CN115122079B - Device and method for dismantling flange bolts of belly pipe - Google Patents
Device and method for dismantling flange bolts of belly pipe Download PDFInfo
- Publication number
- CN115122079B CN115122079B CN202110324321.7A CN202110324321A CN115122079B CN 115122079 B CN115122079 B CN 115122079B CN 202110324321 A CN202110324321 A CN 202110324321A CN 115122079 B CN115122079 B CN 115122079B
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- hydraulic
- spanner
- wrench
- connecting rod
- bolt
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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
Abstract
The application provides a belly pipe flange bolt dismantling device and a belly pipe flange bolt dismantling method. The bolt removing device comprises a chassis, a lifting device, a spanner adjusting device, a clamping mechanism and a hydraulic spanner. The lifting device is fixed on the underframe and comprises a lifting seat. The spanner 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 wrench sleeve, wherein the driving part is connected with a hydraulic energy supply device, the force arm is fixedly connected with a mounting arm, a part of arc area on the outer circumferential surface of the wrench 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 wrench sleeve is smaller than the distance between a nut of a flange bolt and a 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 maintenance of mechanical equipment, in particular to a belly pipe flange bolt dismantling device and method.
Background
In a steel mill, about 40 belly pipes exist in front of each blast furnace, the front belly pipes are connected with the air pipes through flanges, 8M 48 bolts are arranged at the flange of each belly pipe for fastening, and the flange bolt structure comprises a screw rod, a screw cap, a gasket and a diagonal iron. The bolt gasket is positioned between the two flanges of the belly pipe and the air pipe, the initial thickness of the gasket is 10mm, and the fastening standard is that the upper and lower gaps of the flange surfaces are 6+/-1 mm. In order to ensure that the flange connection is not leaked, the flange bolt is usually required to be fastened by using a large hammering and diagonal iron hammering mode, the fastening is realized in the mode, the fastening torque of the bolt is up to 2500NM, and the flange connection is very tight. The air pipe replacement period is 90-100 days, and when the air pipe reaches the service period or is damaged, the air pipe needs to be replaced. At this time, it is very important to dismantle the flange bolts of the belly pipe rapidly and conveniently and to improve the maintenance efficiency.
At present, the technical field of fastening and dismantling of high-strength large-size bolts is provided with a hydraulic spanner for installing and dismantling the bolts. The hydraulic wrench is used for detaching the stokehold belly pipe and the blast pipe flange bolt, and the hydraulic wrench can replace a mode of 'large hammer striking', but the hydraulic wrench also has some problems: 1. at the flange connection, the nut of the flange bolt is positioned below the flange, if the hydraulic wrench is used for detaching the bolt, the wrench sleeve of the hydraulic wrench is required to be sleeved with the nut from bottom to top, but the weight of the sleeve wrench is generally more than 3KG, and the manual operation is very inconvenient. 2. Before the hydraulic spanner starts working, the hydraulic spanner needs to be lifted to prevent the hydraulic spanner from sliding off the nut, the output torque of the hydraulic spanner is up to 2500NM, and if manual lifting is carried out, the safety risk exists for staff.
Therefore, it is necessary to provide a convenient and fast transfer on the basis of the existing hydraulic wrench, the operation is simple, the dismantling device suitable for the narrow and small scene in space is used for dismantling the belly pipe flange bolt, so as to solve the above problems, save manpower and time, and improve the working efficiency.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present application is to provide a belly pipe flange bolt removal device for solving the problems of the prior art.
The application adopts the following technical scheme: a belly pipe flange bolt removal apparatus comprising: a chassis. The lifting device is fixed on the underframe and comprises a lifting seat which can move in the vertical direction. The spanner 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. 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 wrench sleeve, wherein the driving part is connected with a hydraulic energy supply device, the force arm is fixedly connected with the mounting arm, a part of arc area on the outer circumferential surface of the wrench sleeve is connected with the force arm, the wall thickness of a part of area, which is not connected with the force arm, of the wrench 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 2500NM.
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 links of the link mechanism are positioned in the same horizontal plane and are sequentially connected through the pin shaft perpendicular to the horizontal plane.
In one embodiment, the ball pivot mechanism comprises a ball head, a ball head stem, and a ball head support; the ball head and the ball head rod are of an integrated 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 center line of the spanner 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, wherein the electric pump is connected with the driving part through an oil inlet pipe and an oil outlet pipe and is used for providing a hydraulic 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 is pressurized, the lifting seat ascends, and when the hydraulic pump is depressurized, the lifting seat descends under the action of gravity; the hydraulic pump is provided with a pressurizing 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 pressurizing or pressure releasing state.
In one embodiment, the chassis is mounted with a universal wheel, 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 screw rod structure.
According to another aspect of the present application, there is also provided a method for bolt removal by a belly pipe flange bolt removal apparatus, including: and firstly, moving the bolt removing device to a position where the belly pipe and the air pipe are connected in front of the blast furnace. And secondly, adjusting the connecting rod mechanism to enable the hydraulic wrench to be positioned below the nut of the flange bolt. And thirdly, controlling the lifting device to enable the lifting seat to drive the hydraulic wrench to lift to the nut. And fourthly, controlling the spanner adjusting device to align the center line of the spanner sleeve with the center line of the bolt, align the inner ring of the spanner sleeve with the outer ring of the nut, and align the connecting part of the spanner sleeve and the moment arm with the area between the nut and the belly pipe. And fifthly, controlling the lifting device and the spanner adjusting device to enable the spanner to be sleeved with the nut. And sixthly, starting the hydraulic energy supply device, controlling the hydraulic wrench to work, unscrewing the nuts, and removing the flange bolts.
As described above, the present application has the following advantageous effects:
1. the blow-down pipe can not be hit by objects, the transition is convenient and quick, the operation is simple, and the working efficiency and the safety are improved.
2. Can support control hydraulic spanner, liberation manpower is applicable to flange bolt and demolishs the narrow and small scene of working space.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a belly pipe flange bolt removal apparatus according to an embodiment of the present application;
FIG. 2 is a schematic view of a clamping mechanism and hydraulic wrench mounting structure according to an embodiment of the present application;
FIG. 3 is a front view of a schematic diagram of a clamping mechanism and hydraulic wrench mounting structure according to an embodiment of the present application;
FIG. 4 is a top view of a schematic diagram of a clamping mechanism and hydraulic wrench mounting structure according to an embodiment of the present application;
in the figure:
1. lifting device for underframe 2
3. Clamping mechanism of spanner adjusting device 4
5. Hydraulic spanner 6 driving part
7. Arm 8 spanner sleeve
9. Mounting arm 10 stop
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Fig. 1 is a schematic structural view of a belly pipe flange bolt removal apparatus according to an embodiment of the present application. Referring to fig. 1, the belly pipe flange bolt removal apparatus includes a chassis 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 spanner 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 and retract in the horizontal direction. The clamping mechanism 4 is connected to a spherical hinge mechanism, which is provided with a mounting arm 9 having a predetermined length, the mounting arm 9 being spherically rotatable relative to the free end of the link mechanism. The hydraulic wrench 5 comprises a driving part 6, a force arm 7 and a wrench sleeve 8, wherein the driving part 6 is connected with a hydraulic energy supply device, the force arm 7 is fixedly connected with a mounting arm 9, a part of circular arc area on the outer circumferential surface of the wrench sleeve 8 is connected with the force arm 7, the wall thickness of a part of area of the wrench sleeve 8 which is not connected with the force arm 7 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 2500NM.
The chassis 1 is used for supporting the whole flange bolt dismantling device. 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 the lifting seat of the lifting device 2, the position of the hydraulic wrench 5 in the horizontal plane can be controlled, and the spherical hinge mechanism is connected with the free end of the connecting rod mechanism and used for fine-tuning the spatial position of the hydraulic wrench 5. The clamping mechanism 4 is connected with the spherical hinge mechanism and is directly connected with the hydraulic wrench 5, so as to support the weight of the hydraulic wrench 5 and bear the counter moment applied to the hydraulic wrench 5 during working. In the actual construction process, the spanner sleeve 8 of the hydraulic spanner 5 is adjusted through the lifting device 2 and the spanner adjusting device 3, the spanner sleeve 8 is sleeved with the nuts of the flange bolts, then the hydraulic energy supply device is started, the hydraulic spanner 5 works, and the nuts of the flange bolts are detached.
According to the scheme, the hydraulic wrench 5 is controlled through the underframe 1, the lifting device 2, the wrench adjusting device 3, the clamping mechanism 4 and other structural supports, the hydraulic wrench 5 is operated manually and indirectly, and the safety risk of the hydraulic wrench 5, which is formed by the inconvenient operation and overlarge moment caused by weight, to workers is eliminated. The bolt demolishing device that this scheme provided transitions convenient and fast, easy operation has improved work efficiency and security.
In one embodiment, the proportion of the partial arc of the outer circumferential surface of the spanner sleeve 8 connected to the arm 7 is less than 50% of the outer circumferential surface. The construction space for the flange bolt dismantling operation is narrow, and in order to facilitate the nut of the flange bolt to be sleeved into the spanner sleeve 8, a limit needs to be made on the connection proportion of the outer circumferential surface of the spanner sleeve 8 and other part areas and the thickness of the spanner sleeve wall so as to avoid that the hydraulic spanner 5 cannot be sleeved with the nut. The fastening torque of the flange bolts is up to 2500NM, so that 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 and is used for clamping the arm 7, and the mounting arm 9 is fixedly connected with the arm 7 through bolts. As shown in fig. 2, the mounting arm 7 may be formed of two L-shaped cross-section components, and the mounting arm 9 and the arm 7 may be fixedly connected by bolts.
The mounting arm 9 of the embodiment realizes the fixed connection between the clamping mechanism 4 and the hydraulic wrench 5, the fixed connection realized by the bolts is stable and reliable, and the transmission of large force distance between the hydraulic wrench 5 and the clamping mechanism 4 can be realized. The connection of the clamping mechanism 4 to the spherical hinge mechanism can be achieved by welding a support or other means on the mounting arm 7.
It should be noted that the structure of the mounting arm 9 is only exemplary, and any structure capable of realizing the fixed connection between the clamping mechanism 4 and the hydraulic wrench 5 falls within the 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 spanner sleeve 8 for transmitting the counter moment to which the hydraulic spanner 5 is subjected. During operation, the counter moment received 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 as to protect the spherical hinge mechanism and the connecting rod mechanism connected with the clamping mechanism 4.
In one embodiment, the fixed end of the link mechanism is connected with the lifting seat through a pin shaft vertical to the horizontal plane, and the links of the link mechanism are positioned in the same horizontal plane and are sequentially connected through the pin shaft vertical to the horizontal plane. The connecting rod mechanism is simple and reliable, and the free end of the connecting rod mechanism can move in the horizontal plane relative to the fixed end through the connection of a plurality of rods.
In one embodiment, the ball pivot mechanism comprises a ball head, a ball head stem, 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 center line of the 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 of a simple mechanical structure and works stably and reliably.
In one embodiment, the hydraulic power supply means comprises an electric pump connected to the driving part 6 through an oil inlet pipe and an oil outlet pipe for supplying a hydraulic power source to the hydraulic wrench 5, and a battery pack for supplying electric power to the electric pump. The use of an electric hydraulic pump to power the hydraulic wrench 5 is a common and efficient way of supplying energy. In addition, the electric pump and the battery pack can be fixed on the underframe 1 or separated from the underframe; the power supply of the electric pump can be a battery pack, or can be connected with other power supplies in a plug-socket mode.
In one embodiment, the lifting device 2 further comprises a hydraulic pump for driving the lifting device 2 and adjusting the height of the lifting seat; when the hydraulic pump is pressurized, the lifting seat rises, and when the hydraulic pump is depressurized, the lifting seat descends under the action of gravity; the hydraulic pump is provided with a pressurizing 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 pressurizing or pressure releasing state. The hydraulic pump has a simple and stable working structure, and the height of the hydraulic wrench is controlled and regulated by the lifting device 2 by using the manual hydraulic pump.
In one embodiment, the pressurizing mechanism is a foot-operated pressurizing mechanism, which facilitates control of the lifting device 2.
In one embodiment, the chassis 1 is fitted with universal wheels to facilitate movement of the bolt removal device.
In one embodiment, the chassis 1 is fitted with universal wheels, the lifting device 2 further comprises a handle for pushing the bolt removing device, and the control switch of the one-way valve is moved to the handle by the long screw structure. The handle is convenient to push the bolt to dismantle the device, and the control switch of the one-way valve is convenient to adjust and control the state of the hydraulic pump.
According to another aspect of the present application, there is also provided a method for bolt removal by a belly pipe flange bolt removal apparatus, including: and firstly, moving the bolt removing device to the connection position of the belly pipe and the air pipe in front of the blast furnace. And secondly, adjusting the link mechanism to enable the hydraulic wrench 5 to be positioned below the nuts of the flange bolts. And thirdly, controlling the lifting device 2 to enable the lifting seat to drive the hydraulic wrench 5 to lift to the nut. And fourthly, controlling the spanner adjusting device 3 to align the center line of the spanner sleeve 8 with the center line of the bolt, align the inner ring of the spanner sleeve 8 with the outer ring of the nut, and align the connecting part of the spanner sleeve 8 and the moment arm 7 with the area between the nut and the belly pipe. And fifthly, controlling the lifting device 2 and the spanner adjusting device 3 to enable the spanner sleeve 3 to be sleeved with the nuts. And a sixth step of starting the hydraulic energy supply device, controlling the hydraulic wrench 5 to work, unscrewing the nuts and removing the flange bolts.
The bolt dismantling device is used for dismantling the bolt, is simple and convenient to operate, improves working efficiency and safety, and has high practical value and practical effect.
In summary, the application provides a device and a method for detaching the flange bolt of the belly pipe on the basis of the existing hydraulic wrench, and solves the problems of object striking damage, inconvenient operation, personnel safety, manual supporting adjustment of the existing hydraulic wrench and the like in the traditional 'large hammer striking' mode. Therefore, the application 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 of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (4)
1. The utility model provides 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 which can move in the vertical direction;
the spanner 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 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 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 wrench sleeve, wherein the driving part is connected with a hydraulic energy supply device, the force arm is fixedly connected with the mounting arm, a part of circular arc area on the outer circumferential surface of the wrench sleeve is connected with the force arm, the wall thickness of a part of area, which is not connected with the force arm, of the wrench 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 2500NM;
the proportion of the partial arc area of the outer circumferential surface of the spanner sleeve connected with the force arm to the outer circumferential surface is less than 50%;
the section surface of the mounting arm is C-shaped and is used for clamping the force arm, and the mounting arm is fixedly connected with the force arm through a bolt;
the clamping mechanism is provided with a raised stop block in the direction of the center line of the spanner sleeve and is used for transmitting the counter moment born by the hydraulic spanner;
the fixed end of the connecting rod mechanism is connected with the lifting seat through a pin shaft vertical to the horizontal plane, and all connecting rods of the connecting rod mechanism are positioned in the same horizontal plane and are sequentially connected through the pin shaft vertical to the horizontal plane;
the ball hinge mechanism comprises a ball head, a ball rod and a ball head support; the ball head and the ball head rod are of an integrated 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 center line of the spanner sleeve; the ball head support is connected with the free end of the connecting rod mechanism;
the lifting device further comprises a hydraulic pump, wherein the hydraulic pump is used for driving the lifting device and adjusting the height of the lifting seat; when the hydraulic pump is pressurized, the lifting seat ascends, and when the hydraulic pump is depressurized, the lifting seat descends under the action of gravity; the hydraulic pump is provided with a pressurizing 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 pressurizing or pressure releasing state.
2. The bolt removing apparatus according to claim 1, wherein the hydraulic power supply means includes an electric pump connected to the driving portion through an oil inlet pipe and an oil outlet pipe for supplying a hydraulic power source to the hydraulic wrench, and a battery pack for supplying electric power to the electric pump.
3. The bolt removing apparatus according to claim 1, wherein the chassis is mounted with a universal wheel, the lifting apparatus further comprises a handle for pushing the bolt removing apparatus, and the control switch of the one-way valve is moved to the handle by a long screw structure.
4. A blowpipe flange bolt removal method using the bolt removal apparatus according to any one of claims 1 to 3, comprising:
moving the bolt removing device to the connection position of the belly pipe and the air pipe in front of the blast furnace;
adjusting the connecting rod mechanism to enable the hydraulic wrench to be positioned below a nut of the flange bolt;
controlling the lifting device to enable the lifting seat to drive the hydraulic wrench to rise to the nut;
controlling the spanner adjusting device to align the spanner sleeve center line with the bolt center line, align the spanner sleeve inner ring with the nut outer ring, and align the spanner sleeve connecting part with the moment arm not to the area between the nut and the belly pipe;
controlling the lifting device and the spanner adjusting device to enable the spanner to be sleeved with the nut;
and starting the hydraulic energy supply device, controlling the hydraulic wrench to work, unscrewing the nut, and removing 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 CN115122079A (en) | 2022-09-30 |
| CN115122079B true CN115122079B (en) | 2023-09-19 |
Family
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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| US4287795A (en) * | 1979-11-09 | 1981-09-08 | The Rotor Tool Company | Adjustable blade wrench |
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| 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 |
| CN206937189U (en) * | 2017-07-20 | 2018-01-30 | 沈群聪 | A kind of Multi-functional socket wrench |
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2573728B (en) * | 2017-12-21 | 2022-08-10 | Enerpac Uk Ltd | Tool for use in places with restricted access |
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2021
- 2021-03-26 CN CN202110324321.7A patent/CN115122079B/en active Active
Patent Citations (10)
| 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 |
| 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 |
|---|---|
| CN115122079A (en) | 2022-09-30 |
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