Cutter protection structure with replaceable spiral blade

Abstract

The utility model relates to the technical field of shield tunneling machines, in particular to a protective cutter structure with a replaceable spiral blade, which comprises the spiral blade, a plurality of protective cutters and a plurality of fixing bolts, a plurality of clamping grooves are arranged at the edge of the spiral blade, and the protective cutters are mounted in the clamping grooves at the edge of the spiral blade through the fixing bolts. Due to the fact that the protection cutters are made of the abrasion-resistant materials, and the shapes of the protection cutters are attached to the spiral blades, when the spiral conveyor operates, the outer side walls of the protection cutters and the barrel of the spiral conveyor are abraded, abrasion to the edges of the spiral blades is reduced, and when one or more protection cutters are abraded to a certain degree, the protection cutters are prevented from being damaged. When the spiral blade is abraded, the fixing bolt can be detached, the abraded protection cutter can be replaced, and by the adoption of the structure, the service life of the spiral blade is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a replaceable protective cutter structure for spiral blades. Background Art

[0002] A shield machine is a special construction machinery for tunnel boring. The muck generated by the shield machine during tunneling is conveyed out by a screw conveyor. The muck excavated from the face is conveyed to a belt conveyor by the screw conveyor, transported to a muck truck by the belt conveyor, and then hoisted to the ground, thus completing the tunneling of the tunnel.

[0003] However, when the existing screw conveyor is used for a long time during construction or when dealing with relatively hard muck, the blades are easily worn or damaged, resulting in a decline in the slag discharge performance, and even causing the screw shaft to break, increasing the maintenance cost and time. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a replaceable protective cutter structure for spiral blades, so as to solve the problems that when the existing screw conveyor is used for a long time during construction or when dealing with relatively hard muck, the blades are easily worn or damaged, resulting in a decline in the slag discharge performance, and even causing the screw shaft to break, increasing the maintenance cost and time.

[0005] To achieve the above purpose, the utility model provides a replaceable protective cutter structure for spiral blades. The replaceable protective cutter structure for spiral blades includes spiral blades, a plurality of protective cutters and a plurality of fixing bolts. A plurality of card slots are arranged at the edge of the spiral blades. Each of the protective cutters is arranged at each of the card slots. Each of the protective cutters is fixed in the corresponding card slot by two of the fixing bolts. The protective cutters are made of wear-resistant materials.

[0006] Wherein, each of the card slots is arranged in a dovetail groove structure, each of the protective cutters is arranged in a trapezoidal structure, and the protective cutters are adapted to the dovetail grooves.

[0007] Wherein, mounting holes are arranged on both sides of each of the protective cutters on the side away from the spiral blades. Threaded holes are arranged at the bottoms of each of the mounting holes. The fixing bolts are installed inside the mounting holes, and the nuts of the fixing bolts are attached to the inner bottoms of the mounting holes.

[0008] Wherein, one end of each of the protective cutters away from the spiral blades extends to the outside of the card slots.

[0009] Wherein, anti-slip pads are arranged on both sides of each of the protective cutters, and both sides of the anti-slip pads are attached to the side walls of the corresponding card slots.

[0010] Wherein, a through groove is provided at one end of each of the protective cutters away from the spiral blade, the through groove penetrates the mounting hole, and a sealing plate is embedded in the through groove.

[0011] A replaceable protective cutter structure for a spiral blade of the present utility model includes a spiral blade, a plurality of protective cutters, and a plurality of fixing bolts. A plurality of clamping grooves are provided at the edge of the spiral blade, and the protective cutters are installed in the clamping grooves at the edge of the spiral blade through the fixing bolts. Since the protective cutters are made of wear-resistant materials and the shape of the protective cutters fits the spiral blade, when the screw conveyor is running, the outer side wall of the protective cutter wears against the cylinder body of the screw conveyor, thereby reducing the wear on the edge of the spiral blade. And when one or more of the protective cutters are worn to a certain extent, the fixing bolts can be removed to replace the worn protective cutters. With the above structure, the service life of the spiral blade is prolonged, the maintenance cost is reduced, and at the same time, the wear resistance and the ability to disperse impact force of the spiral blade are improved, making the screw conveyor more stable and efficient during the process of transporting muck. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the replaceable protective cutter structure for the spiral blade provided by the present utility model.

[0014] Figure 2 It is an external structural schematic diagram of the protective cutter provided by the present utility model.

[0015] Figure 3 It is a cross-sectional view of the internal structure of the protective cutter provided by the present utility model.

[0016] 101 - Spiral blade, 102 - Protective cutter, 103 - Fixing bolt, 104 - Clamping groove, 105 - Mounting hole, 106 - Threaded hole, 107 - Anti-slip pad, 108 - Through groove, 109 - Sealing plate. Detailed Embodiments

[0017] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0018] Please refer to Figures 1 to 3 , the present utility model provides a replaceable protective tool structure for a spiral blade. The replaceable protective tool structure for a spiral blade includes a spiral blade 101, a plurality of protective tools 102, and a plurality of fixing bolts 103. A plurality of card slots 104 are provided at the edge of the spiral blade 101. Each of the protective tools 102 is provided at each of the card slots 104. Each of the protective tools 102 is fixed in the corresponding card slot 104 by two of the fixing bolts 103. The protective tool 102 is made of wear-resistant material.

[0019] In this embodiment, the protective tool 102 is installed in the card slot 104 at the edge of the spiral blade 101 through the fixing bolt 103. Since the protective tool 102 is made of wear-resistant material and the shape of the protective tool 102 fits the spiral blade 101, when the screw conveyor is running, the outer side wall of the protective tool 102 wears against the barrel of the screw conveyor, thereby reducing the wear on the edge of the spiral blade 101. And when one or more of the protective tools 102 are worn to a certain extent, the fixing bolt 103 can be removed to replace the worn protective tool 102. With the above structure, the service life of the spiral blade 101 is extended, the maintenance cost is reduced, and at the same time, the wear resistance and the ability to disperse impact force of the spiral blade 101 are improved, making the screw conveyor more stable and efficient during the process of transporting muck.

[0020] Furthermore, each of the card slots 104 is provided with a dovetail groove structure, each of the protective tools 102 is provided with a trapezoidal structure, and the protective tool 102 is adapted to the dovetail groove.

[0021] In this embodiment, since the card slot 104 is provided with a dovetail groove structure and the protective tool 102 is provided with a trapezoidal structure, the protective tool 102 is more firmly clamped into the card slot 104.

[0022] Furthermore, on both sides of one side of each of the protective tools 102 away from the spiral blade 101, mounting holes 105 are provided. Threaded holes 106 are provided at the bottom of each of the mounting holes 105. The fixing bolt 103 is installed inside the mounting hole 105, and the nut of the fixing bolt 103 is in contact with the inner bottom of the mounting hole 105.

[0023] In this embodiment, when the protective cutter 102 is fixed by the fixing bolt 103, the nut of the fixing bolt 103 is located inside the mounting hole 105, thereby preventing the nut of the fixing bolt 103 from wearing against the barrel of the screw conveyor and affecting the subsequent removal of the fixing bolt 103.

[0024] Furthermore, one end of each protective cutter 102 away from the spiral blade 101 extends outside the card slot 104.

[0025] In this embodiment, since one end of each protective cutter 102 away from the spiral blade 101 extends outside the card slot 104, during the rotation of the spiral blade 101, the outside of the protective cutter 102 wears against the inner side wall of the barrel of the screw conveyor frame.

[0026] Furthermore, anti-slip pads 107 are provided on both sides of each protective cutter 102, and both sides of the anti-slip pads 107 are in contact with the side walls of the corresponding card slots 104.

[0027] In this embodiment, through the arrangement of the anti-slip pads 107, the protective cutter 102 is more firmly clamped into the card slot 104.

[0028] Furthermore, a through groove 108 is provided through one end of each protective cutter 102 away from the spiral blade 101, the through groove 108 penetrates the mounting hole 105, and a sealing plate 109 is embedded inside the through groove 108.

[0029] In this embodiment, after the protective cutter 102 is fixed in the card slot 104 by the fixing bolt 103, the nut of the fixing bolt 103 is located inside the mounting hole 105. The sealing plate 109 is embedded into the through groove 108, and the nut of the fixing bolt 103 is shielded by the sealing plate 109 to prevent the outside environment from corroding the nut of the fixing bolt 103, which may cause inconvenience in removing the fixing bolt 103 from the card slot 104 when the protective cutter 102 is subsequently disassembled.

[0030] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of the rights of the present utility model. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A spiral blade replaceable protective tool structure, characterized in that: It includes a spiral blade, multiple protective tools and multiple fixing bolts. Multiple slots are arranged at the edge of the spiral blade. Each of the slots is provided with the protective tool. Each of the protective tools is fixed in the corresponding slot by two fixing bolts. The protective tools are made of wear-resistant material.

2. The spiral blade replaceable protective tool structure according to claim 1, characterized in that: Each of the clamping slots is arranged in a dovetail groove structure, each of the protective cutters is arranged in a trapezoidal structure, and the protective cutters are adapted to the dovetail grooves.

3. The spiral blade replaceable protective tool structure according to claim 2, characterized in that: Each of the protective tools is provided with mounting holes on both sides of a side away from the spiral blade, and a threaded hole is provided at the bottom of each mounting hole. The fixing bolt is installed inside the mounting hole, and the nut of the fixing bolt fits with the inner bottom of the mounting hole.

4. The spiral blade replaceable protective tool structure according to claim 3, characterized in that: One end of each of the protective cutters away from the spiral blade extends to the outside of the slot.

5. The spiral blade replaceable protective tool structure according to claim 4, characterized in that: Anti-skid pads are arranged on both sides of each of the protective knives, and both sides of the anti-skid pads are in contact with the side walls of the corresponding slots.

6. The spiral blade replaceable protective tool structure according to claim 5, characterized in that: A through slot is provided through one end of each of the protective cutters away from the spiral blade. The through slot passes through the mounting hole, and a sealing plate is embedded in the interior of the through slot.

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