Tensioning device for chain

Abstract

The utility model provides a tensioning device for a chain. The tensioning device comprises a fixing frame, a supporting frame, a supporting structure, a pressure sensor, an adjusting sliding block, a guide rod, an elastic pressing mechanism, two locking structures, two adjusting mechanisms and two jacking mechanisms. The supporting frame is arranged on the inner side of the fixing frame, the supporting structure is arranged on the front side end face of the supporting frame, the middle of the supporting structure is of a hollow structure, the guide rod penetrates through the hollow structure of the supporting structure and then is connected with the bottom of the supporting structure through the elastic pressing mechanism, and the adjusting sliding block is arranged at the top of the guide rod and used for tensioning a chain. According to the tensioning device for the chain, the problem that the chain is not tensioned in place or is excessively tensioned due to the fact that the tensioning device in the related technology is adjusted through actual production experience or fixed duration is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chain tensioning technical field, especially a kind of tensioner for chain. BACKGROUND

[0002] Chain drive is a kind of transmission mode that the movement and power of driving sprocket with special tooth shape are transmitted to driven sprocket with special tooth shape through chain.In the working condition of large center distance, fixed speed ratio, multi-shaft transmission, and in the open transmission of severe environment, transmission of large impact and vibration, low-speed transmission of large load, high-speed transmission of good lubrication, medium and long distance conveying transmission, chain transmission will bring obvious technical benefits and economic benefits.High-end chain transmission system is the irreplaceable key basic part of many important mechanical equipment.But when the perpendicularity of chain is too large, exit engagement is poor, chain vibration, tooth skipping or chain-off phenomenon occurs, so tensioning device is needed to solve this phenomenon.The tensioning device in the prior art is adjusted by actual production experience or fixed time, which causes chain tensioning not in place or over-tensioning, resulting in chain wear. SUMMARY

[0003] Therefore, the utility model aims at solving one of the problems in the related art at least to some extent.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A tensioning device for chain, comprising a fixed frame, a support frame, a support structure, a pressure sensor, an adjusting sliding block, a guide rod, an elastic compression mechanism, two locking structures, two adjusting mechanisms and two jacking mechanisms.

[0006] The support frame is arranged on the inner side of the fixed frame, the support structure is arranged on the front side end face of the support frame, the middle part of the support structure is a hollow structure, the guide rod penetrates through the hollow structure of the support structure and is connected with the bottom of the support structure through the elastic compression mechanism, the adjusting sliding block is arranged on the top of the guide rod, and the adjusting sliding block is used for tensioning chain.

[0007] One locking structure and adjusting mechanism are arranged on the left and right sides of the support frame respectively, the support frame is connected and fixed between the fixed frame and the support frame through the locking structure, and the adjusting mechanism is used for adjusting the height of the support frame.

[0008] The pressure sensor is arranged on the top of the support structure, and the pressure sensor is located between the support structure and the adjusting sliding block.

[0009] The two jacking mechanisms are symmetrically arranged on the bottom of the fixed frame, and the jacking mechanism is used for adjusting the height of the support frame.

[0010] Further, the support structure comprises a support frame and two bottom pressing plates, the support frame and the two bottom pressing plates are arranged on the front end surface of the support frame, the two bottom pressing plates are arranged on the bottom of the support frame, the inner side of the support frame is a hollow structure, the guide rod penetrates through the support frame, the guide rod is pressed against the bottom pressing plate through the elastic pressing mechanism, and the pressure sensor is arranged on the upper end surface of the support frame.

[0011] Further, the elastic pressing mechanism comprises a pressing spring and a limiting baffle, the limiting baffle and the pressing spring are arranged on the guide rod, and the pressing spring is located between the bottom pressing plate and the limiting baffle.

[0012] Further, the locking structure comprises a strip-shaped hole and a locking bolt, the fixed frame is provided with a fixed plate, the strip-shaped hole is arranged on the support frame, and the strip-shaped hole is connected and fixed with the fixed plate through the locking bolt.

[0013] Further, the adjusting mechanism comprises a cross rod, a rib plate, an adjusting bolt and a locking nut, the cross rod is connected and fixed with the fixed frame through the rib plate, the adjusting bolt is threadedly connected with the end portion of the cross rod, the adjusting bolt is connected and fixed with the cross rod through the locking nut, the side portion of the support frame is provided with a protrusion, and the top portion of the adjusting bolt is opposite to the protrusion.

[0014] Further, the fixed frame comprises a bottom plate, a top plate, a vertical plate, a rear baffle and an ear plate, the top plate and the bottom plate are symmetrically arranged up and down, the vertical plate is arranged between the bottom plate and the top plate, the ear plate is arranged on the outer end surface of the vertical plate, the support frame is arranged between the top plate and the bottom plate, the top plate is provided with a first slot, the adjusting sliding block is arranged in the slot, the cross rod is connected with the rear baffle, and the bottom plate is provided with a second slot capable of cooperating with the output end of the jacking mechanism.

[0015] Further, the jacking mechanism comprises an electric push rod and a push rod mounting frame, the electric push rod is connected with the lower end surface of the fixed frame through the push rod mounting frame, and the output end of the electric push rod is used for pushing the support structure to move in the vertical direction.

[0016] Compared with the prior art, the tensioning device for the chain has the following advantages:

[0017] 1、The pressure sensor is arranged at the top of the support structure, and can detect the tension of the chain in real time by sensing the force between the adjusting slider and the chain. This real-time monitoring method can avoid the errors of traditional manual judgment or fixed time adjustment, and ensure that the chain is always in the best tension state, thereby improving the reliability and efficiency of transmission. The pressure sensor can accurately detect the real-time force on the chain. If the tension is too large, it will increase the friction between the chain and the sprocket, accelerating wear. The pressure sensor can effectively avoid applying excessive tension through feedback control, thereby protecting the chain and sprocket, prolonging their service life, and reducing maintenance costs.

[0018] 2、The elastic pressing mechanism includes a pressing spring and a limiting baffle. Through the elastic action of the spring, it can automatically adapt to the relaxation or tension of the chain during operation. When the chain is relaxed due to operation, the spring will compress the guide rod to automatically compensate the tension and prevent the chain from loosening. When the chain is temporarily stressed too much due to thermal expansion and contraction or load fluctuation, the spring can release part of the pressure to avoid applying excessive tension to the chain. The elastic pressing mechanism utilizes the elastic properties of the spring to act as a buffer when the chain is subjected to sudden impact load. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application. The embodiments of the application and its

[0020] Figure 1 A schematic view of a tensioning device for a chain according to an embodiment of the application;

[0021] Figure 2 A schematic view of a fixed frame structure according to an embodiment of the application;

[0022] Figure 3 A schematic view of a support structure according to an embodiment of the application;

[0023] Figure 4 A schematic view of an adjusting mechanism structure according to an embodiment of the application;

[0024] Figure 5 A front view of a tensioning device for a chain according to an embodiment of the application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, adjusting slider; 101, top plate; 102, bottom plate; 103, vertical plate; 104, ear plate; 2, support frame; 21, support frame body; 3, guide rod; 4, compression spring; 5, bottom pressing plate; 6, adjusting bolt; 61, cross bar; 62, rib plate; 63, adjusting nut; 7, locking bolt; 8, pressure sensor; 9, fixed plate; 10, push rod mounting bracket; 11, electric push rod. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0029] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] A tensioning device for a chain, as shown in Figure 1 It comprises a fixing frame, a support frame 2, a support structure, a pressure sensor 8, an adjusting slider 1, a guide rod 3, an elastic compression mechanism, two locking structures, two adjusting mechanisms and two jacking mechanisms.

[0032] The support frame 2 is located inside the fixed frame, and the support structure is located on the front end face of the support frame 2. The middle part of the support structure is hollow. The guide rod 3 passes through the hollow structure of the support structure and is connected to the bottom of the support structure through an elastic clamping mechanism. The adjusting slider 1 is located on the top of the guide rod 3 and is used to tension the chain. The pressure sensor 8 is located on the top of the support structure and is located between the support structure and the adjusting slider 1.

[0033] The pressure sensor 8 is located at the top of the support structure. By sensing the force between the adjusting slider 1 and the chain, it can detect the chain tension in real time. This real-time monitoring method avoids the errors of traditional methods that rely on manual judgment or fixed-time adjustments, ensuring that the chain is always at its optimal tension, thereby improving the reliability and efficiency of the transmission. The pressure sensor 8 can accurately detect the real-time force on the chain. If the tension is too high, it will increase the friction between the chain and the sprocket, accelerating wear. The pressure sensor 8, through feedback control, can effectively avoid applying excessive tension, thereby protecting the chain and sprocket, extending their service life, and reducing maintenance costs.

[0034] A locking structure and an adjustment mechanism are respectively provided on the left and right sides of the support frame 2. The locking structure secures the support frame 2 to the fixed frame, and the adjustment mechanism is used to adjust the height of the support frame 2; for example Figure 4 As shown, the adjustment mechanism includes a crossbar 61, a stiffener 62, an adjusting bolt 6, and a locking nut. The crossbar 61 is connected and fixed to the fixed frame through the stiffener 62. The adjusting bolt 6 is threaded to the end of the crossbar 61. The adjusting bolt 6 is connected and fixed to the crossbar 61 through the locking nut. The support frame 2 has a protrusion on its side, and the top of the adjusting bolt 6 is directly opposite the protrusion.

[0035] Two lifting mechanisms are symmetrically arranged at the bottom of the fixed frame. The lifting mechanisms are used to adjust the height of the support frame 2. The lifting mechanism includes an electric push rod 11 and a push rod mounting bracket 10. The electric push rod 11 is connected to the lower end face of the fixed frame through the push rod mounting bracket 10. The output end of the electric push rod 11 is used to push the support structure to move in the vertical direction.

[0036] like Figure 3 As shown, the support structure includes a support frame 21 and two bottom pressure plates 5. The support frame 21 and the two bottom pressure plates 5 are both located on the front end face of the support frame 2. The two bottom pressure plates 5 are located at the bottom of the support frame 21. The inner side of the support frame 21 is a hollow structure. The guide rod 3 passes through the support frame 21. The guide rod 3 abuts against the bottom pressure plate 5 through an elastic clamping mechanism. The pressure sensor 8 is located on the upper end face of the support frame 21.

[0037] The elastic pressing mechanism comprises a pressing spring 4 and a limiting baffle, the limiting baffle and the pressing spring 4 are arranged on the guide rod 3, and the pressing spring 4 is arranged between the bottom pressing plate 5 and the limiting baffle.

[0038] The locking structure comprises a strip-shaped hole and a locking bolt 7, the fixed frame is provided with a fixed plate 9, the strip-shaped hole is arranged on the support frame 2, and the strip-shaped hole is connected and fixed with the fixed plate 9 through the locking bolt 7.

[0039] As shown in Figure 2 The fixed frame comprises a bottom plate 102, a top plate 101, a vertical plate 103, a rear baffle and an ear plate 104, the top plate 101 and the bottom plate 102 are symmetrically arranged upwards and downwards, the vertical plate 103 is arranged between the bottom plate 102 and the top plate 101, the ear plate 104 is arranged on the outer side end face of the vertical plate 103, the support frame 2 is arranged between the top plate 101 and the bottom plate 102, the top plate 101 is provided with a first slot, the adjusting sliding block 1 is arranged in the slot, the horizontal rod 61 is connected with the rear baffle, and the bottom plate 102 is provided with a second slot capable of cooperating with an output end of the jacking mechanism.

[0040] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A tensioning device for a chain, characterized in that: It includes a fixed frame, a support frame (2), a support structure, a pressure sensor (8), an adjusting slider (1), a guide rod (3), an elastic clamping mechanism, two locking structures, two adjusting mechanisms, and two lifting mechanisms; The support frame (2) is located inside the fixed frame. The support structure is located on the front end face of the support frame (2). The middle part of the support structure is hollow. The guide rod (3) passes through the hollow structure of the support structure and is connected to the bottom of the support structure through the elastic clamping mechanism. The adjusting slider (1) is located on the top of the guide rod (3). The adjusting slider (1) is used to tension the chain. The support frame (2) is provided with a locking structure and an adjustment mechanism on both the left and right sides. The support frame (2) is fixed to the fixed frame through the locking structure. The adjustment mechanism is used to adjust the height of the support frame (2). The pressure sensor (8) is disposed on the top of the support structure, and the pressure sensor (8) is located between the support structure and the adjusting slider (1); Two lifting mechanisms are symmetrically arranged at the bottom of the fixed frame, and the lifting mechanisms are used to adjust the height of the support frame (2).

2. A tensioning device for a chain according to claim 1, characterized in that: The support structure includes a support frame (21) and two bottom pressure plates (5). The support frame (21) and the two bottom pressure plates (5) are both located on the front end face of the support frame (2). The two bottom pressure plates (5) are located at the bottom of the support frame (21). The inner side of the support frame (21) is a hollow structure. The guide rod (3) passes through the support frame (21). The guide rod (3) abuts against the bottom pressure plate (5) through the elastic clamping mechanism. The pressure sensor (8) is located on the upper end face of the support frame (21).

3. A tensioning device for a chain according to claim 2, characterized in that: The elastic clamping mechanism includes a clamping spring (4) and a limiting baffle. The limiting baffle and the clamping spring (4) are both disposed on the guide rod (3). The clamping spring (4) is located between the bottom pressure plate (5) and the limiting baffle.

4. A tensioning device for a chain according to claim 3, characterized in that: The locking structure includes a strip hole and a locking bolt (7). The fixing frame is provided with a fixing plate (9). The strip hole is set on the support frame (2). The strip hole is connected and fixed to the fixing plate (9) by the locking bolt (7).

5. A tensioning device for a chain according to claim 4, characterized in that: The adjustment mechanism includes a crossbar (61), a stiffener (62), an adjusting bolt (6), and a locking nut. The crossbar (61) is connected and fixed to the fixed frame through the stiffener (62). The adjusting bolt (6) is threaded to the end of the crossbar (61). The adjusting bolt (6) is connected and fixed to the crossbar (61) through the locking nut. The support frame (2) has a protrusion on its side, and the top of the adjusting bolt (6) is directly opposite the protrusion.

6. A tensioning device for a chain according to claim 5, characterized in that: The fixing frame includes a base plate (102), a top plate (101), a vertical plate (103), a rear baffle, and an ear plate (104). The top plate (101) and the base plate (102) are arranged symmetrically on the top and bottom. The vertical plate (103) is arranged between the base plate (102) and the top plate (101). The ear plate (104) is arranged on the outer end face of the vertical plate (103). The support frame (2) is arranged between the top plate (101) and the base plate (102). The top plate (101) is provided with a first slot. The adjusting slider (1) is arranged in the slot. The crossbar (61) is connected to the rear baffle. The base plate (102) is provided with a second slot that can cooperate with the output end of the lifting mechanism.

7. A tensioning device for a chain according to any one of claims 1-6, characterized in that: The lifting mechanism includes an electric push rod (11) and a push rod mounting bracket (10). The electric push rod (11) is connected to the lower end face of the fixed frame through the push rod mounting bracket (10). The output end of the electric push rod (11) is used to push the support structure to move in the vertical direction.

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