CN214719557U - Steel pipe pit shaping device - Google Patents
Steel pipe pit shaping device Download PDFInfo
- Publication number
- CN214719557U CN214719557U CN202120681132.0U CN202120681132U CN214719557U CN 214719557 U CN214719557 U CN 214719557U CN 202120681132 U CN202120681132 U CN 202120681132U CN 214719557 U CN214719557 U CN 214719557U
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- steel pipe
- lifting
- plate
- cam
- shaping device
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Abstract
The utility model discloses a steel pipe pit shaping device, strike leveling mechanism, horizontal migration including the circulation and go into tub mechanism, lift adjustment mechanism, device support base, steel pipe bracket, spacing fixed bolster, electronic jar, press from both sides tight cushion and steel pipe body. The utility model belongs to the technical field of the steel pipe is restoreed, specifically a steel pipe pit shaping device, strike leveling mechanism through setting up the circulation, horizontal migration income pipe mechanism and lift adjustment mechanism have improved steel pipe pit shaping device's controllability, make steel pipe pit shaping device can level the operation to the pit of optional position in the steel pipe conveniently, steel pipe pit shaping device's application scope has been enlarged, the level of mechanization of steel pipe pit shaping device has been promoted greatly, workman labour intensity has been reduced, accord with current market demand, steel pipe pit shaping device's work efficiency has been improved, steel pipe pit shaping device's degree of automation has been promoted, steel pipe pit shaping device's use experience has been improved.
Description
Technical Field
The utility model belongs to the technical field of the steel pipe is restoreed, specifically indicate a steel pipe pit shaping device.
Background
The steel pipe is one of main production raw materials of urban construction, petroleum and enterprises and public institutions, and the steel pipe inevitably collides in the processes of processing, production, hoisting, transportation and use, so that pits appear to influence the use. The large-aperture steel pipe is relatively easy to repair, and people can enter the steel pipe to repair by using tools such as a jack, a sledge hammer and the like. The small-caliber steel pipe can only repair the pipe end, and cannot be repaired simply by the middle part, and can only be repaired by large-scale special equipment, so that the repairing cost is extremely high, the steel pipe cannot be compensated, and only can be scrapped, and waste is caused. The manual repair of the steel pipe pits is time-consuming and labor-consuming, low in efficiency and high in labor intensity of workers, and only steel pipes with specific diameters can be repaired, so that the application range of the steel pipe pits is not wide enough, and therefore a steel pipe pit shaping device needs to be provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a steel pipe pit shaping device, which improves the adjustability of the steel pipe pit shaping device, enables the steel pipe pit shaping device to conveniently carry out leveling operation on pits at any positions in a steel pipe, enlarges the application range of the steel pipe pit shaping device, greatly improves the mechanization level of the steel pipe pit shaping device, reduces the labor intensity of workers, meets the current market demand, improves the working efficiency of the steel pipe pit shaping device, improves the automation degree of the steel pipe pit shaping device, improves the use experience of the steel pipe pit shaping device, reduces the maintenance cost of the steel pipe pit shaping device, prolongs the service life of the steel pipe pit shaping device, effectively solves the low efficiency of the steel pipe pit shaping device in the current market, and has a complex structure, and the maintenance is inconvenient.
The utility model adopts the following technical scheme: the utility model relates to a steel pipe pit shaping device, strike leveling mechanism, horizontal migration including the circulation and go into tub mechanism, lift adjustment mechanism, device support base, steel pipe bracket, spacing fixed bolster, electronic jar, press from both sides tight cushion and steel pipe body, steel pipe bracket rigid coupling is on the device supports the base, spacing fixed bolster rigid coupling is on the device supports the base, electronic jar rigid coupling is on spacing fixed bolster, press from both sides tight cushion rigid coupling on the output of electronic jar, the steel pipe body is located and is pressed from both sides between tight cushion and the steel pipe bracket, horizontal migration goes into tub mechanism and locates on the device supports the base, lift adjustment mechanism locates horizontal migration and goes into tub mechanism, circulation strikes leveling mechanism and locates on the lift adjustment mechanism.
Further, the circular striking and flattening mechanism comprises a driving cam, a cam rotating shaft, a cam connecting motor, a cam supporting plate, a circular striking bracket, an auxiliary wheel, an auxiliary spring, a sliding connecting rod, a striking and flattening steel head and a connecting rod sliding guide plate, the cam supporting plate is arranged on the lifting adjusting mechanism, the cam rotating shaft is rotationally arranged on the cam supporting plate, the driving cam is arranged on the cam rotating shaft, the cam connecting motor is arranged on the cam rotating shaft, the circular striking support is fixedly connected on the cam supporting plate, the connecting rod sliding guide plate is fixedly connected on the circulating striking support, the sliding connecting rod is arranged on the connecting rod sliding guide plate in a penetrating and sliding manner, the auxiliary wheel is arranged on the sliding connecting rod, one end of the auxiliary spring is arranged on the lower bottom wall of the connecting rod sliding guide plate, the other end of the auxiliary spring is arranged on the auxiliary wheel, and the striking leveling steel head is fixedly connected to the upper bottom wall of the sliding connecting rod.
Further, the horizontal moving pipe feeding mechanism comprises a driving gear, a gear rotating shaft, a gear supporting plate, a gear connecting motor, a transmission guide tooth, a guide tooth clamping operation groove, a horizontal moving sliding plate and a sliding plate guide groove, the sliding plate guide groove is arranged on the device supporting base, the horizontal moving sliding plate is embedded and glidingly arranged on the sliding plate guide groove, the guide tooth clamping running groove is arranged on the side wall of the device supporting base and is communicated with the slide plate guide groove, the gear supporting plate is fixedly connected on the outer side wall of the device supporting base, the gear rotating shaft is rotatably arranged on the gear supporting plate, the driving gear is arranged on a gear rotating shaft, the gear connecting motor is arranged on the gear rotating shaft, the transmission guide teeth are arranged on the horizontal moving sliding plate, the transmission guide teeth penetrate through the guide tooth clamping running grooves and are connected with the driving gear in a clamping mode.
Further, the lifting adjusting mechanism comprises a lifting driving motor, a lifting swing rod, a swing rod connecting shaft, a swing rod supporting plate, a waist-shaped groove, a lifting slider, a slider moving groove, a lifting sliding plate, a lifting guide shell, a horizontal extending plate and a cam rotating groove, wherein the swing rod supporting plate is fixedly connected on the horizontal moving sliding plate, the swing rod connecting shaft is rotatably arranged on the swing rod supporting plate, the lifting swing rod is fixedly connected on the swing rod connecting shaft, the lifting driving motor is arranged on the swing rod connecting shaft, the waist-shaped groove is arranged on the lifting swing rod, the lifting guide shell is fixedly connected on the horizontal moving sliding plate, the lifting sliding plate is slidably arranged in the lifting guide shell, the slider moving groove is arranged on the side wall of the lifting guide shell, one end of the lifting slider is fixedly connected on the lifting sliding plate, the other end of the lifting slider passes through the slider moving groove and is slidably arranged in the waist-shaped groove in an embedded manner, the horizontal stretching plate is fixedly connected to the upper bottom wall of the lifting sliding plate, and the cam rotating groove is formed in the horizontal stretching plate.
Further, the auxiliary wheel and the driving cam are connected in sliding contact.
Furthermore, the cam supporting plate is fixedly connected to the horizontal extending plate.
Further, the driving cam is rotated to pass through the cam rotating groove.
Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: the steel pipe pit shaping device improves the adjustability of the steel pipe pit shaping device by arranging the circulating striking and leveling mechanism, the horizontal moving pipe feeding mechanism and the lifting adjusting mechanism, so that the steel pipe pit shaping device can conveniently and quickly level pits at any positions in a steel pipe, the application range of the steel pipe pit shaping device is expanded, the mechanization level of the steel pipe pit shaping device is greatly improved, the labor intensity of workers is reduced, the current market demand is met, the working efficiency of the steel pipe pit shaping device is improved, the automation degree of the steel pipe pit shaping device is improved, the use experience of the steel pipe pit shaping device is improved, the maintenance cost of the steel pipe pit shaping device is reduced, the service life of the steel pipe pit shaping device is prolonged, the problems of low efficiency and complex structure of the steel pipe pit shaping device in the current market are effectively solved, and the maintenance is inconvenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the steel pipe pit shaping device of the present invention;
FIG. 2 is a cross-sectional view of the steel pipe pit shaping device of the present invention;
fig. 3 is a partially enlarged view of a portion a of fig. 1;
fig. 4 is a partially enlarged view of a portion B of fig. 1;
fig. 5 is a partially enlarged view of a portion C of fig. 2.
Wherein, 1, a circulating striking and leveling mechanism, 2, a horizontal moving pipe feeding mechanism, 3, a lifting adjusting mechanism, 4, a device supporting base, 5, a steel pipe bracket, 6, a limiting fixed bracket, 7, an electric cylinder, 8, a clamping cushion, 9, a steel pipe body, 10, a driving cam, 11, a cam rotating shaft, 12, a cam connecting motor, 13, a cam supporting plate, 14, a circulating striking bracket, 15, an auxiliary wheel, 16, an auxiliary spring, 17, a sliding connecting rod, 18, a striking and leveling steel head, 19, a connecting rod sliding guide plate, 20, a driving gear, 21, a gear rotating shaft, 22, a gear supporting plate, 23, a gear connecting motor, 24, a transmission guide tooth, 25, a guide tooth clamping and rotating groove, 26, a horizontal moving sliding plate, 27, a sliding plate guide groove, 28, a lifting driving motor, 29, a lifting swing rod, 30, a swing rod, 31 and a swing rod supporting plate, 32. a waist-shaped groove 33, a lifting slide block 34, a slide block moving groove 35, a lifting slide plate 36, a lifting guide shell 37, a horizontal extension plate 38 and a cam rotating groove.
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
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 some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figures 1-5, the steel pipe pit shaping device of the utility model comprises a circular striking and flattening mechanism 1, a horizontal moving pipe-entering mechanism 2, a lifting adjusting mechanism 3, a device supporting base 4, a steel pipe bracket 5, a limiting fixed bracket 6, an electric cylinder 7, a clamping soft cushion 8 and a steel pipe body 9, the steel pipe bracket 5 is fixedly connected on the device supporting base 4, the limit fixing bracket 6 is fixedly connected on the device supporting base 4, the electric cylinder 7 is fixedly connected on the limit fixing bracket 6, the clamping soft cushion 8 is fixedly connected on the output end of the electric cylinder 7, the steel pipe body 9 is arranged between the clamping cushion 8 and the steel pipe bracket 5, the horizontal moving pipe-in mechanism 2 is arranged on the device supporting base 4, the lifting adjusting mechanism 3 is arranged on the horizontal moving pipe feeding mechanism 2, and the circulating striking leveling mechanism 1 is arranged on the lifting adjusting mechanism 3.
The circulating striking leveling mechanism 1 comprises a driving cam 10, a cam rotating shaft 11, a cam connecting motor 12, a cam supporting plate 13, a circulating striking support 14, an auxiliary wheel 15, an auxiliary spring 16, a sliding connecting rod 17, a striking leveling steel head 18 and a connecting rod sliding guide plate 19, wherein the cam supporting plate 13 is arranged on the lifting adjusting mechanism 3, the cam rotating shaft 11 is rotatably arranged on the cam supporting plate 13, the driving cam 10 is arranged on the cam rotating shaft 11, the cam connecting motor 12 is arranged on the cam rotating shaft 11, the circulating striking support 14 is fixedly connected on the cam supporting plate 13, the connecting rod sliding guide plate 19 is fixedly connected on the circulating striking support 14, the sliding connecting rod 17 is arranged on the connecting rod sliding guide plate 19 in a penetrating and sliding manner, the auxiliary wheel 15 is arranged on the sliding connecting rod 17, and one end of the auxiliary spring 16 is arranged on the lower bottom wall of the connecting rod sliding guide plate 19, the other end of the auxiliary spring 16 is arranged on the auxiliary wheel 15, and the striking leveling steel head 18 is fixedly connected to the upper bottom wall of the sliding connecting rod 17.
The horizontal movement pipe feeding mechanism 2 comprises a driving gear 20, a gear rotating shaft 21, a gear supporting plate 22, a gear connecting motor 23, transmission guide teeth 24, a guide tooth clamping operation groove 25, a horizontal movement sliding plate 26 and a sliding plate guide groove 27, wherein the sliding plate guide groove 27 is arranged on the device supporting base 4, the horizontal movement sliding plate 26 is embedded and slidably arranged on the sliding plate guide groove 27, the guide tooth clamping operation groove 25 is arranged on the side wall of the device supporting base 4, the guide tooth clamping operation groove 25 is communicated with the sliding plate guide groove 27, the gear supporting plate 22 is fixedly connected on the outer side wall of the device supporting base 4, the gear rotating shaft 21 is rotatably arranged on the gear supporting plate 22, the driving gear 20 is arranged on the gear rotating shaft 21, the gear connecting motor 23 is arranged on the gear rotating shaft 21, and the transmission guide teeth 24 are arranged on the horizontal movement sliding plate 26, the transmission guide teeth 24 pass through the guide tooth engagement running grooves 25 and are in engagement connection with the driving gear 20.
The lifting adjusting mechanism 3 comprises a lifting driving motor 28, a lifting swing rod 29, a swing rod connecting shaft 30, a swing rod supporting plate 31, a waist-shaped groove 32, a lifting slide block 33, a slide block moving groove 34, a lifting slide plate 35, a lifting guide shell 36, a horizontal extending plate 37 and a cam rotating groove 38, wherein the swing rod supporting plate 31 is fixedly connected to the horizontal moving slide plate 26, the swing rod connecting shaft 30 is rotatably arranged on the swing rod supporting plate 31, the lifting swing rod 29 is fixedly connected to the swing rod connecting shaft 30, the lifting driving motor 28 is arranged on the swing rod connecting shaft 30, the waist-shaped groove 32 is arranged on the lifting swing rod 29, the lifting guide shell 36 is fixedly connected to the horizontal moving slide plate 26, the lifting slide plate 35 is slidably arranged in the lifting guide shell 36, the slide block moving groove 34 is arranged on the side wall of the lifting guide shell 36, and one end of the lifting slide block 33 is fixedly connected to the lifting slide plate 35, the other end of the lifting slide block 33 passes through the slide block moving groove 34 and is embedded and slidably arranged in the waist-shaped groove 32, the horizontal extending plate 37 is fixedly connected to the upper bottom wall of the lifting slide plate 35, and the cam rotating groove 38 is arranged on the horizontal extending plate 37.
The auxiliary wheel 15 is connected with the driving cam 10 in a sliding contact manner.
The cam support plate 13 is fixedly attached to the horizontal access plate 37.
The drive cam 10 rotates through the cam rotation slot 38.
When the device is used, a user firstly moves the device to the side of a steel pipe body 9 needing to be subjected to pit shaping, then the steel pipe body 9 is placed on a steel pipe bracket 5, the electric cylinder 7 is started, the output end of the electric cylinder 7 is adjusted until the clamping cushion 8 is enabled to abut against the steel pipe body 9, at the moment, the steel pipe body 9 is fixed, then the gear connection motor 23 is started, then the gear rotating shaft 21 rotates, the driving gear 20 rotates, then the horizontal moving sliding plate 26 is driven by the transmission guide teeth 24 to horizontally slide along the sliding plate guide groove 27, then the lifting adjusting mechanism 3 is driven to synchronously move, then the horizontal extending plate 37 drives the circular striking and leveling mechanism 1 to move, at the moment, the lifting driving motor 28 is started, then the connecting shaft oscillating bar 30 rotates, the lifting oscillating bar 29 rotates, and then the lifting sliding block 33 is driven by the lifting oscillating bar 29 to slide along the waist-shaped groove 32, at this time, the lifting slide block 33 drives the lifting slide plate 35 to perform lifting movement in the lifting guide shell 36, so that the horizontal extension plate 37 is lifted, the gear connection motor 23 and the lifting drive motor 28 are continuously adjusted, the horizontal extension plate 37 drives the position of the circular striking leveling mechanism 1 to be adjusted until the circular striking leveling mechanism 1 enters the steel pipe body 9 and the striking leveling steel head 18 is aligned with a protrusion corresponding to a concave pit in the steel pipe body 9, at this time, the gear connection motor 23 and the lifting drive motor 28 are closed, then the cam connection motor 12 is started to rotate the cam rotating shaft 11, so that the drive cam 10 rotates, and due to the elastic action of the auxiliary spring 16, the auxiliary wheel 15 is always in sliding fit with the drive cam 10, so that the rotating drive cam 10 makes the auxiliary wheel 15 reciprocate to lift, so as to drive the sliding connecting rod 17 to reciprocate to lift and slide in the connecting rod sliding guide plate 19, so make strike and level 18 constantly striking steel pipe inner wall's of steel head protruding department, flatten the arch gradually, reached convenient steel pipe pit shaping effect, improved steel pipe pit shaping device's controllability, make steel pipe pit shaping device can level the operation to the pit of optional position in the steel pipe conveniently, enlarged steel pipe pit shaping device's application scope, promoted steel pipe pit shaping device's mechanization level greatly, reduced workman labour intensity, accord with current market demand, it is above that the utility model discloses holistic work flow, repeat this step when using next time can.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (7)
1. The utility model provides a steel pipe pit shaping device which characterized in that: strike mechanism, elevating adjustment mechanism, device including the circulation and go into tub mechanism, horizontal migration and support base, steel pipe bracket, spacing fixed bolster, electronic jar, press from both sides tight cushion and steel pipe body, steel pipe bracket rigid coupling is on the device supports the base, spacing fixed bolster rigid coupling is on the device supports the base, electronic jar rigid coupling is on spacing fixed bolster, press from both sides tight cushion rigid coupling on the output of electronic jar, the steel pipe body is located and is pressed from both sides between tight cushion and the steel pipe bracket, horizontal migration goes into tub mechanism and locates on the device supports the base, elevating adjustment mechanism locates on horizontal migration goes into tub mechanism, the circulation strikes leveling mechanism and locates on the elevating adjustment mechanism.
2. The steel pipe pit shaping device according to claim 1, wherein: the circular striking flattening mechanism comprises a driving cam, a cam rotating shaft, a cam connecting motor, a cam supporting plate, a circular striking bracket, an auxiliary wheel, an auxiliary spring, a sliding connecting rod, a striking flattening steel head and a connecting rod sliding guide plate, the cam supporting plate is arranged on the lifting adjusting mechanism, the cam rotating shaft is rotationally arranged on the cam supporting plate, the driving cam is arranged on the cam rotating shaft, the cam connecting motor is arranged on the cam rotating shaft, the circular striking support is fixedly connected on the cam supporting plate, the connecting rod sliding guide plate is fixedly connected on the circulating striking support, the sliding connecting rod is arranged on the connecting rod sliding guide plate in a penetrating and sliding manner, the auxiliary wheel is arranged on the sliding connecting rod, one end of the auxiliary spring is arranged on the lower bottom wall of the connecting rod sliding guide plate, the other end of the auxiliary spring is arranged on the auxiliary wheel, and the striking leveling steel head is fixedly connected to the upper bottom wall of the sliding connecting rod.
3. The steel pipe pit shaping device according to claim 2, wherein: the horizontal moving pipe feeding mechanism comprises a driving gear, a gear rotating shaft, a gear supporting plate, a gear connecting motor, transmission guide teeth, a guide tooth clamping running groove, a horizontal moving sliding plate and a sliding plate guide groove, the sliding plate guide groove is arranged on the device supporting base, the horizontal moving sliding plate is embedded and glidingly arranged on the sliding plate guide groove, the guide tooth clamping running groove is arranged on the side wall of the device supporting base and is communicated with the slide plate guide groove, the gear supporting plate is fixedly connected on the outer side wall of the device supporting base, the gear rotating shaft is rotatably arranged on the gear supporting plate, the driving gear is arranged on a gear rotating shaft, the gear connecting motor is arranged on the gear rotating shaft, the transmission guide teeth are arranged on the horizontal moving sliding plate, the transmission guide teeth penetrate through the guide tooth clamping running grooves and are connected with the driving gear in a clamping mode.
4. The steel pipe pit shaping device according to claim 3, wherein: the lifting adjusting mechanism comprises a lifting driving motor, a lifting swing rod, a swing rod connecting shaft, a swing rod supporting plate, a waist-shaped groove, a lifting slider, a slider moving groove, a lifting sliding plate, a lifting guide shell, a horizontal extension plate and a cam rotating groove, wherein the swing rod supporting plate is fixedly connected to the horizontal movement sliding plate, the swing rod connecting shaft is rotatably arranged on the swing rod supporting plate, the lifting swing rod is fixedly connected to the swing rod connecting shaft, the lifting driving motor is arranged on the swing rod connecting shaft, the waist-shaped groove is arranged on the lifting swing rod, the lifting guide shell is fixedly connected to the horizontal movement sliding plate, the lifting sliding plate is slidably arranged in the lifting guide shell, the slider moving groove is arranged on the side wall of the lifting guide shell, one end of the lifting slider is fixedly connected to the lifting sliding plate, and the other end of the lifting slider passes through the slider moving groove and is slidably arranged in the waist-shaped groove in an embedded manner, the horizontal stretching plate is fixedly connected to the upper bottom wall of the lifting sliding plate, and the cam rotating groove is formed in the horizontal stretching plate.
5. The steel pipe pit shaping device according to claim 4, wherein: the auxiliary wheel is connected with the driving cam in a sliding contact mode.
6. The steel pipe pit shaping device according to claim 5, wherein: the cam supporting plate is fixedly connected to the horizontal extending plate.
7. The steel pipe pit shaping device according to claim 6, wherein: the driving cam is rotated to pass through the cam rotating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120681132.0U CN214719557U (en) | 2021-04-02 | 2021-04-02 | Steel pipe pit shaping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120681132.0U CN214719557U (en) | 2021-04-02 | 2021-04-02 | Steel pipe pit shaping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214719557U true CN214719557U (en) | 2021-11-16 |
Family
ID=78599862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120681132.0U Expired - Fee Related CN214719557U (en) | 2021-04-02 | 2021-04-02 | Steel pipe pit shaping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214719557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921599A (en) * | 2023-02-20 | 2023-04-07 | 山东高原油气装备有限公司 | Pit falling repairing machine for petroleum casing pipe |
-
2021
- 2021-04-02 CN CN202120681132.0U patent/CN214719557U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921599A (en) * | 2023-02-20 | 2023-04-07 | 山东高原油气装备有限公司 | Pit falling repairing machine for petroleum casing pipe |
| CN115921599B (en) * | 2023-02-20 | 2023-07-21 | 山东高原油气装备有限公司 | A fall hole repairing machine for petroleum casing pipe |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211116 |