CN110370003B - Anti-pinch assembly device for hydraulic lifting cylinder for vehicle - Google Patents
Anti-pinch assembly device for hydraulic lifting cylinder for vehicle Download PDFInfo
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- CN110370003B CN110370003B CN201910753896.3A CN201910753896A CN110370003B CN 110370003 B CN110370003 B CN 110370003B CN 201910753896 A CN201910753896 A CN 201910753896A CN 110370003 B CN110370003 B CN 110370003B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an anti-pinch assembly device for a hydraulic lifting cylinder for a vehicle, which is provided with a pressing cylinder, a positioning cylinder, an anti-pinch photoelectric switch, a stroke magnetic switch of an adjusting cylinder, a proximity switch for sensing objects, a lifting motor for adjusting the assembly height of the hydraulic cylinder, a PLC (programmable logic controller) for controlling the action of the cylinder and an electromagnetic valve.
Description
Technical Field
The invention relates to the technical field of assembly of hydraulic lifting cylinders for vehicles, in particular to an anti-pinch assembly device for a hydraulic lifting cylinder for a vehicle.
Background
When the hydraulic lifting cylinder for the vehicle is assembled, the hydraulic rod needs to be pressed into the hydraulic cylinder barrel, and at present, the assembly of the hydraulic lifting cylinder for the vehicle usually adopts manual operation, namely, the hydraulic rod of the hydraulic lifting cylinder for the vehicle is pressed into the hydraulic cylinder barrel of the hydraulic lifting cylinder for the vehicle by using manpower, so that the operation is time-consuming and labor-consuming and has low efficiency, and therefore, the hydraulic lifting cylinder anti-pinch assembly device for the vehicle is required to be provided, so that the problems are solved.
Disclosure of Invention
The invention aims to provide an anti-pinch assembly device for a hydraulic lifting cylinder of a vehicle, which aims to solve the problems that the operation is time-consuming and labor-consuming and the efficiency is low because a hydraulic rod of the hydraulic lifting cylinder of the vehicle is pressed into a hydraulic cylinder barrel of the hydraulic lifting cylinder of the vehicle by manpower at present.
The invention provides an anti-pinch assembly device for a hydraulic lifting cylinder of a vehicle, which comprises a frame, wherein an upper mounting plate is arranged at the top of the frame, a lower mounting plate is arranged below the upper mounting plate, a lifting motor is arranged on the lower mounting plate, and a lifting platform for placing a cylinder barrel of the hydraulic lifting cylinder is arranged on the lifting motor;
A cylinder barrel positioning block and a cylinder barrel positioning cylinder which are oppositely arranged are arranged above the upper mounting plate, a piston rod of the cylinder barrel positioning cylinder stretches towards the cylinder barrel positioning block, and a cylinder barrel proximity switch is arranged on the cylinder barrel positioning block;
The inner side of the frame is provided with a lower pressing cylinder, the lower pressing cylinder penetrates through the lower mounting plate and the upper mounting plate, the upper mounting plate is provided with a vertical sliding rail, the vertical sliding rail is provided with a sliding plate, the sliding plate is in sliding connection with the vertical sliding rail in the vertical direction, and the sliding plate is connected with a piston rod of the lower pressing cylinder; the sliding plate is provided with a hydraulic rod first positioning cylinder and a hydraulic rod second positioning cylinder which are oppositely arranged, and a hydraulic rod proximity switch is arranged on one side of the hydraulic rod second positioning cylinder;
be provided with first push start button, second push start button and cylinder on the last mounting panel and loosen the button, the hydraulic stem proximity switch the cylinder proximity switch the first push start button the second pushes start button and the cylinder loosen the button and be connected with the input of PLC controller respectively, the cylinder of pushing down the cylinder location cylinder the first location cylinder of hydraulic stem and the hydraulic stem second location cylinder is connected through first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve with the output of PLC controller respectively.
Optionally, the top of vertical slide rail is provided with prevents tong photoelectric switch mounting panel, be provided with first tong photoelectric switch of preventing on the tong photoelectric switch mounting panel, first tong photoelectric switch of preventing with the input of PLC controller is connected.
Optionally, the number of the first anti-pinch photoelectric switches is four to six, and the distance between two adjacent first anti-pinch photoelectric switches is 1 cm.
Optionally, the first positioning cylinder of hydraulic rod with hydraulic rod second positioning cylinder is provided with first magnetism limit switch, the cylinder positioning cylinder is provided with second magnetism limit switch, first magnetism limit switch with second magnetism limit switch respectively with the input of PLC controller is connected.
Optionally, the pushing cylinder is provided with an adjusting cylinder travel magnetic switch, and the adjusting cylinder travel magnetic switch is connected with the input end of the PLC.
Optionally, the adjusting cylinder travel magnetic switch is fastened by a screw with a quincuncial plastic handle.
Optionally, the diameter of the plum blossom plastic handle is 2 cm, and the length of the screw is 3 cm.
Optionally, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are all double-control two-position middle-sealing electromagnetic valves.
Optionally, the first positioning cylinder of hydraulic rod with hydraulic rod second positioning cylinder still is provided with the second and prevents tong photoelectric switch, the cylinder positioning cylinder is provided with the third and prevents tong photoelectric switch, the second prevent tong photoelectric switch with the third prevent tong photoelectric switch respectively with the input of PLC controller is connected.
Optionally, the hydraulic rod proximity switch and the cylinder proximity switch are both induction magnetic proximity switches.
The beneficial effects of the invention are as follows: according to the anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle, provided by the invention, the hydraulic rod is pressed into the hydraulic cylinder barrel in a semi-automatic manner in the assembly process of the hydraulic lifting cylinder for the vehicle through arranging the pressing cylinder, the positioning cylinder, the anti-pinch photoelectric switch, the adjusting cylinder travel magnetic switch, the proximity switch for sensing objects, the lifting motor for adjusting the assembly height of the hydraulic cylinder barrel and the PLC and the electromagnetic valve for controlling the action of the cylinder barrel, the assembly process is safe and reliable, the pinch is avoided, the assembly efficiency is high, the problem that manual press-mounting of the hydraulic rod is laborious and time-consuming and low is effectively solved, the labor intensity of workers is reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an angle structure of an anti-pinch assembly device for a hydraulic lifting cylinder for a vehicle;
Fig. 2 is a schematic structural view of another angle of the anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle;
fig. 3 is a circuit diagram of a PLC controller of the anti-pinch assembly device for a hydraulic lifting cylinder for a vehicle according to the present invention;
Fig. 4 is a circuit diagram of a solenoid valve of the anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle;
Fig. 5 is a schematic diagram of a cylinder solenoid valve air path of the anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle.
Illustration of: 100-comprises a rack; 102-an upper mounting plate; 101-a lower mounting plate; 9-lifting motor; 200-lifting platform; 11-cylinder positioning cylinder; 6-cylinder proximity switch; 10-pressing down the cylinder; 300-vertical slide rail; 400-sliding plate; 14-a hydraulic rod first positioning cylinder; 15-a hydraulic rod second positioning cylinder; 3-hydraulic lever proximity switch; 16-first depression of the start button; 17-a second depression of the start button; 18-a cylinder release button; 19-a first solenoid valve; 20-a second solenoid valve; 21-a third solenoid valve; 22-a fourth solenoid valve; 1-a pinch-proof photoelectric switch mounting plate; 2-a first anti-pinch photoelectric switch; 4-a first magnetic limit switch; 13-a second magnetic limit switch; 8-adjusting a cylinder travel magnetic switch; 5-a second anti-pinch photoelectric switch; and 7-a third anti-pinch photoelectric switch.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, thicknesses of layers and regions are exaggerated for clarity, and identical reference numerals are used to denote identical devices, and thus descriptions thereof will be omitted.
Referring to fig. 1 to 5, an embodiment of the invention provides a device for preventing a clamping hand of a hydraulic lifting cylinder for a vehicle, which is used for assembling a hydraulic lifting cylinder barrel and a hydraulic rod of the hydraulic lifting cylinder for the vehicle. The anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle comprises a frame 100, wherein an upper mounting plate 102 is arranged at the top of the frame 100, a lower mounting plate 101 is arranged below the upper mounting plate 102, and the upper mounting plate 102 and the lower mounting plate 101 are arranged in parallel.
Wherein, be provided with elevator motor 9 on the mounting panel 101 down, be provided with the lift platform 200 of placing hydraulic pressure and lifting the jar cylinder on the elevator platform 200 on the elevator motor 9, can place hydraulic pressure and lifting the jar cylinder on the assembly, elevator motor 9 is used for adjusting the height of elevator platform 200.
Specifically, a cylinder positioning block and a cylinder positioning cylinder 11 which are oppositely arranged are arranged above the upper mounting plate 102, a piston rod of the cylinder positioning cylinder 11 stretches towards the cylinder positioning block, and a cylinder proximity switch 6 is arranged on the cylinder positioning block. When the cylinder barrel is placed on the lifting platform 200, the cylinder barrel proximity switch 6 can sense the cylinder barrel, so that the cylinder barrel positioning cylinder 11 clamps the cylinder barrel between the cylinder barrel positioning block and the cylinder barrel positioning cylinder 11, and positioning of the cylinder barrel is achieved.
Specifically, a lower pressing cylinder 10 is arranged on the inner side of the frame 100, the lower pressing cylinder 10 penetrates through the lower mounting plate 101 and the upper mounting plate 102, a vertical sliding rail 300 is arranged on the upper mounting plate 102, a sliding plate 400 is arranged on the vertical sliding rail 300, the sliding plate 400 is in sliding connection with the vertical sliding rail 300 in the vertical direction, the sliding plate 400 is connected with a piston rod of the lower pressing cylinder 10, and the sliding plate 400 can be driven to slide up and down in the vertical sliding rail 300 through the lower pressing cylinder 10. The sliding plate 400 is provided with a first hydraulic rod positioning cylinder 14 and a second hydraulic rod positioning cylinder 15 which are oppositely arranged, one side of the second hydraulic rod positioning cylinder 15 is provided with a hydraulic rod proximity switch 3, and when the hydraulic rod is placed on the cylinder barrel, the hydraulic rod proximity switch 3 can sense the hydraulic rod, so that the first hydraulic rod positioning cylinder 14 and the second hydraulic rod positioning cylinder 15 are contacted to clamp the hydraulic rod to realize positioning. The hydraulic lever proximity switch 3 and the cylinder barrel proximity switch 6 are both induction magnetic proximity switches.
Further, a first push start button 16 is provided on the upper mounting plate 102, which can control the push cylinder 10 to push down the hydraulic rod a short distance into the cylinder, a second push start button 17 can control the push cylinder 10 to push all the hydraulic rod into the hydraulic cylinder after the snap ring is installed in the snap ring groove of the cylinder, and a cylinder release button 18 can control the cylinder positioning cylinder 11 to release to take out the cylinder of the hydraulic lifting cylinder.
The hydraulic lever proximity switch 3, the cylinder barrel proximity switch 6, the first pressing start button 16, the second pressing start button 17 and the cylinder barrel loosening button 18 are respectively connected with the input end of the PLC controller, and the pressing cylinder 10, the cylinder barrel positioning cylinder 11, the hydraulic lever first positioning cylinder 14 and the hydraulic lever second positioning cylinder 15 are respectively connected with the output end of the PLC controller through a first electromagnetic valve 19, a second electromagnetic valve 20, a third electromagnetic valve 21 and a fourth electromagnetic valve 22. The first solenoid valve 19, the second solenoid valve 20, the third solenoid valve 21 and the fourth solenoid valve 22 are all double-control two-position middle-sealing solenoid valves.
As a preferred embodiment, the top end of the vertical sliding rail 300 is provided with a pinch-proof photoelectric switch mounting plate 1, a first pinch-proof photoelectric switch 2 is arranged on the pinch-proof photoelectric switch mounting plate 1, the first pinch-proof photoelectric switch 2 is connected with the input end of the PLC controller, the number of the first pinch-proof photoelectric switches 2 is four to six and no reflector is needed, and the distance between two adjacent first pinch-proof photoelectric switches 2 is 1 cm. The hydraulic rod first positioning cylinder 14 and the hydraulic rod second positioning cylinder 15 are further provided with a second anti-pinch photoelectric switch 5, the cylinder barrel positioning cylinder 11 is provided with a third anti-pinch photoelectric switch 7, and the second anti-pinch photoelectric switch 5 and the third anti-pinch photoelectric switch 7 are respectively connected with the input end of the PLC controller. When objects such as hands are in the light area of the anti-pinch photoelectric switch, the corresponding anti-pinch photoelectric switch can send signals to control the lower pressing cylinder 10, the hydraulic rod first positioning cylinder 14 and the hydraulic rod second positioning cylinder 15 or the cylinder barrel positioning cylinder 11 to stop to act so as to avoid pinching hands.
As a preferred embodiment, the hydraulic rod first positioning cylinder 14 and the hydraulic rod second positioning cylinder 15 are provided with a first magnetic limit switch 4, the cylinder barrel positioning cylinder 11 is provided with a second magnetic limit switch 13, and the first magnetic limit switch 4 and the second magnetic limit switch 13 are respectively connected with the input end of the PLC controller. The lower pressure cylinder 10 is provided with an adjusting cylinder travel magnetic switch 8, and the adjusting cylinder travel magnetic switch 8 is connected with the input end of the PLC.
Further, the adjusting cylinder travel magnetic switch 8 is fastened by a screw with a quincuncial plastic handle, the diameter of the quincuncial plastic handle is 2 cm, and the length of the screw is 3 cm.
The circuit diagram of the PLC and the circuit diagram of the electromagnetic valve of the anti-pinch assembling device for the hydraulic lifting cylinder of the vehicle can be respectively referred to as fig. 3 and 4, and fig. 5 is a schematic air path diagram of an air cylinder electromagnetic valve of the anti-pinch assembling device for the hydraulic lifting cylinder of the vehicle, wherein the first electromagnetic valve 19, the second electromagnetic valve 20, the third electromagnetic valve 21 and the fourth electromagnetic valve 22 are respectively communicated with a 5L air storage tank 23 on the air path, the air storage tank 23 is communicated with a total air source 25, and an oil-water separator 24 is arranged between the air storage tank 23 and the total air source 25.
When the anti-pinch assembling device for the hydraulic lifting cylinder for the vehicle is used, a hydraulic cylinder barrel can be placed in advance, the bottom of the cylinder barrel is contacted with the lifting platform 200, the upper part of the cylinder barrel is abutted against a left cylinder barrel positioning block, and when a cylinder barrel is sensed by a cylinder barrel approach switch 6 on the cylinder barrel positioning block, the cylinder barrel positioning cylinder 11 clamps the cylinder barrel. Then put the hydraulic stem on the cylinder, when the hydraulic stem proximity switch 3 inducted there is the object, the hydraulic stem first positioning cylinder 14 stretches out, the hydraulic stem first positioning cylinder 14 and the hydraulic stem second positioning cylinder 15 that has stretched out in advance clamp the hydraulic stem, then press the first and push the start button 16, the hydraulic stem short distance of the pushing down cylinder 10 gets into the cylinder, its purpose is to make when adorning the snap ring need not to assist the hydraulic stem. The first positioning cylinder 14 of the hydraulic rod and the second positioning cylinder 15 of the hydraulic rod also move downwards at the same time, the pressing time can be set to 1 second, the first positioning cylinder 14 of the hydraulic rod and the second positioning cylinder 15 of the hydraulic rod retract after 1 second, the pressing cylinder 10, the first positioning cylinder 14 of the hydraulic rod and the second positioning cylinder 15 of the hydraulic rod ascend together, then the snap ring is manually installed in the snap ring groove of the cylinder barrel, the snap ring is used for preventing the hydraulic rod from sliding out of the cylinder barrel when ascending, the second pressing start button 17 is pressed after the snap ring is installed, the pressing cylinder 10 presses the hydraulic rods into the hydraulic cylinder barrel completely, the cylinder barrel loosening button 18 is pressed, the cylinder barrel positioning cylinder 11 is loosened, and the hydraulic lifting cylinder is taken out.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be capable of being practiced otherwise than as specifically illustrated and described.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle is characterized by comprising a frame (100), wherein an upper mounting plate (102) is arranged at the top of the frame (100), a lower mounting plate (101) is arranged below the upper mounting plate (102), a lifting motor (9) is arranged on the lower mounting plate (101), and a lifting platform (200) for placing a cylinder barrel of the hydraulic lifting cylinder is arranged on the lifting motor (9);
A cylinder positioning block and a cylinder positioning cylinder (11) which are oppositely arranged are arranged above the upper mounting plate (102), a piston rod of the cylinder positioning cylinder (11) stretches towards the cylinder positioning block, and a cylinder proximity switch (6) is arranged on the cylinder positioning block;
A lower air cylinder (10) is arranged on the inner side of the frame (100), the lower air cylinder (10) penetrates through the lower mounting plate (101) and the upper mounting plate (102), a vertical sliding rail (300) is arranged on the upper mounting plate (102), a sliding plate (400) is arranged on the vertical sliding rail (300), the sliding plate (400) is in sliding connection with the vertical sliding rail (300) in the vertical direction, and the sliding plate (400) is connected with a piston rod of the lower air cylinder (10); the sliding plate (400) is provided with a first hydraulic rod positioning cylinder (14) and a second hydraulic rod positioning cylinder (15) which are oppositely arranged, and one side of the second hydraulic rod positioning cylinder (15) is provided with a hydraulic rod proximity switch (3);
The upper mounting plate (102) is provided with a first pressing start button (16), a second pressing start button (17) and a cylinder barrel loosening button (18), the hydraulic rod proximity switch (3), the cylinder barrel proximity switch (6), the first pressing start button (16), the second pressing start button (17) and the cylinder barrel loosening button (18) are respectively connected with the input end of the PLC, and the pressing cylinder (10), the cylinder barrel positioning cylinder (11), the hydraulic rod first positioning cylinder (14) and the hydraulic rod second positioning cylinder (15) are respectively connected with the output end of the PLC through a first electromagnetic valve (19), a second electromagnetic valve (20), a third electromagnetic valve (21) and a fourth electromagnetic valve (22);
the anti-pinch photoelectric switch is characterized in that an anti-pinch photoelectric switch mounting plate (1) is arranged at the top end of the vertical sliding rail (300), a first anti-pinch photoelectric switch (2) is arranged on the anti-pinch photoelectric switch mounting plate (1), and the first anti-pinch photoelectric switch (2) is connected with the input end of the PLC.
2. The anti-pinch assembly device for the hydraulic lifting cylinder of the vehicle according to claim 1, wherein the number of the first anti-pinch photoelectric switches (2) is four to six, and the distance between two adjacent first anti-pinch photoelectric switches (2) is 1 cm.
3. The anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle according to claim 1, wherein the hydraulic rod first positioning cylinder (14) and the hydraulic rod second positioning cylinder (15) are provided with a first magnetic limit switch (4), the cylinder barrel positioning cylinder (11) is provided with a second magnetic limit switch (13), and the first magnetic limit switch (4) and the second magnetic limit switch (13) are respectively connected with the input end of the PLC controller.
4. The anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle according to claim 1, wherein the pressing cylinder (10) is provided with an adjusting cylinder travel magnetic switch (8), and the adjusting cylinder travel magnetic switch (8) is connected with the input end of the PLC.
5. The anti-pinch assembly device for a hydraulic lifting cylinder for a vehicle according to claim 4, wherein the adjusting cylinder travel magnetic switch (8) is fastened by a screw with a quincuncial plastic handle.
6. The anti-pinch assembly device of a hydraulic lift cylinder for a vehicle according to claim 5, wherein the diameter of the quincuncial plastic handle is 2 cm, and the length of the screw is 3 cm.
7. The anti-pinch assembly device for a hydraulic lifting cylinder of claim 1, wherein the first solenoid valve (19), the second solenoid valve (20), the third solenoid valve (21) and the fourth solenoid valve (22) are all double-control two-position middle-seal solenoid valves.
8. The anti-pinch assembly device for the hydraulic lifting cylinder for the vehicle according to claim 1, wherein the hydraulic rod first positioning cylinder (14) and the hydraulic rod second positioning cylinder (15) are further provided with a second anti-pinch photoelectric switch (5), the cylinder barrel positioning cylinder (11) is provided with a third anti-pinch photoelectric switch (7), and the second anti-pinch photoelectric switch (5) and the third anti-pinch photoelectric switch (7) are respectively connected with the input end of the PLC controller.
9. The anti-pinch assembly device for a hydraulic lifting cylinder for a vehicle according to claim 1, wherein the hydraulic rod proximity switch (3) and the cylinder proximity switch (6) are both induction magnetic proximity switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753896.3A CN110370003B (en) | 2019-08-15 | 2019-08-15 | Anti-pinch assembly device for hydraulic lifting cylinder for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753896.3A CN110370003B (en) | 2019-08-15 | 2019-08-15 | Anti-pinch assembly device for hydraulic lifting cylinder for vehicle |
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| Publication Number | Publication Date |
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| CN110370003A CN110370003A (en) | 2019-10-25 |
| CN110370003B true CN110370003B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910753896.3A Active CN110370003B (en) | 2019-08-15 | 2019-08-15 | Anti-pinch assembly device for hydraulic lifting cylinder for vehicle |
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| CN (1) | CN110370003B (en) |
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| Publication number | Publication date |
|---|---|
| CN110370003A (en) | 2019-10-25 |
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