CN102097751B - Hydraulic electricity test handcart tool - Google Patents
Hydraulic electricity test handcart tool Download PDFInfo
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- CN102097751B CN102097751B CN201010588158A CN201010588158A CN102097751B CN 102097751 B CN102097751 B CN 102097751B CN 201010588158 A CN201010588158 A CN 201010588158A CN 201010588158 A CN201010588158 A CN 201010588158A CN 102097751 B CN102097751 B CN 102097751B
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Abstract
The embodiment of the invention provides a hydraulic electricity test handcart tool, which comprises a hydraulic power device, a fixed mount and a pushing device, wherein the hydraulic power device is fixed on the fixed mount; two long holes which extend in the horizontal direction and have different heights are respectively formed on both sides of the front end of the fixed mount; the pushing device is arranged in the fixed mount; two push pins with different heights are respectively arranged on both sides of the front end of the pushing device and pass through the two long holes on the same side of the front end of the fixed mount respectively from the inner side of the fixed mount; the power output end of the hydraulic power device is fixedly connected with the rear end of the pushing device, so that the power output end drives the push pins of the pushing device to move back and forth in the long holes in the fixed mount; an overflow oilway is formed between an oil discharging oilway and an oil return oilway in the hydraulic power device; and an overflow valve is arranged in the overflow oilway, so that oil in the oil discharging oilway flows back to an oil tank from an overflow channel when oil pressure in the oil discharging oilway overcomes spring pressure in the overflow valve.
Description
Technical field
The present invention relates to the power engineering field, relate in particular to a kind of fluid pressure type electrical verification handcart instrument that is used to open switch cubicle.
Background technology
Along with the continuous development of national economy, power consumption also constantly increases.Newly-built electric substation is many like the mushrooms after rain rises sheer from level ground.And high-tension switch cabinet is the key equipment that plays effects such as break-make, control or protection in electric power system generating, transmission of electricity, distribution, electric energy conversion with in consuming.In order to open high-tension switch cabinet, the high-tension switch cabinet of various brands all is furnished with electrical verification handcart instrument.These electrical verification handcart instruments all are that clean steel is made, and volume is quite huge and very heavy, and weight is usually between 200 kilograms to 500 kilograms.Existing electrical verification handcart instrument in use; Need set up guide rail earlier, push away electrical verification handcart instrument, go into guide rail, push position and crank hand layer operation; Opening in the process of electrical verification door at the electrical verification handcart, vertically is that the own wt with electrical verification handcart instrument is a gravity, laterally leans on manpower advancing in the electrical verification handcart instrument king cabinet; By the link mechanism that opens the door of the work pin of electrical verification handcart instrument extruding switch cubicle, open the door of switch cubicle with this.This process needs at least two people to cooperate together usually and painstakingly just can open the cabinet door jointly.Because electrical verification handcart volume and weight is all very big, therefore adopt the mode of this pure artificial application of force can cause work to waste time and energy, especially problem is even more serious when large-scale multi-compartment electrical verification is operated.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of fluid pressure type electrical verification handcart instrument, this instrument is in light weight, uses laborsaving.
For realizing above-mentioned purpose; One embodiment of the present of invention provide a kind of fluid pressure type electrical verification handcart instrument; Comprise hydraulic power unit, fixed mount and thrust unit, said hydraulic power unit is fixed on the fixed mount; The front end both sides of said fixed mount respectively are provided with extend and the highly different slotted hole of two horizontal directions; Said thrust unit is located in the fixed mount, and thrust unit front end both sides respectively are provided with two highly different distributions, and two slotted holes of fixed mount front end the same side are passed in two distributions of the every side of thrust unit front end respectively from the inboard of fixed mount; The clutch end of said hydraulic power unit is fixedly connected with the rear end of thrust unit, so that move forward and backward in the slotted hole of distribution in fixed mount of clutch end driving thrust unit;
Said hydraulic power unit comprises: fuel tank, pumping cylinder and hydraulic cylinder; Between pumping cylinder and fuel tank, oil suction line is set; In this oil suction line, be provided with oil sucting one-way valve, the oil extraction oil circuit is set between pumping cylinder and hydraulic cylinder, in this oil extraction oil circuit, be provided with the oil extraction unidirectional valve; Between hydraulic cylinder and fuel tank, oil return circuit is set, in this oil return loop, is provided with break valve;
The overflow oil circuit is set between oil extraction oil circuit and oil return circuit, in said overflow oil circuit, an overflow valve is set, be used for when the oil pressure of oil extraction oil circuit overcomes the spring pressure in the overflow valve, making that the oil in the oil extraction oil circuit flows back to the fuel tank from overflow ducts.
Preferably, in said oil extraction oil circuit and oil return circuit, choke valve is set all.
Preferably, the rear portion of said fixed mount is the fixed station of fixed hydraulic power device, and the middle part is two stable pipes, and the front portion is the angle steel type metallic plate, and said two metal circular tubes and angle steel type metallic plate are formed the triangle rock-steady structure; Said slotted hole is located at the both sides of angle steel type metallic plate.Said thrust unit has three link rods of one one-tenth Vee formation shape; The two ends, base angle of the Vee formation shape of forming at said three link rods are fixing one fixed head that laterally arranges along fore-and-aft direction respectively, the outside of said fixed head be provided with the fixed head vertical direction extend on promote and promote down.
Preferably, the fixed station of said fixed hydraulic power device below and issuing of angle steel type metallic plate are provided with wheel.
Preferably, the rear end of the fixed station of said fixed hydraulic power device is fixedly connected with at least one location metallic plate, and the free end and the ground fixture of said location metallic plate offset.
Preferably, said fixture and thrust unit are processed by aluminium alloy.
Fluid pressure type electrical verification handcart instrument among the present invention is power with the hydraulic power unit; Adopted the technology of hydraulic jack; Can reach maximum thrust; Through pin step on or the hand push hydraulic power unit in pump oil treadle (being handle) originally needing just can realize the several people to push away, shake as possible the power effect that just can reach as possible, the process of unlatching electrical verification door is very laborsaving.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the overall schematic that the present invention provides a kind of fluid pressure type electrical verification handcart instrument;
Fig. 2 is the end view of the fluid pressure type electrical verification handcart instrument among Fig. 1;
Fig. 3 is the vertical view of the fluid pressure type electrical verification handcart instrument among Fig. 1;
Fig. 4 is the concrete structure sketch map of the fixed mount in the fluid pressure type electrical verification handcart instrument among the present invention;
Fig. 5 is the sketch map of the fixed station part among Fig. 4;
Fig. 6 is a structural representation of having installed the fixed station of hydraulic power unit;
Fig. 7 is thrust unit and the part-structure sketch map of hydraulic power unit among Fig. 1;
Fig. 8 is the structural representation of a kind of modified model hydraulic power unit in the fluid pressure type electrical verification handcart instrument of the present invention;
Fig. 9 is the structural representation of the another kind of modified model hydraulic power unit of the fluid pressure type electrical verification handcart instrument among the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Fig. 1 is the overall schematic that the present invention provides a kind of fluid pressure type electrical verification handcart instrument, and Fig. 2 is the end view of the fluid pressure type electrical verification handcart instrument among Fig. 1, and Fig. 3 is the vertical view of the fluid pressure type electrical verification handcart instrument among Fig. 1.To shown in Figure 3, this fluid pressure type electrical verification handcart instrument comprises hydraulic power unit 1, fixed mount 2 and thrust unit 3 like Fig. 1.Wherein, hydraulic power unit 1 is fixed on the fixed mount 2, and the front end both sides of fixed mount 2 respectively are provided with two along continuous straight runs and extend and highly different slotted holes 231 and 232.Thrust unit 3 is located in the fixed mount 2, and thrust unit 3 front end both sides respectively are provided with highly different distribution 33 and 34 (followingly can the distribution 33 of top be called distribution, the distribution 34 of below be called down promote).The every side of thrust unit 3 front ends go up to promote 33 with promote down 34 pass fixed mount 2 front end the same sides respectively from the inboard of fixed mount 2 two slotted holes 231 and 232.The clutch end of hydraulic power unit 1 is fixedly connected with the rear end of thrust unit 3; Hydraulic power unit 1 can drive thrust unit 3 through its clutch end and move forward and backward like this, and then makes going up on the thrust unit 3 promote 231 to move forward and backward with promoting down in 323 the slotted holes 231 and 232 in fixed mount 2.
Fluid pressure type electrical verification handcart instrument among the present invention is power with the hydraulic power unit; Adopted the technology of hydraulic jack, can reach maximum thrust, through pin step on or hand push hydraulic power unit 1 in pump oil treadle originally needing just can realize the several people to push away, shake as possible the power effect that just can reach as possible; In the course of the work; Hydraulic power unit 1 provides power for thrust unit 3, accomplishes the action of opening the door by the distribution on the thrust unit 3, thereby opens high-voltage switch gear electrical verification door cashier's office in a shop.
Below specify the detailed structure of each important component part in the fluid pressure type electrical verification handcart instrument among the present invention.
Fig. 4 is the concrete structure sketch map of the fixed mount in the fluid pressure type electrical verification handcart instrument among the present invention, and as shown in Figure 4, the rear portion of this fixed mount 2 is the fixed station 21 of fixed hydraulic power device 1, and the middle part is two stable pipes 22, and the front portion is an angle steel type metallic plate 23.All be provided with two slotted holes in the both sides of angle steel type metallic plate, be designated as 231 and 232 respectively.Wherein the height of slotted hole 231 is higher than slotted hole 232.Fig. 5 is the sketch map of fixed station 21 parts among Fig. 4, and Fig. 6 is for installing the structural representation of the fixed station 21 of hydraulic power unit 1.
In order to make fluid pressure type electrical verification handcart instrument in opening electrical verification door process, can not move backward owing to reaction force; Preferably; Be fixedly connected at least one location metallic plate 4 in the rear end of fixed station 21; The free end of location metallic plate 4 can offset with ground fixture (the for example cabinet angle steel of high-tension switch cabinet), in case solution stopping pressure type electrical verification handcart instrument is drawn back.
Fig. 7 shows thrust unit and the part-structure sketch map of hydraulic power unit among Fig. 1; As shown in Figure 7, this thrust unit 3 has three link rods being Vee formation shape and (in Fig. 7, is labeled as 31 as the link rod of two hypotenuses of Vee formation shape; Link rod as the base is labeled as 32); These three link rods form stable triangle rock-steady structure, and two link rods 31 at rear portion receive the thrust of hydraulic power unit 1, and anterior link rod 32 can play the effect that the structure of thrust unit 3 is fixed.
The fixed head 35 that laterally arranges along fore-and-aft direction of two ends, the base angle of three link rods (being the angle between link rod 31 and the link rod 32) fixing respectively in the above.The outside of fixed head 35 be provided with fixed head 35 vertical direction extend on promote 33 with promote 34 down.Thrust unit 3 among the present invention adopts two modes of promoting; Distribution 34 is used for promoting the linkage of opening the door of electrical verification door wherein; Last promote 33 be used to push open the linkage of opening the door of electrical verification door self-locking device, go up simultaneously and promote 33 and withstand top board, tilt upward to prevent whole electrical verification handcart instrument.
In addition; On above-mentioned electrical verification handcart instrument, can also increase other servicing units; For example; Below the fixed station 21 of fixed hydraulic power device 1 and angle steel type metallic plate 23 below be provided with wheel, can further facilitate the position that the user moves whole fluid pressure type electrical verification handcart instrument like this, so that its easier entering service position or withdraw from the service position.
In order to alleviate the weight of whole electrical verification handcart instrument, can fixture and thrust unit be processed by aluminium alloy.Like this can be so that electrical verification handcart instrument is portable light and handy.
Moreover the present invention has also proposed two kinds of follow-on hydraulic power units in order to make traditional hydraulic jack technology can more be applicable to the application scenario of electrical verification handcart instrument, below specifies.
Fig. 8 shows the structural representation of a kind of modified model hydraulic power unit in the fluid pressure type electrical verification handcart instrument of the present invention.The hydraulic jack technology is utilized hydraulic system to produce boosting power or is promoted weight.Its transmission based on basic principle be exactly pascal's principle; Be that liquid pressure everywhere is consistent, in the system of balance, the pressure ratio of exerting pressure above the smaller piston is less like this; And the pressure ratio of exerting pressure on the big piston is bigger; Can keep the static of liquid like this, therefore the transmission through liquid can obtain the different pressure on the different ends, thereby realizes the purpose of pressure conversion.
Below introduce the concrete structure of the hydraulic power unit among Fig. 8 in detail, this hydraulic power unit comprises a fuel tank 85, pumping cylinder 82 and hydraulic cylinder 811.Above the piston of pumping cylinder 82, be provided with handle 81.Between fuel tank 85 and pumping cylinder 82, be provided with oil suction line 86, in oil suction line 86, be provided with oil sucting one-way valve 84, this oil sucting one-way valve 84 guarantees that in oil suction line hydraulic oil can only flow to pumping cylinder 81 from fuel tank 85, and can not reverse flow; Between pumping cylinder 82 and hydraulic cylinder 811, be provided with oil extraction oil circuit 89, in oil extraction oil circuit 89, be provided with oil extraction unidirectional valve 83, this oil extraction unidirectional valve 83 guarantees that hydraulic oil can only flow to hydraulic cylinder 811 from pumping cylinder 82 in the oil extraction oil circuit, and can not reverse flow.Step on handle 81 through hand or pin; Make the hydraulic oil in the pumping cylinder 82 get in the hydraulic cylinder 811 through oil extraction unidirectional valve 83; And enter into hydraulic cylinder 811 hydraulic oil since the effect of oil extraction unidirectional valve 83 can not fall back again; Force the piston of hydraulic cylinder 811 outside, thereby it is outside to promote weight, in the present invention for thrust unit 3 is pushed away forward.Between hydraulic cylinder 811 and fuel tank 82, be provided with oil return circuit 87, in oil return circuit 87, be provided with break valve 88.In the time need the piston of hydraulic cylinder 811 being drawn back, can open break valve 88, make that the hydraulic oil in the hydraulic cylinder 811 returns to the fuel tank 85 from oil return circuit 87.
Hypertonia for the hydraulic oil of anti-locking system is provided with skimmer circuit 814 in the hydraulic power unit among Fig. 8 between oil extraction oil circuit 89 and oil return circuit 87, an overflow valve 813 is set in skimmer circuit 814.Overflow valve 813 is used to prevent that handle 81 still continues pump oil, may cause the hypertonia of the hydraulic oil of system, system is produced dangerous when resistance (cabinet by high-tension switch cabinet produces to the back thrust that thrust unit produces in the present invention) is excessive.Through the selection of overflow valve 813 being set the spring of the intensity level in fixing, the system safety scope; Lead to when intrasystem hydraulic fluid pressure value surpasses the intensity level of spring of overflow valve 813, the retaining oil club in the overflow valve 813 is inwardly pressed by hydraulic oil, after the oily ball of retaining and sealing surface disengaging; Hydraulic oil just can be through the gap between oily ball of retaining and the sealing surface; Directly flow back to fuel tank 85 from overflow oil circuit 814, and when the hydraulic fluid pressure of system during less than the intensity of spring, keep off oily ball under the active force of spring again on sealing surface; Hydraulic oil just cannot flow back to fuel tank 81 through the gap; Therefore overflow valve 813 has played the effect of automatic draining, guaranteed the hydraulic fluid pressure in the system can not surpass safety that overflow valve sets it, also just guaranteed the safety of whole hydraulic system.
Fig. 9 shows the structural representation of the another kind of modified model hydraulic power unit of the fluid pressure type electrical verification handcart instrument among the present invention.On the basis of the hydraulic power unit of the hydraulic power unit among Fig. 9 in Fig. 8, in oil extraction oil circuit 89 and oil return circuit 816, a choke valve is set respectively again, is designated as 815 and 816 respectively.Through adjustable lever in rotary throttle valve 815 and 816 and the gap between the plane; Can make hydraulic oil to flow through through this gap; Therefore can set a fixed gap value,, thereby reach the purpose of the flow velocity and the flow of control oil channel hydraulic oil with the flow value of restriction hydraulic oil.When handle is worked or when opening break valve and being used for draining, guarantee that through choke valve the flow velocity of hydraulic oil can make the speed of hydraulic cylinder withdrawal become a fixed value, prevent that in the process of opening the electrical verification door back thrust is to the hydraulic cylinder power that impacts.But when the flow velocity of choke valve setting is crossed when low; The flow velocity of system's hydraulic oil is crossed and may be caused the local oil pressure of system too high slowly; For example; When utilizing handle 81 pump oil ratioes very fast, the pressure in the oil extraction oil circuit 89 between pumping cylinder 82 and the hydraulic cylinder 811 maybe be too high, and can avoid the excessive problem of pressure in the oil extraction oil circuit this moment through the automatic draining effect of overflow valve 813.
The method for using of the fluid pressure type electrical verification handcart instrument that provides among following simple declaration the present invention.
At first need fluid pressure type electrical verification handcart instrument be got into the service position, particularly, mention whole instrument, in reality, can only mention the instrument rear end, rely on the wheel of front end to move.To be positioned at the left and right rail of two aligner wheels tradition electrical verification handcarts bottom wheels of two ones, and earlier wheel put into guide rail, with instrument shift onto promote push up the position of electrical verification Men Kaimen link rod after, more whole instrument set level on ground.
Then, electrical verification handcart instrument is fixed, particularly, the earthing device of the right front bottom of affirmation instrument is fitted with copper earth plate, and the free end of location metallic plate 4 and the cabinet angle steel on ground are offseted, and confirms that break valve 88 is in closed condition.
Confirm afterwards whether ground connection work, the insulation work of whole electrical verification handcart instrument are accomplished, and whether the switch of switch cubicle closes a floodgate.
Carry out opening door operation, with the mode of foot-operated or hand, the handle of press tool downwards, be pressed onto the bottom after, handle can rebound automatically, generally opening high-tension switch cabinet needs to press continuously handle about 8 times usually, electrical verification this moment door can be opened fully.
Close the electrical verification door, after the completion electrical verification operation, at first guarantee safety, turn on break valve 88 then, make hydraulic oil slowly flow back in the fuel tank 85 through oil return circuit 87, hydraulic cylinder 811 is slowly withdrawn, and drives thrust unit 3 and draws back in the lump, and the electrical verification door is slowly closed.
The very light in weight that fluid pressure type electrical verification handcart instrument provided by the invention is whole; Staff's one hand can be mentioned, the fluid,matching pressing system, the staff only need foot-operated like a cork or the hand handle several times; Just can easily the electrical verification door of high-tension switch cabinet be opened; The volume of entire tool is also very little, and structure is simple relatively, and manufacturing cost is also very low.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (4)
1. fluid pressure type electrical verification handcart instrument; It is characterized in that; Comprise hydraulic power unit, fixed mount and thrust unit, said hydraulic power unit is fixed on the fixed mount; The front end both sides of said fixed mount respectively are provided with extend and the highly different slotted hole of two horizontal directions; Said thrust unit is located in the fixed mount, and thrust unit front end both sides respectively are provided with two highly different distributions, and two slotted holes of fixed mount front end the same side are passed in two distributions of the every side of thrust unit front end respectively from the inboard of fixed mount; The clutch end of said hydraulic power unit is fixedly connected with the rear end of thrust unit, so that move forward and backward in the slotted hole of distribution in fixed mount of clutch end driving thrust unit;
Said hydraulic power unit comprises: fuel tank, pumping cylinder and hydraulic cylinder; Between pumping cylinder and fuel tank, oil suction line is set; In this oil suction line, be provided with oil sucting one-way valve, the oil extraction oil circuit is set between pumping cylinder and hydraulic cylinder, in this oil extraction oil circuit, be provided with the oil extraction unidirectional valve; Between hydraulic cylinder and fuel tank, oil return circuit is set, in this oil return loop, is provided with break valve;
The overflow oil circuit is set between oil extraction oil circuit and oil return circuit, in said overflow oil circuit, an overflow valve is set, be used for when the oil pressure of oil extraction oil circuit overcomes the spring pressure in the overflow valve, making that the oil in the oil extraction oil circuit flows back to the fuel tank from overflow ducts.
2. fluid pressure type electrical verification handcart instrument according to claim 1; It is characterized in that; The rear portion of said fixed mount is the fixed station of fixed hydraulic power device; The middle part is two stable pipes, and the front portion is the angle steel type metallic plate, and said two stable pipes and angle steel type metallic plate are formed the triangle rock-steady structure; Said slotted hole is located at the both sides of angle steel type metallic plate.
3. fluid pressure type electrical verification handcart instrument according to claim 2 is characterized in that, the fixed station below of said fixed hydraulic power device and the below of angle steel type metallic plate are provided with wheel.
4. fluid pressure type electrical verification handcart instrument according to claim 2 is characterized in that, the rear end of the fixed station of said fixed hydraulic power device is fixedly connected with at least one location metallic plate, and the free end and the ground fixture of said location metallic plate offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010588158A CN102097751B (en) | 2010-12-14 | 2010-12-14 | Hydraulic electricity test handcart tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010588158A CN102097751B (en) | 2010-12-14 | 2010-12-14 | Hydraulic electricity test handcart tool |
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| Publication Number | Publication Date |
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| CN102097751A CN102097751A (en) | 2011-06-15 |
| CN102097751B true CN102097751B (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010588158A Active CN102097751B (en) | 2010-12-14 | 2010-12-14 | Hydraulic electricity test handcart tool |
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| CN (1) | CN102097751B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910754A (en) * | 2017-10-10 | 2018-04-13 | 国网浙江省电力公司湖州供电公司 | The isolation baffle plate device and electrical verification auxiliary device of switchgear circuit room |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097749B (en) * | 2010-12-14 | 2012-10-24 | 宁波电业局 | Electrometric handcart tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201616608U (en) * | 2009-12-16 | 2010-10-27 | 湖南省电力公司湘潭电业局 | Light electricity-testing and grounding trolley for middle-placed switch cabinet |
| CN102097749B (en) * | 2010-12-14 | 2012-10-24 | 宁波电业局 | Electrometric handcart tool |
| CN201956574U (en) * | 2010-12-14 | 2011-08-31 | 宁波电业局 | Hydraulic electricity checking handcart tool |
| CN201937168U (en) * | 2010-12-14 | 2011-08-17 | 宁波电业局 | Electricity-testing handcart tool |
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2010
- 2010-12-14 CN CN201010588158A patent/CN102097751B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910754A (en) * | 2017-10-10 | 2018-04-13 | 国网浙江省电力公司湖州供电公司 | The isolation baffle plate device and electrical verification auxiliary device of switchgear circuit room |
| CN107910754B (en) * | 2017-10-10 | 2019-05-17 | 国网浙江省电力公司湖州供电公司 | The isolation baffle plate device and electrical verification auxiliary device of switchgear route room |
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| Publication number | Publication date |
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| CN102097751A (en) | 2011-06-15 |
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