A shield machine cutter ring adaptable to hard rock formations

Abstract

The utility model relates to the technical field of shield machine tools, and specifically to a shield machine cutter ring that can adapt to hard rock formations, comprising a ring body, a plurality of carbide columns and a buffer component, wherein the buffer component comprises a moving plate, a buffer plate, a hydraulic spring, a damper, a mounting column, a scraper ring, a base and a mounting plate. When the carbide column contacts a harder rock, the carbide column will push the mounting plate to move downward in a first circular hole, so that the mounting column squeezes the hydraulic spring below the moving plate. When the carbide column leaves the harder rock, the spring force of the hydraulic spring will drive the moving plate to rebound upward until it contacts the buffer plate, thereby restoring the carbide column to a state before use. The scraper ring can reduce impurities from entering the second circular hole, so that the carbide column can be prevented from being hard squeezed with the harder rock in this way, thereby reducing wear on the carbide column and extending the service life of the carbide column.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine cutters, in particular to a shield machine cutter ring which can adapt to hard rock layers. Background Art

[0002] With the rapid development of my country's infrastructure, shield machines, as a special engineering machinery for tunnel excavation, have been widely used in subway, railway, highway, municipal, hydropower and other tunnel projects. The basic working principle of the shield machine is that a cylindrical steel component is pushed forward along the axis of the tunnel through the cutter head set at the front end of the shield machine to excavate the soil. The shell of the cylindrical component is the shield, which plays a temporary support role for the excavated tunnel section that has not been lined yet, bears the pressure of the surrounding soil layer, and sometimes also bears the groundwater pressure and keeps the groundwater out. Excavation, soil discharge, lining and other operations are carried out under the cover of the shield.

[0003] In the prior art, a patent application with publication number CN209261571U discloses a shield machine cutter ring that can adapt to hard rock formations, including a ring body and a plurality of carbide columns. The plurality of carbide columns are arranged on the outer wall of the ring body. When in use, the ring body is first installed on the shield machine, and the shield machine is turned on to make the carbide columns contact with the crushed rock, thereby obtaining a better crushing effect.

[0004] However, in the above-mentioned prior art, the cemented carbide column will be hard squeezed when it contacts the harder rock, which is easy to cause wear to the cemented carbide column and affect the service life of the cemented carbide column. Utility Model Content

[0005] The purpose of the utility model is to provide a shield machine cutter ring that can adapt to hard rock formations, aiming to solve the problem in the prior art that hard alloy columns will be hard squeezed when contacting harder rocks, which easily causes wear to the hard alloy columns and affects the service life of the hard alloy columns.

[0006] To achieve the above-mentioned purpose, the utility model provides a shield machine cutter ring that can adapt to hard rock formations, including a ring body, a plurality of carbide columns and a buffer assembly, the buffer assembly including a movable plate, a buffer plate, a hydraulic spring, a damper, a mounting column, a scraper ring, a base and a mounting plate, the plurality of carbide columns are all arranged on the outer wall of the ring body, the ring body has a first circular hole, the first circular hole is slidably matched with the mounting plate, the ring body has a second circular hole, the second circular hole is slidably matched with the movable plate, the ring body has a sliding hole, the sliding hole is adapted to the scraper ring, and the sliding hole is respectively connected to the first circular hole and the second circular hole, the scraper ring is fixedly connected to the ring body and is located on the inner wall of the sliding hole, the mounting column is slidably connected to the scraper ring and is located The inner wall of the scraper ring, the base is fixedly connected to the movable plate and is located below the movable plate, the damper is fixedly connected to the ring body and is located on the inner bottom wall of the second circular hole, one end of the hydraulic spring is fixedly connected to the base and is located below the base, the other end of the hydraulic spring is fixedly connected to the damper and is located on the outer side wall of the damper, one end of the mounting column is fixedly connected to the movable plate and is located above the movable plate, the other end of the mounting column is fixedly connected to the mounting plate and is located below the mounting plate, the buffer plate is fixedly connected to the ring body and is located on the inner top wall of the second circular hole, and the buffer plate is slidably matched with the mounting column, and the carbide column is arranged above the mounting column.

[0007] Wherein, the buffer assembly also includes a reinforcing rib, one end of which is fixedly connected to the base and located on the outer side wall of the base, and the other end of which is fixedly connected to the movable plate and located below the movable plate.

[0008] Wherein, the shield machine cutter ring that can adapt to hard rock formations also includes a mounting assembly, and the mounting assembly is arranged above the mounting plate.

[0009] Wherein, the mounting assembly includes a pressure ring and a fastening bolt. The pressure ring is detachably connected to the carbide column and is located on the outer side wall of the carbide column. The pressure ring and the mounting plate both have threaded holes, and the threaded holes are threadedly matched with the fastening bolts.

[0010] Wherein, the shield machine cutter ring that can adapt to hard rock formations also includes a protection component, and the protection component is arranged above the mounting plate.

[0011] Wherein, the protection component includes a top cover and a connecting ring, the top cover is threadedly connected to the ring body and is located on the inner wall of the first circular hole, the connecting ring is fixedly connected to the top cover and is located on the inner wall of the top cover, and the connecting ring is slidably matched with the cemented carbide column.

[0012] The utility model discloses a shield machine cutter ring that can adapt to hard rock formations. When the carbide column contacts the harder rock, the carbide column will push the mounting plate to move downward in the first circular hole, so that the mounting column squeezes the hydraulic spring under the moving plate. When the carbide column leaves the harder rock, the moving plate will be driven to rebound upward due to the spring force of the hydraulic spring until it contacts the buffer plate, thereby restoring the carbide column to the state before use. The scraper ring can reduce the entry of impurities into the second circular hole. In this way, the carbide column can be prevented from being hard squeezed with the harder rock, the wear on the carbide column is reduced, and the service life of the carbide column is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0015] Figure 2 It is an overall right side view of the first embodiment of the utility model.

[0016] Figure 3 The utility model Figure 2 AA line section view.

[0017] Figure 4 The utility model Figure 3 Enlarged view of the local structure at point B.

[0018] Figure 5 It is an overall structural diagram of the second embodiment of the utility model.

[0019] Figure 6 It is an overall right side view of the second embodiment of the utility model.

[0020] 101-ring body, 102-carbide column, 103-buffer assembly, 104-mounting assembly, 105-movable plate, 106-buffer plate, 107-hydraulic spring, 108-damper, 109-mounting column, 110-scraper ring, 111-base, 112-mounting plate, 113-reinforcement rib, 114-pressure ring, 115-fastening bolt, 116-first circular hole, 117-second circular hole, 118-sliding hole, 119-threaded hole, 201-protection assembly, 202-top cover, 203-connecting ring. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0022] First embodiment:

[0023] See also Figures 1 to 4 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is the overall right side view of the first embodiment of the utility model. Figure 3 The utility model Figure 2 AA line section view, Figure 4 The utility model Figure 3 Enlarged view of the local structure at point B.

[0024] The utility model provides a shield machine cutter ring that can adapt to hard rock formations, including a ring body 101, a plurality of carbide columns 102, a buffer assembly 103 and a mounting assembly 104, wherein the buffer assembly 103 includes a moving plate 105, a buffer plate 106, a hydraulic spring 107, a damper 108, a mounting column 109, a scraper ring 110, a base 111, a mounting plate 112 and a reinforcing rib 113, the mounting assembly 104 includes a pressure ring 114 and a fastening bolt 115, the ring body 101 has a first circular hole 116, the ring body 101 has a second circular hole 117, the ring body 101 has a sliding hole 118, and the pressure ring 114 and the mounting plate 112 both have threaded holes 119.

[0025] According to this specific embodiment, the plurality of cemented carbide columns 102 are arranged on the outer wall of the ring body 101, and the buffer assembly 103 is added to avoid hard squeezing of the cemented carbide columns 102 with harder rocks, reduce wear on the cemented carbide columns 102, and extend the service life of the cemented carbide columns 102.

[0026] The ring body 101 has a first circular hole 116, and the first circular hole 116 is slidably matched with the mounting plate 112. The ring body 101 has a second circular hole 117, and the second circular hole 117 is slidably matched with the movable plate 105. The ring body 101 has a sliding hole 118, and the sliding hole 118 is adapted to the scraper ring 110, and the sliding hole 118 is respectively connected to the first circular hole 116 and the second circular hole 117. The scraper ring 110 is fixedly connected to the ring body 101 and is located on the inner side wall of the sliding hole 118. The mounting column 109 is slidably connected to the scraper ring 110. , and is located on the inner side wall of the scraper ring 110, the base 111 is fixedly connected to the movable plate 105 and is located below the movable plate 105, the damper 108 is fixedly connected to the ring body 101 and is located on the inner bottom wall of the second circular hole 117, one end of the hydraulic spring 107 is fixedly connected to the base 111 and is located below the base 111, the other end of the hydraulic spring 107 is fixedly connected to the damper 108 and is located on the outer side wall of the damper 108, one end of the mounting column 109 is fixedly connected to the movable plate 105 and is located on the movable plate 105, the other end of the mounting post 109 is fixedly connected to the mounting plate 112 and is located below the mounting plate 112, the buffer plate 106 is fixedly connected to the ring body 101 and is located on the inner top wall of the second circular hole 117, and the buffer plate 106 is slidably matched with the mounting post 109, and the carbide column 102 is arranged above the mounting post 109. When the carbide column 102 contacts the harder rock, the carbide column 102 will push the mounting plate 112 to move downward in the first circular hole 116, so that the mounting post 109 squeezes the The hydraulic spring 107 under the movable plate 105, when the cemented carbide column 102 leaves the harder rock, the spring force of the hydraulic spring 107 will drive the movable plate 105 to rebound upward until it contacts the buffer plate 106, thereby restoring the cemented carbide column 102 to the state before use. The scraper ring 110 can reduce the entry of impurities into the second circular hole 117. In this way, the hard extrusion between the cemented carbide column 102 and the harder rock can be avoided, the wear on the cemented carbide column 102 can be reduced, and the service life of the cemented carbide column 102 can be extended.

[0027] Secondly, one end of the reinforcing rib 113 is fixedly connected to the base 111 and is located on the outer wall of the base 111, and the other end of the reinforcing rib 113 is fixedly connected to the movable plate 105 and is located below the movable plate 105. The reinforcing rib 113 can improve the connectivity between the base 111 and the movable plate 105, share the pressure borne by the movable plate 105, and extend the service life of the movable plate 105.

[0028] Meanwhile, the mounting assembly 104 is disposed above the mounting plate 112 . The mounting assembly 104 is added to facilitate the staff to install and disassemble the carbide column 102 , thereby improving the practicality and convenience of the ring body 101 .

[0029] In addition, the pressure ring 114 is detachably connected to the cemented carbide column 102 and is located on the outer wall of the cemented carbide column 102. The pressure ring 114 and the mounting plate 112 both have a threaded hole 119, and the threaded hole 119 is threadedly matched with the fastening bolt 115. The cemented carbide column 102 is placed on the mounting plate 112, and the fastening bolt 115 is tightened to make the pressure ring 114 resist against the cemented carbide column 102. This method is used to facilitate the staff to install and disassemble the cemented carbide column 102, thereby improving the practicality and convenience of the ring body 101.

[0030] When using the shield machine cutter ring that can adapt to hard rock formations of the utility model, when the cemented carbide column 102 contacts harder rock, the cemented carbide column 102 will push the mounting plate 112 to move downward in the first circular hole 116, so that the mounting column 109 squeezes the hydraulic spring 107 under the moving plate 105. When the cemented carbide column 102 leaves the harder rock, the spring force of the hydraulic spring 107 will drive the moving plate 105 to rebound upward until it contacts the buffer plate 106, so that the cemented carbide column 102 is restored to the state before use. The scraper ring 110 can reduce the entry of impurities into the second circular hole 117. The reinforcement The rib 113 can improve the connectivity between the base 111 and the movable plate 105, share the pressure on the movable plate 105, and extend the service life of the movable plate 105. The carbide column 102 is placed on the mounting plate 112, and the fastening bolts 115 are tightened to make the pressure ring 114 resist the carbide column 102. This method is used to facilitate the staff to install and disassemble the carbide column 102, improve the practicality and convenience of the ring body 101, and avoid the hard extrusion of the carbide column 102 with harder rocks in this way, reduce the wear on the carbide column 102, and extend the service life of the carbide column 102.

[0031] Second embodiment:

[0032] Based on the first embodiment, please refer to Figure 5 and Figure 6 ,in, Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the utility model. Figure 6 It is an overall right side view of the second embodiment of the utility model.

[0033] The utility model provides a shield machine cutter ring that can adapt to hard rock layers, and also includes a protection component 201. The protection component 201 includes a top cover 202 and a connecting ring 203.

[0034] According to this specific embodiment, the protection component 201 is arranged above the mounting plate 112. The protection component 201 is added to prevent the first circular hole 116 from being blocked, ensure that the staff can disassemble the carbide column 102 normally, and effectively reduce the workload of the staff.

[0035] Among them, the top cover 202 is threadedly connected to the ring body 101 and is located on the inner wall of the first circular hole 116, the connecting ring 203 is fixedly connected to the top cover 202 and is located on the inner wall of the top cover 202, and the connecting ring 203 is slidably matched with the carbide column 102. The cooperation between the top cover 202 and the connecting ring 203 avoids the blockage of the first circular hole 116, ensures that the staff can disassemble the carbide column 102 normally, and effectively reduces the workload of the staff.

[0036] When using a shield machine cutter ring that can adapt to hard rock formations according to the utility model, the top cover 202 and the connecting ring 203 cooperate to avoid blockage of the first circular hole 116, ensure that the staff can disassemble the carbide column 102 normally, and effectively reduce the workload of the staff.

[0037] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A shield machine cutter ring that can adapt to hard rock formations, comprising a ring body and a plurality of cemented carbide columns, wherein the plurality of cemented carbide columns are arranged on the outer side wall of the ring body, characterized in that: Also included is a cushioning component; The buffer assembly includes a movable plate, a buffer plate, a hydraulic spring, a damper, a mounting column, a scraper ring, a base and a mounting plate. The ring body has a first circular hole, which is slidably matched with the mounting plate. The ring body has a second circular hole, which is slidably matched with the movable plate. The ring body has a sliding hole, which is adapted to the scraper ring, and the sliding hole is respectively connected to the first circular hole and the second circular hole. The scraper ring is fixedly connected to the ring body and is located on the inner side wall of the sliding hole. The mounting column is slidably connected to the scraper ring and is located on the inner side wall of the scraper ring. The base is fixedly connected to the movable plate and is located below the movable plate. The damper is fixedly connected to the ring body and is located on the inner bottom wall of the second circular hole. One end of the hydraulic spring is fixedly connected to the base and is located below the base. The other end of the hydraulic spring is fixedly connected to the damper and is located on the outer side wall of the damper. One end of the mounting column is fixedly connected to the movable plate and is located above the movable plate. The other end of the mounting column is fixedly connected to the mounting plate and is located below the mounting plate. The buffer plate is fixedly connected to the ring body and is located on the inner top wall of the second circular hole. The buffer plate is slidably matched with the mounting column. The carbide column is arranged above the mounting column.

2. The shield machine cutter ring that can adapt to hard rock formations as claimed in claim 1 is characterized in that: The buffer assembly also includes a reinforcing rib, one end of which is fixedly connected to the base and located on the outer side wall of the base, and the other end of which is fixedly connected to the movable plate and located below the movable plate.

3. The shield machine cutter ring adaptable to hard rock formations as claimed in claim 2, characterized in that: The shield machine cutter ring that can adapt to hard rock formations also includes a mounting assembly, and the mounting assembly is arranged above the mounting plate.

4. The shield machine cutter ring adaptable to hard rock formations as claimed in claim 3, characterized in that: The mounting assembly includes a pressure ring and a fastening bolt. The pressure ring is detachably connected to the cemented carbide column and is located on the outer side wall of the cemented carbide column. The pressure ring and the mounting plate both have threaded holes, and the threaded holes are threadedly matched with the fastening bolt.

5. The shield machine cutter ring adaptable to hard rock formations as claimed in claim 4, characterized in that: The shield machine cutter ring that can adapt to hard rock formations also includes a protection component, which is arranged above the mounting plate.

6. The shield machine cutter ring adaptable to hard rock formations as claimed in claim 5, characterized in that: The protection component includes a top cover and a connecting ring. The top cover is threadedly connected to the ring body and is located on the inner side wall of the first circular hole. The connecting ring is fixedly connected to the top cover and is located on the inner side wall of the top cover. The connecting ring is slidably matched with the cemented carbide column.

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