CN115122079A - Belly pipe flange bolt dismounting device and method - Google Patents
Belly pipe flange bolt dismounting device and method Download PDFInfo
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- CN115122079A CN115122079A CN202110324321.7A CN202110324321A CN115122079A CN 115122079 A CN115122079 A CN 115122079A CN 202110324321 A CN202110324321 A CN 202110324321A CN 115122079 A CN115122079 A CN 115122079A
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- wrench
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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Abstract
The application provides a belly pipe flange bolt dismounting device and method. The bolt dismounting device comprises an underframe, a lifting device, a wrench adjusting device, a clamping mechanism and a hydraulic wrench. The lifting device is fixed on the bottom frame and comprises a lifting seat. The wrench adjusting device comprises a connecting rod mechanism and a spherical hinge mechanism, wherein one end of the connecting rod mechanism is a fixed end and is connected with the lifting seat, and the other end of the connecting rod mechanism is a free end and is connected with the spherical hinge mechanism. The clamping mechanism is connected with the spherical hinge mechanism and is provided with a mounting arm with a preset length. The hydraulic wrench comprises a driving part, a force arm and a pulling sleeve, the driving part is connected with a hydraulic energy supply device, the force arm is used for being fixedly connected with the mounting arm, a part of arc area of the outer circumferential surface of the pulling sleeve is connected with the force arm, and the wall thickness of a part of area, which is not connected with the force arm, of the pulling sleeve is smaller than the distance between a nut of the flange bolt and the belly pipe. The device is simple to operate, is suitable for a flange bolt dismantling scene with a narrow space, saves manpower and time, and is high in working efficiency.
Description
Technical Field
The application relates to the technical field of mechanical equipment maintenance, in particular to a belly pipe flange bolt dismounting device and method.
Background
In a steel mill, about 40 belly pipes exist in front of each blast furnace, the front belly pipe is connected with an air pipe through flanges, 8 bolts of M48 are arranged at the flange of each belly pipe for fastening, and the flange bolt structure comprises a screw rod, a nut, a gasket and an oblique iron. The bolt gasket is positioned between the belly pipe and the two flanges of the air pipe, the initial thickness of the gasket is 10mm, and the fastening standard is 6 +/-1 mm of the upper and lower gaps of the flange surfaces. In order to ensure that the flange joint does not leak air, bolts are usually fastened at the flange bolts by using a mode of striking a heavy hammer on an inclined iron, the fastening is realized in the mode, the bolt fastening torque is up to 2500NM, and the flange joint is very tight. The replacement period of the air pipe is 90-100 days, and when the air pipe reaches the use period or is damaged, the air pipe needs to be replaced. At the moment, the flange bolts of the belly pipe are quickly and conveniently detached, and the maintenance efficiency is improved, so that the method is very important.
At present, the technical field of fastening and dismantling of high-strength large-size bolts is the situation that bolts are installed and dismantled by using a hydraulic wrench. Although the mode of replacing 'sledgehammer striking' can be replaced by using a hydraulic wrench to remove bolts between a furnace front belly pipe and an air pipe flange, the method also has the following problems: 1. at flange joint, the nut of flange bolt is located the flange below, if use hydraulic wrench to carry out the bolt and demolish, hydraulic wrench's the cover of pulling need be from upwards sheathe the nut from down, but cover spanner weight generally more than 3KG, and manual operation is very inconvenient. 2. Before hydraulic spanner begins to work, need lift hydraulic spanner, prevent that hydraulic spanner from landing from the nut, hydraulic spanner output torque is up to 2500NM, if carry out artifical lift right, the staff has the safety risk.
Therefore, it is necessary to provide a convenient and fast transition on the basis of the existing hydraulic wrench, the operation is simple, and the dismounting device suitable for the scene with narrow space is used for dismounting the flange bolt of the blow-through pipe, so as to solve the problems, save labor and time and improve the working efficiency.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, it is an object of the present application to provide a belly pipe flange bolt removal apparatus that solves the problems of the prior art.
The technical scheme is as follows: a belly pipe flange bolt removal apparatus comprising: a chassis. And the lifting device is fixed on the bottom frame and comprises a lifting seat, and the lifting seat can move in the vertical direction. The wrench adjusting device comprises a connecting rod mechanism and a spherical hinge mechanism, wherein one end of the connecting rod mechanism is a fixed end and is connected with the lifting seat, the other end of the connecting rod mechanism is a free end and is connected with the spherical hinge mechanism, and the spherical hinge mechanism can be driven to freely stretch in the horizontal direction. And the clamping mechanism is connected with the spherical hinge mechanism and is provided with a mounting arm with a preset length, and the mounting arm can perform spherical rotation relative to the free end of the connecting rod mechanism. The hydraulic wrench comprises a driving part, a force arm and a pulling sleeve, wherein the driving part is connected with a hydraulic energy supply device, the force arm is used for being fixedly connected with the mounting arm, a part of arc area of the outer circumferential surface of the pulling sleeve is connected with the force arm, the wall thickness of a part of area, not connected with the force arm, of the pulling sleeve is smaller than the distance between a nut of a flange bolt and a belly pipe, and the output torque of the hydraulic wrench is larger than 2500 NM.
In one embodiment, the fixed end of the link mechanism is connected with the lifting seat through a pin shaft perpendicular to the horizontal plane, and the connecting rods of the link mechanism are positioned in the same horizontal plane and are sequentially connected through a pin shaft perpendicular to the horizontal plane.
In one embodiment, the ball-joint mechanism includes a ball head, a ball head rod, and a ball head support; the ball head and the ball head rod are of an integral structure, and the ball head is arranged in the ball head support; the ball head rod is connected with the clamping mechanism, and the axis of the ball head rod is parallel to the central line of the pulling sleeve; the ball head support is connected with the free end of the connecting rod mechanism.
In one embodiment, the hydraulic power supply device comprises an electric pump and a battery pack, the electric pump is connected with the driving part through an oil inlet pipe and an oil outlet pipe and used for providing a hydraulic pressure source for the hydraulic wrench, and the battery pack is used for providing electric energy for the electric pump.
In one embodiment, the lifting device further comprises a hydraulic pump for driving the lifting device to adjust the height of the lifting seat; when the hydraulic pump pressurizes, the lifting seat ascends, and when the hydraulic pump releases pressure, the lifting seat descends under the action of gravity; the hydraulic pump is provided with a pressurization mechanism for pressurizing the hydraulic pump, and the hydraulic pump is provided with a one-way valve for controlling the hydraulic pump to be in a pressurization or pressure release state.
In one embodiment, the chassis is mounted with universal wheels, the lifting device further comprises a handle for pushing the bolt removing device, and the control switch of the one-way valve is moved to the handle through a long-lead screw structure.
According to another aspect of the application, a method for removing bolts by using a belly pipe flange bolt removing device is further provided, and comprises the following steps: firstly, moving the bolt dismounting device to the connecting position of a blast furnace stokehole belly pipe and an air pipe. And secondly, adjusting the connecting rod mechanism to enable the hydraulic wrench to be located below a nut of the flange bolt. And thirdly, controlling the lifting device to enable the lifting seat to drive the hydraulic wrench to be lifted to the nut. And fourthly, controlling the wrench adjusting device to align the central line of the wrench sleeve with the central line of the bolt, align the inner ring of the wrench sleeve with the outer ring of the nut, and align the part, which is not connected with the force arm, of the wrench sleeve with the area between the nut and the belly pipe. And fifthly, controlling the lifting device and the wrench adjusting device to enable the wrench sleeve to be sleeved with the screw cap. And the sixth step is to start the hydraulic energy supply device, control the hydraulic wrench to work, screw down the nut and remove the flange bolt.
As described above, the present application has the following advantageous effects:
1. the belly pipe cannot generate object striking damage, the transition is convenient and fast, the operation is simple, and the working efficiency and the safety are improved.
2. Can the bearing control hydraulic wrench, liberation manpower is applicable to the narrow and small scene of working space is demolishd to the flange bolt.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram illustrating a belly pipe flange bolt removal device according to an embodiment of the present application;
FIG. 2 is a side view of a schematic diagram of an installation structure of a clamping mechanism and a hydraulic wrench according to an embodiment of the application;
FIG. 3 is a front view of a schematic view of a clamping mechanism and hydraulic wrench mounting arrangement shown in accordance with an embodiment of the present application;
FIG. 4 is a top view of a schematic diagram illustrating a clamping mechanism and hydraulic wrench mounting arrangement according to an embodiment of the present application;
in the figure:
1 underframe 2 lifting device
3 spanner adjusting device 4 fixture
5 Hydraulic wrench 6 drive part
7 arm of force 8 spanner sleeve
9 mounting arm 10 stop
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic structural diagram illustrating a belly pipe flange bolt removal device according to an embodiment of the application. Referring to fig. 1, the belly pipe flange bolt dismantling device comprises an underframe 1, a lifting device 2, a wrench adjusting device 3, a clamping mechanism 4 and a hydraulic wrench 5. The lifting device 2 is fixed on the underframe 1, and the lifting device 2 comprises a lifting seat which can move in the vertical direction. The wrench adjusting device 3 comprises a connecting rod mechanism and a spherical hinge mechanism, wherein one end of the connecting rod mechanism is a fixed end and is connected with the lifting seat, and the other end of the connecting rod mechanism is a free end and is connected with the spherical hinge mechanism, so that the spherical hinge mechanism can be driven to freely stretch in the horizontal direction. The gripper mechanism 4 is connected to a ball joint mechanism which is provided with a mounting arm 9 of a predetermined length, the mounting arm 9 being spherically rotatable relative to the free end of the linkage. The hydraulic wrench 5 comprises a driving part 6, a force arm 7 and a pulling sleeve 8, the driving part 6 is connected with a hydraulic energy supply device, the force arm 7 is used for being fixedly connected with an installation arm 9, a part of circular arc area of the outer circumferential surface of the pulling sleeve 8 is connected with the force arm 7, the wall thickness of a part of area, not connected with the force arm 7, of the pulling sleeve 8 is smaller than the distance between a nut of a flange bolt and a belly pipe, and the output torque of the hydraulic wrench 5 is larger than 2500 NM.
The chassis 1 is used to support the entire flange bolt removal apparatus. The lifting device 2 is fixed on the underframe 1 and can control the lifting adjustment of the hydraulic wrench 5. The connecting rod mechanism is connected with a lifting seat of the lifting device 2 and can control the position of the hydraulic wrench 5 in a horizontal plane, and the spherical hinge mechanism is connected with the free end of the connecting rod mechanism and is used for finely adjusting the space position of the hydraulic wrench 5. The clamping mechanism 4 is connected with the spherical hinge mechanism and directly connected with the hydraulic wrench 5 to bear the weight of the hydraulic wrench 5 and bear the counter torque applied to the hydraulic wrench 5 during working. In the actual construction process, the pulling sleeve 8 of the hydraulic wrench 5 is adjusted through the lifting device 2 and the wrench adjusting device 3, so that the nut of the flange bolt is sleeved on the pulling sleeve 8, then the hydraulic energy supply device is started, the hydraulic wrench 5 works, and the nut of the flange bolt is detached.
This scheme is passed through chassis 1, elevating gear 2, spanner adjusting device 3 and fixture 4 isotructures bearing control hydraulic wrench 5, and artifical indirect operation hydraulic wrench 5 has got rid of hydraulic wrench 5 because of the inconvenient safe risk of too big to the staff formation of operation that weight caused and moment. The bolt dismantling device provided by the scheme is convenient and fast to transition, is simple to operate, and improves the working efficiency and the safety.
In one embodiment, the portion of the arcuate surface of the outer circumferential surface of the trigger sleeve 8 that is connected to the moment arm 7 comprises less than 50% of the outer circumferential surface. The construction space for dismantling the flange bolt is narrow, and in order to facilitate the nut of the flange bolt to be sleeved into the pulling sleeve 8, the connection ratio of the outer circumferential surface of the pulling sleeve 8 and other partial areas and the wall thickness of the pulling sleeve need to be limited so as to avoid the situation that the hydraulic wrench 5 cannot sleeve the nut. The fastening torque of the flange bolt is as high as 2500NM, so the output torque of the hydraulic wrench 5 also has corresponding requirements.
In one embodiment, the cross section of the mounting arm 9 is C-shaped for clamping the force arm 7, and the mounting arm 9 is fixedly connected with the force arm 7 through a bolt. As shown in fig. 2, the mounting arm 7 may be formed by two L-shaped cross-sectional components, and the mounting arm 9 and the arm 7 are fixedly connected by bolts.
The mounting arm 9 of the above embodiment realizes the fixed connection between the clamping mechanism 4 and the hydraulic wrench 5, the fixed connection realized by the bolt is stable and reliable, and the transmission of large torque between the hydraulic wrench 5 and the clamping mechanism 4 can be realized. Meanwhile, the connection between the clamping mechanism 4 and the spherical hinge mechanism can be realized by welding a support on the mounting arm 7 or other modes.
It should be noted that the structure of the mounting arm 9 is only exemplary, and any structure that can realize the fixed connection between the clamping mechanism 4 and the hydraulic wrench 5 falls within the protection scope of the present application.
As shown in fig. 3 and 4, in one embodiment, the clamping mechanism 4 is provided with a raised stop 10 in the direction of the centre line of the wrench sleeve 8 for transmitting the counter torque to which the hydraulic wrench 5 is subjected. When the hydraulic wrench works, counter torque borne by the hydraulic wrench 5 is transmitted to the clamping mechanism 4 and then transmitted to the belly pipe flange through the stop block 10, so that a spherical hinge mechanism and a connecting rod mechanism connected with the clamping mechanism 4 are protected.
In one embodiment, the fixed end of the link mechanism is connected with the lifting seat through a pin shaft perpendicular to the horizontal plane, and all the connecting rods of the link mechanism are positioned in the same horizontal plane and are sequentially connected through the pin shaft perpendicular to the horizontal plane. The link mechanism is simple and reliable, and the free end of the link mechanism can move in the horizontal plane relative to the fixed end through multi-rod connection.
In one embodiment, the ball joint mechanism comprises a ball head, a ball head rod and a ball head support; the ball head and the ball head rod are of an integrated structure; the ball head is arranged in the ball head support; the ball head rod is connected with the clamping mechanism 4, and the axis of the ball head rod is parallel to the central line of a wrench sleeve of the hydraulic wrench 5; the ball head support is connected with the free end of the connecting rod mechanism. The spherical hinge mechanism is a simple mechanical structure and works stably and reliably.
In one embodiment, the hydraulic energizing means comprises an electric pump connected to the drive part 6 via an oil inlet pipe and an oil outlet pipe for providing a hydraulic pressure source to the hydraulic wrench 5, and a battery pack for providing electric power to the electric pump. The adoption of an electric hydraulic pump to power the hydraulic wrench 5 is a common and efficient energy supply mode. In addition, the electric pump and the battery pack can be fixed on the underframe 1 and can also be separated from the underframe; the power supply of the electric pump can be a battery pack, and can also be connected with other power supplies in a plug and socket mode.
In one embodiment, the lifting device 2 further comprises a hydraulic pump for driving the lifting device 2 to adjust the height of the lifting base; when the hydraulic pump pressurizes, the lifting seat rises, and when the hydraulic pump decompresses, the lifting seat falls under the action of gravity; the hydraulic pump is provided with a pressurization mechanism for pressurizing the hydraulic pump, and the hydraulic pump is provided with a one-way valve for controlling the hydraulic pump to be in a pressurization or pressure relief state. The hydraulic pump has a simple and stable working structure, and the height of the hydraulic wrench is controlled and adjusted by the lifting device 2 by using an artificial power hydraulic pump.
In one embodiment, the booster mechanism is a foot-pedal booster mechanism, facilitating control of the lifting device 2.
In one embodiment, the chassis 1 is equipped with universal wheels to facilitate the movement of the bolt removal device.
In one embodiment, the chassis 1 is provided with universal wheels, the lifting device 2 further comprises a handle for pushing the bolt dismounting device, and the control switch of the one-way valve is moved to the handle through the long lead screw structure. The handle conveniently pushes the bolt to remove the device, and the control switch of the one-way valve is adjusted to conveniently control the state of the hydraulic pump.
According to another aspect of the application, a method for removing bolts by using a belly pipe flange bolt removing device is further provided, and comprises the following steps: firstly, moving the bolt dismounting device to the connecting position of a blast furnace stokehole belly pipe and an air pipe. Secondly, the link mechanism is adjusted to position the hydraulic wrench 5 below the nut of the flange bolt. And thirdly, controlling the lifting device 2 to enable the lifting seat to drive the hydraulic wrench 5 to be lifted to the nut. Fourthly, controlling the wrench adjusting device 3 to align the central line of the wrench sleeve 8 with the central line of the bolt, aligning the inner ring of the wrench sleeve 8 with the outer ring of the nut, and aligning the part of the wrench sleeve 8 which is not connected with the force arm 7 with the area between the nut and the belly pipe. And fifthly, controlling the lifting device 2 and the wrench adjusting device 3 to enable the wrench sleeve 3 to be sleeved with a screw cap. And sixthly, starting the hydraulic energy supply device, controlling the hydraulic wrench 5 to work, screwing down the nut, and dismantling the flange bolt.
The method for dismounting the bolt by using the bolt dismounting device is simple and convenient to operate, improves the working efficiency and safety, and has high practical value and practical effect.
In conclusion, the invention provides a belly pipe flange bolt dismounting device and method based on the existing hydraulic wrench, and solves the problems of object striking injury, inconvenient operation, personnel safety, manual supporting and adjusting of the existing hydraulic wrench and the like in the traditional 'sledgehammer striking' mode. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high use value in the field of industrial tools.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A belly pipe flange bolt demolishs device which characterized in that includes:
a chassis;
the lifting device is fixed on the underframe and comprises a lifting seat, and the lifting seat can move in the vertical direction;
the wrench adjusting device comprises a connecting rod mechanism and a spherical hinge mechanism, wherein one end of the connecting rod mechanism is a fixed end and is connected with the lifting seat, and the other end of the connecting rod mechanism is a free end and is connected with the spherical hinge mechanism, so that the spherical hinge mechanism can be driven to freely stretch and retract in the horizontal direction;
the clamping mechanism is connected with the spherical hinge mechanism and is provided with a mounting arm with a preset length, and the mounting arm can rotate in a spherical manner relative to the free end of the connecting rod mechanism;
the hydraulic wrench comprises a driving part, a force arm and a pulling sleeve, wherein the driving part is connected with a hydraulic energy supply device, the force arm is used for being fixedly connected with the mounting arm, a part of arc area of the outer circumferential surface of the pulling sleeve is connected with the force arm, the wall thickness of a part of area, not connected with the force arm, of the pulling sleeve is smaller than the distance between a nut of a flange bolt and a belly pipe, and the output torque of the hydraulic wrench is larger than 2500 NM.
2. The bolt demolition arrangement according to claim 1, wherein the partial arc area of the outer circumferential surface of the wrenching sleeve connected to the moment arm accounts for less than 50% of the outer circumferential surface.
3. The bolt demolition apparatus according to claim 1, wherein the cross-sectional surface of the mounting arm is C-shaped for gripping the moment arm, the mounting arm being fixedly connected with the moment arm by a bolt.
4. The bolt demolition apparatus according to claim 3, wherein the clamping mechanism is provided with a raised stopper in the direction of the wrench sleeve centerline for transmitting a counter torque to which the hydraulic wrench is subjected.
5. The bolt demolishing apparatus of claim 1, wherein the link mechanism fixing end is connected to the lifting base through a pin perpendicular to a horizontal plane, and the links of the link mechanism are located in the same horizontal plane and are sequentially connected through a pin perpendicular to a horizontal plane.
6. The bolt demolition apparatus according to claim 1 wherein the ball-joint mechanism comprises a ball, a ball rod, and a ball mount; the ball head and the ball head rod are of an integral structure, and the ball head is arranged in the ball head support; the ball head rod is connected with the clamping mechanism, and the axis of the ball head rod is parallel to the central line of the pulling sleeve; the ball head support is connected with the free end of the connecting rod mechanism.
7. The bolt demolition apparatus according to claim 1, wherein the hydraulic power supply means includes an electric pump connected to the driving part through an oil inlet pipe and an oil outlet pipe for supplying a hydraulic pressure source to the hydraulic wrench, and a battery pack for supplying electric power to the electric pump.
8. The bolt removing apparatus according to claim 1, wherein the lifting device further comprises a hydraulic pump for driving the lifting device to adjust the height of the lifting base; when the hydraulic pump pressurizes, the lifting seat rises, and when the hydraulic pump releases pressure, the lifting seat falls under the action of gravity; the hydraulic pump is provided with a pressurization mechanism for pressurizing the hydraulic pump, and the hydraulic pump is provided with a one-way valve for controlling the hydraulic pump to be in a pressurization or pressure relief state.
9. The bolt demolition apparatus according to claim 8, wherein the base frame is mounted with universal wheels, the lifting device further comprises a handle for pushing the bolt demolition apparatus, and a control switch of the check valve is moved to the handle through a long lead screw structure.
10. A method of belly pipe flange bolt removal using the bolt removal apparatus according to any one of claims 1 to 9, comprising:
moving the bolt dismounting device to the connecting position of a blast furnace stokehole belly pipe and an air pipe;
adjusting the link mechanism to enable the hydraulic wrench to be located below a nut of the flange bolt;
controlling the lifting device to enable the lifting seat to drive the hydraulic wrench to be lifted to the nut;
controlling the wrench adjusting device to align the central line of the wrench sleeve with the central line of the bolt, align the inner ring of the wrench sleeve with the outer ring of the nut and align the part of the wrench sleeve which is not connected with the force arm with the area between the nut and the belly pipe;
controlling the lifting device and the wrench adjusting device to enable the nut to be sleeved on the wrench sleeve;
and starting the hydraulic energy supply device, controlling the hydraulic wrench to work, screwing off the nut, and dismantling the flange bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110324321.7A CN115122079B (en) | 2021-03-26 | 2021-03-26 | Device and method for dismantling flange bolts of belly pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110324321.7A CN115122079B (en) | 2021-03-26 | 2021-03-26 | Device and method for dismantling flange bolts of belly pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115122079A true CN115122079A (en) | 2022-09-30 |
| CN115122079B CN115122079B (en) | 2023-09-19 |
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ID=83374245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110324321.7A Active CN115122079B (en) | 2021-03-26 | 2021-03-26 | Device and method for dismantling flange bolts of belly pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115122079B (en) |
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| CN206937189U (en) * | 2017-07-20 | 2018-01-30 | 沈群聪 | A kind of Multi-functional socket wrench |
| CN108326541A (en) * | 2018-05-10 | 2018-07-27 | 中车株洲电机有限公司 | A kind of bolts assemblies clamp device |
| CN109093549A (en) * | 2017-06-20 | 2018-12-28 | 中国航发上海商用航空发动机制造有限责任公司 | A kind of device that nut is tightened |
| CN210389016U (en) * | 2019-06-04 | 2020-04-24 | 达力普石油专用管有限公司 | Telescopic universal wind gun socket wrench used in limited space |
| US20210031337A1 (en) * | 2017-12-21 | 2021-02-04 | Hire Torque Limited | Tool for use in places with restricted access |
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2021
- 2021-03-26 CN CN202110324321.7A patent/CN115122079B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287795A (en) * | 1979-11-09 | 1981-09-08 | The Rotor Tool Company | Adjustable blade wrench |
| CN103170941A (en) * | 2011-12-26 | 2013-06-26 | 核动力运行研究所 | Wrench special for nuts of main heat transfer pipe support post of heavy water reactor |
| CN204935510U (en) * | 2015-09-14 | 2016-01-06 | 马鞍山市三江机械有限公司 | A kind of hydraulic spanner with the unbalance loading reaction arm of force |
| CN206509957U (en) * | 2016-12-21 | 2017-09-22 | 济南凯丰市政工程有限公司 | The bent long-armed reinforcing spanner of hydraulic-driven |
| CN109093549A (en) * | 2017-06-20 | 2018-12-28 | 中国航发上海商用航空发动机制造有限责任公司 | A kind of device that nut is tightened |
| CN206937191U (en) * | 2017-07-19 | 2018-01-30 | 河南省煤气(集团)有限责任公司义马气化厂 | A kind of adjustable type hydraulic spanner special stand |
| CN206937189U (en) * | 2017-07-20 | 2018-01-30 | 沈群聪 | A kind of Multi-functional socket wrench |
| CN107350789A (en) * | 2017-08-21 | 2017-11-17 | 安徽特斯艾尔机电设备有限公司 | A kind of clamp system of auto parts bolt screwing machine |
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| CN108326541A (en) * | 2018-05-10 | 2018-07-27 | 中车株洲电机有限公司 | A kind of bolts assemblies clamp device |
| CN210389016U (en) * | 2019-06-04 | 2020-04-24 | 达力普石油专用管有限公司 | Telescopic universal wind gun socket wrench used in limited space |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115122079B (en) | 2023-09-19 |
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