Tensioning device for roller chain of bridge type blending reclaimer

Abstract

The utility model relates to the technical field of conveying chain tensioning devices, in particular to a tensioning device for a roller chain of a bridge type blending reclaimer, which comprises a driving chain wheel, a first redirection chain wheel, a second redirection chain wheel and a roller chain wound on the outer sides of the driving chain wheel, the first redirection chain wheel and the second redirection chain wheel. The first redirection chain wheel and the second redirection chain wheel are rotationally fixed to a tensioning adjusting mechanism used for adjusting the tightness of the roller chain, and the tensioning adjusting mechanism comprises a swing rod vertically and rotationally connected with the side beam and a telescopic supporting rod. The telescopic supporting rod comprises a first connecting rod vertically and rotatably connected with the side beam, a second connecting rod vertically and rotatably connected with the free end of the swing rod and an adjusting piece. The telescopic supporting rod is extended or shortened by rotating the adjusting piece, the first redirection chain wheel and the second redirection chain wheel are driven to be far away from or close to the driving chain wheel, and the tightness of the roller chain wound outside is adjusted. The device is simple in structure, convenient to adjust and large in adjusting range.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor chain tensioning devices, in particular to a tensioning device for roller chains of bridge-type mixing and reclaiming machines. Background Art

[0002] The bridge type mixing reclaimer is mainly used for mixing yard operations, and can also be used for ordinary yard operations. The materials it transports include limestone, crushed slag, various iron ores, selected ores, etc. This type of equipment can be used in the material yard mixing system to provide raw materials for blast furnaces, powder metallurgy equipment, granulation equipment, copper plants, fertilizer plants, cement plants, coal washing plants, coke plants, thermal power plants, bauxite plants and other types of equipment.

[0003] The existing roller mechanism of the bridge-type mixer reclaimer is driven by a chain transmission method, which transmits torque through a roller chain through a driving sprocket and a tooth block fixed within the circumference of the roller ring. During operation, the chain will be elongated due to long-term use and other reasons. The roller chain will be too loose, which may cause chain jamming, abnormal noise and other phenomena, affecting the normal operation of the machine. The existing tensioning device adjusts the bolt length by adjusting the nut, changes the position of the redirecting sprocket, and then adjusts the tightness of the chain to make it moderate, uniform, and meet standard requirements to ensure the normal operation of the motion transmission. However, the existing tensioning device has disadvantages during operation:

[0004] 1. The space where the adjusting nut is located is small, making it inconvenient to operate.

[0005] 2. The length of the adjusting bolt is limited, resulting in a smaller adjustment range of the tensioning device. Utility Model Content

[0006] In order to solve at least one of the above-mentioned technical problems, the utility model proposes a tensioning device for the roller chain of a bridge-type mixing and reclaiming machine, by vertically rotating a fixed swing rod and a telescopic support rod on the side beam, and rotating an adjusting piece to make the first connecting rod and the second connecting rod move away from or closer to each other, so that the telescopic support rod is lengthened or shortened, driving the first redirecting sprocket and the second redirecting sprocket to move away from or closer to the driving sprocket, thereby realizing the adjustment of the tightness of the roller chain wound around the outside, thereby solving the problems of inconvenient adjustment and small adjustment range.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A tensioning device for a roller chain of a bridge-type mixing and reclaiming machine, comprising a driving sprocket, a first redirecting sprocket and a second redirecting sprocket symmetrically arranged at the lower part of the driving sprocket, and a roller chain wound around the outside of the driving sprocket, the first redirecting sprocket and the second redirecting sprocket, the first redirecting sprocket and the second redirecting sprocket being rotatably fixed to a tensioning adjustment mechanism for adjusting the tightness of the roller chain, the tensioning adjustment mechanism comprising a swing rod and a telescopic support rod vertically rotatably connected to the side beam, the telescopic support rod comprising a first connecting rod vertically rotatably connected to the side beam, a second connecting rod vertically rotatably connected to the free end of the swing rod, and an adjusting member rotatably sleeved between the free ends of the first connecting rod and the second connecting rod for changing the length of the telescopic support rod to move the first redirecting sprocket and the second redirecting sprocket away from or close to the driving sprocket.

[0009] Preferably, the adjusting member includes a connecting section and a first threaded section and a second threaded section located at both ends of the connecting section, the first threaded section and the second threaded section are provided with internal threads, and the free ends of the first connecting rod and the second connecting rod are provided with external threads matching the internal threads.

[0010] Preferably, the first thread segment and / or the second thread segment are rotatably connected to the connecting segment.

[0011] Preferably, the first thread segment and the second thread segment are fixedly connected to the connecting segment.

[0012] Preferably, the fixed end of the swing rod is vertically rotatably connected to a first support fixed on the side beam.

[0013] Preferably, a second connecting plate is fixed to the free end of the swing rod at a first angle a with the swing rod, a second U-shaped groove is provided at the fixed end of the second connecting rod, and the second connecting plate is fixed in the second U-shaped groove by inserting a pin.

[0014] Preferably, the first angle a is an acute angle.

[0015] Preferably, the free ends of the second connecting plate and the swing rod are provided with shaft holes, and are rotatably fixed to the first redirecting sprocket and the second redirecting sprocket via a rotating shaft.

[0016] Preferably, a first U-shaped groove is provided at the fixed end of the first connecting rod, and the first U-shaped groove is rotatably connected to a first connecting plate fixed to the side beam through a pin.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model vertically rotates the fixed swing rod and the telescopic support rod on the side beam, rotates the adjustment member to make the first connecting rod and the second connecting rod move away from or close to each other, so that the telescopic support rod is extended or shortened, and the first redirecting sprocket and the second redirecting sprocket are driven away from or close to the driving sprocket, so as to adjust the tightness of the roller chain wound on the outside. The device has a simple structure, convenient adjustment and a large adjustment range.

[0019] The utility model provides a first thread segment and a second thread segment which are rotatably connected or fixedly connected at both ends of the connection segment. The first thread segment and the second thread segment can be rotated and adjusted individually or simultaneously to change the length of the telescopic support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the positions of the driving sprocket, the first redirecting sprocket and the second redirecting sprocket in the utility model;

[0021] Figure 2 It is a structural schematic diagram of a tensioning device for a roller chain of a bridge-type mixing and reclaiming machine;

[0022] Figure 3 It is a side view of the telescopic support rod in the utility model;

[0023] Figure 4 It is a top view of the telescopic support rod in the utility model;

[0024] In the figure: 1. driving sprocket; 2. first redirecting sprocket; 3. second redirecting sprocket; 4. roller chain; 5. tensioning adjustment mechanism; 51. swing rod; 52. telescopic support rod; 521. first connecting rod; 5211. first U-shaped groove; 522. second connecting rod; 5221. second U-shaped groove; 523. adjusting member; 5231. connecting section; 5232. first threaded section; 5233. second threaded section; 6. first support; 7. first connecting plate; 8. second connecting plate; 9. rotating shaft; 10. roller; 11. side beam. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention.

[0026] Please refer to Figure 1-4As shown, a tensioning device for a roller chain of a bridge-type mixing and reclaiming machine comprises a driving sprocket 1, a first redirecting sprocket 2 and a second redirecting sprocket 3 symmetrically arranged at the lower part of the driving sprocket 1, and a roller chain 4 wound around the outside of the driving sprocket 1, the first redirecting sprocket 2 and the second redirecting sprocket 3, the first redirecting sprocket 2 and the second redirecting sprocket 3 are rotatably fixed to a tensioning adjustment mechanism 5 for adjusting the tightness of the roller chain 4, the tensioning adjustment mechanism 5 comprises a swing rod 51 vertically rotatably connected to the side beam 11 and a telescopic support rod 52, the telescopic support rod 52 comprises a first connecting rod 521 vertically rotatably connected to the side beam 11, a second connecting rod 522 vertically rotatably connected to the free end of the swing rod 51, and an adjusting member 523 rotatably sleeved between the free end of the first connecting rod 521 and the free end of the second connecting rod 522 for changing the length of the telescopic support rod 52 to make the first redirecting sprocket 2 and the second redirecting sprocket 3 away from or close to the driving sprocket 1.

[0027] In this embodiment, by vertically rotating the fixed swing rod 51 and the telescopic support rod 52 on the side beam 11, the first connecting rod 521 and the second connecting rod 522 are moved away from or closer to each other by rotating the adjusting member 523, so that the telescopic support rod 52 is extended or shortened, and the first redirecting sprocket 2 and the second redirecting sprocket 3 are driven away from or closer to the driving sprocket 1, so as to adjust the tightness of the roller chain 4 wound on the outside. The device has a simple structure, convenient adjustment and a large adjustment range.

[0028] Specifically, the first redirecting sprocket 2 and the second redirecting sprocket 3 are arranged on the upper part of the outer periphery of the roller 10, and the roller chain 4 between the first redirecting sprocket 2 and the second redirecting sprocket 3 is meshed with the tooth blocks on the outer periphery of the roller 10 for transmission, thereby driving the roller 10 to rotate under the action of the driving sprocket 1. It can be understood that when the roller chain 4 becomes loose, the tooth blocks on the outer periphery of the roller 10 are poorly meshed with it, and problems such as chain jamming are likely to occur, affecting the normal rotation of the roller 10. The adjusting member 523 is rotated to move the first connecting rod 521 and the second connecting rod 522 away from each other, pushing the first redirecting sprocket 2 and the second redirecting sprocket 3 away from the driving sprocket 1, thereby tightening the roller chain 4, improving the meshing degree between the roller chain 4 and the tooth blocks on the roller 10, and ensuring the normal rotation of the roller 10.

[0029] In this embodiment, the swing rod 51 , the telescopic support rod 52 and the side beam 11 form a triangular structure, wherein the inclination direction of the telescopic support rod 52 is away from the driving sprocket 1 .

[0030] Please refer to Figure 2 , Figure 3 and Figure 4As shown, the adjusting member 523 includes a connecting section 5231 and a first threaded section 5232 and a second threaded section 5233 located at both ends of the connecting section 5231. The first threaded section 5232 and the second threaded section 5233 are provided with internal threads, and the free ends of the first connecting rod 521 and the second connecting rod 522 are provided with external threads matching the internal threads.

[0031] Specifically, the adjusting member 523 in this embodiment can be an integrated type or a combined type.

[0032] When the adjusting member 523 is a combined type, the first thread segment 5232 and / or the second thread segment 5233 are rotatably connected to the connecting segment 5231. In this way, the first thread segment 5232 and the second thread segment 5233 can be adjusted simultaneously or separately according to the actual adjustment range.

[0033] When the adjusting member 523 is integrated, the first thread segment 5232 and the second thread segment 5233 are fixedly connected to the connecting segment 5231. At this time, the first thread segment 5232 and the second thread segment 5233 rotate relative to the first connecting rod 521 and the second connecting rod 522 at the same time, and cause the first connecting rod 521 and the second connecting rod 522 to move away from or closer to each other, so as to adjust the first redirecting sprocket 2 and the second redirecting sprocket 3 to move away from or closer to the driving sprocket 1.

[0034] Please refer to Figure 2-Figure 4 As shown, the fixed end of the swing rod 51 is vertically rotatably connected to the first support 6 fixed on the side beam 11. The free end of the swing rod 51 is fixed with a second connecting plate 8 at a first angle a with the swing rod 51, and the fixed end of the second connecting rod 522 is provided with a second U-shaped groove 5221, and the second connecting plate 8 is fixed in the second U-shaped groove 5221 by inserting a pin. The fixed end of the first connecting rod 521 is provided with a first U-shaped groove 5211, and the first U-shaped groove 5211 is rotatably connected to the first connecting plate 7 fixed on the side beam 11 by a pin.

[0035] It should be noted that in order to improve the stability and firmness of the tensioning device supporting the first redirecting sprocket 2 and the second redirecting sprocket 3, the free ends of the second connecting plate 8 and the swing rod 51 in this embodiment are provided with shaft holes, and are rotationally fixed to the first redirecting sprocket 2 and the second redirecting sprocket 3 through the rotating shaft 9. In this way, the supporting force direction of the telescopic support rod 52 can pass through the center of the first redirecting sprocket 2 and the second redirecting sprocket 3, that is, directly act on the first redirecting sprocket 2 and the second redirecting sprocket 3, rather than being transmitted through the swing rod 51.

[0036] In this embodiment, the fixed end of the swing rod 51 is located at the lower end of the first connecting rod 521. The first angle a is smaller than the angle between the swing rod 51 and the center line connecting the first redirecting sprocket 2 or the second redirecting sprocket 3 and the driving sprocket 1. In this embodiment, the first angle a between the telescopic support rod 52 and the swing rod 51 is an acute angle.

[0037] The utility model vertically rotates the fixed swing rod 51 and the telescopic support rod 52 on the side beam 11, and rotates the adjusting member 523 to make the first connecting rod 521 and the second connecting rod 522 move away from or close to each other, so that the telescopic support rod 52 is extended or shortened, and the first redirecting sprocket 2 and the second redirecting sprocket 3 move away from or close to the driving sprocket 1, so as to adjust the tightness of the roller chain 4 wound around the outside. The device has a simple structure, convenient adjustment, and a large adjustment range.

[0038] The above is a specific implementation of the embodiment of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the scope of protection of this application.

Claims

1. A tensioning device for a roller chain of a bridge type mixing and reclaiming machine, comprising a driving sprocket (1), a first redirecting sprocket (2) and a second redirecting sprocket (3) symmetrically arranged below the driving sprocket (1), and a roller chain (4) wound around the outside of the driving sprocket (1), the first redirecting sprocket (2) and the second redirecting sprocket (3), characterized in that: The first redirecting sprocket (2) and the second redirecting sprocket (3) are rotatably fixed on a tensioning adjustment mechanism (5) for adjusting the tension of a roller chain (4); the tensioning adjustment mechanism (5) comprises a swinging rod (51) vertically rotatably connected to the side beam (11) and a telescopic support rod (52); the telescopic support rod (52) comprises a first connecting rod (521) vertically rotatably connected to the side beam (11), a second connecting rod (522) vertically rotatably connected to the free end of the swinging rod (51), and an adjusting member (523) rotatably sleeved between the free end of the first connecting rod (521) and the free end of the second connecting rod (522) for changing the length of the telescopic support rod (52) so that the first redirecting sprocket (2) and the second redirecting sprocket (3) are moved away from or close to the driving sprocket (1).

2. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 1 is characterized in that: The adjusting member (523) comprises a connecting section (5231) and a first threaded section (5232) and a second threaded section (5233) located at both ends of the connecting section (5231), wherein the first threaded section (5232) and the second threaded section (5233) are provided with internal threads, and the free ends of the first connecting rod (521) and the second connecting rod (522) are provided with external threads matching the internal threads.

3. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 2 is characterized in that: The first thread segment (5232) and / or the second thread segment (5233) are rotatably connected to the connecting segment (5231).

4. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 2 is characterized in that: The first thread segment (5232) and the second thread segment (5233) are fixedly connected to the connecting segment (5231).

5. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 1, characterized in that: The fixed end of the swing rod (51) is vertically rotatably connected to a first support (6) fixed on the side beam (11).

6. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 1, characterized in that: A second connecting plate (8) is fixed to the free end of the swing rod (51) at a first angle a with the swing rod (51), a second U-shaped groove (5221) is provided at the fixed end of the second connecting rod (522), and the second connecting plate (8) is fixed in the second U-shaped groove (5221) by means of a pin.

7. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 6 is characterized in that: The first angle a is an acute angle.

8. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 7, characterized in that: The free ends of the second connecting plate (8) and the swinging rod (51) are provided with shaft holes, and are rotationally fixed to the first redirecting sprocket (2) and the second redirecting sprocket (3) via a rotating shaft (9).

9. The tensioning device for roller chain of bridge type mixing and reclaiming machine according to claim 1, characterized in that: A first U-shaped groove (5211) is provided at the fixed end of the first connecting rod (521), and the first U-shaped groove (5211) is rotatably connected to a first connecting plate (7) fixed to the side beam (11) via a pin.

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