CN207454705U - Multistage automatic liquid compression leg array reducing belt wheel - Google Patents

Abstract

Multi-stage automatic hydraulic column array variable diameter belt pulley, the hydraulic rear seat is equipped with hydraulic cylinders arranged in an array, the hydraulic rear seat 1 is connected to the pulley through a sleeve, and the two wheel rims of the pulley are respectively provided with arrayed feature holes, hydraulic pressure The cylinder includes a cylinder barrel, which is provided with an oil inlet for entering and exiting hydraulic oil; a piston rod is arranged in the cylinder barrel, and the end of the piston rod is inserted into the hole, so that the piston rod with the same diameter on the pulley is driven by the hydraulic oil. Protrude from the cylinder in turn to form an integral torus, which can be used as the working surface of the pulley, thus completing the diameter expansion of the pulley; a spring is arranged between the cylinder and the piston rod, and the pressure of the hydraulic oil is relieved. In this state, the compressed spring pressure in the cylinder rebounds after release, and the piston rod is pulled out from the pulley hole and pushed back into the cylinder under the action of the spring, so that the working diameter of the pulley is reduced, so that the diameter of the pulley is reduced. The utility model realizes automatic multi-stage diameter reduction under different working conditions.

Description

Multi-stage automatic hydraulic column array variable diameter pulley

technical field

The utility model relates to a variable-diameter design for changing the diameter of pulleys in belt transmission, in particular to a multi-stage automatic hydraulic column array type variable-diameter pulley.

Background technique

At present, in practical engineering, belt transmission is a common and classic transmission mode. The pulleys in belt transmission are generally designed as a combined structure. The diameter of each pulley achieves a transmission ratio, so there are often several pulleys. The purpose of the wheel groove is to change the diameter of the pulley, and to achieve the transmission requirements of the machine under different working conditions by cooperating with different wheel grooves. If you need to adjust the transmission ratio when the pulley is working to adapt to different working conditions, you must first stop the working pulley, then remove the belt, and replace the corresponding belt on the corresponding transmission ratio groove, which reduces the working efficiency. It brings inconvenience to the operation of the machine, maintenance, and the management of operators. Design a kind of novel variable-diameter pulley for this reason, improve working efficiency, eliminate the danger in the work, very significant.

Contents of the invention

In order to overcome the above-mentioned defects in the prior art, the purpose of this utility model is to provide a multi-stage automatic hydraulic column array variable-diameter pulley, which is composed of a hydraulic thrust system and a variable-diameter pulley. Next, automatic multi-stage diameter reduction is realized.

In order to achieve the above object, the technical scheme of the utility model is:

Multi-stage automatic hydraulic column array variable diameter pulleys, including hydraulic backseat 1, hydraulic backseat 1 is equipped with hydraulic cylinder 4 arranged in array, hydraulic backseat 1 is connected to pulley 3 through sleeve 2, and the two pulleys of pulley 3 Holes 3A with array characteristics are respectively opened on the edge, and the hydraulic cylinder 4 includes a cylinder barrel 4A, an oil inlet 4A2 is arranged on the cylinder barrel 4A, a piston rod 4B is arranged in the cylinder barrel 4A, and the end of the piston rod 4B is inserted into the hole 3A; a spring 4C is provided between the cylinder 4A and the piston rod 4B.

There is an external thread 4A1 on the cylinder 4A, and the cylinder 4A is connected with the hydraulic backseat 1 through the external thread 4A1.

In the utility model, the piston rods 4B of the hydraulic cylinder 4 are arranged to form an annular surface as the working surface of each stage of the pulley; under different working conditions, automatic multi-stage diameter reduction is realized.

Description of drawings

Fig. 1 is a half-section front view of the overall assembly of the utility model.

Fig. 2 is a half-cut view of the general assembly drawing of the utility model.

Fig. 3 is a cross-sectional view of the hydraulic cylinder subassembly of the utility model.

specific implementation plan

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Figure 1, the multi-stage automatic hydraulic column array variable-diameter pulley includes a hydraulic backseat 1, on which a hydraulic cylinder 4 arranged in an array is arranged, and the hydraulic backseat 1 is connected to a pulley 3 through a sleeve 2, as shown in Fig. 2. The two rims of the pulley 3 are respectively provided with an array of characteristic holes 3A. Referring to FIG. 3, the hydraulic cylinder 4 includes a cylinder 4A, and the cylinder 4A is provided with an oil inlet 4A2 for entering and exiting hydraulic oil. The piston rod 4B is set in the cylinder 4A, and the end of the piston rod 4B is inserted in the hole 3A, so that the piston rod 4B of the same diameter on the pulley 3 protrudes from the cylinder 4A successively under the promotion of the hydraulic oil to form an integral The ring surface, which can be used as the working surface of the pulley, thus completes the diameter expansion of the pulley; a spring 4C is arranged between the cylinder 4A and the piston rod 4B, and in the state of hydraulic oil pressure relief, the cylinder 4 The compressed spring 4C rebounds after the pressure is released, and the piston rod 4B is pulled out from the pulley hole 3A and pushed back into the cylinder 4A under the action of the spring, so that the working diameter of the pulley is reduced, so that the diameter of the pulley is reduced.

Referring to FIG. 3 , there is an external thread 4A1 on the cylinder 4A, and the cylinder 4A is connected to the hydraulic backseat 1 through the external thread 4A1; the cylinder 4A is provided with an oil inlet 4A2 for entering hydraulic oil.

The working principle of the utility model is:

The cylinder 4A is provided with an oil inlet 4A2 for entering hydraulic oil; the sleeve 2 is used for positioning the hydraulic backseat 1 and the pulley 3; for the execution part, a piston rod 4B and a telescopic spring 4C are used to realize the piston rod. Action; the stroke of the execution part is determined according to the groove width of the pulley 3;

For diameter reduction, the end of the piston rod 4B is inserted into the hole 3A, so that the piston rod 4B of the same diameter on the pulley 3 protrudes from the cylinder 4A sequentially under the push of the hydraulic oil, and is inserted into the holes 3A arranged in an array on the pulley 3 , forming an integral torus, which can be used as the working surface of the pulley, thus completing the diameter expansion of the pulley; a spring 4C is arranged between the cylinder 4A and the piston rod 4B, and in the state of hydraulic oil pressure relief, The compressed spring 4C in the cylinder 4 rebounds after the pressure is released, and the piston rod 4B is pulled out from the pulley hole 3A and pushed back into the cylinder 4A under the action of the spring, so that the working diameter of the pulley is reduced, so that the pulley shrinks. path.

Claims (2)

1. multistage automatic liquid compression leg array reducing belt wheel, which is characterized in that including hydraulic pressure back seat (1), hydraulic pressure back seat is set on (1) The hydraulic cylinder (4) of array arrangement is equipped with, hydraulic pressure back seat (1) connects belt pulley (3), two wheels of belt pulley (3) by sleeve (2) The hole (3A) of array feature is offered on edge respectively, the hydraulic cylinder (4) includes cylinder barrel (4A), is provided on cylinder barrel (4A) Oil inlet (4A2), cylinder barrel (4A) is interior to set piston rod (4B), and piston rod (4B) end insertion hole (3A) is interior；Cylinder barrel (4A) with Spring (4C) is provided between piston rod (4B).

2. multistage automatic liquid compression leg array reducing belt wheel according to claim 1, which is characterized in that have on cylinder barrel (4A) External screw thread (4A1), cylinder barrel (4A) are connected with hydraulic pressure back seat (1) by external screw thread (4A1).