CN204344837U - Chain rigidity controlling device - Google Patents
Chain rigidity controlling device Download PDFInfo
- Publication number
- CN204344837U CN204344837U CN201420731252.7U CN201420731252U CN204344837U CN 204344837 U CN204344837 U CN 204344837U CN 201420731252 U CN201420731252 U CN 201420731252U CN 204344837 U CN204344837 U CN 204344837U
- Authority
- CN
- China
- Prior art keywords
- driver part
- rotatable parts
- rotationally connected
- controlling device
- chain
- 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
Links
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model discloses a kind of chain rigidity controlling device, relate to engineering machinery field, the problem that the pretightening force in order to solve chain drive in prior art cannot conveniently regulate.This device comprises rotatable parts and driver part; Rotatable parts have first and are rotationally connected position and second and are rotationally connected position, and wherein first be rotationally connected position for being connected with wheel turns to be moved, second is rotationally connected position for being connected with fixed component; Driver part drives with rotatable parts and is connected, and driver part rotates for driving rotatable parts to be rotationally connected position around second.The chain rigidity controlling device that technique scheme provides, rotatable parts can be driven to rotate by driver part, thus drive wheel to be moved and then to rotate, after wheel turns to be moved, it also changes in the position in chain length direction, thus realizes the adjustment to chain rigidity.
Description
Technical field
The utility model relates to engineering machinery field, is specifically related to a kind of chain rigidity controlling device.
Background technique
For the bridge-checking vehicle of some structures, the chain of chain transmission is long, and from great, the pretightening force of applying is large.Under chain is in large pretightening force for a long time, during vehicle ride, the speed of chain fatigue ruption can be accelerated.When chain works under full-loading condition, if pretightening force does not reach requirement, there will be the phenomenon of slip teeth.
Specifically, the telescopic boom drive unit of bridge-checking vehicle working platform is chain transmission, and as shown in Figure 1, this device comprises chain 31, guard shield 32, follower 33,38 and driving wheel 36.Two followers 33,38 are rotationally connected respectively by follower revolute pair 34,37 and guard shield 32, and driving wheel 36 is rotationally connected by driving wheel revolute pair 35 and guard shield 32.Chain 31 is connected with cantilever arm, and other parts (as sprocket wheel, guard shield 32 etc.) are connected with fixed arm, realize stretching out and retraction of cantilever arm during work by the sense of rotation of motor control driving wheel (breast wheel) 36.
Inventor finds, at least there is following problems in prior art: bridge-checking vehicle working platform is long, the chain applied is long.During fully loaded work, the inner arm that there will be the telescopic boom of some bridge-checking vehicle cannot retract, and the situation that driving wheel skids occurs, and manually regulating tie bar screw of now having to, to be adjusted to desirable pretightening force, reaches the object regaining inner arm.But adopt the pretightening force of manual mode adjusting chain, it is very inconvenient to operate.Because the pretightening force of chain cannot regulate easily, when comparatively large amplitude fluctuation occurs in travelling bridge-checking vehicle, the chain being applied with larger pretightening force can accelerate the fatigue damage of chain.
Model utility content
One of them object of the present utility model proposes a kind of chain rigidity controlling device, the problem that the pretightening force in order to solve chain drive in prior art cannot conveniently regulate.
For achieving the above object, the utility model provides following technological scheme:
The utility model provides a kind of chain rigidity controlling device, comprising: rotatable parts and driver part;
Described rotatable parts have first and are rotationally connected position and second and are rotationally connected position, and wherein first be rotationally connected position for being connected with wheel turns to be moved, described second is rotationally connected position for being connected with fixed component;
Described driver part drives with described rotatable parts and is connected, and described driver part rotates for driving described rotatable parts to be rotationally connected position around described second.
Chain rigidity controlling device as above, preferably, described rotatable parts are rocking arm;
Described rocking arm is triangle platy structure, and wherein, described first is rotationally connected position and described second is rotationally connected wherein two summits place that position lays respectively at described triangle platy structure.
Chain rigidity controlling device as above, preferably, described driver part comprises oil cylinder;
The piston rod of described oil cylinder and cylinder barrel one of them and described rocking arm are rotationally connected, the piston rod of described oil cylinder and cylinder barrel wherein another for being rotationally connected with described fixed component;
The stretching out of piston rod of described oil cylinder drives described rocking arm to rotate with energy of retraction.
Chain rigidity controlling device as above, preferably, described driver part also comprises control valve;
Described control valve is connected with described oil cylinder, and described control valve is for controlling the stretching out of described cylinder piston rod, bouncing back.
Chain rigidity controlling device as above, preferably, described control valve is three-position four-way valve;
Described three-position four-way valve has filler opening, oil outlet, the first actuator port and the second actuator port;
Described first actuator port is communicated with the rodless cavity of described oil cylinder, and described second actuator port is communicated with the rod chamber of described oil cylinder;
Wherein, when described three-position four-way valve is in the first working position, the rodless cavity oil-feed of described oil cylinder; When described three-position four-way valve is in the second working position, the rod chamber oil-feed of described oil cylinder.
Chain rigidity controlling device as above, preferably, described driver part also comprises oil pump and relief valve;
Described oil pump is communicated with the filler opening of described control valve, on the oil circuit between the filler opening that described relief valve is arranged on described oil pump and described control valve.
Chain rigidity controlling device as above, preferably, the oil circuit between the filler opening of described oil pump and described control valve is also provided with throttle valve.
Chain rigidity controlling device as above, preferably, described oil cylinder is the oil cylinder with initial tension of spring.
Chain rigidity controlling device as above, preferably, the quantity of described rotatable parts is at least two, and the quantity of described driver part is a set of;
Described driver part is connected with each described rotatable parts by linkage mechanism.
Chain rigidity controlling device as above, preferably, the quantity of described rotatable parts and the quantity one_to_one corresponding of described driver part, and a set of described driver part is for driving described rotatable parts.
Based on technique scheme, the utility model embodiment at least can produce following technique effect:
The chain rigidity controlling device that technique scheme provides, can drive rotatable parts to rotate by driver part, thus drives wheel to be moved and then to rotate, and after wheel turns to be moved, it also changes in the position in chain length direction.Driver part drives rotatable parts to rotate towards a direction, can increase the pretightening force of the chain at wheel place to be moved; Driver part drives rotatable parts to rotate in the opposite direction, can reduce the pretightening force of the chain at wheel place to be moved, thus achieve the adjustment to chain rigidity easily.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of chain transmission in prior art;
Fig. 2 is applied in the schematic diagram on chain transmission for chain rigidity controlling device that the utility model embodiment provides;
The principle schematic of driver part in the chain rigidity controlling device that Fig. 3 provides for the utility model embodiment.
Reference character:
1, chain; 2, guard shield; 3, revolute pair
4, rocking arm; 5, revolute pair; 6, follower;
7, driving wheel; 8, driving wheel revolute pair; 9, follower;
10, revolute pair; 11, rocking arm; 12, revolute pair;
13, revolute pair; 14, piston rod; 15, cylinder barrel;
16, revolute pair; 17, revolute pair; 18, cylinder barrel;
19, piston rod; 20, revolute pair; 21, relief valve;
22, control valve; 23, rodless cavity; 24, rod chamber;
25, throttle valve; 26, oil pump; 31, chain;
32, guard shield; 33, follower; 34, follower revolute pair;
35, driving wheel revolute pair; 36, driving wheel; 37, follower revolute pair;
38, follower.
Embodiment
Below in conjunction with the elaboration that Fig. 2 ~ Fig. 3 carries out specifically to the technological scheme that the utility model provides, the arbitrary technological means provided by the utility model carries out technological scheme that two or more technological means any of replacing or being provided by the utility model or technical characteristics carry out mutually combining and obtain all should within protection domain of the present utility model.
The utility model embodiment provides a kind of chain rigidity controlling device, for applying pretightening force to the chain 1 on chain transmission, and can regulate the size of pretightening force as required.In the present embodiment, be clear description, so that above-mentioned chain rigidity controlling device is applied on the chain transmission shown in Fig. 2.
The utility model embodiment provides a kind of chain rigidity controlling device, comprises rotatable parts and driver part.Rotatable parts have first and are rotationally connected position and second and are rotationally connected position, wherein first be rotationally connected position for being rotationally connected with wheel to be moved (corresponding to follower 6,9), second is rotationally connected position for being connected with fixed component (corresponding to guard shield 2).Driver part drives with rotatable parts and is connected, and driver part rotates for driving rotatable parts to be rotationally connected position around second.
The effect of rotatable parts drives wheel to be moved to change its position at chain 1 length direction, to make chain 1 tensioning or to loosen, also just corresponds to and increase pretightening force or reduce pretightening force.Rotatable parts can adopt various structures form, such as platy structure, rod-like structure, frame structure etc.
Driver part rotates for driving rotatable parts, and it can adopt the linkage mechanism etc. of oil cylinder, cylinder, translator.
The chain rigidity controlling device that technique scheme provides, rotatable parts can be driven to rotate by driver part, thus drive wheel to be moved and then to rotate, after wheel turns to be moved, it also changes in the position of chain 1 length direction, be tensioned to make chain or loosen, thus realizing the adjustment to chain rigidity.It should be noted that, when chain 1 need increase or reduce pretightening force, the length of chain 1 tensioning or the length loosened are generally several millimeter.
See Fig. 2, in the present embodiment, the quantity of rotatable parts and the quantity one_to_one corresponding of driver part, and a set of driver part is for driving rotatable parts.
Specifically, in the present embodiment, chain transmission has two followers 6,9, is provided with separately rocking arm and driver part for each follower.
See Fig. 2, rotatable parts are specially Rocker arm 4,11, the corresponding driving wheel 6 of Rocker arm 4, the corresponding driving wheel 9 of rocking arm 11.Rocker arm 4,11 is triangle platy structure, wherein, first be rotationally connected position (corresponding to revolute pair 5,10) and second and be rotationally connected wherein two summits place that position (corresponding to revolute pair 3,12) lays respectively at triangle platy structure.
For ease of arranging driver part, in the present embodiment, three summits place of Rocker arm 4 is rotationally connected with follower 6, guard shield 2, driver part (piston rod 14 corresponding to oil cylinder) respectively.Driver part can drive Rocker arm 4 to rotate around revolute pair 3 place.Rocking arm 11 is in like manner driven.
See Fig. 2, herein, driver part specifically comprises oil cylinder.Hold above-mentioned, there are two oil cylinders herein, both the piston rod 14 of one of them oil cylinder and cylinder barrel 15 one of them and Rocker arm 4 are rotationally connected, both the piston rod 14 of oil cylinder and cylinder barrel 15 wherein another for being rotationally connected with fixed component (corresponding to guard shield 2), specifically adopt piston rod 14 and Rocker arm 4 to be rotationally connected herein, cylinder barrel 15 and guard shield 2 are rotationally connected.The stretching out of piston rod 14 of oil cylinder drives Rocker arm 4 to rotate with energy of retraction.Both the piston rod 19 of another oil cylinder and cylinder barrel 18 one of them and rocking arm 11 are rotationally connected, both the piston rod 19 of oil cylinder and cylinder barrel 18 wherein another for being rotationally connected with fixed component (corresponding to guard shield 2).Specifically adopt piston rod 19 and rocking arm 11 to be rotationally connected herein, cylinder barrel 18 and guard shield 2 are rotationally connected.The stretching out of piston rod 19 of oil cylinder drives rocking arm 11 to rotate with energy of retraction.
Wherein the piston rod 14 of an oil cylinder stretches out and Rocker arm 4 can be driven to rotate clockwise, and energy of retraction drives Rocker arm 4 to rotate counterclockwise.The piston rod 19 of another oil cylinder stretches out and rocking arm 11 can be driven to rotate counterclockwise, and energy of retraction drives rocking arm 11 to rotate clockwise.
Further, driver part also comprises control valve 22.Control valve 22 is connected with oil cylinder, and control valve 22 is for controlling the stretching out of cylinder piston rod, bouncing back.There are two oil cylinders herein, one control valve can be set respectively for each oil cylinder.In the present embodiment, so that the oil cylinder being positioned at left side in control valve 22 control graph 2 is described.
Specifically, control valve 22 can adopt three-position four-way valve.Three-position four-way valve has filler opening, oil outlet, the first actuator port and the second actuator port.First actuator port is communicated with the rodless cavity 23 of oil cylinder, and the second actuator port is communicated with the rod chamber 24 of oil cylinder.Wherein, when three-position four-way valve is in the first working position (in Fig. 3 left position), rodless cavity 23 oil-feed of oil cylinder; When three-position four-way valve is in the second working position (in Fig. 3 right position), rod chamber 24 oil-feed of oil cylinder.
Before chain 1 is started working, three-position four-way valve is transferred to right position, make rod chamber 24 be in high pressure conditions, rodless cavity 23 is in low-pressure state, and oil cylinder shrinks, and drives follower 6 to move obliquely upward, reaches the object increasing pretightening force.When reaching desirable pretightening force, three-position four-way valve is in meta.
After chain 1 is finished the work, three-position four-way valve is transferred to left position, make rod chamber 24 be in low-pressure state, rodless cavity 23 is in high pressure conditions, and the piston rod 14 of oil cylinder stretches out, and drives follower 6 oliquely downward to move, reaches the object reducing pretightening force.When reaching desirable pretightening force, three-position four-way valve is in meta.
Visible, technique scheme, during chain 1 working state, can regulate chain rigidity according to different operating modes, makes pretightening force reach perfect condition, avoid the situation occurring slip teeth.During chain 1 off working state, adjusting chain pretightening force, to chain 1 safe condition, reduces fatigue ruption.
Driver part also comprises oil pump 26 and relief valve 21.Oil pump 26 is communicated with the filler opening of control valve 22, on the oil circuit between the filler opening that relief valve 21 is arranged on oil pump and control valve 22.Relief valve 21 can ensure the Security that whole system uses.The motor hydraulic system of the desirable self-driven chain 1 of hydraulic power of this device oil pump, the cost of increase is low.
Further, the oil circuit between the filler opening of oil pump 26 and control valve 22 is also provided with throttle valve 25.
For the operating mode that some load is constant, the pretightening force of chain 1 can be set at a certain particular value, and now, oil cylinder can adopt the oil cylinder with initial tension of spring.
Installation when the chain rigidity controlling device being described in further detail technique scheme and providing below in conjunction with Fig. 2 is applied on chain transmission.
Chain transmission comprises chain 1, guard shield 2, be arranged on follower on guard shield 26,9, driving wheel 7.Two followers 6,9 are rotationally connected respectively by follower revolute pair 5,10 and guard shield 2, and driving wheel 7 is rotationally connected by driving wheel revolute pair 8 and guard shield 2.
Be connected by revolute pair 3 between Rocker arm 4 with guard shield 2, be connected by revolute pair 12 between rocking arm 11 with guard shield 2.Be connected by revolute pair 13 between Rocker arm 4 with piston rod 14, be connected by revolute pair 20 between rocking arm 11 with piston rod 19.Be connected by revolute pair 5 between Rocker arm 4 with follower 6, be connected by revolute pair 10 between rocking arm 11 with follower 9.Be connected by revolute pair 16 between cylinder barrel 15 with guard shield 2, be connected by revolute pair 17 between cylinder barrel 18 with guard shield 2.
Be understandable that, in above-described embodiment, for the quantity one_to_one corresponding of the quantity of rotatable parts and driver part, but be not limited thereto.In fact, even if having two even more followers, rocking arm and follower one_to_one corresponding, the quantity of driver part also can only use a set of, adopt this set of driver part to drive each rocking motion respectively by linkage mechanism, also can realize the change of each follower position.Namely the quantity of rotatable parts is at least two, and the quantity of driver part is a set of.Driver part is connected with each rotatable parts by linkage mechanism.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only for ease of describing the utility model and simplified characterization, instead of instruction or infer the device of indication or element must have specific orientation, for specific azimuth configuration and operation, thus the restriction to the utility model protection content can not be interpreted as.
If employ the word such as " first ", " second " herein to limit component, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe the utility model and simplified characterization, as do not stated in addition, the implication that above-mentioned word is not special.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope of the utility model request protection.
Claims (10)
1. a chain rigidity controlling device, is characterized in that, comprising: rotatable parts and driver part;
Described rotatable parts have first and are rotationally connected position and second and are rotationally connected position, and wherein first be rotationally connected position for being connected with wheel turns to be moved, described second is rotationally connected position for being connected with fixed component;
Described driver part drives with described rotatable parts and is connected, and described driver part rotates for driving described rotatable parts to be rotationally connected position around described second.
2. chain rigidity controlling device according to claim 1, is characterized in that, described rotatable parts are rocking arm;
Described rocking arm is triangle platy structure, and wherein, described first is rotationally connected position and described second is rotationally connected wherein two summits place that position lays respectively at described triangle platy structure.
3. chain rigidity controlling device according to claim 2, is characterized in that, described driver part comprises oil cylinder;
The piston rod of described oil cylinder and cylinder barrel one of them and described rocking arm are rotationally connected, the piston rod of described oil cylinder and cylinder barrel wherein another for being rotationally connected with described fixed component;
The stretching out of piston rod of described oil cylinder drives described rocking arm to rotate with energy of retraction.
4. chain rigidity controlling device according to claim 3, is characterized in that, described driver part also comprises control valve;
Described control valve is connected with described oil cylinder, and described control valve is for controlling the stretching out of described cylinder piston rod, bouncing back.
5. chain rigidity controlling device according to claim 4, is characterized in that, described control valve is three-position four-way valve;
Described three-position four-way valve has filler opening, oil outlet, the first actuator port and the second actuator port;
Described first actuator port is communicated with the rodless cavity of described oil cylinder, and described second actuator port is communicated with the rod chamber of described oil cylinder;
Wherein, when described three-position four-way valve is in the first working position, the rodless cavity oil-feed of described oil cylinder; When described three-position four-way valve is in the second working position, the rod chamber oil-feed of described oil cylinder.
6. chain rigidity controlling device according to claim 5, is characterized in that, described driver part also comprises oil pump and relief valve;
Described oil pump is communicated with the filler opening of described control valve, on the oil circuit between the filler opening that described relief valve is arranged on described oil pump and described control valve.
7. chain rigidity controlling device according to claim 6, is characterized in that, the oil circuit between the filler opening of described oil pump and described control valve is also provided with throttle valve.
8. chain rigidity controlling device according to claim 3, is characterized in that, described oil cylinder is the oil cylinder with initial tension of spring.
9., according to the arbitrary described chain rigidity controlling device of claim 1-8, it is characterized in that, the quantity of described rotatable parts and the quantity one_to_one corresponding of described driver part, and a set of described driver part is for driving described rotatable parts.
10., according to the arbitrary described chain rigidity controlling device of claim 1-8, it is characterized in that, the quantity of described rotatable parts is at least two, and the quantity of described driver part is a set of;
Described driver part is connected with each described rotatable parts by linkage mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731252.7U CN204344837U (en) | 2014-11-27 | 2014-11-27 | Chain rigidity controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731252.7U CN204344837U (en) | 2014-11-27 | 2014-11-27 | Chain rigidity controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344837U true CN204344837U (en) | 2015-05-20 |
Family
ID=53228108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420731252.7U Expired - Fee Related CN204344837U (en) | 2014-11-27 | 2014-11-27 | Chain rigidity controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204344837U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210160A (en) * | 2018-11-06 | 2019-01-15 | 清华大学 | Train tensioning apparatus and train |
| CN114543183A (en) * | 2022-01-27 | 2022-05-27 | 青岛海尔空调器有限总公司 | Embedded air conditioner |
-
2014
- 2014-11-27 CN CN201420731252.7U patent/CN204344837U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210160A (en) * | 2018-11-06 | 2019-01-15 | 清华大学 | Train tensioning apparatus and train |
| CN109210160B (en) * | 2018-11-06 | 2019-09-20 | 清华大学 | Train tensioning apparatus and train |
| CN114543183A (en) * | 2022-01-27 | 2022-05-27 | 青岛海尔空调器有限总公司 | Embedded air conditioner |
| CN114543183B (en) * | 2022-01-27 | 2024-04-19 | 青岛海尔空调器有限总公司 | Embedded air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69920452T2 (en) | MOBILE WORK MACHINE | |
| CN204344837U (en) | Chain rigidity controlling device | |
| EP2840252B1 (en) | Hydrostatic motor | |
| CN201604624U (en) | Tow type concrete pump and hydraulic control system of landing legs thereof | |
| US20240043257A1 (en) | Floating device for aerial work platform | |
| CN106224409A (en) | Belt brake | |
| CN204282425U (en) | A kind of dozer assembly and excavator | |
| CN204518366U (en) | Lifting force generation device and there is its tractor | |
| CN203296681U (en) | Rotary drilling rig pressurization system and rotary drilling rig with same | |
| CN203429541U (en) | Rear tail door floating hydraulic system | |
| WO2014161769A1 (en) | Steering engine | |
| CN104488388A (en) | Lifting force generating device and tractor adopting lifting force generating device | |
| CN104179460B (en) | The tower frame lifting device of rotary drill | |
| CN202988617U (en) | Rotary hydraulic system of engineering machine and engineering machine | |
| DE3412871A1 (en) | CONTROL DEVICE FOR A DRIVE UNIT | |
| CN108506275A (en) | A kind of castor hybrid hydraulic pedipulator and control method | |
| CN103978864B (en) | A kind of twins lift bridge hydraulic lifting controls system | |
| CN104265464B (en) | Engine throttle controlling organization | |
| CN202106656U (en) | Round net head for wallpaper round-net printer | |
| CN202266523U (en) | Double-regulator loader speed changing operating valve | |
| DE3035152C2 (en) | IC engine hydrostatic transmission control - has setting element of engine connected to piston displaceable in control cylinder and selectively supplied from one of two pressure fluid g | |
| CN202587794U (en) | Tillage depth control mechanism for tractor | |
| CN112096692A (en) | Double-hydraulic-cylinder driving swing device | |
| CN204267398U (en) | A kind of road containing two_stage flow pressure-gradient control valve group widens machine scraper | |
| CN203808825U (en) | Crawler type long spiral drilling machine and chassis device thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20191127 |