CN116142640A

CN116142640A - Vibrating feeder for strip mine mining

Info

Publication number: CN116142640A
Application number: CN202310178302.7A
Authority: CN
Inventors: 宋佳琛; 姜文鑫
Original assignee: Huaneng Yimin Coal and Electricity Co Ltd
Current assignee: Huaneng Yimin Coal and Electricity Co Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-05-23

Abstract

The invention discloses a vibratory feeder for strip mine mining, which comprises a conveying unit, wherein the conveying unit comprises a belt conveyor, and a mounting plate is arranged on the belt conveyor; the feeding unit comprises a bin fixedly arranged on the mounting plate, an opening is formed below the bin, and a cover plate is arranged above the bin; the vibration unit is arranged on the side surface of the storage bin; the eccentric unit comprises a first weight piece and a second weight piece which are arranged outside the rotating shaft and coaxially arranged with the rotating shaft, and the first weight piece and the second weight piece are of semi-annular structures; when the coal mine feeding is performed, the bin is hit through the vibration unit, blocking is avoided, the vibration force of the vibration unit is adjusted in real time according to the size of the fed coal mine and the feeding flow, the phenomenon that the feeding machine is blocked or the vibration force is overlarge to generate dust and noise due to small vibration force is avoided, and the adjusting mode is simple and effective and can be adjusted at any time according to the feeding condition.

Description

Vibrating feeder for strip mine mining

Technical Field

The invention relates to the field of coal mine feeders, in particular to a vibratory feeder for strip mine mining.

Background

At present, a large amount of double-mass near-resonance inertial vibration feeders are used in industries such as metallurgy, mines, coal and the like, and the feeder has the advantages of low power consumption, large feeding amount and the like, so that the feeder is applied to practical production to a certain extent. However, due to the limited structure, the vibration force of the feeder cannot be adjusted on line in real time in the working process of the equipment, because the vibration force of the feeder is generally realized through the vibration frequency of a vibration exciter or a vibration driving motor with fixed power, and because the driving motors with different types need to be replaced if the vibration force is adjusted, the actual operation is complicated and the vibration force cannot be adjusted timely.

Disclosure of Invention

This section is intended to summarize some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, which may be simplified or omitted from the present section and description abstract and title of the application to avoid obscuring the objects of this section, description abstract and title, and which is not intended to limit the scope of this invention.

The present invention has been made in view of the above and/or problems occurring in the prior art.

Therefore, the technical problem to be solved by the invention is that the vibration force of the feeder is generally realized by the vibration frequency of a vibration exciter or a vibration driving motor with fixed power, and if the vibration force is adjusted, driving motors with different types are required to be replaced, so that the actual operation is complicated and the adjustment cannot be performed in time.

In order to solve the technical problems, the invention provides the following technical scheme: the vibratory feeder for the strip mine mining comprises a conveying unit, wherein the conveying unit comprises a belt conveyor, and a mounting plate is arranged on the belt conveyor;

the feeding unit comprises a bin fixedly arranged on the mounting plate, an opening is formed below the bin, and a cover plate is arranged above the bin;

and the vibration unit is arranged on the side surface of the storage bin.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the feed bin includes the curb plate, vibrating unit is including setting up two bearing frames at the curb plate, be provided with the pivot in the bearing frame, the pivot is connected with driving motor.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the side plates are provided with sliding rails, and the bearing seats are provided with sliding grooves which are in sliding connection with the sliding rails.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the sliding rail is uniformly provided with a plurality of positioning holes, the bearing seat is provided with a threaded hole penetrating through the sliding groove, and the threaded hole and the positioning holes are connected through bolts.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the eccentric unit comprises a first weight piece and a second weight piece which are arranged outside the rotating shaft and coaxially arranged with the rotating shaft, and the first weight piece and the second weight piece are of semi-annular structures;

the rotary shaft is a hollow shaft, a first long groove and a second long groove which extend along the axial direction are arranged on the rotary shaft, a first strip-shaped groove extends along the circumferential direction at the end part of the first long groove, a second strip-shaped groove extends along the circumferential direction at the end part of the second long groove, the first long groove is connected with the first strip-shaped groove to form an L shape, and the second long groove is connected with the second strip-shaped groove to form an L shape.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: a first pin is arranged on the inner side of the first load piece and is embedded into the first long groove and the first strip-shaped groove;

a second pin is arranged on the inner side of the second weight and is embedded into the second long groove and the second strip-shaped groove;

the central angles of the first strip-shaped groove and the second strip-shaped groove are 90 degrees;

when the first pin is positioned in the first strip-shaped groove and the second pin is positioned in the second strip-shaped groove, the first weight piece and the second weight piece are in parallel relation and are in end surface contact;

when the first pin is positioned in the first long groove and the second pin is positioned in the second long groove, the side surface of the first weight piece is overlapped with the side surface of the second weight piece.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the rotary shaft is internally provided with a first rotary cylinder and a second rotary cylinder, the rotary shaft is internally provided with an annular groove, the first rotary cylinder and the second rotary cylinder are both provided with limiting protrusions, the limiting protrusions are located in the annular groove, the periphery of the first rotary cylinder is provided with a first chute, a first pin is embedded into the first chute, the periphery of the second rotary cylinder is provided with a second chute, and a second pin is embedded into the second chute.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the device comprises a first rotary cylinder, a second rotary cylinder, a first rotary table and a second rotary table, wherein the first rotary cylinder and the second rotary cylinder are arranged on the inner side of the first rotary cylinder, the second rotary cylinder is provided with a first spiral groove on the inner side, the first rotary table and the second rotary table are arranged on the regulating shaft, the first rotary table is embedded in the first spiral groove, and the second rotary table is embedded in the second spiral groove;

the first spiral groove and the second spiral groove are opposite in rotation direction.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the rotating shaft is provided with a moving groove extending along the axial direction, and the adjusting shaft is provided with a connecting rod penetrating through the moving groove.

As a preferred embodiment of the vibratory feeder for strip mine mining according to the present invention, wherein: the driving ring is connected with the outside of the rotating shaft and is in threaded connection with the rotating shaft, a groove is formed in the inner side of the driving ring, and the connecting rod is embedded into the groove.

The invention has the beneficial effects that: when the coal mine feeding is performed, the bin is hit through the vibration unit, blocking is avoided, the vibration force of the vibration unit is adjusted in real time according to the size of the fed coal mine and the feeding flow, the phenomenon that the feeding machine is blocked or the vibration force is overlarge to generate dust and noise due to small vibration force is avoided, and the adjusting mode is simple and effective and can be adjusted at any time according to the feeding condition.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is a schematic view of a vibratory feeder for strip mine mining according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a feeding unit in a vibratory feeder for strip mining according to an embodiment of the present invention;

FIG. 3 is a front view of a feeder unit in a vibratory feeder for strip mining according to one embodiment of the present invention;

FIG. 4 is a diagram of the installation position of a vibratory unit in a vibratory feeder for strip mining according to one embodiment of the invention;

fig. 5 is a schematic structural view of a glass slide box in a vibratory feeder for strip mining according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an exploded structure of an eccentric unit and a rotary shaft in a vibratory feeder for strip mining according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a pivot center on an axle center in a vibratory feeder for mining a strip mine according to an embodiment of the present invention;

FIG. 8 is a schematic view of a vibratory feeder for a strip mine mining with a maximum vibratory force of a rotating shaft according to an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of a rotary shaft and eccentric unit in a vibratory feeder for strip mine mining according to an embodiment of the present invention.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.

In the following detailed description of the embodiments of the present invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the invention is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a vibratory feeder for mining a strip mine, including a conveying unit 100, a feeding unit 200, and a vibrating unit 300, wherein the conveying unit 100 includes a belt conveyor 101, and a mounting plate 102 is disposed on the belt conveyor 101; the belt conveyor 101 is in the prior art, and the mounting plate 102 is fixedly arranged on a frame of the belt conveyor 101; the feeding unit 200 comprises a bin 201 fixedly arranged on the mounting plate 102, an opening is arranged below the bin 201, the opening faces the surface of the belt conveyor 101, and a cover plate 202 is arranged above the bin 201. The vibration unit 300 is provided at a side surface of the bin 201, and can strike the bin 201.

Wherein, feed bin 201 includes curb plate 201a, and vibrating unit 300 includes two bearing frame 301 that set up at curb plate 201a, is provided with pivot 302 in the bearing frame 301, and pivot 302 is connected with driving motor 303. The driving motor 303 is fixed on one of the bearing blocks 301, is connected with the rotating shaft 302 through a coupling, and drives the rotating shaft 302 to rotate.

The side plate 201a is provided with a slide rail 201b, the bearing seat 301 is provided with a slide groove 301a, and the slide groove 301a is in sliding connection with the slide rail 201 b. The bearing housing 301 can be moved along the slide rail 201b, thereby adjusting the position of the vibration unit 300.

The sliding rail 201b is uniformly provided with a plurality of positioning holes 201c, the bearing seat 301 is provided with a threaded hole 301b penetrating through the sliding groove 301a, the threaded hole 301b and the positioning holes 201c are connected through bolts, the vibration unit 300 is fixed at a position where vibration is required through the bolts, and vibration force is generated when the storage bin 201 is hit.

In this embodiment, when feeding, the vibration unit 300 is arranged to strike the bin 201, so as to avoid blocking and jamming, and meanwhile, the position of the vibration unit 300 is adjusted according to blocking conditions of different height positions in the bin 201, so that the vibration effect is optimized.

Example 2

Referring to fig. 4 to 9, a second embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that:

the output shaft of the driving motor 303 is connected with a rotating shaft 302; the output shaft of the driving motor 303 is connected with the rotating shaft 302 in a coupling way.

An eccentric unit 400 is further included for generating a vibration force. The device comprises a first weight 401 and a second weight 402 which are arranged outside a rotating shaft 302 and coaxially arranged with the rotating shaft 302, wherein the structural shapes of the first weight 401 and the second weight 402 are completely consistent, and the first weight 401 and the second weight 402 are semi-annular structures.

The first weight 401 and the second weight 402 can form a complete ring shape and are sleeved outside the rotating shaft 302, and at this time, the center of gravity of the rotating shaft 302 and the eccentric unit 400 is at the axis of the rotating shaft 302, so that no vibration force is generated. The positions of the first weight 401 and the second weight 402 can be changed, and when the positions of the first weight 401 and the second weight 402 are arranged in parallel, the first weight 401 and the second weight 402 have the effect of an eccentric shaft, so that vibration force can be generated.

The rotating shaft 302 is a hollow shaft, a first long groove 302a and a second long groove 302b extending along the axial direction are arranged on the rotating shaft 302, the lengths of the first long groove 302a and the second long groove 302b are identical, the second long groove 302b is located on the opposite side of the first long groove 302a, a first strip-shaped groove 302c extends along the circumferential direction at the end part of the first long groove 302a, a second strip-shaped groove 302d extends along the circumferential direction at the end part of the second long groove 302b, the first long groove 302a and the first strip-shaped groove 302c are connected to form an L shape, and the second long groove 302b and the second strip-shaped groove 302d are connected to form an L shape.

The first and second

long grooves

302a, 302b are located on the same axial section, and the ends of the first and

second bar grooves

302c, 302d are located on the same axial section and on the same side of the rotating shaft 302. Thus forming two L-shaped grooves on the rotating shaft 302.

In this embodiment, a virtual plane a is set, wherein the axis of the rotating shaft 302 is perpendicular to the plane a, the second plane B of the axial section of the end portion of the bar-shaped groove 302d is located, and the second long groove 302B and the second bar-shaped groove 302d should satisfy: the second elongated slot 302B is in a position where the first elongated slot 302a is mirrored in plane a and then mirrored in plane B, and the second bar slot 302d is in a position where the first bar slot 302c is mirrored in plane a and then mirrored in plane B.

Further, a first pin 401a is arranged on the inner side of the first weight 401, and the first pin 401a is embedded into the first long groove 302a and the first strip groove 302 c; when the first pin 401a is positioned in the first long groove 302a, the first weight 401 moves linearly, and when the first pin 401a is positioned in the first bar-shaped groove 302c, the first weight 401 moves circularly.

Similarly, a second pin 402a is disposed inside the second weight 402, and the second pin 402a is embedded in the second long groove 302b and the second bar groove 302d, so that the second weight 402 can also perform linear or circular motion.

Wherein the central angles of the first and second bar-shaped

grooves

302c and 302d are 90 deg., and thus the maximum deflection ranges of the first and

second weight members

401 and 402 are 90 deg., and the relative maximum deflection angles of the first and

second weight members

401 and 402 are 180 deg..

When the first pin 401a is positioned in the first bar-shaped groove 302c and the second pin 402a is positioned in the second bar-shaped groove 302d, the first weight 401 and the second weight 402 are in parallel relation and are in end-face contact; at this time, the center of gravity of the rotating shaft 302 and the eccentric unit 400 is not located at the axial center of the rotating shaft 302, and a vibration force can be generated at this time.

When the first pin 401a is located in the first long groove 302a and the second pin 402a is located in the second long groove 302b, the side surface of the first weight 401 is overlapped with the side surface of the second weight 402, if the first pin 401a moves to the end of the first long groove 302a, the end of the second pin 402a to the end of the second long groove 302b, that is, the first weight 401 and the second weight 402 are close to each other, at this time, the end surfaces and the side surfaces of the first weight 401 and the second weight 402 are completely overlapped, and the first weight 401 and the second weight 402 form a complete annular structure, the center of gravity of the rotating shaft 302 and the eccentric unit 400 is at the axis line of the rotating shaft 302, and the rotating shaft 302 has no radial vibration force.

Further, a first rotary cylinder 403 and a second rotary cylinder 404 are disposed in the rotary shaft 302, and the first rotary cylinder 403 and the second rotary cylinder 404 can both rotate. In this embodiment, the annular groove 302e is disposed in the rotating shaft 302, and the first rotating cylinder 403 and the second rotating cylinder 404 are both provided with limiting protrusions, and the limiting protrusions are located in the annular groove 302e, so that the first rotating cylinder 403 and the second rotating cylinder 404 cannot axially deviate.

The first rotary cylinder 403 is provided with a first chute 403a at its outer periphery, the first pin 401a is fitted into the first chute 403a, the second rotary cylinder 404 is provided with a second chute 404a at its outer periphery, and the second pin 402a is fitted into the second chute 404 a. The first chute 403a runs out of the axial section of the first rotary drum 403 nor in a vertical plane to the axial section of the first rotary drum 403; and the inclination direction of the first chute 403a satisfies: when the first pin 401a is positioned in the first long groove 302a and the first inclined groove 403a, the first rotary cylinder 403 rotates to move along the straight line with the first weight 401, and when the first pin 401a is positioned in the first bar groove 302c and the first inclined groove 403a, the first rotary cylinder 403 rotates to deflect along the axis with the first weight 401.

It should be noted that the principle of movement of the second rotary cylinder 404 and the second weight 402 is identical to that of the first rotary cylinder 403 and the first weight 401. And in order to satisfy the combination of the first weight 401 and the second weight 402, that is, the movements of the first weight 401 and the second weight 402 are always opposite, the rotation directions of the first rotation cylinder 403 and the second rotation cylinder 404 should be opposite.

In order to make the rotation directions of the first rotating cylinder 403 and the second rotating cylinder 404 opposite, the device further comprises an adjusting shaft 405, the adjusting shaft 405 penetrates through the first rotating cylinder 403 and the second rotating cylinder 404, a first spiral groove 403b is formed in the inner side of the first rotating cylinder 403, a second spiral groove 404b is formed in the inner side of the second rotating cylinder 404, a first round table 405a and a second round table 405b are arranged on the adjusting shaft 405, the first round table 405a is embedded in the first spiral groove 403b, and the second round table 405b is embedded in the second spiral groove 404 b. The first spiral groove 403b and the second spiral groove 404b are rotated in opposite directions, and the adjustment shaft 405 itself is movable only in the axial direction and is not rotatable. Therefore, when the adjusting shaft 405 moves along the straight line, the first rotating cylinder 403 and the second rotating cylinder 404 are driven to rotate, and the rotation directions of the two rotating cylinders are opposite, so as to drive the first weight 401 and the second weight 402.

Preferably, the first rotary cylinder 403 and the second rotary cylinder 404 are connected by bearings (conventional means, not shown in the drawings), so that the first rotary cylinder 403 and the second rotary cylinder 404 do not affect each other even if the rotation directions are opposite.

Further, the rotation shaft 302 is provided with a moving groove 302f extending in the axial direction, and the adjustment shaft 405 is provided with a link 405c passing through the moving groove 302 f. The driving ring 406 is connected to the outside of the rotating shaft 302, the driving ring 406 is in threaded connection with the rotating shaft 302, a groove 406a is formed in the inner side of the driving ring 406, and the connecting rod 405c is embedded into the groove 406 a. That is, the driving ring 406 deflects the axial movement of the shaft 302, and drives the first rotary cylinder 403 and the second rotary cylinder 404 to rotate.

It should be noted that, as shown in fig. 9, in order to prevent the first and

second weight members

401 and 402 from falling off, the first and second

inclined grooves

403a and 404a are each provided with a T-shaped groove, which is consistent with the directions of the first and second

inclined grooves

403a and 404a, and at the same time, the ends of the first and

second pins

401a and 402a are correspondingly provided with bosses having T-shaped cross sections and are embedded in the corresponding T-shaped grooves.

In the present embodiment, the eccentric unit 400 of the vibration driving motor includes three modes, wherein the first is: the vibration force generated by the eccentric unit 400 is required to be maximum, at this time, the first weight 401 and the second weight 402 are located on the same side of the rotating shaft 302, the end faces and the side faces of the first weight 401 and the second weight 402 are overlapped, the first pin 401a is located at the end of the first bar-shaped groove 302c, and the second pin 402a is located at the end of the second bar-shaped groove 302 d; the second mode is: the center of gravity of the eccentric unit 400 and the rotating shaft 302 is located at the axial line of the rotating shaft 302, vibration force is not generated, at this time, the first weight 401 and the second weight 402 are formed into a complete annular sleeve and are arranged outside the rotating shaft 302, the first pin 401a is located at the end of the first long groove 302a, and the second pin 402a is located at the end of the second long groove 302 b; the third mode is an intermediate state between the first mode and the second mode, and the specific position can be adjusted by driving the ring 406. Through the cooperation of eccentric unit 400, vibration unit 300, when the batcher is fed, adjust eccentric unit 400 according to the jam condition, prevent to block up.

It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims

1. A vibratory feeder for strip mine mining, characterized in that: comprising the steps of (a) a step of,

the conveying unit (100) comprises a belt conveyor (101), and a mounting plate (102) is arranged on the belt conveyor (101);

the feeding unit (200) comprises a bin (201) fixedly arranged on the mounting plate (102), an opening is formed below the bin (201), and a cover plate (202) is arranged above the bin (201);

and a vibration unit (300) arranged on the side surface of the storage bin (201).

2. The strip mine mining vibratory feeder of claim 1, wherein: the bin (201) comprises a side plate (201 a), the vibration unit (300) comprises two bearing seats (301) arranged on the side plate (201 a), a rotating shaft (302) is arranged in each bearing seat (301), and the rotating shaft (302) is connected with a driving motor (303).

3. The strip mine mining vibratory feeder of claim 2, wherein: the side plate (201 a) is provided with a sliding rail (201 b), the bearing seat (301) is provided with a sliding groove (301 a), and the sliding groove (301 a) is in sliding connection with the sliding rail (201 b).

4. A strip mine mining vibratory feeder as claimed in claim 3, wherein: the sliding rail (201 b) is uniformly provided with a plurality of positioning holes (201 c), the bearing seat (301) is provided with a threaded hole (301 b) penetrating through the sliding groove (301 a), and the threaded hole (301 b) and the positioning holes (201 c) are connected through bolts.

5. The vibratory feeder for strip mine mining according to any one of claims 2-4, wherein: the eccentric unit (400) comprises a first weight piece (401) and a second weight piece (402) which are arranged outside the rotating shaft (302) and coaxially arranged with the rotating shaft (302), and the first weight piece (401) and the second weight piece (402) are of semi-annular structures;

the rotating shaft (302) is a hollow shaft, a first long groove (302 a) and a second long groove (302 b) which extend along the axial direction are arranged on the rotating shaft (302), a first strip-shaped groove (302 c) extends along the circumferential direction at the end part of the first long groove (302 a), a second strip-shaped groove (302 d) extends along the circumferential direction at the end part of the second long groove (302 b), the first long groove (302 a) is connected with the first strip-shaped groove (302 c) to form an L shape, and the second long groove (302 b) is connected with the second strip-shaped groove (302 d) to form an L shape.

6. The strip mine mining vibratory feeder of claim 5, wherein: a first pin (401 a) is arranged on the inner side of the first weight piece (401), and the first pin (401 a) is embedded into the first long groove (302 a) and the first strip groove (302 c);

a second pin (402 a) is arranged on the inner side of the second weight piece (402), and the second pin (402 a) is embedded into the second long groove (302 b) and the second strip groove (302 d);

the central angles of the first strip-shaped groove (302 c) and the second strip-shaped groove (302 d) are 90 degrees;

when the first pin (401 a) is positioned in the first strip-shaped groove (302 c) and the second pin (402 a) is positioned in the second strip-shaped groove (302 d), the first weight piece (401) and the second weight piece (402) are in parallel relation and are in end surface contact;

when the first pin (401 a) is positioned in the first long groove (302 a) and the second pin (402 a) is positioned in the second long groove (302 b), the side surface of the first weight (401) is overlapped with the side surface of the second weight (402).

7. The strip mine mining vibratory feeder of claim 6, wherein: be provided with first rotary drum (403), second rotary drum (404) in pivot (302), be provided with ring channel (302 e) in pivot (302), first rotary drum (403), second rotary drum (404) all are provided with spacing arch, and spacing arch is located ring channel (302 e), first rotary drum (403) periphery is provided with first chute (403 a), first round pin (401 a) imbeds in first chute (403 a), second rotary drum (404) periphery is provided with second chute (404 a), second round pin (402 a) imbeds in second chute (404 a).

8. The strip mine mining vibratory feeder of claim 7, wherein: the automatic rotary machine further comprises an adjusting shaft (405), wherein the adjusting shaft (405) penetrates through the first rotary cylinder (403) and the second rotary cylinder (404), a first spiral groove (403 b) is formed in the inner side of the first rotary cylinder (403), a second spiral groove (404 b) is formed in the inner side of the second rotary cylinder (404), a first round table (405 a) and a second round table (405 b) are arranged on the adjusting shaft (405), the first round table (405 a) is embedded in the first spiral groove (403 b), and the second round table (405 b) is embedded in the second spiral groove (404 b);

the first spiral groove (403 b) and the second spiral groove (404 b) are opposite in rotation direction.

9. The strip mine mining vibratory feeder of claim 8, wherein: the rotating shaft (302) is provided with a moving groove (302 f) extending along the axial direction, and the adjusting shaft (405) is provided with a connecting rod (405 c) penetrating through the moving groove (302 f).

10. The strip mine mining vibratory feeder of claim 9, wherein: the driving device is characterized in that a driving ring (406) is connected to the outside of the rotating shaft (302), the driving ring (406) is in threaded connection with the rotating shaft (302), a groove (406 a) is formed in the inner side of the driving ring (406), and a connecting rod (405 c) is embedded into the groove (406 a).