CN210481961U - Material distributing rod structure and paver provided with same - Google Patents
Material distributing rod structure and paver provided with same Download PDFInfo
- Publication number
- CN210481961U CN210481961U CN201920991922.1U CN201920991922U CN210481961U CN 210481961 U CN210481961 U CN 210481961U CN 201920991922 U CN201920991922 U CN 201920991922U CN 210481961 U CN210481961 U CN 210481961U
- Authority
- CN
- China
- Prior art keywords
- connection pad
- material pole
- distributing rod
- pole body
- interference fit
- 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
Images
Abstract
The utility model discloses a divide material pole structure belongs to the engineering machine tool field, including dividing material pole body and connection pad, it has the unthreaded hole that is used for installing the blade and the screw hole that is used for installing reverse blade to open on the connection pad, divide material pole body and connection pad to adopt interference fit to connect. The utility model discloses an interference fit's structural style connects branch material pole body and connection pad as whole, need not to process the keyway on branch material pole body and connection pad, and need not the welding after adopting interference fit to connect, has lacked one process than conventional branch material pole structure, practices thrift the cost, and the feature of environmental protection is better. The material distributing rod can bear larger torque, and the requirement of the spreading machine on the torque under the ultra-wide and ultra-thick working conditions is well met.
Description
Technical Field
The utility model relates to a material distributing rod structure and install its paver belongs to the engineering machine tool field.
Background
The material distributing rod is mainly used for products such as pavers, and materials are conveyed to the outer end of the rod through the helical blades arranged on the material distributing rod in the rod direction. In the construction process of the paver, when the paving width and the paving thickness are increased, the load generated by materials is increased sharply, and at the moment, a material distributing rod capable of bearing large torque is needed to meet the construction requirement.
The existing material distributing rod structure mainly comprises a material distributing rod body, a connecting disc, a flat key and the like, wherein key grooves are respectively processed on the material distributing rod body and the connecting disc, the material distributing rod body is connected with the connecting disc under the guiding and positioning action of the flat key, and then the material distributing rod body and the connecting disc are welded into a whole. The feed rod assembly with the structure is born by means of welding strength and the flat key, and meanwhile, due to the fact that the influence of weakening of the key groove, the defect of easy generation of welding and the performance reduction of parent materials caused by a heat affected zone during welding result in insufficient strength of the feed rod, under the working condition of heavy load, weld bead tearing is easy to generate, the flat key fails, and even the phenomenon of overall fracture can occur at the welding joint surface of the feed rod body and the connecting disc.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a simple structure, make convenient, the dependable performance divide material rod structure. The utility model also provides a paver of this branch material pole structure of installation.
In order to realize the purpose, the utility model discloses a pair of divide material pole structure, including dividing material pole body and connection pad, it has the unthreaded hole that is used for installing the blade and the screw hole that is used for installing reverse blade to open on the connection pad, divide material pole body and connection pad to adopt interference fit to connect.
As an improvement, a circular mounting hole is formed in the connecting disc, and the material distributing rod body is cylindrical.
As an improvement, the diameter of the material distributing rod body is larger than that of the circular mounting hole in the connecting disc.
In addition, the utility model also provides an install the paver of branch material pole structure.
Compared with the prior art, the utility model discloses an interference fit's structural style connects branch material pole body and connection pad as whole, need not to process the keyway on branch material pole body and connection pad, and need not the welding after adopting interference fit to connect, has less one process than conventional branch material pole structure, practices thrift the cost, and the feature of environmental protection is better. The material distributing rod can bear larger torque, and the requirement of the spreading machine on the torque under the ultra-wide and ultra-thick working conditions is well met.
Drawings
FIG. 1 is a schematic view of the material distributing rod of the present invention;
in the figure: 1. unthreaded hole, 2, branch material pole body, 3, connection pad, 4, screw hole, L, effective cooperation length, D1Diameter of the container, D2And a fitting diameter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, a material distributing rod structure comprises a material distributing rod body 2 and a connecting disc 3, wherein an unthreaded hole 1 for installing a blade and a threaded hole 4 for installing a reverse blade are formed in the connecting disc 3, the blades are connected in a conventional mode, and the material distributing rod body 2 and the connecting disc 3 are connected in an interference fit mode.
As an improvement of the embodiment, a circular mounting hole is formed in the connecting disc 3, and the feed rod body 2 is cylindrical. The interference fit is realized by connecting the cylindrical feed rod body 2 with the circular mounting hole in the connecting disc 3, and preferably, the diameter (namely D) of the feed rod body 22) Is larger than the diameter of the circular mounting hole in the connecting disc 3.
As an improvement of the embodiment, one end of the feed rod body 2 is arranged in the connecting disc 3 in an interference fit mode, and the effective fit length L and the fit diameter D of the mounting end2Diameter D of the container1And calculating the interference magnitude according to the requirement of construction load torque.
As an improvement of the embodiment, the feed rod body 2 is assembled in the connecting disc 3 by adopting a temperature difference method, when the temperature difference method is adopted, the connecting disc 3 is an accommodating piece, and the feed rod body 2 is an accommodated piece. The implementation method of the temperature difference method comprises the following steps: heating the containing piece in an electric furnace, a gas furnace or hot oil; cooling the contained part by using dry ice, liquid air or placing the contained part in a low-temperature box; the containing member and the contained member can also be heated at the same time. In this example, the container, the terminal plate, was heated to about 250 ℃ for mounting.
The material distributing rod body 2 can also be assembled in the connecting disc 3 by adopting a conventional method, such as pressing in hair, the method has simple process, but the matching surface is easy to damage, the connection tightness is weakened, and the method is suitable for occasions with small interference or size.
The utility model also provides an install the paver of branch material pole structure.
Example 1
When the required construction load is T10000 n.m, the effective matching length L and the matching diameter D can be changed respectively2Diameter D of the container1And realizing the design requirement by matching with the interference magnitude, wherein the specific calculation mode is as follows, wherein the units related to the calculation items are respectively as follows:
torque: n.m, diameter: mm, matching length: mm, pressure: mpa, interference: mm, modulus of elasticity: mpa, yield strength: mpa (Mpa)
The implementation case is as follows: effective mating length L, mating diameter D2Diameter D of the container1And determining and calculating the fit interference delta.
1. Minimum combined pressure P required for load transferfmin
In the formula: t — torque delivered, T10000; l-effective fit length, L170; d2-fitting diameter, D270; μ — coefficient of friction of the friction pair of the connected member, μ ═ 0.1 (available from table lookup).
2. Minimum interference delta required for load transmissionemin
δemin＝eamin+eimin
In the formula, eamin-minimum diameter variation required for the containment element to transmit the load; e.g. of the typeiminMinimum diameter variation required for the contained element to transmit the load.
2.1 minimum diameter variation e required for the containment to transmit the loadamin
In the formula, Ea-the modulus of elasticity of the material of the containment member,
wherein q isa-the ratio of the diameters to the diameters,
D1diameter of containment part, D1＝120，
vaContainment material Poisson's ratio, va＝0.3。
From the above, it can be seen that:
2.2 minimum diameter Change e required for the contained Member to transfer the loadimin
In the formula, EiModulus of elasticity of the material of the article to be accommodated, Ei＝210000；
Wherein q isi-the ratio of the diameters to the diameters,
diinner diameter of the part to be enclosed, in this case a solid shaft, take diQ is 0i＝0；viPoisson's ratio, v, of the material of the enclosed memberi＝0.3。
From the above, it can be seen that:
in summary, the minimum interference required to transmit the load:
δemin＝eamin+eimin＝0.055
3. maximum bonding pressure P allowed by plastic deformation of containing piece, contained piece and component assemblyfamax、PfimaxAnd Pfmax。
3.1 maximum bonding pressure P allowed by the containment without plastic deformationfamax
Pfamax＝aσa
In the formula, σaContainment yield strength, σa＝785；
Pfamax＝aσa＝283.36
3.2 maximum bonding pressure P allowed by the fact that the contained member does not generate plastic deformationfimax
Pfimax＝cσi
In the formula, σiYield strength of the enclosed part, σi＝785；
Pfimax＝cσi＝392.50
3.3 maximum allowable combination pressure P for load transferfmaxGet PfamaxAnd PfimaxThe smaller of these.
Pfmax＝Min(Pfamax、Pfimax)＝283.36
4. The maximum diameter variation e allowed by the container and the accommodated piece without generating plastic deformationamaxAnd eimax。
From the above, can be obtained: maximum effective interference delta allowed by no plastic deformation of component assemblyemax
δemax＝eamax+eimax＝0.2855
5. The basic interference δ is generally taken as:
when more reserve of connection strength is required, the basic interference magnitude δ is taken as:
δ＜δemax＝0.2855
for review: according to the above calculation method, the effective fitting length L and the fitting diameter D can be adjusted2Diameter D of the container1The different fit interference delta is obtained to meet the load torque requirement.
Example 2
When the material distributing rod body 2 is assembled in the connecting disc 3 by adopting a temperature difference method, the method comprises the following specific steps:
a. heating the connecting disc to about 250 ℃ by using a power frequency induction heater;
b. and (4) taking down the connecting disc by using special equipment, and loading the connecting disc into the material distributing rod body.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (4)
1. The utility model provides a divide material pole structure, is including dividing material pole body (2) and connection pad (3), it has unthreaded hole (1) that are used for installing the blade and screw hole (4) that are used for installing reverse blade to open on connection pad (3), its characterized in that, divide material pole body (2) and connection pad (3) to adopt interference fit to connect.
2. A distributing rod structure according to claim 1, characterized in that the connecting disc (3) has a circular mounting hole formed therein, and the distributing rod body (2) is cylindrical.
3. A distribution rod structure according to claim 2, characterized in that the diameter of the distribution rod body (2) is larger than the diameter of the circular mounting hole in the connection disc (3).
4. A paver characterized in that the paver is equipped with a feed bar construction according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991922.1U CN210481961U (en) | 2019-06-28 | 2019-06-28 | Material distributing rod structure and paver provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991922.1U CN210481961U (en) | 2019-06-28 | 2019-06-28 | Material distributing rod structure and paver provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210481961U true CN210481961U (en) | 2020-05-08 |
Family
ID=70528940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920991922.1U Active CN210481961U (en) | 2019-06-28 | 2019-06-28 | Material distributing rod structure and paver provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210481961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258257A (en) * | 2019-06-28 | 2019-09-20 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of sub-material rod structure and the paver for installing it |
-
2019
- 2019-06-28 CN CN201920991922.1U patent/CN210481961U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258257A (en) * | 2019-06-28 | 2019-09-20 | 徐工集团工程机械股份有限公司道路机械分公司 | A kind of sub-material rod structure and the paver for installing it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2349339A1 (en) | Improved method of solid state welding and welded parts | |
| CN210481961U (en) | Material distributing rod structure and paver provided with same | |
| CN110524105A (en) | A kind of rotation soldering set and welding method for friction welding (FW) | |
| CN201285248Y (en) | Connection structure of heat exchanger pipe and pipe plate | |
| CN208067707U (en) | A kind of simple wire bushing interference mounting tool | |
| CN207486312U (en) | A kind of compensator Fast Installation detaching structure | |
| CN204014127U (en) | A kind of block heater | |
| Zhu et al. | Investigation of the feasibility and effectiveness in using heat pipe-embedded drills by finite element analysis | |
| CN219838210U (en) | Plastic pipe thermal fusion welding machine | |
| CN201850299U (en) | Lining plate nitrogen treatment anti-deformation tooling | |
| EP2406503A1 (en) | A sleeve | |
| CN206846181U (en) | A kind of band pressure pipeline perforations adding device | |
| CN206961789U (en) | Rotating anode arrangement | |
| CN205331381U (en) | Adjustable electric actuator | |
| CN205270379U (en) | Rolling mill and connection structure of roll and roll axle thereof | |
| CN210026351U (en) | Heating device for hot-melting butt welding machine | |
| CN2929421Y (en) | No-resistance axial compensator | |
| CN207057789U (en) | A kind of inner heating type electric iron head suitable for intensive solder joint in narrow space | |
| CN104708584A (en) | Truck brake pipeline three-piece installation compressing tool | |
| CN206335860U (en) | Heat head | |
| CN207569086U (en) | A kind of motor shaft and the keyless structure of gear | |
| CN204450586U (en) | A kind of robot | |
| CN108162416A (en) | A kind of hot-melting connection device of plastic tube | |
| CN105014581A (en) | Flexible shaft type spanner | |
| CN206393086U (en) | A kind of anticorrosion electric welding machine ready-packaged joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |