CN112678317B - Logging engineering truck and instrument frame and instrument pressing device thereof - Google Patents
Logging engineering truck and instrument frame and instrument pressing device thereof Download PDFInfo
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- CN112678317B CN112678317B CN202011409955.4A CN202011409955A CN112678317B CN 112678317 B CN112678317 B CN 112678317B CN 202011409955 A CN202011409955 A CN 202011409955A CN 112678317 B CN112678317 B CN 112678317B
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention relates to a well logging engineering truck, an instrument frame and an instrument pressing device thereof, wherein the engineering truck comprises a truck box, a perforating instrument and a perforating instrument frame; the instrument frame comprises an instrument roller supporting assembly and an instrument pressing device; the pressing device adopts a modularized detachable structure and comprises a pressing support assembly and a detachable pressing mechanism assembly which are of a modular structure. The invention adopts the detachable mechanical pressing device which is convenient to maintain, maintain or replace, can effectively reduce the maintenance time cost and the production plan loss of equipment maintenance caused by frequent use and multiple loading and unloading times of the perforating instrument, and greatly improves the normal utilization rate of the perforating engineering vehicle.
Description
Technical Field
The invention belongs to the technical field of oil field logging engineering vehicles, and relates to a logging engineering vehicle, an instrument frame of the logging engineering vehicle and an instrument pressing device of the logging engineering vehicle.
Background
The logging is a method for measuring geophysical parameters by utilizing the geophysical characteristics such as electrochemical property, conductive property, acoustic property, radioactivity and the like of rock stratum to obtain various petroleum geology and engineering technical data which are used as original data for well completion and oil field development. When the domestic petroleum industry carries out stratum physical exploration and petroleum drilling, logging must be carried out after the drilling reaches the designed well depth. The well logging engineering truck is a vehicle of a special operation vehicle for an oil field, and is just responsible for the main tasks of transporting personnel and logging instruments to remove oil wells.
The perforation operation is a classification in the well logging operation, and has the characteristics of high operation frequency, more times for loading and unloading perforation instruments and frequent use. Compared with other domestic logging instruments, the utilization rate of the logging instrument is more than two times that of other logging instruments on the basis of a single working day. The perforating instrument needs to be provided with explosive shots at a plurality of designated positions on a body of the perforating instrument before well logging and completion. After the operation is finished, the positions of the shells of the perforating instruments where the shot are placed can generate adhesive iron scrap wires generated by explosive explosion, and the sticking iron scrap wires are compacted by adopting a mechanical clamping mode when the sticking iron scrap wires are placed back to an instrument frame in a vehicle of a logging engineering truck.
The mechanical clamping mode adopted at present is that a lead screw is pressed, and a lead screw pressing device is welded and fixed on a perforating instrument frame. The operation space for maintaining the instrument pressing device is very limited, namely a through long instrument frame cover is arranged outside the perforating instrument frame, and only a small maintenance door of the instrument frame cover is communicated with the instrument pressing device; in addition, a special tool cabinet is arranged on the instrument rack cover. During maintenance, all equipment and sealing plates in a rear cabin of a special operation vehicle body are usually dismantled, and then the mechanical pressing mechanism of the instrument frame is maintained, so that the influence on a normal oil logging task is obvious, and the after-sales service of an enterprise engaged in the manufacture of the special operation vehicle is also greatly influenced.
In view of this, it is necessary to design a special clamping device which can clamp the perforation instrument and is convenient to maintain, so as to improve the service performance of the whole logging engineering truck.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a logging truck with a detachable modular mechanical hold-down device for easy maintenance, maintenance or replacement, and an instrument holder and an instrument hold-down device thereof.
The invention is realized by the following technical scheme:
the compaction device of the perforating instrument compaction device of the logging engineering truck adopts a modularized detachable structure and comprises a compaction support assembly and a compaction mechanism assembly;
the compaction support assembly is of a module structure and comprises a frame and a plurality of compaction support modules which are fixed on the frame and are arranged in parallel and/or stacked;
the frame comprises a strip-shaped bottom plate, a pair of end brackets and a pair of reinforcing baffles; the end part supports are of vertical frame structures and are symmetrically distributed at two ends of the bottom plate; the reinforcing baffles are symmetrically distributed on two sides of the end part bracket, and the end part bracket is welded at two ends of the reinforcing baffles respectively;
the pressing support modules are uniformly arranged at intervals along the bottom plate of the frame and comprise front vertical plates, rear vertical plates, connecting reinforcing beams, upper limiting plates and upper bending flat plates; nuts are embedded in the inner surface above the front vertical plate, the middle part of the front vertical plate is hollow, the reinforcing baffle is welded on the outer side of the upper part of the front vertical plate, and the bottom of the front vertical plate is welded on the bottom plate for fixation; the rear vertical plate is matched with the front vertical plate, the middle part of the rear vertical plate is hollow, a supporting hole is arranged above the rear vertical plate, the reinforcing baffle is welded on the outer side of the upper part of the rear vertical plate, the bottom of the rear vertical plate is welded on the bottom plate for fixing, and the height of the supporting hole is matched with that of the embedded nut; two ends of the connecting reinforcing beam are respectively welded on the inner sides of the lower parts of the front vertical plate and the rear vertical plate; the upper limiting plate is arranged in parallel with the connecting reinforcing beam, and two ends of the upper limiting plate are respectively welded on the inner sides of the upper parts of the front vertical plate and the rear vertical plate; the upper bending flat plate, the front vertical plate and the rear vertical plate are welded at the top end of the upper bending flat plate in a right-angle relationship with each other, and finally a cuboid pressing support module with an internal cavity is formed; every two adjacent compaction support modules and the end supports are fixedly connected through upper connecting plates;
the pressing mechanism assembly is a detachable pressing mechanism, is arranged in an inner cavity of the pressing bracket assembly and comprises a liftable pressing mechanism, an upper connecting plate, a lower pressing plate and a movable supporting pin shaft assembly; the lifting pressing mechanism is positioned between the upper connecting plate and the lower pressing plate and is welded with the upper connecting plate and the lower pressing plate into a whole; the upper connecting plate is attached to the adjacent surfaces of the upper limiting plate and the rear vertical plate at the same time, so that bidirectional positioning is realized; the two movable supporting pin shafts are formed by pin shafts and vertical connecting plates; the fixed end of the pin shaft is provided with a vertical connecting plate, and the vertical connecting plate is provided with a mounting hole which is matched with the embedded nut of the front vertical plate; the free end of the pin shaft extends out of the lower plane of the upper connecting plate and is fed into the supporting hole of the rear vertical plate, meanwhile, the plane perpendicular to one side of the connecting plate is attached to the front vertical plate, and the detachable pressing device is effectively supported and limited through bolts penetrating through the mounting holes and fixedly connected with the embedded nuts.
Logging engineering car perforation instrument closing device, wherein: the pressing support modules are stacked, the bottoms of the front vertical plate and the rear vertical plate of the upper layer of the pressing support module in the upper and lower adjacent layers are respectively welded with the upper bent flat plate of the lower layer of the pressing support module, so that a stacked group of pressing support modules is formed, and every two adjacent groups of pressing support modules and the end supports are fixedly connected into a whole through the upper connecting plate and the upper connecting rib.
Logging engineering car perforation instrument closing device, wherein: the lifting pressing mechanism adopts a jack. The length of the upper connecting plate is slightly smaller than the sum of the length of the inner cavity of the pressing support module and the thickness of the front vertical plate by 1mm, and the width of the upper connecting plate is slightly larger than the sum of the width of the liftable pressing mechanism and the diameter of the pin shaft of the two movable supporting pin shaft assemblies; the length of the lower pressing plate is the same as the length of the main body of the liftable pressing mechanism, and the width of the lower pressing plate is slightly wider than the width of the middle part of the main body of the liftable pressing mechanism.
The perforating instrument frame of the logging engineering truck comprises the instrument roller supporting assembly and the instrument pressing device.
The well logging engineering truck comprises a truck bed, a tool box positioned at the rear part of the truck bed, a perforating instrument and the perforating instrument frame, wherein the perforating instrument frame is positioned between the bottom of the tool box and the bottom plate of the truck bed.
Has the advantages that:
the invention adopts the detachable mechanical pressing device which is convenient to maintain, maintain or replace, can effectively reduce the maintenance time cost and the production plan loss of equipment maintenance caused by frequent use and multiple loading and unloading times of the perforating instrument, and greatly improves the normal utilization rate of the perforating engineering vehicle; the perforating instrument frame has the advantages of being reasonable and compact in structural design and high in strength, being capable of meeting the requirements of arrangement of perforating instrument frames of various oil field logging engineering vehicles and the installation requirements of detachable pressing devices, being convenient to install and detach, being capable of timely and effectively maintaining equipment, effectively improving production efficiency, reducing the maintenance cost of vehicles for users, having obvious influence on normal oil logging tasks and having obvious influence on after-sale service of enterprises engaged in manufacturing special operation vehicles.
Drawings
FIG. 1 is a schematic structural diagram of a perforating instrument holder of a logging truck according to the invention;
FIG. 2 is a schematic view of a hold-down bracket assembly of the hold-down device of the logging truck instrument of the present invention;
FIG. 3 is a schematic view of the assembly of the hold-down bracket assembly and hold-down mechanism assembly of the hold-down device of the logging truck instrument of the present invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a rear view of FIG. 3;
FIG. 6 and FIG. 7 are schematic structural views of the logging truck according to the present invention;
FIG. 8 is a schematic view of the assembly of the tool roller support assembly of the perforating tool holder of the logging truck of the present invention.
Detailed Description
As shown in fig. 1 to 5, the compaction device for the perforating instrument of the logging engineering truck adopts a modular detachable structure, and comprises a compaction support assembly 1 and a compaction mechanism assembly 2;
the pressing support assembly 1 is a modular structure and comprises a frame 11 and a plurality of pressing support modules 12 which are fixed on the frame 11 and are arranged side by side and/or overlapped.
The frame 11 includes a strip-shaped bottom plate 111, a pair of end brackets 112, and a pair of reinforcing baffles 113; the end brackets 112 are vertical frame structures formed by welding steel plates and symmetrically distributed at two ends of the bottom plate 111; the reinforcing baffle 113 is symmetrically distributed on two sides of the end bracket, the end bracket 112 is welded at two ends of the reinforcing baffle 113, and the reinforcing baffle 113 is made of angle steel in the embodiment.
The pressing support modules 12 are uniformly arranged along the bottom plate 111 of the frame 11 at intervals, and include a front vertical plate 121, a rear vertical plate 122, a connecting reinforcing beam 123, an upper limiting plate 124 and an upper bending flat plate 125; nuts are embedded in the inner surface above the front vertical plate 121, the middle part of the front vertical plate is hollow, and the front vertical plate is fixed by welding a reinforcing baffle 113 on the outer side of the upper part and welding a bottom plate 111 at the bottom; the rear vertical plate 122 is matched with the front vertical plate 121, the middle part of the rear vertical plate is hollow, a supporting hole is arranged above the rear vertical plate, the rear vertical plate is fixed by welding a reinforcing baffle 113 at the outer side of the upper part and welding a bottom plate 111 at the bottom, and the height of the supporting hole is matched with that of the embedded nut; the connecting reinforcing beam 123 is arranged at the lower parts of the front vertical plate 121 and the rear vertical plate 122, two ends of the connecting reinforcing beam are respectively welded at the inner sides of the lower parts of the front vertical plate 121 and the rear vertical plate 122, the upper limiting plate 124 and the connecting reinforcing beam 123 are arranged at the upper parts of the front vertical plate 121 and the rear vertical plate 122 in parallel, and two ends of the connecting reinforcing beam are respectively welded at the inner sides of the upper parts of the front vertical plate 121 and the rear vertical plate 122; the upper bending flat plate 125 is arranged at the upper end, and is welded at the top end of the upper bending flat plate in a right-angle relationship with the front vertical plate 121 and the rear vertical plate 122, and finally a cuboid pressing support module 12 with an internal cavity 120 is formed; every two adjacent pressing support modules 12 and the end support 112 are fixedly connected through an upper connecting plate 114;
according to the requirement, the pressing support modules 12 can be stacked in multiple layers, when stacked up and down, the bottoms of the front vertical plate and the rear vertical plate of the upper layer pressing support module 12 in the adjacent upper and lower sides are welded with the upper bent flat plate of the lower layer pressing support module 12, so as to form a stacked group of pressing support modules, and each two adjacent groups of pressing support modules and the end support 112 are fixedly connected into a whole through the upper connecting plate 114 and the connecting rib 115, so as to finally form the pressing support assembly 1 with a plurality of internal cavities;
the pressing mechanism assembly 2 is a detachable pressing mechanism, is arranged in the inner cavity 120 of the pressing bracket assembly 1, and comprises a liftable pressing mechanism 21, an upper connecting plate 22, a lower pressing plate 23 and a movable supporting pin shaft assembly 24;
the liftable pressing mechanism 21 is positioned between the upper connecting plate 22 and the lower pressing plate 23 and is welded with the upper connecting plate 22 and the lower pressing plate 23 into a whole; in the embodiment, the lifting and pressing mechanism 21 is a jack;
the upper connecting plate 22 is attached to the adjacent surfaces of the upper limiting plate 124 and the rear vertical plate 122 at the same time, so that bidirectional positioning is realized, the length of the upper connecting plate is slightly less than the sum of the length of the inner cavity of the pressing support module 12 and the thickness of the front vertical plate 121 by 1mm, and the width of the upper connecting plate is slightly more than the sum of the width of the liftable pressing mechanism 21 and the diameter of the pin shaft of the two movable supporting pin shaft assemblies 24;
the length of the lower pressing plate 23 is the same as that of the main body of the liftable pressing mechanism 21, and the width of the lower pressing plate is slightly wider than that of the middle part of the main body of the liftable pressing mechanism 21;
the number of the movable supporting pin shaft assemblies 24 is two, and the two movable supporting pin shaft assemblies are composed of a pin shaft 241 and a vertical connecting plate 242, wherein the fixed end of the pin shaft 241 is connected with the vertical connecting plate 242, and the vertical connecting plate 242 is provided with a mounting hole which is matched with the embedded nut of the front vertical plate 121; the free end of the pin shaft 241 extends along the lower plane of the upper connecting plate 22 and is fed into the supporting hole of the rear vertical plate 122, meanwhile, the plane of one side of the vertical connecting plate 242 at the fixed end is attached to the front vertical plate 121, and the effective supporting and limiting of the pressing mechanism assembly 2 are completed through bolts which penetrate through the mounting holes and are fixedly connected with the embedded nuts.
During assembly, the pressing mechanism assembly 2 compressed to the limit position is placed into the internal cavity 120 of each pressing support module 12 of the pressing support assembly 1, so that the upper connecting plate 22 is attached to the adjacent surfaces of the upper limiting plate 124 and the rear vertical plate 122 at the same time, and bidirectional positioning is realized; then, the pin shafts of the two movable supporting pin shaft assemblies 24 are contacted with the lower plane of the upper connecting plate 22, namely the surface welded with the liftable pressing mechanism 21, the pin shafts of the two movable supporting pin shaft assemblies 24 are sent into the supporting holes of the rear vertical plate 122 until the plane of one side of the vertical connecting plate at the other end of the movable supporting pin shaft assembly 24 is attached to the front vertical plate 121, the bolts are fastened and connected with the embedded nuts of the front vertical plate 121 through the corresponding mounting holes, and the effective supporting and limiting of the pressing mechanism assembly 2 are completed.
As shown in fig. 6 and 7, the logging engineering truck of the present invention includes a truck bed 5, and a tool box 6, a perforation instrument 7 and a perforation instrument holder 8 which are arranged on the truck bed 5; the tool box 6 is integrated with a pair of bullet boxes which are arranged on two sides of the rear portion of the carriage 5 in a split mode, the perforating instruments 7 are fixed on the carriage 5 through perforating instrument holders 8, the perforating instrument holders 8 are provided with a pair of tool boxes 6, matched with the tool boxes 6 and located between the bottom of the tool boxes 6 and the bottom plate of the carriage 5, and the tool boxes comprise instrument roller wheel supporting assemblies 3 and the instrument pressing devices.
As shown in fig. 8, the instrument roller support assembly 3 is located in the pressing bracket assembly 1 of the instrument pressing device, and includes a roller shaft 31 and a rubber roller 32.
The instrument pressing device can flexibly adjust the front and back positions of the pressing support assemblies 1 and the number of the pressing mechanism assemblies 2 according to the length and the number of the instruments.
According to the invention, the movable supporting pin shaft assembly is reasonably installed through the modular design of the instrument pressing device and the corresponding hole positions on the front vertical plate 122 and the rear vertical plate 122, the pressing mechanism assembly 2 is firmly fixed between the movable supporting pin shaft assembly and the upper limiting plate 124 of the pressing bracket assembly 1, the spatial three-direction positioning of the pressing mechanism assembly 2 is realized, and then the pressing function of the perforating instrument is realized. Meanwhile, the pressing device can be detached only by detaching the fixing bolt of the vertical connecting plate at the other end of the pressing device movable supporting pin shaft assembly 24, and the maintenance is very convenient.
When the perforating instrument is conveyed into the perforating instrument frame during operation, rollers on solid roller shafts of the instrument frame and the instrument pressing modules which are fixed in the mounting holes of the front vertical plate 122 and the rear vertical plate 122 respectively realize straightness along the in-and-out direction of the instrument, and perforating instruments with different lengths and diameters are effectively supported. The middle shaft of the liftable hold-down mechanism 21 is rotated by using the crank, so that the liftable hold-down mechanism assembly 2 vertically moves downwards. When the lower plane of the lower pressing plate 23 integrated with the liftable pressing mechanism assembly 2 is contacted with a perforation instrument, the crank is continuously rotated, the instrument simultaneously exerts the mutual acting force on the pressing device and the supporting rollers, and the upper connecting plate 22 simultaneously exerts the mutual acting force on the upper limiting plate 124 until the instrument is pressed. After the vehicle arrives at the well site, before taking away the instrument, use the crank to rotate the middle part axle of liftable hold-down mechanism 21, tighten up hold-down mechanism assembly 2, accomplish the use of an instrument closing device.
According to the invention, as the modularized detachable pressing device is adopted in the instrument pressing device, the mechanical pressing device is integrated on the premise of ensuring the strength of the detachable pressing device and the strength of the instrument pressing module without changing the carriage structure of the oil field logging engineering truck, so that the maintenance, the replacement and the repair are facilitated.
Claims (6)
1. The utility model provides a logging engineering vehicle perforation instrument closing device which characterized in that: the pressing device adopts a modularized detachable structure and comprises a pressing bracket assembly and a pressing mechanism assembly;
the pressing support assembly is of a module structure and comprises a frame and a plurality of pressing support modules which are fixed on the frame and are arranged in parallel and/or stacked;
the frame comprises a strip-shaped bottom plate, a pair of end brackets and a pair of reinforcing baffles; the end part supports are of vertical frame structures and are symmetrically distributed at two ends of the bottom plate; the reinforcing baffle plates are symmetrically distributed on two sides of the end part support, and the end part support is welded at two ends of each reinforcing baffle plate;
the pressing support modules are uniformly arranged along the bottom plate of the frame at intervals and comprise a front vertical plate, a rear vertical plate, a connecting reinforcing beam, an upper limiting plate and an upper bending flat plate; nuts are embedded in the inner side of the upper part of the front vertical plate, the middle part of the front vertical plate is hollow, the reinforcing baffle is welded on the outer side of the upper part of the front vertical plate, and the bottom of the front vertical plate is welded on the bottom plate for fixing; the rear vertical plate is matched with the front vertical plate, the middle part of the rear vertical plate is hollow, a supporting hole is formed in the upper part of the rear vertical plate, the reinforcing baffle is welded on the outer side of the upper part of the rear vertical plate, the bottom of the rear vertical plate is welded on the bottom plate for fixing, and the height of the supporting hole is matched with that of the embedded nut; the two ends of the connecting reinforcing beam are respectively welded on the inner sides of the lower parts of the front vertical plate and the rear vertical plate; the upper limiting plate is arranged in parallel with the connecting stiffening beam, and two ends of the upper limiting plate are respectively welded on the inner sides of the upper parts of the front vertical plate and the rear vertical plate; the upper bending flat plate, the front vertical plate and the rear vertical plate are welded at the top ends of the front vertical plate and the rear vertical plate in a right-angle relationship, and finally a cuboid pressing support module with an internal cavity is formed; every two adjacent compaction support modules and the end supports are fixedly connected through upper connecting plates;
the pressing mechanism assembly is a detachable pressing mechanism, is arranged in an internal cavity of the pressing support assembly and comprises a liftable pressing mechanism, an upper connecting plate, a lower pressing plate and a movable supporting pin shaft assembly;
the lifting pressing mechanism is positioned between the upper connecting plate and the lower pressing plate and is welded with the upper connecting plate and the lower pressing plate into a whole;
the upper connecting plate is attached to the adjacent surfaces of the upper limiting plate and the rear vertical plate at the same time, so that bidirectional positioning is realized;
the two movable supporting pin shafts are formed by pin shafts and vertical connecting plates; the fixed end of the pin shaft is provided with a vertical connecting plate, and the vertical connecting plate is provided with a mounting hole which is matched with the embedded nut of the front vertical plate; the free end of the pin shaft extends out of the lower plane of the upper connecting plate and is fed into the supporting hole of the rear vertical plate, meanwhile, the plane perpendicular to one side of the connecting plate is attached to the front vertical plate, the pin shaft penetrates through the mounting hole through a bolt and is fixedly connected with the embedded nut, and effective supporting and limiting of the detachable pressing device are achieved.
2. The logging truck perforation tool packing apparatus of claim 1, wherein: the pressing support modules are stacked, the bottoms of the front vertical plate and the rear vertical plate of the upper layer of the pressing support module in the upper and lower adjacent layers are respectively welded with the upper bent flat plate of the lower layer of the pressing support module, so that a stacked group of pressing support modules is formed, and every two adjacent groups of pressing support modules and the end supports are fixedly connected into a whole through the upper connecting plate and the upper connecting rib.
3. The logging truck perforation tool packing apparatus of claim 1, wherein: the lifting pressing mechanism adopts a jack.
4. The logging truck perforation tool packing apparatus of claim 1, wherein: the length of the upper connecting plate is slightly smaller than the sum of the length of the inner cavity of the pressing support module and the thickness of the front vertical plate by 1 mm;
the length of the lower pressing plate is the same as that of the main body of the liftable pressing mechanism.
5. The utility model provides a logging engineering vehicle perforating instrument frame which characterized in that: the instrument holder comprises an instrument roller support assembly and a logging truck perforation instrument hold down device as claimed in any one of claims 1 to 4.
6. A logging truck comprising a truck bed and a tool box located at the rear of the truck bed, a perforating instrument and the perforating instrument holder of the logging truck of claim 5, said perforating instrument holder being located between the bottom of the tool box and the floor of the truck bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011409955.4A CN112678317B (en) | 2020-12-06 | 2020-12-06 | Logging engineering truck and instrument frame and instrument pressing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011409955.4A CN112678317B (en) | 2020-12-06 | 2020-12-06 | Logging engineering truck and instrument frame and instrument pressing device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112678317A CN112678317A (en) | 2021-04-20 |
| CN112678317B true CN112678317B (en) | 2022-07-05 |
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| CN202011409955.4A Active CN112678317B (en) | 2020-12-06 | 2020-12-06 | Logging engineering truck and instrument frame and instrument pressing device thereof |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102303738B (en) * | 2011-09-21 | 2013-01-02 | 深圳市奥拓电子股份有限公司 | Packing case of LED (light-emitting diode) display unit tank body |
| CN205118623U (en) * | 2015-10-14 | 2016-03-30 | 衢州职业技术学院 | Automatic bearing butter oiling machine |
| KR101731635B1 (en) * | 2015-11-18 | 2017-05-04 | 주식회사 위시테크 | Laminated type rainwater storage tank |
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Effective date of registration: 20230403 Address after: 442000 Shiyan city of Hubei province whitecaps Road No. 51 Patentee after: Dongfeng Special Automobile Co.,Ltd. Address before: No. 80, middle Bailang Road, Shiyan City, Hubei Province, 442013 Patentee before: DONGFENG SPECIAL VEHICLE (SHIYAN) BUS Co.,Ltd. |