CN102705329B - Pin shaft, mounting structure of pin shaft and concrete pumping equipment - Google Patents
Pin shaft, mounting structure of pin shaft and concrete pumping equipment Download PDFInfo
- Publication number
- CN102705329B CN102705329B CN201210194493.8A CN201210194493A CN102705329B CN 102705329 B CN102705329 B CN 102705329B CN 201210194493 A CN201210194493 A CN 201210194493A CN 102705329 B CN102705329 B CN 102705329B
- Authority
- CN
- China
- Prior art keywords
- bearing pin
- link
- central part
- axis central
- area
- 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.)
- Active
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 14
- 238000010008 shearing Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 239000013585 weight reducing agent Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 208000020442 loss of weight Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 208000016261 weight loss Diseases 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention provides a pin shaft, a mounting structure of the pin shaft and concrete pumping equipment. The hinge pin is divided into a plurality of areas along the axial direction, the areas comprise a first area which is only affected by bending moment during working, the hinge pin comprises a plurality of openings which are positioned in the first area and are arranged along the radial direction of the hinge pin, and the plurality of openings extend along the axial direction of the hinge pin in the first area. The invention reduces the weight of the pin shaft by utilizing the opening arranged on the side wall of the pin shaft, lightens the labor intensity and brings great convenience to the installation and the disassembly.
Description
Technical field
The present invention relates to the manufacture field of bearing pin, more specifically, relate to mounting structure and the concrete pumping equipment of a kind of bearing pin, bearing pin.
Background technique
In prior art, conventionally two parts need to be coupled together by bearing pin, plant lotus to transmit.Take the jib of concrete mixer and concrete spreader as example, the Placement of bearing pin is described below.
As shown in Figure 1, jib comprises first segment arm 200 ' and second section arm 300 ', and first segment arm 200 ' is connected by bearing pin 100 ' with second section arm 300 '.
As Figure 1-3, second section arm 300 ' comprises upper cover plate 310 ', lower cover plate 320 ', web 330 ' and sleeve block 340 '.The box of upper cover plate 310 ', lower cover plate 320 ' and web 330 ' composition encapsulation, it is upper that sleeve block 340 ' is arranged on web 330 ', connects, to strengthen the stability of sleeve block 340 ' between two sleeve blocks 340 ' by shaft sleeve plate 350 '.Bearing pin 100 ' is connected with sleeve block 340 ' by axle sleeve 360 ', in case the generation in process in relative rotation of shotpin axle 100 ', sleeve block 340 ' is worn and torn.Wherein, bearing pin 100 ' couples together jib structure and connecting rod 400 ', thereby jib load is passed to connecting rod 400 '.In addition, be provided with clamp 370 ' at the end face of bearing pin 100 ', bearing pin 100 ' can be blocked by clamp 370 ', to prevent that it from coming off.
What adopt due to bearing pin of the prior art 100 ' is solid shaft, therefore has following shortcoming:
(1) due in the linear distribution of Moment lower section stress, and from neutrosphere more away from stress larger, the stress in the nearer region of decentre layer is lower, therefore material is not fully utilized.Special in the time that bearing pin is longer, bearing pin is heavy (for example can reach hundreds of kilogram) especially, is unfavorable for boom system loss of weight, is also not easy to installation and removal simultaneously, and labor intensity is large.
(2) due to the quenching of bearing pin and the degree of depth of hardening and tempering process limited, in the time that the diameter of solid pin is larger, integral yield intensity can reduce greatly.
Summary of the invention
The present invention aims to provide mounting structure and the concrete pumping equipment of a kind of bearing pin, bearing pin, to solve the problem that in prior art, bearing pin weight is large, installing/dismounting is inconvenient, labor intensity is large.
For solving the problems of the technologies described above, according to a first aspect of the invention, a kind of bearing pin is provided, bearing pin is axially divided into multiple regions along it, when comprising work, region is only subject to the first area of the effect of moment of flexure, bearing pin comprise multiple be positioned at first area, along the opening of radially offering of bearing pin, and multiple opening extending axially along bearing pin in first area.
Further, multiple openings intersect in the inside of bearing pin and form cavity.
Further, multiple openings are along the circumferential distribution of bearing pin.
Further, multiple openings being circumferentially uniformly distributed along bearing pin.
Further, the number of opening is n, and wherein n is more than or equal to 2 natural number, and the diameter of bearing pin is D, and the width of opening is d, and the degree of depth of opening is H,
Further, region also comprises second area, and second area comprises body and is arranged on intrinsic axis central part.
Further, second area bears shearing action and Moment in the time of work simultaneously.
Further, body and axis central part are one-body molded.
Further, body is removably connected with axis central part.
Further, axis central part is threaded with body, interference is connected or welds.
Further, on axis central part, arrange porose.
According to a second aspect of the invention, provide a kind of mounting structure of bearing pin, comprised the first link and the second link, the first link is connected by bearing pin with the second link, and this bearing pin is above-mentioned bearing pin.
Further, bearing pin is through the side arm of the first link and the second link, and the sidewall of the first link and the second link is arranged on the position of the axis central part of bearing pin.
Further, the first link and the second link are the joint arms of concrete pumping equipment.
According to a third aspect of the present invention, provide a kind of concrete pumping equipment, comprised jib, jib comprises multiple joint arms, and adjacent two joint arms connect by bearing pin, and this bearing pin is above-mentioned bearing pin.
Utilization of the present invention is arranged on opening on the sidewall of bearing pin and has reduced the weight of bearing pin, has alleviated labor intensity, brings great convenience to installing/dismounting.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the connection diagram of the jib of concrete mixer of the prior art and material distributing machine;
Fig. 2 has schematically shown the A-A sectional view of Fig. 1;
Fig. 3 has schematically shown the B-B sectional view of Fig. 2;
Fig. 4 has schematically shown the simply supported beam model of bearing pin and the corresponding relation figure of shearing and moment of flexure thereof;
Fig. 5 has schematically shown bearing pin and has been subject to the stress distribution figure when curved;
Fig. 6 has schematically shown the structural representation of the bearing pin in the first embodiment who adopts the bearing pin in the present invention;
Fig. 7 has schematically shown the left view of Fig. 5;
Fig. 8 has schematically shown the schematic diagram while axis central part not being installed in Fig. 5;
Fig. 9 has schematically shown the structural representation of the bearing pin in the second embodiment who adopts bearing pin in the present invention;
Figure 10 has schematically shown the structural representation of the first axis central part;
Figure 11 has schematically shown the structural representation of the second axis central part;
Figure 12 has schematically shown the structural representation of the third axis central part;
Figure 13 has schematically shown the structural representation of the bearing pin in the 3rd embodiment who adopts bearing pin in the present invention;
Figure 14 has schematically shown the sectional view of the bearing pin with three openings; And
Figure 15 has schematically shown the sectional view of the bearing pin with four openings.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As first aspect of the present invention, provide a kind of bearing pin.As shown in Fig. 6,7 and 13, bearing pin 100 is axially divided into multiple regions along it, when comprising work, this region is only subject to the first area of the effect of moment of flexure, bearing pin 100 comprise multiple be positioned at first area, along the opening of radially offering 170 of bearing pin 100, and multiple opening 170 extending axially along bearing pin in first area.Utilization of the present invention is arranged on opening on the sidewall of bearing pin and has reduced the weight of bearing pin, has alleviated labor intensity, brings great convenience to installing/dismounting.
Fig. 4 shows the simply supported beam model of bearing pin and the corresponding relation figure of shearing and moment of flexure thereof.Wherein, the structure shown in Fig. 2 can be reduced to the simply supported beam shown in (a) part in Fig. 4, and wherein, P is load, and the fulcrum that the end of simply supported beam is equivalent between 400 ', two ends of connecting rod is equivalent to sleeve block 340 '.Further, (b) in Fig. 4 is being subject to the shearing force diagram of doing the used time of load P for this simply supported beam, (c) is being subject to the bending moment diagram of doing the used time of load P for simply supported beam.As shown in Figure 4, the part L1 between connecting rod 400 ' and sleeve block 340 ' is subject to the acting in conjunction of shearing and moment of flexure, and the part L2 between two sleeve blocks 340 ' is only subject to the effect of moment of flexure PL1.From the mechanics of materials, as shown in Figure 5, the linear distribution of section stress under Moment, and from neutrosphere C more away from stress larger.
Incorporated by reference to Fig. 2, there is the shearing region of high stress in the two ends (being that sleeve block 340 ' is located) of solid pin, there is the tension and compression stress region of high stress in the circumferential outer surface region between two sleeve blocks 340 ', and central axis ambient stress is lower, material is not fully used, in addition, the stress of the left and right end of bearing pin is lower.Therefore can consider central axis and both ends of the surface stress lower region material to excavate (being hollow out).
Preferably, multiple openings 170 intersect in the inside of bearing pin 100 and form cavity 120.Certainly, opening 170 can not be also mutually to connect, and can play equally the object of weight reduction.Preferably, multiple openings 170 are along the circumferential distribution of bearing pin 100, preferably, and multiple openings 170 being circumferentially uniformly distributed along bearing pin 100.Preferably, multiple openings 170 are along the radially setting of bearing pin.Preferably, the number of opening 170 is 3 (please refer to Figure 14) or 4 (please refer to Figure 15).Preferably, opening 170 extending axially along sidewall.Can adopt the mode of the direct hollow out of solid pin outer surface, opening 170 is opened on solid pin, thereby form opening 170 when the inside of solid pin forms cavity 120.Preferably, the material of the nearer part of the decentre axle of bearing pin must be more by hollow out, and decentre axis place far away must be fewer by hollow out.Like this, not only remove material more than needed, alleviated the quality of bearing pin, also guaranteed to there is good manufacturability.
The present invention can pass through to form the mode of multiple openings easily on the shank of bearing pin, forms cavity 120, thereby alleviated the weight of bearing pin at the middle part of shank, has improved the stressing conditions of bearing pin, has reduced labor intensity, and installing/dismounting gets up very convenient.
In a preferred embodiment, as shown in figure 14, the number of opening 170 is n, and wherein n is more than or equal to 2 natural number, and the diameter of bearing pin 100 is D, and the width of opening 170 is d, and the degree of depth of opening 170 is H,
By the degree of depth of reasonable control opening 170, can control the size of cavity 120, thereby control intensity and the weight of the openwork part of bearing pin.
Preferably, first area is only subject to the effect of moment of flexure.Preferably, this region also comprises second area, and second area comprises body and is arranged on intrinsic axis central part 130.Second area bears shearing action and Moment in the time of work simultaneously.That is to say, cavity 120 is arranged on the position that is only subject to Moment of bearing pin 100.Axis central part 130 is subject to the position of shearing and Moment when being arranged on bearing pin 100.Especially, the number of cavity 120 and axis central part 130 is corresponding with the first area of bearing pin 100 and the number of second area.For example, bearing pin 100 has two first areas, and the number of cavity 120 is two so.Further, as shown in Figure 6, on bearing pin, be formed with oil duct 140.
The present invention utilizes axis central part 130 to resist shearing load, utilizes the corresponding region opposing of cavity 120 bending load, thereby makes the material of bearing pin obtain Optimal Distribution, has realized the object that reduces bearing pin weight.For example, can effectively alleviate more than 60% weight of bearing pin.In addition, it is hollow utilizing the bearing pin in the present invention, can make the inner and outer surface of bearing pin all obtain modified and quenching fully, thereby improve the intensity of axis central part, has therefore increased the bulk strength of bearing pin.
In an embodiment shown in Fig. 6 and Fig. 7, body is removably connected with axis central part 130.For example, be formed for installing the mounting hole 150 of axis central part 130 on body, mounting hole 150 is communicated with cavity 120.That is to say, axis central part 130 can be used as independent parts and is fixed in mounting hole 150, thereby is formed on the end of cavity 120.Preferably, axis central part 130 is threaded with body (particularly mounting hole 150), interference is connected or welding etc.For example, can in mounting hole 150, process tapped hole, then axis central part 130 is installed to the inside of mounting hole 150 by screw thread, so that dismounting.When axis central part 130 is installed to after mounting hole 150, form recess 180 in the end of mounting hole 150.This recess 180 can be arranged on the position corresponding to the end cap of bearing pin, has alleviated weight on the one hand, has improved on the other hand stress situation.Meanwhile, owing to having adopted mounting hole 150, can make bearing pin 100 there is the sidewall compared with minimal thickness, therefore not can due to the quenching of bearing pin and the hardening and tempering process degree of depth limited, make bearing pin yield strength reduce.When installation, can first lock shaft be assembled on jib, then axis central part 130 be installed in mounting hole 150, and form recess 180 at two ends, thereby alleviate the labor intensity of assembling and dismounting.
Preferably, please refer to Fig. 8 and Fig. 9, mounting hole 150 forms limited part 160 with the crossover position of cavity 120.Due to the position that limited part 160 can limit axis central part 130 better, make it can be because of stressed along the axial float of bearing pin 100.Meanwhile, in installing, installation personnel is also easy to by limited part 160, axis central part 130 is in place.Preferably, limited part 160 can be step, and especially, this step can be chamfering formula, can be also radiused.
Preferably, as shown in Figure 9, arrange or loss of weight for convenient for assembly, oil duct, the diameter of cavity 120 corresponding side arms can be designed to be less than the corresponding diameter of axis central part, be designed to dumbbell shaped by the external frame of bearing pin.
Axis central part 130 can be solid construction, can be also hollow-core construction.Figure 10-12 show the structural representation of the axis central part 130 of three kinds of multi-form hollow-core constructions, arrange porose 131 on axis central part 130.Wherein, the axis central part 130 in Figure 10 is hollow cylindrical structures, and the axis central part 130 in Figure 11 is the hollow cylindrical structures with the conical surface 132, and the axis central part 130 in Figure 12 is the hollow cylindrical structures with cambered surface 133.Adopt hollow-core construction, can be so that oil duct design, and can weight reduction.
Preferably, in the embodiment shown in Figure 13, axis central part 130 is integrally formed with body.In the present embodiment, axis central part 130 direct forming, on bearing pin 100, therefore, have the advantages that processing is easy, intensity is high.In addition, adopt integrally formed mode, can for example,, in the time guaranteeing good manufacturability (, avoided welding procedure, because bearing pin material welding performance is poor, the intensity after welding can not guarantee), guarantee that bearing pin has the intensity of mother metal.
Preferably, as shown in figure 13, the end of bearing pin 100 is provided with recess 180.This recess 180 can be arranged on the position corresponding to the end cap of bearing pin, has alleviated weight on the one hand, has improved on the other hand stress situation.
Especially, use the bearing pin in the present invention to can be applicable to (particularly concrete mixer and concrete spreader) in concrete equipment, for example, being connected etc. between being connected between arm and arm, connecting rod and arm, to pass to another parts by the load of parts.
As second aspect of the present invention, a kind of mounting structure of bearing pin is provided, comprise the first link and the second link, the first link is connected by bearing pin with the second link, and this bearing pin is the bearing pin in the various embodiments described above.Preferably, bearing pin is through the side arm of the first link and the second link, and the sidewall of the first link and the second link is arranged on the position of the axis central part 130 of bearing pin.Preferably, the joint arm that the first link and described the second link are concrete pumping equipments.Especially, the first link and the second link are not limited to the joint arm in concrete pumping equipment, are also not limited to concrete pumping equipment field.As long as two parts that need in machinery to connect by bearing pin, all can be considered the first link and the second link in the present invention.
As the 3rd aspect of the present invention, a kind of concrete pumping equipment is provided, comprise jib, jib comprises multiple joint arms, and adjacent two joint arms connect by bearing pin, and this bearing pin is the bearing pin in the various embodiments described above.Especially, concrete pumping equipment can be concrete mixer etc.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a bearing pin, it is characterized in that, described bearing pin (100) is axially divided into multiple regions along it, when comprising work, described region is only subject to the first area of the effect of moment of flexure, described bearing pin (100) comprise multiple be positioned at described first area, along the opening of radially offering (170) of described bearing pin (100) with weight reduction, and described multiple opening (170) is along the extending axially of described bearing pin in described first area, and described opening (170) is arranged on the sidewall of described bearing pin (100) and runs through the outer surface of described bearing pin (100).
2. bearing pin according to claim 1, is characterized in that, described multiple openings (170) intersect in the inside of described bearing pin (100) and form cavity (120).
3. bearing pin according to claim 1, is characterized in that, described multiple openings (170) are along the circumferential distribution of described bearing pin (100).
4. bearing pin according to claim 3, is characterized in that, described multiple openings (170) being circumferentially uniformly distributed along described bearing pin (100).
5. bearing pin according to claim 2, is characterized in that, the number of described opening (170) is n, wherein n is more than or equal to 2 natural number, and the diameter of described bearing pin (100) is D, and the width of described opening (170) is d, the degree of depth of described opening (170) is H,
6. bearing pin according to claim 1, is characterized in that, described region also comprises second area, and described second area comprises body and is arranged on described intrinsic axis central part (130).
7. bearing pin according to claim 6, is characterized in that, described second area bears shearing action and Moment in the time of work simultaneously.
8. bearing pin according to claim 6, is characterized in that, described body and described axis central part (130) are one-body molded.
9. bearing pin according to claim 6, is characterized in that, described body is removably connected with described axis central part (130).
10. bearing pin according to claim 9, is characterized in that, described axis central part (130) is threaded with described body, interference is connected or welds.
11. bearing pins according to claim 9, is characterized in that, arrange porose (131) on described axis central part (130).
The mounting structure of 12. 1 kinds of bearing pins, comprises the first link and the second link, and described the first link is connected by bearing pin with described the second link, it is characterized in that, described bearing pin is the bearing pin described in any one in claim 1-11.
13. according to mounting structure described in claim 12, it is characterized in that, described bearing pin is through the side arm of described the first link and described the second link, and the sidewall of described the first link and described the second link is arranged on the position of the axis central part (130) of described bearing pin.
14. according to mounting structure described in claim 12 or 13, it is characterized in that, the joint arm that described the first link and described the second link are concrete pumping equipments.
15. 1 kinds of concrete pumping equipments, comprise jib, and described jib comprises multiple joint arms, and adjacent two described joint arms connect by bearing pin, it is characterized in that, described bearing pin is the bearing pin described in any one in claim 1-11.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194493.8A CN102705329B (en) | 2012-06-13 | 2012-06-13 | Pin shaft, mounting structure of pin shaft and concrete pumping equipment |
| PCT/CN2012/085865 WO2013185447A1 (en) | 2012-06-13 | 2012-12-04 | Pin shaft, pin shaft mounting structure, and concrete pumping apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194493.8A CN102705329B (en) | 2012-06-13 | 2012-06-13 | Pin shaft, mounting structure of pin shaft and concrete pumping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705329A CN102705329A (en) | 2012-10-03 |
| CN102705329B true CN102705329B (en) | 2014-05-21 |
Family
ID=46898321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210194493.8A Active CN102705329B (en) | 2012-06-13 | 2012-06-13 | Pin shaft, mounting structure of pin shaft and concrete pumping equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102705329B (en) |
| WO (1) | WO2013185447A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705329B (en) * | 2012-06-13 | 2014-05-21 | 中联重科股份有限公司 | Pin shaft, mounting structure of pin shaft and concrete pumping equipment |
| DE112014007199A5 (en) * | 2014-11-20 | 2017-08-03 | Schwing Gmbh | Mast arm with lever mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6330658A (en) * | 1986-07-25 | 1988-02-09 | Yamaha Motor Co Ltd | Piston pin of engine |
| JP3201913B2 (en) * | 1994-07-08 | 2001-08-27 | アネスト岩田株式会社 | Piston pin of oil-free reciprocating compressor |
| JP2005042907A (en) * | 2003-07-10 | 2005-02-17 | Nissan Motor Co Ltd | Pin connecting structure for link mechanism |
| JP5279130B2 (en) * | 2009-04-02 | 2013-09-04 | アイシン軽金属株式会社 | Integrally molded propeller shaft |
| CN102705329B (en) * | 2012-06-13 | 2014-05-21 | 中联重科股份有限公司 | Pin shaft, mounting structure of pin shaft and concrete pumping equipment |
-
2012
- 2012-06-13 CN CN201210194493.8A patent/CN102705329B/en active Active
- 2012-12-04 WO PCT/CN2012/085865 patent/WO2013185447A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013185447A1 (en) | 2013-12-19 |
| CN102705329A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2532928B1 (en) | Compliant carrier wall for improved gearbox load sharing | |
| DE102011100895B4 (en) | centrifugal pendulum | |
| CN102705329B (en) | Pin shaft, mounting structure of pin shaft and concrete pumping equipment | |
| JP2013533936A (en) | Windmill | |
| CN103119111A (en) | Contact closure component | |
| WO2022023364A1 (en) | Elastomer bushing and elastic bearing for wind turbines | |
| CN102705330B (en) | Pin shaft, mounting structure of pin shaft and concrete pumping equipment | |
| DE102010044297B4 (en) | torque arm | |
| EP3714161A1 (en) | Torque support arrangement for a wind power gearbox | |
| WO2014019312A1 (en) | Pin, rotational connection structure, jib connection structure, and engineering machine | |
| EP3658771B1 (en) | Wind turbine steel tower section for a wind turbine tower and method for the production thereof | |
| CN104669410B (en) | Reinforcing rib assembly, side mold of concrete tower member and mold | |
| CN202597374U (en) | Pin shaft, mounting structure of pin shaft and concrete pumping equipment | |
| EP2740933B1 (en) | Wind energy system | |
| DE102007050360B4 (en) | Elastic shaft coupling | |
| CN207634253U (en) | A kind of component of built-up shaft bearing and forebay | |
| EP2740932B1 (en) | Wind energy system | |
| CN107697157A (en) | The steering mechanism of transport vehicle and its processing method | |
| EP2740934A1 (en) | Wind energy system | |
| CN212068944U (en) | Crushing roller and roller teeth thereof | |
| CN202424366U (en) | Round motor base | |
| CN213332230U (en) | High-strength and high-wear-resistance chain | |
| CN217806825U (en) | High scraper blade conveying chain | |
| CN209959846U (en) | Hollow gear shift shaft of high strength | |
| CN212839258U (en) | Novel pump transmission gear with inwards concave perforated web plate design |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |