CN2814021Y - Adjustable leather belt tension device - Google Patents

Abstract

The utility model belongs to the improvement of a mechanical transmission device, in particular to an adjustable belt tensioning device, which comprises a driving wheel equipped with a belt, a driven wheel and a tensioning wheel matched with the belt. The upper hinge is connected to the air cylinder or hydraulic cylinder, and the tension wheel is installed on the wheel frame at the end of the piston rod of the air cylinder or hydraulic cylinder. The upper end of the connecting rod is hinged on the axle of the tension wheel, and the lower end of the connecting rod is hinged on the lower side of the support On the hinged seat of the support, fine-tuning bolts are respectively installed in the screw holes on both sides of the horizontal seat plate of the support. The utility model can not only tension the belt according to the stretching and lengthening of the belt during operation, but also make the tension force on the belt constant, and can also adjust the angle between the tensioning wheel and the belt to prevent the belt from running off.

Description

Adjustable belt tensioner

technical field

The utility model belongs to the improvement of a mechanical transmission device, in particular to an adjustable belt tensioning device.

Background technique

In the flat belt transmission of the existing mechanical transmission, in order to prevent the belt from slipping, many measures are adopted to prevent the belt from slipping. There is a method of moving the driving wheel or the driven wheel, lengthening the center distance between the two wheels, and tensioning the belt. Another method is to add a tensioning pulley to the slack part of the belt, push the tensioning pulley to tighten the belt, and fix the tensioning pulley with bolts. But a belt tensioned using the above two methods will still slip as the belt stretches and becomes longer. If the belt is over-tensioned by adjusting the tension pulley, the load on the equipment will be excessively increased, which will affect the operation accuracy and working life of the equipment, and will also increase the power consumption. In order to overcome the problems of the above-mentioned tensioning device, the fixed tensioning wheel is changed to a floating tensioning wheel: Scheme 1 is to connect a spring-supported wheel base on the fixed support, and the tensioning wheel is installed on the wheel base. Push the tension pulley to tension the belt. Scheme 2 is that the free end of the connecting rod hinged on the fixed support is equipped with a tensioning wheel, and a heavy hammer is hung on the connecting rod, and the tensioning wheel that presses the belt is exerted on the belt by using the gravity of the tensioning wheel and the heavy hammer itself. The force is divided horizontally, tensioning the belt. The two schemes of the above-mentioned floating tension pulley can be dynamically tensioned for stretched elongated belts. However, along with the elongation of the belt, the thrust produced by the spring or the weight on the tension pulley is also changing, so that the tension force on the belt is always unbalanced. In addition, the angle between the tensioning wheel and the belt cannot be adjusted, and the belt is easy to run off.

Contents of the invention

The purpose of this utility model is to provide an adjustable belt tensioning device, which can not only follow the tension of the belt according to the stretching and lengthening of the belt during operation, but also make the tension of the belt constant, and can also adjust the tension. The angle between the tension wheel and the belt prevents the belt from running off.

The purpose of this utility model is achieved in this way: an adjustable belt tensioning device, including a driving pulley with a belt, a driven pulley and a tensioning pulley matched with the belt, the support is installed on the frame, and on the support The upper hinge is connected to the air cylinder or hydraulic cylinder, and the tension wheel is installed on the wheel frame at the end of the piston rod of the air cylinder or hydraulic cylinder. The upper end of the connecting rod is hinged on the axle of the tension wheel, and the lower end of the connecting rod is hinged on the lower side of the support. On the hinged seat of the support, fine-tuning bolts are respectively installed in the screw holes on both sides of the horizontal seat plate of the support.

When the utility model works, compressed air or hydraulic oil supplies gas or oil to the cylinder or hydraulic cylinder through the pipeline, and the piston of the cylinder or hydraulic cylinder drives the tension wheel forward to press the belt to tension the belt. Since the pressure of compressed air or hydraulic oil supplied to the air cylinder or hydraulic cylinder can be adjusted through the pressure regulating valve, the thrust of the tensioning wheel can be easily adjusted. The thrust provided is constant. During the running of the belt, as the stretching of the belt becomes longer, the air cylinder or hydraulic cylinder automatically pushes the tensioning wheel to provide constant pressure to the belt to ensure the balanced tension of the belt, so that the equipment can work normally and ensure the operation of the equipment. accuracy and increased working life. In addition, the angle between the tensioning pulley and the belt can be adjusted through the fine-tuning bolt installed on the horizontal seat plate of the support, so as to prevent the belt from running off.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing.

Fig. 1 is the main view structure schematic diagram of the utility model;

Fig. 2 is a right view structure diagram of the utility model.

Detailed ways

An adjustable belt tensioning device, as shown in Figure 1 and Figure 2, includes a driving wheel 8 equipped with a belt, a driven wheel 9 and a tensioning wheel 1 matched with the loose side of the belt, and the cross section is inverted L-shaped The support 4 is installed on the frame 6, the vertical seat plate of the support 4 is connected with the frame 6 through the bolt 5, and the cylinder 2 or the hydraulic cylinder is hinged on the horizontal seat plate of the support 4 through the hinge seat, and the cylinder 2 or the hydraulic cylinder The tension wheel 1 is installed on the wheel frame at the end of the cylinder piston rod, the upper end of the connecting rod 7 is hinged on the axle of the tension wheel 1, and the lower end of the connecting rod 7 is hinged on the hinge seat of the vertical seat plate on the lower side of the support 4 In the screw holes on both sides of the horizontal seat plate of the support 4, fine-tuning bolts 3 are respectively installed. Adjust the fine-tuning bolt 3 to make the bearing 4 take the bolt 5 on its vertical seat plate as the rotating shaft to adjust the angle between the tension pulley 1 and the belt to prevent the belt from running off.

Claims (2)

1, a kind of adjustable belt tension device, comprise the driving wheel (8) that belt is housed, driven wheel (9) and the Idle wheel (1) that matches with belt, it is characterized in that: bearing (4) is installed on the frame (6), go up articulated cylinder (2) or oil hydraulic cylinder at bearing (4), Idle wheel (1) is installed on the wheel carrier of cylinder (2) or hydraulic cylinder piston boom end, the upper end of connecting rod (7) is hinged on the wheel shaft of Idle wheel (1), the lower end of connecting rod (7) is hinged on the hinged seat of bearing (4) lower side, in the screw of the horizontal seat board of bearing (4) both sides trimming bolt (3) is installed respectively.

2, adjustable belt tension device according to claim 1 is characterized in that: cross section is installed on the frame (6) for being inverted L shaped bearing (4), and its vertical seat board is connected with frame (6) by bolt (5).