CN206860796U - A kind of inexpensive stretcher - Google Patents
A kind of inexpensive stretcher Download PDFInfo
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- CN206860796U CN206860796U CN201720727584.1U CN201720727584U CN206860796U CN 206860796 U CN206860796 U CN 206860796U CN 201720727584 U CN201720727584 U CN 201720727584U CN 206860796 U CN206860796 U CN 206860796U
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- spring
- bolt
- main spring
- maincenter
- stretcher
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Abstract
It the utility model is related to inexpensive stretcher, including pedestal, maincenter bolt, front end pad is installed in maincenter bolt front end, being surrounded in maincenter bolt periphery has main spring, main spring is locked between front end pad and pedestal, the elastic device for compressing main spring is provided between front end pad and main spring, its main spring is turned to the double-decker of Internal and external cycle by same root spring steel, the auxiliary spring that the outer ring extension solderless wrapped connection of the inner ring extension of inner ring spring steel and cycle spring steel is formed on the outside of main spring, bolt is installed in auxiliary spring, the fixing device for the installation of belt wheel assembly is provided with bolt one end.Thus, the utility model circumferentially moves back and forth by damping block and the synchronous of spring, produces damping and lasting tensile force is provided for belt, and its is simple in construction, and design is simplified, effectively reduction production and use cost, beneficial to large-scale production.
Description
Technical field
The utility model belongs to field of automobile, is related to a kind of inexpensive stretcher.
Background technology
In automobile engine accessory wheel system, the accessory wheel system driven by crankshaft pulley wheel assembly is common function knot
Structure.In train, a part of moment of torsion for exporting bent axle by polywedge bet is delivered to generator, power assistance pump for steering and air-conditioning pressure
In the equipment such as contracting machine, power is provided for the said equipment, ensures that corresponding system normally realizes its function.In train, generally make
With belt stress, in different crank torque output, ensure the tensile force of belt in effective range.
Therefore, stretcher be belt, the holding meanss commonly used on chain transmission system, be characterized in keeping belt, chain
Appropriate tensile force can be possessed in transmission process, so as to avoid belt slippage, or avoid timing belt occur to jump tooth, de- tooth and
Haul out, or prevent chain-loose, come off, mitigate sprocket wheel, chain wear.The structure of stretcher is varied, and it is substantially wrapped
Stationary structure and elastic self-regulation structure are included, wherein stationary structure is more using fixedly adjustable formula sprocket wheel regulation belt, chain
The tensioning of wheel, elastic self-regulation structure more using elastomeric element can automatic rebounding control belt, chain tensioning, the country can from
The chain tensioning device of dynamic regulation uses spring structure more, and external stretcher uses rubber components more.For from effect, use
Its construction of the stretcher of spring structure is simply cheap, therefore use is more universal, and uses the stretcher of rubber components, by
In the good elastic performance of rubber, the life-span is grown compared with spring, but its performance requirement to rubber is higher, and price is more high
It is expensive.
At present, whether domestic or external stretcher, the shortcomings that generally existing is complicated, cost is higher.There is mirror
In above-mentioned the defects of, the design people, actively it is subject to research and innovation, to found a kind of inexpensive stretcher, makes it with more production
Value in industry.
Utility model content
In order to solve the above technical problems, the purpose of this utility model be to provide it is a kind of it is simple in construction, lower-cost it is low into
This stretcher.Technical solutions of the utility model are as follows：
A kind of inexpensive stretcher, including pedestal, the maincenter bolt on pedestal, pacify in the maincenter bolt front end
Equipped with front end pad, being surrounded in maincenter bolt periphery has main spring, and main spring is locked between the front end pad and pedestal, preceding
Elastic device for compressing main spring is provided between end pad and main spring, wherein, main spring by same root spring steel around
The double-decker of Internal and external cycle is made, the inner ring extension of inner ring spring steel forms position with the outer ring extension solderless wrapped connection of cycle spring steel
Auxiliary spring on the outside of main spring, bolt is installed in the auxiliary spring, is provided with bolt one end and pacifies for belt wheel assembly
The fixing device of dress.
The utility model low cost stretcher, further, the inner ring spring steel end and cycle spring steel end are equal
It is fixed on pedestal.
The utility model low cost stretcher, further, the elastic device are damping block.
The utility model low cost stretcher, further, the thickness of the damping block are more than front end pad and main bullet
The distance between spring.
By such scheme, the utility model at least has advantages below：
By the synchronous circumferential reciprocating motion of damping block and spring, generation damping provides lasting the utility model for belt
Tensile force, its is simple in construction, and design is simplified, and production and use cost is effectively reduced, beneficial to large-scale production.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model low cost stretcher；
Fig. 2 is the partial structural diagram of the utility model low cost stretcher.
The implication of each reference is as follows in figure.
The front end pad of 1 maincenter bolt 2
The bolt of 3 belt wheel assembly 4
5 main spring 5-1 inner ring spring steel
5-2 inner rings extension 5-3 cycle spring steel
The elastic device of 5-4 outer rings extension 6
The auxiliary spring of 7 pedestal 8
8-1 fixing devices
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to the scope of the utility model.
Referring to Fig. 1, the utility model low cost stretcher, including pedestal 7, the maincenter bolt 1 on pedestal 7,
The front end of maincenter bolt 1 is provided with front end pad 2, and being surrounded in the periphery of maincenter bolt 1 has main spring 5, and main spring 5 is locked in described
Between front end pad 2 and pedestal 7, the elastic device for compressing main spring 5 is provided between front end pad 2 and main spring 5
6.Main spring 5 is turned to the double-decker of Internal and external cycle by same root spring steel, inner ring spring steel 5-1 inner ring extension 5-2 with
Cycle spring steel 5-3 outer ring extension 5-4 solderless wrapped connections form the auxiliary spring 8 positioned at the outside of main spring 5, in the auxiliary spring 8
Bolt 4 is installed, the fixing device 8-1 installed for belt wheel assembly 3 is provided with the one end of bolt 4, fixing device 8-1 is cast in
On auxiliary spring 8, reference can be made to Fig. 2, Fig. 2 are the structural representation of main spring 5 and auxiliary spring 8.
In order that the elastic device 6 for compressing main spring 5 obtains stable and enough restoring force, the inner ring spring steel 5-1
End and cycle spring steel 5-3 ends are each attached on pedestal 7.The inner ring spring steel 5-1 coilings number of turns is set to be more than described
The cycle spring steel 5-3 coiling number of turns, ensure that elastic device 6 is fixed together with main spring 5 and do synchronous circumferential reciprocating motion.
By test of many times, the elastic device 6 selects damping block.The thickness of damping block is more than front end pad 2 and main bullet
The distance between spring 5.Thus, it is ensured that elastic device 6 is that damping block compresses main spring 5, main spring 5 is provided axial push away
Power.
Utility model works principle is：Damping block pushes down the top of main spring 5, and main spring 5 provides axial thrust, will
Damping block is pressed onto on front end pad 2.Damping block and main spring 5, which are fixed together, does synchronous circumferential reciprocating motion.In motion process
In, rubbed between damping block and front end pad 2, produce damping.Belt wheel assembly 3 is bolted 4 and is fixed at auxiliary spring 8,
Lasting tensile force is provided for the belt of belt wheel assembly 3.
Therefore, by the synchronous circumferential reciprocating motion of damping block and spring, producing damping can carry the utility model for belt
For lasting tensile force, its is simple in construction, and design is simplified, and production and use cost is effectively reduced, beneficial to large-scale production.More than
Described is only preferred embodiment of the present utility model, is not limited to the utility model, it is noted that is led for this technology
For the those of ordinary skill in domain, on the premise of the utility model technical principle is not departed from, can also make it is some improvement and
Modification, these improvement and modification also should be regarded as the scope of protection of the utility model.
Claims (4)
- A kind of 1. inexpensive stretcher, it is characterised in that：Including pedestal (7), the maincenter bolt (1) on pedestal (7), Maincenter bolt (1) front end is provided with front end pad (2), and being surrounded in maincenter bolt (1) periphery has main spring (5), main spring (5) it is locked between the front end pad (2) and pedestal (7), is provided between front end pad (2) and main spring (5) for pressing The elastic device (6) of tight main spring (5), wherein, main spring (5) is turned to the double-decker of Internal and external cycle by same root spring steel, The inner ring extension (5-2) of inner ring spring steel (5-1) forms position with outer ring extension (5-4) solderless wrapped connection of cycle spring steel (5-3) Auxiliary spring (8) on the outside of main spring (5), bolt (4) is installed in the auxiliary spring (8), is provided with bolt (4) one end For the fixing device (8-1) of belt wheel assembly (3) installation.
- A kind of 2. inexpensive stretcher according to claim 1, it is characterised in that：Inner ring spring steel (5-1) end It is each attached to cycle spring steel (5-3) end on pedestal (7).
- A kind of 3. inexpensive stretcher according to claim 1, it is characterised in that：The elastic device (6) is damping block.
- A kind of 4. inexpensive stretcher according to claim 3, it is characterised in that：The thickness of the damping block is more than front end The distance between pad (2) and main spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720727584.1U CN206860796U (en) | 2017-06-20 | 2017-06-20 | A kind of inexpensive stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720727584.1U CN206860796U (en) | 2017-06-20 | 2017-06-20 | A kind of inexpensive stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860796U true CN206860796U (en) | 2018-01-09 |
Family
ID=60827547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720727584.1U Active CN206860796U (en) | 2017-06-20 | 2017-06-20 | A kind of inexpensive stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860796U (en) |
-
2017
- 2017-06-20 CN CN201720727584.1U patent/CN206860796U/en active Active
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| GR01 | Patent grant |