Pipe chain conveyor anti-drop device

Abstract

The utility model discloses a kind of pipe chain conveyer anti-drop chain devices, it is related to conveying equipment technical field, including tensioning box and the driven sprocket rotationally connected in tensioning box, driven sprocket is drivenly connected with chain, the chain inlet of tensioning box is communicated with adjusting box, adjusting sprocket is provided in the adjusting box, the rotating direction of adjusting sprocket is opposite with the rotating direction of driven sprocket, adjusting sprocket can be butted with chain;Adjusting device is provided on the rotating shaft of adjusting sprocket, and the adjusting device is used for adjusting the distance between rotating shaft axis and driven sprocket axis.This structure solves the chain drop problem of existing pipe chain conveyer through adjusting device.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, specifically to an anti-chain-dropping device for a tubular chain conveyor. Background Technology

[0002] A tubular chain conveyor is a continuous conveying device for transporting bulk materials such as powders, small granules, and small lumps. It can transport materials horizontally, inclined, and vertically in combination. It typically consists of a power box that provides power, a tension box that adjusts the chain tension, a chain with scrapers, and a conveying pipe. After prolonged use, the wear between the chains will gradually increase. At the same time, due to uneven material distribution or impact forces during the conveying process, the chain between the power box outlet and the tension box inlet may become loose or even fall off.

[0003] To address the problem of chain slack or chain drop, a device for preventing chain drop in a tubular chain conveyor is provided, as disclosed in patent CN209922194U. This device uses a guide rail inside a tension box to limit the scraper and prevent the chain from falling off. However, this structure can only prevent chain drop caused by slight chain slack. Once the chain becomes too slack, the structure will fail.

[0004] Therefore, there is an urgent need to design a chain-prevention device for tubular chain conveyors to solve the problems existing in the current technology. Summary of the Invention

[0005] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and propose a chain-prevention device for a tubular chain conveyor.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a chain anti-drop device for a tubular chain conveyor, comprising a tension box and a driven sprocket rotatably connected in the tension box, a chain being drivenly connected to the driven sprocket, an adjusting box being connected to the chain inlet end of the tension box, an adjusting sprocket being provided in the adjusting box, the adjusting sprocket rotating in the opposite direction to the driven sprocket, and the adjusting sprocket being able to abut against the chain; an adjusting device is provided on the rotating shaft of the adjusting sprocket, the adjusting device being used to adjust the distance between the axis of the rotating shaft and the axis of the driven sprocket.

[0007] Preferably, the adjustment device includes a horizontal adjustment frame and a vertical adjustment frame. The two sides of the vertical adjustment frame are respectively vertically fixed to the inner sides of the two sides of the horizontal adjustment frame. Protrusions are provided on the outer sides of the two sides of the horizontal adjustment frame. Slide grooves are provided on the two inner walls of the adjustment box that are in the same direction as the chain travel direction. Both protrusions can move in the corresponding slide grooves. Slot holes are provided on the two sides of the vertical adjustment frame. The rotating shaft can drive the adjustment sprocket to move in the two slot holes.

[0008] Preferably, the vertical adjustment frame is provided with a U-shaped adjustment frame, and each of the two side frames of the U-shaped adjustment frame is provided with a first bearing. The adjustment sprocket is located between the two side frames, and the rotating shaft is fixed on the inner wall of the inner ring of the two first bearings respectively. The top frame of the U-shaped adjustment frame is provided with a second bearing, and a first threaded rod is fixed on the inner wall of the inner ring of the second bearing. The top of the vertical adjustment frame is provided with a through first threaded seat, and the first threaded rod is threadedly connected to the first threaded seat. When the first threaded rod rotates, the rotating shaft drives the adjustment sprocket to move within the two strip holes.

[0009] Preferably, the transverse adjustment frame is provided with a third bearing on the connecting plate between the two sides, and a second threaded rod is fixed on the inner wall of the inner ring of the third bearing; a second threaded seat is provided on the side wall of the adjustment box, and the second threaded rod is threadedly connected to the second threaded seat. When the second threaded rod rotates, the transverse adjustment frame drives the adjustment sprocket to move along the slide groove.

[0010] Preferably, the adjusting sprocket is provided with a plurality of chain teeth in a circumferential manner, and the tail end of each of the plurality of chain teeth is provided with a first protrusion. A second protrusion is provided on both sides of each of the first protrusions. The first protrusion and the two second protrusions on each of the chain teeth form a limiting structure, and the limiting structure abuts against the chain.

[0011] Preferably, the height of any one of the first protrusions is less than the height of the corresponding two second protrusions.

[0012] Preferably, the top of the regulating box is provided with a clearance hole, and the first threaded rod passes through the clearance hole and extends to the outside of the regulating box.

[0013] Preferably, a turntable I is provided at the top end of the first threaded rod, and the turntable I is located outside the adjustment box.

[0014] Preferably, a turntable II is provided on the second threaded rod, and the turntable II is located on the outside of the adjusting box.

[0015] Preferably, an observation window is provided on the side wall of the adjustment box, which is used to display the positional relationship between the adjustment sprocket and the chain.

[0016] The beneficial effects achieved by this utility model due to the adoption of the above technical solution are as follows: First, by setting the adjusting sprocket to rotate in the opposite direction to the driven sprocket and making the adjusting sprocket abut against the chain, the chain can be effectively tightened and prevented from falling off when it becomes slack by adjusting the rotation and position of the adjusting sprocket. Second, the cooperation of the horizontal and vertical adjusting frames enables the adjusting sprocket to move flexibly in both horizontal and vertical directions, ensuring that the chain always maintains appropriate tension. In addition, the special design of the chain teeth on the adjusting sprocket, through the limiting structure formed by the first and second protrusions, further enhances the biting force and stability between the chain and the adjusting sprocket, effectively preventing the chain from jumping or falling off during the conveying process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an anti-chain-drop device for a tubular chain conveyor according to the present invention; Figure 2 This is a structural schematic diagram of the front view of the adjusting device of the anti-chain-dropping device for a tubular chain conveyor according to the present invention; Figure 3 This is a schematic diagram of the right side view of the adjusting device of the anti-chain-dropping device for a tubular chain conveyor according to the present invention; Figure 4 This is a schematic diagram of the chain teeth of an anti-chain-drop device for a tubular chain conveyor according to the present invention. Figure 5 This is a schematic diagram of the observation window of the chain teeth in the anti-chain-dropping device for a tubular chain conveyor according to the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 1. Tensioner box; 11. Driven sprocket; 12. Chain; 2. Adjustment box; 21. Adjustment sprocket; 22. Shaft; 23. Slide groove; 24. Second threaded seat; 25. Chain tooth; 251. First protrusion; 252. Second protrusion; 26. Alternating hole; 27. Observation window; 3. Adjustment device; 31. Horizontal adjustment frame; 311. Protrusion; 312. Third bearing; 313. Second threaded rod; 32. Vertical adjustment frame; 321. Strip hole; 322. First threaded seat; 33. U-shaped adjustment frame; 331. Side frame; 332. First bearing; 333. Top frame; 334. Second bearing; 335. First threaded rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The core of this utility model is to provide a chain-prevention device for tubular chain conveyors to solve the problems existing in the prior art.

[0021] The present invention will be described in detail with the following embodiments: Example

[0022] refer to Figure 1-5 A chain anti-drop device for a tubular chain conveyor, such as Figure 1 As shown, it includes a tension box 1 and a driven sprocket 11 rotatably connected within the tension box 1. A chain 12 is driven onto the driven sprocket 11. The chain inlet end of the tension box 1 is connected to an adjusting box 2. An adjusting sprocket 21 is disposed within the adjusting box 2. The rotation direction of the adjusting sprocket 21 is opposite to the rotation direction of the driven sprocket 11. Figure 1 As shown, the driven sprocket 11 rotates counterclockwise, and the adjusting sprocket 21 rotates clockwise. The adjusting sprocket 21 can abut against the chain 12. An adjusting device 3 is provided on the rotating shaft 22 of the adjusting sprocket 21. The adjusting device 3 is used to adjust the distance between the axis of the rotating shaft 22 and the axis of the driven sprocket 11.

[0023] In actual use, the power box is installed at one end of the tubular chain conveyor's discharge port, and the tension box 1 is installed at the other end of the tubular chain conveyor's discharge port. The power box drives the chain 12 to rotate inside the pipe. The material, driven by the scraper on the chain 12, enters through the feed inlet and exits through the discharge outlet. Figure 1 As shown, the lower part of the chain 12 moves to the right under the drive of the power box and is in a tensioned state, while the upper part of the chain 12 moves to the left under the action of the driven sprocket 11 and is in a slack state. At this time, the chain is prone to falling off. An adjustment box 2 is set up, and the distance between the axis of the adjustment shaft 22 and the axis of the driven sprocket 11 is adjusted by the adjustment device 3, thereby adjusting the tension of the upper part of the chain 12 to prevent the chain from slipping off.

[0024] Specifically, such as Figure 1-3As shown, the adjustment device 3 includes a horizontal adjustment frame 31 and a vertical adjustment frame 32. The two sides of the vertical adjustment frame 32 are respectively vertically fixed to the inner sides of the two sides of the horizontal adjustment frame 31. The two outer sides of the horizontal adjustment frame 31 are provided with protrusions 311. The two inner walls of the adjustment box 2, which are in the same direction of travel as the chain 12, are provided with sliding grooves 23. The two protrusions 311 can move in the corresponding sliding grooves 23. The two sides of the vertical adjustment frame 32 are provided with strip holes 321. The rotating shaft 22 can drive the adjustment sprocket 21 to move in the two strip holes 321.

[0025] The horizontal adjustment frame 31 and the vertical adjustment frame 32 are an integral structure. The vertical adjustment frame 32 adjusts the distance between the adjusting sprocket 21 and the chain 12, and adjusts the pressing force of the adjusting sprocket 21 on the chain 12. When the chain 12 is in the normal state, the adjusting sprocket 21 does not need to contact the chain 12, and the chain 12 can be kept running normally by relying only on the driven sprocket 11. Alternatively, the adjusting sprocket 21 can contact the chain 12, and the movement of the chain 12 can drive the adjusting sprocket 21 to rotate. At this time, the adjusting sprocket 21 does not apply any additional horizontal or vertical force to the chain 12. When the chain 12 is in a slack state, the adjusting sprocket 21 moves downward and applies an additional downward force to the chain 12, thus tightening the chain 12.

[0026] like Figure 3 As shown, a U-shaped adjustment frame 33 is provided inside the vertical adjustment frame 32. A first bearing 332 is provided on each of the two side frames 331 of the U-shaped adjustment frame 33. The adjustment sprocket 21 is located between the two side frames 331. The rotating shaft 22 is fixed on the inner wall of the inner ring of the two first bearings 332 respectively. A second bearing 334 is provided on the top frame 333 of the U-shaped adjustment frame 33. A first threaded rod 335 is fixed on the inner wall of the inner ring of the second bearing 334. A through first threaded seat 322 is provided at the top of the vertical adjustment frame 32. The first threaded rod 335 is threadedly connected to the first threaded seat 322. When the first threaded rod 335 rotates, the rotating shaft 22 drives the adjustment sprocket 21 to move within the two strip holes 321.

[0027] In the above structure, the rotating shaft 22 passes through the shaft hole of the adjusting sprocket 21 and is fixed to the adjusting sprocket 21 to achieve coaxial rotation. The two first bearings 332 ensure that the rotating shaft 22 can rotate normally. The cooperation of the first threaded rod 335 and the first threaded seat 322 ensures that the rotating shaft 22 can move up and down under the limit of the two strip holes 321, thereby realizing the function of adjusting the position of the adjusting sprocket 21 and the chain 12.

[0028] In use, if the chain 12 is slack, pressure can be applied to the chain 12 by rotating the first threaded rod 335 to move the adjusting sprocket 21 downward, thereby tightening the chain 12.

[0029] like Figure 2 , 3 As shown, a third bearing 312 is provided on the connecting plate between the two sides of the transverse adjustment frame 31, and a second threaded rod 313 is fixed on the inner wall of the inner ring of the third bearing 312; a second threaded seat 24 is provided on the side wall of the adjustment box 2, and the second threaded rod 313 is threadedly connected to the second threaded seat 24. When the second threaded rod 313 rotates, the transverse adjustment frame 31 drives the adjustment sprocket 21 to move along the slide groove 23.

[0030] In the above structure, the cooperation between the second threaded rod 313 and the second threaded seat 24 ensures the lateral movement of the rotating shaft 22, and the setting of the two protrusions 311 and the corresponding slide grooves 23 ensures the stability of the lateral movement.

[0031] In use, if the chain 12 is still in a slack state after the adjusting sprocket 21 is moved downward, continuing to move the adjusting sprocket 21 downward will cause the chain 12 to jam with the conveying pipe. At this time, rotate the second threaded rod 313 to move the adjusting sprocket 21 to the left, so that the chain 12 is tightened, and simultaneously adjust the tensioning mechanism in the tensioning box 1 so that the chain 12 is at a suitable tension.

[0032] In the above structure, the first bearing 332 is a roller type one-way bearing, which ensures that when the adjusting sprocket 21 is moved to the left, the adjusting sprocket 21 will not rotate counterclockwise. The second bearing 334 and the third bearing 312 are both ball bearings.

[0033] It should be noted that all of the above adjustments were performed by shutting down the machine to avoid any safety accidents.

[0034] like Figure 4 As shown, the adjusting sprocket 21 is provided with a plurality of chain teeth 25 in a circumferential manner. The tail end of each of the plurality of chain teeth 25 is provided with a first protrusion 251. A second protrusion 252 is provided on both sides of each of the first protrusions 251. The first protrusion 251 and the two second protrusions 252 on each of the chain teeth 25 form a limiting structure, and the limiting structure abuts against the chain 12.

[0035] Specifically, the height of any first protrusion 251 is less than the height of the corresponding two second protrusions 252. This arrangement causes the tail end of the chain tooth 25 to form a fork-shaped structure, which can effectively exert downward and leftward forces on the chain, thereby improving the adjustment effect of the adjusting sprocket 21.

[0036] like Figure 1 As shown, the top of the regulating box 2 is provided with a clearance hole 26. The first threaded rod 335 passes through the clearance hole 26 and extends to the outside of the regulating box 2 to avoid the first threaded rod 335 from colliding with the regulating box 2.

[0037] To facilitate operation of the first threaded rod 335 and the second threaded rod 313, such as Figure 1 As shown, a turntable I is provided at the top of the first threaded rod 335, and the turntable I is located outside the adjustment box 2; a turntable II is provided on the second threaded rod 313, and the turntable II is located outside the adjustment box 2.

[0038] For ease of adjustment, such as Figure 5 As shown, an observation window 27 is provided on the side wall of the adjustment box 2. The tension of the chain 12 can be observed through the observation window 27 so as to adjust the positional relationship between the adjusting sprocket 21 and the chain 12.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A chain-prevention device for a tubular chain conveyor, comprising a tension box (1) and a driven sprocket (11) rotatably connected within the tension box (1), wherein a chain (12) is drivenly connected to the driven sprocket (11), characterized in that, The tension box (1) is connected to an adjustment box (2) at the chain inlet end. An adjustment sprocket (21) is provided in the adjustment box (2). The rotation direction of the adjustment sprocket (21) is opposite to that of the driven sprocket (11). The adjustment sprocket (21) can abut against the chain (12). An adjustment device (3) is provided on the shaft (22) of the adjustment sprocket (21). The adjustment device (3) is used to adjust the distance between the axis of the shaft (22) and the axis of the driven sprocket (11).

2. The anti-chain-drop device for a tubular chain conveyor according to claim 1, characterized in that, The adjustment device (3) includes a horizontal adjustment frame (31) and a vertical adjustment frame (32). The two sides of the vertical adjustment frame (32) are respectively vertically fixed to the inner sides of the two sides of the horizontal adjustment frame (31). The two sides of the horizontal adjustment frame (31) are provided with protrusions (311). The two inner walls of the adjustment box (2) are in the same direction as the chain (12) and are provided with sliding grooves (23). The two protrusions (311) can move in the corresponding sliding grooves (23). The two sides of the vertical adjustment frame (32) are provided with strip holes (321). The rotating shaft (22) can drive the adjustment sprocket (21) to move in the two strip holes (321).

3. The anti-chain-drop device for a tubular chain conveyor according to claim 2, characterized in that, The vertical adjustment frame (32) is provided with a U-shaped adjustment frame (33). The two side frames (331) of the U-shaped adjustment frame (33) are each provided with a first bearing (332). The adjustment sprocket (21) is located between the two side frames (331). The rotating shaft (22) is fixed on the inner wall of the inner ring of the two first bearings (332). The top frame (333) of the U-shaped adjustment frame (33) is provided with a second bearing (334). The inner wall of the inner ring of the second bearing (334) is fixed with a first threaded rod (335). The top of the vertical adjustment frame (32) is provided with a through first threaded seat (322). The first threaded rod (335) is threaded into the first threaded seat (322). When the first threaded rod (335) rotates, the rotating shaft (22) drives the adjustment sprocket (21) to move in the two strip holes (321).

4. The anti-chain-drop device for a tubular chain conveyor according to claim 2, characterized in that, The transverse adjustment frame (31) is provided with a third bearing (312) on the connecting plate between the two sides. A second threaded rod (313) is fixed on the inner wall of the inner ring of the third bearing (312). A second threaded seat (24) is provided on the side wall of the adjustment box (2). The second threaded rod (313) is threadedly connected to the second threaded seat (24). When the second threaded rod (313) rotates, the transverse adjustment frame (31) drives the adjustment sprocket (21) to move along the slide groove (23).

5. The anti-chain-drop device for a tubular chain conveyor according to any one of claims 1-4, characterized in that, The adjusting sprocket (21) is provided with a plurality of chain teeth (25) arranged in a ring. Each of the chain teeth (25) has a first protrusion (251) at its tail end. Each of the first protrusions (251) has a second protrusion (252) on both sides. The first protrusion (251) and the two second protrusions (252) on each of the chain teeth (25) form a limiting structure. The limiting structure abuts against the chain (12).

6. The anti-chain-drop device for a tubular chain conveyor according to claim 5, characterized in that, The height of any of the first protrusions (251) is less than the height of the corresponding two second protrusions (252).

7. The anti-chain-drop device for a tubular chain conveyor according to claim 3, characterized in that, The top of the regulating box (2) is provided with a clearance hole (26), and the first threaded rod (335) passes through the clearance hole (26) and extends to the outside of the regulating box (2).

8. The anti-chain-drop device for a tubular chain conveyor according to claim 7, characterized in that, The top end of the first threaded rod (335) is provided with a turntable I, which is located on the outside of the adjustment box (2).

9. The anti-chain-drop device for a tubular chain conveyor according to claim 4, characterized in that, The second threaded rod (313) is provided with a turntable II, which is located on the outside of the regulating box (2).

10. The anti-chain-drop device for a tubular chain conveyor according to claim 2, characterized in that, An observation window (27) is provided on the side wall of the adjustment box (2), which is used to display the positional relationship between the adjustment sprocket (21) and the chain (12).

Images