CN116337422B - Efficient shield constructs quick-witted cutter wearing and tearing detection device - Google Patents
Efficient shield constructs quick-witted cutter wearing and tearing detection deviceInfo
- Publication number
- CN116337422B CN116337422B CN202310143776.8A CN202310143776A CN116337422B CN 116337422 B CN116337422 B CN 116337422B CN 202310143776 A CN202310143776 A CN 202310143776A CN 116337422 B CN116337422 B CN 116337422B
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- block
- rack
- plate
- support plate
- horizontal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a high-efficiency shield machine cutter abrasion detection device which comprises a support and a support plate, wherein one side, opposite to the two supports, is provided with the support plate, the top surface of the support plate is provided with a horizontal movement device, one side is provided with a movable rack, the horizontal movement device is provided with a swinging device, the swinging device is provided with a detection probe, the lower surface of the support plate is connected with a vertical movement device, a clamping rack is arranged on the support, which is close to one side of the vertical movement device, the clamping rack and the movable rack are positioned in the same vertical plane, a hydraulic rod is arranged on the support, which is far away from one end of the clamping rack, and the output end of the hydraulic rod is connected with the lower surface of the support plate.
Description
Technical Field
The invention relates to the technical field of shield machine cutter abrasion detection, in particular to a high-efficiency shield machine cutter abrasion detection device.
Background
The cutter head of the shield machine is provided with a cutter which is a core component for realizing rock breaking and tunneling of the shield machine. Because of complex and severe construction environment and long-time working under low-speed, heavy-load and dynamic variable working conditions, excessive abrasion and abnormal damage of the cutter become the most main reasons of the fault shutdown of the shield machine, and are also one of the most main problems of safe and efficient tunneling of the shield.
The existing cutter head detection device of the shield machine has the advantages of capability of horizontally moving and detecting, solves the problem that an original cutter wear detection device cannot move and is inconvenient to detect, but can only horizontally move and detect after being installed and fixed, cannot move fully in multiple directions to detect cutters at different positions, and has the advantages that due to inconsistent abrasion quantity of the cutter in the shield construction process and due to reasons of geology and the like, the condition that a cutter excavation plane and a rock face are not fit easily occurs after the cutter with abrasion reaching a control value is replaced by a new cutter, so that the newly replaced cutter is stressed greatly, the abrasion rate is high, and the service life of the cutter is short.
Accordingly, improvements are made to the above problems.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide the efficient shield tunneling machine cutter abrasion detection device, and the problem that the existing device can only horizontally move for detection and cannot detect cutters at different positions in multiple directions, and the situation that a hob excavates a plane and a rock surface is not fit, so that a newly replaced hob is larger in stress, high in abrasion rate and short in service life is solved through the design that the ball screw drives the detection device to vertically move.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides an efficient shield constructs quick-witted cutter wear detection device, includes support and backup pad, the support is provided with two, and spout one has been seted up to the symmetry of one side that two supports are relative, slides in the spout one and is provided with the backup pad, the backup pad top surface is provided with horizontal migration device, and one side is provided with the removal rack, is provided with pendulous device on the horizontal migration device, and is provided with detecting probe on the pendulous device, the backup pad lower surface is connected with vertical mobile device, installs the block rack on the support that is close to vertical mobile device one side, and the block rack is in same vertical face with the removal rack, is provided with the hydraulic stem on the support of keeping away from block rack one end, and the output and the backup pad lower surface of hydraulic stem link to each other, wherein horizontal migration device, pendulous device and vertical mobile device mutually support adjustment detecting probe position.
According to the invention, a first horizontal slideway is arranged on the top surface of the supporting plate, a horizontal moving device is arranged in the first horizontal slideway in a sliding manner, a second horizontal slideway is arranged at one end of the supporting plate, a sliding block is arranged in the second horizontal slideway, a magnet block is arranged at one end, close to the sliding block, of the supporting plate, the top of the sliding block is connected with a clamping block, and the clamping block can be horizontally clamped on a clamping rack.
As a further scheme of the invention, the sliding block is a magnetic plate, corresponds to the magnet block and receives repulsive force.
As a further scheme of the invention, the horizontal moving device comprises a sliding plate, the sliding plate is arranged in a horizontal slideway I of the supporting plate in a sliding way, a motor is arranged on the sliding plate, the output end of the motor is connected with a gear, the gear is meshed with a moving rack positioned below the gear, and one end of the sliding plate is connected with a columnar bulge.
As a further scheme of the invention, the swinging device comprises a bidirectional motor and a one-way bearing, wherein the bidirectional motor is fixed at the top of the sliding plate, the output shafts at the upper end and the lower end of the bidirectional motor are respectively connected with the one-way bearing, the upper one-way bearing is connected with a ball screw, a moving block is nested on the ball screw, a clamping block is sleeved outside the moving block, a cylindrical block is connected with the lower one-way bearing, a rotary column body is rotatably arranged on the cylindrical block, one end of the rotary column body is provided with a balancing weight, the other end of the rotary column body is provided with a detection probe, one end of the regulation mechanism is connected with a rope, and the other end of the rope is connected with the balancing weight.
As a further scheme of the invention, the adjusting mechanism comprises a vertical positioning block which is sleeved on the outer surface of the bidirectional motor, a slide way is arranged in the vertical positioning block, a rotating block is arranged in the slide way, one end of the vertical positioning block is connected with a fixing rod, and the other end of the fixing rod is fixedly connected with a clamping block.
As a further scheme of the invention, the vertical moving device comprises a slideway plate, wherein the slideway plate is vertically arranged on the lower surface of the supporting plate, a connecting plate is arranged on the slideway plate in a sliding way, one end of the connecting plate is connected with a cylindrical supporting block, the other end of the connecting plate is connected with a swinging rack, a positioning block is arranged on the cylindrical supporting block, one end of the slideway plate is provided with an elastic telescopic rod, and the output end of the elastic telescopic rod is connected with the connecting plate.
As a further scheme of the invention, the side end of the swing rack is attached to the side end of the movable rack.
The invention has the beneficial effects that:
The motor driving gear moves on the movable rack and can be separated from the arrangement that the swing rack is meshed with the clamping rack, so that when the motor driving gear moves on the movable rack, the horizontal position of the detection probe can be adjusted, when the gear is meshed with the clamping rack, the gear moves up and down on the clamping rack under the limit of the rotary cylinder, the integral height of the detection probe can be controlled, the changing direction of the position of the detection probe can be changed by changing the type of the clamping rack of the gear, and the position change of the detection probe can be driven by only one motor.
The bidirectional motor has the advantages that the output shafts of the bidirectional motor rotate in different directions to respectively control the arrangement of the ball screw and the rotation cylinder, the driving shaft at the upper end of the bidirectional motor rotates to drive the moving block to move up and down, the rotation cylinder can be controlled to swing up and down to adjust the height and the orientation of the detection probe, accurate data can be obtained by adjusting the orientation of the detection probe to better observe the arc surfaces of a cutter and a rock surface, the rotation of the driving shaft at the lower end of the bidirectional motor can change the orientation of the detection probe to observe different substances, and two adjustment operations are realized on one bidirectional motor, so that the operation is simple.
According to the invention, the detection probe can be driven by the bidirectional motor to switch between the rock face and the cutter, the cutter interval needing to be observed can be rapidly found by observing the cutting degree of the rock face, then the cutter needing to be replaced can be rapidly found by observing the cutter through the detection probe, compared with the direct observation of the cutter, a great amount of time is reduced, meanwhile, the condition of a specific rock face is combined to determine the replacement of the cutter, the condition that the hob excavation plane is not fit with the rock face easily occurs after the hob is replaced by the new hob can be avoided, the stress of the newly replaced hob is larger, the abrasion rate is high, and the service life of the cutter is short.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the detecting probe in the state of detecting a tool;
FIG. 3 is a schematic view of the structure of the engaging block of the present invention in an engaged state;
FIG. 4 is a schematic view of the horizontal moving device and the swinging device of the present invention;
FIG. 5 is a schematic view of a vertical mobile device according to the present invention;
Fig. 6 is a schematic diagram of a first structure of the present invention in a state of releasing the upper limit of the engaged rack;
Fig. 7 is a second schematic structural view of the snap-on rack of the present invention in a released state;
Fig. 8 is a schematic diagram III of the structure of the snap-on rack in the state of releasing the limit;
fig. 9 is a schematic diagram of the structure of the detection probe in the reverse rotation state.
The device comprises a bracket 1, a support 2, a supporting plate 21, a magnet block 22, a clamping block 23, a sliding block 24, a horizontal slide I, a horizontal slide II, a moving rack 3, a horizontal moving device 4, a horizontal moving device 41, a sliding plate 42, a motor 43, a gear 44, a columnar bulge 5, a swinging device 51, a bidirectional motor 52, a one-way bearing 53, a moving block 54, a ball screw 55, a clamping block 56, a rope 57, a rotating cylinder 58, a cylindrical block 59, a balancing weight 100, a rotating block 300, a vertical positioning block 400, a positioning rod 500, a fixed rod 6, a vertical moving device 61, a slide plate 62, a connecting plate 63, a positioning block 64, an elastic telescopic rod 65, a cylindrical supporting block 66, a swinging rack 7, a clamping rack 8, a detecting probe 9, a hydraulic rod 200, a cutter 600 and a cutter.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1-9, The high-efficiency shield tunneling machine cutter abrasion detection device comprises a bracket 1, a supporting plate 2, a movable rack 3, a horizontal movement device 4, a swinging device 5, a vertical movement device 6, a clamping rack 7, a detection probe 8 and a hydraulic rod 9;
The two brackets 1 are provided with two sliding grooves I symmetrically arranged on one side of the two brackets 1 opposite to each other, the supporting plate 2 is horizontally arranged in the sliding grooves I of the two brackets 1, and two ends of the supporting plate 2 are of T-shaped structures, and the supporting plate 2 can vertically move up and down in the T-shaped sliding grooves I of the brackets 1;
The top surface of the further supporting plate 2 is provided with a horizontal slideway I24, the horizontal moving device 4 is arranged in the horizontal slideway I24 of the supporting plate 2, and the horizontal moving device 4 can horizontally move in the horizontal slideway I24 of the supporting plate 2, and the swinging device 5 is fixedly arranged on the horizontal moving device 4 through a connecting block and is positioned above the horizontal moving device 4;
the detection probe 8 is arranged on the swinging device 5, and in the specific implementation process, the detection probe 8 is used for carrying out abrasion detection on a plurality of groups of cutters 600 and excavated rock surfaces on the shield tunneling machine cutterhead 200, and the detection result is displayed through an external display;
the hydraulic rod 9 is arranged on the support 1 far away from one end of the clamping rack 7, the output end of the hydraulic rod 9 is connected with the lower surface of the support plate 2, and the hydraulic rod 9 can assist in adjusting the height of the support plate 2 and can limit the height of the support plate 2 during specific implementation;
As further shown in fig. 3, the support plate 2 is provided with a magnet block 21, a clamping block 22, a sliding block 23, a horizontal slideway I24 and a horizontal slideway II 25, the top surface of the support plate 2 is provided with the horizontal slideway I24, one end of the support plate 2, which is close to the clamping rack 7, is provided with the horizontal slideway II 25, one end inside the horizontal slideway II 25 is provided with the sliding block 23, one side of the upper surface of the support plate 2 is provided with the magnet block 21, the magnet block 21 and the sliding block 23 are positioned on the same side, the sliding block 23 can horizontally move in the horizontal slideway II 25, the further clamping block 22 is arranged at the top of the sliding block 23, the clamping block 22 is positioned between the clamping rack 7 and the bracket 1, and the clamping block 22 can be horizontally clamped on the clamping rack 7;
as further shown in fig. 4, the horizontal moving device 4 comprises a sliding plate 41, a motor 42, a gear 43 and a columnar protrusion 44, wherein the sliding plate 41 is slidably arranged in the horizontal slideway one 24 of the supporting plate 2, the sliding plate 41 can horizontally move in the horizontal slideway one 24 of the supporting plate 2, the motor 42 is horizontally arranged on the sliding plate 41, the output end of the motor 42 is connected with the gear 43, the gear 43 is meshed with the moving rack 3 positioned below the motor 42, meanwhile, the columnar protrusion 44 is arranged on the sliding plate 41 and faces the direction of the clamping block 22, and the columnar protrusion 44 and the columnar protrusion are on the same straight line, and can contact with the clamping block 22 and drive the columnar protrusion 44 to move together when moving towards the direction of the clamping block 22;
Meanwhile, as shown in fig. 4, the swinging device 5 comprises a bidirectional motor 51, a one-way bearing 52, a moving block 53, a ball screw 54, a clamping block 55, a rope 56, a rotating cylinder 57, a cylindrical block 58, a balancing weight 59, a rotating block 100, a vertical positioning block 300, a positioning rod 400 and a fixed rod 500, wherein, as shown in fig. 4, the sliding plate 41 is semi-I-shaped, the bidirectional motor 51 is vertically arranged at the top of the sliding plate 41 through a connecting block, and the bidirectional motor 51 is positioned inside the sliding plate 41;
The number of the unidirectional bearings 52 is two, and a gear ring clamping structure is arranged at the joint of the unidirectional bearings 52 and the two output shafts of the bidirectional motor 51 on the output shafts at the upper end and the lower end of the bidirectional motor 51, and under the action of the gear ring clamping structure, the two output shafts of the bidirectional motor 51 can be clamped with the unidirectional bearings 52 only by rotating in a specified direction, so that the driving effect of the bidirectional motor 51 can be transmitted to the ball screw 54 and the cylindrical block 58 connected to the unidirectional bearings 52;
When the rotation directions of the two output shafts of the bidirectional motor 51 are opposite to the specified directions, the gear ring clamping structure is separated from the clamping, so that the driving force of the bidirectional motor 51 cannot be transmitted to the ball screw 54 and the cylindrical block 58, and therefore the ball screw 54 and the cylindrical block 58 can rotate through the unidirectional bearing 52 in different rotation directions corresponding to the bidirectional motor 51 respectively, and the rotation of the ball screw 54 and the cylindrical block 58 are not influenced;
the ball screw 54 is vertically arranged on the upper surface of the one-way bearing 52, one end of the rope 56 is connected with the balancing weight 59, and the other end of the rope 56 is fixedly connected with the rotating block 100, the rotating block 100 is arranged in a circumferential slideway of the vertical positioning block 300, and the rotating block 100 can rotate in the circumferential slideway of the vertical positioning block 300;
The vertical positioning block 300 is further nested on the outer surface of the bidirectional motor 51, the vertical positioning block 300 can vertically move up and down on the outer surface of the bidirectional motor 51, the rotary cylinder 57 is further rotatably arranged on the cylindrical block 58, and the rotary cylinder 57 can swing up and down around the cylindrical block 58 in a vertical plane;
the balancing weight 59 is arranged at one end of the rotary cylinder 57 far away from the detection probe 8, and the balancing weight 59 is heavier relative to the detection probe 8, so that the detection probe 8 is always driven by the balancing weight 59 to face upwards;
the number of the positioning rods 400 is two, the bottom ends of the positioning rods 400 are oppositely arranged on the bidirectional motor 51, and the upper parts of the positioning rods 400 penetrate through the clamping blocks 55;
as further shown in fig. 4, one end of the fixing rod 500 is connected to the vertical positioning block 300, and the other end is fixedly connected to the clamping block 55;
Further as shown in FIG. 5, the vertical moving device 6 comprises a slideway plate 61, a connecting plate 62, a positioning block 63, an elastic telescopic rod 64, a cylindrical supporting block 65 and a swinging rack 66;
Wherein the slide plate 61 is vertically arranged on the lower surface of the support plate 2, and the slide plate 61 is positioned beside the clamping rack 7; the connecting plate 62 is arranged in a slideway of the slideway plate 61, the connecting plate 62 can vertically move up and down in the slideway of the slideway plate 61, one end of the connecting plate 62 is connected with a cylindrical supporting block 65, the other end is connected with a swinging rack 66, a further positioning block 63 is vertically arranged on the cylindrical supporting block 65, and the positioning block 63 is made of rubber and is provided with a clamping groove meshed with the rotating cylinder 57;
The further elastic telescopic rod 64 is vertically arranged on the bottom plate at the lower end of the slideway plate 61, the output end of the elastic telescopic rod 64 is connected with the connecting plate 62 above the elastic telescopic rod 64, the connecting plate 62 is always driven by the elastic telescopic rod 64 towards the direction of the positioning block 63, the tooth angle of the swinging rack 66 is the same as that of the moving rack 3, the side end of the swinging rack 66 can be attached to the side end of the moving rack 3, and the swinging rack 66 and the moving rack 3 can be in the same straight line when the swinging rack 66 is at the uppermost.
The working principle of the invention is as follows:
In the specific implementation process, the motor 42 drives the gear 43 to move on the movable rack 3 to adjust the horizontal position of the detection probe 8 indirectly connected with the sliding plate 41, and when the vertical position of the detection probe 8 needs to be changed, if the vertical position is locally adjusted, the output shaft at the upper end of the bidirectional motor 51 drives the ball screw 54 to rotate through the one-way bearing 52 so as to drive the movable block 53 to move up and down, and the movable block 53 moves through the fixed rod 500 so as to drive the vertical positioning block 300 to move up and down;
The vertical positioning block 300 drives the rotating block 100 to move up and down, the rotating block 100 drives the balancing weight 59 to move up and down through the rope 56, and then the rotating cylinder 57 is controlled to swing up and down to adjust the height and the orientation of the detection probe 8;
If the adjustment is performed in a large range, the motor 42 drives the gear 43 to move on the moving rack 3 firstly, then to move on the swinging rack 66 continuously until the gear is meshed with the clamping rack 7, and at the moment, the columnar protrusion 44 collides and presses the clamping block 22 to move towards the direction of the magnet block 21 so as to be separated from the clamping rack 7 to be clamped as shown in fig. 6 and 7;
The output shaft at the upper end of the bidirectional motor 51 rotates to drive the moving block 53 to move upwards on the positioning rod 400, one end of the rotating cylinder 57 where the detection probe 8 is located moves downwards along with the movement to press the cylindrical supporting block 65 below the rotating cylinder 57, and meanwhile the rotating cylinder 57 is also just clamped on the clamping groove of the positioning block 63 as shown in fig. 7;
The cylindrical supporting block 65 moves downwards to drive the connecting plate 62 to move downwards, and the connecting plate 62 moves downwards to drive the swing rack 66 to be separated from being meshed with the gear 43 as shown in fig. 8;
The motor 42 drives the gear 43 to move up and down on the clamping rack 7, so that the overall height position of the detection probe 8 can be controlled, and the rotary column 57 is clamped by the positioning block 63 in the moving process of the gear 43, so that the gear 43 can be prevented from falling off from the clamping rack 7;
in the process that the gear 43 drives one end of the supporting plate 2 to move up and down on the clamping rack 7, the hydraulic rod 9 also drives the other end of the supporting plate 2 below the supporting plate 2 and the components connected with the hydraulic rod to move up and down together vertically, and the gear 43 and the hydraulic rod 9 act together at the two ends of the supporting plate 2, so that the process that the two ends of the supporting plate 2 are stressed up and down simultaneously can be carried out stably;
After the height adjustment of the detection probe 8 is finished, the rotary column 57 is driven by the moving block 53 to move upwards, the clamping block 22 is clamped on the clamping rack 7 again under the influence of the magnet block 21, the clamping block 22 pushes the sliding plate 41 back to enable the gear 43 to be separated from the clamping rack 7 to be meshed, and then the swinging rack 66 moves upwards to be meshed with the gear 43;
When the rock surface is required to be observed, only the driving shaft at the lower end of the bidirectional motor 51 is required to rotate to drive the rotary cylinder 57 to rotate, so that the detection probe 8 is turned from one side of the cutter to one side of the rock surface as shown in fig. 9, the rock surface can be observed, and the up-and-down swing angle of the rotary cylinder 57 can be adjusted in the observation process to adapt to the cutting angle of the rock surface so as to achieve a better observation effect;
The detection probe 8 can be switched between the rock face and the cutter under the driving of the bidirectional motor 51, the cutter interval needing to be observed can be rapidly found by observing the cutting degree of the rock face, then the cutter needing to be replaced can be rapidly found by observing the cutter through the steering of the detection probe 8, and a large amount of time is reduced compared with the direct observation of the cutter.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310143776.8A CN116337422B (en) | 2023-02-21 | 2023-02-21 | Efficient shield constructs quick-witted cutter wearing and tearing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310143776.8A CN116337422B (en) | 2023-02-21 | 2023-02-21 | Efficient shield constructs quick-witted cutter wearing and tearing detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116337422A CN116337422A (en) | 2023-06-27 |
| CN116337422B true CN116337422B (en) | 2025-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310143776.8A Active CN116337422B (en) | 2023-02-21 | 2023-02-21 | Efficient shield constructs quick-witted cutter wearing and tearing detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116337422B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217586282U (en) * | 2022-06-27 | 2022-10-14 | 马鞍山灵山机械设备科技有限公司 | A shield machine tool wear detection device |
| CN218444959U (en) * | 2022-08-19 | 2023-02-03 | 中国水利水电第十四工程局有限公司 | Shield constructs machine cutter abrasion testing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021070114A (en) * | 2019-10-31 | 2021-05-06 | 株式会社ジェイテクト | Tool wear prediction system |
| CN215003329U (en) * | 2021-06-22 | 2021-12-03 | 武汉华育诺为信息技术有限公司 | Portable cutter length measuring device for practical training teaching |
-
2023
- 2023-02-21 CN CN202310143776.8A patent/CN116337422B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217586282U (en) * | 2022-06-27 | 2022-10-14 | 马鞍山灵山机械设备科技有限公司 | A shield machine tool wear detection device |
| CN218444959U (en) * | 2022-08-19 | 2023-02-03 | 中国水利水电第十四工程局有限公司 | Shield constructs machine cutter abrasion testing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116337422A (en) | 2023-06-27 |
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