Adjustable chain tensioning mechanism

Abstract

The utility model discloses an adjustable chain tensioning mechanism in the field of chain wheel and chain assemblies, which comprises two chain wheels correspondingly arranged front and back, a chain is arranged between the two chain wheels, a fixing support is correspondingly arranged above the chain, and a lifting seat plate with the height capable of being adjusted up and down is connected to the fixing support. A fixed shaft is mounted on the lifting seat plate, and two bearings which are axially distributed at an interval are mounted on the fixed shaft. The chain between the driving chain wheel and the driven chain wheel can be tensioned, sufficient tension of the chain is ensured, the chain wheel and chain assembly is smooth in transmission and works normally, and the chain is prevented from slipping.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of sprocket chain assembly, in particular to adjustable chain tensioning mechanism. BACKGROUND

[0002] The scraper conveyor is the conveying equipment frequently used in the feed and oil industry, and the transmission system is the most important subsystem of the scraper conveyor, and the sprocket chain transmission system is the most important component in the transmission system of the scraper conveyor. The structure of the sprocket chain assembly comprises two corresponding driving sprockets and driven sprockets, a chain is arranged between the driving sprocket and the driven sprocket, the wheel shaft of the driving sprocket is in transmission connection with the output end of the motor, and the motor drives the driving sprocket to rotate through the chain to drive the driven sprocket. The problem is that: at present, when the chain is driven, the chain tension is often insufficient, which leads to the problem of sprocket chain transmission slip, and affects the normal work of the scraper conveyor. CONTENT

[0003] The utility model discloses a kind of adjustable chain tensioning mechanism, the chain between driving sprocket and driven sprocket can be tensioned, ensure that chain has sufficient tension, so that sprocket chain assembly transmission is smooth and normal work, avoid chain slip.

[0004] The utility model discloses a kind of adjustable chain tensioning mechanism, including two corresponding sprockets arranged in front and back, chain is arranged between the two sprockets, fixed support is correspondingly arranged above the chain, fixed support is connected with the height of lifting seat plate that can be adjusted up and down, fixed shaft is installed on the lifting seat plate, two bearings are installed on the fixed shaft, and the bearings are distributed in axial interval.

[0005] The fixed support of the utility model can be installed on the shell of the scraper conveyor, and is fixed with the shell through mounting plate. When the height of the lifting seat plate needs to be adjusted, loosen the compression nut, adjust the position of the lifting seat plate up and down, adjust the bolt to pass through the different positions of the waist-shaped groove and connect with the lifting seat plate, lock it through the compression nut, realize the height position of the bearing adjusted up and down, the outer ring of the bearing can rotate, the left and right side chain plates of the chain are pressed by the two bearings, so that the chain is pressed and has sufficient tension. Compared with prior art, the utility model has the beneficial effects that: the chain between driving sprocket and driven sprocket can be tensioned, ensure that chain has sufficient tension, so that sprocket chain assembly transmission is smooth and normal work, avoid chain slip.

[0006] As a further improvement of the utility model, the chain is horizontally arranged.

[0007] As a further improvement of the utility model, the fixed support comprises a horizontal mounting plate, a vertical fixing plate extending downward is integrally arranged on the mounting plate, a mounting hole is arranged on the mounting plate, and a vertical waist-shaped groove is arranged on the fixing plate.

[0008] As a further improvement of the utility model, the lifting seat plate is vertically arranged and is attached to the fixing plate, screw holes are arranged on the lifting seat plate corresponding to the waist-shaped groove, the adjusting bolt vertically passes through the waist-shaped groove and the screw hole in sequence, and the end of the adjusting bolt is sleeved with a compression nut for compressing the lifting seat plate.

[0009] As a further improvement of the utility model, the fixed shaft is perpendicular to the lifting seat plate, the fixed shaft comprises a coaxial mounting shaft body and a threaded shaft body, two annular mounting grooves are arranged on the outer periphery of the mounting shaft body at intervals, the mounting groove at the front end is adjacent to the threaded shaft body, two bearings are respectively sleeved at the two mounting grooves of the mounting shaft body, an elastic retaining ring is sleeved on the mounting groove at the rear end of the mounting shaft body, and the elastic retaining ring is in close contact with the corresponding bearing.

[0010] As a further improvement of the utility model, the width of the two bearings corresponding to the chain is set. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of the utility model.

[0012] Figure 2 It is a sectional view of the fixed support and the lifting seat plate.

[0013] Figure 3 It is a top view of the fixed shaft.

[0014] Figure 4 It is a top view of the chain.

[0015] Among them, 1 is a chain wheel, 2 is a chain, 3 is a fixed support, 3a is a mounting plate, 3b is a fixing plate, 4 is a lifting seat plate, 5 is a fixed shaft, 501 is a mounting shaft body, 502 is a threaded shaft body, 6 is a bearing, 7 is a mounting hole, 8 is a waist-shaped groove, 9 is a screw hole, 10 is an adjusting bolt, 11 is a compression nut, 12 is a mounting groove, 13 is an elastic retaining ring, and 14 is a locking nut. DETAILED DESCRIPTION

[0016] As Figures 1-4As shown, it is an adjustable chain tensioning mechanism, including two front and rear corresponding chain wheels 1, two chain wheels 1 are provided with chain 2, chain 2 is horizontally arranged; the upper portion of chain 2 is provided with a fixed support 3, the fixed support 3 is connected with a height-adjustable lifting seat plate 4, the lifting seat plate 4 is installed with a fixed shaft 5, and the fixed shaft 5 is installed with two axially spaced bearings 6. Two bearings 6 correspond to the width of chain 2.

[0017] The fixed support 3 includes a horizontal mounting plate 3a, the mounting plate 3a is integrally provided with a downwardly extending vertical fixed plate 3b, the mounting plate 3a is provided with a mounting hole 7, and the fixed plate 3b is provided with a vertical waist-shaped groove 8. The mounting hole 7 is provided with at least two. The lifting seat plate 4 is vertically arranged, the lifting seat plate 4 is attached to the fixed plate 3b, the lifting seat plate 4 is provided with a threaded hole 9 corresponding to the waist-shaped groove 8, and the adjusting bolt 10 is vertically passed through the waist-shaped groove 8 and the threaded hole 9 in sequence, and the end of the adjusting bolt 10 is provided with a compression nut 11 for compressing the lifting seat plate 4. The adjusting bolt 10 is connected with the lifting seat plate 4 by passing through different positions of the waist-shaped groove 8, and is locked by the compression nut 11, so that the height position of the lifting seat plate 4 is changed.

[0018] The fixed shaft 5 is perpendicular to the lifting seat plate 4, the fixed shaft 5 includes a coaxial mounting shaft body 501 and a threaded shaft body 502, the mounting shaft body 501 is provided with two spaced annular mounting grooves 12 on the outer periphery, the front mounting groove 12 is adjacent to the threaded shaft body 502, the two bearings 6 are respectively sleeved at the two mounting grooves 12 of the mounting shaft body 501, the mounting groove 12 at the rear end of the mounting shaft body 501 is sleeved with an elastic retaining ring 13, the elastic retaining ring 13 is tightly attached to the corresponding bearing 6, the bearing 6 is a deep groove ball bearing, the threaded shaft body 502 is sleeved with a locking nut 14, and the locking nut 14 compresses the inner ring of the front deep groove ball bearing. The outer rings of the two axially spaced bearings 6 compress the left and right side chain plates of the chain 2 to obtain tension.

[0019] The fixed support 3 of the utility model can be installed on the shell of the scraper conveyor, and is fixed with the shell through the mounting plate 3a. When the height of the lifting seat plate 4 needs to be adjusted, the compression nut 11 is loosened, the position of the lifting seat plate 4 is adjusted up and down, the adjusting bolt 10 is connected with the lifting seat plate 4 by passing through different positions of the waist-shaped groove 8, and is locked by the compression nut 11, so that the height position of the bearing 6 is adjusted up and down. The outer ring of the bearing 6 can rotate, the left and right side chain plates of the chain 2 are compressed by the two bearings 6, so that the chain 2 is compressed and has sufficient tension. The utility model has the advantages that the chain 2 between the driving sprocket 1 and the driven sprocket 1 can be tensioned, the chain 2 has sufficient tension, the sprocket 1 and chain 2 assembly can be smoothly and normally driven, and chain 2 slip is avoided.

[0020] The utility model discloses not limited to above embodiment, on the basis of the technical scheme disclosed in the utility model, the technical content disclosed in the utility model is not needed to make some substitution and deformation to some technical features among them according to the creative labor of the person skilled in the art, and these substitutions and deformations are all within the protection scope of the utility model.

Claims

1. An adjustable chain tensioning mechanism comprising two chain sprockets arranged in a front-rear correspondence, a chain being arranged between the two chain sprockets, characterized in that, The chain is provided with a fixed support above, a lifting seat plate with adjustable height is connected to the fixed support, a fixed shaft is installed on the lifting seat plate, and two bearings are distributed axially on the fixed shaft.

2. An adjustable chain tensioning mechanism according to claim 1, wherein, The chain is horizontally arranged.

3. An adjustable chain tensioning mechanism according to claim 1 or 2, wherein, The fixed support comprises a horizontal mounting plate, a vertical fixed plate extending downward is integrally arranged on the mounting plate, a mounting hole is arranged on the mounting plate, and a vertical waist-shaped slot is arranged on the fixed plate.

4. An adjustable chain tensioning mechanism according to claim 3, wherein, The lifting seat plate is vertically arranged and is attached to the fixed plate, screw holes are arranged on the lifting seat plate corresponding to the waist-shaped slot, an adjusting bolt is vertically arranged through the waist-shaped slot and the screw hole in sequence, and a compression nut is arranged on the end of the adjusting bolt to compress the lifting seat plate.

5. An adjustable chain tensioning mechanism according to claim 4, wherein, The fixed shaft is perpendicular to the lifting seat plate, the fixed shaft comprises a coaxial mounting shaft body and a threaded shaft body, two annular mounting slots are arranged on the outer periphery of the mounting shaft body, the mounting slot at the front end is adjacent to the threaded shaft body, the two bearings are respectively arranged on the two mounting slots of the mounting shaft body, an elastic stop ring is arranged on the mounting slot at the rear end of the mounting shaft body, the elastic stop ring is attached to the corresponding bearing, the bearing is a deep groove ball bearing, a locking nut is arranged on the threaded shaft body, and the locking nut compresses the inner ring of the front deep groove ball bearing.

6. An adjustable chain tensioning mechanism according to claim 5, wherein, The two bearings are arranged corresponding to the width of the chain.

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