CN216379721U - Adjustable plate type raking device - Google Patents
Adjustable plate type raking device Download PDFInfo
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- CN216379721U CN216379721U CN202123076568.6U CN202123076568U CN216379721U CN 216379721 U CN216379721 U CN 216379721U CN 202123076568 U CN202123076568 U CN 202123076568U CN 216379721 U CN216379721 U CN 216379721U
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- shovel
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- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 230000003019 stabilising effect Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 abstract description 22
- 238000010276 construction Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000010408 sweeping Methods 0.000 description 6
- 238000007790 scraping Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Soil Working Implements (AREA)
Abstract
The utility model relates to an adjustable plate type raking device. The scraper plate type frame comprises a structural frame, frame side plates are arranged on two sides of the bottom of the structural frame, a plurality of frame middle plates are arranged in the middle of the bottom of the structural frame, front scraper plates are arranged between the frame side plates and the front parts of the frame middle plates and between the front parts of the adjacent frame middle plates, scraper plates are arranged between the frame side plates and the middle rear parts of the frame middle plates and between the middle rear parts of the adjacent frame middle plates, and rear scraper plates are arranged between the frame side plates and the rear parts of the frame middle plates and between the rear parts of the adjacent frame middle plates; the front shovel plate comprises a front shovel plate side plate with a connecting hole, a front shovel plate bottom plate is arranged between the bottoms of the front shovel plate side plates, the rear shovel plate comprises a rear shovel plate side plate with a connecting hole, and a rear shovel plate bottom plate is arranged between the bottoms of the rear shovel plate side plates. The utility model has reasonable structural design and strong universality, and can carry out corresponding adjustment according to the soil quality condition during construction so as to ensure the operation effect.
Description
Technical Field
The utility model belongs to the technical field of dredging construction equipment, and particularly relates to an adjustable plate type raking device.
Background
In the dredging construction of port and channel, the drag-and-carry shallow-sweeping of the water bottom by the raking device is an effective way to improve the quality of dredging engineering, shorten the time for shallow-sweeping, dig less ultra-deep waste and reduce the engineering cost, and especially has more obvious effects on medium dense sand, mud-filled sand and cohesive soil. The drag harrow leveling device is used for carrying out shallow sweeping construction, the flatness of the water bottom can be effectively improved, the height difference of furrows is reduced, the strip-shaped shallow ridges are changed into individual shallow points, the volcanic rock covering layer is peeled off, conditions are created for finally sweeping the shallow points, the shallow sweeping efficiency is greatly improved, and the time consumption of engineering in a shallow sweeping stage is shortened.
The existing plate type raking device generally comprises a structural frame, a scraper is arranged on the structural frame, and the raking device is dragged to move on soil at the bottom of water through the dragging effect provided by ship facilities to cut shallow stems under water so as to achieve the raking effect. The steel structure is not easy to deform when contacting with the obstacle, and can directly generate larger cutting force on the obstacle under the dragging of the self-propelled ship, so the steel structure is widely applied to modern dredging engineering.
In practical use, the plate type harrow flat device with the structure has the following problems: the shovel plate and the scraper of the plate type raking device are both of a fixed structure, namely, the cutting angle cannot be changed, and after the scraper is put into use, soil of different types is limited. When the soil texture is harder, if the contained angle of shovel board and mud face is too big then lead to the cutting resistance too big and can't effectively cut, and when the soil texture is softer, if the contained angle undersize of shovel board and mud face then lead to cutting inefficiency. Consequently, the board-like ware of raking of current structure can't adapt different submarine soil property well, leads to the commonality of equipment relatively poor, need dispose different ware of raking when raking the operation to different submarine soil property, leads to equipment complexity to promote, leads to the loaded down with trivial details degree of operation to promote simultaneously, construction operating efficiency reduces. Therefore, the structure of the plate raking device needs to be optimally designed to solve the technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adjustable plate type raking device with reasonable structural design and strong universality for solving the technical problems in the prior art.
The technical scheme adopted by the utility model for solving the technical problems in the prior art is as follows: an adjustable plate type raking device comprises a structural frame, frame side plates are mounted on two sides of the bottom of the structural frame, a plurality of frame middle plates are mounted in the middle of the bottom of the structural frame, front shovel plates are mounted between the frame side plates and the front portions of the frame middle plates and between the front portions of the adjacent frame middle plates, scraping plates are mounted between the frame side plates and the middle rear portions of the frame middle plates and between the middle rear portions of the adjacent frame middle plates, and rear shovel plates are mounted between the frame side plates and the rear portions of the frame middle plates and between the rear portions of the adjacent frame middle plates; the front shovel plate comprises front shovel plate side plates with connecting holes, a front shovel plate bottom plate with a front cutting edge is arranged between the bottoms of the front shovel plate side plates, the rear shovel plate comprises rear shovel plate side plates with connecting holes, and a rear shovel plate bottom plate with a rear cutting edge is arranged between the bottoms of the rear shovel plate side plates; the front parts of the frame side plate and the frame middle plate are provided with connecting holes and front arc-shaped holes, the rear parts of the frame side plate and the frame middle plate are provided with connecting holes and rear arc-shaped holes, fastening bolts are arranged between the connecting holes of the front shovel side plate and the connecting holes and the front arc-shaped holes of the front shovel side plate and the frame middle plate, and fastening bolts are arranged between the connecting holes of the rear shovel side plate and the connecting holes and the rear arc-shaped holes of the rear shovel side plate and the frame middle plate.
The utility model has the advantages and positive effects that:
the utility model provides an adjustable plate type leveling device with reasonable structural design, compared with the existing leveling device, the adjustable leveling device is characterized in that a plurality of front shoveling plates arranged at the front part are connected with a frame side plate and a frame middle plate by fastening bolts, and the fastening bolts are positioned in arc holes on the frame side plate and the frame middle plate, so that each front shoveling plate can be subjected to angle adjustment according to the actual operation requirement, and a plurality of rear shoveling plates arranged at the rear part are connected with the frame side plate and the frame middle plate by fastening bolts, and the fastening bolts are positioned in the arc holes on the frame side plate and the frame middle plate, so that each rear shoveling plate can be subjected to angle adjustment according to the actual operation requirement. The characteristic that anterior shovel board and rear portion shovel board can carry out angle modulation has adapted different construction soil property conditions well to the requirement of raking the flat ware shovel board, can reduce the angle modulation of scraper blade under harder soil property condition in order to realize more effectual cutting, can increase the angle modulation of scraper blade under softer soil property condition in order to promote cutting efficiency, consequently this adjustable plate-type raking device equipment can be applied to the construction operation of different soil property conditions, and the commonality is strong.
Preferably: the structural frame comprises a front cross beam and a rear cross beam, a connecting cross beam is arranged between the front cross beam and the rear cross beam, a plurality of reinforcing oblique beams are further arranged between the front cross beam and the rear cross beam, and a plurality of supporting beams are arranged behind the rear cross beam.
Preferably: a notch is arranged in the middle of the top edge of the frame side plate, the end part of the structural frame falls into the notch, and the front cross beam and the rear cross beam are welded and fixed with the frame side plate; a notch is formed in the middle of the top edge of the frame middle plate, the middle of the structural frame falls into the notch, and the front cross beam, the rear cross beam and the support beam are welded and fixed with the frame middle plate.
Preferably: the outer edges of the scrapers at the two ends are welded and fixed with the side plates of the frame, and the inner edges are welded and fixed with the middle plate of the frame and the rear ends of the supporting beams; one side edge of the scraper positioned in the middle is welded and fixed with the rear ends of the frame middle plate and the supporting beam on the side, and the other side edge is welded and fixed with the rear ends of the frame middle plate and the supporting beam on the other side.
Preferably: still include hoist device, hoist device is including installing two front lifting ear plates of the left and right sides on anterior crossbeam and installing two back lifting ear plates of the left and right sides on a supporting beam, all is connected with the hoist and mount chain through hoist and mount shackle on each front lifting ear plate and each back lifting ear plate.
Preferably: the front ends of the two frame side plates extend to the front part to form a traction connecting plate, and a traction chain is connected to the traction connecting plate through a traction shackle; and a traction reinforcing plate is welded between the traction connecting plate and the front cross beam.
Preferably: still include stabilising arrangement, stabilising arrangement is connected with stably on stabilizing the otic placode and drawing the cable including installing the stable otic placode on both sides connection crossbeam.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic cross-sectional view taken at the location A-A in FIG. 1;
fig. 3 is a schematic cross-sectional view at the position B-B in fig. 1.
In the figure:
1. a front cross member; 2. front lifting lug plates; 3. hoisting and shackle; 4. hoisting a chain; 5. pulling the reinforcing plate; 6. pulling the chain; 7. pulling and shackle; 8. stably pulling the cable; 9. reinforcing the oblique beam; 10. stabilizing the ear plate; 11. a squeegee; 12. a frame side plate; 13. a front shovel plate; 13-1, a front shovel plate side plate; 13-2, a front shovel plate bottom plate; 14. then the ear plate is hoisted; 15. a frame intermediate plate; 16. a rear shovel plate; 16-1, a rear shovel plate side plate; 16-2, a back shovel plate bottom plate; 17. fastening a bolt; 18. a support beam; 19. a rear cross member; 20. connecting the cross beam; 21. a front arcuate aperture; 22. a rear arcuate aperture.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail.
Referring to fig. 1, 2 and 3, the adjustable plate-type harrow plate of the utility model comprises a structural frame, wherein the structural frame is used as a main body part of the plate-type harrow plate, and other parts are arranged on the structural frame.
In this embodiment, the structural frame includes a front cross member 1 and a rear cross member 19, a connecting cross member 20 is provided between the front cross member 1 and the rear cross member 19, a plurality of reinforcing oblique members 9 are further installed between the front cross member 1 and the rear cross member 19, and a plurality of support beams 18 are installed behind the rear cross member 19. The front cross beam 1, the rear cross beam 19, the connecting cross beams 20, the reinforcing oblique beams 9 and the support beams 18 are all thick-wall steel pipes, the front cross beam 1 and the rear cross beam 19 are arranged in parallel, the end parts of the thick-wall steel pipes are sealed by blind plates welded and installed at the end parts of the front cross beam 1 and the rear cross beam 19, the front end and the rear end of each connecting cross beam 20 are respectively welded and fixed with the front cross beam 1 and the rear cross beam 19, the front end and the rear end of each reinforcing oblique beam 9 are respectively welded and fixed with the front cross beam 1 and the rear cross beam 19, as shown in the figure, the reinforcing oblique beams 9 between every two adjacent connecting cross beams 20 are arranged in a V shape, and the support beams 18 are used for installing auxiliary components, and as shown in the figure, the support beams 18 are arranged at equal intervals.
The frame side plates 12 are installed on two sides of the bottom of the structural frame, and the plurality of frame middle plates 15 are installed in the middle of the bottom of the structural frame, as shown in the figure, the distance between each frame side plate 12 and the adjacent frame middle plate 15 is equal to the distance between the adjacent frame middle plates 15.
In this embodiment, a gap is provided in the middle of the top edge of the frame side plate 12, the end of the structural frame falls into the gap, and the front cross beam 1 and the rear cross beam 19 are welded and fixed with the frame side plate 12; a gap is arranged in the middle of the top edge of the frame middle plate 15, the middle of the structural frame falls into the gap, and the front cross beam 1, the rear cross beam 19 and the support beam 18 are welded and fixed with the frame middle plate 15.
Front shoveling plates 13 are mounted between the frame side plates 12 and the front portions of the frame middle plates 15 and between the front portions of the adjacent frame middle plates 15, scraping plates 11 are mounted between the frame side plates 12 and the middle rear portions of the frame middle plates 15 and between the middle rear portions of the adjacent frame middle plates 15, and rear shoveling plates 16 are mounted between the frame side plates 12 and the rear portions of the frame middle plates 15 and between the rear portions of the adjacent frame middle plates 15. The front shovel 13 is used for cutting soil at the bottom of the water when the plate type harrow flat device drags forwards to move, the scraper 11 is used for scraping and leveling the soil at the bottom of the water when the plate type harrow flat device drags forwards to move, and the rear shovel 16 is used for cutting the soil at the bottom of the water when the plate type harrow flat device drags backwards to move.
The front shovel plate 13 comprises front shovel plate side plates 13-1 with connecting holes, and a front shovel plate bottom plate 13-2 with a cutting edge at the front part is arranged between the bottoms of the front shovel plate side plates 13-1. The front parts of the frame side plate 12 and the frame middle plate 15 are provided with a connecting hole and a front arc-shaped hole 21, and a fastening bolt 17 is arranged between the connecting hole of the front shovel plate side plate 13-1 and the connecting hole and the front arc-shaped hole 21 of the front parts of the frame side plate 12 and the frame middle plate 15.
Specifically, as shown in fig. 2 and 3, a connecting hole is provided in the front of the front shovel side plate 13-1, the connecting hole is aligned with a connecting hole provided in the front of the frame side plate 12 and the frame intermediate plate 15, and a fastening bolt 17 is inserted into the connecting hole, and the fastening bolt 17 functions as a rotating shaft, that is, the front shovel 13 can rotate at a certain angle around the fastening bolt 17, thereby achieving the angle adjustment. Two connecting holes which are positioned on the same arc are arranged at the rear part of the front shovel plate side plate 13-1, the two connecting holes are aligned with the front arc-shaped hole 21 and penetrate through the two fastening bolts 17, and the angle adjustment is realized by loosening and screwing the two fastening bolts 17.
The rear shovel plate 16 comprises rear shovel plate side plates 16-1 with connecting holes, and a rear shovel plate bottom plate 16-2 with a cutting edge at the rear part is arranged between the bottoms of the rear shovel plate side plates 16-1. And a connecting hole and a rear arc-shaped hole 22 are arranged at the rear parts of the frame side plate 12 and the frame middle plate 15, and a fastening bolt 17 is arranged between the connecting hole of the rear shovel plate side plate 16-2 and the connecting hole and the rear arc-shaped hole 22 at the rear parts of the frame side plate 12 and the frame middle plate 15.
Specifically, as shown in fig. 2 and 3, a connecting hole is provided in the upper portion of the rear blade side plate 16-1, the connecting hole is aligned with a connecting hole provided in the upper portion of the rear portion of the frame side plate 12 and the frame intermediate plate 15, and a fastening bolt 17 is inserted into the connecting hole, and the fastening bolt 17 functions as a rotating shaft, that is, the rear blade 16 can rotate at a certain angle around the fastening bolt 17, thereby achieving angle adjustment. Two connecting holes located on the same arc are formed in the lower portion of the rear shovel side plate 16-1, the two connecting holes are aligned with the rear arc hole 22 and penetrate through the two fastening bolts 17, and the angle adjustment is achieved by loosening and tightening the two fastening bolts 17.
The outer edges of the scrapers 11 at the two ends are welded and fixed with the frame side plates 12, and the inner edges are welded and fixed with the frame middle plate 15 and the rear ends of the support beams 18; one side edge of the blade 11 located at the center is welded to the rear ends of the frame intermediate plate 15 and the support beam 18 on the one side, and the other side edge is welded to the rear ends of the frame intermediate plate 15 and the support beam 18 on the other side.
This adjustable plate-type harrow tie ware still includes hoist device, and hoist device is used for construction boats and ships facility to hoist this harrow tie ware. The hoisting device comprises a left front hoisting ear plate 2 and a right front hoisting ear plate 2 which are arranged on the front cross beam 1, and a left rear hoisting ear plate 14 and a right rear hoisting ear plate 14 which are arranged on the supporting beam 18, wherein hoisting chains 4 are connected to the front hoisting ear plates 2 and the rear hoisting ear plates 14 through hoisting shackles 3. The hoisting chains 4 are equal in length and are converged at the end part, when hoisting is carried out, a crane hook of the ship facility is connected with the hoisting chains 4, the harrowing device is hoisted integrally, and the hoisted harrowing device is separated from the water surface and is hung at the stern of the ship facility under the normal condition.
In this embodiment, the device further comprises a stabilizing device, the stabilizing device comprises stabilizing ear plates 10 installed on the connecting cross beams 20 at two sides, and the stabilizing ear plates 10 are connected with stabilizing pull cables 8. The stabilizing device is used for being connected and fixed with the ship (the stable pull cable 8 is tightly tied and fixed with the structure of the stern) when the harrowing device is in a hoisting state, so that the problem that the harrowing device shakes at the stern to collide with the ship due to the action of wind waves and the like when the ship facilities are in navigation is prevented, and the safety is ensured.
The adjustable plate type leveling device further comprises a traction device, and the traction device is used for traction movement of the leveling device by construction ship facilities. The front ends of the two frame side plates 12 extend to the front part to form a traction connecting plate, and a traction chain 6 is connected to the traction connecting plate through a traction shackle 7; in order to improve the structural strength of the drawing action, a drawing reinforcing plate 5 is welded and installed between the drawing connecting plate and the front cross beam 1, as shown in the figure, the drawing reinforcing plate 5 is a square thick steel plate, one side edge of the thick steel plate is welded and fixed with the drawing connecting plate, and the other side edge of the thick steel plate is welded and fixed with the front cross beam 1. The pulling chain 6 is usually connected to the stern of the construction vessel, and when the entire plate-type harrow plate is lowered to the bottom of the water, the pulling chain 6 pulls the harrow plate forward along with the travel of the vessel.
The operation mode is as follows:
the plate type raking device is hung at the stern position by a ship crane and is fixedly connected with a ship by a stabilizing device, so that the safety is improved; after the ship facility moves to an operation water area, a constructor adjusts the angle of a shovel plate on the leveling device according to the pre-acquired underwater soil condition information (normally, the leveling device moves forwards in a dragging way, so that the angle of a front shovel plate 13 is mainly adjusted); after the adjustment is finished, the limiting function of the stabilizing device is firstly removed, then the harrowing device is lowered to the water bottom by adopting a ship crane, then the ship facilities run and move along the set harrowing path, and the harrowing device moves on the set harrowing path to harrow soil on the water bottom path; specifically, the front shovel 13 cuts the raised part of the soil on the water bottom, the cut soil moves backwards and is accumulated in front of the scraper 11, the scraper 11 pushes the soil forwards along with the forward movement of the raking device, and when the soil passes through the depression at the water bottom, the soil enters the depression to fill the depression, so that the raking device can perform the functions of cutting peaks and filling valleys on the water bottom, and the mud surface at the water bottom is leveled after the raking operation, so that the preparation is prepared for the next construction.
Claims (7)
1. An adjustable plate type raking device is characterized in that: the scraper plate structure comprises a structural frame, frame side plates (12) are installed on two sides of the bottom of the structural frame, a plurality of frame middle plates (15) are installed in the middle of the bottom of the structural frame, front scraper plates (13) are installed between the frame side plates (12) and the front portions of the frame middle plates (15) and between the front portions of the adjacent frame middle plates (15), scraper plates (11) are installed between the frame side plates (12) and the middle rear portions of the frame middle plates (15) and between the middle rear portions of the adjacent frame middle plates (15), and rear scraper plates (16) are installed between the frame side plates (12) and the rear portions of the frame middle plates (15) and between the rear portions of the adjacent frame middle plates (15);
the front shovel plate (13) comprises front shovel plate side plates (13-1) with connecting holes, a front shovel plate bottom plate (13-2) with a cutting edge at the front part is arranged between the bottoms of the front shovel plate side plates (13-1), the rear shovel plate (16) comprises a rear shovel plate side plate (16-1) with a connecting hole, and a rear shovel plate bottom plate (16-2) with a cutting edge at the rear part is arranged between the bottoms of the rear shovel plate side plates (16-1); the front parts of the frame side plate (12) and the frame middle plate (15) are provided with connecting holes and front arc-shaped holes (21), the rear parts of the frame side plate and the frame middle plate are provided with connecting holes and rear arc-shaped holes (22), fastening bolts (17) are arranged between the connecting holes of the front shovel side plate (13-1) and the connecting holes and the front arc-shaped holes (21) of the front parts of the frame side plate (12) and the frame middle plate (15), and the fastening bolts (17) are arranged between the connecting holes of the rear shovel side plate (16-1) and the connecting holes and the rear arc-shaped holes (22) of the rear parts of the frame side plate (12) and the frame middle plate (15).
2. The adjustable plate rake as defined in claim 1, wherein: the structural frame comprises a front cross beam (1) and a rear cross beam (19), a connecting cross beam (20) is arranged between the front cross beam (1) and the rear cross beam (19), a plurality of reinforcing oblique beams (9) are further arranged between the front cross beam (1) and the rear cross beam (19), and a plurality of supporting beams (18) are arranged behind the rear cross beam (19).
3. The adjustable plate rake as defined in claim 2, wherein: a gap is arranged in the middle of the top edge of the frame side plate (12), the end part of the structural frame falls into the gap, and the front cross beam (1) and the rear cross beam (19) are welded and fixed with the frame side plate (12); a gap is arranged in the middle of the top edge of the frame middle plate (15), the middle of the structural frame falls into the gap, and the front cross beam (1), the rear cross beam (19) and the support beam (18) are welded and fixed with the frame middle plate (15).
4. The adjustable plate rake as defined in claim 3, wherein: the outer edges of the scrapers (11) at the two ends are welded and fixed with the frame side plates (12), and the inner edges are welded and fixed with the frame middle plate (15) and the rear ends of the support beams (18); one side edge of the scraper (11) positioned in the middle is welded and fixed with the rear ends of the frame middle plate (15) and the supporting beam (18) on the side, and the other side edge is welded and fixed with the rear ends of the frame middle plate (15) and the supporting beam (18) on the other side.
5. The adjustable plate rake as defined in claim 4, wherein: still include hoist device, hoist device is including installing two front lifting lug plate (2) and installing two back lifting lug plate (14) of controlling on a supporting beam (18) about on anterior crossbeam (1), all is connected with hoist and mount chain (4) through hoist and mount shackle (3) on each front lifting lug plate (2) and each back lifting lug plate (14).
6. The adjustable plate rake as defined in claim 5, wherein: the front ends of the two frame side plates (12) extend to the front part to form a traction connecting plate, and the traction connecting plate is connected with a traction chain (6) through a traction shackle (7); and a traction reinforcing plate (5) is welded and installed between the traction connecting plate and the front cross beam (1).
7. The adjustable plate rake as defined in claim 6, wherein: still include stabilising arrangement, stabilising arrangement is connected with on stabilizing otic placode (10) and stablizing cable (8) including installing stabilizing otic placode (10) on both sides connecting beam (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123076568.6U CN216379721U (en) | 2021-12-08 | 2021-12-08 | Adjustable plate type raking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123076568.6U CN216379721U (en) | 2021-12-08 | 2021-12-08 | Adjustable plate type raking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216379721U true CN216379721U (en) | 2022-04-26 |
Family
ID=81223829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123076568.6U Active CN216379721U (en) | 2021-12-08 | 2021-12-08 | Adjustable plate type raking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216379721U (en) |
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2021
- 2021-12-08 CN CN202123076568.6U patent/CN216379721U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Heng Inventor after: Liu Hao Inventor after: Zhang Yanan Inventor after: Chen Kaiqi Inventor before: Liu Hao Inventor before: Zhang Yanan Inventor before: Chen Kaiqi |
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| CB03 | Change of inventor or designer information |