled and connected with the primary inner telescopic top beam 4 through a second bottom hydraulic cylinder 63; the first-stage inner telescopic top beam 4 is telescopically connected to the inner side of the main support 1 and is connected with the main support 1 in a telescopic control mode through a first bottom hydraulic cylinder 62 arranged on a base of the main support.
In this embodiment, the tail end of the first bottom hydraulic cylinder 62 is fixedly arranged on the base of the main support 1, and the head end of the first bottom hydraulic cylinder 62 is connected with the rear end of the support bottom plate of the first-stage inner telescopic top beam 4; the tail end of the second bottom hydraulic cylinder 63 is fixedly arranged on the supporting bottom plate of the first-stage inner telescopic top beam 4, and the head end of the second bottom hydraulic cylinder 63 is connected with the rear end of the supporting bottom plate of the second-stage inner telescopic top beam 5.
The comprehensive mechanized excavation inner telescopic top beam can also be used for a comprehensive mechanized excavation rapid advance support unit, as shown in fig. 1 and 2, the comprehensive mechanized excavation rapid advance support unit further comprises: the device comprises a main support 1, an auxiliary support 2 and a working platform 3, wherein the auxiliary support 2 is arranged at the rear end of the main support 1 and is connected with the main support 1 through a pushing hydraulic cylinder 61, and the working platform 3 can be lifted and arranged on the inner side of the main support 1 and below the main support 1.
The main bracket 1 and the auxiliary bracket 2 both comprise a top guard plate 121, a lifting upright 122 and a base 123, and a scissor arm lever group 6 is arranged between the top guard plate 121 and the base 123.
The work platform 3 includes a platform body 31, a vertical pillar 32, and a horizontal hydraulic cylinder, and in this embodiment, the horizontal hydraulic cylinder includes a first horizontal hydraulic cylinder 331 and a second horizontal hydraulic cylinder 332. The platform body 31 is a multi-stage supporting platform arranged along the tunneling direction and stretches along the tunneling direction under the action of the horizontal hydraulic cylinder, in the embodiment, the multi-stage supporting platform is a secondary supporting platform and is defined as a secondary supporting platform and a primary supporting platform from front to back, the tail end of the first horizontal hydraulic cylinder 331 is fixedly arranged at the rear end of the platform body 31, and the head end of the first horizontal hydraulic cylinder 331 is connected with the primary supporting platform; the tail end of the second horizontal hydraulic cylinder 332 is fixedly arranged at the rear end of the primary supporting platform, and the head end of the second horizontal hydraulic cylinder 332 is connected with the secondary supporting platform. The primary supporting platform extends and retracts in the horizontal direction under the action of the first horizontal hydraulic cylinder 331, the secondary supporting platform extends and retracts in the horizontal direction under the action of the second horizontal hydraulic cylinder 332, and the supporting platform extends and retracts in the tunneling direction under the action of the corresponding horizontal hydraulic cylinder.
A vertically adjustable lifting platform 312 is further arranged below the platform body 31, the top end of the lifting platform 312 is connected with the lower side surface of the platform body 31, and the bottom end of the lifting platform 312 is connected with the base 7; preferably, the lifting platform 312 is a scissor arm rod group, the lower side surfaces of the base 7 and the working platform 3 are respectively provided with a hinged base 314 and a sliding platform 313, one side of the scissor arm rod group is hinged with the hinged base 314, and the other side of the scissor arm rod group is in limited sliding connection with the sliding platform 313.
In use, the specific working process of the advance support bracket is as follows:
1) along with the cutting of entry driving machine cutting head to the tunnel coal rock wall, flexible back timber in the one-level is constantly stretched out through the first bottom pneumatic cylinder on the control main support base to main support 1, stretches out completely until flexible back timber in the one-level to the support back timber at its top is risen to suitable height through the hydraulic pressure support post of flexible back timber in the one-level, and stretches out the formula side guard board that contracts in through the side fender beam jack, realizes the in time strut that comes the tunnel roof to the naked exposure of entry driving machine cutting in-process.
2) The roadway coal rock wall is cut continuously along with the cutting head of the tunneling machine, the second bottom hydraulic cylinder is controlled to continuously stretch out the second-stage inner telescopic top beam until the second-stage inner telescopic top beam completely stretches out, the supporting top beam at the top of the second-stage inner telescopic top beam is lifted to a proper height through the hydraulic supporting upright post of the second-stage inner telescopic top beam, the side protection beam jacks stretch out the inner telescopic side protection plate, and the roadway top plate which is newly exposed in the cutting process of the tunneling machine is timely supported.
3) The lifting hydraulic cylinder 311 of the working platform 3 retracts to enable the platform body 31 to be lowered to a proper height, the first horizontal hydraulic cylinder 331 is used for enabling the primary supporting platform to extend out, then the second horizontal hydraulic cylinder 332 is used for enabling the secondary supporting platform to extend out, and workers complete the operations of laying, networking and anchoring on the working platform 3 to realize permanent supporting of an exposed top plate in the tunneling process;
4) after the supporting operation is finished, the secondary supporting platform is retracted through the second horizontal hydraulic cylinder 332 of the working platform 3, and the primary supporting platform is retracted through the first horizontal hydraulic cylinder 331; and the platform body 31 is lifted to a position about 200mm away from the top guard plate 121 of the main stand 1 by the extension of the lifting hydraulic cylinder 311 of the working platform 3.
5) The retractable side guard plate 454 is retracted by the side guard beam jack of the secondary inner retractable top beam 5, the top beam is lowered to a proper height by the upright post of the secondary inner retractable top beam 5, and the secondary inner retractable top beam is retracted below the primary inner retractable top beam by the second bottom hydraulic cylinder 63.
6) The retractable side guard plate 454 is retracted by the side guard jack of the first-stage inner telescopic top beam 4, the supporting top beam 451 is lowered to a proper height by the hydraulic supporting upright 452 of the first-stage inner telescopic top beam 4, and the first-stage inner telescopic top beam 4 and the second-stage inner telescopic top beam 5 are retracted below the working platform by the first bottom hydraulic cylinder 62.
7) The top guard plate 121 of the main bracket 1 slightly descends by retracting the lifting upright 122 of the main bracket 1 to be separated from the tunnel top plate, and then extends outwards through the pushing hydraulic cylinder 61 between the main bracket 1 and the auxiliary bracket 2, and drives the main bracket 1 to move forwards by taking the auxiliary bracket 2 as a fulcrum.
8) The lifting upright posts 122 of the main support 1 extend outwards, so that the top guard plate 121 of the main support 1 is re-supported on the roadway roof which is just permanently supported; meanwhile, the lifting upright post 122 of the secondary support 2 retracts to enable the top protection plate 121 of the secondary support 2 to be separated from the contact with the roadway roof, and the secondary support 2 moves forwards by retracting the pushing hydraulic cylinder 61 between the main support 1 and the secondary support 2 and taking the main support 1 as a fulcrum; after the auxiliary support 2 is moved forwards, the lifting upright posts 122 of the auxiliary support 2 extend outwards, so that the top protection plate 121 of the auxiliary support supports the roadway roof again; and finishing one working cycle, restarting the tunneling machine to cut the coal rock wall of the roadway, and starting the next working cycle.
The advance support bracket can support the roadway roof exposed when the heading machine cuts in time, and meanwhile, in one working cycle, the heading machine can realize multiple times of propulsion, the heading distance is obviously increased, the phenomena that the heading machine has to dig one anchor and has short heading distance and the heading machine frequently withdraws in the original heading operation are avoided, and the heading efficiency of the roadway is improved; meanwhile, the working unit is provided with the working platform, so that an operator can conveniently stand on the working platform to carry out lapping, networking and anchoring operation, the phenomenon that a worker frequently moves the escalator and needs a specially-assigned person to support the escalator in the original tunneling operation is avoided, the number of the operating personnel is reduced, the labor intensity of the worker is reduced, the operating efficiency is improved, and the safety of the worker operation is guaranteed; the main support, the auxiliary support and the working platform are provided with a scissor arm rod set, and the main support, the auxiliary support and the working platform have good stability while lifting; in addition, the working platform is provided with a multi-stage supporting platform, the structure is compact, the working range is large, and the working efficiency of the lapping, networking and anchoring operation is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "center", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Claims (4)
1. A comprehensive mechanical tunneling inner telescopic top beam is characterized in that: comprises a main bracket and an inner telescopic top beam which is telescopically arranged in front of the main bracket;
the inner telescopic top beam comprises a support top beam, a hydraulic support upright post, a support bottom plate and an inner telescopic side guard plate;
the support top beam is fixedly arranged above the hydraulic support upright post, the bottom of the hydraulic support upright post is fixedly arranged on the support bottom plate, and the support top beam is vertically stretched under the action of the hydraulic support upright post;
the inward-shrinkage type side guard plates are inserted at two sides of the supporting top beam and horizontally extend and retract under the action of the side guard beam hydraulic cylinder.
2. The integrated mechanized excavation inner retractable roof beam of claim 1, wherein: the inner telescopic top beam comprises a first-stage inner telescopic top beam and a second-stage inner telescopic top beam;
the second-stage inner telescopic top beam and the first-stage inner telescopic top beam are sequentially arranged at the front end part of the main support from front to back, are telescopically connected to the inner side of the first-stage inner telescopic top beam and are connected with the first-stage inner telescopic top beam in a telescopic control mode through a second bottom hydraulic cylinder;
the first-stage inner telescopic top beam is telescopically connected to the inner side of the main support and is connected with the main support in a telescopic control mode through a first bottom hydraulic cylinder arranged on the main support base.
3. The integrated mechanized excavation inner retractable roof beam of claim 2, wherein: the tail end part of the first bottom hydraulic cylinder is fixedly arranged on the base of the main bracket, and the head end part of the first bottom hydraulic cylinder is connected with the rear end part of the supporting bottom plate of the first-stage inner telescopic top beam;
the tail end part of the second bottom hydraulic cylinder is fixedly arranged on the supporting bottom plate of the first-stage inner telescopic top beam, and the head end part of the second bottom hydraulic cylinder is connected with the rear end part of the supporting bottom plate of the second-stage inner telescopic top beam.
4. The integrated mechanized excavation inner retractable roof beam of claim 2, wherein: the side guard beam hydraulic cylinder is a side guard beam jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920882002.6U CN210195788U (en) | 2019-06-13 | 2019-06-13 | Comprehensive mechanical tunneling inner telescopic top beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920882002.6U CN210195788U (en) | 2019-06-13 | 2019-06-13 | Comprehensive mechanical tunneling inner telescopic top beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210195788U true CN210195788U (en) | 2020-03-27 |
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ID=69874339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920882002.6U Expired - Fee Related CN210195788U (en) | 2019-06-13 | 2019-06-13 | Comprehensive mechanical tunneling inner telescopic top beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210195788U (en) |
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2019
- 2019-06-13 CN CN201920882002.6U patent/CN210195788U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20200327 |