Wheel type chain supporting device of scraper conveyor

Abstract

The wheel type chain supporting device comprises a left bearing seat, a right bearing seat, a rotating shaft, a left supporting wheel and a right supporting wheel, the left end of the rotating shaft penetrates through the left side wall of a machine shell and is rotationally connected into the left bearing seat through a left bearing, and the right end of the rotating shaft penetrates through the right side wall of the machine shell and is rotationally connected into the left bearing seat through a right bearing. The top of the left supporting wheel is in rolling connection with the bottom face of the upper half portion of the left scraper chain, and the top of the right supporting wheel is in rolling connection with the bottom face of the upper half portion of the right scraper chain. According to the utility model, the operation of the scraper chain bypassing the head wheel reaches a stable state, the phenomenon of abrasion between the scraper chain and a track is avoided, the stress phenomenon of the scraper chain bypassing the head wheel is improved, the abrasion of the scraper chain is reduced, and the noise generated when the head wheel and the scraper chain are separated from each other is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of scraper conveyors, and in particular relates to a wheel type chain supporting device for a scraper conveyor. Background Art

[0002] The scraper conveyor track chain support device refers to when the scraper chain of the scraper conveyor passes the head wheel and is about to leave the head wheel, due to the centripetal inertia of the scraper chain's circular motion and the effect of the head wheel teeth, the scraper chain has a tendency to continue to move in a circle around the head wheel. For many years, the track chain support device has been used. When the scraper chain is separated from the head wheel, the chain running track is forcibly extended into the head wheel to connect the scraper chain. The disadvantage of this structure during use is: since the tongue of the chain running track extends into the head wheel and forcibly leads the scraper chain out of the meshing state of the head wheel, the scraper chain will generate a reaction force on the chain running track. This reaction force will continue to gnaw at the track and generate downward pressure on the chain running track. If it lasts for a long time, the chain running track will either be crushed or worn out; at the same time, the scraper chain is also subject to greater wear, reduced strength, and shortened service life. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a wheel type chain supporting device for a scraper conveyor which has a simple structure and reduces impact and wear.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a scraper conveyor wheel chain support device, including a left bearing seat, a right bearing seat, a rotating shaft, a left supporting wheel and a right supporting wheel, the rotating shaft is parallel to and adjacent to the wheel shaft of the head wheel of the scraper conveyor, the wheel shaft is located between the chain running track and the head wheel of the scraper conveyor, the left bearing seat is fixedly arranged on the left outer wall of the casing of the scraper conveyor, the right bearing seat is fixedly arranged on the right outer wall of the casing of the scraper conveyor, the left end of the rotating shaft passes through the left wall of the casing through the left shaft The bearing is rotatably connected in the left bearing seat, and the right end of the rotating shaft passes through the right side wall of the casing and is rotatably connected in the left bearing seat through the right bearing. The left supporting wheel and the right supporting wheel are fixedly installed on the rotating shaft, and the left supporting wheel and the right supporting wheel correspond to the left scraper chain and the right scraper chain of the scraper conveyor respectively. The outer circle top of the right supporting wheel of the left supporting wheel is lower than the top surface of the chain running track, the top of the left supporting wheel is rollingly connected to the bottom surface of the upper half of the left scraper chain, and the top of the right supporting wheel is rollingly connected to the bottom surface of the upper half of the right scraper chain.

[0005] The rotating shaft is composed of a left section, a middle section and a right section in sequence along the length direction. The diameter of the left section is smaller than that of the middle section, and the diameter of the left section is equal to that of the right section. The left supporting wheel is coaxially installed on the left section of the rotating shaft, and the right supporting wheel is coaxially installed on the right section of the rotating shaft. The inner circle of the left supporting wheel and the outer circle of the left section of the rotating shaft, as well as the inner circle of the right supporting wheel and the outer circle of the right section of the rotating shaft are all connected through flat key transmission. The left section of the rotating shaft is threadedly connected with a left nut, the left nut is crimped to the left end face of the left supporting wheel, and the right end face of the left supporting wheel is crimped to the left end annular surface of the middle section of the rotating shaft. The right section of the rotating shaft is threadedly connected with a right nut, the right nut is crimped to the right end face of the right supporting wheel, and the left end face of the right supporting wheel is crimped to the right end annular surface of the middle section of the rotating shaft.

[0006] The outer circle of the left supporting wheel is provided with two left guide limit rings, and the lower part of the left scraper chain runs between the two left guide limit rings. The outer circle of the right supporting wheel is provided with two right guide limit rings, and the lower part of the right scraper chain runs between the two right guide limit rings.

[0007] By adopting the above technical scheme, the utility model removes a section of chain running track after the two scraper chains are separated from the head wheel, releases the instantaneous impact pressure of the head wheel on the two scraper chains and the centripetal force of the scraper chains around the head wheel when the two scraper chains are disengaged from the head wheel, and allows the two scraper chains to naturally run downward under the action of the head wheel meshing and the centripetal force. After these forces are released, the two scraper chains will naturally droop. At this time, a left supporting wheel and a right supporting wheel are arranged in front of the operation of the two scraper chains, and the two scraper chains move forward between the two left guide limit rings of the left supporting wheel and the two right guide limit rings of the right supporting wheel respectively. The scraper chains move forward, the supporting wheels and the rotating shaft rotate, and rolling friction and no impact force are generated, thereby greatly reducing the wear of the scraper chains. After being supported and guided by the left and right supporting wheels, the scraper chains are guided to the chain running track and enter into a normal operating state, thereby completing a rolling guided chain supporting process without impact and wear.

[0008] The left supporting wheel and the right supporting wheel are connected to the rotating shaft through a flat key transmission, so that the left supporting wheel, the right supporting wheel and the rotating shaft rotate synchronously. The left nut and the right nut respectively locate the axial position of the left supporting wheel and the right supporting wheel, and by adding a gasket of appropriate thickness between the left supporting wheel and the left end surface of the middle section of the rotating shaft and / or between the right supporting wheel and the right end surface of the middle section of the rotating shaft, the axial position of the left supporting wheel and the right supporting wheel is adjusted to ensure the correspondence with the scraper chain, so that when the scraper chain moves along the supporting wheel, the left scraper chain and the right scraper chain are respectively located between the two left guide limit rings and between the two right guide limit rings, and no sliding friction is generated between the scraper chain and the guide limit ring.

[0009] The two left guide limit rings and the two right guide limit rings play the role of guiding the scraper chain, ensuring that the scraper chain smoothly enters the chain running track.

[0010] In summary, the utility model eliminates the impact and friction between the scraper chain and the original track by allowing the scraper chain to droop naturally and flexibly into the supporting wheel, thereby improving the working conditions, avoiding accidents caused by track damage of the track-type chain-off device, and ensuring the long-term stable operation of the equipment. The utility model allows the scraper chain to run around the head wheel in a stable state without the wear between the scraper chain and the track, improves the stress of the scraper chain when it passes around the head wheel, reduces the wear of the scraper chain, and reduces the noise when the head wheel and the scraper chain are off the chain. The utility model is also suitable for single-chain scraper conveyors. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 for Figure 1 Middle AA section view. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] like Figure 1-Figure 2 As shown, the scraper conveyor wheel chain supporting device of the utility model comprises a left bearing seat 1, a right bearing seat 2, a rotating shaft 3, a left supporting wheel 4 and a right supporting wheel 5. The rotating shaft 3 is parallel to and adjacent to the wheel shaft 7 of the head wheel 6 of the scraper conveyor. The wheel shaft 7 is located between the chain running track 8 and the head wheel 6 of the scraper conveyor. The left bearing seat 1 is fixedly arranged on the left outer wall of the casing 9 of the scraper conveyor, and the right bearing seat 2 is fixedly arranged on the right outer wall of the casing 9 of the scraper conveyor. The left end of the rotating shaft 3 passes through the left wall of the casing 9 and is rotatably connected to the left bearing seat through the left bearing. 1, the right end of the rotating shaft 3 passes through the right side wall of the casing 9 and is rotatably connected to the left bearing seat 1 through the right bearing, the left supporting wheel 4 and the right supporting wheel 5 are fixedly installed on the rotating shaft 3, the left supporting wheel 4 and the right supporting wheel 5 correspond to the left scraper chain 10 and the right scraper chain 11 of the scraper conveyor respectively, the outer circle top of the left supporting wheel 4 and the right supporting wheel 5 is lower than the top surface of the chain running track 8, the top of the left supporting wheel 4 is rollingly connected to the bottom surface of the upper half of the left scraper chain 10, and the top of the right supporting wheel 5 is rollingly connected to the bottom surface of the upper half of the right scraper chain 11.

[0015] The rotating shaft 3 is composed of a left section 12, a middle section 13 and a right section 14 along the length direction. The diameter of the left section 12 is smaller than that of the middle section 13, and the diameter of the left section 12 is equal to that of the right section 14. The left supporting wheel 4 is coaxially installed on the left section 12 of the rotating shaft 3, and the right supporting wheel 5 is coaxially installed on the right section 14 of the rotating shaft 3. The inner circle of the left supporting wheel 4 and the outer circle of the left section 12 of the rotating shaft 3, as well as the inner circle of the right supporting wheel 5 and the outer circle of the right section 14 of the rotating shaft 3 are all connected by flat key transmission. The left section 12 of the rotating shaft 3 is threadedly connected with a left nut 15, and the left nut 15 is pressed against the left end face of the left supporting wheel 4, and the right end face of the left supporting wheel 4 is pressed against the left end annular surface of the middle section 13 of the rotating shaft 3. The right section 14 of the rotating shaft 3 is threadedly connected with a right nut 16, and the right nut 16 is pressed against the right end face of the right supporting wheel 5, and the left end face of the right supporting wheel 5 is pressed against the right end annular surface of the middle section 13 of the rotating shaft 3.

[0016] The outer circle of the left supporting wheel 4 is provided with two left guide limit rings 17, and the lower part of the left scraper chain 10 runs between the two left guide limit rings 17. The outer circle of the right supporting wheel 5 is provided with two right guide limit rings 18, and the lower part of the right scraper chain 11 runs between the two right guide limit rings 18.

[0017] After the support and guidance of the left and right supporting wheels 4 and 5, the scraper chains are guided to the chain running track 8 and enter the normal operating state, thereby completing the rolling guide chain supporting process without impact and wear.

[0018] The left supporting wheel 4 and the right supporting wheel 5 are connected to the rotating shaft 3 through a flat key transmission, so that the left supporting wheel 4, the right supporting wheel 5 and the rotating shaft 3 rotate synchronously. The left nut 15 and the right nut 16 respectively locate the axial positions of the left supporting wheel 4 and the right supporting wheel 5, and by adding washers of appropriate thickness between the left supporting wheel 4 and the left end surface of the middle section 13 of the rotating shaft 3 and / or between the right supporting wheel 5 and the right end surface of the middle section 13 of the rotating shaft 3, the axial positions of the left supporting wheel 4 and the right supporting wheel 5 are adjusted to ensure the correspondence with the scraper chain, so that when the scraper chain moves along the supporting wheel, the left scraper chain 10 and the right scraper chain 11 are respectively located between the two left guide limit rings 17 and the two right guide limit rings 18, and no sliding friction is generated between the scraper chain and the guide limit ring.

[0019] The two left guide limit rings 17 and the two right guide limit rings 18 play the role of guiding the scraper chain, ensuring that the scraper chain smoothly enters the chain running track 8.

[0020] The above two embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model belong to the protection scope of the technical solution of the utility model.

Claims

1. The wheel type chain support device of the scraper conveyor is characterized by: It includes a left bearing seat, a right bearing seat, a rotating shaft, a left supporting wheel and a right supporting wheel. The rotating shaft is parallel to and adjacent to the axle of the head wheel of the scraper conveyor, and the axle is located between the chain running track and the head wheel of the scraper conveyor. The left bearing seat is fixedly arranged on the left outer wall of the casing of the scraper conveyor, and the right bearing seat is fixedly arranged on the right outer wall of the casing of the scraper conveyor. The left end of the rotating shaft passes through the left side wall of the casing and is rotatably connected in the left bearing seat through the left bearing, and the right end of the rotating shaft passes through the right side wall of the casing and is rotatably connected in the left bearing seat through the right bearing. The left supporting wheel and the right supporting wheel are both fixedly installed on the rotating shaft, and the left supporting wheel and the right supporting wheel correspond to the left scraper chain and the right scraper chain of the scraper conveyor respectively. The outer cylindrical top of the right supporting wheel of the left supporting wheel is lower than the top surface of the chain running track, the top of the left supporting wheel is rollingly connected to the bottom surface of the upper half of the left scraper chain, and the top of the right supporting wheel is rollingly connected to the bottom surface of the upper half of the right scraper chain.

2. The wheel type chain support device for scraper conveyor according to claim 1, characterized in that: The rotating shaft is composed of a left section, a middle section and a right section in sequence along the length direction. The diameter of the left section is smaller than that of the middle section, and the diameter of the left section is equal to that of the right section. The left supporting wheel is coaxially installed on the left section of the rotating shaft, and the right supporting wheel is coaxially installed on the right section of the rotating shaft. The inner circle of the left supporting wheel and the outer circle of the left section of the rotating shaft, as well as the inner circle of the right supporting wheel and the outer circle of the right section of the rotating shaft are all connected through flat key transmission. The left section of the rotating shaft is threadedly connected with a left nut, the left nut is crimped to the left end face of the left supporting wheel, and the right end face of the left supporting wheel is crimped to the left end annular surface of the middle section of the rotating shaft. The right section of the rotating shaft is threadedly connected with a right nut, the right nut is crimped to the right end face of the right supporting wheel, and the left end face of the right supporting wheel is crimped to the right end annular surface of the middle section of the rotating shaft.

3. The wheel type chain support device for a scraper conveyor according to claim 1 or 2, characterized in that: The outer circle of the left supporting wheel is provided with two left guide limit rings, and the lower part of the left scraper chain runs between the two left guide limit rings. The outer circle of the right supporting wheel is provided with two right guide limit rings, and the lower part of the right scraper chain runs between the two right guide limit rings.

Images