CN202368548U - Engineering machinery and flexible starting device of supporting leg thereof - Google Patents
Engineering machinery and flexible starting device of supporting leg thereof Download PDFInfo
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- CN202368548U CN202368548U CN2011205486893U CN201120548689U CN202368548U CN 202368548 U CN202368548 U CN 202368548U CN 2011205486893 U CN2011205486893 U CN 2011205486893U CN 201120548689 U CN201120548689 U CN 201120548689U CN 202368548 U CN202368548 U CN 202368548U
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- sprocket
- flexible
- supporting leg
- drive
- drive sprocket
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- 239000007858 starting material Substances 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model provides an engineering machine tool and flexible starting drive of landing leg thereof. The flexible starting device comprises: a sprocket rotation detecting unit generating a gear tooth rotation signal for indicating a rotation condition of the driving sprocket; the control part is connected with sprocket rotation detecting element electricity, includes: the starting judgment unit is used for receiving the gear tooth rotating signal, determining the starting of the driving sprocket according to the change of the gear tooth rotating signal and generating a flexible starting trigger signal; and the support leg driving unit receives the flexible starting trigger signal and controls the rotating speed of the driving chain wheel to increase from the first speed to the second speed in a linear or nonlinear mode according to the flexible starting trigger signal. The utility model discloses a start up the judgement unit and judge drive sprocket's start-up constantly and generate flexible start trigger signal, after landing leg drive unit received this flexible start trigger signal, just can control the velocity of motion of landing leg by low to high change, reduced the impact that hydraulic system received.
Description
Technical field
The utility model relates to motor control field, more specifically, relates to the flexible starter of a kind of construction machinery and equipment and supporting leg thereof.
Background technology
As shown in Figure 1; The leg section branch of construction machinery and equipment in the prior art (for example concrete pumping equipment) comprises underframe 100 ' and the supporting leg 101 ' that is arranged in the underframe 100 '; Underframe 100 ' is provided with two motors 102 ', and the mouth of each motor 102 ' is equipped with drive sprocket 103 ', on underframe 100 ', also be provided with two respectively with above-mentioned two driven sprockets 104 ' that drive sprocket 103 ' is used; Two chains 105 ' are respectively on drive sprocket that matches 103 ' and driven sprocket 104 '; Supporting leg 101 ' is fixedly attached on the chain 105 ' through connecting portion 106 ', therefore, and when moving under the drive of chain 105 ' at motor 102 '; Be connected the also movement therewith of supporting leg 101 ' on the chain 105 ', thereby realize the flexible of supporting leg.
Fig. 2 shows the hydraulic schematic diagram of motor control.As shown in Figure 2, the high pressure oil of pump 107 ' output gets into supporting leg multiway valve 110 ' through electric proportional reversing valve 109 ', can realize start and stop, rotating control to motor 102 ' through manual operation supporting leg multiway valve 110 '.Wherein, supporting leg multiway valve 110 ' has a lot of sheets, controls a plurality of cylinder actions respectively, only shows a slice valve body that is used for motor control among Fig. 2.Can know by Fig. 2; Supporting leg multiway valve 110 ' is a hand change over valve; And with jib multiway valve a 108 ' shared pressure oil-source (being pump 107 '); Therefore the constant current value set for the speed of comprehensive a plurality of cylinder actions of the current value of the electric proportional reversing valve in the jib multiway valve 108 ', promptly the speed of motor 102 ' is constant.Because the extension and contraction control of supporting leg 101 ' is to operate supporting leg multiway valve 110 ' through the mode of manual work to realize, the stroke of supporting leg 101 ' can only adopt mechanical positioner to limit, and the kinematic velocity of supporting leg 101 ' is uncontrollable.Therefore, when motor starting, can directly be changed to state by quiescence with fair speed; Therefore; Can cause hydraulic efficiency pressure system to receive bigger impact, the impact of hydraulic efficiency pressure system can aggravate the loosening of chain 105 ' and come off, and can the serious life-span that shortens motor 102 '.
The utility model content
The utility model aims to provide the flexible starter of a kind of construction machinery and equipment and supporting leg thereof, impacts big problem when starting with the leg that solves prior art.
For solving the problems of the technologies described above; According to first aspect of the utility model, a kind of flexible starter of supporting leg of construction machinery and equipment is provided, construction machinery and equipment comprises drive sprocket, driven sprocket and chain; Chain is on drive sprocket and driven sprocket, and supporting leg is connected with chain; Flexible starter comprises: the sprocket rotation detecting unit, relatively be provided with the gear teeth portion of drive sprocket or driven sprocket, and produce the gear teeth turn signal of the rotation situation that is used to indicate corresponding drive sprocket or driven sprocket; Control part is electrically connected with the sprocket rotation detecting unit, comprising: start judging unit, receive gear teeth turn signal, confirm the startup of corresponding drive sprocket or driven sprocket and produce the flexible energizing signal that starts according to the variation of gear teeth turn signal; The supporting leg driver element receives the flexible energizing signal that starts, and is increased with linear or nonlinear mode to second speed by first speed according to the rotating speed of flexibility startup energizing signal control drive sprocket.
Further, the sprocket rotation detecting unit is near switch.
Further, the sprocket rotation detecting unit is installed on the frame of sprocket rotation detecting unit.
Further, construction machinery and equipment also comprise motor and with motor bonded assembly electric proportional valve, motor and drive sprocket drive and are connected; The supporting leg driver element is through the rotating speed of the drive current control drive sprocket of control electric proportional valve.
Second aspect according to the utility model provides a kind of construction machinery and equipment, comprises supporting leg and the flexible starter that is used to control supporting leg, and this flexible starter is above-mentioned flexible starter.
Further, construction machinery and equipment is concrete pumping equipment or hoisting crane.
The utility model goes out the startup moment of drive sprocket and generates the flexible energizing signal that starts through starting judgment unit judges; After the supporting leg driver element receives that this flexibility starts energizing signal; The rotating speed that just can control drive sprocket increases to the second higher rotating speed by the first lower rotating speed; Thereby the kinematic velocity of control supporting leg to high variation, has reduced the impact that hydraulic efficiency pressure system receives by low.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 has schematically shown the scheme drawing of supporting leg of the prior art and drive part thereof;
Fig. 2 has schematically shown the hydraulic schematic diagram of motor control of the prior art;
Fig. 3 has schematically shown the structural representation of the utility model;
Fig. 4 has schematically shown the scheme of installation of sprocket rotation detecting unit; And
Fig. 5 has schematically shown the variation scheme drawing of supporting leg speed.
The specific embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As the first aspect of the utility model, a kind of flexible starter of supporting leg of construction machinery and equipment is provided.Like Fig. 3-shown in Figure 5, this project machinery comprises drive sprocket 110, driven sprocket 120 and chain 130, and chain 130 is on drive sprocket 110 and driven sprocket 120, and supporting leg 100 is connected with chain 130.Flexible starter comprises: sprocket rotation detecting unit 300 and control part (not shown).Wherein, sprocket rotation detecting unit 300 relatively is provided with the gear teeth portion of drive sprocket 110 or driven sprocket 120, produces the gear teeth turn signal of the rotation situation that is used to indicate corresponding drive sprocket 110 or driven sprocket 120.That is to say that sprocket rotation detecting unit 300 both can be installed in and the corresponding position of drive sprocket, also can be installed in and the corresponding position of driven sprocket.When sprocket rotation detecting unit 300 was installed in the corresponding position of drive sprocket, the gear teeth turn signal that sprocket rotation detecting unit 300 produces was used to indicate the rotation situation of drive sprocket; When sprocket rotation detecting unit 300 was installed in the corresponding position of driven sprocket, the gear teeth turn signal that sprocket rotation detecting unit 300 produces was used to indicate the rotation situation of driven sprocket.Control part is electrically connected with sprocket rotation detecting unit 300, and control part comprises: start judging unit and supporting leg driver element.Start judging unit and receive this gear teeth turn signal, be used for confirming the startup of corresponding drive sprocket 110 or driven sprocket 120 and producing the flexible energizing signal that starts according to the variation of this gear teeth turn signal.The supporting leg driver element receives the flexible energizing signal that starts, and is increased with linear or nonlinear mode to second speed V2 by the first speed V1 according to the rotating speed of flexibility startup energizing signal control drive sprocket.Preferably, sprocket rotation detecting unit 300 is near switch.As shown in Figure 4, flexible starter also comprises erecting frame 400, and sprocket rotation detecting unit 300 is installed on the erecting frame 400.
Please combine Fig. 3, when supporting leg remained static, drive sprocket 110 remained static, and at this moment, sprocket rotation detecting unit 300 does not produce gear teeth turn signal.In one case; When sprocket rotation detecting unit 300 is between two gear teeth; When the user begins to operate to supporting leg; Drive sprocket 110 rotates, and when gear teeth of drive sprocket 110 turned over sprocket rotation detecting unit 300, sprocket rotation detecting unit 300 generated a gear teeth turn signal.This gear teeth turn signal is delivered to the startup judging unit of control part, because the variation of growing out of nothing has taken place gear teeth turn signal, therefore starts judging unit and just can judge drive sprocket rotation has taken place.Under another kind of situation, when sprocket rotation detecting unit 300 was positioned at the corresponding position of the gear teeth, the variation from having to do not having took place in gear teeth turn signal, and in like manner, the startup judging unit also can be judged drive sprocket rotation has taken place.So; Start judging unit and generate the flexible energizing signal that starts; After the supporting leg driver element received that this flexibility starts energizing signal, the rotating speed that just can control drive sprocket 110 increased to the second higher rotating speed by the first lower rotating speed, thereby the kinematic velocity of control supporting leg is by hanging down to high variation.Therefore be changed to by quiescence in the process of state of kinematic motion, the sudden change of speed is less, has reduced the impact that hydraulic efficiency pressure system receives, has prolonged life-span of motor, can also alleviate or avoid simultaneously the loosening and problem that comes off of chain.
Preferably, construction machinery and equipment also comprise motor and with motor bonded assembly electric proportional valve, motor and drive sprocket 110 drives and is connected.The supporting leg driver element is through the rotating speed of the drive current control drive sprocket of control electric proportional valve.Through the drive current of control electric proportional valve, can control the rotating speed of motor, i.e. the rotating speed of may command drive sprocket.
As the second aspect of the utility model, a kind of construction machinery and equipment is provided, comprise supporting leg and the flexible starter that is used to control supporting leg, this flexible starter is the flexible starter among above-mentioned each embodiment.Preferably, this project machinery is the mechanical equipment that concrete pumping equipment or hoisting crane etc. have supporting leg.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. the flexible starter of the supporting leg of a construction machinery and equipment; Said construction machinery and equipment comprises drive sprocket (110), driven sprocket (120) and chain (130); Said chain (130) is on said drive sprocket (110) and said driven sprocket (120), and said supporting leg (100) is connected with said chain (130);
It is characterized in that said flexible starter comprises:
Sprocket rotation detecting unit (300) relatively is provided with the gear teeth portion of said drive sprocket (110) or said driven sprocket (120), produces the gear teeth turn signal of the rotation situation that is used to indicate corresponding said drive sprocket (110) or said driven sprocket (120);
Control part is electrically connected with said sprocket rotation detecting unit (300), comprising:
Start judging unit, receive said gear teeth turn signal, confirm the startup of corresponding said drive sprocket (110) or said driven sprocket (120) and produce the flexible energizing signal that starts according to the variation of said gear teeth turn signal;
The supporting leg driver element receives the said flexible energizing signal that starts, and the rotating speed of controlling said drive sprocket (110) according to said flexible startup energizing signal is increased with linear or nonlinear mode to second speed (V2) by first speed (V1).
2. flexible starter according to claim 1 is characterized in that, said sprocket rotation detecting unit (300) is near switch.
3. flexible starter according to claim 1 and 2 is characterized in that, said flexible starter also comprises erecting frame (400), and said sprocket rotation detecting unit (300) is installed on the said erecting frame (400).
4. flexible starter according to claim 1 and 2 is characterized in that, said construction machinery and equipment also comprise motor and with said motor bonded assembly electric proportional valve, said motor and said drive sprocket (110) drive and are connected; Said supporting leg driver element is controlled the rotating speed of said drive sprocket through the drive current of controlling said electric proportional valve.
5. a construction machinery and equipment comprises supporting leg and the flexible starter that is used to control said supporting leg, it is characterized in that said flexible starter is each described flexible starter among the claim 1-4.
6. construction machinery and equipment according to claim 5 is characterized in that, said construction machinery and equipment is concrete pumping equipment or hoisting crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205486893U CN202368548U (en) | 2011-12-23 | 2011-12-23 | Engineering machinery and flexible starting device of supporting leg thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205486893U CN202368548U (en) | 2011-12-23 | 2011-12-23 | Engineering machinery and flexible starting device of supporting leg thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202368548U true CN202368548U (en) | 2012-08-08 |
Family
ID=46592264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205486893U Expired - Lifetime CN202368548U (en) | 2011-12-23 | 2011-12-23 | Engineering machinery and flexible starting device of supporting leg thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202368548U (en) |
-
2011
- 2011-12-23 CN CN2011205486893U patent/CN202368548U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |