CN111006814A - An oil pressure pulse wrench calibration device - Google Patents
An oil pressure pulse wrench calibration device Download PDFInfo
- Publication number
- CN111006814A CN111006814A CN202010012384.4A CN202010012384A CN111006814A CN 111006814 A CN111006814 A CN 111006814A CN 202010012384 A CN202010012384 A CN 202010012384A CN 111006814 A CN111006814 A CN 111006814A
- Authority
- CN
- China
- Prior art keywords
- device support
- spring
- pulse wrench
- energy storage
- rotating piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 description 16
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to an oil pressure pulse wrench calibrating device which comprises a device support, wherein a rotating piece is rotatably assembled on the device support, a torque input structure which is used for being in transmission fit with a calibrated pulse wrench is coaxially arranged on the rotating piece, a ratchet wheel is arranged on the rotating piece, a pawl which is used for being matched with the ratchet wheel is arranged on the device support, and an energy storage spring which is used for storing energy when the rotating piece rotates is arranged between the device support and the rotating piece. The invention solves the technical problem that the pulse wrench is inaccurate in calibration due to the fact that the output torque of the pulse wrench is converted into the heat of the screw threads by friction in the prior art.
Description
Technical Field
The invention relates to an oil pulse wrench calibrating device in the field of calibration and calibration.
Background
The oil pressure pulse wrench is an impact wrench which adopts hydraulic oil to drive a striking shaft to generate torque, and the basic working mode is that the size of torque output is controlled by using the size of oil flow, and when a preset torque value is reached, an oil pressure cylinder can continuously perform pulse action without increasing the torque output, so that the torque is effectively controlled.
Therefore, when the hydraulic pulse wrench is calibrated, it is necessary to calibrate whether the preset torque is consistent with the standard torque, and the torque output mode of the hydraulic pulse wrench is intermittently output for a plurality of times, so that there is a certain specificity in the calibration. Among the prior art, to its mode of calibration do, set up a screw hole and with screw hole complex bolt, be connected with the dish spring on the bolt, during the calibration, exert the moment of torsion to the bolt through pulse spanner, bolt axial displacement and exert pressure to the dish spring, when the cooperation of bolt and screw hole can guarantee that pulse spanner is interrupted the output torque, the stack of moment of torsion, when pulse spanner reaches predetermineeing the torque value, the compression volume through the dish spring comes to calibrate pulse spanner. The existing calibration method has the following problems: the resistance of the screw teeth on the bolt and the screw teeth of the screw hole during rotation friction is large, a large amount of heat can be generated, the heat is actually converted from the output torque of the pulse wrench, the output torque of the pulse wrench and the compression amount of the disc spring are not equivalent in expression, a large amount of energy is transmitted in a heating mode, and the pulse wrench cannot be accurately calibrated.
Disclosure of Invention
The invention aims to provide an oil pressure pulse wrench calibration device, which aims to solve the technical problem that in the prior art, the output torque of a pulse wrench is converted into the heat of a screw thread due to friction, so that the calibration of the pulse wrench is inaccurate.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides an oil pressure pulse spanner calibrating device, includes the device support, rotates on the device support and is equipped with the rotating member, coaxial line be provided with on the rotating member be used for with by the pulse spanner transmission complex moment of torsion input structure of calibration, be provided with the ratchet on the rotating member, be provided with on the device support be used for with ratchet complex pawl, the device support with be provided with between the rotating member and be used for carrying out the energy storage spring of energy storage when the rotating member is rotatory.
The device support is provided with an arc-shaped spring groove which is coaxial with the rotating piece, the energy storage spring is a spiral pressure spring, the energy storage spring is arranged in the arc-shaped spring groove, and a spring pressing plate which stretches into the arc-shaped spring groove and is used for axially compressing the energy storage spring is arranged on the rotating piece.
The number of the spiral pressure springs is two, and the two spiral pressure springs are arranged along the axis center of the rotating piece in a symmetrical mode.
The rotating part is of a stepped shaft structure and comprises a large-diameter section and a small-diameter section which are arranged up and down, the pawl is arranged on the periphery of the large-diameter section, an assembly groove is formed in the device support, and the small-diameter section is coaxially arranged in the assembly groove through a bearing.
The torque input structure is an outer square head structure arranged at the top of the large-diameter section.
The invention has the beneficial effects that: when the oil pressure pulse wrench calibrating device is used, the calibrated pulse wrench applies torque to the rotating piece through the torque input structure on the rotating piece, the output torque of the pulse wrench is output discontinuously for multiple times, so that the pawl is matched with the ratchet wheel to avoid torque loss caused by reversion of the rotating piece, the torque can be always superposed, the energy storage spring is compressed when the rotating piece rotates, the corresponding torque is converted through the compression amount of the energy storage spring, the pulse wrench is calibrated, and in the rotating process of the rotating piece, the superposition of the torque is kept through the ratchet wheel pawl, the condition that the torque loss is caused by heat generated through thread friction in the prior art is avoided, and the calibration precision can be improved.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the engagement of the rotating member and pawl of FIG. 1;
FIG. 3 is a schematic view of the engagement of the compression coil spring with the center housing of FIG. 1;
fig. 4 is a bottom view of the rotary member of fig. 1.
Detailed Description
An embodiment of an oil pulse wrench calibration device is shown in fig. 1-4: including the device support, the device support includes the center seat 13 of cylindrical structure, the device support is still including two support arms 4 that are fixed in the center seat both sides, it is equipped with the rotating member of axis of rotation along vertical extension to rotate on the device support, the rotating member is the step shaft structure, the rotating member is including big footpath section 2 and the path section 9 of arranging from top to bottom, big footpath section 2, path section 9 is the cylinder structure, big footpath section 9 upper end be provided with be used for with by the pulse spanner transmission complex torque input structure of calibration, in this embodiment, torque input structure is foreign side structure 1. The periphery of the large-diameter section is provided with a ratchet wheel 5, the two support arms 4 are provided with pawls 3 matched with the ratchet wheel, pawl return springs (not shown in the figure) are arranged between the pawls 3 and the support arms, and the rotating piece is ensured to rotate clockwise in the view angle direction of figure 2 through the matching of the pawls 3 and the ratchet wheel 5.
The central seat 13 is provided with an assembly groove 10, the small-diameter section 9 is coaxially arranged in the assembly groove 10 through a bearing 8, and a thrust bearing 14 is arranged between the upper end of the central seat and the bottom of the large-diameter section. Be provided with two arc spring grooves 6 that arrange with the rotating member coaxial line on the device support, arc spring groove 6 is along the even interval arrangement of circumference, is equipped with energy storage spring 7 in the arc spring groove, and energy storage spring 7 is the helical compression spring in this embodiment, is provided with on the rotating member to stretch into be arranged in the arc spring groove in energy storage spring axial direction compression energy storage spring's spring holder 7.
During the use, oil pressure pulse spanner's torque output sleeve links to each other with big footpath section upper end foreign side head structure 1, set for oil pressure pulse spanner's torque output value, oil pressure pulse spanner carries out the torque output who is interrupted a lot of to outside square head structure, whole rotating member clockwise rotates, spring plate 11 of big footpath section lower extreme is to corresponding helical compression spring 7 applys pressure, 7 energy storage of helical compression spring, the rotating member reversal can be avoided with the 5 cooperations of ratchet 3, thereby avoid oil pressure pulse spanner torque output interval to appear the rotating member problem of reversing, can realize the continuous stack of moment of torsion. When the oil pressure pulse wrench reaches a set torque output value, according to hooke's law, the spring force is calculated by using the compression amount of the helical compression spring, the compression amount of the helical compression spring can be obtained through measurement or can be obtained through the rotation angle of the rotating part, the torque borne by the rotating part can be calculated according to the distance between the helical spring and the axis of the rotating part, and the oil pressure pulse wrench is calibrated through the comparison of the torque and the set torque of the oil pressure pulse wrench. After the calibration is finished, the pawl is pulled in the opposite direction, the pawl leaves the ratchet wheel, and the rotating piece resets under the action of the spiral pressure spring.
In other embodiments of the present invention, the torque input structure may also be changed according to the torque output structure of the impulse wrench, for example, when the torque output structure of the impulse wrench is an outer head structure, the torque input structure may be an inner square hole structure adapted to the outer head structure; the number of the pawls can be set according to requirements, such as one pawl, three pawls or other numbers; the number of the helical compression springs can also be set according to the requirement, such as one, three or other numbers; the energy storage spring can also be a tension spring or a torsion spring arranged between the small-diameter section and the device bracket.
Claims (5)
1. The utility model provides an oil pressure pulse spanner calibrating device, includes the device support, its characterized in that: the device support is provided with a rotating part in a rotating mode, a torque input structure matched with the calibrated pulse wrench in a transmission mode is coaxially arranged on the rotating part, a ratchet wheel is arranged on the rotating part, a pawl matched with the ratchet wheel is arranged on the device support, and an energy storage spring used for storing energy when the rotating part rotates is arranged between the device support and the rotating part.
2. The oil pulse wrench calibration device according to claim 1, wherein: the device support is provided with an arc-shaped spring groove which is coaxial with the rotating piece, the energy storage spring is a spiral pressure spring, the energy storage spring is arranged in the arc-shaped spring groove, and a spring pressing plate which stretches into the arc-shaped spring groove and is used for axially compressing the energy storage spring is arranged on the rotating piece.
3. The oil pulse wrench calibration device according to claim 2, wherein: the number of the spiral pressure springs is two, and the two spiral pressure springs are arranged along the axis center of the rotating piece in a symmetrical mode.
4. The calibration device for an oil pulse wrench according to any one of claims 1 to 3, characterized in that: the rotating part is of a stepped shaft structure and comprises a large-diameter section and a small-diameter section which are arranged up and down, the pawl is arranged on the periphery of the large-diameter section, an assembly groove is formed in the device support, and the small-diameter section is coaxially arranged in the assembly groove through a bearing.
5. The oil pulse wrench calibration device according to claim 4, wherein: the torque input structure is an outer square head structure arranged at the top of the large-diameter section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012384.4A CN111006814A (en) | 2020-01-07 | 2020-01-07 | An oil pressure pulse wrench calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012384.4A CN111006814A (en) | 2020-01-07 | 2020-01-07 | An oil pressure pulse wrench calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111006814A true CN111006814A (en) | 2020-04-14 |
Family
ID=70120551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010012384.4A Pending CN111006814A (en) | 2020-01-07 | 2020-01-07 | An oil pressure pulse wrench calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111006814A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208350U (en) * | 1987-05-20 | 1988-01-27 | 第二汽车制造厂 | Torque wrench calibrator |
| US20050155434A1 (en) * | 2002-04-12 | 2005-07-21 | Holger Luethje | Device for adjusting and verifying the tension force of screwed connections |
| CN204255572U (en) * | 2014-11-25 | 2015-04-08 | 奇瑞汽车股份有限公司 | A kind of moment caliberating device of automobile assembling instrument |
| CN204286666U (en) * | 2014-12-11 | 2015-04-22 | 陕西东方航空仪表有限责任公司 | Portable power turns round tool measuring machine surely |
-
2020
- 2020-01-07 CN CN202010012384.4A patent/CN111006814A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208350U (en) * | 1987-05-20 | 1988-01-27 | 第二汽车制造厂 | Torque wrench calibrator |
| US20050155434A1 (en) * | 2002-04-12 | 2005-07-21 | Holger Luethje | Device for adjusting and verifying the tension force of screwed connections |
| CN204255572U (en) * | 2014-11-25 | 2015-04-08 | 奇瑞汽车股份有限公司 | A kind of moment caliberating device of automobile assembling instrument |
| CN204286666U (en) * | 2014-12-11 | 2015-04-22 | 陕西东方航空仪表有限责任公司 | Portable power turns round tool measuring machine surely |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI498196B (en) | A method of indirectly coupled torque control and the mechanism thereof | |
| CN110861025B (en) | A capacitive grid sensor torque wrench | |
| CN204525277U (en) | Easy-to-adjust torque wrench | |
| CN101670415B (en) | Hydraulic pressure mold for ultra-long slender rod twisting and upsetting | |
| CN111006814A (en) | An oil pressure pulse wrench calibration device | |
| CN108789243A (en) | Axial disk ratchet skidding spanner | |
| CN110778698B (en) | Device for eliminating transmission clearance of gear pair | |
| JP5989447B2 (en) | Torque sensor | |
| CN103722519B (en) | The moment of torsion tunable arrangement of screw rotating tool for a kind of hand | |
| CN105041757B (en) | Double-thread screw-type swing hydraulic cylinder with piston and use method thereof | |
| CN221495858U (en) | Impact mechanism of impact screwdriver capable of adjusting impact force | |
| CN209551781U (en) | An Active-Passive Variable Stiffness Joint | |
| CN203875814U (en) | Novel manual torque screwdriver | |
| CN114486031A (en) | Torsional spring torsion measuring device | |
| CN216284717U (en) | Rotary bending fatigue testing machine for aviation pipeline | |
| CN206899147U (en) | A kind of pre- clamping tool of bolt and nut | |
| CN214368111U (en) | Manual valve torque operating device | |
| CN113340512B (en) | Method for detecting locking torque between bolts and nuts | |
| CN203670410U (en) | Tensile nut | |
| CN201665016U (en) | Shut height adjustment device of press | |
| CN213970901U (en) | Push type deep hole spanner | |
| CN203171502U (en) | Novel ratchet wrench | |
| CN201211650Y (en) | Bidirectional ratchet socket spanner | |
| CN107702851A (en) | Bolt simulator and torque spanner calibrating installation | |
| CN219579268U (en) | Electric and manual dual-purpose push rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |