CN106364853A - Tightening device - Google Patents

Abstract

The invention discloses a tightening device, which comprises a base, a slider, a stopper, an adjustment bolt, a stopper locking bolt, a slider locking bolt, a sprocket, a guide rail and a guide groove; the base is provided with a sprocket There is a rectangular opening on the position, and there is a guide rail on the opposite sides of the rectangular opening; the slider is provided with guide grooves on both sides in the length direction, the slider is set on the guide rail, and the slider is fixed by bearings and bearing seats. The sprocket is connected; the stopper is inlaid on the opening of the rectangular opening of the base and fixedly connected by two stopper locking bolts, and the adjusting bolt is set at the center of the stopper; the upper and lower sides of the guide groove are provided with through grooves, Two locking bolt holes are arranged at the corresponding positions of the guide rail; the sliding block locking bolts are arranged on the through groove. The design structure of the device is simple, scientific, reasonable, practical and low in maintenance cost. Only by adjusting one bolt, the tension of the chain can be adjusted to make the transmission of the chain higher and more stable.

Description

a tightening device

technical field

The invention relates to the technical field of machinery, in particular to a tensioning device for adjusting the tension of a chain.

Background technique

In the field of modern production, it is common to adjust the chain. If the chain is too tight, the power transmission will be laborious, and the energy consumed will also increase and shorten the service life of the chain. If the chain is too loose, the transmission efficiency will be reduced or appear. Imagine slipping, which is not conducive to the transmission of power. Whether the tension is too large or too small, it will affect the accuracy and efficiency of the transmission process, and even affect the accuracy or quality of product processing. It can be seen that tightening the sprocket is very important in the production process, but the structural design of the current chain tightening method is complicated and the operation steps are also cumbersome and the cost is also high, which will bring troubles to the operator and may be caused by the operation. Complex errors in the operation process will bring corresponding losses.

Contents of the invention

In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a cheap, simple and fast chain tightening device, which is also suitable for belts.

In order to realize above-mentioned purpose the present invention has taken following technical scheme:

A tightening device according to the present invention includes a base, a slider, a stopper, an adjustment bolt, a stopper locking bolt, a slider locking bolt, a sprocket, a guide rail and a guide groove; There is a rectangular opening on the position where the sprocket is located, and there is a guide rail on the two opposite sides of the rectangular opening; the slider is provided with guide grooves on both sides in the length direction, and the slider is arranged on the guide rail , the slider is fixedly connected with a sprocket through a bearing and a bearing seat; the stopper is embedded in the opening of the rectangular opening of the base and is fixedly connected by two stopper locking bolts, and the tightening The bolt is set in the center of the block, and when the bolt is rotated and tightened, the force acting on the slider can be concentrated on the center line of the slider; the upper and lower sides of the guide groove are provided with through grooves, and the guide rail Two locking bolt holes are provided at the corresponding positions; slider locking bolts are provided on the through groove for locking the slider.

The adjustment device of the present invention adopts a simple mechanical design, and can quickly complete the adjustment of the tightness of the sprocket through the medium of the slider, which is convenient and fast.

Further, it also includes a pre-tightening spring, and the pre-tightening spring is arranged at the center of the bottom surface of the rectangular opening of the base, and is used to act on the slider so that the slider always maintains a stressed state.

Further, the contact surface of the guide rail and the guide groove is frosted, which increases the friction between the guide rail and the guide groove, making it difficult for the two to move relative to each other.

Further, the adjusting bolts are hexagon socket bolts or hand-tightened bolts, which are convenient to adjust.

Further, the sprocket is centrally arranged on the slider, so that the stress on each part is uniform.

The invention has the advantages of simple, scientific, reasonable and practical design structure, the materials and parts used can be bought freely in the market, and the processing is simple.

Description of drawings

Fig. 1 is the specific structural diagram of a kind of tightening device of the present invention;

Fig. 2 is a perspective view of a tensioning device of the present invention.

detailed description

As shown in Figure 1, it is a specific structural diagram of the present invention. It can be seen from the figure that the tightening device includes a base 1, a slider 2, a stopper 3, an adjustment bolt 4, a stopper locking bolt 5, a slider locking bolt 6, The sprocket 7, the guide rail 8, the guide groove 9, the through groove 10 and the pre-tension spring 11, the base 1 and the slider 2 are slidingly fitted. The base 1 is provided with a rectangular opening at the position where the sprocket 7 is provided, and guide rails 8 are integrally arranged on the two sides opposite to the opening of the rectangular opening, and two guide rails 8 are respectively punched at corresponding positions. The slider locks the bolt hole, and the center position of the bottom surface of the rectangular opening of the base 1 is fixed with a pre-tension spring 11, which can make the slider 2 always receive the force and maintain the working state; the slider 2 in the length direction A guide groove 9 is respectively arranged on both sides, and the guide groove 9 cooperates with the guide rail 8 on the base 1 to ensure that the slider 2 always keeps sliding horizontally when the force is uneven; the guide rail 8 and the guide groove The contact surfaces of 9 are frosted, which increases the friction between the guide rail 8 and the guide groove 9, so that the two are not easy to move relative to each other. The upper and lower sides of the guide groove 9 are provided with through grooves 10 , and the slider locking bolts 6 are arranged on the through grooves 10 .

As shown in Figure 2, the center position of the slider 2 is fixed with a sprocket 7 through the shaft and the bearing seat; the stopper 3 is embedded in the opening of the rectangular opening of the base 1 and locked by two stoppers The tightening bolt 5 is fixed, and the center position of the block 3 is provided with an adjusting bolt screw 4, and the adjusting bolt 4 is an inner hexagon bolt or a hand-tightened bolt, which is convenient to adjust; by rotating the adjusting bolt 4, the sliding block is adjusted to perform linear motion. , to adjust the tension of the chain, when the proper tension is reached, just tighten the four slider locking bolts 6; while adjusting the slider 2, the pre-tightening spring 8 will shrink and generate an outward thrust to make the adjustment bolt 4 Creates a preload that makes it less likely to loosen.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned examples, and what the above-mentioned examples and the description in the description are only the principle of the present invention, without departing from the spirit and scope of the present invention, the present invention will also have various Variations and improvements, which fall within the scope of the claimed invention.

Claims (5)

1. A tightening device, characterized in that it comprises a base (1), a slider (2), a stopper (3), an adjusting bolt (4), a stopper locking bolt (5), a slider locking Bolt (6), sprocket (7), guide rail (8) and guide groove (9); There is a rectangular opening on the position where the sprocket (7) is arranged on the base (1), and there is a guide rail (8) on the two opposite sides of the rectangular opening; Guide grooves (9) are arranged on both sides of the guide rail (8), and the slider (2) is fixedly connected with a sprocket (7) through a bearing and a bearing seat on the guide rail (8). ; The block (3) is embedded in the opening of the rectangular mouth of the base (1) and is fixedly connected by two block locking bolts (5), and the adjusting bolt (4) is arranged on the block ( 3) Center position; The upper and lower sides of the guide groove (9) are provided with through grooves (10), and the corresponding positions of the guide rail (8) are provided with two locking bolt holes; the through grooves (10) are provided with There are slider locking bolts (6). 2. A tensioning device according to claim 1, characterized in that it also includes a pre-tension spring (11), and the said pre-tension spring (11) is arranged at the center of the bottom surface of the rectangular opening of the base (1) position. 3. The tensioning device according to claim 1, characterized in that, the surface of the guide rail (8) in contact with the guide groove (9) is frosted. 4. A tightening device according to claim 1, characterized in that, said adjusting bolt (4) is a hexagon socket head bolt or a hand-tightened bolt. 5. A tensioning device according to claim 1, characterized in that the sprocket (7) is centrally arranged on the slider (2).