Scroll body

Abstract

The present invention relates to a turning and rolling body, which is a bucket-shaped structural member. The ends where the shovel mouth and the shovel back are located are respectively called the distal end and the proximal end. The working surface of its main body is a smooth space curved surface with a concave middle part. The height of the working surface of the main body gradually increases from the distal end towards the proximal end. The part of the working surface of the main body close to the distal end is a smooth concave curved surface with a lower front and a higher rear, and the part of the working surface of the main body close to the proximal end is a smooth concave curved surface with a higher front and a lower rear. The bottom surface of the main body is located above the track of the conveyor. The upper part of the turning and rolling body is provided with a top eaves that extends from the proximal end to the distal end. The length of the top eaves in the left-right direction gradually increases from zero from the rear to the front, and is less than the total left-right length of the working surface of the main body. The lower surface of the top eaves is a part of the working surface of the main body, and the side surface of the overhanging end of the top eaves is a vertical surface. When the present invention is used in cooperation with a protective net, it can prevent bulk ore materials larger than a certain size from entering the track tooth sockets, and avoid the rapid wear and crushing of the walking meshing system by the bulk ore materials from the source.

Description

Technical Field

[0001] The present invention relates to a tool for automatically rolling up a protective net, which is covered on the traveling track of a mining machine to prevent massive ore from entering the track tooth socket and hindering the movement of the mining machine as well as causing serious wear of the traveling meshing system of the mining machine. The purpose of rolling up the protective net is to avoid the protective net being in a covering state all the time and hindering the passage of the mining machine, belonging to the technical field of underground mining machinery. Background Art

[0002] When a drum-type mining machine is used to mine high-hardness ore, the reaction force (especially impact) generated by cutting hard ore has a great impact on the traveling meshing system of the mining machine, and the larger the size of the ore, the greater the impact on the traveling meshing system of the mining machine. As Figure 13 shown, especially when high-hardness and large-size ore enters the track tooth socket and cannot be broken and discharged, the traveling wheel teeth are too late to break the rock block, resulting in serious wear of the guiding sliding shoes of the mining machine (such as the bottom hook part of the guiding sliding shoes), and then serious wear and crushing of the traveling meshing system, significantly shortening the service life, and significantly increasing the time required for troubleshooting, seriously affecting the economy of mining.

[0003] In view of the above problems, the industry has proposed to increase the thickness and length of the wear-resistant layer on the contact surface of the guiding sliding shoes of the mining machine, and at the same time take further surface hardening measures on the contact surface of the track. Although these measures have improved and increased the service life of the existing traveling meshing system of the mining machine to a certain extent, the above problems have not been fundamentally solved, and still affect the traveling speed of the mining machine, and are still an important factor restricting production capacity and economic mining. Summary of the Invention

[0004] The purpose of the present invention is to provide a rolling body, which is used in combination with a protective net, can automatically roll up the protective net covered above the track section to be passed by the mining machine, and restore the covering and protecting state of the protective net for this section of the track after the mining machine passes smoothly, which not only does not affect the operation of the mining machine, but also can prevent massive ore larger than a certain size from entering the track tooth socket, avoiding the rapid wear of the traveling meshing system by massive ore from the source, reducing the replacement times of the guiding sliding shoes and track parts, and can greatly shorten the troubleshooting time.

[0005] The main technical solutions of the present invention are as follows:

[0006] A curling body, which is a "bucket" - shaped structural member. The ends where the bucket mouth and the bucket back are located are respectively called the distal end and the proximal end. The working surface of its main body is a smooth space - curved surface that is concave in the middle. The height of the working surface of the main body gradually increases from the distal end to the proximal end. The part of the working surface of the main body near the distal end is a smooth concave - curved surface with the front lower and the back higher, and the part of the working surface of the main body near the proximal end is a smooth concave - curved surface with the front higher and the back lower. The bottom surface of the main body is located above the track of the conveyor. The upper part of the curling body is provided with a top eave that extends from the proximal end to the distal end. The length of the top eave in the left - right direction gradually increases from zero from the back to the front, and is less than the total left - right length of the working surface of the main body. The lower surface of the top eave is part of the working surface of the main body, and the side surface of the overhanging end of the top eave is a vertical surface.

[0007] The working surface of the main body includes a discharging working surface and a curling working surface arranged in sequence from the distal end to the proximal end. The discharging working surface is a concave - curved surface with the front lower and the back higher, and the discharging working surface extends to the edge of the bottom surface of the main body at the distal end and is smoothly connected. The curling working surface is divided into a bottom curling surface, a middle curling surface, and an upper curling surface in sequence from the distal end to the proximal end. Among them, both the middle curling surface and the upper curling surface are concave - curved surfaces with the front higher and the back lower, and the bottom curling surface gradually transitions from the front lower and the back higher to the front higher and the back lower.

[0008] Preferably, the upper - lower width of the surface at the rear - partial part of the side surface of the overhanging end of the top eave is narrow at the front and wide at the back.

[0009] Preferably, the outer side of the proximal end of the curling body is set as a vertical large plane, and several pin holes can be provided on this vertical large plane, and a plurality of screw holes are distributed around each pin hole.

[0010] The rear part of the curling body is provided with a guiding arm that extends left - right. The front side surface of the guiding arm constitutes part of the working surface of the main body, and the top surface of the guiding arm is a smooth convex - curved surface with the distal end lower and the proximal end higher.

[0011] The guiding arm extends downward beyond the bottom surface of the main body.

[0012] There is a gap between the top eave and the guiding arm in the height direction.

[0013] Preferably, the curling body is an integral structural member.

[0014] The beneficial effects of the present invention are:

[0015] The rolling body is used in cooperation with the protective net. The rolling body can push the ore on the protective net covering the top of the track into the conveyor chute, and at the same time, it can also roll up the protective net and push it to the rear side of the walking box. After the walking box passes, it will automatically roll back to the top of the track for protection. It can effectively prevent large, medium and small ores from entering the track tooth sockets, avoiding problems such as wear and crushing caused by abnormal stress on the mining machine walking meshing system due to the inability to discharge the ore at the tooth sockets. Especially for the tooth sockets at the track seat, the above situation is improved more significantly, and at the same time, it does not affect the walking of the mining machine.

[0016] The protective net cooperates with the rolling body to automatically complete the whole process of cleaning the ore on the net top, rolling up the protective net and restoring the protective net, without manual intervention, with a simple structure and obvious effect.

[0017] The present invention can be directly installed on the existing walking meshing system, which can solve the protection problems of the existing equipment, has good overall interchangeability, and can upgrade and transform the existing structures under a large number of harsh working conditions. Brief Description of the Drawings

[0018] Figure 1 is the front view of an embodiment of the rolling body;

[0019] Figure 2 is the schematic diagram of the detachable installation interface structure of an embodiment of the rolling body;

[0020] Figure 3 is the schematic diagram of the working surface of the main body of the rolling body;

[0021] Figure 4 is the top view of an embodiment of the rolling body;

[0022] Figure 5 is Figure 1 the A-A cross-sectional view of

[0023] Figure 6 is Figure 4 the B-B cross-sectional view of

[0024] Figure 7 is the side view of the installation state of an embodiment of the present invention;

[0025] Figure 8 is Figure 7 the front view of

[0026] Figure 9 is Figure 7 the top view of

[0027] Figure 10 is Figures 7 - 9 the side view of the protective device connection interface structure of the walking box in

[0028] Figure 11 is Figures 7 - 9 a partial cross-sectional view of the protective device connection interface structure of the walking box in

[0029] Figure 12 schematic diagrams of various working states of the protective net;

[0030] Figure 13 is a schematic diagram of the existing structure of the walking engagement system where the bulk material accumulated at the track cannot be effectively discharged, affecting the engagement.

[0031] Reference numerals:

[0032] 1. Rolling body; 11. Main body; 1111. Large vertical plane on the outer side of the proximal end of the main body; 1112. Pin hole; 1113. Screw hole; 1114. Rear side surface of the main body; 1115. Rear side guiding surface of the main body; 112. Guiding arm; 1121. Top surface of the guiding arm; 113. Discharge working surface; 1131. Distal surface; 114. Bottom rolling working surface; 115. Middle rolling working surface; 116. Upper rolling working surface; 117. Top rolling surface;

[0033] 2. Protective net; 2'. Rolled-up protective net; 2". Protective net before rolling;

[0034] 31. Walking box housing; 311. Pin hole; 312. Screw hole; 32. Guide sliding shoe; 33. Walking wheel;

[0035] 4. Conveyor; 42. Track;

[0036] 51. Connecting pin; 52. Screw;

[0037] 91. Bulk ore on the top of the protective net that is pushed and unloaded; 92. Ore that accumulates near the track in the existing walking engagement system and is difficult to discharge. Detailed implementation manners

[0038] The present invention discloses a rolling body 1, as Figures 1 - 12As shown, it is a "bucket"-shaped structural member. For the convenience of expression, in this article, the ends where the cutting edge and the back of the "bucket" are located are respectively called the distal end and the proximal end. A detachable mounting interface structure is provided at the proximal end for fixedly connecting the rolling body to the traveling box of the mining machine. The working surface of its main body 11 (i.e., the inner surface of the "bucket") is a smooth space curved surface with a concave middle part. The height of the working surface of the main body gradually increases from the distal end to the proximal end. The part of the working surface of the main body close to the distal end is a smooth concave curved surface with a lower front and a higher rear, and the part of the working surface of the main body close to the proximal end is a smooth concave curved surface with a higher front and a lower rear. The bottom surface of the main body is located above the track 42 of the conveyor 4. The upper part of the rolling body is provided with an eaves that overhangs from the proximal end to the distal end. The length of the eaves in the left-right direction gradually increases from zero from the rear to the front, and is less than the total length of the working surface of the main body in the left-right direction. The lower surface of the eaves is a part of the working surface of the main body, and the side surface of the overhanging end of the eaves is a vertical surface.

[0039] The rolling body is used in cooperation with the protective net 2. The usage method is as follows: The protective net is inclined with a lower front and a higher rear and covers above the track 42 of the conveyor 4. The rear edge of the protective net is fixedly connected to the conveyor relatively, and the front edge of the protective net is a free edge. When there is no mining machine passing through, it naturally lies on the front top surface of the track (see the state of the protective net 2" in Figure 12 . By setting the appropriate mesh size of the protective net, ore materials larger than a certain size can be prevented from falling into the track, and further, abnormal wear of the track and the traveling system of the mining machine caused by the ore materials (such as the ore material 92 shown in Figure 13 ) that cannot be effectively discharged into the tooth sockets of the track can be completely avoided.

[0040] The rolling bodies 1 are symmetrically installed in pairs on the left and right sides of the housing of the traveling box of the mining machine. The specific direction is that the proximal ends of the rolling bodies are fixed on the traveling box, and the distal ends face the left and right outsides respectively. Whether the mining machine slides to the left or right along the track, correspondingly, the rolling body on the left or right side of the traveling box can turn up the protective net on that side upward and backward until the protective net is turned to the rear of the traveling box (see the state of the protective net 2' in Figure 12 ). When the traveling box of the mining machine passes through the track corresponding to the area where the protective net is turned up, the turned-up protective net automatically resumes its original state and resumes covering the corresponding area of the guide rail. This not only prevents ore materials larger than a certain size from entering the tooth sockets of the track, avoids abnormal stress wear and crushing of the mining machine track and the traveling system, but also does not affect the normal traveling of the mining machine, and improves the meshing efficiency of the traveling wheels 33, the guiding sliding shoes 32, and the track.

[0041] This surface is used to guide the protective net to first contact one end of the rolling body and gradually unfold upward and then turn up backward from this position when the rolling is almost finished. Since the length of the eaves in the left-right direction is shorter and shorter towards the rear, that is, the side surface of the overhanging end of the eaves gets closer and closer to the proximal end towards the rear, the turned-up protective net is gradually rolled out to the rear of the traveling box.

[0042] In the installed state, the bottom surface of the main body is located above the track of the conveyor, so the rolling body can move left and right synchronously with the walking box without jamming.

[0043] The working surface of the main body may further include a discharging working surface 113 and a rolling working surface arranged in sequence from the distal end to the proximal end. The discharging working surface is a concave curved surface with the front end lower than the rear end. The discharging working surface extends to the edge of the bottom surface of the main body at the distal end and is smoothly connected. The connection part can be seen in the distal curved surface 1131. This curved surface can be used for the initial stage guidance of the protective net. Especially after the protective net is used for a long time, the front part is prone to large-area deformation downward. At this time, the initial guiding effect of the distal curved surface 1131 gradually becomes prominent. The rolling working surface is divided into a bottom rolling surface 114, a middle rolling surface 115 and an upper rolling surface 116 in sequence from the distal end to the proximal end. Among them, both the middle rolling surface and the upper rolling surface are concave curved surfaces with the front end higher than the rear end, and the bottom rolling surface gradually transitions from the front end lower than the rear end to the front end higher than the rear end. When the mining machine slides left or right along the track, the protective net is first lifted by the guiding arm and the discharging working surface. The protective net has a surface shape with the front end lower than the rear end along with the discharging working surface, and the ore on the protective net can be dumped from the front into the conveying trough of the conveyor (see Figure 12 the ore 91). As the mining machine continues to move forward, the protective net is continuously lifted upward and synchronously rolled by the rolling working surface. After all the remaining ore is dumped, it is turned up backward and upward as a whole, and finally rolled out to the rear of the walking box. The turning back of the protective net is restricted by the rear end surface of the walking box housing 31. After the walking box passes, the rolled-out protective net gradually restores and finally reclines on the track again, realizing that all ore with a particle size above a certain size is sent into the conveying trough and preventing these ores from entering the track tooth sockets.

[0044] The outer side of the proximal end of the rolling body is preferably set as a vertical large plane, called the vertical large plane 1111 on the outer side of the proximal end of the main body, to facilitate the connection with the walking box housing. There are also several pin holes 1112 on this vertical large plane. For example, there are two pin holes in this embodiment, which are used for positioning by inserting connection pins 51. A plurality of screw holes 1113 are distributed around each pin hole, so as to be fixedly installed on the side wall of the walking box with screws 52. The vertical large plane 1111, pin holes 1112 and screw holes 1113 on the outer side of the proximal end of the rolling body main body constitute one kind of the detachable installation interface structure. Correspondingly, pin holes 311 and screw holes 312 are correspondingly arranged on the left and right side walls of the walking box (see Figure 10 ).

[0045] A guiding arm 112 extending left and right is provided at the rear of the curling body. The front side surface of the guiding arm forms a part of the working surface of the main body at the rear. The top surface 1121 of the guiding arm is a smooth convex curved surface with a lower distal end and a higher proximal end. In this embodiment, the top surface of the guiding arm is a smooth convex curved surface that gradually rises from zero from the distal end to the proximal end. In the installed state, the highest point of the top surface of the guiding arm is lower than the highest point of the protective net. When the protective net naturally covers the track, the distal end of the guiding arm first inserts under the rear part of the protective net, and then guides the protective net into the curling body at the rear side. As the mining machine continues to move forward, the rear part of the protective net is gradually lifted by the top surface of the guiding arm, forming a raised state at the rear to unload the ore forward. On the one hand, the guiding arm guides the protective net into the curling body, and on the other hand, it can also cause the lumps on the protective net to fall forward.

[0046] The guiding arm can extend downward beyond the bottom surface of the main body (the bottom surface is a horizontal plane in this embodiment), and the extended part is located behind the track of the conveyor, so as to guide the protective net starting from a position lower than the top surface of the track, and at the same time, it does not affect the movement of the curling body along with the walking box. At the same time, the distal end of the guiding arm can also extend beyond the distal end of the main body, which can not only guide the protective net starting from a position lower than the top surface of the track, but also obtain a relatively gentle top surface of the guiding arm to ensure the smoothness of the guiding.

[0047] A chamfer can be provided at the lower rear edge of the guiding arm to avoid scraping against the cable groove on the conveying trough.

[0048] A gap should be maintained between the top eaves and the guiding arm in the height direction, and an opening is formed at the upper rear side between the two, and the protective net rolls out backward and upward from here. The rear side surface 1114 of the main body above the guiding arm and the transition curved surface between the rear side surface of the main body and the top surface of the guiding arm, that is, the rear side guiding curved surface 1115 of the main body, play a certain guiding role in guiding the protective net to finally roll out behind the walking box.

[0049] The upper and lower widths of the surface at the rear part of the side surface of the overhanging end of the top eaves are narrower at the front and wider at the rear, which can be used as a guiding surface when the protective net rolls out backward and upward. The remaining surface of the side surface of the overhanging end of the top eaves can be a vertical plane extending front and back, which is the main surface for guiding the protective net to turn up backward and upward, and can be called the top turning surface 117.

[0050] The curling body is an integral special-shaped structural member.

[0051] The present invention can be installed and used on the conveyor track and mining machine of the existing structure, has good overall interchangeability, and can be adapted to the upgrading and transformation of the existing structures under a large number of harsh working conditions.

[0052] In this article, when the mining machine is working, the direction close to the ore wall to be mined is the front, and the direction away from the ore wall to be mined is the rear.

Claims

1. A curling body, characterized in that: It is a bucket-shaped structural member. The ends where the bucket mouth and the bucket back are located are respectively called the distal end and the proximal end. The working surface of its main body is a smooth space curved surface that is concave in the middle. The height of the working surface of the main body gradually increases from the distal end towards the proximal end. The part of the working surface of the main body near the distal end is a smooth concave curved surface that is lower in the front and higher in the back. The part of the working surface of the main body near the proximal end is a smooth concave curved surface that is higher in the front and lower in the back. The bottom surface of the main body is located above the track of the conveyor. The upper part of the rolling body is provided with a top eaves that extends from the proximal end to the distal end. The length of the top eaves in the left-right direction gradually increases from zero from the back to the front, and is less than the total left-right length of the working surface of the main body. The lower surface of the top eaves is a part of the working surface of the main body. The side surface of the overhanging end of the top eaves is a vertical surface. The working surface of the main body includes a discharge working surface and a rolling working surface that are arranged in sequence from the distal end to the proximal end. The discharge working surface is a concave curved surface that is lower in the front and higher in the back. The discharge working surface extends to the edge of the bottom surface of the main body at the distal end and is smoothly connected. The rolling working surface is divided into a bottom rolling surface, a middle rolling surface, and an upper rolling surface in sequence from the distal end to the proximal end. Among them, both the middle rolling surface and the upper rolling surface are concave curved surfaces that are higher in the front and lower in the back. The bottom rolling surface gradually transitions from lower in the front and higher in the back to higher in the front and lower in the back. The rear part of the rolling body is provided with a guiding arm that extends left and right. The front side surface of the guiding arm constitutes a part of the working surface of the main body. The top surface of the guiding arm is a smooth convex curved surface that is lower at the distal end and higher at the proximal end. The guiding arm extends downward beyond the bottom surface of the main body. The distal end of the guiding arm extends beyond the distal end of the main body. There is a gap in the height direction between the top eaves and the guiding arm. The rolling body is used in cooperation with a protective net. The protective net is inclined with a lower front and a higher back and covers above the track of the conveyor. The rear edge of the protective net is fixedly connected to the conveyor relatively. The front edge of the protective net is a free edge and naturally rests on the front top surface of the track when there is no mining machine passing through. The rolling bodies are symmetrically installed in pairs on the left and right sides of the housing of the walking box of the mining machine. Specifically, the proximal ends of the rolling bodies are fixed on the walking box, and the distal ends face the left and right outsides respectively.

2. The curling body according to claim 1, wherein: The vertical width of the surface at the rear part of the side surface of the overhanging end of the top eaves is narrower in the front and wider in the back.

3. The curling body according to claim 1, wherein: The outer side of the proximal end of the rolling body is set as a vertical large plane. There are several pin holes on this vertical large plane, and multiple screw holes are distributed around each pin hole.

4. The curling body according to claim 1, 2 or 3, characterized in that: The rolling body is an integral structural member.

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