CN214748824U - High-strength screw fastening detection device - Google Patents
High-strength screw fastening detection device Download PDFInfo
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- CN214748824U CN214748824U CN202121100308.5U CN202121100308U CN214748824U CN 214748824 U CN214748824 U CN 214748824U CN 202121100308 U CN202121100308 U CN 202121100308U CN 214748824 U CN214748824 U CN 214748824U
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Abstract
The utility model relates to a structural engineering technical field, concretely relates to high strength screw rod fastening detection device. This high strength screw rod fastening detection device includes: a supporting cylinder, a jacking device and a tension force detection device. The supporting cylinder is sleeved on the screw rod, and one end of the supporting cylinder abuts against a structure to be fastened, through which the screw rod penetrates; the jacking device is arranged at the other end of the supporting cylinder and is used for being sleeved on the screw rod and detachably connected with the screw rod so as to stretch the screw rod; and the tension force detection device is used for acquiring the jacking displacement of the jacking device and the tension force of the screw. The problem of inconvenient detection of screw rod fastening force among the prior art, lead to the unsatisfied requirement of fastening force can be solved.
Description
Technical Field
The utility model relates to a structural engineering technical field, concretely relates to high strength screw rod fastening detection device.
Background
High strength screws are important components for interconnecting different parts in a structure or equipment and are a particular form of high strength bolt. The pretightening force of the high-strength screw is an important control and inspection parameter, and the pretightening force which does not meet the design requirement can lead out the potential safety hazard of a structure or equipment. For example, a suspension bridge is provided with a high-strength screw rod to clamp a cable clamp on a main cable so as to transmit bridge load borne by a sling to the main cable, and if the pretightening force is insufficient, the cable clamp can slip and the like, so that the structural safety of the bridge is affected; the connection mode between wind power tower pole and the blade is also high strength screw rod pretension connection, if the pretension is too big or not enough then major incident such as screw rod fracture and blade drop appear easily.
The high-strength screw used in engineering is generally fastened, constructed and checked in a jack tensioning mode, and due to factors such as machining tolerance and roughness of the screw and a connecting structure, the axial force of the cable clamp screw is difficult to accurately control and detect. In recent years, a screw axial force detection method based on ultrasound is proposed by technicians, for example, a patent with the name of 'a suspension bridge cable clamp screw axial force detection method' of patent No. 201710827046.4, and the method adopts ultrasonic measurement and a jack tensioning device to detect the fastening axial force of a fastened screw, and can avoid the need of the jack tensioning device for assistance in later detection. The patent No. 201620438541.7 entitled "tension apparatus for screw detection" provides a detection mode for obtaining the relationship between the length and the tension of a screw by ultrasonic measurement in the process of screw graded tension and then calculating the axial force.
However, the key point for ensuring the construction quality of the screw rod lies in the tension system and the implementation process control. In the prior art, the jack tensioning of the screw only controls tensioning load, the specific implementation depends on experience and is rough, the fastening force of the screw after construction cannot be checked, and the fastening force of the screw cannot meet the design requirement easily in the above mode, so that the safety of a structure or equipment is influenced.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a high strength screw rod fastening detection device can solve among the prior art inconvenient the detecting of screw rod fastening force, leads to the unsatisfied problem of requirement of fastening force.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
the utility model provides a high strength screw rod fastening detection device, a serial communication port, include:
the supporting cylinder is sleeved on the screw rod, and one end of the supporting cylinder abuts against the structure to be fastened, through which the screw rod passes;
the jacking device is arranged at the other end of the supporting cylinder, is sleeved on the screw rod and is detachably connected with the screw rod so as to stretch the screw rod;
and the tension force detection device is used for acquiring the jacking displacement of the jacking device and the tension force of the screw rod.
In some optional schemes, the tension detecting device comprises:
the jacking displacement sensor is arranged on the jacking device and used for detecting the jacking displacement of the jacking device;
and the tension force sensor is arranged on the supporting cylinder and used for acquiring the tension force of the screw rod.
In some alternatives, the tension sensor is a resistive strain sensor or a vibrating wire strain sensor.
In some optional schemes, the jacking displacement sensor is an optical fiber displacement sensor, an ultrasonic distance measuring sensor, a magnetostrictive displacement sensor or an inductance pen type displacement sensor.
In some optional schemes, the lifting device further comprises a hydraulic rotating sleeve, which is arranged inside the supporting cylinder and sleeved on a nut for fastening the screw rod, so as to fasten the nut when the lifting device stretches the screw rod and/or after the screw rod is stretched.
In some optional schemes, the tension detecting device further includes a rotation angle sensor, and is further configured to acquire a rotation angle of the hydraulic rotating sleeve.
In some alternatives, the rotation angle sensor is a photoelectric sensor, a sliding resistance sensor, a magnetic induction sensor, or a hall sensor.
In some alternatives, further comprising a hydraulic system for providing hydraulic pressure to the jacking device and the hydraulic rotating sleeve, the hydraulic system comprising:
a hydraulic pump for providing hydraulic pressure;
the two ends of the first hydraulic pipeline are communicated with the hydraulic pump and the jacking device, and the first hydraulic pipeline is provided with a first hydraulic sensing controller for collecting and controlling the hydraulic pressure of the first hydraulic pipeline;
and the two ends of the second hydraulic pipeline are communicated with the hydraulic pump and the hydraulic rotating sleeve, and the second hydraulic pipeline is provided with a second hydraulic sensing controller for acquiring and controlling the hydraulic pressure of the second hydraulic pipeline.
In some alternatives, the jacking device is a hydraulic jacking device, the hydraulic jacking device comprising:
the outer shell is arranged at the other end of the supporting cylinder, and an accommodating space is arranged in the outer shell;
the piston is arranged in the accommodating space, forms a pressure area with the accommodating space of the outer shell, and is used for being sleeved on the screw rod and detachably connected with the screw rod;
and the cover plate is arranged on the outer shell and enables the piston to penetrate through.
In some optional schemes, the inner side of the piston is provided with internal threads for being detachably connected with the screw rod.
Compared with the prior art, the utility model has the advantages of: when the high-strength screw fastening detection device is used, the high-strength screw fastening detection device is installed at the end part of the screw, the jacking device is loaded with the tension screw, and the jacking device is used for acquiring the tension force of the screw when the tension force changes from zero through the tension force detection deviceFirst jacking displacement u of the device1(ii) a Obtaining the tension force of the screw to reach the design tension value FDesign ofSecond jacking displacement u of corresponding jacking deviceF(ii) a According to u1、FDesign ofAnd uFDetermining the pre-tightening force F before the screw is tensioned0. Thus, the pretightening force F of the screw rod before tensioning can be obtained in real time in the tensioning process0And then judging the pre-tightening force F of the screw rod before tensioning according to the design requirement0Whether the requirement is met or not is judged to be whether the compensation drawing is needed or not, the high-precision and high-efficiency screw tensioning construction and real-time inspection are realized, the quality of the structure or equipment is improved, and the construction cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a usage status of a high-strength screw fastening detection device in an embodiment of the present invention;
fig. 2 is a schematic three-dimensional structure diagram of a position a in the embodiment of the present invention;
fig. 3 is a schematic structural view of the high-strength screw fastening detection device in the embodiment of the present invention;
fig. 4 is a schematic diagram of the solution of the high-strength screw fastening detection method in the embodiment of the present invention;
FIG. 5 is a diagram illustrating the relationship between the tensile force and the hydraulic stroke of the piston according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a relationship between a nut rotation angle and an output torque according to an embodiment of the present invention.
In the figure: 1. a support cylinder; 2. a screw; 3. a structure to be fastened; 4. a jacking device; 41. an outer housing; 42. a piston; 43. a cover plate; 5. hydraulically rotating the sleeve; 6. a nut; 7. a tension detecting device; 71. a jacking displacement sensor; 72. a tension sensor; 73. a rotation angle sensor; 8. a hydraulic system; 81. a hydraulic pump; 82. a first hydraulic line; 83. a first hydraulic pressure sensing controller; 84. a second hydraulic line; 85. and a second hydraulic sensing controller.
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. 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.
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the utility model provides a high strength screw rod fastening detection device, include: the supporting cylinder 1, the jacking device 4 and the tension force detecting device 7.
The supporting cylinder 1 is used for being sleeved on the screw rod 2, and one end of the supporting cylinder abuts against the structure 3 to be fastened, through which the screw rod 2 penetrates; the jacking device 4 is arranged at the other end of the supporting cylinder 1 and is used for being sleeved on the screw rod 2 and detachably connected with the screw rod 2 so as to stretch the screw rod 2; the tension force detection device 7 is used for acquiring the jacking displacement of the jacking device 4 and the tension force of the screw rod 2.
When the high-strength screw fastening detection device is used, the high-strength screw fastening detection device is installed at the end part of the screw, the jacking device 4 is loaded to stretch the screw 2, and the first jacking displacement u of the jacking device 4 when the tension of the screw 2 changes from zero is obtained through the tension detection device 71(ii) a Obtaining the tension force of the screw rod 2 to reach the design tension value FDesign ofSecond jacking displacement u of corresponding jacking device 4F(ii) a According to u1、FDesign ofAnd uFDetermining the pre-tightening force F of the screw rod 2 before tensioning0. Thus, the pretightening force F of the screw rod before tensioning can be obtained in real time in the tensioning process0Then judging the sheet according to the design requirementsPretightening force F of screw rod before pulling0Whether the requirement is met or not is judged to be whether the compensation drawing is needed or not, the high-precision and high-efficiency screw tensioning construction and real-time inspection are realized, the quality of the structure or equipment is improved, and the construction cost is reduced.
In the present embodiment, the design tension value FDesign ofCan be a set value or a value detected in real time, thereby calculating the pretightening force F of the screw rod before tensioning in time0。
As shown in FIGS. 4 to 6, the principle of application is as follows, assuming that the fastening force before the screw is tensioned is F0Corresponding to screw elongation of Deltal0Stretching to a design stretching force FDesign ofWhen the corresponding screw elongation is Δ L, the following relationship exists:
according to the relation, the pretightening force F of the screw rod 2 before tensioning can be deduced0：
Obtaining the pre-tightening force F of the screw rod before tensioning0Then, the pretightening force F of the screw rod before tensioning is judged according to the design requirement0Whether the requirement is met or not is judged to be whether the compensation drawing is needed or not, the high-precision and high-efficiency screw tensioning construction and real-time inspection are realized, the quality of the structure or equipment is improved, and the construction cost is reduced. This calculation process can be calculated manually or can be integrated into the calculation algorithm inside the tension detecting device 7.
In some alternative embodiments, the tension detecting device 7 includes: a jacking displacement sensor 71 and a tension sensor 72.
The jacking displacement sensor 71 is arranged on the jacking device 4 and used for detecting jacking displacement of the jacking device 4; the tension sensor 72 is arranged on the support cylinder 1 and used for acquiring the tension of the screw rod 2.
In this embodiment, the jacking displacement sensor 71 is an optical fiber displacement sensor, an ultrasonic distance measuring sensor, a magnetostrictive displacement sensor or an inductance pen type displacement sensor, and the tension sensor 72 is a resistance type strain sensor or a vibrating wire type strain sensor. The tension sensor 72 calibrates the relationship between the axial strain and the tension force F by measuring the axial strain of the support cylinder 1 at the lower part during tensioning, and then obtains the tension force F of the jacking device 4 to the screw rod 2 according to the monitored axial strain. In this example, a plurality of strain sensors are adopted, and all the strain sensors are arranged along the circumferential direction of the support cylinder 1 at the lower part, and 2 to 8 strain sensors can be arranged in an axisymmetric manner, and 4 strain sensors are suggested to be arranged.
In addition, the tension force F can also be obtained by providing an annular pressure ring below the jacking device 4. The tension force F can also be calibrated by using the input oil pressure of the jacking device 4 and the tension force, and then the tension force F is obtained according to the input oil pressure of the jacking device 4.
The tension force detection device 7 further comprises an analysis system for determining whether the tension force of the screw rod 2 before tensioning meets the design requirements according to the jacking displacement of the jacking device 4 and the tension force of the screw rod 2.
In some optional embodiments, the high-strength screw tightening detection device further includes a hydraulic rotating sleeve 5 configured to be disposed inside the support cylinder 1 and to be sleeved on the nut 6 of the tightening screw 2, so as to tighten the nut 6 when the jacking device 4 tensions the screw 2 and/or after the tensioning screw 2.
In this embodiment, the hydraulic rotating sleeve 5 is a socket head cap sleeve, which is sleeved on the fastening nut 6 of the screw rod 2. Pretightening force F before the screw 2 is tensioned0When the design requirement is not met, the hydraulic rotating sleeve 5 is utilized to fasten the nut 6, so that the tension force of the screw rod 2 after the jacking device 4 is unloaded can meet the design requirement.
In some optional embodiments, the tension detecting device 7 is further configured to obtain a rotation angle of the hydraulic rotating sleeve 5, and the tension detecting device 7 may determine whether the tension of the screw rod 2 after being tensioned meets the design requirement according to the jacking displacement of the jacking device 4, the tension of the screw rod 2, and the rotation angle of the hydraulic rotating sleeve 5.
In this embodiment, the tension detecting device 7 further includes a rotation angle sensor 73, and the rotation angle sensor 73 is a photoelectric sensor, a sliding resistance sensor, or a magnetic induction sensorA sensor or a hall sensor. The axial displacement distance of the fastening nut 6 can be obtained according to the rotation angle and the thread pitch. Thus, the sleeve 5 is rotated according to the rotation angle a of the hydraulic pressureRotary wrenchAnd a third jacking displacement u of the jacking device 4 after unloading2In combination with FDesign ofAnd uFThe pre-tightening force F of the screw 2 after being tensioned can be determined1。
In some optional embodiments, further comprising a hydraulic system 8 for providing hydraulic pressure to the jacking device 4 and the hydraulic rotating sleeve 5, the hydraulic system 8 comprising: a hydraulic pump 81, a first hydraulic line 82.
Wherein, the hydraulic pump 81 is used for providing hydraulic pressure; two ends of the first hydraulic pipeline 82 are communicated with the hydraulic pump 81 and the jacking device 4, and the first hydraulic pipeline 82 is provided with a first hydraulic sensing controller 83 for collecting and controlling the hydraulic pressure of the first hydraulic pipeline 82; the two ends of the second hydraulic pipeline 84 are communicated with the hydraulic pump 81 and the hydraulic rotating sleeve 5, and a second hydraulic sensing controller 85 is arranged on the second hydraulic pipeline 84 and used for collecting and controlling the hydraulic pressure of the second hydraulic pipeline 84.
In this embodiment, the input pressure of the jacking device 4 may be obtained through the first hydraulic pressure sensing controller 83, and the tensile force F may be calibrated by using the oil pressure obtained by the first hydraulic pressure sensing controller 83 and the tensile force, and then the tensile force F is obtained according to the oil pressure obtained by the first hydraulic pressure sensing controller 83. The hydraulic pressure of the hydraulic rotary sleeve 5 can be obtained by a second hydraulic pressure sensing controller 85 provided on the second hydraulic line 84, and the screwing torque Q of the hydraulic rotary sleeve 5 is obtained by calibrating the relationship between the hydraulic pressure and the second hydraulic pressure sensing controller 85 and then obtaining the relationship according to the oil pressure obtained by the second hydraulic pressure sensing controller 85. The screwing torque Q can also be monitored by providing a torque sensor in the hydraulic rotating sleeve 5.
In some alternative embodiments, the jacking device 4 is a hydraulic jacking device, which includes: an outer housing 41, a piston 42 and a cover plate 43.
Wherein, the outer shell 41 is arranged at the other end of the supporting cylinder 1, and an accommodating space is arranged in the outer shell; the piston 42 is arranged in the accommodating space and forms a pressure area with the accommodating space of the outer shell 41, and the piston 42 is used for being sleeved on the screw rod 2 and detachably connected with the screw rod 2; a cover plate 43 is provided on the outer case 41 and passes the piston 42 therethrough.
In this embodiment, the piston 42 is internally threaded for detachable connection with the screw 2. The lift-up displacement sensor 71 is provided between the piston 42 and the cover plate 43, and the piston 42 is extended or contracted by pressurizing or depressurizing the pressure area formed between the piston 42 and the housing 41. The jack displacement sensor 71 detects the amount of expansion and contraction of the screw 2 by detecting the amount of expansion and contraction of the piston 42.
Referring to fig. 5 and 6, in some alternative embodiments, the preload force F is applied before the screw 2 is tensioned0When the design requirements are not met, the nut 6 is fastened by using the hydraulic rotating sleeve 5, and the rotating angle a of the hydraulic rotating sleeve 5 is obtainedRotary wrenchUnloading the jacking device 4, and acquiring a third jacking displacement u of the jacking device 4 after unloading2(ii) a According to FDesign ofAnd uF、u2And aRotary wrenchDetermining the pre-tightening force F of the screw 2 after tensioning1。
In the present embodiment, the jacking device 4 is gradually loaded by the hydraulic system 8, and during the tensioning process, the hydraulic rotary sleeve 5 is loaded to the set low oil pressure maintenance through the second hydraulic sensing controller 85 arranged on the second hydraulic pipeline 84, and the output torque Q of the hydraulic rotary sleeve 5 does not exceed the set value Q1(it is sufficient to ensure that the nut 6 rotates following the tensioning process, and the rotation angle is a corresponding to a small value, such as 100 N.m.)1So that the nut 6 is synchronously screwed in the tensioning process. Of course, the pre-tension force F before the screw 2 is tensioned0When the design requirement is met, the set value Q of the output torque of the hydraulic rotating sleeve 51The nut of the fastening screw 2 cannot be rotated.
When the calculated pre-tightening force F of the screw rod 2 before tensioning0When the design requirements are not met, the nut 6 is synchronously screwed in the tensioning process.
The jacking device 4 is continuously loaded to the tensile force F through the hydraulic system 8 to reach the design tensile force F of the screwDesign of. Design tension value FDesign ofThe pre-tightening force of the unloaded screw rod 2 obtained according to experience meets the tension force corresponding to the design requirement.
When the tensile force F reaches FDesign ofIn this case, the first hydraulic pressure sensor controller 83 controls the hydraulic system to stop the loading of the jack device 4 and to keep the oil pressure stable. The second hydraulic sensing controller 85 controls the hydraulic system to start loading the hydraulic rotating sleeve 5, the output torque Q of the hydraulic rotating sleeve 5 is increased, and the rotation angle a of the nut 6 is monitored. When the output torque Q increases to a design value, i.e., a design value for fastening the nut, the nut turning angle a stops increasing, and Q is Q at this time2A is aRotary wrenchAt this point, the loading and unloading of the hydraulic rotating sleeve 5 is stopped.
Then, the progressive unloading of the jacking device 4 is started, while monitoring the hydraulic stroke u of the piston 42 structure, from uFFall back to u2。
Assuming that the tightening force after tensioning is F1Corresponding screw elongation of Δ l1. Then there is the following correspondence:
deducing:
wherein A is the nominal cross-sectional area of the screw, E is the elastic modulus of the material, D is the nominal diameter, and R is the tension from the tension to the tension of FDesign ofThe clamping length of the stress area of the screw is r, the clamping length of the stress area of the screw before tensioning is r, and m is the distance between threads.
Finally, the fastening force F after tensioning is judged1If the design requirements are met, tensioning is finished; if the requirements are not met, the tensioning is carried out again, the conditions of the screw and the connecting structure are required to be checked and processed, whether thread damage, obstacles and the like exist at the tensioning end of the screw, the screw is replaced by a new screw if necessary, and then the tensioning meeting the design requirements is completed.
In conclusion, by adopting the high-strength screw fastening detection device, the screw fastening axial force before and after tensioning can be obtained in real time when the bolt is fastened, the high-precision and high-efficiency screw tensioning construction and real-time inspection are realized, the structure or equipment quality is improved, and the construction cost is reduced. The tension force of the screw can meet the requirement. In addition, whole stretch-draw process, accessible tension force detection device 7 accomplishes automatically, has improved the efficiency of construction, has reduced constructor technical training, operation and quality management and control degree of difficulty.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a high strength screw rod fastening detection device which characterized in that includes:
the supporting cylinder (1) is sleeved on the screw rod (2), and one end of the supporting cylinder is abutted against a structure (3) to be fastened, which is penetrated by the screw rod (2);
the jacking device (4) is arranged at the other end of the supporting cylinder (1) and is used for being sleeved on the screw rod (2) and detachably connected with the screw rod (2) so as to stretch the screw rod (2);
and the tension force detection device (7) is used for acquiring the jacking displacement of the jacking device (4) and the tension force of the screw (2).
2. The high-strength screw tightening detection device according to claim 1, wherein the tensile force detection device (7) includes:
the jacking displacement sensor (71) is arranged on the jacking device (4) and used for detecting the jacking displacement of the jacking device (4);
and the tension sensor (72) is arranged on the support cylinder (1) and is used for acquiring the tension of the screw rod (2).
3. The high-strength screw tightening detection device according to claim 2, characterized in that: the jacking displacement sensor (71) is an optical fiber displacement sensor, an ultrasonic distance measuring sensor, a magnetostrictive displacement sensor or an inductance pen type displacement sensor.
4. The high-strength screw tightening detection device according to claim 2, characterized in that: the tension sensor (72) is a resistance type strain sensor or a vibrating wire type strain sensor.
5. The high-strength screw tightening detection device according to claim 1, further comprising a hydraulic rotation sleeve (5) for being disposed inside the support cylinder (1) and being fitted over a nut (6) for tightening the screw (2) so as to tighten the nut (6) when the screw (2) is tensioned by the jacking device (4) and/or after the screw (2) is tensioned.
6. The high-strength screw tightening detection device according to claim 5, wherein the tensile force detection device (7) further includes a rotation angle sensor (73) for also acquiring a rotation angle of the hydraulic rotating sleeve (5).
7. The high-strength screw tightening detection device according to claim 6, characterized in that: the rotation angle sensor (73) is a photoelectric sensor, a sliding resistance type sensor, a magnetic induction type sensor or a Hall type sensor.
8. The high-strength screw tightening detection device according to claim 1, characterized in that: still include hydraulic system (8), it is used for providing hydraulic pressure for jacking device (4) and hydraulic pressure rotating sleeve (5), hydraulic system (8) include:
a hydraulic pump (81) for providing hydraulic pressure;
the two ends of the first hydraulic pipeline (82) are communicated with the hydraulic pump (81) and the jacking device (4), and a first hydraulic sensing controller (83) is arranged on the first hydraulic pipeline (82) and used for collecting and controlling the hydraulic pressure of the first hydraulic pipeline (82);
and two ends of the second hydraulic pipeline (84) are communicated with the hydraulic pump (81) and the hydraulic rotating sleeve (5), and a second hydraulic sensing controller (85) is arranged on the second hydraulic pipeline (84) and used for acquiring and controlling the hydraulic pressure of the second hydraulic pipeline (84).
9. The high-strength screw tightening detection device according to claim 1, characterized in that: jacking device (4) are hydraulic jacking device, hydraulic jacking device includes:
an outer shell (41) which is arranged at the other end of the supporting cylinder (1) and is internally provided with an accommodating space;
the piston (42) is arranged in the accommodating space, a pressure area is formed between the piston and the accommodating space of the outer shell (41), and the piston (42) is used for being sleeved on the screw rod (2) and detachably connected with the screw rod (2);
and a cover plate (43) which is provided on the outer housing (41) and through which the piston (42) passes.
10. The high-strength screw tightening detection device according to claim 9, characterized in that: the inner side of the piston (42) is provided with internal threads for detachable connection with the screw rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202121100308.5U CN214748824U (en) | 2021-05-21 | 2021-05-21 | High-strength screw fastening detection device |
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| CN202121100308.5U CN214748824U (en) | 2021-05-21 | 2021-05-21 | High-strength screw fastening detection device |
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