CN109142096B - Be applied to near marine exploration ship steel strength detection device of polar region circle - Google Patents
Be applied to near marine exploration ship steel strength detection device of polar region circle Download PDFInfo
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- CN109142096B CN109142096B CN201811121163.XA CN201811121163A CN109142096B CN 109142096 B CN109142096 B CN 109142096B CN 201811121163 A CN201811121163 A CN 201811121163A CN 109142096 B CN109142096 B CN 109142096B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 238000010009 beating Methods 0.000 claims abstract description 30
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 5
- 241000252254 Catostomidae Species 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 230000003116 impacting effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 240000008574 Capsicum frutescens Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a steel strength detection device for a ship, which is applied to ocean exploration near a polar region, and comprises a detection groove, wherein two ends of the top of the detection groove are connected with the same door-shaped frame through bolts, the middle position of the inner wall of the top of the door-shaped frame is connected with a fixing ring through bolts, the inside of the circumference of the fixing ring is sleeved with a connecting ring, the outer wall of the circumference of the connecting ring is connected with a swinging rope through bolts, one end, away from the connecting ring, of the swinging rope is connected with a pendulum bob through bolts, a beating block is welded on one side of the pendulum bob, the middle position of the outer wall on one side of the detection groove is connected with a beating motor through bolts, and one end of. The invention increases the authenticity of detection, is convenient for detecting the deformation of the steel plate, improves the detection accuracy of the deformation of the steel plate, prevents the pendulum bob from flying out of the detection groove or the pendulum bob from deviating and impacting the inner wall of the detection groove, and improves the safety.
Description
Technical Field
The invention relates to the technical field of ocean exploration, in particular to a steel strength detection device for an ocean exploration ship near a polar region.
Background
Polar region includes the arctic region including north pole and south pole, is covered by the ice cover, and the mineral kind of depositing is huge many, surveys boats and ships through the ocean at present and carries out the marine exploration to polar region, surveys the steel material that boats and ships used under the chilly environment of polar region, and its cold brittleness can change, need carry out the rigidity intensity to marine steel of surveying in order to guarantee the security and detect, especially the cold brittleness of steel.
Through the retrieval, chinese patent application number is CN 108106800A's patent, discloses an intensity detection device of steel ring, including base and support, the support mounting is on the base, and the recess has been seted up to the base bottom, and the interval is provided with two baffles on the base, and the baffle is relative is provided with pressure sensor on the surface, and the support top is provided with the hydro-cylinder, and the hydro-cylinder end is provided with the clamp plate, has seted up the rectangular channel on the clamp plate, and the rectangular channel is corresponding with the recess. The strength detection device of the steel ring in the patent has the following defects: 1. detecting that the steel plate has no authenticity, has no pertinence to the ocean near the polar region, and does not simulate the cold brittleness of the steel plate under the condition that a ship in the ocean collides with the reef; 2. when the cold brittleness of the steel plate is detected, the deformation size generated when the steel plate is impacted is difficult to detect.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a steel strength detection device applied to an ocean exploration ship near a polar region.
In order to achieve the purpose, the invention adopts the following technical scheme:
the steel strength detection device for the marine exploration ship, which is applied to the vicinity of the polar region, comprises a detection groove, wherein two ends of the top of the detection groove are connected with the same door-shaped frame through bolts, the middle position of the inner wall of the top of the door-shaped frame is connected with a fixing ring through bolts, the inside of the circumference of the fixing ring is sleeved with a connecting ring, the outer wall of the circumference of the connecting ring is connected with a swinging rope through bolts, one end of the swinging rope, which is far away from the connecting ring, is connected with a pendulum bob through bolts, one side of the pendulum bob is welded with a beating block, the middle position of the outer wall of one side of the detection groove is connected with a beating motor through bolts, one end of an output shaft of the beating motor is connected with a beating lug through bolts, two ends of the inner wall of the other side of the detection groove are connected with two support rods through bolts, two the inside grafting of spacing groove has same rectangular frame, the equal threaded connection in both ends of rectangular frame one side has two clamping bolt, and two clamping bolt threaded connection that are located rectangular frame one side have same tight piece of clamp, and one side centre gripping of two tight pieces of clamp has same steel sheet, there is the handle at the top of rectangular frame outer wall through bolted connection, there is same mount at the top of detecting groove both ends inner wall through bolted connection, and there is the connecting spring that the equidistance distributes one side of mount through bolted connection, there is spacing net connecting through bolted connection in the one end that connecting spring kept away from the mount.
Furthermore, one side of the inner wall of the rectangular frame is provided with a mounting plate, through holes distributed at equal intervals are formed in one side of the mounting plate, and movable teeth are inserted into the circumferential inner wall of each through hole.
Furthermore, the movable teeth are welded with a top plate at one end close to the steel plate, and one side of the top plate close to the steel plate is attached to the steel plate.
Furthermore, two grooves are formed in the two sides of the rectangular frame, limiting teeth and supporting strips are welded on the inner walls of the two sides of the two limiting grooves, and the outer diameters of the limiting teeth are matched with the inner diameters of the grooves.
Furthermore, one side of the beating block, which is far away from the pendulum bob, is provided with irregular teeth, the beating block is of a circular truncated cone structure, and the circumference of the beating block is provided with shunting teeth which are distributed equidistantly.
Furthermore, the pendulum bob is in a spherical shape, and a beating plane is arranged on one side of the pendulum bob, which is far away from the beating block.
Furthermore, the bottom of the limiting net is provided with silica gel suckers distributed at equal intervals, and the periphery of the limiting net is connected with the fixing frame and the inner wall of the detection groove through connecting springs respectively.
Further, the bottom of mount is equipped with the protection strip, and the top intermediate position of protection strip has seted up the mounting groove, and the both ends inner wall of mounting groove is connected with the pivot through the bearing.
Furthermore, the bottom of the protection strip is provided with limit strips distributed at equal intervals, a through hole is formed in the middle position of one side, close to the protection strip, of each limit strip, and the inner diameter of the through hole is matched with the outer diameter of the rotating shaft.
The invention has the beneficial effects that:
1. through setting up the pendulum, hit the piece and beat the motor, the output shaft of beating the motor promotes to beat the lug and strikes the pendulum, and the pendulum strikes with hitting one side of piece to the steel sheet, and the size of deformation after striking through the steel sheet and how much the cold brittleness that detects the steel sheet of crackle, and hit one side of beating the piece and be equipped with irregular tooth simulation reef unevenness's surface, detect the inslot and pack and be equipped with the sea water, increase the authenticity that detects.
2. Through setting up mounting panel, movable tooth and roof, the steel sheet receives the striking to take place deformation and promote the movable tooth, judges the deformation size of steel sheet through the displacement of movable tooth on the mounting panel, is convenient for detect the deformation size of steel sheet, and the roof is close to one side and the steel sheet laminating of steel sheet, and the roof increases the area of contact between movable tooth and the steel sheet, improves the detection accuracy of steel sheet deflection.
3. Through setting up spacing net, silica gel sucking disc and coupling spring, the pendulum and the contact of spacing net of striking back rebound, spacing net and silica gel sucking disc cushion the pendulum, prevent that the pendulum departure from detecting the groove, and the pendulum rebounds the time guard bar with pendulum rope contact, spacing carries on spacing the pendulum rope and prevents that the pendulum rope from sliding on the guard bar, avoids the inner wall in pendulum deviation striking detection groove, improves the security.
4. Through the impact block that sets up reposition of redundant personnel tooth and round platform structure, the pendulum drives and hits the piece and when detecting the inslot and remove, effectively reduces and hits the resistance that hits the piece and receive in aqueous, and the striking dynamics that makes the steel sheet receive is enough big.
5. Through setting up the pivot, when the pendulum rope contacted with the pivot, the pivot atress was at the mounting groove internal rotation to slow down the pendulum rope swing in-process and the power that produces in the twinkling of an eye of protection strip contact, when reducing the rebound range of pendulum, avoided the rigid friction between pendulum rope and the protection strip to damage the pendulum rope.
Drawings
FIG. 1 is a schematic structural diagram of a steel strength detection device for marine exploration ships near polar regions, according to the present invention;
FIG. 2 is a sectional view showing a structure of a side surface of a hammering bump applied to the steel strength detecting apparatus for a marine exploration ship near a polar region according to the present invention;
FIG. 3 is a cross-sectional view of the side structure of the fixing frame of the steel strength testing device for marine exploration near polar region according to the present invention;
FIG. 4 is a cross-sectional view of a structure of a guard bar applied to a device for detecting the strength of steel for a marine exploration ship near a polar region, according to the present invention;
FIG. 5 is a top sectional view of a limiting groove of the steel strength testing device for marine exploration ships near polar regions according to the present invention;
FIG. 6 is a cross-sectional view of a rectangular frame in a plan view showing the steel strength measuring device for a marine exploration vessel near a polar region according to the present invention.
In the figure: 1-detection groove, 2-beating bump, 3-beating motor, 4-connecting spring, 5-limiting net, 6-pendulum bob, 601-beating plane, 7-fixing frame, 8-fixing ring, 9-door type frame, 10-connecting ring, 11-swinging rope, 12-handle, 13-connecting block, 14-supporting rod, 15-rectangular frame, 1501-groove, 16-limiting groove, limit tooth, 1602-supporting bar, 17-beating block, 1701-irregular tooth, 1702-shunt tooth, 18-silica gel sucker, 19-rectangular bar, 1901-mounting groove, 1902-rotating shaft, 1903-through hole, 1904-limiting bar, 20-steel plate, 21-mounting plate, 2101-through hole, 22-movable tooth, 2201-top plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, the steel strength detection device for the marine exploration ship applied near the polar region comprises a detection groove 1, wherein two ends of the top of the detection groove 1 are connected with the same door-shaped frame 9 through bolts, the middle position of the inner wall of the top of the door-shaped frame 9 is connected with a fixing ring 8 through bolts, the inside of the circumference of the fixing ring 8 is sleeved with a connecting ring 10, the outer wall of the circumference of the connecting ring 10 is connected with a swinging rope 11 through bolts, one end of the swinging rope 11 far away from the connecting ring 10 is connected with a pendulum bob 6 through bolts, one side of the pendulum bob 6 is welded with a beating block 17, the middle position of the outer wall of one side of the detection groove 1 is connected with a beating motor 3 through bolts, one end of the output shaft of the beating motor 3 is connected with a beating bump 2 through bolts, two ends of the inner wall of the other side of the, and one side of two connecting blocks 13 that are located same vertical direction has same spacing groove 16 through bolted connection, the inside grafting of two spacing grooves 16 has same rectangle frame 15, the equal threaded connection in both ends of rectangle frame 15 one side has two clamping bolt, and two clamping bolt threaded connection that are located rectangle frame 15 one side have same tight piece of clamp, one side centre gripping of two tight pieces of clamp has same steel sheet 20, there is handle 12 at the top of rectangle frame 15 outer wall through bolted connection, there is same mount 7 at the top of detecting 1 both ends inner wall of groove through bolted connection, and there is equidistant connecting spring 4 of distribution in one side of mount 7 through bolted connection, there is spacing net 5 through bolted connection in the one end that connecting spring 4 kept away from mount 7.
In the invention, one side of the inner wall of the rectangular frame 15 is connected with an installation plate 21 through a fastening bolt, through holes 2101 are distributed on one side of the installation plate 21 at equal intervals, movable teeth 22 are inserted into the circumferential inner wall of the through holes 2101, the movable teeth 22 are pushed when the steel plate 20 is impacted and deformed, and the deformation of the steel plate 20 is judged through the displacement of the movable teeth 22 on the installation plate 21.
One end of the movable tooth 22 close to the steel plate 20 is welded with a top plate 2201, one side of the top plate 2201 close to the steel plate 20 is attached to the steel plate 20, the contact area between the movable tooth 22 and the steel plate 20 is increased through the top plate 2201, and the detection accuracy of the deformation of the steel plate 20 is improved.
Two recesses 1501 have all been seted up to rectangular frame 15's both sides, and the both sides inner wall of two spacing grooves 16 has all welded spacing tooth 1601 and support bar 1602, and the external diameter of spacing tooth 1601 and the internal diameter looks adaptation of recess 1501 make things convenient for rectangular frame 15 to insert in spacing groove 16 and take out, and support bar 1602 protects rectangular frame 15 when striking steel sheet 20, increases rectangular frame 15's intensity.
One side of the striking block 17, which is far away from the pendulum bob 6, is provided with irregular teeth 1701 to simulate unevenness of the surface of a reef in the ocean, the detection groove 1 is filled with seawater to increase the reality sense of detection, the striking block 17 is in a circular truncated cone structure, the circumference of the striking block 17 is provided with shunting teeth 1702 distributed at equal intervals, the resistance of the striking block 17 in the water is reduced, and the impact force of the steel plate 20 is large enough.
The pendulum bob 6 is in a spherical shape, and a beating plane 601 is arranged on one side of the pendulum bob 6 away from the beating block 17, so that the beating lug 2 is prevented from sliding when contacting with the pendulum bob 6.
The bottom of the limiting net 5 is connected with silica gel suckers 18 which are distributed equidistantly through fastening bolts, the periphery of the limiting net 5 is connected with the fixing frame 7 and the inner wall of the detection groove 1 through the connecting springs 4 respectively, the pendulum bob 6 after impact can be wrapped and buffered, the pendulum bob 6 is prevented from rebounding and flying out of the detection groove 1, and the safety is improved.
The bottom of mount 7 is connected with protection strip 19 through fastening bolt, and the mounting groove 1901 has been seted up to the top intermediate position of protection strip 19, and the both ends inner wall of mounting groove 1901 is connected with pivot 1902 through the bearing, and when pendulum rope 11 contacted with pivot 1902, pivot 1902 took place to rotate the power that slows down pendulum rope 11, reduces pendulum 6's bounce-back range.
The bottom of protection strip 19 is connected with spacing 1904 that the equidistance distributes through fastening bolt, and spacing 1904 is close to one side intermediate position of protection strip 19 and has seted up perforation 1903, and the internal diameter of perforation 1903 and the external diameter looks adaptation of pivot 1902, pendulum rope 11 when with the contact of protection strip 19, spacing 1904 prevents that pendulum rope 11 from sliding on protection strip 19, avoids pendulum 6 skew striking to detect the inner wall of groove 1.
When the device is used, a steel plate 20 is fixed on one side of a rectangular frame 15 in a refrigerating chamber through a clamping bolt and a clamping piece, the rectangular frame 15 is inserted into two limiting grooves 16 by holding a handle 12, an output shaft of a hammering motor 3 pushes a hammering lug 2 to impact a pendulum bob 6, the pendulum bob 6 and a hammering block 17 impact one side of the steel plate 20, irregular teeth 1701 simulate the uneven surface of a reef, the steel plate 20 deforms when impacted and pushes movable teeth 22, the deformation of the steel plate 20 is judged through the displacement of the movable teeth 22 on a mounting plate 21, the rectangular frame 15 is drawn out to perform crack detection on the steel plate 20, the pendulum bob 6 rebounded after impact contacts with a limiting net 5, the limiting net 5 and a silica gel sucker 18 buffer the pendulum bob 6 to prevent the pendulum bob 6 from flying out of a detection groove 1, a protection strip 19 contacts with a pendulum rope 11 when the pendulum bob 6 rebounds, the limiting strip 1904 limits the pendulum rope to prevent the pendulum rope 11 from sliding on a protection strip 19, avoid pendulum 6 skew striking to detect the inner wall of groove 1, improve the security.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. Be applied to near marine exploration ship steel strength detection device of polar region circle, including detecting groove (1), its characterized in that, the both ends of detecting groove (1) top have same door type frame (9) through bolted connection, and the intermediate position of door type frame (9) top inner wall has solid fixed ring (8) through bolted connection, gu fixed ring (8) the circumference is inside to be cup jointed go-between (10), and the circumference outer wall of go-between (10) has pendulum rope (11) through bolted connection, the one end of pendulum rope (11) keeping away from go-between (10) has pendulum bob (6) through bolted connection, and one side welding of pendulum bob (6) has beating piece (17), the intermediate position of detecting groove (1) one side outer wall has beating motor (3) through bolted connection, and the one end of beating motor (3) output shaft has beating lug (2) through bolted connection, two ends of the inner wall of the other side of the detection groove (1) are connected with two support rods (14) through bolts, one end of each of the four support rods (14) is connected with a connecting block (13) through a bolt, one side of each of the two connecting blocks (13) positioned in the same vertical direction is connected with the same limiting groove (16) through a bolt, the insides of the two limiting grooves (16) are inserted with the same rectangular frame (15), two ends of one side of the rectangular frame (15) are connected with two clamping bolts through threads, the two clamping bolts positioned at one side of the rectangular frame (15) are connected with the same clamping piece through threads, one side of each of the two clamping pieces clamps the same steel plate (20), the top of the outer wall of the rectangular frame (15) is connected with a handle (12) through bolts, and the tops of the inner walls of the two ends of, one side of the fixed frame (7) is connected with connecting springs (4) which are distributed at equal intervals through bolts, and one end, far away from the fixed frame (7), of each connecting spring (4) is connected with a limiting net (5) through a bolt;
a protective strip (19) is arranged at the bottom of the fixing frame (7), a mounting groove (1901) is formed in the middle of the top of the protective strip (19), and inner walls of two ends of the mounting groove (1901) are connected with a rotating shaft (1902) through bearings;
the bottom of protection strip (19) is equipped with spacing strip (1904) that the equidistance distributes, and spacing strip (1904) are close to one side intermediate position of protection strip (19) and have seted up perforation (1903), and the internal diameter of perforation (1903) and the external diameter looks adaptation of pivot (1902).
2. The steel strength detection device for the marine exploration ship near the polar region as claimed in claim 1, wherein a mounting plate (21) is arranged on one side of the inner wall of the rectangular frame (15), through holes (2101) are formed in one side of the mounting plate (21) and are distributed equidistantly, and movable teeth (22) are inserted into the circumferential inner wall of the through holes (2101).
3. The steel strength detection device for the marine exploration vessel near the polar region as claimed in claim 2, wherein a top plate (2201) is welded to one end of the movable tooth (22) near the steel plate (20), and one side of the top plate (2201) near the steel plate (20) is attached to the steel plate (20).
4. The steel strength detection device applied to the marine exploration ship near the polar region as claimed in claim 1, wherein two grooves (1501) are formed in both sides of the rectangular frame (15), a limiting tooth (1601) and a supporting bar (1602) are welded to inner walls of both sides of the two limiting grooves (16), and an outer diameter of the limiting tooth (1601) is matched with an inner diameter of each groove (1501).
5. The steel strength detection device for the marine exploration ship near the polar region according to claim 1, wherein irregular teeth (1701) are arranged on one side, away from the pendulum bob (6), of the striking block (17), the striking block (17) is in a circular truncated cone structure, and shunt teeth (1702) are distributed on the circumference of the striking block (17) at equal intervals.
6. The steel strength detection device for the marine exploration ship near the polar region according to claim 1, wherein the pendulum bob (6) is spherical, and a beating plane (601) is arranged on one side of the pendulum bob (6) far away from the beating block (17).
7. The steel strength detection device for the marine exploration ship near the polar region as claimed in claim 1, wherein the bottom of the limiting net (5) is provided with silica gel suckers (18) distributed at equal intervals, and the periphery of the limiting net (5) is connected with the fixing frame (7) and the inner wall of the detection groove (1) through the connecting spring (4).
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| CN201811121163.XA CN109142096B (en) | 2018-09-26 | 2018-09-26 | Be applied to near marine exploration ship steel strength detection device of polar region circle |
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| CN201811121163.XA CN109142096B (en) | 2018-09-26 | 2018-09-26 | Be applied to near marine exploration ship steel strength detection device of polar region circle |
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| CN109142096B true CN109142096B (en) | 2021-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110658088B (en) * | 2019-10-25 | 2022-05-10 | 广西百邕新材料有限公司 | Anti striking test fixture of steel panel |
| CN111998879B (en) * | 2020-08-17 | 2022-08-02 | 安徽中池新材料有限公司 | Polar region monitoring facilities protection device |
| CN112658682B (en) * | 2020-12-30 | 2022-10-28 | 秭归华星船务有限公司 | Propeller surfacing device for ship repair and surfacing process |
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| CN106018133A (en) * | 2016-06-28 | 2016-10-12 | 芜湖鸣人热能设备有限公司 | Steel plate surface impact test device for boiler |
| CN108106800A (en) * | 2016-11-25 | 2018-06-01 | 宝应县广达钢圈制造有限公司 | A kind of intensity detecting device of steel ring |
| CN206459896U (en) * | 2017-01-09 | 2017-09-01 | 中国铁道科学研究院铁道建筑研究所 | A kind of device for simulating simple boundary condition when plate is tested |
| CN106950126A (en) * | 2017-04-25 | 2017-07-14 | 天津大学 | Object lateral impact experimental rig and its test method |
| CN107796715A (en) * | 2017-11-24 | 2018-03-13 | 青岛科技大学 | A kind of experimental rig for being used to detect the two-way anti-temporary impact performance of coating |
| CN107807053A (en) * | 2017-11-30 | 2018-03-16 | 青岛科技大学 | A kind of hard and soft interchangeable experimental rig of impact |
| CN207556784U (en) * | 2017-12-27 | 2018-06-29 | 襄阳惠华汽车配件有限公司 | A kind of special stiffness excitations tooling of transmission shaft intermediate supports |
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