CN112081795A - Oil cylinder of sanitation garbage truck - Google Patents
Oil cylinder of sanitation garbage truck Download PDFInfo
- Publication number
- CN112081795A CN112081795A CN202010960078.3A CN202010960078A CN112081795A CN 112081795 A CN112081795 A CN 112081795A CN 202010960078 A CN202010960078 A CN 202010960078A CN 112081795 A CN112081795 A CN 112081795A
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- piston
- clamping
- cylinder
- clamping jaw
- main piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a sanitation garbage truck oil cylinder which comprises a cylinder barrel, a rear cover and a front cover, wherein the rear cover and the front cover are fixedly connected to two ends of the cylinder barrel, the rear cover is arranged on an oil port A communicated with the inside of the cylinder barrel, the front cover is arranged on an oil port B communicated with the inside of the cylinder barrel, a main piston is connected in the cylinder barrel in a sliding mode, the main piston divides the inside of the cylinder barrel into a rear inner cavity communicated with the oil port A and a front inner cavity communicated with the oil port B, a piston rod extending out of the front cover is fixedly connected to one side, close to the front cover, of the main piston, and the sanitation garbage truck oil cylinder further comprises a locking mechanism used for locking the main piston. The invention has the advantages that: through setting up jack catch and the joint groove of mutually supporting, can lock the main piston when sanitation car driving, avoid causing the condition that the piston rod of pneumatic cylinder slowly stretches out because of the inevitable leakage of check valve or main piston, improve sanitation car's driving safety greatly.
Description
Technical Field
The invention relates to the field of sanitation garbage trucks, in particular to an oil cylinder of a sanitation garbage truck.
Background
Along with the acceleration of the national urbanization construction pace, the cleaning, greening and beautifying work of cities is very important, and the cleaning workload of urban road surface and street garbage is increased more and more. At present, in some large and medium-sized cities, sanitation garbage trucks are gradually adopted to replace the traditional manual cleaning. The sweeping arm on the sanitation truck is swung out and retracted by adopting an oil cylinder, and when in sweeping operation, a piston rod of the oil cylinder extends out, the sweeping arm is swung out, and a sweeping disc starts to work; when the vehicle is running, the piston rod of the oil cylinder drives the sweeping disc to be retracted and locked, so that the running safety is ensured. At present, the locking of the piston rod of the oil cylinder is realized by adopting a hydraulic control one-way valve on a hydraulic system, theoretically, as long as oil in a rod cavity of the oil cylinder is sealed by the hydraulic control one-way valve and is not discharged, the piston rod of the oil cylinder cannot automatically stretch out, but because the hydraulic control one-way valve and the oil cylinder piston inevitably have leakage, the piston rod of the oil cylinder can also slowly stretch out after a long time, and the driving safety is seriously influenced.
Disclosure of Invention
Therefore, the oil cylinder of the sanitation garbage truck which can be mechanically locked is needed to solve the problems.
The invention discloses a sanitation garbage truck oil cylinder, which comprises a cylinder barrel, a rear cover and a front cover, wherein the rear cover and the front cover are fixedly connected to two ends of the cylinder barrel, the rear cover is provided with an oil port A communicated with the inside of the cylinder barrel, the front cover is provided with an oil port B communicated with the inside of the cylinder barrel, a main piston is connected in the cylinder barrel in a sliding manner, the main piston divides the inside of the cylinder barrel into a rear inner cavity communicated with the oil port A and a front inner cavity communicated with the oil port B, one side of the main piston, which is close to the front cover, is fixedly connected with a piston rod extending out of the front cover, the sanitation garbage truck oil cylinder further comprises a locking mechanism used for locking the main piston, and the locking mechanism comprises: the mounting groove is formed in one side, close to the rear cover, of the main piston; the clamping jaw is rotatably connected to the inner wall of the mounting groove and comprises a first clamping jaw and a second clamping jaw, the left sides of the opposite surfaces of the first clamping jaw and the second clamping jaw are respectively provided with a first left guide inclined surface and a second left guide inclined surface, the middle parts of the opposite surfaces of the first clamping jaw and the second clamping jaw are respectively provided with a first clamping step and a second clamping step, the right sides of the opposite surfaces of the first clamping jaw and the second clamping jaw are respectively provided with a first right guide inclined surface and a second right guide inclined surface, and a first spring and a second spring are fixedly connected between the right sides of the opposite surfaces of the first clamping jaw and the second clamping jaw and the inner wall of the mounting groove; the connecting hole is formed in the inner end face of the rear cover and is communicated with the oil port A and the rear inner cavity, a clamping groove used for clamping the first clamping step and the second clamping step is formed in the inner wall of the connecting hole, when the main piston moves towards the rear cover, the first clamping step and the second clamping step can be driven to move, and then the first clamping step and the second clamping step are driven to enter the connecting hole, so that the main piston and the clamping groove are clamped with each other under the action of the first spring and the second spring; the installation cavity is seted up in the main piston, sliding connection has the unblock piston in the installation cavity, just the unblock piston will left chamber and right chamber are separated into to the installation cavity, the left side fixedly connected with of unblock piston penetrates the connecting rod of mounting groove, the connecting rod is located one end fixedly connected with unblock piece in the mounting groove, set up on the connecting rod with the mounting groove the first runner of right chamber intercommunication, set up on the main piston with the left chamber the second runner of preceding inner chamber intercommunication, left intracavity fixedly connected with cover be in the connecting rod outside and be used for with the unblock piston pushes to the locking spring in right chamber when the unblock piston moves left, can drive the unblock piece removes left and uses on first right direction inclined plane with on the second right direction inclined plane, make first jack catch, The left end of second jack catch is inside to be rotated to drive first joint step with second joint step breaks away from the joint groove makes master piston can move right.
In one embodiment, the first jaw and the second jaw are symmetrically disposed along a central axis of the cylinder.
In one embodiment, the right end face of the unlocking piston is provided with an annular oil groove.
In one embodiment, the inner wall of the left cavity is provided with a limiting step.
The technical scheme has the advantages that:
according to the invention, the claw and the clamping groove which are mutually matched are arranged, so that the main piston can be locked when the sanitation vehicle runs, the situation that the piston rod of the hydraulic cylinder slowly extends out due to inevitable leakage of the check valve or the main piston is avoided, and the running safety of the sanitation vehicle is greatly improved.
Drawings
FIG. 1 is a sectional view of an oil cylinder of a sanitation garbage truck according to the present invention;
FIG. 2 is a cross-sectional view of a sanitation truck cylinder in a locked state according to the present invention;
FIG. 3 is a sectional view of the piston of the cylinder of the sanitation garbage truck provided by the present invention starting to unlock;
FIG. 4 is a cross-sectional view of the piston of the present invention fully unlocked;
fig. 5 is a schematic view of a first jaw and a second jaw of the present invention.
In the figure, the rear cover 1, the connecting hole 1a, the clamping groove 1b, the cylinder barrel 2, the rear inner cavity 2a, the front inner cavity 2b, the front cover 3, the main piston 4, the piston rod 41, the mounting groove 42, the second flow channel 43, the right cavity 4a, the left cavity 4b, the limit step 4b1, the first claw 51, the first left guide inclined plane 511, the first right guide inclined plane 512, the first clamping step 513, the second claw 52, the second left guide inclined plane 521, the second right guide inclined plane 522, the second clamping step 523, the first spring 61, the second spring 62, the unlocking piston 7, the connecting rod 71, the first flow channel 711, the unlocking block 72, the annular oil groove 73 and the locking spring 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
The invention discloses a sanitation garbage truck oil cylinder, as shown in fig. 1, fig. 2, fig. 3 and fig. 5, the sanitation garbage truck oil cylinder comprises a cylinder barrel 2, a rear cover 1 and a front cover 3 which are fixedly connected with two ends of the cylinder barrel 2, wherein the rear cover 1 is provided with an oil port A communicated with the inside of the cylinder barrel 2, the front cover 3 is provided with an oil port B communicated with the inside of the cylinder barrel 2, the cylinder barrel 2 is internally and slidably connected with a main piston 4, the main piston 4 divides the inside of the cylinder barrel 2 into a rear inner cavity 2a communicated with the oil port A and a front inner cavity 2B communicated with the oil port B, one side of the main piston 4 close to the front cover 3 is fixedly connected with a piston rod 41 extending out of the front cover 3, the sanitation garbage truck oil cylinder further comprises a locking mechanism for locking the main piston, and the locking mechanism comprises: the mounting groove 42 is formed in one side, close to the rear cover 1, of the main piston 4; the clamping jaws are rotatably connected to the inner wall of the mounting groove 42 and comprise a first clamping jaw 51 and a second clamping jaw 52, the left sides of the opposite surfaces of the first clamping jaw 51 and the second clamping jaw 52 are respectively provided with a first left guide inclined surface 511 and a second left guide inclined surface 521, the middle parts of the opposite surfaces of the first clamping jaw 51 and the second clamping jaw 52 are respectively provided with a first clamping step 513 and a second clamping step 523, the right sides of the opposite surfaces of the first clamping jaw 51 and the second clamping jaw 52 are respectively provided with a first right guide inclined surface 512 and a second right guide inclined surface 522, and a first spring 61 and a second spring 62 are fixedly connected between the right sides of the opposite surfaces of the first clamping jaw 51 and the second clamping jaw 52 and the inner wall of the mounting groove 42; the connecting hole 1a is formed in the inner end face of the rear cover 1 and communicates with the oil port a and the rear inner cavity 2a, a clamping groove 1b used for clamping the first clamping step 513 and the second clamping step 523 is formed in the inner wall of the connecting hole 1a, and when the main piston 4 moves towards the rear cover 1, the first clamping step 513 and the second clamping step 523 can be driven to move so as to enter the connecting hole 1a, and therefore the connecting hole 1a and the clamping groove 1b are clamped with each other under the action of the first spring 61 and the second spring 62; the mounting cavity is arranged in the main piston 4, an unlocking piston 7 is connected in the mounting cavity in a sliding manner, the mounting cavity is divided into a left cavity 4b and a right cavity 4a by the unlocking piston 7, the left side of the unlocking piston 7 is fixedly connected with a connecting rod 71 penetrating into the mounting groove 42, one end of the connecting rod 71 positioned in the mounting groove 42 is fixedly connected with an unlocking block 72, a first flow passage 711 communicated with the mounting groove 42 and the right cavity 4a is formed in the connecting rod 71, a second flow passage 43 communicated with the left cavity 4b and the front inner cavity 2b is formed in the main piston 4, a locking spring 8 sleeved outside the connecting rod 71 and used for pushing the unlocking piston 7 to the right cavity 4a is fixedly connected in the left cavity 4b, when the unlocking piston 7 moves leftwards, the unlocking block 72 can be driven to move leftwards and act on the first right guide inclined plane 512 and the second right guide inclined plane 522, so that the left ends of the first and second jaws 51 and 52 rotate inwards, and the first and second clamping steps 513 and 523 are driven to separate from the clamping groove 1b, so that the main piston 4 can move rightwards.
Preferably, as shown in fig. 1, the first jaw 51 and the second jaw 52 are symmetrically disposed along a central axis of the cylinder tube 2.
Preferably, as shown in fig. 4, the right end surface of the unlocking piston 7 is provided with an annular oil groove 73.
It is worth mentioning that, as shown in fig. 4, the annular oil groove 73 is used to facilitate the oil entering the right chamber 4a and generating the force on the right end surface of the unlocking piston 7.
Preferably, as shown in fig. 2, the inner wall of the left cavity 4b is provided with a limit step 4b 1.
It should be noted that, as shown in fig. 1, 2, and 3, when the unlocking piston 7 moves leftward and contacts with the limit step 4b1, the acting force of the unlocking block 72 on the first claw 51 and the second claw 52 is the largest, so as to drive the left ends of the first claw 51 and the second claw 52 to rotate inward, and make the inner left end points of the first claw 51 and the second claw 52 contact with each other, and at this time, the distance between the first catch step 513 and the second catch step 523 is the smallest.
The working mode of the invention is as follows:
the locking principle is as follows: as shown in fig. 1, when the oil port B is filled with oil and the oil port a is returned with oil, the oil in the oil port B enters the left chamber 4B through the second flow passage 42, the oil in the oil port a enters the right chamber 4a through the first flow passage 711, under the action of the acting force of the locking spring 8 and the pressure difference between the left chamber 4B and the right chamber 4a, the unlocking piston 7 is in the right end position and does not contact with the first jaw 51 and the second jaw 52, at this time, when the main piston 4 moves to the position shown in fig. 1, the first left guide inclined surface 511 on the first jaw 51 and the second left guide inclined surface 521 on the second jaw 52 contact with the inner edge of the end surface of the connecting hole 1a, so that the left ends of the first jaw 51 and the second jaw 52 rotate inwards, when the main piston 4 continues to move leftwards to the position shown in fig. 2, under the acting forces of the first spring 61 and the second spring 62, the first claw 51 and the second claw 52 rotate outwards and are clamped into the clamping groove 1b to realize locking; after locking, the oil port a and the oil port B are decompressed, and the unlocking piston 7 is continuously kept at the right end position under the action of the locking spring 8, so that the first jaw 51 and the second jaw 52 are not rotated.
Unlocking principle: when the piston rod 41 needs to extend out, the oil inlet of the oil port a and the oil outlet B return oil, the oil of the oil port a enters the right cavity 4a through the first flow passage 711, the unlocking piston 7 is pushed to move leftwards, the unlocking block 72 acts on the first right guide inclined plane 512 and the second right guide inclined plane 522, the left ends of the first clamping jaw 51 and the second clamping jaw 52 rotate inwards to be separated from the clamping groove 1B, and the main piston 4 moves rightwards at the moment to realize unlocking.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. The utility model provides a sanitation garbage truck hydro-cylinder, its characterized in that, including cylinder and fixed connection in the back lid and the protecgulum at cylinder both ends, back lid open be equipped with the hydraulic fluid port A of the inside intercommunication of cylinder, the protecgulum open be equipped with the hydraulic fluid port B of the inside intercommunication of cylinder, sliding connection has the master piston in the cylinder, just the master piston will the cylinder is inside separate into with the back inner chamber of hydraulic fluid port A intercommunication and with the preceding inner chamber of hydraulic fluid port B intercommunication, the master piston is close to one side fixedly connected with of protecgulum stretches out the piston rod of protecgulum, sanitation garbage truck hydro-cylinder still including being used for locking the locking mechanism of master piston, locking mechanism includes:
the mounting groove is formed in one side, close to the rear cover, of the main piston;
the clamping jaw is rotatably connected to the inner wall of the mounting groove and comprises a first clamping jaw and a second clamping jaw, the left sides of the opposite surfaces of the first clamping jaw and the second clamping jaw are respectively provided with a first left guide inclined surface and a second left guide inclined surface, the middle parts of the opposite surfaces of the first clamping jaw and the second clamping jaw are respectively provided with a first clamping step and a second clamping step, the right sides of the opposite surfaces of the first clamping jaw and the second clamping jaw are respectively provided with a first right guide inclined surface and a second right guide inclined surface, and a first spring and a second spring are fixedly connected between the right sides of the opposite surfaces of the first clamping jaw and the second clamping jaw and the inner wall of the mounting groove;
the connecting hole is formed in the inner end face of the rear cover and is communicated with the oil port A and the rear inner cavity, a clamping groove used for clamping the first clamping step and the second clamping step is formed in the inner wall of the connecting hole, when the main piston moves towards the rear cover, the first clamping step and the second clamping step can be driven to move, and then the first clamping step and the second clamping step are driven to enter the connecting hole, so that the main piston and the clamping groove are clamped with each other under the action of the first spring and the second spring;
the installation cavity is seted up in the main piston, sliding connection has the unblock piston in the installation cavity, just the unblock piston will left chamber and right chamber are separated into to the installation cavity, the left side fixedly connected with of unblock piston penetrates the connecting rod of mounting groove, the connecting rod is located one end fixedly connected with unblock piece in the mounting groove, set up on the connecting rod with the mounting groove the first runner of right chamber intercommunication, set up on the main piston with the left chamber the second runner of preceding inner chamber intercommunication, left intracavity fixedly connected with cover be in the connecting rod outside and be used for with the unblock piston pushes to the locking spring in right chamber when the unblock piston moves left, can drive the unblock piece removes left and uses on first right direction inclined plane with on the second right direction inclined plane, make first jack catch, The left end of second jack catch is inside to be rotated to drive first joint step with second joint step breaks away from the joint groove makes master piston can move right.
2. The sanitation garbage truck oil cylinder according to claim 1, wherein the first jaw and the second jaw are symmetrically arranged along a central axis of the cylinder barrel.
3. The sanitation garbage truck oil cylinder as claimed in claim 1, wherein an annular oil groove is formed in a right end surface of the unlocking piston.
4. The sanitation garbage truck oil cylinder as claimed in claim 1, wherein the inner wall of the left cavity is provided with a limit step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960078.3A CN112081795A (en) | 2020-09-14 | 2020-09-14 | Oil cylinder of sanitation garbage truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010960078.3A CN112081795A (en) | 2020-09-14 | 2020-09-14 | Oil cylinder of sanitation garbage truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112081795A true CN112081795A (en) | 2020-12-15 |
Family
ID=73738154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010960078.3A Withdrawn CN112081795A (en) | 2020-09-14 | 2020-09-14 | Oil cylinder of sanitation garbage truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112081795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762048A (en) * | 2021-01-06 | 2021-05-07 | 武芳 | Oil cylinder of sanitation garbage truck |
| CN115027785A (en) * | 2022-05-31 | 2022-09-09 | 北京华北包装有限公司 | Stacked transport case |
-
2020
- 2020-09-14 CN CN202010960078.3A patent/CN112081795A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762048A (en) * | 2021-01-06 | 2021-05-07 | 武芳 | Oil cylinder of sanitation garbage truck |
| CN115027785A (en) * | 2022-05-31 | 2022-09-09 | 北京华北包装有限公司 | Stacked transport case |
| CN115027785B (en) * | 2022-05-31 | 2024-03-15 | 北京华北包装有限公司 | Stacked transport case |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201215 |
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| WW01 | Invention patent application withdrawn after publication |