CN202448078U - Internal combustion hydraulic bolt spanner for railway - Google Patents
Internal combustion hydraulic bolt spanner for railway Download PDFInfo
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- CN202448078U CN202448078U CN201220054437XU CN201220054437U CN202448078U CN 202448078 U CN202448078 U CN 202448078U CN 201220054437X U CN201220054437X U CN 201220054437XU CN 201220054437 U CN201220054437 U CN 201220054437U CN 202448078 U CN202448078 U CN 202448078U
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- oil
- internal combustion
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- hydraulic
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Abstract
The utility model discloses an internal combustion hydraulic bolt spanner for a railway. The internal combustion hydraulic bolt spanner comprises an oil pump, a reversing valve, an overflow valve, a pilot unloading valve and an executing mechanism, wherein the oil pump connected with an output shaft of an internal combustion engine is a dual oil pump which consists of a high-flow small-pressure oil pump and a small-flow high-pressure oil pump; the executing mechanism is formed in a way that a hydraulic motor is connected with a reduction gearbox and then is connected with a working sleeve; the reversing valve is a three-position four-way reversing valve which is connected with a convergent output oil path of the dual oil pump, an oil return oil path and two oil ports of the hydraulic motor of the executing mechanism respectively; and the pilot unloading valve is configured between the output oil path of the high-flow small-pressure oil pump and the oil return path. According to the hydraulic bolt spanner, the working requirements of different torques can be met with small power; the configuration, the control and the use of the entire machine are simpler; the weight is light; the use and the handling are more convenient; and the hydraulic bolt spanner is suitable for outdoor movable operation.
Description
Technical field
The utility model relates to the miniature movable type internal combustion hydraulic track wrench that a kind of railway operation is used.
Background technology
Use track wrench to be internal combustion engine drives on the railway at present, single oil pump feed drives hydraulic motor, and adapted reversal valve, overflow valve carry out escapo valve moment of torsion, switching-over work.Adopt the advantage of the hydraulic bolt spanner of this hydraulic principle to be: machine system is simple relatively; Its shortcoming is: needing to adopt the single oil pump of powerful explosive motor and high-power big flow, by the hydraulic bolt spanner that this principle forms, is low load with strong power at torque range less but commonly used; Cause waste bigger in power and configuration thereof and the use; Spanner weight is heavier, uses and carry equal inconvenience, particularly field work.
Other has a kind of hydraulic bolt spanner; It is the fixed spanner that is not suitable for open-air mobile operating; Basic comprising is: adopt can forward and reverse rotation motor be used as power, hydraulic system has adopted the only unidirectional oil pump of unidirectional rotation and the two-way oil pump (change the oily direction of turnover through changing direction of rotation, realize function corresponding) of a two-way rotation of ability; Adapted hydraulic control one-way valve, overflow valve, piloted unload valve; Pressure detector (be used for detected pressures and send signal of telecommunication control), executing agency adopts oil cylinder piston bar (band tooth on it) the positive and negative rotation of the ut socket that pushes the work forward, and realizes tightening or unscrewing the function of nut.This hydraulic bolt spanner fundamental mode is:
1, the effect of fastening nut: actuating motor is just changeing and is driving a two-way oil pump and a unidirectional oil pump just changes, and at loading moment hour, two oil pumps are simultaneously to the oil cylinder fuel feeding; Promote fast piston rod and move, thus the work of drive sleeve fast rotational nutting, when load increases to certain value when moment of torsion (nut screwing clamping to certain); Piloted unload valve is carried out the off-load effect, big two-way oil pump off-load, and the oil of this pump no longer gets into oil cylinder; But direct oil sump tank, only unidirectional oil pump is to the oil cylinder fuel feeding, and the piston rod translational speed slows down; Because of two-way oil pump is in zero load, thus most of power of motor be added on the unidirectional oil pump, thereby oil pressure is further improved; To increase piston rod thrust, increase the moment of torsion of fastening nut, satisfied the requirement of big screw-down torque; Up to reaching setting, at this moment no longer tighten work, motor is shut down.But at this moment piston rod must oppositely be return original initial operating position, and to prepare the work of tightening next time, at this moment motor must restart; Change counter-rotating into by former just the commentaries on classics, drive oil pump and carry out reverse rotation, change the oil inlet and outlet direction; The former oil-out of oil cylinder changes oil-in into like this; The oil-in of former oil cylinder changes oil-out into, makes piston rod oppositely move back to the initialization position, shuts down again after putting in place.In this course of work, unidirectional oil pump is not participated in work,
Operating efficiency reduces.
2, oppositely unscrew nut work: at first motor start-up counter-rotating, only the two-way oil pump fuel feeding is given oil cylinder, promotes piston rod and oppositely moves, and unidirectional oil pump is not participated in work, thereby it is lower oppositely to unscrew operating efficiency, Song Wanhou, motor is shut down.Motor starts again just changeing and makes the piston rod forward move to the initialization position then, shuts down again, prepares loose next time nut.
The spanner characteristics of this hydraulic work system principle are:
1, can only adopt the motor of ability rotating, but. one of them oil pump can only adopt the two-way oil pump of rotating, and the startup of motor, rotating and shutdown conversion are frequent, thereby the configuration of this machine and control use complicacy, is not suitable for open-air mobile operation.
2, no matter be loose nut or fastening nut; All must there be a motor to restart, change not work done of the idle stroke motion (getting back to the initialization position) of direction of rotation, and unidirectional oil pump do not participated in work when loose nut; Only two-way pump work, thereby this machine overall efficiency is low.
3, executing agency has adopted the oil cylinder piston type of drive, and piston rod length is unavoidably limited, under the situation of the big stroke of rotation, can't use like this.
The utility model content
The purpose of the utility model is to having the deficiency that the hydraulic bolt spanner exists technically now a kind of internal combustion hydraulic track wrench that carries out work with less power and different hydraulic principles to be provided.
The technical scheme of the utility model is following:
A kind of railway is used the internal combustion hydraulic track wrench, is used as power with internal combustion engine, includes oil pump, reversal valve, overflow valve, guide's unloader and executing agency.Its oil pump that is connected with internal combustion engine output shaft adopts double-united oil pump, is made up of a little pressure oil pump of big flow and a low discharge high pressure oil pump; Executing agency adopts a hydraulic motor to connect reduction box; Connect the work sleeve again: what reversal valve adopted is a three position four-way directional control valve; Two hydraulic fluid ports that connect the hydraulic motor that converges output circuit, oil return circuit and executing agency of double-united oil pump respectively; One is the oil-in that motor is rotated in the forward, and one is the oil-in of motor reverse rotation; Guide's unloader is configured between the output circuit and oil return line of the little pressure oil pump of big flow.In addition, between the output circuit of double-united oil pump and oil return circuit, be provided with safety valve, three position four-way directional control valve is provided with overflow valve and Pressure gauge with the oil circuit that is connected of the oil-in of the motor reverse rotation of hydraulic motor.
The advantage of this hydraulic bolt spanner is following:
1, adopt the explosive motor of smaller power to be used as power; No matter drive two oil pumps, be fastening nut or loose nut, all the time towards a direction rotation; Do not need the frequent starting engine; And continuous operation always can change the direction of rotation of work sleeve at any time easily through reversal valve, and operating mode is switched.Because of being the motor driven in rotation, can satisfy the big stroke requirement of rotation.Complete machine configuration and control are used simpler, and weight is lighter, use and move more convenient, are applicable to open-air mobile operation.
2, spanner is in the most frequently used medium and small moment of torsion scope of application, and power is given full play to, and does not have waste.Though can satisfy simultaneously access times again less but moment of torsion is wanted big job requirement.
3, on operating rate, divide two-stage, in the most frequently used moment of torsion scope of application, adopt high rotating speed, guaranteed high operating efficiency.Adopt low speed in the high pulling torque scope that is of little use, to guarantee to reach high pulling torque.And load torque changes high rotary speed working again over to automatically in case reduction gets in the most frequently used torque range, no matter is that fastening nut or loose nut have all guaranteed higher operating efficiency at once.
Description of drawings
Fig. 1 is the structure principle chart for the utility model.
The specific embodiment
Elaborate below in conjunction with the structural principle and the working method of accompanying drawing to the utility model:
Referring to Fig. 1, this hydraulic spanner is to be used as power with internal combustion engine 1, adopts by a little pressure oil pump 2 of big flow and the double-united oil pump that low discharge high pressure oil pump 4 is formed; 6, one safety valves 5 of 12, one three position four-way directional control valves of guide's unloader of adapted; An overflow valve 11; Pressure gauges 10 etc., executing agency adopts a hydraulic motor 9, drives work sleeve 7 by reduction box 8 (gear reduction) and carries out work.
Concrete annexation: the output shaft of internal combustion engine 1 connects double-united oil pump; Two hydraulic fluid ports of the hydraulic motor that converges output circuit, oil return circuit and executing agency of double-united oil pump are connected with three position four-way directional control valve respectively; Guide's unloader 12 is configured between the output circuit and oil return line of the little pressure oil pump 2 of big flow; Safety valve 5 is arranged on and is provided with converging between output circuit and the oil return line of double-united oil pump, and overflow valve 11 and Pressure gauge 10 are arranged on being connected on the oil circuit of oil-in II of three position four-way directional control valve 6 and the motor reverse rotation of hydraulic motor.3 is fluid filters among the figure.
Working method:
Behind the starting apparatus combustion engine 1, internal combustion engine l drives double-united oil pump all the time towards a direction rotation, carries out oil suction and fuel feeding work.
1, fastening nut work:
When three position four-way directional control valve 6 was in meta, the output oil of two oil pumps was because of get into two hydraulic fluid ports of rear portion hydraulic motor simultaneously, made motor be in quick condition and do not rotate, and hydraulic oil directly gets into oil return line.
Tighten play button and make reversal valve place a when position left side when pressing; Then the output oil of oil pump is advanced by the Y mouth of three position four-way directional control valve 6, and the A mouth goes out, and gets into hydraulic motor 9 from motor reverse rotation oil-in II; Promoting hydraulic motor 9 is rotated counterclockwise; Oil is rotated in the forward hydraulic fluid port I from motor and flows out oil return, and oil return is advanced from the B mouth of three position four-way directional control valve 6, and the O mouth goes out.8 rotations of hydraulic motor 9 driven gear decelerators drive work sleeve 7 then and are rotated in the forward, and carry out fastening nut work; Nut is stubborn more tight more, causes operating oil pressure P progressively to increase, when operating oil pressure P is lower than the pressure unloading value P2 of piloted unload valve 12 setting; The oil of double-united oil pump output all gets into hydraulic motors 9, and work sleeve 7 rotates fastening nut at a high speed, when load causes P>during P2; Piloted unload valve 12 off-loads make the little pressure oil pump 2 output oil of big flow pass through piloted unload valves 12 and directly oil return, no longer get into hydraulic motor 9; Thereby only low discharge high pressure oil pump 4 output oil get into hydraulic motor 9, cause rotating speed to reduce.Because the big little pressure oil pump 2 of flow is under the Light Condition, most of power of internal combustion engine l is added on the low discharge high pressure oil pump 4, guarantees that enough power can further improve low discharge high pressure oil pump 4 oil pressure; The screw-down torque of increase work sleeve 7, when reaching setting, overflow valve 11 is opened; Oil is from the overflow valve oil return; Hydraulic motor 9 stops operating (setting Pl can adjust as required), unclamps and tightens play button, and the oil of double-united oil pump is directly from three position four-way directional control valve 6 oil sump tanks; Three position four-way directional control valve 6 operating position that mediates is to prepare to back out a nut.
2 loose nut work:
Press the play button of lower nut, three position four-way directional control valve 6 places right working position, and the output oil of double-united oil pump gets into from the Y mouth of three position four-way directional control valve 6; The B mouth flows out; The motor that gets into hydraulic motor again is rotated in the forward hydraulic fluid port I, promotes hydraulic motor 9 and turns clockwise, 8 rotations of driven gear decelerator; Then drive 7 reverse rotations of work sleeve, loose nut.
Oil flows out from motor reverse rotation hydraulic fluid port II, and from the A mouth entering of three position four-way directional control valve 6, the O mouth flows out oil return.
< during P2, then the output of double-united oil pump oil all gets into hydraulic motor 9, promotes the 7 high speed rotations of motor drive work sleeve and carries out loose nut when the nut that is in tight state unscrews required .P.
As the required P of loose nut>during P2, little pressure oil pump 2 automatic deloadings of then big flow, the power of internal combustion engine 1 basically all is added on the low discharge high pressure oil pump 4; Oil pressure P is raise form high pulling torque to unscrew nut, after in a single day nut unscrewed, P reduced at once; P < P2; The output oil of the little pressure oil pump 2 of at this moment big flow gets into hydraulic motor 9 again again, and drawing motor eases out nut at a high speed, has guaranteed high operating efficiency.
Claims (1)
1. a railway is used the internal combustion hydraulic track wrench; Be used as power with internal combustion engine; Include oil pump, reversal valve, overflow valve, guide's unloader and executing agency; It is characterized in that: the oil pump that is connected with internal combustion engine output shaft adopts double-united oil pump, is made up of a little pressure oil pump of big flow and a low discharge high pressure oil pump; Executing agency adopts hydraulic motor to connect reduction box, connects the work sleeve again; Reversal valve adopts three position four-way directional control valve, connects two hydraulic fluid ports of the hydraulic motor that converges output circuit, oil return circuit and executing agency of double-united oil pump respectively; Guide's unloader is configured between the output circuit and oil return line of the little pressure oil pump of big flow; Between the output circuit of double-united oil pump and oil return circuit, be provided with safety valve, three position four-way directional control valve is provided with overflow valve and Pressure gauge with the oil circuit that is connected of the reverse rotation oil-in of hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220054437XU CN202448078U (en) | 2012-02-20 | 2012-02-20 | Internal combustion hydraulic bolt spanner for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220054437XU CN202448078U (en) | 2012-02-20 | 2012-02-20 | Internal combustion hydraulic bolt spanner for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202448078U true CN202448078U (en) | 2012-09-26 |
Family
ID=46863971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220054437XU Expired - Fee Related CN202448078U (en) | 2012-02-20 | 2012-02-20 | Internal combustion hydraulic bolt spanner for railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202448078U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816151A (en) * | 2015-03-04 | 2015-08-05 | 常州大学 | Hydraulic automatic nut screwing-unscrewing device |
| CN106194865A (en) * | 2016-08-31 | 2016-12-07 | 国汇机械制造泰州有限公司 | Paratrooper brake system |
| CN106425969A (en) * | 2016-12-26 | 2017-02-22 | 重庆鼎誉机电有限公司 | Hydraulic wrench |
| CN110206794A (en) * | 2019-06-24 | 2019-09-06 | 三一汽车起重机械有限公司 | Hydraulic spanner and engineering truck |
| CN111810464A (en) * | 2020-05-22 | 2020-10-23 | 武汉船用机械有限责任公司 | Bolt tightening device |
| CN114179768A (en) * | 2021-12-31 | 2022-03-15 | 富奥汽车零部件股份有限公司 | Unloading system and pump type retarder |
-
2012
- 2012-02-20 CN CN201220054437XU patent/CN202448078U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816151A (en) * | 2015-03-04 | 2015-08-05 | 常州大学 | Hydraulic automatic nut screwing-unscrewing device |
| CN106194865A (en) * | 2016-08-31 | 2016-12-07 | 国汇机械制造泰州有限公司 | Paratrooper brake system |
| CN106425969A (en) * | 2016-12-26 | 2017-02-22 | 重庆鼎誉机电有限公司 | Hydraulic wrench |
| CN110206794A (en) * | 2019-06-24 | 2019-09-06 | 三一汽车起重机械有限公司 | Hydraulic spanner and engineering truck |
| CN110206794B (en) * | 2019-06-24 | 2020-04-14 | 三一汽车起重机械有限公司 | Hydraulic wrench and engineering vehicle |
| CN111810464A (en) * | 2020-05-22 | 2020-10-23 | 武汉船用机械有限责任公司 | Bolt tightening device |
| CN114179768A (en) * | 2021-12-31 | 2022-03-15 | 富奥汽车零部件股份有限公司 | Unloading system and pump type retarder |
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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: 20120926 Termination date: 20190220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |