CN217107626U - Hydraulic cylinder, hydraulic system and working machine - Google Patents
Hydraulic cylinder, hydraulic system and working machine Download PDFInfo
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- CN217107626U CN217107626U CN202220650129.7U CN202220650129U CN217107626U CN 217107626 U CN217107626 U CN 217107626U CN 202220650129 U CN202220650129 U CN 202220650129U CN 217107626 U CN217107626 U CN 217107626U
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Abstract
The utility model relates to an engineering machine tool field provides a pneumatic cylinder, hydraulic system and operation machinery, and the pneumatic cylinder includes the pneumatic cylinder main part, and the both ends of pneumatic cylinder main part are used for with hydraulic pressure oil pipe way intercommunication, and two oil discharge devices set up respectively in the position that the pneumatic cylinder main part is close to both ends, and oil discharge device all is used for the intercommunication between pneumatic cylinder main part and hydraulic pressure oil pipe way, and oil discharge device is by the pneumatic cylinder main part to hydraulic pressure oil pipe way direction one-way conduction. In the use process, when the piston in the hydraulic cylinder main body moves to one end close to the hydraulic cylinder main body, the oil unloading device close to the end is communicated with the oil inlet cavity, and the oil unloading device is communicated with the oil inlet cavity and the oil outlet pipe of the hydraulic oil pipeline. So, can make the oil reflux of oil feed chamber go back to an oil pipe, make the piston slowly be close to the tip of pneumatic cylinder main part, when this pneumatic cylinder was used on the motion such as compression mechanism, can make whole motion have fine uninstallation and shock-absorbing capacity, reduce hydraulic shock and mechanical collision, reduce the noise of system.
Description
Technical Field
The utility model relates to an engineering machine tool technical field especially relates to a pneumatic cylinder, hydraulic system and operation machinery.
Background
With the development of national urban and rural integration, the compression garbage truck is widely accepted by the market due to the advantages of multi-working-condition use, no secondary pollution, high compression efficiency and the like, and becomes a main vehicle model in the garbage collection and transportation industry. In recent years, the living standard of urban residents is improved, the requirements of people on municipal vehicles are higher and higher, the collection of household garbage is generally concentrated in the early morning or the early morning, most residents are still in a sleep stage in the period, and the compression type compression vehicle has higher working noise, so that the rest of the residents is influenced, and dissatisfaction is caused.
The loading operation of the compression type garbage truck needs an engine or a motor to provide power, a hydraulic system is driven to control, garbage is collected into a filler through an oil cylinder driving barrel turning device, and then the garbage is compressed and filled through an oil cylinder driving compression mechanism and enters a special garbage box body. The compressing mechanism mainly comprises a sliding plate, a scraping plate and a hydraulic oil cylinder for driving the sliding plate, the scraping plate and the hydraulic oil cylinder to move, and the garbage compressing sequence comprises the steps of opening the scraping plate, descending the sliding plate, closing the scraping plate and ascending the sliding plate.
The noise generated when the compression mechanism operates is mainly mechanical collision or hydraulic impact generated when the scraper is opened/closed and the sliding plate goes up/down in place, and the main solution in the prior art is to use an electromagnetic induction switch to induce in advance or use a valve bank to control proportional flow.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pneumatic cylinder, hydraulic system and operation machinery for solve and use the electromagnetic induction switch among the prior art or use the valves to carry out proportional flow control and reduce mechanical collision or hydraulic shock and then noise reduction, lead to defect with high costs, that the fault rate is high, realize saving the cost when making an uproar, simplify the effect of structure.
The utility model provides a hydraulic cylinder, include: the hydraulic cylinder comprises a hydraulic cylinder main body, wherein two ends of the hydraulic cylinder main body are communicated with a hydraulic oil pipeline; the two oil discharging devices are respectively arranged at the positions, close to the two end parts, of the hydraulic cylinder main body, are used for communicating the hydraulic cylinder main body with the hydraulic oil pipeline, and are communicated in a one-way mode from the hydraulic cylinder main body to the hydraulic oil pipeline; when the piston of the hydraulic cylinder body moves to a position close to one end of the hydraulic cylinder body, the oil unloading device close to the end conducts the oil inlet cavity of the hydraulic cylinder body and the hydraulic oil pipeline.
According to the utility model provides a pair of hydraulic cylinder, the oil discharge device includes the check valve, the switching on direction of check valve by the pneumatic cylinder main part orientation hydraulic oil pipeline.
According to the utility model provides a pair of hydraulic cylinder, the oil discharge device is still including establishing ties the check valve is kept away from the choke valve of hydraulic cylinder main part one side.
According to the utility model provides a pair of hydraulic cylinder, be provided with first hydraulic fluid port and second hydraulic fluid port in the pneumatic cylinder main part, first hydraulic fluid port with the second hydraulic fluid port sets up respectively the both ends of pneumatic cylinder main part, the pneumatic cylinder main part passes through first hydraulic fluid port with the second hydraulic fluid port with hydraulic oil pipeline intercommunication.
According to the utility model provides a pair of hydraulic cylinder, it unloads the hydraulic fluid port to be provided with first hydraulic fluid port and second in the pneumatic cylinder main part, first hydraulic fluid port that unloads sets up first hydraulic fluid port is close to one side of second hydraulic fluid port, the second is unloaded the hydraulic fluid port setting and is in the second hydraulic fluid port is close to one side of first hydraulic fluid port, the oil discharging device passes through respectively first oil port that unloads with the second unload the hydraulic fluid port with hydraulic oil pipeline intercommunication.
According to the utility model provides a pair of hydraulic cylinder works as the piston motion is arrived to be close to the pneumatic cylinder main part is provided with during the one end of first hydraulic fluid port, first oil discharge port with second hydraulic fluid port intercommunication works as the piston motion is arrived to be close to the hydraulic cylinder main part is provided with during the one end of second hydraulic fluid port, the second oil discharge port with first hydraulic fluid port intercommunication.
The utility model also provides a hydraulic system, including oil supply unit and as above arbitrary the pneumatic cylinder, oil supply unit be used for to the pneumatic cylinder fuel feeding, and be used for receiving the oil return of pneumatic cylinder.
According to the utility model provides a pair of hydraulic system, oil supply unit includes the oil tank, advances oil pipe way, returns oil pipe way, first oil pipe, second oil pipe and switching-over valve, advance oil pipe way with it connects to return oil pipe way the oil tank with between the switching-over valve, first oil pipe with second oil pipe connects the switching-over valve with between the pneumatic cylinder main part, the switching-over valve is used for switching on advance oil pipe way with first oil pipe switches on simultaneously second oil pipe with return oil pipe, perhaps the switching-over valve is used for switching on advance oil pipe way with second oil pipe switches on simultaneously first oil pipe with return oil pipe.
According to the utility model provides a pair of hydraulic system still includes a plurality ofly the pneumatic cylinder main part, it is a plurality of pneumatic cylinder main part parallel connection, and at least one the pneumatic cylinder main part with be provided with between the hydraulic oil pipeline the oil discharge device.
The utility model also provides a working machine, include as above arbitrary hydraulic system.
The utility model provides a hydraulic cylinder, including the pneumatic cylinder main part, the both ends of pneumatic cylinder main part are used for with hydraulic pressure oil pipe way intercommunication, and two oil discharge devices set up respectively in the position that the pneumatic cylinder main part is close to both ends, and two oil discharge devices all are used for intercommunication pneumatic cylinder main part and hydraulic pressure oil pipe way, and the oil discharge device is by the pneumatic cylinder main part to hydraulic pressure oil pipe way direction one-way switching on. In the use, when the piston in the pneumatic cylinder main part needs to be moved to the second end by first end, the side that the pneumatic cylinder main part is close to first end is the oil feed chamber, and the side that is close to the second end is the oil cavity. The part of the hydraulic oil pipeline communicated with the oil inlet cavity is an oil inlet pipe and is used for supplying oil to the oil inlet cavity, and the part of the hydraulic oil pipeline communicated with the oil outlet cavity is an oil outlet pipe and is used for returning oil to the oil outlet cavity. And in the initial state, the two oil discharge devices are communicated with the oil outlet cavity. Because the oil discharge device is in one-way conduction from the hydraulic cylinder main body to the hydraulic oil pipeline, when oil is fed into the oil inlet pipe, hydraulic oil cannot be fed into the oil outlet cavity through the oil discharge device, and the normal work of the hydraulic cylinder main body can be ensured. After the piston moves through the oil discharging device close to the first end, the oil discharging device close to the first end is communicated with the oil inlet cavity, but the oil pressure of the oil inlet pipe is balanced with the oil pressure in the oil discharging device, so that the hydraulic cylinder main body can still normally work. After the piston continues to move through the oil discharging device close to the second end, the oil discharging device close to the second end is communicated with the oil inlet cavity, and the oil discharging device is communicated with the oil inlet cavity and the oil outlet pipe, so that the piston can be slowly close to the second end. When the hydraulic cylinder is applied to a moving mechanism such as a compression mechanism and the like, the whole moving mechanism has good unloading and buffering performances, the hydraulic impact and mechanism collision of a system are reduced, and the noise of the system is reduced. The utility model provides a pneumatic cylinder is through setting up pressure relief device, by the slow off-load of the motion control pneumatic cylinder of piston self, and then the effect of noise reduction has simplified the structure, the cost is reduced.
Further, the utility model provides a hydraulic system and operation machinery owing to all have as above the pneumatic cylinder, consequently, have the same beneficial effect with the aforesaid equally.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hydraulic system provided by the present invention;
FIG. 2 is a schematic structural diagram of a hydraulic cylinder provided by the present invention;
fig. 3 is a schematic structural view of the reversing valve provided by the present invention;
reference numerals:
100: a hydraulic cylinder main body; 101: a first oil port; 102: a second oil port; 103: a first oil discharge port; 104: a second oil discharge port; 201: a first oil pipe; 202: a second oil pipe; 203: an oil tank; 204: an oil inlet pipeline; 205: an oil return line; 206: a reversing valve; 2061: a port P; 2062: a T port; 2063: a port A; 2064: a port B; 301: a first check valve; 302: a first throttle valve; 401: a second one-way valve; 402: a second throttle valve.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The hydraulic cylinder, hydraulic system, and work machine of the present invention will be described with reference to fig. 1 to 3.
The utility model provides a hydraulic cylinder, including pneumatic cylinder main part 100 and two oil discharge devices.
The hydraulic cylinder body 100 is provided with a first oil port 101 and a second oil port 102, the first oil port 101 and the second oil port 102 are respectively arranged at two ends of the outer side of the hydraulic cylinder body 100, for example, the first oil port 101 is communicated with a rod cavity of the hydraulic cylinder body 100, the second oil port 102 is communicated with a rodless cavity of the hydraulic cylinder body 100, and both the first oil port 101 and the second oil port 102 are communicated with a hydraulic oil pipeline.
When the piston rod of the hydraulic cylinder body 100 extends out, the hydraulic oil pipeline supplies oil to the rodless cavity through the second oil port 102, and hydraulic oil in the rod cavity flows back to the hydraulic oil pipeline through the first oil port 101. When the piston rod of the hydraulic cylinder body 100 is retracted, the hydraulic oil pipeline supplies oil to the rod cavity through the first oil port 101, and hydraulic oil in the rodless cavity flows back to the hydraulic oil pipeline through the second oil port 102.
The two oil discharge devices are respectively arranged at the positions, close to the two end parts, of the hydraulic cylinder main body 100, are both used for being communicated between the hydraulic cylinder main body 100 and the hydraulic oil pipeline, and are communicated in a one-way mode from the hydraulic cylinder main body 100 to the hydraulic oil pipeline.
The oil discharge device near the end where the first port 101 is provided may be referred to as a first oil discharge device, and the oil discharge device near the end where the second port 102 is provided may be referred to as a second oil discharge device. The hydraulic cylinder body 100 is provided with a first oil discharge port 103 and a second oil discharge port 104, the first oil discharge port 103 is arranged on one side of the first oil discharge port 101 close to the second oil discharge port 102, and the second oil discharge port 104 is arranged on one side of the second oil discharge port 102 close to the first oil discharge port 101. The hydraulic oil line connected to the first port 101 may be referred to as a first oil line 201, and the hydraulic oil line connected to the second port 102 may be referred to as a second oil line 202. The first oil discharge device is connected between the first oil discharge port 103 and the first oil pipe 201. The second oil discharge device is connected between the second oil discharge port 104 and the second oil pipe 202.
Hereinafter, the working principle of the hydraulic cylinder according to the present invention will be described with respect to the case where the piston rod of the hydraulic cylinder body 100 is extended.
In this embodiment, in an initial state, one side of the piston of the hydraulic cylinder body 100, which is close to the rodless cavity, is in contact with one end of the hydraulic cylinder body 100, which is provided with the second oil port 102, at which time, the second oil pipe 202 is communicated with the rodless cavity through the second oil port 102, the first oil pipe 201 is communicated with the rod cavity through the first oil port 101, the first oil discharge device is communicated with the rod cavity and the first oil pipe 201, and the second oil discharge device is communicated with the rod cavity and the second oil pipe 202.
When oil is supplied, the second oil pipe 202 supplies oil to the rodless cavity through the second oil port 102, the piston is pushed to extrude the space with the rod cavity, and hydraulic oil in the rod cavity enters the first oil pipe 201 through the first oil port 101 to return oil. At the initial stage of oil supply, because the second oil discharge device is in one-way conduction from the hydraulic cylinder main body 100 to the hydraulic oil pipeline, when the second oil pipe 202 supplies oil to the rodless cavity through the second oil port 102, even if the second oil discharge device is communicated with the second oil pipe 202, hydraulic oil cannot enter the rod cavity through the second oil discharge device, and thus, the normal operation of the hydraulic cylinder main body 100 can be ensured.
After the oil is supplied for a period of time, the piston passes through the connecting position of the second oil discharging device and the hydraulic cylinder main body 100, at this time, the second oil discharging device is communicated with the rodless cavity, and as the second oil pipe 202 supplies oil to the rodless cavity at this time and forms dynamic balance with the oil pressure in the second oil discharging device, the hydraulic cylinder main body 100 can still work normally.
After oil supply is continued, the piston moves to one end close to the first oil port 101 of the hydraulic cylinder main body 100, the piston completely passes through the connecting position of the first oil discharging device and the hydraulic cylinder main body 100, at the moment, the rodless cavity is communicated with the first oil pipe 201 through the first oil discharging device, and the rodless cavity is unloaded through the first oil pipe 201 by the first oil discharging device, so that hydraulic impact can be reduced, and mechanical collision between moving mechanisms driven by the hydraulic cylinder can also be reduced.
The utility model provides an among the motion mechanisms such as compression mechanism that pneumatic cylinder can use the compression garbage truck, can be when motion mechanism is about to move in place, carry out slow off-load to the pneumatic cylinder, reduce hydraulic shock and mechanical collision, make the motion mechanism have good shock-absorbing capacity, and then reduce the noise of operation.
In an embodiment of the present invention, the oil discharging device may include a check valve. Specifically, the first oil discharge device includes a first check valve 301, and the first check valve 301 is communicated in one direction from the cylinder body 100 to the first oil pipe 201. The second oil discharge device comprises a second one-way valve 401, and the second one-way valve 401 is communicated in one way from the hydraulic cylinder body 100 to the direction of the second oil pipe 202.
Further, the oil discharge device can also comprise a throttle valve. Specifically, the first oil discharge device includes a first throttle valve 302, and the first throttle valve 302 is connected in series to the first check valve 301 on the side away from the cylinder body 100. The second oil discharge device includes a second throttle valve 402, and the second throttle valve 402 is connected in series on the side of the second check valve 401 away from the cylinder main body 100.
The utility model also provides a hydraulic system, this hydraulic system include oil supply unit and as above the pneumatic cylinder, oil supply unit passes through the hydraulic pressure oil pipe way and is connected with the pneumatic cylinder for to the pneumatic cylinder fuel feeding and receive the oil return of pneumatic cylinder. Since the hydraulic system has the hydraulic cylinder as described above, the same advantages as described above are also obtained.
In an embodiment of the present invention, the oil supply device includes an oil tank 203, an oil inlet pipe 204, an oil return pipe 205, a first oil pipe 201, a second oil pipe 202, and a reversing valve 206. The reversing valve 206 is provided with a P port 2061, a T port 2062, an A port 2063 and a B port 2064, one end of the oil inlet pipeline 204 is communicated with the P port 2061, and the other end is communicated with the oil tank 203; one end of the oil return pipeline 205 is communicated with the T port 2062, and the other end is communicated with the oil tank 203; one end of the first oil pipe 201 is communicated with the port a 2063, and the other end is communicated with the first oil port 101 of the hydraulic cylinder main body 100; one end of the second oil pipe 202 communicates with the B port 2064, and the other end communicates with the second port 102 of the cylinder main body 100.
When the piston rod of the cylinder body 100 needs to be extended, the switching valve 206 conducts the port P2061 and the port B2064, and simultaneously conducts the port a 2063 and the port T2062. The oil inlet pipe 204 supplies oil to the rodless cavity of the hydraulic cylinder main body 100 through the P port 2061, the B port 2064 and the second oil pipe 202, and hydraulic oil in the rod cavity returns through the first oil pipe 201, the a port 2063, the T port 2062 and the first oil pipe 201.
When the piston rod of the cylinder body 100 needs to be retracted, the directional control valve 206 conducts the P port 2061 and the a port 2063, and simultaneously conducts the B port 2064 and the T port 2062. The oil inlet pipe 204 supplies oil to the rod cavity of the hydraulic cylinder main body 100 through the P port 2061, the a port 2063 and the first oil pipe 201, and hydraulic oil in the rodless cavity returns through the second oil pipe 202, the B port 2064, the T port 2062 and the second oil pipe 202.
The utility model discloses an in an embodiment, hydraulic system can also include a plurality of pneumatic cylinder main parts 100, and a plurality of hydraulic cylinder main parts are parallelly connected, and the first hydraulic fluid port 101 of a plurality of pneumatic cylinder main parts 100 communicates promptly, and all communicates with first oil pipe 201, and a plurality of second hydraulic fluid ports 102 of a plurality of pneumatic cylinder main parts 100 communicate, and all communicate with second oil pipe 202. For example, when the first oil pipe 201 supplies oil, oil can be simultaneously supplied into the rod chambers through the first oil ports 101 of the plurality of cylinder main bodies 100.
When a plurality of hydraulic cylinder main bodies 100 are connected in parallel, at least one of the hydraulic cylinder main bodies 100 is provided with a first oil discharge device and a second oil discharge device, and because the plurality of hydraulic cylinder main bodies 100 are connected in parallel, the oil inlet chambers of the plurality of hydraulic cylinder main bodies 100 can be depressurized simultaneously only by arranging the first oil discharge device and the second oil discharge device on one hydraulic cylinder main body 100.
The utility model also provides an operation machinery, this operation machinery can be the compression garbage truck, and foretell hydraulic system can use on the compression mechanism of compression garbage truck. The compression mechanism is provided with a scraper oil cylinder for driving the scraper to open and close and a sliding plate oil cylinder for driving the sliding plate to slide. The scraper oil cylinder and the slide plate oil cylinder can be respectively provided with a set of the hydraulic system for driving, and a plurality of sets of the hydraulic systems are connected in parallel, but can share one oil tank 203 for supplying oil.
The utility model provides a working machine, owing to have as above-mentioned hydraulic system, also have the pneumatic cylinder as above equally, consequently, have equally with as above the same advantage.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A hydraulic cylinder, comprising:
the hydraulic cylinder comprises a hydraulic cylinder main body, wherein two ends of the hydraulic cylinder main body are communicated with a hydraulic oil pipeline;
the two oil discharging devices are respectively arranged at the positions, close to the two end parts, of the hydraulic cylinder main body, are used for communicating the hydraulic cylinder main body with the hydraulic oil pipeline, and are communicated in a one-way mode from the hydraulic cylinder main body to the hydraulic oil pipeline;
when the piston of the hydraulic cylinder body moves to a position close to one end of the hydraulic cylinder body, the oil unloading device close to the end conducts the oil inlet cavity of the hydraulic cylinder body and the hydraulic oil pipeline.
2. The hydraulic cylinder of claim 1, wherein the oil discharge device comprises a check valve, and a communication direction of the check valve is from the cylinder body toward the hydraulic oil line.
3. The hydraulic cylinder of claim 2, wherein the oil discharge device further comprises a throttle valve connected in series on a side of the check valve remote from the cylinder body.
4. The hydraulic cylinder according to any one of claims 1 to 3, wherein a first oil port and a second oil port are arranged on the hydraulic cylinder main body, the first oil port and the second oil port are respectively arranged at two ends of the hydraulic cylinder main body, and the hydraulic cylinder main body is communicated with the hydraulic oil pipeline through the first oil port and the second oil port.
5. The hydraulic cylinder according to claim 4, wherein a first oil discharge port and a second oil discharge port are arranged on the hydraulic cylinder main body, the first oil discharge port is arranged on one side of the first oil discharge port close to the second oil discharge port, the second oil discharge port is arranged on one side of the second oil discharge port close to the first oil discharge port, and the oil discharge device is communicated with the hydraulic oil pipeline through the first oil discharge port and the second oil discharge port respectively.
6. The hydraulic cylinder of claim 5, wherein the first oil discharge port communicates with the second oil port when the piston moves to be adjacent to an end of the cylinder body where the first oil port is provided, and the second oil discharge port communicates with the first oil port when the piston moves to be adjacent to an end of the cylinder body where the second oil port is provided.
7. A hydraulic system comprising a hydraulic cylinder according to any one of claims 1 to 6 and oil supply means for supplying oil to the hydraulic cylinder and for receiving return oil from the hydraulic cylinder.
8. The hydraulic system according to claim 7, wherein the oil supply device includes an oil tank, an oil inlet line, an oil return line, a first oil pipe, a second oil pipe, and a directional valve, the oil inlet line and the oil return line are connected between the oil tank and the directional valve, the first oil pipe and the second oil pipe are connected between the directional valve and the hydraulic cylinder main body, and the directional valve is configured to conduct the oil inlet line and the first oil pipe while conducting the second oil pipe and the oil return line, or the directional valve is configured to conduct the oil inlet line and the second oil pipe while conducting the first oil pipe and the oil return line.
9. The hydraulic system as claimed in claim 7 or 8, further comprising a plurality of the cylinder bodies connected in parallel, and the oil discharge device is provided between at least one of the cylinder bodies and the hydraulic oil line.
10. A working machine, characterized by comprising a hydraulic system according to any one of claims 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220650129.7U CN217107626U (en) | 2022-03-23 | 2022-03-23 | Hydraulic cylinder, hydraulic system and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220650129.7U CN217107626U (en) | 2022-03-23 | 2022-03-23 | Hydraulic cylinder, hydraulic system and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107626U true CN217107626U (en) | 2022-08-02 |
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ID=82603947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220650129.7U Active CN217107626U (en) | 2022-03-23 | 2022-03-23 | Hydraulic cylinder, hydraulic system and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217107626U (en) |
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2022
- 2022-03-23 CN CN202220650129.7U patent/CN217107626U/en active Active
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