CN202732592U - Pin shaft, rotational connection structure, arm support connection structure and construction machinery - Google Patents
Pin shaft, rotational connection structure, arm support connection structure and construction machinery Download PDFInfo
- Publication number
- CN202732592U CN202732592U CN 201220381156 CN201220381156U CN202732592U CN 202732592 U CN202732592 U CN 202732592U CN 201220381156 CN201220381156 CN 201220381156 CN 201220381156 U CN201220381156 U CN 201220381156U CN 202732592 U CN202732592 U CN 202732592U
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- bearing pin
- beam barrel
- axle head
- section
- arm
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Abstract
The utility model provides a pin shaft, a rotational connection structure, an arm support connection structure, and construction machinery. The pin shaft comprises a hollow shaft barrel (10) and solid shaft ends (20) fixedly connected with two ends of the shaft barrel (10). According to the pin shaft, the bonding strength of the pin shaft is ensured while the pin shaft weight is reduced, and the labor intensity of the working personnel is relieved.
Description
Technical field
The utility model relates to the mechanical fastener field, in particular to a kind of bearing pin, rotation connection structure, arm support connecting structure and engineering machinery.
Background technique
In existing rotation connection structure, bearing pin is with a wide range of applications as connecting two rotating connectors that relatively rotate object, is used in a plurality of fields.
And in large-scale engineering machinery, bearing pin many times is used for connecting two larger joint arms, perhaps connecting joint arm and connecting rod, and in the course of the work, bearing pin often not only will bear shearing force, also will bear moment of flexure.Because the structure of joint arm is larger, therefore in order to connect two joint arms, just need bearing pin to have enough length, and in order to guarantee that bearing pin is in the situation with enough length, still have enough join strengths, to bear shearing force and moment of flexure, the diameter of bearing pin also needs correspondingly to increase, will increase like this weight of bearing pin, make bearing pin seem very heavy, increase significantly the weight of boom system, brought very large inconvenience also for the installation and removal of bearing pin, greatly increased operator's labor intensity.
The model utility content
The utility model aims to provide a kind of bearing pin, rotation connection structure, arm support connecting structure and engineering machinery, can reduce the quality of bearing pin in the join strength that guarantees bearing pin, alleviates staff's labor intensity.
To achieve these goals, according to an aspect of the present utility model, provide a kind of bearing pin, comprised hollow beam barrel and the solid axle head that is fixedly connected on the beam barrel two ends.
Further, the periphery wall of the periphery wall of axle head and beam barrel flushes.
Further, the end that at least one axle head cooperates with beam barrel is provided with projection, and projection is set in the beam barrel.
Further, the periphery wall of projection is provided with outside thread, and the inner circle wall of beam barrel is provided with the internal thread that cooperates with the outside thread of projection.
Further, be welding between beam barrel and the axle head, the attachment weld between beam barrel and the axle head is positioned at the hollow section of beam barrel.
Further, projection is hollow-core construction, and the interior perimeter surface of projection along the axial length of bearing pin greater than outer surface along the axial length of bearing pin.
Further, axle head has the groove that is positioned at the center away from the end of an end of beam barrel.
Further, be provided with oil guiding hole in the axle head.
According on the other hand of the present utility model, a kind of rotation connection structure is provided, comprise at least the first rotating component and the second rotating component, the first rotating component and the second rotating component are rotationally connected by bearing pin, and this bearing pin is above-mentioned any bearing pin.
Further, bearing pin comprises stressed section of the mixing that is positioned at the first rotating component and the second rotating component, and the pure moment of flexure section that is subjected between stressed section of the mixing of both sides, and beam barrel runs through the whole pure moment of flexure section that is subjected to along the axial direction of bearing pin.
According to again one side of the present utility model, a kind of arm support connecting structure is provided, comprise the first segment arm and the second section arm that are rotationally connected, the first segment arm is sheathed in the second section arm, the bearing pin mounting hole two ends of the connecting end of first segment arm are fixedly installed respectively sleeve block, be fixedly connected with by shaft sleeve plate between two sleeve blocks, sleeve block is embedded with axle sleeve in the hole, the exterior edge face butt of the inner side surface of second section arm and sleeve block, bearing pin is located in the bearing pin mounting hole and axle sleeve of second section arm, this bearing pin is above-mentioned any bearing pin, and the axle head of bearing pin is arranged in sleeve block and the second section arm, and beam barrel is arranged between two sleeve blocks.
Provide a kind of engineering machinery more on the one hand according to of the present utility model, comprised be used to the bearing pin that is rotationally connected, this bearing pin is above-mentioned any bearing pin.
Use the technical solution of the utility model, bearing pin comprises hollow beam barrel and is fixedly connected on the solid axle head at beam barrel two ends.Because the beam barrel section of bearing pin is in the pure zone that is subjected to curved power of whole bearing pin, therefore not stressing or stressedly cutting out than the zonule the beam barrel section, just can be when guaranteeing that bearing pin has good manufacturability, rigidity, fatigue crack-resistant performance, effectively alleviate the weight of bearing pin, alleviate staff's labor intensity.
Description of drawings
The accompanying drawing that consists of a part of the present utility model is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows and partly cuts open structural representation according to embodiment's of the present utility model bearing pin;
Fig. 2 shows the left TV structure schematic diagram according to the embodiment's of Fig. 1 bearing pin;
Fig. 3 show according to the A-A of the embodiment's of Fig. 1 bearing pin to the sectional structure schematic diagram;
Simply supported beam force analysis schematic diagram when Fig. 4 shows and is used for being rotationally connected according to embodiment's of the present utility model bearing pin; And
Fig. 5 shows the pure stress distribution schematic diagram that is subjected to the moment of flexure section according to embodiment's of the present utility model bearing pin.
Embodiment
Hereinafter also describe in conjunction with the embodiments the utility model in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
As shown in Figure 1 to Figure 3, according to embodiment of the present utility model, a kind of bearing pin comprises hollow beam barrel 10 and is fixedly connected on the solid axle head 20 at beam barrel 10 two ends.
In conjunction with referring to Fig. 4 and shown in Figure 5, when bearing pin makes to connect two rotating components as rotating connector, model to its simple beam structure is analyzed, as can be seen from Figure 4, be in the position of the link position of two links at the two ends of bearing pin, not only be subject to the shearing action of load p, also will be subject to the Moment of load p L, therefore, the two ends of bearing pin are be subject to simultaneously shearing and moment of flexure coefficient.And the part bearing pin between two strong points then is subject to the Based on Pure Bending Moment effect, is specially two L2 sections of both sides, bearing pin center.Can be found out by the pure stress envelope of moment of flexure section that is subjected to of the bearing pin among Fig. 5, under the effect of moment of flexure, the linear distribution of section stress, and from neutrosphere H more away from, stress is just larger, and near the bearing pin that is positioned at neutrosphere H is regional, does not basically stress.
Via bearing pin is carried out finite element analysis, and the stress distribution of bearing pin is simulated and can be learnt, the shearing high stress areas appears in the two ends of bearing pin, and the tension and compression stress region of high stress appears in the circumferential outer surface zone between the two end supports point.And the pure central axis ambient stress of moment of flexure section that is subjected to of bearing pin is lower, and stress deformation is less, and the stress of the end at two ends, the bearing pin left and right sides is also lower, and stress deformation is less.
By above-mentioned analysis as can be known, in the using process of bearing pin, it all is very little that bearing pin pure is subjected to the stress at the endface position place, two ends of moment of flexure section and bearing pin, very little for the stressed effect played of bearing pin in connection procedure, therefore, the utility model is in the situation that consider above-mentioned factor, the manufacturability of bearing pin will can not be affected, the material of the stress lower region of the performance such as rigidity and fatigue crack-resistant is excavated, like this, just in the situation of the structural strength that does not affect bearing pin and properties, effectively alleviated the weight of bearing pin, alleviated the labor intensity of operator's assembling and dismounting bearing pin, also greatly alleviated the weight of whole rotation connection structure, so that rotation connection structure has advantages of light-high-strength.
Bearing pin of the present utility model, be subject to the coefficient two-end part of shearing and moment of flexure, be a section and b section, adopt solid axle head 20 structures, and to being positioned at the pure bearing pin that is subjected to moment of flexure section zone, then adopt hollow beam barrel 10, therefore, neither can affect the structural strength of bearing pin, reduce again the weight of bearing pin.
In order to guarantee that bearing pin can have better outward appearance, mounting structure more easily, more uniform force structure, preferably, the periphery wall of the periphery wall of axle head 20 and beam barrel 10 flushes, this is just so that have preferably transition connecting structure between axle head 20 and the beam barrel 10, can be not incompatible and in use affect the performance of bearing pin owing to periphery wall.
In order to strengthen further the structural strength of bearing pin, be provided with projection 21 in the end that at least one axle head 20 cooperates with beam barrel 10, this projection 21 is set in the beam barrel 10.Preferably, be provided with projection 21 on the axle head 20 at bearing pin two ends.The periphery wall of projection 21 is provided with outside thread, and the inner circle wall of beam barrel 10 is provided with the internal thread that cooperates with the outside thread of projection 21, and the connecting thread of axle head 20 and beam barrel 10 is positioned at the pure moment of flexure section that is subjected to of bearing pin.This projection 21 can be annular protrusion, a plurality of projections that also can circumferentially distribute for the central axis around axle head 20.
In addition, can also between beam barrel 10 and axle head 20, weld, and make attachment weld between beam barrel 10 and the axle head 20 be positioned at the pure moment of flexure section that is subjected to of bearing pin.Make axle head 20 and attachment weld, the connecting thread of beam barrel 10 be distributed in the pure moment of flexure section that is subjected to, effectively reduce weld seam, screw thread is stressed.The inwall of beam barrel 10 links to each other with axle head 20 by screw thread, effectively reduces the stressed of attachment weld, has improved the fatigue life of weld seam.
In the middle of other embodiment, also can make between projection 21 and the beam barrel 10 and cooperate for optical axis, only be welding between axle head 20 and the beam barrel 10 and make, because projection 21 parts of bearing pin are mainly born Moment, cooperate being set to optical axis between projection 21 and the beam barrel 10, can not affect the force structure of bearing pin, and reduce the difficulty of processing of bearing pin.
And with bearing pin and axle head 20 and beam barrel 10 separate machined, then connect, just axle head 20 and beam barrel 10 can be welded into after the heat treatment respectively more as a wholely, so the inner and outer surface of bearing pin can both be modulated and be quenched fully, greatly increased the bulk strength of bearing pin.
In order to alleviate further the weight of bearing pin, pure projection 21 parts that are subjected to the moment of flexure zone for being in bearing pin can it be set to hollow-core construction, so neither can affect the structural strength of bearing pin, have alleviated further again the weight of bearing pin.Preferably, the interior perimeter surface of projection along the axial length of bearing pin greater than outer surface along the axial length of bearing pin.In order to guarantee the welded stability between axle head 20 and the beam barrel 10, need to make welding portion be positioned at the pure moment of flexure section that is subjected to of bearing pin, therefore, when design, the part-structure that axle head 20 is cooperated with beam barrel 10 also is positioned at the pure moment of flexure section that is subjected to of bearing pin, in case the shotpin axle in use is in mixed function power section owing to welding portion, and affect welded stability.
In this pin shaft structure, the hollow-core construction of projection 21 can be from the pure mixing stress area that is subjected to the moment of flexure section to extend to axle head 20 of bearing pin always, also be, make part that projection 21 boring structure cooperates with beam barrel 10 greater than outer surface along the axial length of bearing pin along the axial length of bearing pin, this also under the prerequisite of the structural strength that does not affect bearing pin, has alleviated the further weight of bearing pin.
The less zone of stress for end, bearing pin two ends, can also away from the end of an end of beam barrel 10 groove 22 be set at axle head 20, this groove 22 is positioned at the center of axle head 20 end faces, and the structural strength of the degree of depth of groove 22 axle head 20 that should not have influence on bearing pin when being in coupled condition.
In the axle head 20 at bearing pin two ends, be provided with oil guiding hole 23, oil guiding hole 23 is communicated to the periphery wall of axle head 20 from the exterior edge face of axle head 20, be used for to lubricate wet goods and pour the face that is rotatably assorted place to bearing pin and rotating component into, to reduce the wearing and tearing of bearing pin, the working life of prolongation bearing pin.
According to embodiment of the present utility model, a kind of rotation connection structure comprises at least the first rotating component and the second rotating component, and the first rotating component and the second rotating component are rotationally connected by bearing pin, and this bearing pin is above-mentioned bearing pin.This bearing pin comprises stressed section of the mixing that is positioned at the first rotating component and the second rotating component, and the pure moment of flexure section that is subjected between stressed section of the mixing of both sides, and the hollow-core construction of beam barrel 10 runs through the whole pure moment of flexure section that is subjected to along the axial direction of bearing pin.
According to embodiment of the present utility model, a kind of arm support connecting structure comprises first segment arm and the second section arm that is rotationally connected, the first segment arm is sheathed in the second section arm, the bearing pin mounting hole two ends of the connecting end of first segment arm are fixedly installed respectively sleeve block, be fixedly connected with by shaft sleeve plate between two sleeve blocks, sleeve block is embedded with axle sleeve in the hole, the exterior edge face butt of the inner side surface of second section arm and sleeve block, bearing pin is located in the bearing pin mounting hole and axle sleeve of second section arm, this bearing pin is above-mentioned bearing pin, the axle head 20 of bearing pin is arranged in sleeve block and the second section arm, and beam barrel 10 is arranged between two sleeve blocks.
According to embodiment of the present utility model, a kind of engineering machinery comprises be used to the bearing pin that is rotationally connected, and this bearing pin is above-mentioned bearing pin.
From above description, can find out, the utility model the above embodiments have realized following technique effect: axle head is provided with around the symmetrical projection of axle head center line, one side away from the axle head center line on the projection is provided with female thread structure, beam barrel is hollow beam barrel, the inwall of beam barrel is connected with the periphery wall of projection away from the axle head center line respectively, beam barrel and protruding contacted part are provided with female thread structure, closely cooperate with the external thread structure on the projection, weld with two axial ends respectively at the two ends of beam barrel, the entity part of axle head has consisted of the curved scissors combination section of bearing pin, be used for shearing load and bending load that opposing is transmitted, the cavity segment that forms after projection on the axle head is connected with beam barrel has consisted of the simple bending section of bearing pin, be used for the bending load amount that opposing is transmitted, realize that the bearing pin material reaches Optimal Distribution, has effectively reduced the axle weight of having strong market potential.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (12)
1. a bearing pin is characterized in that, comprises hollow beam barrel (10) and is fixedly connected on the solid axle head (20) at described beam barrel (10) two ends.
2. bearing pin according to claim 1 is characterized in that, the periphery wall of the periphery wall of described axle head (20) and described beam barrel (10) flushes.
3. bearing pin according to claim 1 is characterized in that, the end that at least one described axle head (20) cooperates with described beam barrel (10) is provided with projection (21), and described projection (21) is set in the described beam barrel (10).
4. bearing pin according to claim 3 is characterized in that, the periphery wall of described projection (21) is provided with outside thread, and the inner circle wall of described beam barrel (10) is provided with the internal thread that cooperates with the outside thread of described projection (21).
5. each described bearing pin in 4 according to claim 1, it is characterized in that, be welding between described beam barrel (10) and the described axle head (20), the attachment weld between described beam barrel (10) and the described axle head (20) is positioned at the hollow section of described beam barrel (10).
6. according to claim 3 or 4 described bearing pins, it is characterized in that, described projection (21) is hollow-core construction, and the interior perimeter surface of described projection (21) along the axial length of bearing pin greater than outer surface along the axial length of bearing pin.
7. each described bearing pin in 4 according to claim 1 is characterized in that, described axle head (20) has the groove (22) that is positioned at the center away from the end of an end of described beam barrel (10).
8. bearing pin according to claim 1 is characterized in that, is provided with oil guiding hole (23) in the described axle head (20).
9. a rotation connection structure comprises at least the first rotating component and the second rotating component, and described the first rotating component and described the second rotating component are rotationally connected by bearing pin, it is characterized in that, described bearing pin is each described bearing pin in the claim 1 to 8.
10. rotation connection structure according to claim 9, it is characterized in that, described bearing pin comprises stressed section of the mixing that is positioned at described the first rotating component and described the second rotating component, and the pure moment of flexure section that is subjected between stressed section of the described mixing of both sides, described beam barrel (10) runs through the whole described pure moment of flexure section that is subjected to along the axial direction of described bearing pin.
11. arm support connecting structure, comprise the first segment arm and the second section arm that are rotationally connected, described first segment arm is sheathed in the described second section arm, the bearing pin mounting hole two ends of the connecting end of described first segment arm are fixedly installed respectively sleeve block, be fixedly connected with by shaft sleeve plate between two described sleeve blocks, described sleeve block is embedded with axle sleeve in the hole, the exterior edge face butt of the inner side surface of described second section arm and described sleeve block, bearing pin is located in the bearing pin mounting hole and described axle sleeve of described second section arm, it is characterized in that, described bearing pin is each described bearing pin in the claim 1 to 8, the axle head of described bearing pin (20) is arranged in described sleeve block and the described second section arm, and described beam barrel (10) is arranged between two described sleeve blocks.
12. an engineering machinery comprises be used to the bearing pin that is rotationally connected, and it is characterized in that, described bearing pin is each described bearing pin in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220381156 CN202732592U (en) | 2012-08-02 | 2012-08-02 | Pin shaft, rotational connection structure, arm support connection structure and construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220381156 CN202732592U (en) | 2012-08-02 | 2012-08-02 | Pin shaft, rotational connection structure, arm support connection structure and construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732592U true CN202732592U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220381156 Expired - Fee Related CN202732592U (en) | 2012-08-02 | 2012-08-02 | Pin shaft, rotational connection structure, arm support connection structure and construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797741A (en) * | 2012-08-02 | 2012-11-28 | 中联重科股份有限公司 | Pin, rotation connection structure, jib connection structure and engineering machinery |
-
2012
- 2012-08-02 CN CN 201220381156 patent/CN202732592U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797741A (en) * | 2012-08-02 | 2012-11-28 | 中联重科股份有限公司 | Pin, rotation connection structure, jib connection structure and engineering machinery |
| WO2014019312A1 (en) * | 2012-08-02 | 2014-02-06 | 中联重科股份有限公司 | Pin, rotational connection structure, jib connection structure, and engineering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |