CN204533404U - A kind of stretcher - Google Patents
A kind of stretcher Download PDFInfo
- Publication number
- CN204533404U CN204533404U CN201520235953.6U CN201520235953U CN204533404U CN 204533404 U CN204533404 U CN 204533404U CN 201520235953 U CN201520235953 U CN 201520235953U CN 204533404 U CN204533404 U CN 204533404U
- Authority
- CN
- China
- Prior art keywords
- spring
- pivoted arm
- drain pan
- damping
- stretcher
- 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.)
- Expired - Fee Related
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- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to technical field of transmission, particularly relates to a kind of stretcher, comprises; Base (1); Pivoted arm (2); Idle wheel (3); Damping piece (4); Spring (7); Supporting frame (8); Described drain pan (5) is provided with and makes spring (7) keep the cushion block (9) of balance for supported spring (7).This stretcher using effect is better.
Description
Technical field
The utility model relates to technical field of transmission, particularly relates to a kind of stretcher.
Background technique
Stretcher is holding device conventional on belt, chain transmission system, be characterized in keeping belt, chain can have suitable tension force in transmission process, thus avoid belt slippage, or avoid Timing Belt to occur to jump tooth, take off tooth and haul out, or prevent chain-loose, come off, alleviate sprocket wheel, chain wear.
Stretcher comprises base, pivoted arm, damping piece, supporting frame, spring and Idle wheel, described damping piece, supporting frame and spring are arranged between base and pivoted arm, described Idle wheel is arranged on pivoted arm, contact friction is had between damping piece and pivoted arm, the damping sleeve that the damping piece of prior art comprises the spacing drain pan on base of circumference and is arranged on drain pan, spring is enclosed within outside damping sleeve, spring upper end and pivoted arm offset, lower spring end and drain pan offset, but because spring all only has a point of contact to contact with pivoted arm or drain pan up and down, so spring may tilt after placing, such stretcher in use effect is not fine.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of using effect good stretcher.
The technological scheme that the utility model adopts is: a kind of stretcher, comprises;
Base;
Pivoted arm, is rotatably connected on base;
Idle wheel, is rotatably connected on pivoted arm;
Damping piece, comprises the spacing drain pan on base of circumference and is arranged on damping sleeve contact on drain pan and with pivoted arm, for providing the friction damping force stopping pivoted arm rotation;
Spring, between described drain pan and pivoted arm, and described spring housing is located at outside damping sleeve, makes it extend out direction motion towards described spring for pivoted arm described in bias voltage;
Supporting frame, is set between damping sleeve and spring, because of spring direct squeezed air-damping cover, damping sleeve is damaged for preventing;
Described drain pan is provided with and makes spring keep the cushion block of balance for supported spring.
Adopt above structure compared with prior art, have the following advantages: on drain pan, be provided with cushion block, such spring is placed on after on drain pan and places relatively steadily, and stretcher in use spring can not rock, and namely makes stretcher using effect better.
As preferably, the cushion block on described drain pan has two pieces, and the height of described two pieces of cushion blocks and spring place after height adapt.Two cushion blocks are set, and the height of two cushion blocks and spring place after height adapt, can better spring be coordinated like this, make spring place more steady.
As preferably, described pivoted arm is also provided with and makes spring keep the cushion block of balance for supported spring.Such spring upper end also has cushion block to support, more stable when spring is placed.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of a kind of stretcher of the utility model.
Fig. 2 be a kind of stretcher of the utility model wherein a part schematic diagram.
Fig. 3 is the worm's eye view of the pivoted arm of a kind of stretcher of the utility model.
As shown in the figure: 1, base; 2, pivoted arm; 3, Idle wheel; 4, damping piece; 5, drain pan; 6, damping sleeve; 7, spring; 8, supporting frame; 9, cushion block.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further, but the utility model is not limited only to following embodiment.
As shown in the figure: a kind of stretcher, comprises;
Base 1;
Pivoted arm 2, is rotatably connected on base 1;
Idle wheel 3, is rotatably connected on pivoted arm 2;
Damping piece 4, comprises the spacing drain pan 5 on base 1 of circumference and is arranged on the damping sleeve 6 contact on drain pan 5 and with pivoted arm 2, for providing the friction damping force stopping pivoted arm 2 rotation;
Spring 7, between described drain pan 5 and pivoted arm 2, and described spring 7 is set in outside damping sleeve 6, makes it extend out direction motion towards described spring 7 for pivoted arm described in bias voltage 2;
Supporting frame 8, is set between damping sleeve 6 and spring 7, because of spring 7 direct squeezed air-damping cover 6, damping sleeve 6 is damaged for preventing;
Described drain pan 5 is provided with and makes spring 7 keep the cushion block 9 of balance for supported spring 7.
Cushion block 9 on described drain pan 5 has two pieces, and the height of described two pieces of cushion blocks 9 and spring 7 place after height adapt.
Described pivoted arm 2 is also provided with and makes spring 7 keep the cushion block 9 of balance for supported spring 7.
Working principle of the present utility model is: be placed into by spring after on drain pan 5, and spring 7 one points can contact with drain pan 5, and cushion block 9 can make spring 7 to topple over other location contacts of spring 7 and then supported spring 7.
Claims (3)
1. a stretcher, comprises;
Base (1);
Pivoted arm (2), is rotatably connected on base (1);
Idle wheel (3), is rotatably connected on pivoted arm (2);
Damping piece (4), comprises the spacing drain pan (5) on base (1) of circumference and is arranged on the upper and damping sleeve (6) contacted with pivoted arm (2) of drain pan (5), for providing the friction damping force stopping that pivoted arm (2) rotates;
Spring (7), is positioned between described drain pan (5) and pivoted arm (2), and described spring (7) is set in damping sleeve (6) outward, makes it extend out direction motion towards described spring (7) for pivoted arm described in bias voltage (2);
Supporting frame (8), is set between damping sleeve (6) and spring (7), because of spring (7) direct squeezed air-damping cover (6), damping sleeve (6) is damaged for preventing;
It is characterized in that: described drain pan (5) is provided with and makes spring (7) keep the cushion block (9) of balance for supported spring (7).
2. a kind of stretcher according to claim 1, is characterized in that: the cushion block (9) on described drain pan (5) has two pieces, and the height of described two pieces of cushion blocks (9) and spring (7) place after height adapt.
3. a kind of stretcher according to claim 1, is characterized in that: described pivoted arm (2) is also provided with and makes spring (7) keep the cushion block (9) of balance for supported spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520235953.6U CN204533404U (en) | 2015-04-20 | 2015-04-20 | A kind of stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520235953.6U CN204533404U (en) | 2015-04-20 | 2015-04-20 | A kind of stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533404U true CN204533404U (en) | 2015-08-05 |
Family
ID=53747413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520235953.6U Expired - Fee Related CN204533404U (en) | 2015-04-20 | 2015-04-20 | A kind of stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533404U (en) |
-
2015
- 2015-04-20 CN CN201520235953.6U patent/CN204533404U/en not_active Expired - Fee Related
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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: 20150805 Termination date: 20180420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |