CN113320970A - Logistics conveying system - Google Patents
Logistics conveying system Download PDFInfo
- Publication number
- CN113320970A CN113320970A CN202110589582.1A CN202110589582A CN113320970A CN 113320970 A CN113320970 A CN 113320970A CN 202110589582 A CN202110589582 A CN 202110589582A CN 113320970 A CN113320970 A CN 113320970A
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- Prior art keywords
- material pushing
- transverse
- rail
- block
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007599 discharging Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 4
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/82—Rotary or reciprocating members for direct action on articles or materials, e.g. pushers, rakes, shovels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses a logistics conveying system which comprises a first longitudinal rail, a second longitudinal rail, a first transverse rail and a second transverse rail, wherein the first longitudinal rail, the second longitudinal rail, the first transverse rail and the second transverse rail are communicated with each other end to end; the discharging manipulator is arranged above any tool at the middle position in the first longitudinal rail; the accurate positioning mechanism for positioning the tool in the middle of the second transverse rail utilizes automation to push and feed materials one by one, improves the production efficiency of workpiece machining, reduces the technical effects of labor cost, machining cost and labor intensity, accurately and reliably positions the workpiece and the tool before machining, and achieves high workpiece machining yield.
Description
Technical Field
The invention relates to the technical field of automatic feeding equipment, in particular to a logistics conveying system.
Background
At present, the loading of the workpiece to be processed generally adopts manual operation, however, the manual operation processing mode has the following defects: 1. the production efficiency is low; 2. the labor intensity and the labor cost are high during mass production; 3. when assembling in batches, lead to the enterprise to need the staff of other posts to dispatch to the assembly line assembly post to make the enterprise effectively allocate, utilize manpower resources, consequently adopted the track to carry the material loading in order to change this phenomenon a lot of mills, but the track is carried and is comparatively difficult to work piece accurate positioning, leads to the product quality after the material loading processing to obtain guaranteeing, and the product disability rate after the processing is higher.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a logistics conveying system, which has the following specific structure.
The logistics conveying system designed by the invention comprises:
the annular conveying track comprises a first longitudinal track, a second longitudinal track, a first transverse track and a second transverse track, the left end port and the right end port of the first transverse track are respectively butted and communicated with the upper end port of the first longitudinal track and the upper end port of the second longitudinal track, the left end port and the right end port of the second transverse track are respectively butted and communicated with the lower end port of the first longitudinal track and the lower end port of the second longitudinal track, and a plurality of mutually parallel tools are arranged in the first longitudinal track, the second longitudinal track, the first transverse track and the second transverse track;
the first material pushing mechanism comprises a first material pushing block, and the first material pushing block penetrates through the upper end of the first longitudinal rail and then abuts against a tool at the right end position in the first transverse rail;
the second material pushing mechanism comprises a second material pushing block, and the second material pushing block penetrates through the right end of the first transverse rail and then props against a tool at the upper end position in the second longitudinal rail;
the third material pushing mechanism comprises a third material pushing block, and the third material pushing block penetrates through the lower end of the second longitudinal rail and then props against a tool at the right end position in the second transverse rail;
the fourth material pushing mechanism comprises a fourth material pushing block, and the fourth material pushing block penetrates through the left end of the second transverse rail and then abuts against a tool at the lower end position in the first longitudinal rail;
the discharging manipulator is positioned above any tool at the middle position in the first longitudinal rail;
and the accurate positioning mechanism is positioned in the middle of the second transverse track and comprises a positioning rod, and the positioning rod penetrates through the second transverse track and then is inserted into a positioning hole of the tool.
Preferably, the tool comprises a workpiece positioning block, the workpiece positioning block is provided with a workpiece positioning groove and through holes located on two corresponding sides of the workpiece positioning groove, clamping blocks are arranged in the two through holes, the bottom ends of the clamping blocks are hinged to inner wall pin shafts at the bottom ends of the through holes, springs are abutted between the rear sides of the clamping blocks and the inner walls of the through holes, the two clamping blocks are made to tightly hold workpieces in the workpiece positioning groove under the action of the springs, and positioning holes are formed in the workpiece positioning block.
Preferably, the fixture further comprises an upward pushing mechanism which is correspondingly located below the unloading manipulator and comprises an upward pushing piece, the upward pushing piece penetrates through the chassis and the first longitudinal rail, the upward pushing piece comprises two unlocking blocks which correspond to the two through holes respectively, a first inclined plane is arranged at the bottom of the clamping block, a second inclined plane is arranged at the top of the unlocking block, and after the unlocking block is inserted into the through holes, the first inclined plane and the second inclined plane are matched with each other to enable the clamping block to retreat and unlock a workpiece on the fixture.
Preferably, the side surface and the end surface of the workpiece positioning block are provided with channels, the inner walls of the first longitudinal rail, the second longitudinal rail, the first transverse rail and the second transverse rail are provided with raised lines, and the raised lines are correspondingly inserted into the channels.
Preferably, a convex block is arranged on the inner side of the upper end of the clamping block, and a clamping space is formed between the convex block and the bottom of the workpiece positioning groove.
Preferably, the discharging manipulator comprises a fixed support, a transverse pushing cylinder, a transverse sliding rail, a lifting cylinder and a pneumatic clamping jaw, the transverse pushing cylinder and the transverse sliding rail are fixed on the fixed support, a piston rod of the transverse pushing cylinder is fixedly connected with a sliding block of the transverse sliding rail, the lifting cylinder is fixed on the sliding block of the transverse sliding rail, a vertical slide way is arranged on the sliding block of the transverse sliding rail, a vertical sliding block is arranged in the vertical slide way, and the pneumatic clamping jaw is fixed on the vertical sliding block.
Preferably, a blanking slope is fixed on the side of the first longitudinal rail and correspondingly located below the pneumatic clamping jaw.
Preferably, the first material pushing mechanism, the second material pushing mechanism, the third material pushing mechanism and the fourth material pushing mechanism further comprise material pushing cylinders, supporting seats and linear guide rails, the material pushing cylinders and the linear guide rails are fixed on the supporting seats, piston rods of the material pushing cylinders are fixedly connected with sliding blocks of the linear guide rails, the first material pushing blocks are fixedly connected with the sliding blocks of the linear guide rails in the first material pushing mechanism, the second material pushing blocks are fixedly connected with the sliding blocks of the linear guide rails in the second material pushing mechanism, the third material pushing blocks are fixedly connected with the sliding blocks of the linear guide rails in the third material pushing mechanism, and the fourth material pushing blocks are fixedly connected with the sliding blocks of the linear guide rails in the fourth material pushing mechanism.
As preferred, accurate positioning mechanism still includes base and location cylinder, and the location cylinder is fixed in on the base, and the locating lever runs through behind the guiding hole of base and fixes continuously with the piston rod of location cylinder.
According to the logistics conveying system designed by the invention, the production efficiency of workpiece processing is improved by pushing and feeding materials one by one automatically, the technical effects of labor cost, processing cost and labor intensity are reduced, an enterprise can effectively utilize human resources, and the workpiece and a tool are accurately and reliably positioned before processing, so that the workpiece processing yield is higher, the quality of a formed workpiece product is greatly improved, and the development requirement of enterprise scale is facilitated.
Drawings
FIG. 1 is a schematic view (one) of the overall assembly system;
FIG. 2 is an enlarged view at A;
FIG. 3 is a cross-sectional structural view of the entire assembly;
FIG. 4 is an enlarged view at B;
FIG. 5 is a schematic view (two) of the overall assembly system;
FIG. 6 is an enlarged view at C;
FIG. 7 is a schematic view (one) of the tooling structure;
fig. 8 is a schematic view (ii) of the tool structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Example (b):
as shown in the accompanying drawings, the logistics conveying system for medical components described in this embodiment includes a workbench 1, a chassis 2 fixed on the workbench 1, a first material pushing mechanism 6, a second material pushing mechanism 7, a third material pushing mechanism 8, a fourth material pushing mechanism 9, an annular conveying track 3 fixed on the chassis 2, a discharging manipulator 5, and a precise positioning mechanism 14; the annular conveying track 3 comprises a first longitudinal track 31, a second longitudinal track 32, a first transverse track 33 and a second transverse track 34, the left and right ports of the first transverse track 33 are respectively butted and communicated with the upper port of the first longitudinal track 31 and the upper port of the second longitudinal track 32, the left and right ports of the second transverse track 34 are respectively butted and communicated with the lower port of the first longitudinal track 31 and the lower port of the second longitudinal track 32, and a plurality of tools 11 arranged in parallel are arranged in the first longitudinal track 31, the second longitudinal track 32, the first transverse track 33 and the second transverse track 34; the first material pushing mechanism 6 comprises a first material pushing block 61, and the first material pushing block 61 penetrates through the upper end of the first longitudinal rail 31 and then abuts against the tool 11 at the right end position in the first transverse rail 33; the second material pushing mechanism 7 comprises a second material pushing block 71, and the second material pushing block 71 penetrates through the right end of the first transverse rail 33 and then props against the tool 11 at the upper end position in the second longitudinal rail 32; the third material pushing mechanism 8 comprises a third material pushing block 81, and the third material pushing block 81 penetrates through the lower end of the second longitudinal rail 32 and then abuts against the tool 11 at the right end position in the second transverse rail 34; the fourth material pushing mechanism 9 comprises a fourth material pushing block 91, and the fourth material pushing block 91 penetrates through the left end of the second transverse rail 34 and then abuts against the tooling 11 at the lower end position in the first longitudinal rail 31; the unloading manipulator 5 is positioned above any tool 11 at the middle position in the first longitudinal rail 31; the precise positioning mechanism 14 is located in the middle of the second transverse rail 34, the precise positioning mechanism 14 includes a positioning rod 141, and the positioning rod 141 penetrates through the second transverse rail 34 and then is inserted into the positioning hole 113 of the tool 11.
In the system, the first material pushing block is driven to push towards the second longitudinal rail direction, so that a plurality of tools synchronously move towards the second longitudinal rail direction, the tool at the rightmost end enters the right end opening of the first transverse line rail, then the second material pushing block is driven to push towards the second transverse rail direction, a tool at the right end opening of the first transverse rail is pushed into the second longitudinal rail, the plurality of tools in the second longitudinal rail continuously move downwards until the bottommost end in the second longitudinal rail is pushed to the lower end opening of the second longitudinal rail by the tool, then the third pushing block is driven to push towards the first longitudinal rail direction, a tool at the lower end opening of the second longitudinal rail is pushed into the second transverse rail, and the plurality of tools in the second transverse rail continuously move leftwards until a tool at the leftmost end in the second transverse rail is pushed to the left end opening of the second transverse rail, and finally, driving a fourth pushing block to push towards the first transverse track, pushing a tool at the left port of the second transverse track into the first longitudinal track, continuously moving a plurality of tools upwards in the first longitudinal track until pushing the uppermost tool in the first longitudinal track to the front of the first material pushing block, and after the position of the tool to be unloaded corresponds to that of the unloading manipulator, grabbing the machined workpiece on the tool below the unloading manipulator by the unloading manipulator and then unloading the workpiece.
In this embodiment, the tooling 11 includes a workpiece positioning block 111, the workpiece positioning block 111 is provided with a workpiece positioning groove 112 and through holes 111 located at two corresponding sides of the workpiece positioning groove 112, the two through holes 111 are internally provided with clamping blocks 12, the bottom ends of the clamping blocks 12 are hinged to the inner wall pins at the bottom ends of the through holes 111, the springs 13 are abutted between the rear sides of the clamping blocks 12 and the inner walls of the through holes 111, the two clamping blocks hold the workpiece 100 in the workpiece positioning groove 112 tightly under the action of the springs 13, the positioning holes 113 are arranged on the workpiece positioning block 111, the structure enables the workpiece to be clamped into the workpiece positioning groove conveniently, and the work efficiency is improved.
Preferably, in order to stabilize the displacement of the tool 11 in the rail, a channel 114 is provided on the side surface and the end surface of the workpiece positioning block 111, and the inner walls of the first longitudinal rail 31, the second longitudinal rail 32, the first transverse rail 33, and the second transverse rail 34 are provided with a protruding strip 200, and the protruding strip 200 is inserted into the channel 114, so that the tool is displaced under the guidance of the protruding strip 200.
In this embodiment, the device further comprises an upward pushing mechanism 4 correspondingly located below the unloading manipulator 5, the upward pushing mechanism 4 comprises an upward pushing piece 41, the upward pushing piece 41 penetrates through the chassis 2 and the first longitudinal rail 31, the upward pushing piece 41 comprises two unlocking blocks 411 respectively corresponding to the positions of the two through holes 111, the bottom of the clamping block 12 is provided with a first inclined surface 121, the top of the unlocking block 411 is provided with a second inclined surface 412, the upward pushing mechanism 4 further comprises a pushing cylinder 42 fixed on the workbench, a piston rod of the pushing cylinder 42 is fixedly connected with the upward pushing piece 41, and a piston rod of the pushing cylinder 42 extends out to lift the upward pushing piece 41, after the unlocking blocks are inserted into the through holes, the first inclined surface and the second inclined surface are matched with each other, so that the clamping block retreats, the workpiece on the tool is unlocked, and the unlocking mechanism is arranged so that the unloading is performed after the workpiece is grabbed by the unloading manipulator.
In this embodiment, the inner side of the upper end of the clamping block 12 is provided with a protrusion 122, a clamping space exists between the protrusion 122 and the bottom of the workpiece positioning slot 112, and after the side surface of the clamping block 12 abuts against the side surface of the workpiece 100, the workpiece 100 is clamped and limited in the clamping space, so that the workpiece is positioned stably and reliably, and the loading, conveying and processing are facilitated.
In this embodiment, the discharging manipulator 5 includes a fixing bracket 52 fixed on the chassis 2, a transverse pushing cylinder 51, a transverse sliding rail 53, a lifting cylinder 57 and a pneumatic clamping jaw 54, the transverse pushing cylinder 51 and the transverse sliding rail 53 are both fixed on the fixing bracket 52, a piston rod of the transverse pushing cylinder 51 is fixedly connected with a slider of the transverse sliding rail 53, the lifting cylinder 57 is fixed on the slider of the transverse sliding rail 53, a vertical slideway 56 is provided on the slider of the transverse sliding rail 53, a vertical slider 55 is provided in the vertical slideway 56, the pneumatic clamping jaw 54 is fixed on the vertical slider 55, a discharging slope 10 is fixed on a side portion of the first longitudinal rail 31, and the discharging slope 10 is correspondingly located below the pneumatic clamping jaw 54. The lifting cylinder drives the lifting cylinder and the pneumatic clamping jaw to transversely translate by utilizing the transverse pushing cylinder, and drives the pneumatic clamping jaw to lift, so that the upper protruding part of the unlocked workpiece is grabbed and then conveyed to a discharging slope for discharging.
In this embodiment, each of the first material pushing mechanism 6, the second material pushing mechanism 7, the third material pushing mechanism 8 and the fourth material pushing mechanism 9 further includes a material pushing cylinder 62, a supporting seat 63 fixed on the working table 1, and a linear guide rail 64, the material pushing cylinder 62 and the linear guide rail 64 are fixed on the supporting seat 63, a piston rod of the material pushing cylinder 62 is fixedly connected with a slider of the linear guide rail 64, the first material pushing block 61 is fixedly connected with a slider of the linear guide rail 64 in the first material pushing mechanism 6, the second material pushing block 71 is fixedly connected with a slider of the linear guide rail 64 in the second material pushing mechanism 7, the third material pushing block 81 is fixedly connected with a slider of the linear guide rail 64 in the third material pushing mechanism 8, and the fourth material pushing block 91 is fixedly connected with a slider of the linear guide rail 64 in the fourth material pushing mechanism 9, it pushes away the material through the cylinder and makes pushing away material efficiency higher, and reliable and stable when pushing away the material, promotes material loading stability.
In this embodiment, the precise positioning mechanism 14 further includes a base 143 and a positioning cylinder 142, the positioning cylinder 142 is fixed on the base 143, the positioning rod 141 penetrates through the guide hole of the base 143 and then is fixedly connected to the piston rod of the positioning cylinder 142, the positioning rod is driven by the cylinder to enable the positioning efficiency to be high, the positioning is stable and reliable, and the base is fixed on the chassis.
Finally, the fixing can be realized by selecting bolt fixing connection or welding fixing according to actual conditions, the transverse pushing cylinder 51, the lifting cylinder 57, the pneumatic clamping jaw 55, the four pushing cylinders 62 and the positioning cylinder 142 are connected with and controlled by the PLC through the air pump, and the air pump is connected with and controlled by the PLC.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (9)
1. A logistics conveying system, comprising:
the annular conveying track comprises a first longitudinal track, a second longitudinal track, a first transverse track and a second transverse track, the left end port and the right end port of the first transverse track are respectively butted and communicated with the upper end port of the first longitudinal track and the upper end port of the second longitudinal track, the left end port and the right end port of the second transverse track are respectively butted and communicated with the lower end port of the first longitudinal track and the lower end port of the second longitudinal track, and a plurality of mutually parallel tools are arranged in the first longitudinal track, the second longitudinal track, the first transverse track and the second transverse track;
the first material pushing mechanism comprises a first material pushing block, and the first material pushing block penetrates through the upper end of the first longitudinal rail and then abuts against a tool at the right end position in the first transverse rail;
the second material pushing mechanism comprises a second material pushing block, and the second material pushing block penetrates through the right end of the first transverse rail and then props against a tool at the upper end position in the second longitudinal rail;
the third material pushing mechanism comprises a third material pushing block, and the third material pushing block penetrates through the lower end of the second longitudinal rail and then props against a tool at the right end position in the second transverse rail;
the fourth material pushing mechanism comprises a fourth material pushing block, and the fourth material pushing block penetrates through the left end of the second transverse rail and then abuts against a tool at the lower end position in the first longitudinal rail;
the discharging manipulator is positioned above any tool at the middle position in the first longitudinal rail;
and the accurate positioning mechanism is positioned in the middle of the second transverse track and comprises a positioning rod, and the positioning rod penetrates through the second transverse track and then is inserted into a positioning hole of the tool.
2. The logistics conveying system of claim 1, wherein the tooling comprises a workpiece positioning block, the workpiece positioning block is provided with a workpiece positioning groove and through holes at two corresponding sides of the workpiece positioning groove, clamping blocks are arranged in the two through holes, the bottom ends of the clamping blocks are hinged to the inner wall of the bottom ends of the through holes through pins, springs are abutted between the rear sides of the clamping blocks and the inner wall of the through holes, the two clamping blocks hold the workpiece in the workpiece positioning groove tightly under the action of the springs, and the positioning holes are arranged on the workpiece positioning block.
3. The logistics conveying system of claim 2, further comprising an upward pushing mechanism correspondingly located below the unloading manipulator and comprising an upward pushing piece, wherein the upward pushing piece penetrates through the chassis and the first longitudinal rail, the upward pushing piece comprises two unlocking blocks respectively corresponding to the two through holes, a first inclined surface is arranged at the bottom of each clamping block, a second inclined surface is arranged at the top of each unlocking block, and after the unlocking blocks are inserted into the through holes, the first inclined surfaces and the second inclined surfaces are matched with each other to enable the clamping blocks to retreat and unlock workpieces on the tool.
4. The logistics conveying system of claim 2, wherein the side surface and the end surface of the workpiece positioning block are provided with channels, and the inner walls of the first longitudinal rail, the second longitudinal rail, the first transverse rail and the second transverse rail are provided with convex strips, and the convex strips are correspondingly inserted into the channels.
5. The logistics conveying system of claim 2, wherein the clamping block is provided with a convex block at the inner side of the upper end, and a clamping space is formed between the convex block and the bottom of the workpiece positioning groove.
6. The logistics conveying system of claim 1, wherein the unloading manipulator comprises a fixed support, a transverse pushing cylinder, a transverse sliding rail, a lifting cylinder and a pneumatic clamping jaw, wherein the transverse pushing cylinder and the transverse sliding rail are fixed on the fixed support, a piston rod of the transverse pushing cylinder is fixedly connected with a sliding block of the transverse sliding rail, the lifting cylinder is fixed on a sliding block of the transverse sliding rail, a vertical slide way is arranged on the sliding block of the transverse sliding rail, a vertical sliding block is arranged in the vertical slide way, and the pneumatic clamping jaw is fixed on the vertical sliding block.
7. The logistics conveying system of claim 6, wherein a blanking slope is fixed on the side of the first longitudinal rail, and the blanking slope is correspondingly positioned below the pneumatic clamping jaw.
8. The logistics conveying system of any one of claims 1 to 7, wherein each of the first material pushing mechanism, the second material pushing mechanism, the third material pushing mechanism and the fourth material pushing mechanism further comprises a material pushing cylinder, a support seat and a linear guide rail, the material pushing cylinder and the linear guide rail are fixed on the support seat, a piston rod of the material pushing cylinder is fixedly connected with a sliding block of the linear guide rail, the first material pushing block is fixedly connected with a sliding block of the linear guide rail in the first material pushing mechanism, the second material pushing block is fixedly connected with a sliding block of the linear guide rail in the second material pushing mechanism, the third material pushing block is fixedly connected with a sliding block of the linear guide rail in the third material pushing mechanism, and the fourth material pushing block is fixedly connected with a sliding block of the linear guide rail in the fourth material pushing mechanism.
9. The logistics conveying system of any one of claims 1-7, wherein the precision positioning mechanism further comprises a base and a positioning cylinder, the positioning cylinder is fixed on the base, and the positioning rod penetrates through the guide hole of the base and then is fixedly connected with a piston rod of the positioning cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110589582.1A CN113320970A (en) | 2021-05-21 | 2021-05-21 | Logistics conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110589582.1A CN113320970A (en) | 2021-05-21 | 2021-05-21 | Logistics conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113320970A true CN113320970A (en) | 2021-08-31 |
Family
ID=77422088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110589582.1A Withdrawn CN113320970A (en) | 2021-05-21 | 2021-05-21 | Logistics conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113320970A (en) |
-
2021
- 2021-05-21 CN CN202110589582.1A patent/CN113320970A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210831 |
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| WW01 | Invention patent application withdrawn after publication |