Tensioning device

Abstract

The utility model discloses a tensioning device, and belongs to the technical field of mechanical equipment. The tensioning device is used for adjusting the tensioning degree of a chain of the conveying equipment and comprises a tensioning wheel, a main shaft and a support, the main shaft is supported on the support, the tensioning wheel is arranged on the main shaft in a sleeving mode, the tensioning wheel is rotationally connected with the main shaft, and the tensioning wheel is used for applying acting force to the chain so as to adjust the tensioning degree of the chain. According to the tensioning device provided by the invention, the tensioning device comprises the tensioning wheel, and the tensioning wheel is used for applying the acting force to the chain, so that the tensioning degree of the chain can be adjusted by adjusting the magnitude of the acting force applied to the chain by the tensioning wheel, and therefore, the chain is tensioned, and normal operation of the chain is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment, and in particular to a tensioning device for adjusting the tension of a chain of a conveying device. Background Art

[0002] Conveying equipment, such as chain conveyors, have the advantages of large conveying capacity, low power consumption, less wear, and reliable operation. They are mainly used for conveying bulk and blocky items in industries such as papermaking, mining, and coal mining. Chain conveyors use a series of chain plates fixed to the traction chain to convey materials in a horizontal or inclined direction. Chain conveyors are composed of a drive device, a traction chain, plates, a hopper, etc. When working, the drive device drives the traction chain to operate, and the traction chain drives the plates meshed with it to make a circular motion, thereby conveying materials.

[0003] The selection of chain conveyor mainly considers the production capacity of the factory and the characteristics of the conveyed materials, determines the conveying capacity of the conveyor, and selects the appropriate chain width and speed. After the chain of the conveying equipment has been used for a period of time, the total length will become longer, and it is easy to jump teeth and the chain will run out of the groove, affecting normal operation. Generally, the chain can be tensioned by using a mobile motor or a driven sprocket. However, for conveying equipment with heavy chains (for example, the weight of each meter of chain is greater than 40kg), due to the heavy chain, the chain cannot be tensioned by conventional means, making it difficult to adjust the chain tension of the conveying equipment. Utility Model Content

[0004] The present application provides a tensioning device, which can solve the technical problem that the chain tension of a conveying device is difficult to adjust.

[0005] In order to solve the above-mentioned technical problems, the tensioning device provided in the present application is used to adjust the tension of the chain of the conveying equipment. The tensioning device includes a tensioning wheel, a main shaft and a bracket. The main shaft is supported on the bracket, and the tensioning wheel is sleeved on the main shaft. The tensioning wheel is rotatably connected to the main shaft. The tensioning wheel is used to apply force to the chain to adjust the tension of the chain.

[0006] The tensioning device provided in the present application includes a tensioning wheel, which is used to apply a force to the chain, so that the tension of the chain can be adjusted by adjusting the magnitude of the force applied by the tensioning wheel on the chain, thereby tensioning the chain to ensure normal operation of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0008] Figure 1 It is a structural schematic diagram of an embodiment of a tensioning device provided by the present application;

[0009] Figure 2 is a schematic diagram of the exploded structure of an embodiment of a tensioning device provided by the present application;

[0010] Figure 3 is a schematic cross-sectional structure diagram of an embodiment of a tensioning device provided by the present application along a viewing angle;

[0011] Figure 4 is a structural schematic diagram of another embodiment of the tensioning device provided by the present application;

[0012] Figure 5 is a schematic diagram of the exploded structure of another embodiment of the tensioning device provided by the present application;

[0013] Figure 6 It is a structural schematic diagram of an embodiment of a height adjustment member provided in the present application. DETAILED DESCRIPTION

[0014] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0015] In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited. The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0016] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0017] The present application provides a tensioning device for adjusting the tension of a chain of a conveying device. Figure 1-Figure 3 , the tensioning device 100 may include a tensioning wheel 10, a main shaft 20 and a bracket 30. The main shaft 20 is supported on the bracket 30, the tensioning wheel 10 is sleeved on the main shaft 20, and the tensioning wheel 10 is rotatably connected to the main shaft 20. The tensioning device 100 can be installed on the mounting plate below the chain, so that the tensioning wheel 10 can abut against the chain, and when the chain moves, the tensioning wheel 10 rotates around the main shaft 20. The number of tensioning devices 100 installed and the installation position in the direction of chain movement can be determined as needed. Specifically, according to the degree of slackness of the chain, one tensioning device 100 can be set under the chain, or multiple tensioning devices 100 can be installed at intervals. The tensioning wheel 10 is used to apply force to the chain to adjust the tension of the chain.

[0018] The tensioning device 100 provided in the present application includes a tensioning wheel 10, which is used to apply a force to the chain, so that the tension of the chain can be adjusted by adjusting the force applied by the tensioning wheel 10 on the chain, thereby tensioning the chain to ensure normal operation of the chain.

[0019] The installation height of the tension wheel 10 can be preset according to the degree of chain slack. If the chain is severely slack and a larger force is required to tighten the chain, the installation height of the tension wheel 10 can be preset to be higher, for example, the design height of the bracket 30 can be increased; conversely, if the chain is slightly slack and a smaller force is required to tighten the chain, the installation height of the tension wheel 10 can be preset to be lower, for example, the design height of the bracket 30 can be lowered.

[0020] See also Figure 4-Figure 5In one embodiment, the tensioning device 100 includes a height adjustment member 40, which is connected to the bracket 30 and is used to adjust the installation height of the tensioning wheel 10. By providing the height adjustment member 40, the installation height of the tensioning wheel 10 can be adjusted as needed, so that it is suitable for chains with different degrees of slack, and the versatility of the tensioning device 100 is enhanced. Specifically, when the chain is severely slack, a larger force needs to be applied to tension it. At this time, the height adjustment member 40 can be adjusted to increase the installation height of the tensioning wheel 10, thereby increasing the force applied by the tensioning wheel 10 on the chain; conversely, when the chain is slightly slack, a smaller force can be applied to tension the chain. At this time, the height adjustment member 40 can be adjusted to reduce the installation height of the tensioning wheel 10, thereby reducing the force applied by the tensioning wheel 10 on the chain.

[0021] The height adjustment member 40 can be arranged in a variety of ways. Figure 6 As shown, the height adjustment member 40 includes a first telescopic rod 41, a second telescopic rod 42 and a fixing member 43. The first telescopic rod 41 is slidably connected with the second telescopic rod 42, and the installation height of the tension wheel 10 can be adjusted by relative sliding between the first telescopic rod 41 and the second telescopic rod 42. When the first telescopic rod 41 and the second telescopic rod 42 are adjusted to a preset position, the fixing member 43 can limit the relative sliding between the first telescopic rod 41 and the second telescopic rod 42, thereby fixing the installation height of the tension wheel 10 at the preset position. Specifically, one end of the first telescopic rod 41 is connected to the bracket 30, and the other end of the first telescopic rod 41 is slidably sleeved with the second telescopic rod 42, and one end of the second telescopic rod 42 is connected to the mounting plate (not shown in the figure). At the connection between the first telescopic rod 41 and the second telescopic rod 42, a plurality of limiting holes 45 are spaced apart along the axial direction of the first telescopic rod 41 and the second telescopic rod 42, and the limiting holes 45 on the first telescopic rod 41 correspond to the limiting holes 45 on the second telescopic rod 42. When the first telescopic rod 41 and the second telescopic rod 42 are adjusted to the preset position, the fixing member 43 can be inserted into the limiting hole 45 to limit the relative sliding between the first telescopic rod 41 and the second telescopic rod 42. The first telescopic rod 41 and the second telescopic rod 42 can also be connected by a spring to assist the lengthening or shortening adjustment of the height adjusting member 40.

[0022] In one embodiment, if Figure 5As shown, the height adjustment member 40 includes a screw rod 44, one end of which is connected to the bracket 30, and the other end of the screw rod 44 is used to connect to the mounting plate. A nut is sleeved on the end of the screw rod 44 connected to the mounting plate, and the nut is used to fix the screw rod 44. The installation height of the tensioning wheel 10 can be adjusted by changing the position of the nut on the screw rod 44. Specifically, there can be four screw rods 44, and two nuts are arranged on each screw rod 44. The two nuts are respectively located on opposite sides of the mounting plate. The two nuts clamp the screw rod 44 on the mounting plate to prevent the tensioning device 100 from shaking during operation, thereby ensuring the stability of the tensioning device 100. By rotating the nut, the position of the nut on the screw rod 44 can be changed, thereby changing the installation height of the screw rod 44. The screw rod 44 drives the tensioning wheel 10 to approach or move away from the mounting plate to adjust the installation height of the tensioning wheel 10. The screw rod 44 is arranged to cooperate with the nut, so that the screw rod 44 can be clamped and fixed on the mounting plate to ensure the stability of the tensioning device 100, and the installation height of the tensioning wheel 10 can be adjusted.

[0023] The following describes the rotational connection between the tension wheel 10 and the main shaft 20. Optionally, the main shaft 20 is cylindrical, and correspondingly, the tension wheel 10 is annular, and the tension wheel 10 is sleeved on the main shaft 20 so that the tension wheel 10 can rotate around the main shaft 20. Figure 2 , Figure 3 In one embodiment, the tensioning device 100 includes a bearing 50, which is installed between the main shaft 20 and the tensioning wheel 10. The bearing 50 is sleeved on the main shaft 20, and the inner ring and outer ring of the bearing 50 are respectively connected to the main shaft 20 and the tensioning wheel 10, so that the tensioning wheel 10 can rotate around the main shaft 20. Balls are arranged between the inner ring and the outer ring of the bearing 50, which can reduce the friction between the inner and outer rings, thereby reducing the friction between the tensioning wheel 10 and the main shaft 20, and reducing the influence of the tensioning wheel 10 on the movement of the chain.

[0024] In one embodiment, if Figure 2 , Figure 3 As shown, the tensioning device 100 includes a sealing ring 60, which is sleeved on the main shaft 20 and is used to seal the bearing 50, thereby preventing dust from entering the bearing 50, thereby ensuring the reliability of the bearing 50. The sealing ring 60 can be made of rubber.

[0025] See also Figure 2 , Figure 3In one embodiment, the tensioning device 100 includes an end cover 70, which is connected to the end of the tensioning wheel 10, and the end cover 70 abuts against the bearing 50 to limit the axial movement of the bearing 50 along the main shaft 20. Specifically, a step may be provided on the main shaft 20, one side of the bearing 50 abuts against the step, and the end cover 70 is installed on both sides of the main shaft 20. A raised ring is provided on one side of the end cover 70 to support the inner ring of the bearing 50, so that the bearing 50 is blocked by the end cover 70 and the steps on the main shaft 20 in the axial direction of the main shaft 20, which can limit the axial movement of the bearing 50 and ensure the stable operation of the bearing 50.

[0026] The main shaft 20 can be fixedly connected to the bracket 30, such as welded to the bracket 30. In one embodiment, the main shaft 20 and the bracket 30 are detachably connected. Optionally, the connection between the main shaft 20 and the bracket 30 is threaded or clamped. The main shaft 20 and the bracket 30 are detachably connected, which can facilitate the replacement of the main shaft 20 and the tensioning wheel 10 after wear.

[0027] In one embodiment, if Figure 5 As shown, the bracket 30 includes a base 31 and a support arm 32, one end of the support arm 32 is connected to the base 31, and the other end of the support arm 32 is provided with a slot 321. The opposite sides of the main shaft 20 are provided with grooves 21. When the main shaft 20 is assembled on the bracket 30, the groove wall of the groove 21 is engaged in the groove wall of the slot 321. By providing the slot 321 on the support arm 32 and the groove 21 on the main shaft 20, the groove 21 cooperates with the slot 321, so that the main shaft 20 can be connected to the bracket 30, which is convenient for replacing the main shaft 20 and the tension wheel 10 after wear; and it can also prevent the tension wheel 10 from shaking when it rotates, thereby ensuring the stability of the tension wheel 10.

[0028] See also Figure 3 In one embodiment, the tensioning wheel 10 is provided with a support portion 11. The support portion 11 protrudes from the surface of the tensioning wheel 10, and steps are formed at both ends of the support portion 11. The width of the support portion 11 is equal to the inner width of the inner link of the chain. When the chain is running, the support portion 11 can be engaged between the inner links of the chain, so that the support portion 11 can limit the lateral swing of the chain and ensure the stable operation of the chain.

[0029] In one embodiment, if Figure 2 , Figure 3As shown, the tensioning device 100 includes a grease nipple 80 for injecting lubricating oil. The lubricating oil can be in the form of paste. The lubricating oil is injected through the grease nipple 80, and the lubricating oil fills the gap between the main shaft 20 and the tensioning wheel 10, thereby providing lubrication for the bearing 50 to reduce the friction between the tensioning wheel 10 and the main shaft 20. A mounting hole 12 is provided on the support portion 11, and the grease nipple 80 is installed at the opening of the mounting hole 12 and accommodated in the mounting hole 12. Accommodating the grease nipple 80 in the mounting hole 12 can prevent the grease nipple 80 from being exposed and affecting the operation of the chain.

[0030] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A tensioning device, characterized in that: Used to adjust the tension of the chain of the conveying equipment, the tensioning device comprises: A tensioning wheel, a main shaft and a bracket, wherein the main shaft is supported on the bracket, the tensioning wheel is sleeved on the main shaft, the tensioning wheel is rotatably connected to the main shaft, and the tensioning wheel is used to apply a force to the chain to adjust the tension of the chain; The tensioning wheel is provided with a supporting portion, the width of the supporting portion is equal to the inner width of the inner link of the chain, and when the chain is running, the supporting portion can be engaged between the inner links of the chain.

2. The tensioning device according to claim 1, characterized in that: The tensioning device comprises a height adjusting member, which is connected to the bracket and is used to adjust the installation height of the tensioning wheel.

3. The tensioning device according to claim 2, characterized in that: The height adjustment member includes a screw rod, one end of which is connected to the bracket, and the other end of the screw rod is used to connect to the mounting plate. A nut is sleeved on the end of the screw rod connected to the mounting plate, and the nut is used to fix the screw rod. The installation height of the tensioning wheel can be adjusted by changing the position of the nut on the screw rod.

4. The tensioning device according to claim 1, characterized in that: The main shaft is detachably connected to the bracket.

5. The tensioning device according to claim 4, characterized in that: The bracket includes a base and a support arm, one end of the support arm is connected to the base, the other end of the support arm is provided with a slot, and grooves are provided on the opposite sides of the main shaft. When the main shaft is assembled on the bracket, the groove wall of the groove is engaged with the groove wall of the slot.

6. The tensioning device according to claim 1, characterized in that: The tensioning device includes a bearing, which is installed between the main shaft and the tensioning wheel. The bearing is sleeved on the main shaft. The inner ring and outer ring of the bearing are respectively connected to the main shaft and the tensioning wheel, so that the tensioning wheel can rotate around the main shaft.

7. The tensioning device according to claim 6, characterized in that: The tensioning device comprises a sealing ring, which is sleeved on the main shaft and is used to seal the bearing.

8. The tensioning device according to claim 6, characterized in that: The tensioning device comprises an end cover, which is connected to the end of the tensioning wheel and abuts against the bearing to limit the axial movement of the bearing along the main shaft.

9. The tensioning device according to claim 3, characterized in that: The tensioning device comprises a refueling nozzle for injecting lubricating oil. A mounting hole is provided on the support portion. The refueling nozzle is installed at the opening of the mounting hole and is accommodated in the mounting hole.

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