CN216271245U - Carriage hydraulic door lock of vehicle - Google Patents
Carriage hydraulic door lock of vehicle Download PDFInfo
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- CN216271245U CN216271245U CN202122231832.2U CN202122231832U CN216271245U CN 216271245 U CN216271245 U CN 216271245U CN 202122231832 U CN202122231832 U CN 202122231832U CN 216271245 U CN216271245 U CN 216271245U
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- door
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Abstract
The invention provides a carriage hydraulic door lock of a vehicle, comprising: the top of the first push rod extends out of the rear door oil cylinder, and the first push rod performs piston motion in the rear door oil cylinder; the electromagnetic directional valve is connected with a first oil line pipeline and a second oil line pipeline, the first oil line pipeline is connected with a first rodless cavity of the rear door oil cylinder, and the second oil line pipeline is connected with a first rod cavity of the rear door oil cylinder; and the number of the locking oil cylinders is matched with that of the rear door oil cylinders, a slidable second push rod is arranged in each locking oil cylinder, the top of the second push rod extends out of the locking oil cylinder, the second push rod does piston motion in the locking oil cylinder, a second rod cavity is communicated with a second oil pipeline through a third oil pipeline, a second rodless cavity is communicated with a first oil pipeline through a fourth oil pipeline, and a sequence valve is arranged on the fourth pipeline.
Description
Technical Field
The invention relates to the field of vehicle equipment, in particular to a carriage hydraulic door lock of a vehicle.
Background
Along with the rapid development of economy in recent years, the national requirements on environmental protection are higher and higher, and the kitchen waste is required to be transported by a pollution-free and zero-leakage special vehicle. When the kitchen waste truck is used for loading materials, the sealing and locking of the rear door needs to be ensured; when unloading, the locking is released, the back door is lifted, and the push shovel pushes out the unloading.
In the prior art, a carriage rear door lock of a kitchen garbage truck mainly adopts the following three modes. The first mode adopts a manual reversing valve to respectively operate and control the rear door oil cylinder and the locking oil cylinder, and the manual operation of the mode has low automation degree and is troublesome to operate. The second type adopts an electromagnetic directional valve and a proximity switch to perform time-delay action control, a back door is closed, the proximity switch is induced, a locking oil cylinder performs time-delay locking action, locking is opened, the proximity switch is induced, and the back door oil cylinder performs time-delay opening action. The other method adopts double sequence valve control, the back door is closed and then is pressurized, and the sequence valve acts and then locks the oil cylinder to perform locking action; after the door lock is locked and opened, the pressure is held, and after the sequence valve acts, the rear door oil cylinder performs opening action, however, the door lock double sequence valve with the structure has the advantages of complex structure, higher cost and no contribution to wide popularization.
In order to overcome the above-mentioned defect that prior art exists, need for a carriage hydraulic pressure lock of vehicle in this field urgently for the carriage back door of vehicle can only realize opening of back door through simple operation and close and locking, and the action of opening and shutting the door is steady, and safe and reliable after the locking, pipeline layout is simple simultaneously, and the cost is controllable also is convenient for maintain.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In order to overcome the above-mentioned defects of the prior art, the present invention provides a hydraulic door lock for a vehicle compartment, comprising: the first push rod does piston motion in the rear door oil cylinder so as to divide the interior of the rear door oil cylinder into a first rod cavity and a first rodless cavity; the electromagnetic directional valve is connected with a first oil line pipeline and a second oil line pipeline, the first oil line pipeline is connected with a first rodless cavity of the rear door oil cylinder, and the second oil line pipeline is connected with a first rod cavity of the rear door oil cylinder; the locking oil cylinders are provided with a second sliding push rod, the top of the second push rod extends out of the locking oil cylinders to form a locking bolt, the second push rod does piston motion in the locking oil cylinders to divide the inside of the locking oil cylinders into a second rod cavity and a second rodless cavity, the second rod cavity is communicated with a second oil pipeline through a third oil pipeline, the second rodless cavity is communicated with a first oil pipeline through a fourth oil pipeline, and a sequence valve is arranged on the fourth oil pipeline to control the action sequence of the rear door bolt and the locking bolt through setting pipeline pressure.
In one embodiment, preferably, a balance valve is provided on an intermediate pipe connecting the rear door cylinder and the first and second oil lines to stabilize the movement of the first push rod.
In one embodiment, the opening pressure of the balance valve is preferably set to be lower than the preset pressure of the sequence valve, so that the first push rod moves first and the second push rod moves later when the door closing motion is performed.
In one embodiment, preferably, the electromagnetic directional valve is a Y-shaped three-position four-way directional valve, and the electromagnetic directional valve is further connected with an oil pump and an oil tank to output high-pressure oil and return oil of a receiving pipeline for a hydraulic door lock of a carriage respectively.
In one embodiment, preferably, the electromagnetic directional valve operates at a first operating position when the door is closed, the oil pump is communicated with the first oil line to output high-pressure oil to the first oil line in the first operating position, and the oil tank is communicated with the second oil line to receive return oil of the second oil line in the first operating position.
In one embodiment, preferably, the electromagnetic directional valve operates in the second operating position when the door is opened, the oil pump is communicated with the second oil line to output high-pressure oil to the second oil line in the second operating position, and the oil tank is communicated with the first oil line to receive return oil of the first oil line.
In one embodiment, preferably, the electromagnetic directional valve is located at a third working position after completing the door opening or closing action, and the oil tank is communicated with the first oil line and the second oil line in the third working position to receive return oil of the first oil line and the second oil line.
In an embodiment, preferably, the third oil line is provided with a check valve, the fourth oil line is provided with a check valve on the side of the sequence valve connected with the second rodless cavity, and the two check valves are in linkage control.
In one embodiment, the solenoid directional valve, the sequence valve and the check valve are preferably integrated in one valve block.
Another aspect of the invention provides a vehicle comprising any of the cabin hydraulic door locks described above.
Drawings
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
Fig. 1 is a schematic structural diagram of a hydraulic door lock device for a compartment of a vehicle according to an embodiment of the present invention.
For clarity, a brief description of the reference numerals is given below:
1 electromagnetic directional valve
2 sequence valve
3 hydraulic lock
4 locking oil cylinder
5 balance valve
6 back door oil cylinder
7 first oil way pipeline
8 second oil line
9 third oil line
10 fourth oil line
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in connection with the preferred embodiments, there is no intent to limit its features to those embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Additionally, the terms "upper," "lower," "left," "right," "top," "bottom," "horizontal," "vertical" and the like as used in the following description are to be understood as referring to the segment and the associated drawings in the illustrated orientation. The relative terms are used for convenience of description only and do not imply that the described apparatus should be constructed or operated in a particular orientation and therefore should not be construed as limiting the invention.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, regions, layers and/or sections, these elements, regions, layers and/or sections should not be limited by these terms, but rather are used to distinguish one element, region, layer and/or section from another element, region, layer and/or section. Thus, a first component, region, layer or section discussed below could be termed a second component, region, layer or section without departing from some embodiments of the present invention.
In order to overcome the defects in the prior art, the invention provides the carriage hydraulic door lock for the vehicle, which is used for the carriage back door of the vehicle, can realize the opening, closing and locking of the back door only through simple operation, has stable door opening and closing action, is safe and reliable after locking, has simple pipeline layout and controllable cost, and is convenient to maintain.
Fig. 1 is a schematic structural diagram of a hydraulic door lock device for a compartment of a vehicle according to an embodiment of the present invention.
Referring to fig. 1, the hydraulic door lock for a car provided by the present invention includes: the rear door oil cylinder 6 is internally provided with a first sliding push rod, the top of the first push rod extends out of the rear door oil cylinder 6 to form a rear door bolt, and the first push rod performs piston motion in the rear door oil cylinder 6 to divide the interior of the rear door oil cylinder into a first rod cavity and a first rodless cavity; the hydraulic control system comprises an electromagnetic directional valve 1, wherein the electromagnetic directional valve is connected with a first oil line pipeline 7 and a second oil line pipeline 8, the first oil line pipeline 7 is connected with a first rodless cavity of a rear door oil cylinder 6, and the second oil line pipeline 8 is connected with a first rod cavity of the rear door oil cylinder 6; and at least one locking oil cylinder 4, the number of the locking oil cylinders 4 is matched with that of the backdoor oil cylinders 6, a slidable second push rod is arranged in the locking oil cylinder 4, the top of the second push rod extends out of the locking oil cylinder 4 to form a locking bolt, the second push rod does piston motion in the locking oil cylinder 4 to divide the inside of the locking oil cylinder 4 into a second rod cavity and a second rodless cavity, the second rod cavity is communicated with a second oil pipeline 8 through a third oil pipeline 9, the second rodless cavity is communicated with a first oil pipeline 7 through a fourth oil pipeline 10, and a sequence valve 2 is arranged on the fourth oil pipeline 10 to control the action sequence of the backdoor bolt and the locking bolt through setting pipeline pressure.
In the embodiment shown in fig. 1, there are two back door cylinders 6 and two lock cylinders 4, respectively, and it will be understood by those skilled in the art that one back door cylinder 4 and one lock cylinder 4 constitute a group for controlling the door lock of a door. The number of the rear door cylinders 6 and the locking cylinders 4 is only illustrated for example, and is not used for limiting the protection scope of the invention, and the rear carriages of vehicles with different types can be changed correspondingly according to actual requirements.
In one embodiment, a balance valve 5 is arranged on an intermediate pipeline connecting the rear door oil cylinder 6 with the first oil pipeline 7 and the second oil pipeline 8 so as to enable the first push rod to move stably.
As shown in fig. 1, the balancing valve 5 can ensure the balance of the motion of the rear door during the closing process of the rear door due to the large mass of the rear door. The balance valve 5 is directly installed on the rear door oil cylinder 6, and each rear door oil cylinder 6 is provided with the corresponding balance valve 5, so that the rear door oil cylinder is locked when system decompression or pipeline failure occurs in the rear door action process, the rear door is prevented from falling, and the safety is ensured.
In one embodiment, the opening pressure of the equalizing valve 5 is set to be smaller than the preset pressure of the sequence valve 2, so that the first push rod moves first and the second push rod moves later during the door closing action.
Referring to fig. 1, in the door closing operation, high-pressure oil is output into the first oil line 7 through the electromagnetic directional valve 1, and when the opening pressure of the balanced valve 5 is set to be smaller than the preset pressure of the sequence valve 2, the high-pressure oil will continue to advance along the first oil line 7 through the junction between the first oil line 7 and the fourth oil line 10, so as to push the first push rod of the following oil cylinder 6 to move first. When the first push rod of the rear oil cylinder 6 moves to the bottom, namely the rear door bolt completes the door closing action, the high-pressure oil pushes the second push rod of the locking oil cylinder 4 to move along the fourth oil pipeline 10, and the locking action of the locking bolt is completed. The invention skillfully controls the action sequence of the push rod of the oil cylinder through the setting of the valve pressure, and finishes the step sequence that the push rod of the rear door oil cylinder 5 acts first and the push rod of the locking oil cylinder 4 acts later when the door is closed.
In one embodiment, the electromagnetic directional valve 1 is a Y-shaped three-position four-way directional valve, and is further connected with an oil pump and an oil tank to output high-pressure oil and return oil of a containing pipeline for a carriage hydraulic door lock respectively.
In an embodiment, the electromagnetic directional valve 1 operates at a first operating position when the door is closed, the oil pump is communicated with the first oil line to output high-pressure oil to the first oil line in the first operating position, and the oil tank is communicated with the second oil line to receive return oil of the second oil line in the first operating position.
In one embodiment, the electromagnetic directional valve 1 operates at the second operating position when the door is opened, the oil pump is communicated with the second oil line to output high-pressure oil to the second oil line in the second operating position, and the oil tank is communicated with the first oil line to receive return oil of the first oil line.
In an embodiment, the electromagnetic directional valve 1 is located at a third working position after completing the door opening or closing action, and in the third working position, the oil tank is communicated with the first oil line and the second oil line to receive return oil of the first oil line and the second oil line.
In the embodiment shown in fig. 1, the first operating position of the electromagnetic directional valve 1 is located on the left side of the directional valve, and high-pressure oil is output to the first oil line 7 and returned oil returned 8 from the second oil line is received to the oil tank. The second working position is positioned at the right side of the reversing valve, and high-pressure oil is output to the second oil way pipeline 8 at the moment, and return oil returned by the first oil way pipeline 7 is received to the oil tank. The third working position is located at the middle position of the reversing valve, and at the moment, the first oil way pipeline 7 and the second oil way pipeline 8 both convey return oil to the oil tank and do not output high-pressure oil to the hydraulic lock.
In one embodiment, the third oil line 9 is provided with a check valve 3, the fourth oil line 10 is also provided with a check valve 3 at one side of the sequence valve 2 connected with the second rodless cavity, and the two check valves 3 are controlled in a linkage mode.
As shown in fig. 1, the check valve 3 acts on the rod cavity and the rodless cavity of the locking cylinder 4, so that after the locking cylinder 4 locks the rear door, the check valve 3 can lock the cylinder state to prevent the rear door from being opened accidentally due to system failure.
In one embodiment, the solenoid directional valve 1, the sequence valve 2 and the check valve 3 are integrated into one valve block.
As shown by a dotted line frame in FIG. 1, the electromagnetic directional valve 1, the sequence valve 2 and the one-way valve 3 are integrated on one valve block, so that the hydraulic lock has a compact structure and attractive pipelines.
The working principle of the hydraulic door lock provided by the invention is detailed in the process of opening and closing the carriage door.
Referring to fig. 1, when the door is closed, the left electromagnet of the electromagnetic directional valve 1 is energized, so that the electromagnetic directional valve 1 operates at the first operating position, and the high-pressure oil output by the oil pump flows through the first oil line 7, one way of the rear door cylinder 6, and the other way of the high-pressure oil flows to the sequence valve 2. The opening pressure of the setting balance valve 5 is smaller than the set pressure of the sequence valve 2, so that the oil path flowing to the back door cylinder 6 is actuated first, and the oil path flowing through the sequence valve 2 passes through the lock cylinder 4 to be actuated.
High-pressure oil passes through a first oil pipeline 7, reaches a rodless cavity of a rear door oil cylinder 6 all the way, pushes the oil cylinder to extend, and controls a balance valve 5 to be opened upwards at the same time, so that the extending action of a first push rod is stable. The oil liquid in the rod cavity of the rear door oil cylinder 6 flows through the second oil way pipeline 8 after passing through the balance valve 5, and flows back to the oil tank through the electromagnetic directional valve 1.
When the first push rod of the rear door oil cylinder 6 extends to the right, namely the rear door is closed to the right, high-pressure oil is continuously output to the first oil way pipeline 7, the pressure of the pipeline rises, so that the high-pressure oil flows to the fourth oil way pipeline 10, when the pressure in the fourth oil way pipeline 10 reaches the set pressure of the sequence valve 2, the sequence valve is opened, the high-pressure oil reaches the one-way valve 3, the oil passes through the right one-way valve and opens the left one-way valve, enters the rodless cavity of the locking oil cylinder 4 and pushes the oil cylinder to extend to be locked. At the moment, oil in a rod cavity of the locking oil cylinder 4 flows through the one-way valve on the left side of the liquid one-way valve 3, flows through the electromagnetic directional valve 1 and flows back to the oil tank.
After the locking oil cylinder 4 extends to the right position, the locking action is completed, the left electromagnet of the electromagnetic directional valve 1 is powered off, and the whole rear door closing sequence action is completed.
When the door is opened, referring to fig. 1, the right electromagnet of the electromagnetic directional valve 1 is energized, the electromagnetic directional valve 1 operates at the second operating position, and the high-pressure oil output by the oil pump flows through the second oil line, one way of the high-pressure oil flows to the rear door oil cylinder 6, and the other way of the high-pressure oil flows to the one-way valve 3 on the left side. At this time, the load of the lock cylinder 4 is small and the load of the back door cylinder 6 is heavy, so that the oil path flowing through the check valve 3 to the lock cylinder 4 operates first and the oil path flowing through the back door cylinder 6 operates later.
High-pressure oil reaches the check valve 3 on the left side after passing through a connection point of the second oil pipeline 8 and the third oil pipeline 9, the oil passes through the check valve on the left side, opens the check valve on the right side at the same time, enters a rod cavity of the locking oil cylinder 4, and pushes a second push rod of the locking oil cylinder 4 to retract so as to complete unlocking; the oil in the rodless cavity of the locking oil cylinder 4 passes through the check valve on the right side of the check valve 3, then passes through the sequence valve 2, then passes through the fourth oil line 10 to the first oil line 1, and finally flows back to the oil tank through the electromagnetic directional valve 1.
When the second push rod of the locking oil cylinder 4 retracts to the right position, the oil pump continues to feed oil, the pressure of the pipeline rises, after the opening pressure of the back door oil cylinder 6 is reached, high-pressure oil passes through the second oil pipeline 8 and the balance valve 5 to reach the rod cavity of the back door oil cylinder 6, and the first push rod of the back door oil cylinder 6 is pushed to retract to realize the door opening action; oil in the rodless cavity of the rear door oil cylinder 6 flows back to the oil tank from the electromagnetic directional valve 1 through the first oil line 7.
After the rear door oil cylinder 6 retracts to the right, the door opening action is finished, and the right electromagnet of the electromagnetic directional valve 1 is powered off, so that the whole rear door opening sequence action is finished.
After the left electromagnet and the right electromagnet of the electromagnetic directional valve 1 are all powered off, the electromagnetic directional valve 1 returns to the middle position, namely the third working position, oil in the first oil line pipeline 7 and the second oil line pipeline 8 flows back to the oil tank, the one-way valve 3 and the balance valve 5 are both closed, and the locking oil cylinder 4 and the rear door oil cylinder 6 are respectively locked, so that the rear door is ensured to be locked tightly and reliably.
Another aspect of the invention provides a vehicle comprising any of the cabin hydraulic door locks described above.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hydraulic car door lock for a vehicle, comprising:
the rear door oil cylinder is internally provided with a first sliding push rod, the top of the first push rod extends out of the rear door oil cylinder to form a rear door bolt, and the first push rod performs piston motion in the rear door oil cylinder to divide the interior of the rear door oil cylinder into a first rod cavity and a first rodless cavity;
the electromagnetic directional valve is connected with a first oil line pipeline and a second oil line pipeline, the first oil line pipeline is connected with the first rodless cavity of the rear door oil cylinder, and the second oil line pipeline is connected with the first rod cavity of the rear door oil cylinder; and
the locking oil cylinder is internally provided with a slidable second push rod, the top of the second push rod extends out of the locking oil cylinder to form a locking bolt, the second push rod does piston motion in the locking oil cylinder to divide the inside of the locking oil cylinder into a second rod cavity and a second rodless cavity, the second rod cavity is communicated with the second oil pipeline through a third oil pipeline, the second rodless cavity is communicated with the first oil pipeline through a fourth oil pipeline, and the fourth oil pipeline is provided with a sequence valve to control the action sequence of the rear door bolt and the locking bolt through setting pipeline pressure.
2. A hydraulic door lock for a vehicle compartment as claimed in claim 1, wherein a balance valve is provided on an intermediate line connecting the rear door cylinder with the first oil line and the second oil line to smooth the movement of the first push rod.
3. A hydraulic door lock for a vehicle cabin according to claim 2, wherein the opening pressure of said counterbalance valve is set to be smaller than the preset pressure of said sequence valve, so that said first push rod moves first and said second push rod moves later when the door closing action is performed.
4. A hydraulic door lock for a carriage as claimed in claim 1, wherein the electromagnetic directional valve is a Y-shaped three-position four-way directional valve, and an oil pump and an oil tank are further connected to output high-pressure oil and return oil of a receiving pipeline for the hydraulic door lock for the carriage respectively.
5. A hydraulic door lock for a carriage as claimed in claim 4, wherein said electromagnetic directional valve is operated at a first operation position when the door is closed, said oil pump is communicated with said first oil line to output high pressure oil to said first oil line in said first operation position, and said oil tank is communicated with said second oil line to receive return oil from said second oil line.
6. A hydraulic door lock for a carriage as claimed in claim 4, wherein said electromagnetic directional valve is operated at a second operation position when the door is opened, said oil pump is communicated with said second oil line to output high pressure oil to said second oil line, and said oil tank is communicated with said first oil line to receive return oil from said first oil line.
7. A hydraulic door latch for a vehicle cabin according to claim 4 wherein said solenoid operated directional valve is disposed in a third operative position after completion of a door opening or closing event, and wherein said oil tank is in communication with said first and second oil lines for receiving return oil from said first and second oil lines in said third operative position.
8. A hydraulic door lock for a carriage as claimed in claim 1, wherein a check valve is provided on the third oil line, a check valve is also provided on the fourth oil line on the side of the sequence valve connected to the second rodless chamber, and two check valves are controlled in a linkage manner.
9. A hydraulic car door lock according to claim 8, wherein said solenoid directional valve, said sequence valve and said check valve are integrated into a single valve block.
10. A vehicle comprising a hydraulic door lock for a cabin as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122231832.2U CN216271245U (en) | 2021-09-15 | 2021-09-15 | Carriage hydraulic door lock of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122231832.2U CN216271245U (en) | 2021-09-15 | 2021-09-15 | Carriage hydraulic door lock of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216271245U true CN216271245U (en) | 2022-04-12 |
Family
ID=81064660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122231832.2U Active CN216271245U (en) | 2021-09-15 | 2021-09-15 | Carriage hydraulic door lock of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216271245U (en) |
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2021
- 2021-09-15 CN CN202122231832.2U patent/CN216271245U/en active Active
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