CN210973717U - Hydraulic shear type lifter anti-toppling automatic adjusting device - Google Patents
Hydraulic shear type lifter anti-toppling automatic adjusting device Download PDFInfo
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- CN210973717U CN210973717U CN201921804892.5U CN201921804892U CN210973717U CN 210973717 U CN210973717 U CN 210973717U CN 201921804892 U CN201921804892 U CN 201921804892U CN 210973717 U CN210973717 U CN 210973717U
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- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 239000003921 oil Substances 0.000 claims description 84
- 239000010720 hydraulic oil Substances 0.000 claims description 32
- 230000000994 depressogenic effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a fluid pressure type is cut formula machine of lifting and is prevented empting automatically regulated device, its characterized in that: the utility model discloses the hydraulic pressure formula of cutting lifts the machine and prevents empting automatic regulating apparatus and can the automatically regulated first, two owner hydraulic pressure oil circuits of automatically regulated to make the hydraulic pressure liquid pressure in first cavity, the second cavity the same, make the highly uniform that first formula of cutting lifts the machine and the lifting of second formula of cutting, reduce the danger that the car emptys that the hydraulic pressure formula of cutting lifts the machine and prevents empting and lift the formula of cutting of the formula of cutting and lift the machine and lift the actuating mechanism that lifts that is used for lifting the car jointly that two sets of parallel arrangement included, this two sets of formula of cutting lifts the machine and is the first formula of cutting and lift the machine of the second formula of cutting respectively, first formula of cutting, second are cut and are equipped with first owner hydraulic pressure oil circuit and the main hydraulic pressure oil circuit of second on.
Description
The technical field is as follows:
the utility model relates to a fluid pressure type formula of cutting lifts quick-witted automatic regulating apparatus that prevents empting.
Background art:
the automobile needs to be lifted by a lifting machine in the maintenance process, and the phenomenon that the automobile falls off due to unbalanced lifting of the lifting machine is frequent, so that great danger and loss are caused; the height of the hydraulic lifting machine is changed mainly through the change of oil pressure, but the lifting machine has the possibility that oil pipes are aged or extruded, so that oil cannot be conveyed normally, the rising heights of two sides of the shear type lifting machine are inconsistent, and the automobile is prone to toppling.
The prior invention patent is as follows: the utility model provides an alarm device that inclines is prevented to machine of lifting, application number is CN201810337134.0, and this patent car top installation detects car inclination angle sensor, when the car takes place to incline, sends the warning to cut off the power, let the machine of lifting not work. Have two post car machines of lifting in addition to empty alarm device, application number: CN201811423999.5, which is not yet granted, and is a patent applied by the applicant, which judges whether the car is in danger of falling down by a pressure sensor, generates an alarm, and cuts off the power supply of the lifter.
The above two patent applications mainly lie in that the lifting machine working circuit is cut off when lifting imbalance occurs, and the condition that the heights of two sides of the lifting machine are not uniform can not be automatically adjusted.
The invention content is as follows:
to the above problem, the utility model provides a fluid pressure type formula of cutting lift machine prevents empting automatically regulated device, fluid pressure type formula of cutting lift machine prevents empting automatically regulated device can change the condition that two lifts the machine height is nonuniform.
The utility model discloses fluid pressure type is cut formula machine of lifting and is prevented empting automatically regulated device, its characterized in that: the anti-toppling device comprises two groups of shear type lifting machines and an anti-toppling executing mechanism which are arranged in parallel and used for lifting an automobile together, wherein the two groups of shear type lifting machines are respectively a first shear type lifting machine and a second shear type lifting machine, the first shear type lifting machine and the second shear type lifting machine are respectively provided with a first main hydraulic oil circuit and a second main hydraulic oil circuit, the anti-toppling executing mechanism comprises a valve body, a valve core arranged in the valve body and an oil storage tank arranged outside the valve body, a first cavity communicated with the first main hydraulic oil circuit, a second cavity communicated with the second main hydraulic oil circuit and an intermediate cavity positioned between the first cavity and the second cavity are arranged in the valve body, the valve core is arranged in the intermediate cavity, a first pipeline communicated with the oil storage tank, a fourth pipeline communicated with the oil storage tank, a second pipeline communicated with the first cavity and the intermediate cavity and a third pipeline communicated with the second cavity and the intermediate cavity are arranged in the middle of the valve body, the inlet of the second pipeline communicated with the middle cavity is close to the second cavity, the inlet of the third pipeline communicated with the middle cavity is close to the first cavity, the communicating inlet of the fourth pipeline and the middle cavity is provided with two inlets, one of the inlets is close to the first cavity, the other inlet is close to the second cavity, the inlets of the second pipeline and the first cavity, the inlet of the third pipeline and the inlet of the second cavity are provided with one-way valves, the first pipeline is connected with an oil pump in series, the valve core comprises a central stepped shaft with the diameter matched with the middle cavity and baffles arranged at two ends of the central stepped shaft, and two sides of the central part of the central stepped shaft are provided with reducing sections.
Further, above-mentioned central stepped shaft includes middle part shaft section, is located the reducing section of middle part shaft section both sides and is located the outer axle section in the reducing section outside, first pipeline is located the entrance of middle cavity and has first rectangle depressed groove, the width of middle part shaft section is less than the width of rectangle depressed groove.
Furthermore, the fourth pipeline is divided into two branch pipes in the valve body, and a second rectangular depressed groove is formed at the communication inlet of the two branch pipes and the middle cavity.
Furthermore, the first, second, third and fourth pipelines are not communicated.
Further, the length of the central stepped shaft is greater than that of the intermediate cavity.
Furthermore, the opposite surfaces of the two lifting plates on the first scissor type lifting machine and the second scissor type lifting machine are respectively provided with a receiver and a transmitter of a photoelectric sensor, the receiver and the transmitter of the photoelectric sensor are electrically connected with a controller, and the controller is electrically connected with a driving motor of the oil pump.
The utility model discloses the hydraulic pressure formula of cutting machine lift prevents empting automatically regulated device's operating method, the formula of cutting that the formula of cutting was used for lifting the car jointly that the formula of cutting lift and the executive mechanism that prevents empting that the formula of cutting lift was cut to the fluid pressure type was prevented empting automatically regulated device includes two sets of parallel arrangement, and this two sets of formula of cutting lifts the machine and is the first formula of cutting lift and the second formula of cutting lift respectively, first formula of cutting lifts and second cuts and is equipped with first main hydraulic circuit and second main hydraulic circuit on the formula of cutting lift respectively, prevent empting the executive mechanism and include the valve body, establish the case in the valve body and establish the batch oil tank outside the valve body, be equipped with the first cavity with first main hydraulic circuit intercommunication in the valve body, with the second cavity of second main hydraulic circuit intercommunication and lie in the middle cavity between first cavity and the second cavity, be equipped with the case in the middle part of the valve body, the first pipeline that communicates with the batch oil tank, The valve core comprises a central stepped shaft with the diameter matched with the middle cavity and baffles arranged at two ends of the central stepped shaft, and two sides of the central part of the central stepped shaft are provided with reducing sections; when the anti-toppling device works, the anti-toppling executing mechanism is not started to work when the lifting heights of the first scissor type lifter and the second scissor type lifter are consistent, and the anti-toppling executing mechanism is started to work when the lifting heights of the first scissor type lifter and the second scissor type lifter are inconsistent.
Furthermore, as the first cavity is communicated with the first main hydraulic oil circuit, the first main hydraulic oil circuit flows into the first cavity, the second cavity is communicated with the second main hydraulic oil circuit, and the second main hydraulic oil circuit flows into the second cavity, because the first cavity and the second cavity in the valve body have the same structure, when the first main hydraulic oil circuit and the second main hydraulic oil circuit have the same oil pressure, the oil flows into the first cavity and the second cavity have the same oil amount, and at the moment, the first cavity and the second cavity have the same pressure, the pressure of the two baffle plates of the valve core is the same, and the valve core does not move at the middle position; when the first or second main hydraulic oil circuit is abnormal, if the second main hydraulic oil circuit is blocked, the pressure of the second cavity is lower than that of the first cavity, so that the heights of the two sides of the first scissor lift and the second scissor lift are inconsistent, a receiver in the photoelectric sensor cannot receive a signal, a motor signal of the oil pump is given, and the oil pump starts to pump oil; the valve core can move axially, so that the valve core is close to the second cavity, at the moment, oil in the oil storage tank is input into the middle cavity from the first pipeline due to continuous oil pumping, the oil cannot enter the right part of the middle cavity and returns to the oil storage tank from the third pipeline, at the moment, the check valve of the second cavity is jacked open, the oil enters the second cavity, the oil pressure of the second main hydraulic oil way can continuously rise due to the connection of the second cavity and the second main hydraulic oil way, the second shear type lifting machine normally acts, the pressure difference between the two cavities is reduced, and the oil in the second cavity can be well compensated along with continuous oil pumping; when the oil pressure difference between the two cavities of the first cavity and the second cavity is slowly reduced, the valve body can slowly slide towards the first cavity, but before the valve core slides to the positive center of the valve body, because the valve core is inconsistent with the inlet of each pipeline in size, the oil pressure flowing into the third pipeline is still larger than that of the second pipeline, at the moment, more oil can still be pumped into the second cavity, until the oil pressures of the first cavity and the second cavity are the same, and the valve core can stop when sliding to the positive center of the valve body.
Furthermore, the oil pressure of the first cavity is the same as that of the second cavity, namely the valve core is positioned at the positive center of the valve body, but a receiver of the sensor is blocked by maintenance personnel or other reasons, at the moment, a motor of the oil pump can also act, so that the oil pump pumps oil, at the moment, because the first main hydraulic pipe and the second main hydraulic pipe work normally, the pressures of the first cavity and the second cavity are also the same, the first cavity and the second cavity enter the middle cavity from the oil storage tank through the first pipeline, and finally the first cavity and the second cavity flow back to the oil storage tank through the fourth; although the oil liquid flows into the second pipeline and the third pipeline, the check valves are arranged in the first cavity and the second cavity which are communicated with the second pipeline and the third pipeline, and the pressure is too small to open the check valves, so that the oil liquid still flows back into the oil storage tank.
The utility model discloses the fluid pressure type is cut formula machine of lifting and is prevented empting automatically regulated device can the automatically regulated first, two main hydraulic pressure oil circuits to make the oil hydraulic pressure force in first cavity, the second cavity the same, make first formula of cutting machine of lifting and the second cut the highly uniform that the formula of cutting machine of lifting lifted, reduce the danger that the car emptys.
Description of the drawings:
FIG. 1 is a schematic diagram of the operation of the present invention;
FIG. 2 is a state view of the anti-toppling actuator;
FIG. 3 is another operational state diagram of the anti-toppling actuator;
FIG. 4 is a control schematic;
wherein K is an automobile.
The specific implementation mode is as follows:
the utility model discloses hydraulic pressure formula of cutting lifts machine and prevents empting automatically regulated device includes that two sets of parallel arrangement's the formula of cutting that is used for lifting the car jointly lift 1 and prevent empting actuating mechanism 2, this two sets of formula of cutting lifts machine 1 and is first formula of cutting lifts machine 101 and second formula of cutting lifts machine 102 respectively, and first formula of cutting lifts machine 101 and second formula of cutting lifts machine 102 the same structure, first formula of cutting lifts machine 101, second is cut and is equipped with first main hydraulic circuit 3 and second main hydraulic circuit 4 on lifting machine 102 respectively, and first main hydraulic circuit 3 and second main hydraulic circuit 4 are mutually independent pipeline, and first main hydraulic circuit 3 is the first formula of cutting and lifts hydraulic main pipeline or the bleeder line of cylinder, and second main hydraulic circuit 4 is the second formula of cutting lifts hydraulic main pipeline or the bleeder line of cylinder of machine 102, prevent empting actuating mechanism 2 includes valve body 5 (valve body 5 makes for metal material), The hydraulic control valve comprises a valve core 6 (the valve core 6 can be made of rubber materials) arranged in the valve body and an oil storage tank 7 (used for storing hydraulic oil) arranged outside the valve body, wherein a first cavity 8 communicated with a first main hydraulic oil path 3, a second cavity 9 communicated with a second main hydraulic oil path 4 and a middle cavity 10 positioned between the first cavity and the second cavity are arranged in the valve body 5, the valve core 6 is arranged in the middle cavity 10, and the valve core 6 can move axially in the middle cavity.
A first pipeline 11 communicated with the oil storage tank 7, a fourth pipeline 12 communicated with the oil storage tank 7, a second pipeline 13 communicated with the first cavity 8 and the middle cavity 10, and a third pipeline 14 communicated with the second cavity 9 and the middle cavity 10 are arranged in the middle of the valve body 5, the inlet of the second pipeline 13 communicated with the middle cavity 10 is close to the second cavity 9, the inlet of the third pipeline 14 communicated with the middle cavity 10 is close to the first cavity 8, the communicated inlets of the fourth pipeline 12 and the middle cavity 10 are provided with two inlets, one of the two inlets is close to the first cavity 8, the other one is close to the second cavity 9, the inlets of the second pipeline 13 and the first cavity 8 and the inlets of the third pipeline 14 and the second cavity 9 are provided with one-way valves 15 (the one-way valves 15 can be one-way ball valves), an oil pump 16 is connected in series on the first pipeline 11, the oil pump 16 works under the driving action of a motor 28, the valve core 6 comprises a central stepped shaft 17 with the diameter matched with the middle cavity 10 and baffle plates 18 arranged at two ends The central stepped shaft 17 has reduced diameter sections 19 on both sides of the central portion.
Further, for reasonable in design, above-mentioned central stepped shaft 17 includes middle part shaft segment 20, is located the reducing section 19 of middle part shaft segment both sides and is located the outer axle section 21 in the reducing section 19 outside, first pipeline 11 is located the entrance of middle cavity and has first rectangle depressed groove 22, and first rectangle depressed groove 22 is for encircling the ring channel in middle cavity, the width of middle part shaft segment is less than the width of rectangle depressed groove, and this width is only slightly less than to make central stepped shaft 17 axial displacement back hydraulic oil get into behind first pipeline 11, the first rectangle depressed groove 22, can get into the reducing section 19 of middle cavity, and flow back to oil storage tank 7 from fourth pipeline 12.
Furthermore, for reasonable design, the fourth pipeline 12 is branched into two branch pipes 23 in the valve body, the two branch pipes 23 are provided with a second rectangular concave groove 24 at the communication inlet of the middle cavity 10, and the second rectangular concave groove 24 is also an annular groove surrounding the middle cavity.
The first pipeline, the second pipeline, the third pipeline and the fourth pipeline are not communicated so as to ensure mutually independent work.
Furthermore, the length of the central stepped shaft is greater than that of the middle cavity, and the central stepped shaft can axially move in the middle cavity through the length of the central stepped shaft being greater than that of the middle cavity.
Further, the opposite surfaces of the two lifting plates 29 on the first scissor lift and the second scissor lift are respectively provided with a receiver 25 and a transmitter 26 of a photoelectric sensor, the receiver and the transmitter of the photoelectric sensor are electrically connected with a controller 27, the controller 27 is electrically connected with a driving motor 28 of an oil pump, the receiver 25 and the transmitter 26 of the photoelectric sensor are installed on the opposite surfaces of the two lifting plates 29, when the lifting heights of the lifting plates 29 where the receiver 25 and the transmitter 26 are located are consistent, the receiver 25 can receive a transmission signal of the transmitter 26, the controller does not drive the driving motor 28 and the oil pump to work, when the lifting heights of the lifting plates 29 where the receiver 25 and the transmitter 26 are located are inconsistent, the receiver 25 cannot receive the transmission signal of the transmitter 26, the controller drives the driving motor 28 and the oil pump to work, and accordingly the first cavity 8 is realized, The pressure in the second chamber 9 is the same, so that the lifting height of the lifting plate 29 is consistent again.
The utility model discloses the hydraulic pressure formula of cutting machine lift prevents empting automatically regulated device's operating method, the formula of cutting that the formula of cutting was used for lifting the car jointly that the formula of cutting lift and the executive mechanism that prevents empting that the formula of cutting lift was cut to the fluid pressure type was prevented empting automatically regulated device includes two sets of parallel arrangement, and this two sets of formula of cutting lifts the machine and is the first formula of cutting lift and the second formula of cutting lift respectively, first formula of cutting lifts and second cuts and is equipped with first main hydraulic circuit and second main hydraulic circuit on the formula of cutting lift respectively, prevent empting the executive mechanism and include the valve body, establish the case in the valve body and establish the batch oil tank outside the valve body, be equipped with the first cavity with first main hydraulic circuit intercommunication in the valve body, with the second cavity of second main hydraulic circuit intercommunication and lie in the middle cavity between first cavity and the second cavity, be equipped with the case in the middle part of the valve body, the first pipeline that communicates with the batch oil tank, The valve core comprises a central stepped shaft with the diameter matched with the middle cavity and baffles arranged at two ends of the central stepped shaft, and two sides of the central part of the central stepped shaft are provided with reducing sections; when the anti-toppling executing mechanism works, when the lifting heights of the first scissor type lifter and the second scissor type lifter are consistent, the anti-toppling executing mechanism is not started to work, the inner part of the anti-toppling executing mechanism is shown in figure 2 at the moment, and when the lifting heights of the first scissor type lifter and the second scissor type lifter are inconsistent, the inner part of the anti-toppling executing mechanism is shown in figure 3 at the moment, and the anti-toppling executing mechanism is started to work.
Furthermore, because the first cavity is communicated with the first main hydraulic oil circuit, the first main hydraulic oil circuit flows into the first cavity, the second cavity is communicated with the second main hydraulic oil circuit, and the second main hydraulic oil circuit flows into the second cavity, because the first cavity and the second cavity in the valve body have the same structure, when the first main hydraulic oil circuit and the second main hydraulic oil circuit have the same oil pressure, the oil flows into the first cavity and the second cavity have the same oil amount, and at the moment, the first cavity and the second cavity have the same pressure, the pressure of the two baffle plates of the valve core is the same, and the valve core is not moved at the middle position (at the moment, the interior of the anti-toppling executing mechanism is shown in figure 2); when the first or second main hydraulic oil path is abnormal, if the second main hydraulic oil path is blocked, the pressure of the second cavity is lower than that of the first cavity (at the moment, the inner part of the anti-toppling execution mechanism is shown in figure 3), the heights of the two sides of the first scissor lift and the second scissor lift are inconsistent, a receiver in the photoelectric sensor cannot receive a signal, and the oil pump starts to pump oil if the signal is not received by a receiver in the photoelectric sensor; the valve core can move axially, so that the valve core is close to the second cavity, at the moment, oil in the oil storage tank is input into the middle cavity from the first pipeline due to continuous oil pumping, the oil cannot enter the right part of the middle cavity and returns to the oil storage tank from the third pipeline, at the moment, the check valve of the second cavity is jacked open, the oil enters the second cavity, the oil pressure of the second main hydraulic oil way can continuously rise due to the connection of the second cavity and the second main hydraulic oil way, the second shear type lifting machine normally acts, the pressure difference between the two cavities is reduced, and the oil in the second cavity can be well compensated along with continuous oil pumping; when the oil pressure difference between the two cavities of the first cavity and the second cavity is slowly reduced, the valve body can slowly slide towards the first cavity, but before the valve core slides to the positive center of the valve body, because the valve core is inconsistent with the inlet of each pipeline in size, the oil pressure flowing into the third pipeline is still larger than that of the second pipeline, at the moment, more oil can still be pumped into the second cavity, until the oil pressures of the first cavity and the second cavity are the same, and the valve core can stop when sliding to the positive center of the valve body.
Furthermore, the oil pressure of the first cavity is the same as that of the second cavity, namely the valve core is positioned at the right center of the valve body (at this time, the interior of the anti-toppling executing mechanism is shown in fig. 2), but the receiver of the sensor is blocked by maintenance personnel or other reasons, at this time, the motor of the oil pump can also be operated, so that the oil pump pumps oil, at this time, because the first main hydraulic pipe and the second main hydraulic pipe work normally, the pressure of the first cavity is the same as that of the second cavity, the first cavity enters the middle cavity from the oil storage tank through the first pipeline, and finally, the first cavity and the second cavity flow back; although the oil liquid flows into the second pipeline and the third pipeline, the check valves are arranged in the first cavity and the second cavity which are communicated with the second pipeline and the third pipeline, and the pressure is too small to open the check valves, so that the oil liquid still flows back into the oil storage tank.
The utility model discloses the fluid pressure type is cut formula machine of lifting and is prevented empting automatically regulated device can the automatically regulated first, two main hydraulic pressure oil circuits to make the oil hydraulic pressure force in first cavity, the second cavity the same, make first formula of cutting machine of lifting and the second cut the highly uniform that the formula of cutting machine of lifting lifted, reduce the danger that the car emptys.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (6)
1. The utility model provides a hydraulic pressure formula of cutting machine of lifting prevents empting automatically regulated device which characterized in that: the anti-toppling device comprises two groups of shear type lifting machines and an anti-toppling executing mechanism which are arranged in parallel and used for lifting an automobile together, wherein the two groups of shear type lifting machines are respectively a first shear type lifting machine and a second shear type lifting machine, the first shear type lifting machine and the second shear type lifting machine are respectively provided with a first main hydraulic oil circuit and a second main hydraulic oil circuit, the anti-toppling executing mechanism comprises a valve body, a valve core arranged in the valve body and an oil storage tank arranged outside the valve body, a first cavity communicated with the first main hydraulic oil circuit, a second cavity communicated with the second main hydraulic oil circuit and an intermediate cavity positioned between the first cavity and the second cavity are arranged in the valve body, the valve core is arranged in the intermediate cavity, a first pipeline communicated with the oil storage tank, a fourth pipeline communicated with the oil storage tank, a second pipeline communicated with the first cavity and the intermediate cavity and a third pipeline communicated with the second cavity and the intermediate cavity are arranged in the middle of the valve body, the inlet of the second pipeline communicated with the middle cavity is close to the second cavity, the inlet of the third pipeline communicated with the middle cavity is close to the first cavity, the communicating inlet of the fourth pipeline and the middle cavity is provided with two inlets, one of the inlets is close to the first cavity, the other inlet is close to the second cavity, the inlets of the second pipeline and the first cavity, the inlet of the third pipeline and the inlet of the second cavity are provided with one-way valves, the first pipeline is connected with an oil pump in series, the valve core comprises a central stepped shaft with the diameter matched with the middle cavity and baffles arranged at two ends of the central stepped shaft, and two sides of the central part of the central stepped shaft are provided with reducing sections.
2. The hydraulic scissor lift anti-toppling automatic adjusting device of claim 1, wherein: the central stepped shaft comprises a middle shaft section, reducing sections located on two sides of the middle shaft section and an outer shaft section located on the outer side of the reducing sections, a first rectangular depressed groove is formed in an inlet of the first pipeline located in the middle of the cavity, and the width of the middle shaft section is smaller than that of the rectangular depressed groove.
3. The hydraulic scissor lift anti-toppling automatic adjusting device of claim 1, wherein: the fourth pipeline is divided into two branch pipes in the valve body, and a second rectangular sunken groove is formed in the communication inlet of the two branch pipes and the middle cavity.
4. The hydraulic scissor lift anti-toppling automatic adjusting device of claim 1, wherein: the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are not communicated.
5. The hydraulic scissor lift anti-toppling automatic adjusting device of claim 1, wherein: the length of the central stepped shaft is greater than that of the middle cavity.
6. The hydraulic scissor lift anti-toppling automatic adjusting device of claim 1, wherein: the first scissor lift and the second scissor lift are provided with a receiver and a transmitter of a photoelectric sensor on the opposite surfaces of two lifting plates respectively, the receiver and the transmitter of the photoelectric sensor are electrically connected with a controller, and the controller is electrically connected with a driving motor of an oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921804892.5U CN210973717U (en) | 2019-10-25 | 2019-10-25 | Hydraulic shear type lifter anti-toppling automatic adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921804892.5U CN210973717U (en) | 2019-10-25 | 2019-10-25 | Hydraulic shear type lifter anti-toppling automatic adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210973717U true CN210973717U (en) | 2020-07-10 |
Family
ID=71443913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921804892.5U Expired - Fee Related CN210973717U (en) | 2019-10-25 | 2019-10-25 | Hydraulic shear type lifter anti-toppling automatic adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210973717U (en) |
-
2019
- 2019-10-25 CN CN201921804892.5U patent/CN210973717U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200710 |