Isolating ring applied to hob of shield tunneling machine

Abstract

The utility model provides an isolating ring applied to a shield tunneling machine hob, which comprises a base body, the base body is in a circular ring shape, the outer circumferential surface of the base body sinks towards the inner circumferential surface of the base body to form a plurality of avoiding grooves, each avoiding groove is arranged on the outer circumferential surface of the base body in a surrounding manner, the plurality of avoiding grooves are distributed along the axial direction of the base body, and the distance between the avoiding grooves is larger than the distance between the base body and the inner circumferential surface of the base body. The device has the characteristic of improving the isolating ring assembling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating engineering elements, in particular to an isolating ring applied to a roller cutter of a shield machine. Background Art

[0002] At present, under different geological conditions, shield machine cutters require different starting torques, and the starting torque of the cutter is mainly achieved by adjusting the clearance size between the outer rings and inner ring cage rollers of the two sets of tapered roller bearings. Since the position of the outer ring of the bearing is fixed, the clearance size is mainly achieved by adjusting the thickness of the isolation ring between the inner rings of the two bearing cage rollers. As an important component of the cutter, the isolation ring is usually customized according to the starting torque set by the cutter and has a fixed thickness.

[0003] In the related art, when the hob uses different starting torques, it is necessary to first measure the actual torque, and then thicken or thin the isolation ring according to the measured torque. However, in the above-mentioned related art, the thickness of the isolation ring needs to be adjusted frequently during use, and each adjustment will produce precision errors, which requires repeated debugging, resulting in a long time for each isolation ring thickness adjustment. Therefore, there is a problem of low isolation ring assembly efficiency.

[0004] In view of this, it is indeed necessary to provide a technical solution for the isolation ring applied to the shield machine cutter to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a spacer ring applied to a shield machine cutter to solve the problem of low assembly efficiency of the spacer ring.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme for an isolation ring applied to a shield machine cutter:

[0007] A separation ring used for a shield machine cutter comprises a base body, which is in a circular ring shape. The outer circumference of the base body is recessed toward the inner circumference of the base body to form a plurality of avoidance grooves, each of which is arranged around the outer circumference of the base body, and the plurality of avoidance grooves are distributed along the axial direction of the base body.

[0008] As an optimization of an isolation ring applied to a shield machine cutter, the longitudinal section of the avoidance groove is semicircular.

[0009] As an optimization of an isolation ring applied to a shield machine cutter, a balancing groove is provided on the inner circumference of the base body, and the balancing groove is arranged around the inner circumference of the base body.

[0010] Compared with the prior art, the beneficial effect of the utility model is that when the thickness of the isolation ring needs to be adjusted, a plurality of avoidance grooves are opened on the outer circumferential surface of the isolation ring. The avoidance grooves allow the upper and lower ends of the outer circumferential surface of the isolation ring to have deformation space for squeezing toward the center of the avoidance grooves, so that the outer ring of the isolation ring has elasticity. Extruding the outer ring of the isolation ring can change the thickness of the outer ring of the isolation ring, and can dynamically adjust the clearance of the bearing, so as to adapt to the assembly requirements of different starting torques of the shield machine cutter, reduce the time for adjusting the thickness of the isolation ring, and improve the assembly efficiency of the isolation ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 This is a schematic diagram of the overall structure of an isolation ring applied to a shield machine cutter according to an embodiment of the present application;

[0013] Figure 2 This is a longitudinal cross-sectional view of an isolation ring used for a shield machine cutter according to an embodiment of the present application.

[0014] In the figure: 1. base; 2. avoidance groove; 3. balance groove. DETAILED DESCRIPTION

[0015] In order to make the technical solution and advantages of the utility model clearer, the utility model and its beneficial effects will be further described in detail below in conjunction with specific implementation methods and drawings of the specification, but the implementation methods of the utility model are not limited thereto.

[0016] The following is combined with Figure 1-2 , further details of this application are given.

[0017] The present application provides an isolation ring for a shield machine cutter, which adopts the following technical solution:

[0018] Reference Figure 1 and Figure 2The isolating ring includes a base 1, which is in a circular ring shape. The base 1 has a fixed thickness between the upper and lower end surfaces. The fixed thickness is configured according to the hob parameters of the shield machine. In this embodiment, the fixed thickness of the base 1 is 10 mm. The outer circumference of the base 1 is recessed to the inner circumference of the base 1 to form a plurality of avoidance grooves 2. The longitudinal section of the avoidance groove 2 can be a regular shape such as a rectangle or a V shape, or an irregular shape. The plurality of avoidance grooves 2 are distributed along the axial direction of the base 1. The number of avoidance grooves 2 is configured according to the thickness adjustment range of the base 1 and the width of the notch of the avoidance groove 2 according to the assembly requirements. Specifically, in this embodiment, the notch of the avoidance groove 2 is set to 2 mm. If the thickness adjustment range of the base 1 is 6 mm-14 mm according to the assembly requirements, the number of the avoidance grooves 2 is set to 2, which can meet the assembly requirements in this embodiment. The avoidance groove 2 is an annular groove. The avoidance groove 2 surrounds the outer circumference of the base 1. The avoidance groove 2 forms a deformation space in the outer ring of the base 1, so that the isolating ring has elasticity. When the upper and lower end faces of the base 1 are close to each other, the space of the avoidance groove 2 is squeezed and the outer ring thickness of the base 1 is reduced. When the upper and lower end faces of the base 1 are away from each other, the space of the avoidance groove 2 is stretched and the outer ring thickness of the base 1 is increased, thereby dynamically adjusting the thickness of the isolation ring. During the bearing assembly process, the bearing clearance can be dynamically adjusted so that the hob can reach our ideal starting torque, thereby being able to adapt to the assembly requirements of different starting torques of the shield machine hob and improve assembly efficiency.

[0019] In the preferred embodiment of the present application, refer to Figure 2 The longitudinal section of the avoidance groove 2 is semicircular, and the bottom of the avoidance groove 2 is a smooth arc. The bending stress generated by the outer ring of the base 1 during the deformation process is evenly dispersed along the arc of the groove bottom, avoiding the bending stress from being concentrated at one point, reducing the generation of cracks, and thus improving the service life of the isolation ring.

[0020] Further, refer to Figure 1 and Figure 2 The inner circumference of the substrate 1 is provided with a balancing groove 3, which is an annular groove and surrounds the inner circumference of the substrate 1. The balancing groove 3 is located at the center of the inner circumference of the substrate 1, and the inner walls on both sides of the balancing groove 3 are symmetrical about the center line of the inner circumference of the substrate 1. The balancing groove 3 forms a deformation space in the inner ring of the substrate 1. When the thickness of the substrate 1 needs to be adjusted, the stress generated by the deformation of the outer ring of the substrate 1 is transmitted to the balancing groove 3 through the substrate 1, driving the inner ring of the substrate 1 to deform to match the outer ring of the substrate 1, so that the stress of the outer ring of the substrate 1 is balanced, reducing the generation of cracks in the substrate 1, which is beneficial to improving the elastic performance of the isolation ring, thereby increasing the service life of the isolation ring.

[0021] Experimental principle of the embodiment of this application:

[0022] When the thickness of the isolation ring needs to be adjusted, a plurality of avoidance grooves 2 are opened on the outer circumference of the isolation ring to increase deformation space on the outer ring of the isolation ring so that the outer ring of the isolation ring has the ability to deform, thereby changing the thickness of the isolation ring; a balancing groove 3 is opened on the inner circumference of the isolation ring to increase deformation space on the inner ring of the isolation ring so that the inner ring of the isolation ring has the ability to deform, which matches the deformation of the outer ring of the isolation ring and improves the elasticity of the isolation ring; by adjusting the thickness of the isolation ring, the clearance of the bearing can be dynamically adjusted to adapt to the assembly requirements of different starting torques of the shield machine cutter and improve the assembly efficiency of the isolation ring.

[0023] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. An isolation ring used for a shield machine cutter, characterized in that: It includes a base body, which is in a ring shape. The outer circumference of the base body is recessed toward the inner circumference of the base body to form a plurality of avoidance grooves. Each of the avoidance grooves is arranged around the outer circumference of the base body, and the plurality of avoidance grooves are distributed along the axial direction of the base body.

2. The isolating ring used for a shield machine cutter according to claim 1, characterized in that: The longitudinal section of the avoidance groove is semicircular.

3. The isolating ring used for a shield machine cutter according to claim 1 or 2, characterized in that: The inner circumference of the base body is provided with a balancing groove, and the balancing groove is arranged around the inner circumference of the base body.

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