CN202379606U - Pilot pressure and engine rotational speed linkage for railway cranes - Google Patents
Pilot pressure and engine rotational speed linkage for railway cranes Download PDFInfo
- Publication number
- CN202379606U CN202379606U CN2011204036019U CN201120403601U CN202379606U CN 202379606 U CN202379606 U CN 202379606U CN 2011204036019 U CN2011204036019 U CN 2011204036019U CN 201120403601 U CN201120403601 U CN 201120403601U CN 202379606 U CN202379606 U CN 202379606U
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- CN
- China
- Prior art keywords
- oil pump
- pilot pressure
- rotational speed
- speed linkage
- rare earth
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- Expired - Lifetime
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Abstract
The utility model discloses a pilot pressure and engine rotational speed linkage for railway cranes, which comprises an oil pump-connecting disk, an oil pump-connecting housing and a console, wherein the oil pump-connecting disk is fixedly connected with a crankshaft through bolts, and the oil pump-connecting housing is fixedly connected with an oil pump. The pilot pressure and engine rotational speed linkage is characterized in that a high-strength rare earth steel magnet is additionally arranged on the oil pump-connecting disk, the high-strength rare earth steel magnet and a Hall detection switch at a corresponding position on the oil pump-connecting housing are formed into a Hall sensor, the Hall detection switch is connected with a sensor wire, the other end of the sensor wire is connected to an electronic tachometer arranged on the console, and an output relay is arranged in the electronic tachometer, and has a corresponding operating value. The pilot pressure and engine rotational speed linkage has the advantage that according to the condition of the rotational speed of an engine, the pilot pressure and engine rotational speed linkage can automatically establish or remove the pilot control pressure of the hydraulic system of a railway crane, thus effectively avoiding the artificial intervention of the control pressure of the system and eliminating the potential safety hazards of the misoperation of the crane during the operation of the engine at idle speed.
Description
Technical field
The utility model relates to a kind of linkage, particularly a kind of locomotive crane pilot pressure and engine speed linkage.
Background technology
The hydraulic control system of locomotive crane adopts hand switch control to build pressure; When switch was in closure state, no matter driving engine is to be under which kind of rotating speed state, all there was control presssure in hydraulic control system; If in time do not close this switch; Be prone to cause driving engine hoisting crane maloperation when tickover, potential safety hazard occurs, cause safety failure.
Summary of the invention
The purpose of the utility model is: to the problems referred to above, a kind of locomotive crane pilot pressure and engine speed linkage are provided.Driving engine is when working speed, and guide's control presssure is set up automatically; Driving engine is when idling work, and guide's control presssure is cancelled automatically.
The purpose of the utility model realizes through following technical proposals: a kind of locomotive crane pilot pressure and engine speed linkage; Comprise that oil pump terminal pad, oil pump connect housing, pickup wire and operating console; Wherein the oil pump terminal pad is captiveed joint with bent axle through bolt; Oil pump connects housing captives joint with oil pump, it is characterized in that: install high-strength rare earth magnetic steel additional on the said oil pump terminal pad, the Hall detector switch that is connected correspondence position on the housing with oil pump constitutes Hall element; The Hall detector switch links to each other with pickup wire; The pickup wire other end is connected to the electronic tachometer that is provided with on the operating console, is provided with output relay in the electronic tachometer, and output relay is provided with the corresponding action value.
As optimal way, said high-strength rare earth magnetic steel is embedded on the oil pump terminal pad through the sensor magnetic steel sleeve.
As optimal way, said high-strength rare earth magnetic steel and Hall detector switch spacing are 7～12mm.
The workflow of the utility model: Hall element detects oil pump terminal pad rotating speed, is engine speed, and Hall element is exported to electronic tachometer with detected tach signal through pickup wire.Be provided with output relay in the electronic tachometer, output relay is provided with the corresponding action value, when signal input value below the cooresponding rotating speed of this operating value; When being idle state; Electronic tachometer output high level drives electromagnetic relief valve and gets electric off-load, and guide's control presssure is cancelled; When signal input value the cooresponding rotating speed of this operating value or more than, promptly during the working speed state, electronic tachometer output low level signal makes electromagnetic relief valve be operated in the pressure regulation overflow situation, guide's control presssure is set up.Like this; Electronic tachometer can be according to the rotation speed change situation of driving engine; Automatically judge whether to set up guide's control presssure, through the plain existing manipulation to guide's control presssure of output respective electrical, wherein the output relay operating value can the corresponding setting according to the driving engine of different model.
The beneficial effect of the utility model: adopt Hall element to detect rotating speed, it is big to detect distance, and its reliable Detection of test results proof can reach 15mm apart from maximum; Interior band detection signal Si Mite trigger circuit, signal output waveform is good, and the peripheral circuit of secondary instrument is simplified.The output relay that is provided with in the electronic tachometer has realized setting up automatically or cancelling according to the engine speed situation function of guide's control presssure; This device is through the actual proof of using; Can effectively avoid human intervention system control presssure, the potential safety hazard of the maloperation of hoisting crane when having eliminated engine idling operation simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the partial enlarged drawing of A among Fig. 1.
Mark among the figure, 1 is the oil pump terminal pad, and 2 is the sensor magnetic steel sleeve, and 3 is bent axle, and 4 is bolt, and 5 is the sensor magnetic steel sleeve, and 6 is high-strength rare earth magnetic steel, and 7 is the Hall detector switch, and 8 is oil pump, and 9 is pickup wire, and 10 is electronic tachometer, 11 is operating console.
Specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
Embodiment: like Fig. 1, shown in Figure 2; A kind of locomotive crane pilot pressure and engine speed linkage; Comprise that oil pump terminal pad 1, oil pump connect housing 2 and operating console 11, wherein oil pump terminal pad 1 is captiveed joint with bent axle 3 through bolt 4, and oil pump connects housing 2 and captives joint with oil pump 8; It is characterized in that: install high-strength rare earth magnetic steel 6 on the said oil pump terminal pad 1 additional; The Hall detector switch 7 that is connected correspondence position on the housing 2 with oil pump constitutes Hall element, and Hall detector switch 7 links to each other with pickup wire 9, and pickup wire 9 other ends are connected to the electronic tachometer 10 that is provided with on the operating console 11; Be provided with output relay in the electronic tachometer 10, the output relay operating value is made as 800.
Hall element detects oil pump terminal pad rotating speed, is engine speed, and Hall element is exported to electronic tachometer 10 with detected tach signal through pickup wire.Be provided with output relay in the electronic tachometer 10, the output relay operating value is made as 800, when signal input value below 800 rev/mins; When being idle state; Electronic tachometer 10 output high level drive electromagnetic relief valve and get electric off-load, and guide's control presssure is cancelled; When signal input value 800 rev/mins or more than, promptly during the working speed state, electronic tachometer 10 output low level signals make electromagnetic relief valve be operated in the pressure regulation overflow situation, guide's control presssure is set up.
Said high-strength rare earth magnetic steel 6 is embedded on the oil pump terminal pad 1 through sensor magnetic steel sleeve 5; Said high-strength rare earth magnetic steel 6 is 7～12mm with Hall detector switch 7 spacings, according to this spacing of detection effect adjustment of real work medium speed signal.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. locomotive crane pilot pressure and engine speed linkage; Comprise that oil pump terminal pad (1), oil pump connect housing (2), pickup wire (9) and operating console (11); Wherein oil pump terminal pad (1) is captiveed joint with bent axle (3) through bolt (4); Oil pump connects housing (2) captives joint with oil pump (8), it is characterized in that: install high-strength rare earth magnetic steel (6) on the said oil pump terminal pad (1) additional, be connected Hall detector switch (7) the formation Hall element that housing (2) is gone up correspondence position with oil pump; Hall detector switch (7) links to each other with pickup wire (9); Pickup wire (9) other end is connected to operating console (11) and goes up the electronic tachometer (10) that is provided with, and electronic tachometer is provided with output relay in (10), and output relay is provided with the corresponding action value.
2. locomotive crane pilot pressure as claimed in claim 1 and engine speed linkage is characterized in that: said high-strength rare earth magnetic steel (6) is embedded on the oil pump terminal pad (1) through sensor magnetic steel sleeve (5).
3. locomotive crane pilot pressure as claimed in claim 2 and engine speed linkage is characterized in that: said high-strength rare earth magnetic steel (6) is 7～12mm with Hall detector switch (7) spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204036019U CN202379606U (en) | 2011-10-21 | 2011-10-21 | Pilot pressure and engine rotational speed linkage for railway cranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204036019U CN202379606U (en) | 2011-10-21 | 2011-10-21 | Pilot pressure and engine rotational speed linkage for railway cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202379606U true CN202379606U (en) | 2012-08-15 |
Family
ID=46628124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204036019U Expired - Lifetime CN202379606U (en) | 2011-10-21 | 2011-10-21 | Pilot pressure and engine rotational speed linkage for railway cranes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202379606U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253771A (en) * | 2015-11-25 | 2016-01-20 | 南车成都机车车辆有限公司 | Returning and gear-disengaging safety system of railway crane |
| CN109062162A (en) * | 2018-08-24 | 2018-12-21 | 中车齐齐哈尔车辆有限公司 | The control method and system of vehicle |
-
2011
- 2011-10-21 CN CN2011204036019U patent/CN202379606U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253771A (en) * | 2015-11-25 | 2016-01-20 | 南车成都机车车辆有限公司 | Returning and gear-disengaging safety system of railway crane |
| CN105253771B (en) * | 2015-11-25 | 2017-06-06 | 中车成都机车车辆有限公司 | A kind of de- tooth insurance system of locomotive crane loopback |
| CN109062162A (en) * | 2018-08-24 | 2018-12-21 | 中车齐齐哈尔车辆有限公司 | The control method and system of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Chengdu second bridge two North Road 610051 Sichuan province No. 31 Patentee after: CRRC CHENGDU CO., LTD. Address before: Chengdu second bridge two North Road 610051 Sichuan province No. 31 Patentee before: CSR Chengdu Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |