CN109973090B

CN109973090B - Bradyseism's tunnelling formula coal mining machine

Info

Publication number: CN109973090B
Application number: CN201910192101.6A
Authority: CN
Inventors: 吴臻
Original assignee: Zhenyou Heavy Industry Jiangsu Co ltd
Current assignee: Zhenyou Heavy Industry Jiangsu Co ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-06-26
Anticipated expiration: 2039-03-14
Also published as: CN109973090A

Abstract

The invention provides a bradyseism tunneling type coal mining machine which comprises a first spring seat, a spring seat top cover, a universal ball seat, a first hinged shaft, a shaft coupling sleeve, a spring support cylinder, a guide rod, a strength spring and three vibration damping and bearing structures which are combined in a unified manner, wherein one part of the structure is connected to a projecting arm of the tunneling machine and can play a role in damping and bearing vibration for the projecting arm, one part of the structure is supported at the front side position of the machine body of the tunneling machine to carry out predictive elastic support on forward shaking which possibly occurs to the machine body, the other part of the structure is positioned at the bottom side position of the machine body, and the other part of the structure is also positioned at the bottom side position of the machine body to carry out certain predictive support on downward shaking and swinging which possibly occurs to the machine body.

Description

Bradyseism's tunnelling formula coal mining machine

Technical Field

The invention belongs to the technical field of tunneling coal mining machine structures, and particularly relates to a cushioning tunneling coal mining machine.

Background

The coal mining machine is a large complex system integrating machinery, electricity and hydraulic pressure, the working environment is severe, and if a fault occurs, the whole coal mining work is interrupted, so that huge economic loss is caused. A coal mining machine is one of important devices for realizing mechanization and modernization of coal mine production. The mechanical coal mining can reduce the physical labor and improve the safety. The tunneling coal mining machine mainly comprises a machine body, an extension arm and a rotary coal mining turntable, wherein core components of the tunneling coal mining machine are the extension arm and the coal mining turntable at the top end of the extension arm, a plurality of coal mining tooth holders are arranged on the coal mining turntable, when the turntable rotates, the tooth holders are used for scratching a coal mine, coal blocks in the coal mine are knocked down, and a conveying mechanism on the extension arm is used for receiving and conveying the coal blocks, so that the purpose of coal mining is achieved.

In the existing tunneling coal mining machine described above, the extending arm of the extending arm can generate large vibration when rotating strongly along with the coal mining disc, and the vibration can also cause the machine body to vibrate, so that related matching components of the matching structure of each component can be loosened or deformed, therefore, after the coal mining machine is used for a period of time, people often find that related matching components such as connecting bolts and the like in the positions of the components are continuously lacked, and therefore regular maintenance and repair are needed, which is mainly loosening and dropping caused by high-frequency vibration.

Disclosure of Invention

In order to solve the technical problems, the invention provides a vibration-damping tunneling coal miner, which aims to solve the problem that the conventional tunneling coal miner generates large vibration when a cantilever arm extending arm rotates strongly along with a coal mining disc, and the vibration also can cause the machine body to vibrate, so that related matching components of matching structures of all components can be loosened or deformed, so that after the coal miner is used for a period of time, the coal miner often finds that related matching components such as connecting bolts in the positions of the components are continuously lacked, regular maintenance is needed, and the problem that the components are loosened and fall off due to high-frequency vibration is mainly solved.

The invention relates to a purpose and an effect of a bradyseism tunneling type coal digging machine, which are achieved by the following specific technical means:

a bradyseism tunneling type coal digging machine comprises a coal digging machine main body, a machine body underframe, a supporting arm, a rubber plate, a hinged seat, an upper welding plate, a lower welding plate, a guide hole, a first spring seat, a spring seat top cover, a universal ball seat, a first hinged shaft, a shaft sleeve, a spring support cylinder, a guide rod, a strength spring, a vibration damping cylinder, a U-shaped support, a second hinged shaft, a second spring seat, a third hinged shaft, a buffer rod, a rubber block support, a circular soft rubber block and a mounting hole; the hinge seat is arranged on the top surface of the machine body underframe through the mounting hole at the rear side, and two top surfaces of the hinge seat are welded with upper welding plates with rectangular plate structures; a lower welding plate with a rectangular plate structure is welded at the left side position of the bottom surface of the upper welding plate, and the bottom ends of the lower welding plates are welded on the left end surface of the hinge seat; the lower welding plates are provided with round guide holes, and extension rods of first spring seats arranged on the two upper welding plates penetrate downwards and pass through the guide holes; the first articulated shaft is provided with a coupling sleeve in a penetrating fit mode, and the first articulated shaft is matched on the articulated seat.

Further: the shaft coupling sleeve is welded with a spring support cylinder, a guide rod is welded in the spring support cylinder, and the guide rod is sleeved with a strength spring.

Further: the damping cylinder is also sleeved on the guide rod, and the bottom end of the damping cylinder is in elastic extrusion contact with the top end of the strength spring.

Further: the top of the damping cylinder is matched with a U-shaped support through a second through hinge shaft, and the U-shaped support is connected to the supporting arm in a bolt fixing mode.

Further: a second spring seat is welded on the left side of the outer wall of the vibration reduction cylinder, a pulley support is welded on the left side of a spring structure of the second spring seat in a supporting mode, and a circular soft rubber block is installed on the pulley support in a mode of penetrating through the third hinge shaft in a matched mode.

Further: first spring holder has carried out structural improvement, and its top cover is equipped with the spring holder overhead guard, and the top surface of spring holder overhead guard adopts the smooth excessive processing of fillet to it has the universal ball seat of round to inlay at the outer edge equipartition of fillet.

Further: the front end face of the coal digging machine main body is further provided with a rubber plate, and the second spring seat is just positioned at the bottom side of the rubber plate.

Further: the rubber plate is an arc streamline plate structure with the thickness size of the front area larger than that of the rear area.

Compared with the prior art, the invention has the following beneficial effects:

this device is an accessory of tunnelling formula coal-winning machine, it holds the structure of shaking to have three dampings, this three dampings hold the structure of shaking and has realized unified combination, a structural connection is on the cantilever arm of entry driving machine, can constitute the effect that the cantilever arm played the damping and held the shaking, one supports and shakes forward leaning that the organism probably appears at the organism front side position of entry driving machine and carries out prophetic elastic support, another bearing structure is located bottom side position of the organism, shake the swing action under probably appearing the organism and carry out certain prophetic support equally, can find out from this, this buffer structure has three big support characteristics, cushion the support to the position of the three vibration that probably appears of organism, the buffering effect is good, and is rational in infrastructure.

Drawings

Fig. 1 is a schematic structural view of the buffering mechanism of the present invention connected to a coal mining machine body.

Fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6 are only schematic structural diagrams of the buffer mechanism of the present invention.

Fig. 7 is an enlarged schematic view of the part C of the present invention drawn from fig. 1.

Fig. 8 is a schematic view of the positions of the first spring seat and the second spring seat and the vibration-damped region at the front side position of the machine body main body according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a coal digging machine main body; 101. a machine body chassis; 102. a support arm; 103. a rubber plate; 2. a hinged seat; 3. welding a plate; 4. welding a plate; 5. a guide hole; 6. a first spring seat; 7. a spring seat top cover; 8. a universal ball seat; 9. a first hinge shaft; 10. a shaft coupling sleeve; 1001. a spring support cylinder; 1002. a guide bar; 11. a strength spring; 12. a vibration damping cylinder; 13. a U-shaped support; 14. a second hinge shaft; 15. a second spring seat; 16. a third hinge shaft; 17. a buffer rod; 18. a rubber block support; 19. a round soft rubber block; 20. and (7) installing holes.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 8:

the invention provides a bradyseism tunneling type coal digging machine, which comprises: the coal mining machine comprises a coal mining machine main body 1, a machine body underframe 101, a supporting arm 102, a rubber plate 103, a hinge base 2, an upper welding plate 3, a lower welding plate 4, a guide hole 5, a first spring seat 6, a spring seat top cover 7, a universal ball seat 8, a first hinge shaft 9, a shaft sleeve 10, a spring support cylinder 1001, a guide rod 1002, a strength spring 11, a vibration damping cylinder 12, a U-shaped support 13, a second hinge shaft 14, a second spring seat 15, a third hinge shaft 16, a buffer rod 17, a rubber block support 18, a round soft rubber block 19 and a mounting hole 20; the hinge base 2 is arranged on the top surface of the machine body underframe 101 through the mounting hole 20 at the rear side, and the two top surfaces of the hinge base 2 are welded with the upper welding plates 3 with rectangular plate structures; a lower welding plate 4 with a rectangular plate structure is welded at the left side of the bottom surface of the upper welding plate 3, and the bottom ends of the lower welding plates 4 are welded on the left end surface of the hinge seat 2; the lower welding plates 4 are provided with round guide holes 5, and extension rods of first spring seats 6 arranged on the two upper welding plates 3 penetrate downwards and pass through the guide holes 5; the first hinge shaft 9 is matched with a coupling sleeve 10 in a penetrating way, and the first hinge shaft 9 is matched on the hinge base 2.

Wherein: a spring support cylinder 1001 is welded on the coupling sleeve 10, a guide rod 1002 is welded in the spring support cylinder 1001, and a strength spring 11 is sleeved on the guide rod 1002, so that a shock absorber structure is formed, as shown in fig. 2 to 6.

Wherein: the damping cylinder 12 is also sleeved on the guide rod 1002, the bottom end of the damping cylinder 12 is in elastic extrusion contact with the top end of the strength spring 11, the damping cylinder 12 is a limiting structure at the bottom of the strength spring 11, and the damping cylinder 12 is pressed downwards under the action of the top acting force to enable the strength spring 11 to complete an extrusion action process, so that a buffering effect is formed.

Wherein: the top of the damping cylinder 12 is also matched with a U-shaped support 13 through a penetrating second hinge shaft 14, the U-shaped support 13 is connected to the supporting arm 102 in a bolt fixing mode, and after the damping mechanism is connected with the heading machine supporting arm 102 through the U-shaped support 13 at the top, the supporting arm 102 can be greatly reduced in buffering performance due to the vibration generated when the head rotating disc mines coal.

Wherein: the left side of the outer wall of the vibration reduction cylinder 12 is welded with a second spring seat 15, the left side of a spring structure of the second spring seat 15 is supported and welded with a rubber block support 18, the rubber block support 18 is provided with a circular soft rubber block 19 in a matching mode of penetrating through a third hinge shaft 16, the description structure is shown in fig. 4, namely, a vibration reduction mechanism is arranged at the position, close to the front side of the coal digging machine main body 1, of the outer wall of the vibration reduction cylinder 12, and the function of secondary buffering and vibration reduction characteristics is achieved.

Wherein: the first spring seats 6 are structurally improved, the spring seat top covers 7 are sleeved on the tops of the first spring seats, the top surfaces of the spring seat top covers 7 are subjected to round corner smooth transition treatment, a circle of universal ball seats 8 are uniformly and embedded on the outer edges of round corners, the description structure is shown in fig. 4 and fig. 5, and therefore the vibration reduction mechanism is characterized in that two symmetrical vibration reduction structures are installed at the bottom side positions.

Wherein: the front end face of the coal mining machine main body 1 is further provided with a rubber plate 103, the second spring seat 15 is just positioned at the bottom side position of the rubber plate 103, the structure is described in the position shown in the figure 1 and the figure 7, when the coal mining machine main body 1 generates front and back displacement action, the front side forms a front and back direction extrusion working process by utilizing the rubber plate 103 and the second spring seat 15, the second spring seat 15 has elastic buffering, so that the contact has buffering performance and good buffering performance, the buffering structure and the first spring seat 6 have the same direction buffering effect on the front side of the coal mining machine main body 1, and the structure is more reasonable.

Wherein: the rubber plate 103 is an arc streamline plate structure with the thickness dimension of the front area larger than that of the rear area, the description structure is shown in fig. 8, due to the structural characteristic of the rubber plate 103, when the rubber plate shakes along with the coal mining machine main body 1 and swings forwards, the bottom surface is contacted with the spring seat top cover 7 at the top end of the first spring seat 6, and after the sliding contact of the universal ball seat 8 on the top cover 7, the first spring seat 6 can form an arc line to be contacted, so that the arc bottom surface of the rubber plate 103 meets the requirement and is reasonable in structure.

When in use: as shown in fig. 1, when the conventional coal mining machine main body 1 is hit to a coal mine by using the rotating disc of the conventional rotating mechanism on the front supporting arm 102, the supporting arm 102 is greatly vibrated due to the impact generated by the rotating disc and the coal mine, and the primary buffer structure formed by the strength spring 11 and the damping cylinder 12 of the buffer device of the present design mounted on the bottom side of the supporting arm 102 generates a buffer effect to reduce the vibration, and when the bottom side and the front side position of the front portion of the coal mining machine main body 1 generate downward pressing or forward tilting vibration due to the vibration, the device is supported by the first spring seat 6 and the second spring seat 15 shown in fig. 8, and the buffer effect is also formed, and the three buffer vibration-absorbing structures are uniformly combined, so that the buffer structure has three support characteristics to buffer and support three possible vibration positions of the machine body, and has a good buffer effect, the structure is reasonable.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a tunnelling formula of bradyseism digs coal machine which characterized in that: the bradyseism tunneling type coal mining machine comprises a coal mining machine main body (1), a machine body chassis (101), a supporting arm (102), a rubber plate (103), a hinged seat (2), an upper welding plate (3), a lower welding plate (4), a guide hole (5), a first spring seat (6), a spring seat top cover (7), a universal ball seat (8), a first hinged shaft (9), a shaft coupling sleeve (10), a spring supporting cylinder (1001), a guide rod (1002), a strength spring (11), a vibration damping cylinder (12), a U-shaped support (13), a second hinged shaft (14), a second spring seat (15), a third hinged shaft (16), a buffer rod (17), a rubber block support (18), a round soft rubber block (19) and a mounting hole (20); the hinge base (2) is arranged on the top surface of the machine body underframe (101) through a mounting hole (20) at the rear side, and an upper welding plate (3) with a rectangular plate structure is welded on both top surfaces of the hinge base (2); a lower welding plate (4) with a rectangular plate structure is welded at the left side of the bottom surface of the upper welding plate (3), and the bottom ends of the lower welding plates (4) are welded on the left end surface of the hinge seat (2); the lower welding plates (4) are provided with round guide holes (5), and extension rods of first spring seats (6) arranged on the two upper welding plates (3) penetrate downwards and pass through the guide holes (5); a shaft coupling sleeve (10) penetrates through and is matched with the first hinged shaft (9), and the first hinged shaft (9) is matched with the hinged base (2); the shaft coupling sleeve (10) is welded with a spring support cylinder (1001), a guide rod (1002) is welded in the spring support cylinder (1001), and the guide rod (1002) is sleeved with a strength spring (11); the damping cylinder (12) is also sleeved on the guide rod (1002), and the bottom end of the damping cylinder (12) is in elastic extrusion contact with the top end of the strength spring (11); the top of the damping cylinder (12) is also matched with a U-shaped support (13) through a second through hinge shaft (14), and the U-shaped support (13) is connected to the supporting arm (102) in a bolt fixing mode; a second spring seat (15) is welded on the left side of the outer wall of the vibration reduction cylinder (12), a rubber block support (18) is welded on the left side of a spring structure of the second spring seat (15) in a supporting mode, and a circular soft rubber block (19) is further installed on the rubber block support (18) in a matched mode of penetrating through a third hinge shaft (16); the first spring seat (6) is structurally improved, a spring seat top cover (7) is sleeved on the top of the first spring seat (6), the top surface of the spring seat top cover (7) is subjected to round-angle smooth transition treatment, and a circle of universal ball seats (8) are uniformly embedded on the outer edge of each round angle; the front end face of the coal digging machine main body (1) is also provided with a rubber plate (103), and the second spring seat (15) is just positioned at the bottom side of the rubber plate (103); the rubber plate (103) is an arc streamline plate structure with the thickness dimension of the front area larger than that of the rear area.