CN102303235A - Press fit testing device for buffer valve - Google Patents
Press fit testing device for buffer valve Download PDFInfo
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- CN102303235A CN102303235A CN201110158658A CN201110158658A CN102303235A CN 102303235 A CN102303235 A CN 102303235A CN 201110158658 A CN201110158658 A CN 201110158658A CN 201110158658 A CN201110158658 A CN 201110158658A CN 102303235 A CN102303235 A CN 102303235A
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Abstract
The invention relates to a press fit testing device for a buffer valve. The press fit testing device comprises an upper bearing plate, a lower bearing plate, a vertical plate, a hydraulic cylinder, a pressure head, a base, a three-way valve, a high-pressure oil pump, a sensor and a hydraulic station, wherein the top end of the hydraulic cylinder is provided with a first concave hole, and the lower end of the hydraulic cylinder is provided with a second concave hole; the pressure head is arranged at the bottom end of a piston rod; the side end of the pressure head is provided with a third concave hole, and the lower end of the pressure head is provided with a through hole; the base is arranged on the top surface of the lower bearing plate; the upper end of the base is provided with a first sinking groove, and the lower end of the base is provided with a fourth concave hole; the three-way valve is connected with the third concave hole of the pressure head, the output end of the high-pressure oil pump and the input end of the sensor respectively; an oil tank of the high-pressure oil pump is connected with the fourth concave hole of the base through an oil pipe; the output end of the sensor is connected with a control system of the hydraulic station through a data line; and the output end of the hydraulic station is connected with the first concave hole and the second concave hole of the hydraulic cylinder through high-pressure oil pipes respectively. By the press fit testing device, an accurate press fit valve can be provided for the press fit of the buffer valve, so that the opening pressure of a product meets technical requirements.
Description
Technical field
The invention belongs to a kind of experimental rig that is used for trimmer valve, specifically, relate to a kind of experimental rig that is press-fitted that is used for trimmer valve.
Background technology
Trimmer valve is a part in the isobaric fuel-displaced even part; Constant pressure delivery valve is assemblied in the fuel injection system of diesel engine; After diesel engine is started working; Above trimmer valve, form high pressure chest; Fuel oil in the high pressure chest leads to injector assembly through high-pressure oil pipe; After the injector assembly fuel injected; Also have residual pressure in the high pressure chest; In multicylinder pump, the residual pressure in each high pressure chest is different, through adopting trimmer valve; And stipulate certain opening pressure; Make the throttle orifice of residual pressure too high in the high pressure chest through trimmer valve carry out overflow, guaranteed that the residual pressure of each cylinder high pressure chest is identical, thereby improve the service behaviour of diesel engine.
Can not extract after trimmer valve is pressed into, therefore when opening pressure surpasses setting, will do to scrap processing, conventional method is to be pressed into trimmer valve earlier; Detect again,, then be press-fitted again, if opening pressure surpasses if opening pressure is not enough; Then product rejection, so efficient is low, and scrappage is high.
After adopting trimmer valve to be press-fitted experimental rig, be press-fitted with the opening pressure detection and carry out simultaneously, when opening pressure reaches the regulation requirement, be press-fitted and stop automatically.Therefore, high efficiency, scrappage is low.
Summary of the invention
Technical problem to be solved by this invention is, a kind of experimental rig that is press-fitted that is used for trimmer valve is provided, and for being press-fitted of trimmer valve provides the value of being press-fitted accurately, makes the opening pressure of product meet specification requirement.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of experimental rig that is press-fitted that is used for trimmer valve is characterized in that, comprises upper bearing plate, lower support plate, column, hydraulic cylinder, pressure head, base, triple valve, high-pressure oil pump, sensor, Hydraulic Station; Wherein,
A) this upper bearing plate is fixedly connected through column with lower supporting plate, and upper backup pad and lower supporting plate are parallel to each other, and both respectively have a through hole;
B) this hydraulic cylinder is fixedly connected on the end face of upper bearing plate, and the top of hydraulic cylinder is provided with first shrinkage pool, and it is inside and outside that this first shrinkage pool is communicated with hydraulic cylinder; The lower end of hydraulic cylinder is provided with second shrinkage pool, and it is inside and outside that this second shrinkage pool is communicated with hydraulic cylinder; Piston rod in the hydraulic cylinder is passed down through the through hole of upper backup pad, and the bottom of this piston rod is provided with a pressure head; The bottom surface of this pressure head is the plane, and its side is provided with the 3rd shrinkage pool, and its lower end is provided with a through hole, and the 3rd shrinkage pool and through hole are communicated with;
C) end face of this lower supporting plate is provided with a base, and the upper end of this base is provided with first deep gouge, and the lower end is provided with the 4th shrinkage pool, and the 4th shrinkage pool is communicated with the through hole on first deep gouge and the lower support plate;
D) the 3rd shrinkage pool of first port of this triple valve and pressure head is connected through high-pressure oil pipe, and its second port is connected through high-pressure oil pipe with the hydraulic oil delivery side of pump, and the input of its 3rd port and sensor is connected through high-pressure oil pipe; The 4th shrinkage pool of the fuel tank of high-pressure oil pump and base is connected through oil pipe, and the sensor output is connected through data wire with control system on the Hydraulic Station; The output of Hydraulic Station has two, is connected through high-pressure oil pipe with second shrinkage pool with first shrinkage pool of hydraulic cylinder respectively.
The periphery of first deep gouge of described base is provided with lining, and the bottom surface of first deep gouge is provided with packing ring.
Compared with prior art, adopt technical scheme of the present invention, can the value of being press-fitted accurately be provided, make the opening pressure of product meet specification requirement for being press-fitted of trimmer valve.Through upper bearing plate, lower support plate, column, hydraulic cylinder, pressure head, base, triple valve, high-pressure oil pump, sensor and Hydraulic Station are set, start high-pressure oil pump, the hydraulic oil in the high-pressure oil pump flows out from the through hole of pressure head; Then start Hydraulic Station, Hydraulic Station begins delivery hydraulic pressure oil in first shrinkage pool of hydraulic cylinder, promotes piston and moves downward.The hydraulic oil that from the through hole of pressure head, flows out is opened the sealing surface of steel ball and trimmer valve just through the throttle orifice of trimmer valve, and the 4th shrinkage pool on the base of flowing through gets into oil return pipe, flows at last in the fuel tank of high-pressure oil pump.When the opening pressure of trimmer valve reaches setting value; Sensor transforms through pressure; Signal is fed back to the control system of Hydraulic Station through data wire; Hydraulic Station stops the first shrinkage pool delivery hydraulic pressure oil to hydraulic cylinder at once; Then it is oily to the second shrinkage pool delivery hydraulic pressure of hydraulic cylinder; The promotion piston moves upward, and is press-fitted end.In addition, be provided with lining through the periphery at first deep gouge of base, the bottom surface is provided with packing ring, can avoid trimmer valve in being press-fitted process, to damage.
Description of drawings
Fig. 1 is a longitudinal sectional view of the present invention.
Fig. 2 is the longitudinal sectional view that the trimmer valve that is used for testing among the present invention is pressed into delivery valve.
Among the figure, 1; Upper bearing plate, 2; Lower support plate, 3; Column; 4; Hydraulic cylinder, 401; First shrinkage pool, 402; Second shrinkage pool, 403; Piston rod; 5; Pressure head, 501; The 3rd shrinkage pool, 502; Through hole; 6; Base, 601; First deep gouge, 602; The 4th shrinkage pool; 603; Lining, 604; Packing ring, 605; Through hole; 7; Triple valve, 701; First port, 702; Second port; 703; The 3rd port, 8; Lubricating oil pump, 9; Sensor; 10; Hydraulic Station, 11; Oil connection, 12; Trimmer valve; 1201; Last plane, 1202; Throttle orifice, 1203; Steel ball; 1204; Delivery valve, 1205; Oil outlet, 1206; Spring.
The specific embodiment
As shown in Figure 1, a kind of experimental rig that is press-fitted that is used for trimmer valve of the present invention comprises upper bearing plate 1, lower support plate 2, column 3, hydraulic cylinder 4, pressure head 5, base 6, triple valve 7, lubricating oil pump 8, sensor 9 and Hydraulic Station 10.Upper bearing plate 1 is fixedly connected through column 3 with lower supporting plate 2.Column 3 is between upper bearing plate 1 and lower supporting plate 2.Upper backup pad 1 is parallel to each other with lower supporting plate 2, and both respectively have the through hole of a longitudinal extension.Hydraulic cylinder 4 is common hydraulic cylinder structures, comprises cylinder body, upper cylinder cover, following cylinder cap, piston and piston rod, is the removable connection of sealing between piston and the cylinder body, also is the removable connection of sealing between piston rod and the following cylinder cap.Hydraulic cylinder 4 is fixedly connected on the end face of upper bearing plate 1, for example can connect through bolt.The top of hydraulic cylinder 4 is provided with first shrinkage pool 401.It is inside and outside that first shrinkage pool 401 is communicated with hydraulic cylinder 4, and wherein, hydraulic cylinder 4 inside are meant the cylinder space of piston upper end.It is inside and outside that the lower end of hydraulic cylinder 4 is provided with second shrinkage pool, 402, the second shrinkage pools, 402 connection hydraulic cylinders 4, and wherein, hydraulic cylinder 4 inside are meant the cylinder space of piston lower end.The shape of the longitudinal section of first shrinkage pool 401 of hydraulic cylinder can be for multiple, preferred ┓ shape of this patent or ┏ shape.The shape of the longitudinal section of second shrinkage pool 402 can be for multiple, preferred ┛ shape of this patent or ┗ shape.This shape helps the layout of pipeline.Piston rod 403 in the hydraulic cylinder 4 is passed down through the through hole of upper backup pad 1, and the bottom of this piston rod 403 is provided with a pressure head 5.The bottom surface of pressure head 5 is planes, and its side is provided with the 3rd shrinkage pool 501, and its lower end is provided with a through hole 502.The 3rd shrinkage pool 501 is communicated with through hole 502.The end face of lower supporting plate 2 is provided with a base 6, and the upper end of this base 6 is provided with first deep gouge 601, and the lower end is provided with the 4th shrinkage pool 602, the first deep gouges 601 and is communicated with the 4th shrinkage pool 602, and simultaneously, the 4th shrinkage pool 602 communicates with through hole on the lower support plate 2.Height and the 4th shrinkage pool 602 of considering base 6 are mainly used in the installation oil pipe, can between first deep gouge 601 and the 4th shrinkage pool 602, a through hole 605 be set, and this through hole 605 is communicated with first deep gouge 601 and the 4th shrinkage pool 602.
In whole device; The 3rd shrinkage pool 501 of first port 701 of triple valve 7 and pressure head 5 is connected through high-pressure oil pipe; Second port 702 of triple valve 7 and the output of high-pressure oil pump 8 are connected through high-pressure oil pipe, and the 3rd port 703 of triple valve 7 and the input of sensor 9 are connected through high-pressure oil pipe.The 4th shrinkage pool 602 of the fuel tank of high-pressure oil pump 8 and base 6 is connected through oil pipe.Sensor 9 outputs are connected through data wire with the control system of Hydraulic Station 10.The output of Hydraulic Station 10 has two, is connected through high-pressure oil pipe with second shrinkage pool 402 with first shrinkage pool 401 of hydraulic cylinder 4 respectively.Flow, do not leak for guaranteeing that hydraulic oil is smooth and easy in whole device, the link of high-pressure oil pipe or oil pipe can be provided with oil connection 11.In the present technique scheme, can distinguish fixed seal connection oil connection 11 in first shrinkage pool 401, second shrinkage pool 402, the 3rd shrinkage pool 501 and the 4th shrinkage pool 602.
In conjunction with Fig. 1 and Fig. 2, the course of work of this device is: at first be to place delivery valve 1204, the lower end of delivery valve 1204 put into first deep gouge 601 of base 6; Next starts high-pressure oil pump 8, and the hydraulic oil in the high-pressure oil pump 8 passes through first port 701 of second port 702, the triple valve 7 of triple valve 7, the 3rd shrinkage pool 501 of pressure head 5 successively, finally from the through hole 502 of pressure head 5, flows out; Then start Hydraulic Station 10, Hydraulic Station 10 begins delivery hydraulic pressure oil in first shrinkage pool 401 of hydraulic cylinder 4, and hydraulic oil gets in the hydraulic cylinder 4, and is positioned at the top of piston, moves downward thereby promote piston.When piston moved downward, Hydraulic Station 10 made the hydraulic oil that is in the piston below through in second shrinkage pool 402 and high-pressure oil pipe oil return to the Hydraulic Station 10 through reversal valve.Because pressure head 5 is fixed on piston rod 403 lower ends, so pressure head 5 also moves downward.When the bottom surface of pressure head 5 with after the last plane 1201 of trimmer valve 12 contacts, be press-fitted formally and begin.At this moment, the hydraulic oil that from the through hole 502 of pressure head, flows out is opened the sealing surface of steel ball 1203 and trimmer valve 12 just through the throttle orifice 1202 of trimmer valve 12, from the oil outlet 1205 of delivery valve 1204, flows out.The oil that from oil outlet 1205, flows out, the 4th shrinkage pool 602 on the base 6 of flowing through gets into oil return pipe, flows to through oil return pipe in the fuel tank of high-pressure oil pump 8.In this process, along with the continuous pressure of trimmer valve 12 falls, the operating pressure of spring 1206 is increasing, and the pipe interior hydraulic coupling that connects between the 3rd shrinkage pool 501 of first port 701 and pressure head of triple valve is increasing.When the opening pressure of trimmer valve 12 reaches setting value; Be that pipe interior hydraulic coupling between the 3rd shrinkage pool 501 of first port 701 and pressure head 5 of triple valve is when reaching setting value; Sensor 9 transforms through pressure; Signal is fed back to the control system of Hydraulic Station 10 through data wire; Hydraulic Station 10 stops first shrinkage pool, the 401 delivery hydraulic pressure oil to hydraulic cylinder at once; Then it is oily to second shrinkage pool, 402 delivery hydraulic pressure of hydraulic cylinder; Hydraulic oil gets into hydraulic cylinder 4 inside through second shrinkage pool 402; The promotion piston moves upward; Pressure head 5 also along with moving upward, is press-fitted end.When piston moved upward, Hydraulic Station 10 made the hydraulic oil that is in the piston top through in first shrinkage pool 401 and high-pressure oil pipe oil return to the Hydraulic Station 10 through reversal valve.At last, take out the trimmer valve parts 12 that have been press-fitted.After taking out trimmer valve parts 12, unnecessary hydraulic oil falls in the pressure head 5, and first deep gouge 601, through hole 605, the 4th shrinkage pool 602 and oil pipe through on the base 6 flow in the fuel tank of high-pressure oil pump 8.
In being press-fitted process, 5 pairs of trimmer valve 12 applied pressures of pressure head are bigger, and for avoiding the damage of delivery valve 1204, the bottom surface that the periphery of first deep gouge 601 of base is provided with lining 603, the first deep gouges 601 is provided with packing ring 604.When placing delivery valve 1204, delivery valve 1204 is positioned among the lining 603, on the packing ring 604.When being press-fitted, delivery valve 1204 contacts with packing ring 604 with lining 603.Can protect delivery valve 1204 like this, avoid it directly to contact, damage delivery valve 1204 with base 6.
For guaranteeing in being press-fitted process, the active force that 5 pairs of trimmer valves 12 of pressure head apply is uniformly all the time, and first deep gouge 601 of base, the through hole 502 of pressure head and the piston rod 403 in the hydraulic cylinder are coaxially set.Like this, after placing delivery valve 1204, the dead in line of the axis of trimmer valve 12 and first deep gouge 601.When being press-fitted, the central point of the active force of 5 pairs of trimmer valves 12 of pressure head on the axis of trimmer valve 12, can be avoided the trimmer valve 12 stressed phenomenons that vary in size all the time.
Claims (6)
1. experimental rig that is press-fitted that is used for trimmer valve; It is characterized in that, comprise upper bearing plate (1), lower support plate (2), column (3), hydraulic cylinder (4), pressure head (5), base (6), triple valve (7), high-pressure oil pump (8), sensor (9), Hydraulic Station (10); Wherein,
A) this upper bearing plate (1) is fixedly connected through column (3) with lower supporting plate (2), and upper backup pad (1) and lower supporting plate (2) are parallel to each other, and both respectively have a through hole;
B) this hydraulic cylinder (4) is fixedly connected on the end face of upper bearing plate (1), and the top of hydraulic cylinder (4) is provided with first shrinkage pool (401), and it is inside and outside that this first shrinkage pool (401) is communicated with hydraulic cylinder (4); The lower end of hydraulic cylinder (4) is provided with second shrinkage pool (402), and it is inside and outside that this second shrinkage pool (402) is communicated with hydraulic cylinder (4); Piston rod (403) in the hydraulic cylinder (4) is passed down through the through hole of upper backup pad (1), and the bottom of this piston rod (403) is provided with a pressure head (5); The bottom surface of this pressure head (5) is the plane, and its side is provided with the 3rd shrinkage pool (501), and its lower end is provided with a through hole (502), and the 3rd shrinkage pool (501) and through hole (502) are communicated with;
C) end face of this lower supporting plate (2) is provided with a base (6); The upper end of this base (6) is provided with first deep gouge (601); The lower end is provided with the 4th shrinkage pool (602), and the 4th shrinkage pool (602) is communicated with the through hole on first deep gouge (601) and the lower support plate (2);
D) the 3rd shrinkage pool (501) of first port (701) of this triple valve (7) and pressure head (5) is connected through high-pressure oil pipe; The output of its second port (702) and high-pressure oil pump (8) is connected through high-pressure oil pipe, and the input of its 3rd port (703) and sensor (9) is connected through high-pressure oil pipe; The 4th shrinkage pool (602) of the fuel tank of high-pressure oil pump (8) and base (6) is connected through oil pipe, and sensor (9) output is connected through data wire with the control system of Hydraulic Station (10); The output of Hydraulic Station (10) has two, is connected through high-pressure oil pipe with second shrinkage pool (402) with first shrinkage pool (401) of hydraulic cylinder (4) respectively.
2. according to the described experimental rig that is press-fitted that is used for trimmer valve of claim 1, it is characterized in that the periphery of first deep gouge (601) of described base is provided with lining (603), the bottom surface of first deep gouge (601) is provided with packing ring (604).
3. according to claim 1 or the 2 described experimental rigs that are press-fitted that are used for trimmer valve, it is characterized in that the piston rod (403) in first deep gouge (601) of described base, the through hole (502) of pressure head and the hydraulic cylinder is coaxially set.
4. according to the described experimental rig that is press-fitted that is used for trimmer valve of claim 3, it is characterized in that, the longitudinal section of first shrinkage pool (401) of described hydraulic cylinder be shaped as ┓ or ┏, the longitudinal section of second shrinkage pool (402) be shaped as ┛ or ┗.
5. according to the described experimental rig that is press-fitted that is used for trimmer valve of claim 4; It is characterized in that; Also comprise four oil connections (11), the fixed seal connection of this oil connection (11) difference is in first shrinkage pool (401), second shrinkage pool (402), the 3rd shrinkage pool (501) and the 4th shrinkage pool (602).
6. according to the described experimental rig that is press-fitted that is used for trimmer valve of claim 5, it is characterized in that having a through hole (605) to link to each other between described first deep gouge (601) and the 4th shrinkage pool (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158658 CN102303235B (en) | 2011-06-14 | 2011-06-14 | Press fit testing device for buffer valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158658 CN102303235B (en) | 2011-06-14 | 2011-06-14 | Press fit testing device for buffer valve |
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| CN102303235A true CN102303235A (en) | 2012-01-04 |
| CN102303235B CN102303235B (en) | 2013-03-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102699669A (en) * | 2012-05-30 | 2012-10-03 | 台州联方机电科技有限公司 | Micro-seal ring ferrule module |
| CN102990336A (en) * | 2012-11-28 | 2013-03-27 | 苏州博德自动化科技有限公司 | Motor shell loading device of automatic press-in assembling machine of motor shell bearing |
| CN104400427A (en) * | 2014-12-01 | 2015-03-11 | 西北工业大学 | Assembly table based on grouping technique |
| CN106768970A (en) * | 2017-01-13 | 2017-05-31 | 平湖康弗莱尔汽车发动机系统有限公司 | One-way valve of oil duct detection means |
| CN107932039A (en) * | 2017-12-22 | 2018-04-20 | 南阳淅减汽车减振器有限公司 | A kind of shock absorber packing gland press-loading device |
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Cited By (5)
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| CN102699669A (en) * | 2012-05-30 | 2012-10-03 | 台州联方机电科技有限公司 | Micro-seal ring ferrule module |
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| CN106768970A (en) * | 2017-01-13 | 2017-05-31 | 平湖康弗莱尔汽车发动机系统有限公司 | One-way valve of oil duct detection means |
| CN107932039A (en) * | 2017-12-22 | 2018-04-20 | 南阳淅减汽车减振器有限公司 | A kind of shock absorber packing gland press-loading device |
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| CN102303235B (en) | 2013-03-20 |
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