Transmission device for intermediate drive scraper conveyor and scraper conveyor

Abstract

The present invention provides a transmission device for an intermediate drive scraper conveyor, which belongs to the technical field of scraper conveyors and includes a sprocket, a scraper chain, a tongue plate, a chain pressure device, a transition shaft, a transition sleeve, and a fixed sleeve. The sprocket is located below the scraper chain, the tongue plate is located above the scraper chain, the chain pressure device is located above the scraper chain, the two ends of the transition shaft are each sleeved with a transition sleeve and then inserted into the sprocket, the fixed sleeve is fixed on the transition shaft and located between the transition sleeves at both ends, the scraper chain is laid from the loading end of the scraper conveyor to the sprocket, and then from the sprocket to the unloading end of the scraper conveyor, and then laid to the loading end, finally forming a closed chain. The present invention also provides a scraper conveyor including the above-mentioned transmission device. Usually, the chain wrap angle of the scraper conveyor is close to 180°. The scraper chain of the present invention adopts a straight line through the sprocket in a similar straight manner, and the transmission part is close to the height of a normal scraper conveyor, and effectively avoids the phenomenon of "S-shaped" winding chain returning coal and stacking during operation.

Description

Technical Field

[0001] The invention relates to the technical field of scraper conveyors, in particular to a transmission device for an intermediate drive scraper conveyor and the scraper conveyor. Background Art

[0002] Scraper conveyor is a continuous action transport machine with a flexible body as the traction mechanism. Scraper conveyor is mainly used in longwall coal mining face. It is the only transportation equipment in longwall coal mining face at present. It can also be used in mining area drift, contact hole, mining area up and down the mountain and excavation face, etc. It mainly undertakes the task of coal transportation. In addition, the role of scraper conveyor is not only to transport coal and materials, but also to serve as the running track of coal mining machine. Therefore, it has become an indispensable main equipment in modern coal mining technology. If the scraper conveyor can maintain continuous operation, production can proceed normally. Otherwise, the entire coal mining face will be shut down, causing the entire production to be interrupted.

[0003] At present, domestic scraper conveyors are mainly composed of transmission devices, troughs, and tails. The transmission device is the power part of the entire scraper conveyor. For scraper conveyors used in special environments, since traditional scraper conveyors have transmission devices arranged at one or both ends, when facing special working conditions such as tunnel undercover operations and repairs, traditional scraper conveyors will have difficulty in installation due to the large area occupied at both ends. Therefore, it is necessary to set the transmission device in the middle of the scraper conveyor, such as Figure 1 As shown, the intermediate drive scraper conveyor is mainly composed of a loader tail 1, a transmission device 2, a trough body, a scraper chain, an unloader tail 3, etc.

[0004] For example, in the Chinese invention patent application "A Scraper Conveyor" with publication number CN107215621A, the drive unit is arranged in the middle. After the scraper chain passes through the transmission device sprocket, the transmission chain roller, the loader tail chain roller, and the unloader tail chain roller, the chain presents an "S-shaped" winding layout at the sprocket, forming an infinitely circulating scraper chain traction mechanism, such as Figure 2-3 As shown, the arrow indicates the running direction of the scraper chain. After the scraper chain passes around the transmission sprocket 21, the transmission roller 22, the loader tail roller 11, and the unloader tail roller 31, the scraper chain presents an "S-shaped" winding layout at the transmission sprocket, forming an infinitely circulating scraper chain traction mechanism. However, this "S-shaped" winding method increases the height of the transmission device, and the scraper chain has the phenomenon of backflow coal stacking during operation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a transmission device for an intermediate drive scraper conveyor, so that the transmission device is close to the height of a normal scraper conveyor, effectively avoiding the phenomenon of backflow coal stacking during the operation of the scraper chain.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A transmission device for an intermediate drive scraper conveyor, comprising: a sprocket, a scraper chain, a tongue plate, a chain pressing device, a transition shaft, a transition sleeve, and a fixed sleeve; the sprocket is located below the scraper chain, the tongue plate is located below the scraper chain, the chain pressing device is located above the scraper chain, both ends of the transition shaft are respectively sleeved with the transition sleeves and then inserted into the sprocket, and the fixed sleeve is fixed on the transition shaft and located between the transition sleeves at both ends;

[0008] The scraper chain is laid from the loading end of the scraper conveyor to the sprocket, then laid from the sprocket to the unloading end of the scraper conveyor, and then laid to the loading end, finally forming a closed chain.

[0009] Beneficial effects: Usually, the chain wrap angle of a scraper conveyor is close to 180°. The scraper chain of the present invention adopts a straight line through the sprocket in a similar straight manner, and the transmission part is close to the height of a normal 40T scraper conveyor. At the same time, it takes into account the characteristics of the "S-type" winding method that can be installed anywhere in the scraper conveyor, and reduces the tensioning matching devices of the manual pump and small jack for redirecting the roller, and effectively avoids the phenomenon of "S-type" winding chain turning back and stacking coal during operation. In addition, the tongue plate is located above the sprocket. During the operation of the scraper chain, the scraper of the scraper conveyor can pass directly from the top of the tongue plate, thereby effectively reducing the coal leakage phenomenon. The chain pressing device can prevent the chain from jumping at the sprocket to ensure the stability of the scraper chain operation.

[0010] Furthermore, the tongue plate is in an arc shape as a whole, and the tongue plate as a whole spans over the top of the sprocket, and is only grooved at the sprocket to expose the sprocket.

[0011] Beneficial effect: The tongue plate adopts an overall arc curved shape. The tongue plate as a whole crosses over the top of the sprocket, and only a groove is opened at the sprocket to expose the sprocket. There is no need to change the installation position of the sprocket. The scraper can still pass over the tongue plate normally, which can effectively reduce the coal leakage of the scraper chain during operation.

[0012] Furthermore, one end of the sprocket is provided with a countersunk hole, and one end of the transition sleeve is embedded in the countersunk hole.

[0013] Furthermore, a plurality of second keyways and second fixing keys are evenly distributed on the outer circumference of the transition shaft, and a plurality of third keyways and third fixing keys are evenly distributed on the inner circumference of the transition sleeve; the second keyway cooperates with the third fixing key, and the second fixing key cooperates with the third keyway.

[0014] Beneficial effect: Since the tongue plate adopts an integral structure, the half-roller originally used for fixing and torque transmission needs to be improved. The present invention overcomes the defects caused by directly reducing the diameter of the half-roller, and adopts a transition shaft, a transition sleeve, a fixed sleeve and a sprocket to transmit force, which can not only meet the space requirements but also ensure a certain strength.

[0015] Furthermore, it also includes a motor, a friction coupler and a reducer, the output shaft of the motor is connected to the friction coupler, the friction coupler is connected to the reducer, and the output shaft of the reducer is connected to the sprocket.

[0016] Furthermore, a plurality of first keyways and first fixed keys are evenly distributed on the inner circumference of the sprocket, both ends of the transition shaft do not completely pass through the transition sleeve, and the output shaft of the reducer cooperates with the first keyway, the first fixed key, the third keyway and the third fixed key.

[0017] Beneficial effects: In the present invention, the output shaft, sprocket, transition shaft and transition sleeve of the reducer are connected by keyways and fixed keys, which are convenient for disassembly and assembly, and the power transmission is stable.

[0018] Furthermore, the fixing sleeve is semicircular.

[0019] Furthermore, a circular hole is formed on the outside of the fixing sleeve, and the fixing sleeve is fixed to the transition shaft by bolts.

[0020] Beneficial effect: The fixing sleeve of the present invention is semicircular and fixed on the transition shaft by bolts, which makes it easy to remove the fixing sleeve. After the fixing sleeve is removed, there is a certain amount of room for disassembly and assembly of the sprocket assembly, which facilitates disassembly and assembly of the sprocket assembly during use.

[0021] The present invention also provides a scraper conveyor including the transmission device for the intermediate drive scraper conveyor.

[0022] Furthermore, the transmission device is arranged at a height close to that of a normal scraper conveyor, the scraper chain passes through the sprocket in a straight manner, the tongue plate is located above the sprocket, and during the operation of the scraper chain, the scraper of the scraper conveyor passes directly over the tongue plate, and the two sprockets are connected and fixed by the transition shaft, transition sleeve and fixed sleeve.

[0023] Compared with the prior art, the present invention provides a transmission device for an intermediate drive scraper conveyor, which has the following beneficial effects:

[0024] 1. Usually, the chain wrap angle of the scraper conveyor is close to 180°. The scraper chain of the present invention adopts a straight line through the sprocket in a similar straight manner. The transmission part is close to the height of the normal 40T scraper conveyor. At the same time, the "S-type" winding method can be installed anywhere in the scraper conveyor, and the manual pump and small jack are reduced to carry out the tensioning matching device of the redirecting roller, and the phenomenon of the "S-type" winding chain turning back and stacking coal during operation is effectively avoided. In addition, the tongue plate is located above the sprocket. During the operation of the scraper chain, the scraper of the scraper conveyor can pass directly from the top of the tongue plate, thereby effectively reducing the coal leakage phenomenon. The chain pressing device can prevent the chain from jumping at the sprocket to ensure the stability of the scraper chain operation.

[0025] 2. The tongue plate adopts an overall arc curved shape. The tongue plate as a whole crosses over the top of the sprocket, and only a groove is opened at the sprocket to expose the sprocket. There is no need to change the installation position of the sprocket. The scraper can still pass over the tongue plate normally, which can effectively reduce the coal leakage of the scraper chain during operation.

[0026] 3. Since the tongue plate adopts an integral structure, the half-roller originally used for fixing and torque transmission needs to be improved. The present invention overcomes the defects caused by directly reducing the diameter of the half-roller, and adopts a transition shaft, a transition sleeve, a fixed sleeve and a sprocket to transmit force, which can not only meet the space requirements but also ensure a certain strength.

[0027] 4. The output shaft, sprocket, transition shaft and transition sleeve of the reducer of the present invention are connected by keyways and fixed keys, which are convenient for disassembly and assembly and stable for power transmission.

[0028] 5. The fixing sleeve in the present invention is semicircular and fixed on the transition shaft by bolts, which makes it easy to remove the fixing sleeve. After the fixing sleeve is removed, there is a certain amount of room for disassembly and assembly of the sprocket assembly, which facilitates disassembly and assembly of the sprocket assembly during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the intermediate drive scraper conveyor in the background technology;

[0030] Figure 2 It is a schematic diagram of the operation of the transmission scraper chain of the intermediate drive scraper conveyor in the background technology;

[0031] Figure 3 It is a schematic diagram of the structure of the transmission device of the intermediate drive scraper conveyor in the background technology;

[0032] Figure 4 It is a schematic diagram of the relative positions of the tongue plate and the sprocket of the intermediate drive scraper conveyor in the background technology;

[0033] Figure 5 This is a schematic diagram of the scraper chain operation of the intermediate drive scraper conveyor of the present invention.

[0034] Figure 6 It is a front view of the transmission device of the intermediate drive scraper conveyor of the present invention;

[0035] Figure 7 is a top view of the transmission device of the intermediate drive scraper conveyor of the present invention;

[0036] Figure 8 It is a three-dimensional diagram of the assembly of the sprocket and the transition sleeve in the transmission device of the intermediate drive scraper conveyor of the present invention;

[0037] Fig. 9 It is a three-dimensional view of a sprocket in a transmission device of an intermediate drive scraper conveyor of the present invention;

[0038] Fig.10 It is a three-dimensional diagram of the assembly of the transition shaft and the transition sleeve in the transmission device of the intermediate drive scraper conveyor of the present invention;

[0039] Fig.11 It is a three-dimensional diagram of a transition shaft in a transmission device of an intermediate drive scraper conveyor of the present invention;

[0040] Fig.12 It is a three-dimensional diagram of a transition sleeve in a transmission device of an intermediate drive scraper conveyor of the present invention;

[0041] Fig.13 It is a three-dimensional view of a fixed sleeve in a transmission device of an intermediate drive scraper conveyor of the present invention;

[0042] In the figure: 1 loader tail, 11 loader tail roller, 2 transmission device, 21 transmission sprocket, 22 transmission roller, 3 unloading tail, 31 unloading tail roller, 5 original tongue plate, 6 half roller, 10 loading end, 20 sprocket, 201 countersunk hole, 202 first keyway, 203 first fixed key, 30 unloading end, 40 scraper chain, 50 tongue plate, 60 chain pressure device, 70 transition shaft, 71 second keyway, 72 second fixed key, 80 transition sleeve, 81 third keyway, 82 third fixed key, 90 fixed sleeve, 91 round hole. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0045] Example 1

[0046] See also Figure 4 At present, the original tongue plate 5 of the scraper conveyor is a half-side structure, and the installation position is slightly lower than or tangent to the surface of the half-drum 6 connecting the two transmission sprockets 21. When the scraper chain runs through the transmission sprocket 21, coal will leak from the gap between the half-drum 6 and the original tongue plate 5. At the same time, when the half-drum 6 rotates, coal slag will also leak from the bolt installation notch connecting the two half-drums 6.

[0047] A transmission device for an intermediate drive scraper conveyor, such as Figure 5-6 As shown, it includes a sprocket 20, a scraper chain 40, a tongue plate 50, a chain pressing device 60, a transition shaft 70, a transition sleeve 80, and a fixed sleeve 90. The sprocket 20 is located between the loading end 10 and the unloading end 30 of the scraper conveyor, and the sprocket 20 is located below the scraper chain 40. The tongue plate 50 is an arc-shaped body. Figure 7 The tongue plate 50 as a whole crosses over the top of the sprocket 20, and only a groove is opened at the sprocket 20 to expose the sprocket 20. A space for the tongue plate 50 to pass through is reserved between the two sprockets 20. During the operation of the scraper chain 40, the scraper of the scraper conveyor can directly pass over the tongue plate 50, thereby effectively reducing the coal leakage phenomenon. The tongue plate 50 is fixed to the drive frame of the scraper conveyor as follows: there are two cross beams in the middle of the two side plates of the drive frame, and the tongue plate is supported on the cross beams and fixed to the cross beams by latches.

[0048] Continue reading Figure 6 The chain pressing device 60 is located above the sprocket 20 and fixed on the driving frame, which can prevent the chain from jumping at the sprocket 20 and ensure the stability of the scraper chain 40.

[0049] Continue reading Figure 5 The scraper chain 40 is laid from the loading end 10 of the scraper conveyor to the sprocket 21, then from the sprocket 21 to the unloading end 30 of the scraper conveyor, and then to the loading end 10, finally forming a closed chain. Usually, the chain wrap angle of the scraper conveyor is close to 180°. The scraper chain 40 of the present invention adopts a straight line through the sprocket 20 in a similar straight manner, and the transmission part is close to the height of the normal 40T scraper conveyor. At the same time, it takes into account the characteristics of the "S-type" winding method that can be installed anywhere in the scraper conveyor, reduces the redirection roller and the corresponding tensioning matching device, and effectively avoids the phenomenon of the "S-type" winding method chain back-turning coal stacking during operation.

[0050] Continue reading Figure 3 Because the tongue plate 50 adopts an integral structure, the half roller 6 originally used for fixing and torque transmission needs to be improved to meet the space requirements and achieve a certain strength. If the diameter of the half roller 6 is directly reduced, the thickness of the half roller 6 will be slightly thinner and the strength will be insufficient. At the same time, the bolts cannot be fixed and cannot be used.

[0051] like Figure 8 As shown, the two sprocket wheels 20 are connected by a transition shaft 70. The transition shaft 70 is respectively sleeved with a transition sleeve 80 at both ends and then inserted into the sprocket wheels 20. The two transition sleeves 80 are fixed by two semicircular fixing sleeves 90 through bolts.

[0052] In this embodiment, the transmission device also includes a motor, a friction coupler and a reducer. The output shaft of the motor is connected to the friction coupler, the friction coupler is connected to the reducer, the output shaft of the reducer is connected to the center of the sprocket 20, the transmission device drives the sprocket 20 to rotate, and the sprocket 20 drives the scraper chain 40 to operate to complete the coal transportation operation.

[0053] Specifically, Fig. 9 As shown, one end of the sprocket 20 has a countersunk hole 201, and the inner circumference of the sprocket 20 is evenly distributed with a plurality of first key grooves 202 and first fixed keys 203, as shown in FIG. Figure 10-12 As shown, a plurality of second key grooves 71 and second fixed keys 72 are evenly distributed on the outer circumference of the transition shaft 70, and a plurality of third key grooves 81 and third fixed keys 82 are evenly distributed on the inner circumference of the transition sleeve 80. Fig.13 As shown, there is a circular hole 91 on the outside of the semicircular fixing sleeve 90. During specific assembly, the two fixing sleeves 90 are fixed to the middle part of the transition shaft 70 by bolt sleeves, and the two ends of the transition shaft 70 are inserted into the transition sleeve 80. The two ends of the transition shaft 70 do not completely pass through the transition sleeve 80, and there are spare sections at both ends of the transition shaft 70. The second keyway 71 cooperates with the third fixing key 82, and the second fixing key 72 cooperates with the third keyway 81. The end of the transition sleeve 80 with the spare section is embedded in the countersunk hole 201 at one end of the sprocket 20. After assembly, the output shafts and blind shafts of the reducers on both sides are inserted into the sprocket 20 and the spare section of the transition sleeve 80, and cooperate with the first keyway 202, the first fixing key 203, the third keyway 81 in the spare section, and the third fixing key 82 in the spare section to transmit power.

[0054] The entire sprocket assembly is stable when located in the drive frame. When taken out separately, the sprocket 20 can be directly removed from both sides. The fixing sleeve 90 is for the convenience of disassembly and assembly of the sprocket assembly in subsequent use. After the fixing sleeve 90 is removed, there is a certain amount of room for disassembly and assembly of the sprocket assembly.

[0055] Example 2

[0056] This embodiment is a scraper conveyor, including the transmission device for the intermediate drive scraper conveyor in Example 1.

[0057] When the scraper conveyor in this embodiment is used, the transmission device can be arranged at a height close to that of a normal scraper conveyor, and the scraper chain 40 passes through the sprocket 20 in a straight line in a similar straight manner, which effectively avoids the phenomenon of "S-shaped" winding chain turning back and stacking coal during operation. The tongue plate 50 as a whole crosses over the top of the sprocket 20. During the operation of the scraper chain 40, the scraper of the scraper conveyor can pass directly over the tongue plate 50, thereby effectively reducing the coal leakage phenomenon. The two sprockets 20 are connected and fixed by the transition shaft 70, the transition sleeve 80 and the fixed sleeve 90, which can not only meet the space requirements, but also ensure a certain strength.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission device for an intermediate drive scraper conveyor, characterized in that: include: A sprocket (20), a scraper chain (40), a tongue plate (50), a chain pressing device (60), a transition shaft (70), a transition sleeve (80), and a fixed sleeve (90); the sprocket (20) is located below the scraper chain (40), the tongue plate (50) is located below the scraper chain (40), the tongue plate (50) is in an arc shape as a whole, the tongue plate (50) as a whole crosses over the top of the sprocket (20), and is only grooved at the sprocket (20) to expose the sprocket (20), the chain pressing device (60) is located above the scraper chain (40), both ends of the transition shaft (70) are respectively sleeved with transition sleeves (80) and then inserted into the sprocket (20), and the fixed sleeve (90) is fixed on the transition shaft (70) and is located between the transition sleeves (80) at both ends; The scraper chain (40) is laid from the loading end (10) of the scraper conveyor to the sprocket (20), then laid from the sprocket (20) to the unloading end (30) of the scraper conveyor, and then laid to the loading end (10), finally forming a closed chain.

2. A transmission device for an intermediate drive scraper conveyor according to claim 1, characterized in that: One end of the sprocket (20) is provided with a countersunk hole (201), and one end of the transition sleeve (80) is embedded in the countersunk hole (201).

3. A transmission device for an intermediate drive scraper conveyor according to claim 2, characterized in that: A plurality of second key grooves (71) and second fixed keys (72) are evenly distributed on the outer circumference of the transition shaft (70), and a plurality of third key grooves (81) and third fixed keys (82) are evenly distributed on the inner circumference of the transition sleeve (80); the second key groove (71) cooperates with the third fixed key (82), and the second fixed key (72) cooperates with the third key groove (81).

4. The transmission device for an intermediate drive scraper conveyor according to claim 3, characterized in that: It also includes a motor, a friction coupler and a reducer, wherein the output shaft of the motor is connected to the friction coupler, the friction coupler is connected to the reducer, and the output shaft of the reducer is connected to a sprocket (20).

5. The transmission device for an intermediate drive scraper conveyor according to claim 4, characterized in that: A plurality of first keyways (202) and first fixed keys (203) are evenly distributed on the inner circumference of the sprocket (20), the two ends of the transition shaft (70) do not completely pass through the transition sleeve (80), and the output shaft of the reducer cooperates with the first keyway (202), the first fixed key (203), the third keyway (81) and the third fixed key (82).

6. The transmission device for an intermediate drive scraper conveyor according to claim 3, characterized in that: The fixing sleeve (90) is semicircular.

7. The transmission device for an intermediate drive scraper conveyor according to claim 6, characterized in that: The fixing sleeve (90) has a circular hole (91) on the outside, and the fixing sleeve (90) is fixed on the transition shaft (70) by means of bolts.

8. A scraper conveyor, characterized in that: The scraper conveyor comprises the transmission device for an intermediate drive scraper conveyor according to any one of claims 1-7.

9. A scraper conveyor according to claim 8, characterized in that: The transmission device is arranged at a height close to that of a normal scraper conveyor. The scraper chain (40) passes through the sprocket (20) in a straight manner similar to a straight manner. The tongue plate (50) is located above the sprocket (20). During the operation of the scraper chain (40), the scraper of the scraper conveyor passes directly above the tongue plate (50). The two sprockets (20) are connected and fixed by a transition shaft (70), a transition sleeve (80) and a fixed sleeve (90).

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