CN211287741U - A support for ore blasting - Google Patents

Abstract

The utility model discloses a support for ore blasting belongs to the coal mining field, the utility model discloses a: a base; the first pitching arm and the second pitching arm are arranged oppositely and are pivoted to the base; the first pitching arm is fixedly provided with a first arc gear, and the rotating axis of the first arc gear is collinear with the pivoting axis of the first pitching arm; the second pitching arm is fixedly provided with a second arc gear, and the rotating axis of the second arc gear is collinear with the pivoting axis of the second pitching arm; the ceiling is provided with a guide groove arranged along the length direction of the ceiling, and the top ends of the front pitching arm and the rear pitching arm are both arranged in the guide groove and can reciprocate relative to the ceiling; and the driving assembly is used for respectively driving the first arc gear and the second arc gear to rotate. The support replaces the existing hydraulic structure through the pitching arm and the tooth arc gear structure, so that the stability of the support is improved.

Description

A support for ore blasting

Technical Field

The utility model belongs to the coal mining field, concretely relates to a support for ore blasting.

Background

Coal mines are reasonable spaces excavated by humans when excavating geological formations rich in coal and generally include roadways, wells, and mining surfaces, among others. Coal mines often need to be blasted in the mining process, and support frame rods are needed below during blasting to prevent collapse and cause personnel busy injury.

The inventor of the embodiment of the present application finds that the prior art has at least the following problems in the process of implementing the technical solution of the present application: the current support passes through pneumatic cylinder height-adjusting, and the direct atress of pneumatic cylinder has the support stability can not be good when the blasting, and the problem that the pneumatic cylinder life-span reduced exists not enoughly.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, embodiments of the present application provide a support for ore blasting, which replaces the existing hydraulic structure with a pitch arm and a toothed arc gear structure to bear the force transmitted during blasting, thereby improving the stability of the support.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, embodiments of the present application provide a support for ore blasting, comprising:

a base;

a first and a second oppositely disposed pitch arm, both of which are pivotally connected to the base; the first pitching arm is fixedly provided with a first arc gear, and the rotating axis of the first arc gear is collinear with the pivoting axis of the first pitching arm; the second pitching arm is fixedly provided with a second arc gear, and the rotating axis of the second arc gear is collinear with the pivoting axis of the second pitching arm;

the ceiling is provided with a guide groove arranged along the length direction of the ceiling, and the top ends of the front pitching arm and the rear pitching arm are both arranged in the guide groove and can reciprocate relative to the ceiling; and

and the driving assembly is used for respectively driving the first tooth arc part and the second tooth arc part to rotate.

Optionally, the base includes: first support body and the second support body of mutual disposition, first support body and second support body all fixed set up in the top of base face, just first every single move arm is connected to through the pin joint in first support body the base, the second every single move arm through the pin joint in the second support body is connected to the base.

Optionally, the first pitching arm and the first support body are both two, and the first pitching arm and the first support body are both arranged along the length direction or the width direction of the base.

Optionally, the second pitching arm and the second frame body are both two, and the second pitching arm and the second frame body are both arranged along the length direction or the width direction of the base.

Optionally, the driving assembly includes:

an input gear engaged with a corresponding first or second tooth arc member;

and the servo motor is in transmission connection with the input gear.

Optionally, the driving assembly further includes:

the worm wheel is fixedly connected with the input gear and is coaxially arranged;

and the worm is fixedly connected with an output shaft of the servo motor and is coaxially arranged.

Optionally, the base further comprises a walking device.

Optionally, the running gear comprises a left track and a right track which are oppositely arranged.

Optionally, the canopy has anchor rod holes extending through the canopy.

Optionally, the front end of the ceiling is hinged with a front guard plate.

Compared with the prior art, the embodiment of this application will adjust the structural adjustment of support ceiling height for gear tooth arc structure for this support is through first every single move arm and second every single move arm when the blasting to and tooth arc gear atress, make the support atress more firm when the blasting, structural reliability is better. Thereby avoiding the situation that the hydraulic cylinder is damaged due to the stress of the hydraulic cylinder in the prior art.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a front view of a preferred embodiment of the present application;

fig. 2 is a left side view of fig. 1, wherein the front fascia and the ceiling are not shown.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to meet the production requirements and smoothly carry out various kinds of work under the coal mine, a tunneling working face needs to be frequently arranged, and one of the important points of roof control of the coal mine tunneling working face is in the head. The normal construction process after the blasting or cutting of the heading machine is temporary support and permanent support. At the moment, head-on personnel are more dense, and particularly, the personnel are close to the empty roof area when a shed is erected or a drilling machine is installed for bolting and other links. Although the measures such as knocking the upper and asking the top are taken, the phenomena of rib forming, top falling and the like still occur, and the phenomena are weak links for controlling the top plate. For a long time, due to the lack of effective temporary support facilities, the operations such as drilling, rock loading, supporting and the like are mostly carried out under the empty roof or the approximate empty roof, and the safe production is difficult to realize. Therefore, there are some prior arts to support the mine roof at the time of blasting by a movable support to prevent the collapse of the mine and to realize temporary support after blasting, which is based on the adaptation improvement of the existing hydraulic support, and therefore, a hydraulic structure is generally adopted, and the height of the ceiling of the temporary support is adjusted by a hydraulic cylinder. However, the temporary support is stressed by the hydraulic cylinder, and the internal structure of the hydraulic cylinder is easily damaged by the action of explosion impact force during blasting.

And this application will adjust the structural adjustment of the height of the ceiling of support for gear tooth arc structure for this structure atress is more firm, and structural reliability is better.

The inventive concepts of the present application will be further described with reference to certain preferred embodiments.

Referring to fig. 1, a stand for ore blasting includes: a base 1, oppositely disposed first and second pitch arms 2, 3, a canopy 4 and a drive assembly.

Wherein the first and second pitch arms 2, 3 are both pivoted to the base 1; the first pitch arm 2 is fixedly provided with a first arc member 201, and the rotation axis of the first arc member 201 is collinear with the pivot axis of the first pitch arm 2. The second pitching arm 3 is fixedly provided with a second toothed arc part, and the rotating axis of the second toothed arc part is collinear with the pivoting axis of the second pitching arm 3.

The ceiling 4 has a guide groove 401 arranged along the longitudinal direction of the ceiling 4, and the tip ends of the front and rear tilt arms are mounted in the guide groove 401 and can reciprocate relative to the ceiling 4.

The driving assembly is used for driving the first tooth arc part 201 and the second tooth arc part to rotate respectively.

Specifically, the base 1 may be a base 1 structure of a temporary support used in an existing coal mine, which generally has a wheeled or crawler-type traveling device. The advance of the base 1 can be realized by a telescopic device which is connected with a subsequent fixed hydraulic support, namely, the base 1 is pushed to advance by the telescopic device.

And a first pitching arm 2 and a second pitching arm 3 which are oppositely arranged are hinged on the top end surface of the base 1. The relative arrangement here may be such that the first and second pitch arms 2 and 3 are arranged facing each other, or such that the first and second pitch arms 2 and 3 are arranged facing away from each other. Preferably, in order to reduce the volume occupied by the support and make the structure of the support more stable and reliable, the first pitching arm 2 and the second pitching arm 3 are arranged opposite to each other.

The pivot axes of the first and second pitch arms 2 and 3 are both horizontal, so that the first and second pitch arms 2 and 3 swing by a certain angle in the vertical plane. When the first and second pitch arms 2 and 3 are both perpendicular to the base 1, the ceiling 4 is at the highest height, and the ceiling 4 is in a horizontal posture. When the upper ends of the first and second pitch arms 2 and 3 are brought close to each other, the ceiling 4 is at the lowest height. When the height of the ceiling 4 is the lowest, the ceiling 4 may be horizontal or inclined in any posture, and is not limited thereto.

It will be readily appreciated that the first and second toothed arc members 201, 201 may also be of a gear configuration or a gear segment configuration. However, in order to increase the moment arm, the reference circle radii of the first and second arc members 201 and 3 are increased, so that the input gear 601 can drive the first and second pitch arms 2 and 3 more easily. In order to avoid that the first arc member 201 and the second arc member occupy the space between the ceiling 4 and the base 1 when the size is too large, the first arc member 201 and the second arc member take the form of an arc, not a gear.

The first and second arc members 201, 201 may be fixedly connected to the corresponding first or second pitch arm 2, 3 by bolting or welding or the like.

The guide groove 401 on the ceiling 4 may be a guide rail groove formed on the ceiling 4, or a guide rail connected to the ceiling 4 by bolts, welding, or other equivalent techniques. The rail grooves or the rails may be provided on both side walls of the ceiling 4, or may be provided on the bottom wall of the ceiling 4. The upper ends of the first pitching arm 2 and the second pitching arm can slide in the guide rail groove or the guide rail through the sliding blocks fixedly connected in a welding or bolt connection mode. The slider may be T-shaped in configuration. Alternatively, in some embodiments, the upper ends of the first and second pitch arms 2, 3 may be slidable within a track groove or track by means of an articulated trolley.

The ceiling 4 is used for supporting, and the shape of the ceiling 4 may be a straight plate or an arc plate, which is not limited herein.

Specifically, in some embodiments, the base 1 includes: the base comprises a first frame body 101 and a second frame body 102 which are oppositely arranged, wherein the first frame body 101 and the second frame body 102 are fixedly arranged on the top end surface of the base 1, the first pitching arm 2 is connected to the base 1 through being pivoted on the first frame body 101, and the second pitching arm 3 is connected to the base 1 through being pivoted on the second frame body 102.

The first frame body 101 and the second frame body 102 are fixedly arranged on the top end surface of the base 1 by welding or bolt set. And the first and second pitch arms 2 and 3 are respectively pivoted to the upper portion of the first or second frame 101 or 102. The first frame body 101 and the second frame body 102 are additionally arranged, so that the structural strength of the hinged positions of the first pitching arm 2 and the second pitching arm 3 and the base 1 is increased, and the structure of the device is more stable and reliable. Meanwhile, the pivot axes of the first and second pitch arms 2 and 3 are heightened by the first and second frame bodies 101 and 102, so that the first and second pitch arms 2 and 3 can swing down to a negative angle in a wider swing range. The height of the ceiling 4 can be adjusted in a wider range, and the ceiling is more suitable for being used in mines.

Preferably, in order to enable the stress structure of the device to be more reasonable and stable, the number of the first pitching arms 2 and the number of the first frame body 101 are two, and the first pitching arms 2 and the first frame body 101 are arranged along the length direction or the width direction of the base 1. Further, the number of the second pitching arms 3 and the second frame 102 is two, and the second pitching arms 3 and the second frame 102 are arranged along the length direction or the width direction of the base 1.

That is, the first pitch arm 2 may be two front pitch arms in the length direction of the base 1, and the second pitch arm 3 may be two rear pitch arms in the length direction of the base 1. The first and second pitch arms 2 and 3 are arranged symmetrically to each other, and the arrangement between the two first pitch arms 2 and between the two second pitch arms 3 is also symmetrical. At this time, the two first pitch arms 2 and the two second pitch arms 3 may be pitched synchronously.

In some embodiments, the drive assembly comprises: an input gear 601 and a servo motor 604.

Wherein the input gear 601 is engaged with the corresponding first arc member 201 or second arc member. The servo motor 604 is in transmission connection with the input gear 601.

Specifically, the servo motors 604 are mounted on the base 1, and preferably there are 2 or 4 servo motors 604. The servo motor 604 drives the input gear 601 to rotate, and the input gear 601 drives the corresponding first arc member 201 or second arc member to swing by a corresponding angle. Referring to fig. 2, holes penetrating through the side walls of the first frame body 101 and the second frame body 102 are formed in the first frame body 101 and the second frame body 102, a shaft is installed in the holes through a bearing, an input gear 601 is fixedly sleeved at one end of the shaft located inside the first frame body 101 or the second frame body 102, and the other end of the shaft located outside the first frame body 101 or the second frame body 102 is in transmission connection with a servo motor 604 to transmit power. When there are two servo motors 604, one servo motor 604 simultaneously drives two first pitch arms 2 or two second pitch arms 3 to pitch.

In some embodiments, the servo motor 604 and the input gear 601 are in transmission connection through a worm and gear structure. Specifically, the worm wheel 602 is fixedly connected and coaxially arranged with the input gear 601. The worm 603 is fixedly connected with an output shaft of the servo motor 604 and is coaxially arranged.

Referring to fig. 2, the worm wheel 602 is fixedly sleeved on the other end of the shaft. At this time, the worm 603 is arranged along the length direction of the base 1.

The worm gear structure has strong bearing capacity and self-locking property, is suitable for being used on the bracket to bear force during explosion, and can be self-locked to avoid the first arc gear and the second arc gear from rotating under the action of external force during the stress of the explosion.

In some embodiments, the tracked running gear on the base 1 comprises left and right tracks arranged opposite one another. The base 1 can walk more stably and is better stressed during explosion.

In some embodiments, the roof 4 has anchor holes 402 extending through the roof 4 to facilitate bolting while temporarily retaining without affecting the efficiency of the excavation. There may be a plurality of anchor holes 402.

In some embodiments, the front end of the ceiling 4 is hinged to a front fascia 5. The front shield 5 provides temporary support for the roadway of the driving face to better protect equipment or personnel within the roof 4 during blasting.

In a specific embodiment, the working process is as follows:

the ceiling 4 is lifted and placed in place on the driving face, the front guard plate 5 is opened, and after blasting, bolting personnel bolts the top of the roadway through the bolt holes 402 at the upper end of the bolting protection shed. After the broken rocks or coal blocks are cleaned, the front protective plate 5 is folded back, the ceiling 4 is lowered through manual control to be separated from the top plate of the tunneling working face, then the base 1 is pushed forward to enable the front end of the base to be close to the end of the tunneling head, the ceiling 4 is lifted to support the top plate, and the front end baffle is opened. And (4) bolting personnel anchor rods are drilled at the top of the roadway through the round holes at the upper ends of the bolting protective sheds, and the process is repeated.

Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed inventive subject matter.

Claims (10)

1. A support for ore blasting, comprising:

a base;

a first and a second oppositely disposed pitch arm, both of which are pivotally connected to the base; the first pitching arm is fixedly provided with a first arc gear, and the rotating axis of the first arc gear is collinear with the pivoting axis of the first pitching arm; the second pitching arm is fixedly provided with a second arc gear, and the rotating axis of the second arc gear is collinear with the pivoting axis of the second pitching arm;

the ceiling is provided with a guide groove arranged along the length direction of the ceiling, and the top ends of the first pitching arm and the second pitching arm are both arranged in the guide groove and can reciprocate relative to the ceiling; and

and the driving assembly is used for respectively driving the first tooth arc part and the second tooth arc part to rotate.

2. A support for ore blasting according to claim 1, wherein the base comprises: first support body and the second support body of mutual disposition, first support body and second support body all fixed set up in the top of base face, just first every single move arm is connected to through the pin joint in first support body the base, the second every single move arm through the pin joint in the second support body is connected to the base.

3. A support for ore blasting according to claim 2, wherein the first pitch arm and the first frame are both two, and the first pitch arm and the first frame are both arranged along the length or width of the base.

4. A support for ore blasting according to claim 3, wherein there are two second pitch arms and two second frames, and the second pitch arms and the second frames are arranged along the length or width of the base.

5. A support for ore blasting according to claim 1, wherein the drive assembly comprises:

an input gear engaged with a corresponding first or second tooth arc member;

and the servo motor is in transmission connection with the input gear.

6. A support for ore blasting according to claim 5, wherein the drive assembly further comprises:

the worm wheel is fixedly connected with the input gear and is coaxially arranged;

and the worm is fixedly connected with an output shaft of the servo motor and is coaxially arranged.

7. A support for ore blasting according to claim 5, wherein the base further comprises walking means.

8. A support for ore blasting according to claim 7, wherein the travelling means comprises left and right oppositely disposed tracks.

9. A support for ore blasting according to claim 1, wherein the ceiling has anchor rod holes therethrough.

10. A support for ore blasting according to claim 1, wherein the front end of the ceiling is hinged to a front panel.

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