Conveyor chain tensioning mechanism

Abstract

The utility model discloses a conveyor chain tensioning mechanism, which particularly relates to the technical field of conveyors, and comprises a shell, a driving wheel and a driven wheel are rotatably connected in the shell, the driven wheel is arranged on one side of the driving wheel, the outer sides of the driving wheel and the driven wheel are respectively meshed with a chain, and two adjusting components and a guide mechanism are arranged in the shell. The guide mechanism is installed on one side of the adjusting assembly. The adjusting assembly comprises a threaded rod which is rotationally connected with the interior of the shell, a rotating disc is fixedly connected to the bottom end of the threaded rod, and a fixing rod is rotationally connected to the top end of the threaded rod and fixedly connected with the interior of the shell. By arranging the adjusting assembly and the guide mechanism, the chain can be well meshed with the driving wheel and the driven wheel, transmission efficiency reduction caused by looseness of the chain is reduced, meanwhile, transverse or longitudinal displacement of the chain in the transmission process can be reduced, a moving guide function is provided for the chain, and the service life of the chain is prolonged. And the chain keeps a relatively stable path in the transmission process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conveyer, more specifically, the utility model relates to a conveyer chain tensioning mechanism. BACKGROUND

[0002] Conveyers can be divided into the following types according to their operation modes: integrated loading and replenishing conveyers, belt conveyers, screw conveyers, bucket elevators, drum conveyers, plate chain conveyers, mesh belt conveyers and chain conveyers. The chain of a chain conveyer will become loose due to fatigue during long-term use, and thus the tension of the chain needs to be adjusted after a period of use.

[0003] The chain will become loose after a period of use, and problems such as disengagement of the chain from the sprocket, loss of function, transmission jamming, instability or vibration, and large movement error during forward and reverse rotation will occur. The existing chain device does not have a tensioning function, and it is troublesome to eliminate chain looseness.

[0004] According to the search, the Chinese patent with the publication number CN212739494U discloses a chain device with a tensioning mechanism. Two screws are synchronously rotated. Since the screws are threadedly connected with the driven shaft, the driven shaft will move axially along the screw. Since one end of the screw abuts against a stopper, the stopper is fixed on the rack, and thus the screw is fixed relative to the rack, and the driving shaft is also fixed relative to the rack. Therefore, by rotating the screw in the correct direction, the driven shaft will move away from the driving shaft, and the tensioning of the chain is achieved.

[0005] When the driven shaft moves away from the driving shaft during actual use of the chain device with the tensioning mechanism, the tension of the chain will increase, which will cause the chain to be subjected to excessive tensile stress during transmission, and thus the chain will be broken, causing a safety hazard. UTILITY MODEL CONTENTS

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a conveyer chain tensioning mechanism to solve the problems raised in the above background.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A conveyer chain tensioning mechanism, comprising an outer shell, a driving wheel and a driven wheel are rotatably connected inside the outer shell, the driven wheel is installed on one side of the driving wheel, the driving wheel and the driven wheel are both meshed with a chain outside, two adjusting assemblies and a guide mechanism are installed inside the outer shell, and the guide mechanism is installed on one side of the adjusting assembly.

[0009] The adjusting assembly comprises a threaded rod, the threaded rod is rotationally connected with the inside of the shell, the bottom end of the threaded rod is fixedly connected with a rotating disc, the top end of the threaded rod is rotationally connected with a fixed rod, the fixed rod is fixedly connected with the inside of the shell, the outside of the threaded rod is threadedly connected with a threaded ring, one side of the threaded ring is fixedly connected with a first sliding ring, the inside of the first sliding ring is slidingly connected with a guide column, the top end of the guide column is fixedly connected with the fixed rod, the bottom end of the guide column is fixedly connected with the inside of the shell, the other side of the threaded ring is fixedly connected with a moving block, the inside of the moving block is provided with a sliding groove, the inside of the sliding groove is slidingly connected with a sliding rod, one side of the sliding rod is fixedly connected with a fixed plate, the side surface of the moving block is matched with the side surface of the fixed plate, the top end of the fixed plate is fixedly connected with a supporting rod, the inside of the supporting rod is rotationally connected with a supporting shaft, the inside of the supporting shaft is fixedly connected with the inside of the shell, and the inside of the supporting rod is rotationally connected with an auxiliary gear.

[0010] By adopting the above technical scheme, the chain is closely attached to the driving wheel and the driven wheel, so that the power transmission efficiency is improved.

[0011] Further to the above technical scheme, the guide mechanism comprises two guide rods, the inside of the guide rods is slidingly connected with a second sliding rod, the second sliding rods are fixedly connected with a supporting frame between the two, the supporting frame is rotationally connected with a rotating wheel on one side, and the supporting frame is fixedly connected with two telescopic springs on the other side.

[0012] By adopting the above technical scheme, the chain is closely attached to the driving wheel and the driven wheel, so that the power transmission efficiency is improved.

[0013] The technical effects and advantages of the utility model are as follows:

[0014] 1. By setting adjusting assembly, compared with prior art, through the auxiliary gear moves obliquely and can push chain and driving wheel and driven wheel attach, can make chain and driving wheel and driven wheel between good meshing, reduce because chain slack causes transmission efficiency to drop, and can reduce the tensile stress of chain in the transmission process, reduce the risk of chain fracture;

[0015] 2. By setting guide mechanism, compared with prior art, utilize two rotating wheels and hold in the chain both sides, and can rotate the transmission of auxiliary chain, can reduce the horizontal or vertical displacement of chain in the transmission process, provide the guide effect of moving for chain, make chain keep relatively stable path in the transmission process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model.

[0017] Figure 2 The shell cross-sectional view structure schematic view of the utility model.

[0018] Figure 3 The support rod structure schematic view of the utility model.

[0019] Figure 4 The moving block structure schematic view of the utility model.

[0020] Figure 5 The Figure 1 The A part enlarged view structure schematic view of the utility model.

[0021] Figure 6 The Figure 2 The B part enlarged view structure schematic view of the utility model.

[0022] The figure mark is: 1, shell;2, driving wheel;3, driven wheel;4, chain;5, threaded rod;6, rotary table;7, fixed rod;8, threaded ring;9, first sliding ring;10, guide column;11, moving block;12, sliding slot;13, sliding rod;14, fixed plate;15, support rod;16, support shaft;17, auxiliary gear;18, guide rod;19, second sliding rod;20, support frame;21, rotary wheel;22, telescopic spring. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] The utility model discloses a kind of conveyor chain tensioning mechanisms as shown in Figures 1-6 Including shell 1, driving wheel 2 and driven wheel 3 are rotatably connected in shell 1 inside, driven wheel 3 is installed in driving wheel 2 one side, driving wheel 2 and the outside of driven wheel 3 are all engaged with chain 4, two adjusting assemblies and guiding mechanism are installed in shell 1 inside, guiding mechanism is installed in adjusting assembly side;

[0025] The adjusting assembly comprises a threaded rod 5, the threaded rod 5 is rotationally connected in the inside of the shell 1, the threaded rod 5 is fixedly connected with a rotating disc 6 at the bottom end, the threaded rod 5 is rotationally connected with a fixed rod 7 at the top end, the fixed rod 7 is fixedly connected in the inside of the shell 1, the threaded rod 5 is threadedly connected with a threaded ring 8 outside, the threaded ring 8 is fixedly connected with a first sliding ring 9 on one side, the first sliding ring 9 is slidingly connected with a guide column 10 in the inside, the guide column 10 is fixedly connected with the fixed rod 7 at the top end, the guide column 10 is fixedly connected with the inside of the shell 1 at the bottom end, the threaded ring 8 is fixedly connected with a moving block 11 on the other side, the moving block 11 is provided with a sliding slot 12 in the inside, the sliding slot 12 is slidingly connected with a sliding rod 13 in the inside, the sliding rod 13 is fixedly connected with a fixed plate 14 on one side, the moving block 11 is matched with the fixed plate 14 on one side, the fixed plate 14 is fixedly connected with a supporting rod 15 at the top end, the supporting rod 15 is rotationally connected with a supporting shaft 16 in the inside, the supporting shaft 16 is fixedly connected with the inside of the shell 1, the supporting rod 15 is rotationally connected with an auxiliary gear 17 in the inside, the threaded rod 5 can drive the moving block 11 to move upwards through the thread, the moving block 11 is matched with the fixed plate 14 on one side, and the sliding rod 13 is slidingly connected with the sliding slot 12 in the inside, so that the moving block 11 can push the supporting rod 15 to tilt upwards when moving upwards, so that the supporting rod 15 drives the auxiliary gear 17 to abut against the chain 4, so that the chain 4 can be attached to the driving wheel 2 and the driven wheel 3, the transmission efficiency caused by the slack chain 4 is reduced, and the tensile stress of the chain in the transmission process is reduced, and the risk of chain fracture is reduced.

[0026] Referring to Figure 6 As shown in the figure, the guide mechanism comprises two guide rods 18, the guide rods 18 are slidingly connected with second sliding rods 19 in the inside, the two second sliding rods 19 are fixedly connected with a supporting frame 20, the supporting frame 20 is rotationally connected with rotating wheels 21 on one side, the supporting frame 20 is fixedly connected with two extension springs 22 on the other side, one end of the extension spring 22 is fixedly connected with the inside of the shell 1, the two rotating wheels 21 are used for clamping and limiting on both sides of the chain 4, so that the transverse deviation of the chain 4 can be limited to a certain extent, and the chain 4 can keep a relatively stable path during transmission.

[0027] The utility model discloses a kind of conveyor chain tensioning mechanisms, specific structure is as shown in the description Figures 1-6As shown, in the technical scheme, when the chain needs to rotate, the driving wheel 2 drives the driven wheel 3 through the chain 4 to rotate, the chain 4 forms a closed loop between the driving wheel 2 and the driven wheel 3, the continuous transmission of power is ensured, the two rotating wheels 21 are arranged on both sides of the chain 4, the chain 4 can be pressed against the rotating wheels 21, the multiple extension springs 22 can push the rotating wheels 21 to clamp and limit the chain 4, the second sliding rod 19 and the guide rod 18 are slidably connected, the guide rod 18 can guide the movement of the supporting frame 20, the deviation of the chain 4 is reduced, when the tension of the chain 4 needs to be adjusted, the rotating disc 6 drives the threaded rod 5 to rotate, the threaded rod 5 drives the threaded ring 8 to move upwards through the screw thread, the first sliding ring 9 is slidably connected with the guide column 10, the guide column 10 can guide the movement of the threaded ring 8, the threaded ring 8 drives the moving block 11 to move, the moving block 11 is slidably connected with the sliding slot 12, when the moving block 11 moves upwards, the supporting rod 15 can be tilted to one side, the supporting shaft 16 is used as a fulcrum, one end of the supporting rod 15 drives the auxiliary gear 17 to move, the auxiliary gear 17 can abut against the chain 4 upwards, the contact area of the chain 4 with the driving wheel 2 and the driven wheel 3 is increased, and the tension of the chain 4 can be adjusted.

[0028] In the drawings of the utility model, only the structures related to the embodiments of the utility model are involved, other structures can be referred to the general design, and the same embodiments and different embodiments of the utility model can be combined with each other under the condition of no conflict.

[0029] The contents not described in detail in the specification all belong to the prior art known by those skilled in the art, and the model parameters of various electric appliances are not limited, and conventional equipment can be used, the electric appliance control elements not mentioned in the technical scheme belong to the prior art, and therefore are not shown in the drawings, and will not be described herein.

[0030] Finally, the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A conveyor chain tensioning mechanism comprising a housing (1), characterised in that: The shell (1) is rotatably connected with a driving wheel (2) and a driven wheel (3), the driven wheel (3) is installed on one side of the driving wheel (2), the driving wheel (2) and the driven wheel (3) are engaged with a chain (4) on the outside, two adjusting assemblies and a guide mechanism are installed in the shell (1), and the guide mechanism is installed on one side of the adjusting assembly. The adjusting assembly comprises a threaded rod (5), the threaded rod (5) is rotatably connected with the shell (1), the threaded rod (5) is fixedly connected with a rotating disc (6) at the bottom end, the threaded rod (5) is rotatably connected with a fixed rod (7) at the top end, the fixed rod (7) is fixedly connected with the shell (1), and the threaded rod (5) is threadedly connected with a threaded ring (8) on the outside.

2. The conveyor chain tensioning mechanism of claim 1, wherein: A first sliding ring (9) is fixedly connected on one side of the threaded ring (8), a guide column (10) is slidably connected in the first sliding ring (9), the guide column (10) is fixedly connected with the fixed rod (7) at the top end, and the guide column (10) is fixedly connected with the shell (1) at the bottom end.

3. The conveyor chain tensioning mechanism of claim 1, wherein: A moving block (11) is fixedly connected on the other side of the threaded ring (8), a sliding groove (12) is formed in the inner side of the moving block (11), and a sliding rod (13) is slidably connected in the sliding groove (12).

4. The conveyor chain tensioning mechanism of claim 3, wherein: A fixed plate (14) is fixedly connected on one side of the sliding rod (13), the side surface of the moving block (11) is matched with the side surface of the fixed plate (14), and the fixed plate (14) is fixedly connected with a supporting rod (15) at the top end.

5. The conveyor chain tensioning mechanism of claim 4, wherein: A supporting shaft (16) is rotatably connected in the supporting rod (15), the supporting shaft (16) is fixedly connected with the shell (1), and an auxiliary gear (17) is rotatably connected in the supporting rod (15).

6. The conveyor chain tensioning mechanism of claim 1, wherein: The guide mechanism comprises two guide rods (18), a second sliding rod (19) is slidably connected in the inner side of the guide rod (18), and a supporting frame (20) is fixedly connected between the two second sliding rods (19).

7. The conveyor chain tensioning mechanism of claim 6, wherein: A rotating wheel (21) is rotatably connected on one side of the supporting frame (20), two telescopic springs (22) are fixedly connected on the other side of the supporting frame (20), and one end of the telescopic spring (22) is fixedly connected with the shell (1).

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