Tail-turning sprocket shaft for a flight conveyor

Abstract

The application provides a scraper conveyor tail turning sprocket shaft, relates to the technical field of sprocket shaft sets, and comprises a main shaft and an auxiliary shaft. The opposite sides of the main shaft and the auxiliary shaft are provided with adjusting mechanisms, and the main shaft is movably connected between the adjusting mechanisms and the auxiliary shaft. The outer ends of the adjusting mechanisms are clamped with four groups of sprocket plates. The sides of the main shaft and the auxiliary shaft away from each other are respectively fixedly connected with transmission mechanisms. The adjusting mechanisms can stabilize the positions of the main shaft and the auxiliary shaft, rotate the shaft center rods, and drive the main shaft and the auxiliary shaft to separate or approach each other through the transmission between the threaded grooves on the surfaces of the shaft center rods and the inner sides of the pyramid columns. Meanwhile, the outer ends of the pyramid columns and the sliding grooves at the bottoms of the clamping frames can be matched and slid, so that the clamping frames are driven to expand outward, the clamping frames and the sprocket plates are better clamped, and the matching precision is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sprocket shaft set devices, and particularly relates to a tail turning sprocket shaft of a scraper conveyor. BACKGROUND

[0002] The sprocket shaft is also called a sprocket shaft set, which is a mechanical device for driving the movement of a chain of a mine transportation or coal mining device, and is often used in a scraper conveyor. The sprocket shaft is installed at two ends of a conveyor or a transfer machine, and is generally mainly composed of a sprocket shaft, a sprocket, a rolling bearing, a sealing device, a fastening device and other auxiliary components. As one of the most important components of the conveyor, the sprocket shaft needs to have a high torque transmission effect to ensure that the sprocket can normally turn.

[0003] However, in the prior art, the shaft body in the existing sprocket shaft set is generally directly fixed between the sprocket tooth disc. The sprocket tooth disc is a wearing part and needs to be replaced and maintained after a long time of use. However, the existing sprocket shaft set installation structure makes the sprocket shaft not easy to disassemble and replace. In addition, there is a difference in cooperation between the sprocket tooth disc and the new sprocket shaft, and the installation is not firm. In addition, the existing sprocket shaft set is directly fixed between the shaft body through bolts at both ends, and the torsional force is directly applied to the connected bolts, which causes the bolts to deform after a long time, thereby further increasing the difficulty of disassembly and splitting. SUMMARY

[0004] The present application aims to solve the problems of the prior art, such as the sprocket not being easy to disassemble and maintain, poor maintenance matching accuracy and easy damage of the bolts at both ends of the sprocket shaft, and provides a tail turning sprocket shaft of a scraper conveyor.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a tail turning sprocket shaft of a scraper conveyor, comprising a main shaft and a secondary shaft, the opposite sides of the main shaft and the secondary shaft are provided with adjusting mechanisms, and the main shaft is movably connected between the secondary shaft through the adjusting mechanisms, the outer end of the adjusting mechanism is clamped with four groups of sprocket discs, and the sides away from each other of the main shaft and the secondary shaft are respectively fixedly connected with transmission mechanisms.

[0006] As a preferred embodiment, the adjusting mechanism comprises a pyramid column, six groups of clamping frames, a sliding groove, a limiting sliding block, a shaft rod and a threaded groove. The sliding groove is arranged at the bottom of the clamping frame, the clamping frame is movably connected to the surface of the pyramid column through the sliding groove, the limiting sliding block is fixedly connected to one side of the clamping frame, and the threaded groove is arranged on the surface of the shaft rod, and the shaft rod is threadedly connected to the inner side of the pyramid column through the threaded groove.

[0007] As a preferred embodiment, the pyramid column is fixedly connected to the side of the secondary shaft close to the main shaft, the clamping frame is movably connected to the side of the main shaft close to the secondary shaft through the limiting sliding block, and the top of the clamping frame is clamped with the inner side of the sprocket disc through a clamping groove.

[0008] As a preferred implementation, the two ends of the shaft rod are movably connected with the main shaft and the auxiliary shaft respectively, and the shaft rod penetrates the pyramid column, the two ends of the shaft rod are threadedly connected with the limiting nuts respectively, the outer end surface of the pyramid column is beveled, and the sliding groove is attached to the outer end surface of the pyramid column.

[0009] As a preferred implementation, the transmission mechanism comprises an end face disc, a transmission pin, six groups of fixing bolts, a stress convex and a butt joint groove, the transmission pin and the stress convex are fixedly connected to the left and right sides of the end face disc respectively, and the six groups of fixing bolts are annularly arranged on the surface of the end face disc.

[0010] As a preferred implementation, the butt joint groove is arranged at one end of the main shaft and the auxiliary shaft close to the end face disc, and the end face disc is inserted between the stress convex and the butt joint groove, and the end face disc is attached to the end faces of the main shaft and the auxiliary shaft.

[0011] As a preferred implementation, the end face disc is fixedly connected with the main shaft and the auxiliary shaft through the six groups of fixing bolts, and the stress convex is triangular in shape.

[0012] Compared with the prior art, the application has the following advantages and positive effects:

[0013] Firstly, the adjusting mechanism is arranged to stabilize the positions of the main shaft and the auxiliary shaft, rotate the shaft rod, and drive the main shaft and the auxiliary shaft to separate or approach each other through the transmission between the threaded grooves on the surface of the shaft rod and the inner side of the pyramid column, so that the outer end of the pyramid column and the sliding groove at the bottom of the clamping frame are matched and slid, the clamping frame is expanded outward, the clamping frame and the sprocket disc are better clamped, the matching precision is improved, and the separation of the main shaft and the auxiliary shaft is facilitated under the transmission of the pyramid column, so that the sprocket disc is conveniently maintained and replaced.

[0014] Secondly, the transmission mechanism is arranged, the end face disc is basically fixed with the main shaft or the auxiliary shaft through the fixing bolts, the stress convex on the surface of the end face disc is inserted and fixed with the butt joint groove when the end face disc is attached to the end faces of the main shaft and the auxiliary shaft, the transmission force received by the transmission pin can be directly transmitted to the main shaft or the auxiliary shaft through the stress convex, the stress on the fixing bolts is reduced or shared, and the damage of the fixing bolts due to excessive torsion is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the overall structure of the tail reversing sprocket shaft of the scraper conveyor.

[0016] Figure 2 The figure is a schematic diagram of the overall structure of the tail reversing sprocket shaft of the scraper conveyor.

[0017] Figure 3 Figure 1 is a schematic diagram of a half-section of an overall structure of a tail reversing sprocket shaft of a scraper conveyor according to the present application.

[0018] Figure 4 Figure 2 is a schematic diagram of a half-section of an overall structure of a tail reversing sprocket shaft of a scraper conveyor according to the present application. Figure 3 Figure 3 is a schematic diagram of an enlarged structure at point A.

[0019] Figure legend:

[0020] 1, main shaft; 2, auxiliary shaft; 3, adjusting mechanism; 301, pyramid column; 302, clamping frame; 303, sliding groove; 304, limiting sliding block; 305, shaft rod; 306, threaded groove; 4, sprocket disc; 5, transmission mechanism; 501, end face disc; 502, transmission pin; 503, fixing bolt; 504, stress convex; 505, butt joint groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0022] As shown in Figures 1-4 , the present application provides a technical solution: a tail reversing sprocket shaft of a scraper conveyor, comprising a main shaft 1 and an auxiliary shaft 2, the opposite sides of the main shaft 1 and the auxiliary shaft 2 are provided with an adjusting mechanism 3, and the main shaft 1 is movably connected between the adjusting mechanism 3 and the auxiliary shaft 2, the outer end of the adjusting mechanism 3 is clamped with four groups of sprocket discs 4, and the sides away from each other of the main shaft 1 and the auxiliary shaft 2 are respectively fixedly connected with a transmission mechanism 5.

[0023] In the present embodiment, when it is necessary to replace the sprocket disc 4, the transmission mechanism 5 can be disassembled, and then the adjusting mechanism 3 inside the main shaft 1 or the auxiliary shaft 2 is actuated, so that the separation effect between the main shaft 1 and the auxiliary shaft 2 is caused, at this time the sprocket disc 4 clamped at the outer end of the adjusting mechanism 3 can be normally loosened, so as to facilitate the replacement operation of the sprocket disc 4, and the fixation between the transmission mechanism 5 and the main shaft 1 and the auxiliary shaft 2 can improve the transmission of transmission power, prevent damage to the bolts, and thus facilitate subsequent disassembly and maintenance operations.

[0024] As shown in Figure 2 and Figure 4As shown, the adjusting mechanism 3 comprises a pyramid column 301, six sets of clamping frames 302, a sliding groove 303, a limiting sliding block 304, a shaft rod 305 and a threaded groove 306. The sliding groove 303 is arranged at the bottom of the clamping frame 302, the clamping frame 302 is slidably connected to the surface of the pyramid column 301 through the sliding groove 303, the limiting sliding block 304 is fixedly connected to one side of the clamping frame 302, the threaded groove 306 is arranged on the surface of the shaft rod 305, and the shaft rod 305 is threadedly connected to the inner side of the pyramid column 301. The pyramid column 301 is fixedly connected to the side of the secondary shaft 2 close to the main shaft 1, the clamping frame 302 is slidably connected to the side of the main shaft 1 close to the secondary shaft 2 through the limiting sliding block 304, and the top of the clamping frame 302 is clamped with the inner side of the sprocket 4 through a clamping groove. The two ends of the shaft rod 305 are movably connected between the main shaft 1 and the secondary shaft 2, the shaft rod 305 penetrates the pyramid column 301, the two ends of the shaft rod 305 are threadedly connected with limiting nuts, and the outer end surface of the pyramid column 301 is beveled, and the sliding groove 303 is fitted with the outer end surface of the pyramid column 301.

[0025] In this embodiment, first rotate the shaft rod 305 inside the main shaft 1 or the secondary shaft 2, the threaded groove 306 on the surface of the shaft rod 305 and the pyramid column 301 are in threaded transmission, and the pyramid column 301 is fixedly connected with the secondary shaft 2, so that only the rotation of the main shaft 1 and the secondary shaft 2 is limited, and the separation of the main shaft 1 and the secondary shaft 2 is realized. When the main shaft 1 and the secondary shaft 2 are separated, the sliding of the pyramid column 301 and the inner sliding groove 303 of the clamping frame 302 is realized, at this time the clamping frame 302 is contracted inward under the action of the limiting sliding block 304, so that the sprocket 4 is convenient to disassemble and replace, and the sliding operation can better realize the clamping cooperation of the clamping frame 302 and the new sprocket 4, and improve the clamping fixing accuracy.

[0026] As shown in Figure 2 and Figure 3 , the transmission mechanism 5 comprises an end face disc 501, a transmission pin 502, six sets of fixed studs 503, a stress convex 504 and a butt joint groove 505. The transmission pin 502 and the stress convex 504 are fixedly connected to the left and right sides of the end face disc 501 respectively, and the six sets of fixed studs 503 are arranged in a ring array about the surface of the end face disc 501. The butt joint groove 505 is arranged at one end of the main shaft 1 and the secondary shaft 2 close to the end face disc 501, and the end face disc 501 is inserted between the stress convex 504 and the butt joint groove 505, and the end face disc 501 is fitted with the end faces of the main shaft 1 and the secondary shaft 2. The end face disc 501 is fixedly connected between the main shaft 1 and the secondary shaft 2 through the six sets of fixed studs 503, and the stress convex 504 is triangular in shape.

[0027] In this embodiment, the end face disc 501 is fixed by six groups of annular array distribution of fixing pins 503 to achieve the basic fixing effect, to ensure the stability between the main shaft 1 or the auxiliary shaft 2, and when the end face disc 501 is attached to the end face of the main shaft 1 or the auxiliary shaft 2, the stress convex 504 can be normally connected between the butt joint groove 505, so that the transmission force effect can directly drive the stress convex 504 to rotate after the transmission pin 502 is subjected to the motor transmission force, and the stress convex 504 drives the main shaft 1 and the auxiliary shaft 2 to rotate in cooperation with the butt joint groove 505, so that the transmission force acting on the surface of the fixing pin 503 is shared, effectively preventing the fixing pin 503 from being damaged to cause the subsequent difficult disassembly.

[0028] Working principle: when the chain wheel disc 4 needs to be replaced, first twist the fixing pin 503 in the transmission mechanism 5, so that the end face disc 501 is separated from the main shaft 1 or the auxiliary shaft 2, then the shaft rod 305 in the adjusting mechanism 3 is actuated, the threaded groove 306 on the surface of the shaft rod 305 can realize the threaded transmission between the pyramid column 301, and the pyramid column 301 is fixed with the auxiliary shaft 2, so that only the main shaft 1 and the auxiliary shaft 2 need to be stabilized to realize the separation between the main shaft 1 and the auxiliary shaft 2, and at the same time of separation, the pyramid column 301 surface and the sliding groove 303 between the bottom of the clamping frame 302 occur sliding, the sliding surface is inclined, so that the clamping frame 302 can slide in the inside of the main shaft 1 through the limiting sliding block 304 when it is separated from the pyramid column 301, so as to realize the separation between the outer end of the clamping frame 302 and the chain wheel disc 4, the separation effect is similar to the inclined wedge transmission effect, which can improve the matching clamping precision when the new chain wheel disc 4 is installed, and prevent the chain wheel disc 4 from shaking on the top of the clamping frame 302, and when the end face disc 501 is installed on the end face of the main shaft 1 and the auxiliary shaft 2 again, the stress convex 504 is connected with the butt joint groove 505, so that the transmission force of the transmission pin 502 can be directly transmitted by the stress convex 504, thereby preventing the fixing pin 503 from being damaged, and facilitating the subsequent disassembly and maintenance operation.

[0029] The above is only the preferred embodiment of the present application, not other forms of the present application, any skilled in the art can use the above disclosed technical content to make changes or modifications into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the present application.

Claims

1. A tail-end redirecting sprocket shaft for a scraper conveyor, comprising a main shaft (1) and a secondary shaft (2), characterized in that: An adjustment mechanism (3) is provided on the opposite side of the main shaft (1) and the secondary shaft (2), and the main shaft (1) is movably connected to the secondary shaft (2) through the adjustment mechanism (3). Four sets of sprocket discs (4) are snapped onto the outer end of the adjustment mechanism (3). A transmission mechanism (5) is fixedly connected to the side of the main shaft (1) and the secondary shaft (2) that are far apart from each other. The adjustment mechanism (3) includes a pyramidal prism (301), six sets of card holders (302), a slide groove (303), a limiting slider (304), a central rod (305), and a threaded groove (306). The slide groove (303) is opened at the bottom of the card holder (302), and the card holder (302) is slidably connected to the surface of the pyramidal prism (301) through the slide groove (303). The limiting slider (304) is fixedly connected to one side of the card holder (302). The threaded groove (306) is opened on the surface of the central rod (305), and the central rod (305) is threadedly connected to the inner side of the pyramidal prism (301) through the threaded groove (306). The pyramidal prism (301) is fixedly connected to the side of the secondary shaft (2) near the main shaft (1), and the bracket (302) is slidably connected to the side of the main shaft (1) near the secondary shaft (2) through the limiting slider (304). The top of the bracket (302) is engaged with the inner side of the sprocket disc (4) through the slot. The two ends of the shaft (305) are movably connected to the main shaft (1) and the secondary shaft (2) respectively, and the shaft (305) passes through the pyramidal column (301). The two ends of the shaft (305) are threaded with limit nuts respectively. The outer end surface of the pyramidal column (301) is inclined, and the slide groove (303) fits against the outer end surface of the pyramidal column (301).

2. The tail sprocket shaft of a scraper conveyor according to claim 1, characterized in that: The transmission mechanism (5) includes an end face plate (501), a transmission pin (502), six sets of fixing bolts (503), a force-bearing protrusion (504), and a docking groove (505). The transmission pin (502) and the force-bearing protrusion (504) are respectively fixedly connected to the left and right sides of the end face plate (501). The six sets of fixing bolts (503) are arranged in a ring array about the surface of the end face plate (501).

3. The tail sprocket shaft of a scraper conveyor according to claim 2, characterized in that: The docking grooves (505) are respectively opened at one end of the main shaft (1) and the secondary shaft (2) near the end face plate (501), and the end face plate (501) is inserted into the docking groove (505) through the force-bearing protrusion (504). The end face plate (501) is in contact with the end face of the main shaft (1) and the secondary shaft (2).

4. The tail sprocket shaft of a scraper conveyor according to claim 3, characterized in that: The end face plate (501) is fixedly connected to the main shaft (1) and the secondary shaft (2) respectively by six sets of fixing bolts (503), and the force-bearing protrusion (504) is triangular in shape.

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