CN210436072U - Shaft sleeve pressing system and pressing machine - Google Patents
Shaft sleeve pressing system and pressing machine Download PDFInfo
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- CN210436072U CN210436072U CN201921537925.4U CN201921537925U CN210436072U CN 210436072 U CN210436072 U CN 210436072U CN 201921537925 U CN201921537925 U CN 201921537925U CN 210436072 U CN210436072 U CN 210436072U
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Abstract
The embodiment of the utility model provides an axle sleeve suppression system and pressure cover machine relates to axle sleeve installation technical field. The problem that the shaft sleeve is easy to shift or interfere with the shaft sleeve in the conventional operation of pressing the shaft sleeve into the shaft sleeve hole is solved. The shaft sleeve pressing system comprises a three-position four-way valve, a sleeve pressing oil cylinder and a first branch; the pressure sensor is arranged on the first branch, and the controller is used for receiving a pressure signal which is sent by the pressure sensor and represents an oil pressure value, and enabling the three-position four-way valve to be in any one state of a right position and a middle position. When the tribit cross valve is in the right position, press the cover hydro-cylinder to have the pole chamber oil feed when, the axle sleeve is impressed the axle sleeve hole, pressure sensor detects the oil feed oil pressure that presses the cover hydro-cylinder to have the pole chamber, when the oil pressure value is in reasonable scope, controller control tribit cross valve continues to be in the right position, continue to impress the axle sleeve hole with the axle sleeve, when the oil pressure value exceedes reasonable scope, it is unmatched to explain axle sleeve and axle sleeve hole, controller control tribit cross valve is in the meso position, stop the axle sleeve and continue to impress the axle sleeve hole, play the foo.
Description
Technical Field
The utility model relates to an axle sleeve installation technical field particularly, relates to an axle sleeve suppression system and pressure cover machine.
Background
At present, the shaft sleeve of a working device (movable arm/bucket rod) of an engineering mechanical excavator is pressed into a shaft sleeve hole by a special sleeve pressing machine, and a sleeve pressing oil cylinder starts to work to press the shaft sleeve into the shaft sleeve hole as long as output pressure exists during the working of the sleeve pressing machine. The existing sleeve pressing machine cannot judge the pressure, the sleeve pressing process completely depends on experience, and the problem of sleeve fleeing or interference of the shaft sleeve can be caused after the shaft sleeve is pressed when the size of a shaft sleeve hole is out of tolerance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a shaft sleeve pressing system, for example, it can improve the operation that current shaft sleeve impresses the shaft sleeve hole and easily appears the shaft sleeve and scurry the problem of cover or shaft sleeve interference.
The utility model discloses an aim still includes, provides a press cover machine, and it can improve easily appear eccentric wear or abnormal sound scheduling problem in the excavator use.
The embodiment of the utility model discloses a can realize like this:
the embodiment of the utility model provides an axle sleeve suppression system, include:
the three-position four-way valve, the sleeve pressing oil cylinder and a first branch circuit with a rod cavity for communicating the three-position four-way valve and the sleeve pressing oil cylinder;
the pressure sensor is communicated with the controller, the pressure sensor is arranged on the first branch and used for detecting an oil pressure value in the first branch, the controller is used for receiving a pressure signal which represents the oil pressure value and is sent by the pressure sensor, the three-position four-way valve is in any one state of a right position and a middle position, and when the three-position four-way valve is in the right position, oil enters a rod cavity of the pressing sleeve oil cylinder.
In addition, the embodiment of the utility model provides a shaft sleeve pressing system can also have following additional technical characteristics:
optionally: the controller is used for controlling the three-position four-way valve to be in the right position when the oil pressure value is larger than or equal to the first preset value and smaller than or equal to the second preset value.
Optionally: the controller is used for controlling the three-position four-way valve to be in a middle position when the oil pressure value is smaller than a first preset value or larger than a second preset value.
Optionally: the shaft sleeve pressing system further comprises an alarm lamp and a buzzer, wherein the alarm lamp and the buzzer are communicated with the controller, and the controller is used for controlling the alarm lamp to be turned on and the buzzer to sound when the oil pressure value received in the first preset time is smaller than a first preset value or larger than a second preset value.
Optionally: the controller is used for controlling the alarm lamp to be turned on and the buzzer to sound when the oil pressure value received in the second preset time is smaller than the first preset value or larger than the second preset value.
Optionally: the shaft sleeve pressing system also comprises a detection pipeline and a control line;
the oil port end of the pressure sensor is communicated with the first branch through a detection pipeline, and the other end of the pressure sensor is electrically connected with the controller through a control line.
Optionally: the shaft sleeve pressing system also comprises an oil tank, a safety pipeline and a first overflow valve arranged on the safety pipeline;
one end of the safety pipeline is communicated with the oil tank, and the other end of the safety pipeline is communicated with the first branch.
Optionally: the first overflow valve is used for starting when the oil pressure of the first branch path is larger than the set limit pressure of the first overflow valve.
Optionally: the middle position function of the three-position four-way valve is M-shaped.
The embodiment of the utility model provides a press cover machine that still provides presses the cover machine to include axle sleeve suppression system.
The utility model discloses axle sleeve suppression system and pressure cover machine's beneficial effect includes, for example:
the shaft sleeve pressing system comprises a shaft sleeve pressing system, a three-position four-way valve, a first branch, a second branch and a controller, wherein the three-position four-way valve is arranged on the right side, the first branch is used for supplying oil to a rod cavity of a pressing sleeve oil cylinder, when the pressing sleeve oil cylinder has oil in the rod cavity, a shaft sleeve is pressed into a shaft sleeve hole, the pressure sensor can detect an oil pressure value in the first branch, the matching state of the shaft sleeve and the shaft sleeve hole can be obtained, when the oil pressure value is in a reasonable range, the shaft sleeve is matched with the shaft sleeve hole, the controller controls the three-position four-way valve to be continuously arranged on the right side, the shaft sleeve is continuously pressed into the shaft sleeve hole, when the oil pressure value exceeds the reasonable range, the shaft sleeve is not matched with the shaft sleeve hole, the controller controls the three-.
The sleeve pressing machine comprises the above shaft sleeve pressing system, the pressure sensor and the controller are combined, the problem that the sleeve is easily jumped or the shaft sleeve is interfered by the shaft sleeve in the operation of pressing the existing shaft sleeve into a shaft sleeve hole can be solved, and therefore the problem that eccentric wear or abnormal sound occurs to a working device in the use process of the excavator can be solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a shaft sleeve pressing system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a shaft sleeve pressing system according to an embodiment of the present invention.
Icon: 10-a shaft sleeve pressing system; 110-pressing sleeve oil cylinder; 120-three-position four-way valve; 130-a pressure sensor; 140-a controller; 150-a first relief valve; 160-oil tank; 170-an oil pump; 180-a second overflow valve; 190-an air filter; 200-a liquid level meter; 210-pressure gauge; 300-a first branch; 301-a second branch; 400-detecting the pipeline; 500-control line; 600-safety pipelines; 700-oil supply line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The shaft sleeve is pressed into the shaft sleeve hole and is completed by a special sleeve pressing machine, and when the shaft sleeve is not matched with the shaft sleeve hole, the problem of sleeve fleeing or interference is easy to occur after the shaft sleeve is pressed. In the prior art, the diameter of axle sleeve and axle sleeve hole is mainly measured through the accuracy to reach the purpose of improving scurrying cover and interference problem, but measure and have the error, press the cover machine still can't prevent staying, fragile axle sleeve and axle sleeve hole. The shaft sleeve pressing system and the shaft sleeve pressing machine provided by the embodiment can improve the technical problem.
The embodiment of the utility model provides a press cover machine, including axle sleeve pressing system. Also comprises a machine body. When the sleeve is pressed, the working device (a movable arm or a bucket rod) is fixed on the machine body, the shaft sleeve corresponds to a shaft sleeve hole of the working device, and then the sleeve pressing process is controlled by using a shaft sleeve pressing system.
The shaft sleeve pressing system 10 provided in the present embodiment will be described in detail with reference to fig. 1 to 2.
The embodiment of the utility model provides a shaft sleeve pressing system 10, including three-position four-way valve 120, pressing sleeve oil cylinder 110 and the first branch 300 of the rod cavity that communicates three-position four-way valve 120 and pressing sleeve oil cylinder 110; pressure sensor 130 and controller 140, pressure sensor 130 and controller 140 communicate, pressure sensor 130 sets up in first branch 300 and is used for detecting the oil pressure value in first branch 300, controller 140 is used for receiving the pressure signal of the representation oil pressure value that pressure sensor 130 sent, and makes three-position four-way valve 120 be in any state in right position and well position, and when three-position four-way valve 120 was in the right position, the pole chamber of pressure cover hydro-cylinder 110 was oil feed. Specifically, the sleeve pressing system 10 further includes a second branch 301, and the rodless cavity of the sleeve pressing oil cylinder 110 is communicated with the three-dimensional four-way valve through the second branch 301. Specifically, the first branch 300 communicates with the port a of the three-position four-way valve 120, and the second branch 301 communicates with the port B of the three-position four-way valve 120. Specifically, the three-position, four-way valve 120 is a solenoid valve. It should be noted that the oil supply of the sleeve pressing oil cylinder 110 is controlled by the three-position four-way valve 120, and the oil supply can be an oil tank, an oil drum or an oil supply station, and the oil tank, the oil drum or the oil supply station supplies oil to the sleeve pressing oil cylinder 110 through the three-position four-way valve 120.
When the three-position four-way valve 120 is in the right position, the rod cavity of the sleeve pressing oil cylinder 110 is filled with oil, the piston rod of the sleeve pressing oil cylinder 110 retracts, the sleeve pressing oil cylinder 110 is in the working position, and a shaft sleeve is pressed into a shaft sleeve hole. When the three-position four-way valve 120 is in the left position, the rodless cavity of the sleeve pressing oil cylinder 110 takes oil, the piston rod of the sleeve pressing oil cylinder 110 extends out of the cylinder body, and the sleeve pressing oil cylinder 110 is in the non-working position. When the three-position four-way valve 120 is in the middle position, the rod cavity and the rodless cavity of the sleeve pressing oil cylinder 110 stop oil feeding, and the shaft sleeve stops being pressed into the shaft sleeve hole. In this embodiment, the three-position four-way valve 120 is an electromagnetic valve, the three-position four-way valve 120 includes a left magnetic block b and a right magnetic block a, the left magnetic block b is energized, and the three-position four-way valve 120 is in the left position; the right magnetic block a is energized and the three-position four-way valve 120 is in the right position.
The first branch 300 is used for supplying oil to a rod cavity of the sleeve pressing oil cylinder 110, the rod cavity supplies oil, the pressing sleeve starts to be pressed into the shaft sleeve hole, the oil supply pressure on the first branch 300 can reflect the pressure applied to the shaft sleeve pressed into the shaft sleeve hole, and whether the shaft sleeve is matched with the shaft sleeve hole or not can be obtained according to the pressure, so that whether the shaft sleeve is matched with the shaft sleeve hole or not can be obtained according to the oil supply pressure on the first branch 300. In the process of pressing the shaft sleeve into the shaft sleeve hole, the pressure is gradually increased, so that when the oil pressure value is within a reasonable range, the shaft sleeve can be regarded as being matched with the shaft sleeve hole, and the reasonable range is set according to the sizes of the shaft sleeve and the shaft sleeve hole.
Initially, the three-position, four-way valve 120 is in the neutral position. Then the handle is operated, the three-position four-way valve 120 is controlled to be in the left position by the controller 140, the second branch 301 supplies oil, the rodless cavity of the sleeve pressing oil cylinder 110 feeds oil, at the moment, the rod cavity of the sleeve pressing oil cylinder 110 discharges oil, the first branch 300 feeds oil, the oil pressure on the first branch 300 is small, the pressure sensor 130 can hardly detect the oil pressure value, the piston rod of the sleeve pressing oil cylinder 110 extends out, and the preparation work before the shaft sleeve is pressed into the shaft sleeve hole is started.
After the preparation work is finished, the handle is operated again, the three-position four-way valve 120 is controlled to be in the right position through the controller 140, the first branch 300 supplies oil, the rod cavity of the sleeve pressing oil cylinder 110 is filled with oil, the piston rod of the sleeve pressing oil cylinder 110 retracts, and a shaft sleeve is pressed into the shaft sleeve hole. The first branch 300 starts to supply oil, and the pressure sensor 130 can detect the change in the oil pressure on the first branch 300 and transmit a pressure signal representing the value of the oil pressure to the controller 140 in real time. When the oil pressure value is in a reasonable range, the shaft sleeve is matched with the shaft sleeve hole, the controller 140 controls the three-position four-way valve 120 to be continuously positioned at the right position, the first branch 300 continuously supplies oil to the rod cavity, and the shaft sleeve is continuously pressed into the shaft sleeve hole; until the bushing is fully pressed into the bushing bore, the handle controls the three-position, four-way valve 120 to be in the neutral position via the controller 140. When the oil pressure value exceeds the reasonable range, which indicates that the shaft sleeve is not matched with the shaft sleeve hole, the controller 140 controls the three-position four-way valve 120 to be in the middle position, and the oil supply is stopped.
That is, the left and right positions of the three-position four-way valve 120 are switched by the controller 140 and operated by the handle. After the first branch 300 starts to supply oil, the three-position four-way valve 120 is switched between the right position and the middle position, and is controlled by the controller 140 according to the oil pressure value of the pressure sensor 130. When the shaft sleeve is completely pressed into the shaft sleeve hole, the handle controls the three-position four-way valve 120 to be in the middle position through the controller 140, and the pressing is stopped. When the shaft sleeve is not matched with the shaft sleeve hole, the controller 140 controls the three-position four-way valve 120 to be in the middle position, and after the end, when the shaft sleeve needs to be withdrawn from the shaft sleeve hole, the handle controls the three-position four-way valve to be in the left position through the controller 140. That is, the shaft sleeve pressing system 10 provided in this embodiment is used for adjusting and controlling the process of pressing the shaft sleeve into the shaft sleeve hole, and corresponds to switching the three-dimensional four-way valve between the middle position and the right position.
In this embodiment, the controller 140 is configured to control the three-position four-way valve 120 to be in the right position when the oil pressure value is greater than or equal to the first preset value and less than or equal to the second preset value. The controller 140 is configured to control the three-position four-way valve 120 to be in the neutral position when the oil pressure value is smaller than the first preset value or larger than the second preset value. The first preset value to the second preset value is a reasonable range of the oil pressure value. The first preset value and the second preset value are preset according to the sizes of the shaft sleeve and the shaft sleeve hole.
Referring to fig. 1, in the present embodiment, the shaft sleeve pressing system 10 further includes a warning lamp and a buzzer, which are in communication with the controller 140, and the controller 140 is configured to control the warning lamp to be turned on and the buzzer to be turned off when the oil pressure value received in the first preset time is smaller than the first preset value or larger than the second preset value. The alarm lamp is on and the buzzer sounds, which shows that the oil pressure value of the first branch 300 is smaller than the first preset value or larger than the second preset value, and the shaft sleeve stops being pressed into the shaft sleeve hole. The controller 140 controls the three-position four-way valve 120 to be in the middle position, the oil pressure value of the first branch 300 is zero, and at the moment, the alarm lamp is turned off and the buzzer stops sounding. That is, after the alarm lamp is turned off and the buzzer stops sounding until the shaft sleeve stops being pressed into the shaft sleeve hole. Any one of an alarm lamp and a buzzer is arranged in the shaft sleeve pressing system, or the alarm lamp and the buzzer are arranged simultaneously, so that the prompt effect is stronger.
The controller 140 is configured to control the alarm lamp to be turned on and the buzzer to sound when the oil pressure value received in the second preset time is smaller than the first preset value or larger than the second preset value. Specifically, when the oil pressure value received in the first preset time is smaller than a first preset value or larger than a second preset value, the alarm lamp is controlled to be turned on and the buzzer is controlled to sound, and the controller 140 controls the three-position four-way valve 120 to be in the middle position, so that oil supply is stopped, the alarm lamp is turned off and the buzzer stops sounding; and then if the operator operates the action of pressing the shaft sleeve into the shaft sleeve hole again, after the oil supply is stopped, the second preset time is reached and the oil pressure value is still smaller than the first preset value or larger than the second preset value, the alarm lamp is turned on and the buzzer sounds, and the alarm lamp is turned on and the buzzer sounds and stops when the third preset time is reached.
With continued reference to fig. 1, in the present embodiment, the shaft sleeve pressing system 10 further includes a detection pipeline 400 and a control line 500; the oil port end of the pressure sensor 130 is communicated with the first branch line 300 through the detection line 400, and the other end of the pressure sensor 130 is electrically connected with the controller 140 through the control line 500. The detection circuit 400 is communicated with the first branch circuit 300, and when the first branch circuit 300 is supplied with oil, the pressure sensor 130 detects the oil pressure value of the first branch circuit 300 through the detection circuit 400, and then forms a pressure signal representing the oil pressure value and sends the pressure signal to the controller 140.
With continued reference to fig. 1, in the present embodiment, the sleeve pressing system 10 further includes an oil tank 160, a safety line 600, and a first relief valve 150 disposed on the safety line 600; one end of the safety line 600 communicates with the oil tank 160, and the other end of the safety line 600 communicates with the first branch line 300. Specifically, the first relief valve 150 is configured to be activated when the oil pressure of the first branch passage 300 is greater than a limit pressure set by the first relief valve 150. The first relief valve 150 functions as a safety valve, and when the oil supply pressure in the first branch passage 300 is high, the first relief valve 150 is opened, and the oil returns to the oil tank 160 through the first relief valve 150, so that the oil supply balance of the first branch passage 300 is maintained.
With continued reference to fig. 1, in the present embodiment, the middle position of the three-position four-way valve 120 can be "M" type. When the three-position four-way valve 120 is in the neutral position, P and T are communicated, the first branch 300 and the second branch 301 stop supplying oil, and the oil flowing through the three-position four-way valve 120 flows back to the oil tank 160.
With reference to fig. 1, in the present embodiment, the sleeve pressing system 10 further includes an oil supply line 700, and the oil pump 170 and the second relief valve 180 which are disposed on the oil supply line 700, the oil supply line 700 is communicated with the oil tank 160, and the oil supply line 700 is connected to the P port and the T port of the three-position four-way valve 120. The oil pump 170 is used to provide power for the circulation of oil in the oil tank 160. The second overflow valve 180 is used for returning the oil to the oil tank 160 when the three-position four-way valve 120 is in the neutral position and the oil supply pressure on the oil supply pipeline 700 is high, so as to prevent the oil supply pipeline 700 from being damaged.
With continued reference to fig. 1, in the present embodiment, the sleeve pressing system 10 further includes an air cleaner 190 mounted on the oil tank 160, and the air cleaner 190 is mounted at an air port of the oil tank 160 for preventing foreign matters from entering the oil tank 160 during intake and exhaust. The sleeve suppression system 10 further includes a level gauge 200 for measuring the level of the oil level in the oil tank 160. The sleeve pressing system 10 further includes a pressure gauge 210 for displaying the magnitude of the oil supply pressure on the oil supply line 700.
After the oil pump 170 is turned on, the oil in the oil tank 160 is delivered to the three-position four-way valve 120 through the oil supply line 700, and initially, the three-position four-way valve 120 is in the middle position.
Referring to fig. 2, a detailed description of the sleeve pressing control method will be given.
The shaft sleeve pressing control method comprises the following steps: and receiving a pressure signal representing the oil pressure value sent by the pressure sensor 130, and enabling the three-position four-way valve 120 to be in any one state of a right position and a middle position.
Initially, the handle is operated to control the three-position, four-way valve 120 to the right via the controller 140.
When the first preset time is reached and the oil pressure value is smaller than the first preset value (the first preset time is equal to the first preset time), the three-position four-way valve 120 is controlled to be in the middle position. At this time, the alarm lamp is turned on and the buzzer sounds, the press-in process is stopped until the press-in process is stopped, the oil pressure value is zero at this time, the alarm lamp is turned off and the buzzer stops sounding. When the accumulated time reaches a second preset time (the second preset time is equal to the second preset time) after the oil supply is stopped and the oil pressure value is smaller than the first preset value, the alarm lamp is turned on and the buzzer sounds. After the alarm lamp is on and the buzzer sounds for a third preset time, the alarm lamp is turned off and the buzzer stops sounding. When the shaft sleeve is just pressed in, the pressure is low, the judgment error of the controller 140 is relatively large, so that the first preset time is delayed to judge whether the oil pressure value is smaller than the first preset value, the length of each shaft sleeve is fixed, and the pressing-in time of each shaft sleeve can be basically determined, for example, the time corresponding to the pressing-in 3/4 length of the shaft sleeve is the first preset time. After the oil supply is stopped, an operator may operate the shaft sleeve to press the shaft sleeve into the shaft sleeve hole again, so that after the second preset time is reached (the second preset time is equal to the second preset time), the oil pressure value is still smaller than the first preset value, the shaft sleeve is explained to be continuously pressed into the shaft sleeve hole, and at the moment, the alarm lamp is turned on and the buzzer sounds; the alarm lamp is on and the buzzer sounds for a third preset time and then stops. In this embodiment, the third preset time period is 10 s.
When the first preset time (the first preset time is equal to the first preset time) is reached and the oil pressure value is greater than the first preset value and less than the second preset value, the three-position four-way valve 120 continues to be in the right position. And (4) until the shaft sleeve is completely pressed into the shaft sleeve hole, the handle control controller 140 is in the middle position, and the sleeve pressing is finished.
When the oil pressure values of the front and the back twice are greater than the second preset value (that is, the oil pressure value obtained for the first time is greater than the second preset value, and after the fourth preset time is reached, the oil pressure value obtained for the second time is still greater than the second preset value), the alarm lamp is turned on, the buzzer sounds, the pressing-in process is stopped until the pressing-in process is stopped, and at the moment, the oil pressure value is zero, the alarm lamp is turned off, and the buzzer stops sounding. And after the oil pressure value is zero, when the oil pressure value reaches a fifth preset time (the fifth preset time is equal to the second preset time) in an accumulated mode and the oil pressure value is larger than the second preset value, an alarm lamp is turned on, and a buzzer sounds. After the alarm lamp is on and the buzzer sounds for the sixth preset time, the alarm lamp is turned off and the buzzer stops sounding. After the oil supply is stopped, an operator may operate the shaft sleeve to press into the shaft sleeve hole again, so that when the fifth preset time is reached and the oil pressure value is greater than the second preset value, the shaft sleeve is explained to be continuously pressed into the shaft sleeve hole, and at the moment, the alarm lamp is turned on and the buzzer sounds; the alarm lamp is turned on and the buzzer sounds for a sixth preset time and then stops. In this embodiment, the fourth preset time period is 0.3 s. The sixth preset time period is 10 s.
It should be noted that: the first preset time (the first preset time period, the fourth preset time period) is counted when the sleeve starts to be pressed into the sleeve hole, that is, when the pressure sensor starts to detect the oil pressure on the first branch. The second preset time (the second preset time and the fifth preset time) is set by the three-position four-way valve in the middle position, and the oil pressure value on the first branch is zero to start timing.
The shaft sleeve pressing system 10 provided by the embodiment at least has the following advantages:
the oil supply pressure on the first branch 300 indirectly reflects the pressure of the shaft sleeve pressed into the shaft sleeve hole, the oil supply pressure on the first branch 300 is detected through the pressure sensor 130, and the controller 140 controls the three-position four-way valve 120 to be continuously positioned at the right position according to the oil pressure value of the pressure sensor 130, so that the shaft sleeve is pressed in, or the shaft sleeve is positioned at the middle position and stops being pressed in, and the foolproof effect is achieved. The first relief valve 150 functions as a safety valve to prevent the failure of pressing the bushing into the bushing hole due to the excessive oil supply pressure of the first branch 300.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A bushing pressing system, comprising:
the hydraulic oil cylinder comprises a three-position four-way valve (120), a sleeve pressing oil cylinder (110) and a first branch (300) with a rod cavity for communicating the three-position four-way valve (120) and the sleeve pressing oil cylinder (110);
pressure sensor (130) and controller (140), pressure sensor (130) with controller (140) communication, pressure sensor (130) set up in first branch road (300) and be used for detecting the oil pressure value in first branch road (300), controller (140) are used for receiving the sign that pressure sensor (130) sent the pressure signal of oil pressure value, and make three-position four-way valve (120) are in any state in right position and the meso position, when three-position four-way valve (120) are in the right position, the pole chamber oil feed of pressing sleeve hydro-cylinder (110).
2. The bushing pressing system of claim 1 wherein:
the controller (140) is used for controlling the three-position four-way valve (120) to be in the right position when the oil pressure value is greater than or equal to a first preset value and less than or equal to a second preset value.
3. The bushing pressing system of claim 2, wherein:
the controller (140) is used for controlling the three-position four-way valve (120) to be in a middle position when the oil pressure value is smaller than the first preset value or larger than the second preset value.
4. The bushing pressing system of claim 3 wherein:
the shaft sleeve pressing system further comprises a warning lamp and a buzzer, wherein the warning lamp and the buzzer are communicated with the controller (140), and the controller (140) is used for controlling the warning lamp to be turned on and the buzzer to be turned off when the oil pressure value received in first preset time is smaller than the first preset value or larger than the second preset value.
5. The bushing pressing system of claim 4, wherein:
the controller (140) is used for controlling the alarm lamp to be turned on and the buzzer to sound when the oil pressure value received in second preset time is smaller than the first preset value or larger than the second preset value.
6. The bushing pressing system according to any one of claims 1 to 5, wherein:
the shaft sleeve pressing system further comprises a detection pipeline (400) and a control line (500);
an oil port end of the pressure sensor (130) is communicated with the first branch (300) through the detection pipeline (400), and the other end of the pressure sensor (130) is electrically connected with the controller (140) through the control line (500).
7. The bushing pressing system of claim 6 wherein:
the shaft sleeve pressing system further comprises an oil tank (160), a safety pipeline (600) and a first overflow valve (150) arranged on the safety pipeline (600);
one end of the safety pipeline (600) is communicated with the oil tank (160), and the other end of the safety pipeline (600) is communicated with the first branch (300).
8. The bushing pressing system of claim 7 wherein:
the first overflow valve (150) is used for starting when the oil pressure of the first branch (300) is larger than the set limit pressure of the first overflow valve (150).
9. The bushing pressing system of claim 1 wherein:
the middle position function of the three-position four-way valve (120) is M-shaped.
10. The utility model provides a press cover machine which characterized in that:
the bushing press comprises a bushing press system according to any one of claims 1-9.
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| CN201921537925.4U CN210436072U (en) | 2019-09-16 | 2019-09-16 | Shaft sleeve pressing system and pressing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921537925.4U CN210436072U (en) | 2019-09-16 | 2019-09-16 | Shaft sleeve pressing system and pressing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450099A (en) * | 2019-09-16 | 2019-11-15 | 三一重机有限公司 | Axle sleeve compact system and sleeve pressing machine |
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- 2019-09-16 CN CN201921537925.4U patent/CN210436072U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450099A (en) * | 2019-09-16 | 2019-11-15 | 三一重机有限公司 | Axle sleeve compact system and sleeve pressing machine |
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