CN207470511U - A kind of electric transportation fork truck safety valve - Google Patents
A kind of electric transportation fork truck safety valve Download PDFInfo
- Publication number
- CN207470511U CN207470511U CN201721278696.XU CN201721278696U CN207470511U CN 207470511 U CN207470511 U CN 207470511U CN 201721278696 U CN201721278696 U CN 201721278696U CN 207470511 U CN207470511 U CN 207470511U
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- CN
- China
- Prior art keywords
- valve body
- spool
- lower valve
- slot
- fork truck
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Forklifts And Lifting Vehicles (AREA)
- Safety Valves (AREA)
Abstract
The utility model discloses a kind of electric transportation fork truck safety valve, including upper valve body, lower valve body, elastic cylindrical pin and spool, it is characterized in that：The upper valve body and lower valve body are in hollow tubular, it is threadedly coupled between the upper valve body and lower valve body, spool upper end sleeve is in lower valve body cavity, the spool top plan pressing has spring, the spool top plan is equipped with slot, the through-hole communicated with slot is equipped at left and right sides of the spool, the elastic cylindrical pin sequentially passes through PATENT left side via, slot and right side through-hole, the lower valve body lower inner side wall is equipped with groove, spherical pieces are equipped in the groove, the left and right sides of the spool upper end is equipped with bellmouth, leaf spring is equipped in the spool, the leaf spring both ends are fixedly connected across bellmouth with spherical pieces.A kind of the advantages of electric transportation fork truck safety valve of the utility model is reasonable design, can effectively control the flow of hydraulic oil in safety valve.
Description
Technical field
The utility model discloses a kind of electric transportation fork truck safety valve, belongs to safety valve technical field.
Background technology
Electric transportation fork truck is a kind of by horizontal transport and the handler that is combined of vertical lift, have handling, pile,
The functions such as de-stacking, short-distance transport.Existing electri forklift is using accumulator as power source, drives running motor and hydraulic system electricity
Machine controls the traveling of fork truck and promotion with this, and electri forklift is in operation sometimes, because extraneous factor or failure itself make it
The oil pipe high pressure of hydraulic system causes the flow of oil outlet pipe at oil pump to increase, and piston rod declines rapidly, so as to cause pallet fork with
And cargo fast ram ground, titanic peril is brought to people or object.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide for a kind of electric transportation fork truck peace
Full valve, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides following technical solution to realize：
A kind of electric transportation fork truck safety valve, including upper valve body, lower valve body, elastic cylindrical pin and spool, it is characterized in that：
The upper valve body and lower valve body are threadedly coupled between the upper valve body and lower valve body, are set in the lower valve body in hollow tubular
There are ED elastic seal rings, for spool upper end sleeve in lower valve body cavity, the spool top plan pressing has spring, described
Spring upper end is fixedly connected with upper valve body lower face, and the spool top plan is equipped with slot, is set at left and right sides of the spool
There is the through-hole communicated with slot, the elastic cylindrical pin sequentially passes through PATENT left side via, slot and right side through-hole, the elastic cylinder
Pin both ends are fixedly connected with lower valve body madial wall, and the lower valve body lower inner side wall is equipped with groove, and spherical shape is equipped in the groove
Block, the left and right sides of the spool upper end are equipped with bellmouth, leaf spring are equipped in the spool, the leaf spring both ends pass through bellmouth
It is fixedly connected with spherical pieces.
As preferred：The diameter of the spring is more than the diameter of slot.
As preferred：The shape of the groove is consistent with bellmouth bigger diameter end shape, and the diameter of the spherical pieces is more than cone
The path in shape hole.
The beneficial effects of the utility model：
By rotating upper valve body, upper valve body lower face is risen or fallen, so as to change the decrement of spring, has reached tune
Save the effect of safety valve limit value.Fork truck start to work when, hydraulic oil from through-hole flow into, successively by slot, lower valve body cavity and
Upper valve body cavity is flowed out from upper valve body, and what spool offset that spool bottom surface is subject to by the device that spherical pieces and leaf spring are formed rushes
Power is hit, when pressure reaches certain value, leaf spring shrinks under the impact of hydraulic oil and spherical pieces is pulled to leave groove, and spool is under
Valve cavity moves upwards, and through-hole is gradually blocked by lower valve body inner wall, and flow also decreases in lower valve body cavity, forms level-one
Slow down.After spherical pieces enter bellmouth, spool offsets the impact force that spool bottom surface is subject to by the elastic force of spring, works as hydraulic oil
When being more than spring force to the impact force of spool bottom surface, spool rises to be fitted closely with lower valve body bottom surface, and lower valve body cavity is closed,
Oil circuit is cut off with this, plays the role of protective device.
Description of the drawings
Fig. 1 is a kind of structure diagram of electric transportation fork truck safety valve of the utility model；
Fig. 2 is the structure diagram at A in Fig. 1；
Fig. 3 is the front view of spool；
Fig. 4 is the vertical view of spool.
Reference numeral：
1st, upper valve body；2nd, lower valve body；3rd, ED elastic seal rings；4th, spring；5th, elastic cylindrical pin；6th, spool；7th, slot；8、
Through-hole；9th, spherical pieces；10th, leaf spring；11st, groove；12nd, bellmouth.
Specific embodiment
It is described further with reference to a kind of electric transportation fork truck of Fig. 1-4 pairs of the utility model with safety valve.
A kind of electric transportation fork truck safety valve, it is special including upper valve body 1, lower valve body 2, elastic cylindrical pin 5 and spool 6
Sign is：The upper valve body 1 and lower valve body 2 are threadedly coupled, under described in hollow tubular between the upper valve body 1 and lower valve body 2
Valve body 2 is equipped with ED elastic seal rings 3, and the 6 upper end sleeve of spool is in 2 cavity of lower valve body, the 6 top flat face pressure of spool
By there is spring 4,4 upper end of spring is fixedly connected with 1 lower face of upper valve body, and 6 top plan of spool is equipped with slot 7,
6 left and right sides of spool is equipped with the through-hole 8 communicated with slot 7, and the elastic cylindrical pin 5 sequentially passes through PATENT left side via 8, slot
7 and right side through-hole 8,5 both ends of elastic cylindrical pin be fixedly connected with 2 madial wall of lower valve body, 2 lower inner side wall of lower valve body
Equipped with groove 11, spherical pieces 9 are equipped in the groove 11, the left and right sides of 6 upper end of spool is equipped with bellmouth 12, the valve
Leaf spring 10 is equipped in core 6,10 both ends of leaf spring are fixedly connected across bellmouth 12 with spherical pieces 9.The diameter of the spring 4 is big
In the diameter of slot 7.The shape of the groove 11 is consistent with 12 bigger diameter end shape of bellmouth, and the diameter of the spherical pieces 9 is more than
The path of bellmouth 12.
By rotating upper valve body 1,1 lower face of upper valve body is risen or fallen, so as to change the decrement of spring 4, has been reached
To the effect of regulation safety valve limit value.When fork truck is started to work, hydraulic oil is flowed into from through-hole 8, successively by slot 7, lower valve body 2
1 cavity of cavity and upper valve body, flows out from upper valve body 1, and spool 6 offsets spool 6 by the device that spherical pieces 9 and leaf spring 10 are formed
The impact force that bottom surface is subject to, when pressure reach certain value when, leaf spring 10 shunk under the impact of hydraulic oil and pull spherical pieces 9 from
Recessing 11, spool 6 are moved upwards along 2 cavity of lower valve body, and through-hole 8 is gradually blocked by 2 inner wall of lower valve body, in 2 cavity of lower valve body
Flow also decreases, and forms primary speed-down.After spherical pieces 9 enter bellmouth 12, spool 6 is offset by the elastic force of spring 4
The impact force that 6 bottom surface of spool is subject to, when hydraulic oil is more than spring force to the impact force of 6 bottom surface of spool, spool 6 is risen to under
2 bottom surface of valve body fits closely, and 2 cavity of lower valve body is closed, and is cut off oil circuit with this, is played the role of protective device.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, several improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (3)
1. a kind of electric transportation fork truck safety valve, including upper valve body, lower valve body, elastic cylindrical pin and spool, it is characterized in that：Institute
Upper valve body and lower valve body are stated in hollow tubular, is threadedly coupled between the upper valve body and lower valve body, the lower valve body is equipped with
ED elastic seal rings, for spool upper end sleeve in lower valve body cavity, the spool top plan pressing has spring, the bullet
Spring upper end is fixedly connected with upper valve body lower face, and the spool top plan is equipped with slot, is equipped at left and right sides of the spool
The through-hole communicated with slot, the elastic cylindrical pin sequentially pass through PATENT left side via, slot and right side through-hole, the elastic cylindrical pin
Both ends are fixedly connected with lower valve body madial wall, and the lower valve body lower inner side wall is equipped with groove, and spherical pieces are equipped in the groove,
The left and right sides of the spool upper end is equipped with bellmouth, is equipped with leaf spring in the spool, the leaf spring both ends pass through bellmouth with
Spherical pieces are fixedly connected.
2. a kind of electric transportation fork truck safety valve according to claim 1, it is characterized in that：The diameter of the spring is more than
The diameter of slot.
3. a kind of electric transportation fork truck safety valve according to claim 1, it is characterized in that：The shape and cone of the groove
Shape hole bigger diameter end shape is consistent, and the diameter of the spherical pieces is more than the path of bellmouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278696.XU CN207470511U (en) | 2017-09-19 | 2017-09-19 | A kind of electric transportation fork truck safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278696.XU CN207470511U (en) | 2017-09-19 | 2017-09-19 | A kind of electric transportation fork truck safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207470511U true CN207470511U (en) | 2018-06-08 |
Family
ID=62267564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721278696.XU Active CN207470511U (en) | 2017-09-19 | 2017-09-19 | A kind of electric transportation fork truck safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207470511U (en) |
-
2017
- 2017-09-19 CN CN201721278696.XU patent/CN207470511U/en active Active
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