Hydraulic oil flow standard device
By arranging the piston cylinder liner, counterweight plate, three-way valve, connecting sleeve and timer in the hydraulic oil flow standard device, the problems of the device's insufficient applicability to loaded hydraulic oil flow and low timing accuracy are solved, and the Greater standard operating suitability and accuracy.
Patent Information
- Application Number
- CN202423158502.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
When the hydraulic oil flow standard device is working, it is not suitable for the standard operation of the loaded hydraulic oil flow standard, and the timing accuracy is not high enough, which affects the accuracy of the standard.
By setting up the piston cylinder liner, weight plate, three-way valve, connecting sleeve and timer, the oil workload is provided, the on and off of the hydraulic oil delivery is controlled, and the piston cylinder liner is timed by the timer.
The applicability of the hydraulic oil flow standard device to the standard operation of loaded hydraulic oil flow is improved, the timing accuracy is enhanced, and the accuracy of the standard is improved.
Smart Images
Figure CN222376867U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydraulic oil flow detection, in particular to a hydraulic oil flow standard device. Background Art
[0002] The hydraulic oil flow standard device is a device specially used to measure and verify the flow of hydraulic oil. It usually consists of a liquid source, a test pipeline, a standard liquid flow meter, a timer and a control device. Its working principle is to make the fluid pass through the standard flow meter and the flow meter under test continuously at the same time interval, and then determine the metering performance of the flow meter under test by comparing the output flow values of the two. However, it still has the following disadvantages in actual use:
[0003] When the hydraulic oil flow standard device is working, the oil flow is directly determined by the standard device. However, in normal operation, there is a certain load in the oil circuit. Under load, the oil flow is different from the no-load flow. The current standard device directly detects the no-load flow, which is not suitable for the standard operation of hydraulic oil flow under load.
[0004] When the hydraulic oil flow standard device is working, the oil is directly transported to the standard device and then the standard operation is performed. When the hydraulic oil is operated in a standard manner, the timing operation can only be performed through an external timing device. The timing accuracy is not high enough, which affects the accuracy of the standard. Utility Model Content
[0005] The purpose of the utility model is to provide a hydraulic oil flow standard device, which solves the problems that the hydraulic oil flow standard device is not good enough in the operation of hydraulic oil flow standard with load during operation, and the timing accuracy is not high enough to affect the accuracy of the standard by arranging a piston cylinder sleeve, a counterweight plate, a three-way valve, a connecting sleeve and a timer.
[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0007] The utility model discloses a hydraulic oil flow standard device, comprising a piston cylinder sleeve, a counterweight plate, a three-way valve, a connecting sleeve and a timer, wherein a lifting piston is movably connected in the piston cylinder sleeve, a piston rod is fixed at the top end of the lifting piston, the piston rod is movably connected to the top end of the piston cylinder sleeve, a supporting tray is fixed at the top end of the piston rod, two counterweight plates stacked on each other are arranged at the top end of the supporting tray, an oil delivery chamber is fixed at the bottom end of the piston cylinder sleeve, a three-way valve is arranged at one side of the oil delivery chamber, a bypass pipe is fixedly connected at one end of the three-way valve away from the oil delivery chamber, a delivery pipe is fixedly connected at the upper part of the peripheral side of the bypass pipe, a connecting sleeve is fixedly connected at the top end of the delivery pipe, a timer is fixed at the top end of the connecting sleeve, when working, the lifting piston is movably connected therein through the piston cylinder sleeve, the counterweight plate is driven to rise and fall when the lifting piston is lifted, and when working, the working load of oil is provided through the counterweight plate, the on and off of the hydraulic oil delivery is controlled by the three-way valve, the timer is connected through the connecting sleeve, and the piston cylinder sleeve is timed by the timer.
[0008] Furthermore, the piston cylinder sleeve is fixed at the top center of the oil delivery chamber, and an oil delivery hole is opened at the top center of the oil delivery chamber. The inner diameter of the oil delivery hole is smaller than the inner diameter of the piston cylinder sleeve. The peripheral side of the piston rod is printed with printed scales. When the piston cylinder sleeve is working, the oil delivery chamber delivers oil to the piston cylinder sleeve through the oil delivery hole.
[0009] Furthermore, an insertion rod 1 is fixed at the center of the top of the support tray, and a socket is opened in each of the counterweight plates along the central axis, and an insertion rod 2 is fixed to the upper part of the socket on each counterweight plate. The insertion rod 1 is inserted into the socket on the counterweight plate located below, and the insertion rod 2 is inserted into the socket on the counterweight plate located above. When the support tray is working, the insertion rod 1 is inserted into the socket to cooperate with the restriction of the counterweight plate.
[0010] Furthermore, one end of the three-way valve close to the oil delivery chamber is fixedly connected with a fixed pipe, and one end of the fixed pipe away from the three-way valve is fixedly connected with the oil delivery chamber. When the three-way valve is working, it is connected with the oil delivery chamber through the fixed pipe.
[0011] Furthermore, a pushing piston is movably connected in the connecting sleeve, a pushing rod is fixed to the top of the pushing piston, and a movable hole is opened in the center of the top of the connecting sleeve. When the connecting sleeve is working, the pushing piston drives the pushing rod to rise and fall.
[0012] Furthermore, a push switch is fixed at the bottom end of the timer, and the push switch is arranged in the movable hole. When the timer is working, the push switch is pushed into the movable hole to press the timely switch.
[0013] The utility model has the following beneficial effects:
[0014] The utility model solves the problem that the hydraulic oil flow standard device is not good enough in the application of the hydraulic oil flow standard operation with load when working by arranging the piston cylinder sleeve and the counterweight plate. The load required for the hydraulic oil working is determined, and then the appropriate number of counterweight plates are selected, and the counterweight plate is inserted into the insertion hole on the counterweight plate located below by inserting the first plug rod, so that the counterweight plate is positioned on the support tray, and then the second plug rod on the counterweight plate located below is aligned with the insertion hole on the counterweight plate located above, and the counterweight plate located above is placed on the counterweight plate located below. After repeated work, multiple counterweight plates are combined together and supported on the support tray, and then the work can be started. When working, the oil is transported to the oil delivery cavity through the fixed pipe, and then transported to the piston cylinder sleeve through the oil delivery hole on the oil delivery cavity, so as to push the lifting piston to rise and fall, and the oil flow rate of the oil at a given time is determined by the front and rear changes of the printed scale on the piston rod, and after comparing with the measured part, it is determined whether the flow rate measured by the measured part is accurate, so that when working, the hydraulic oil flow standard device is better applicable to the hydraulic oil flow standard operation with load when working.
[0015] The utility model solves the problem that the timing accuracy of a hydraulic oil flow standard device is not high enough and affects the standard accuracy by arranging a piston cylinder sleeve, a three-way valve, a connecting sleeve and a timer. When the oil flow is stable, the hand wheel of the three-way valve is turned to change the flow direction and the oil is transported to the fixed pipe. The oil is transported back to the bypass pipe in the connecting sleeve. At this time, the push rod releases the pressing switch, the timer starts timing, and the external detected flow meter starts working at the same time. When the given time is reached, the three-way valve is readjusted so that the oil is transported to the bypass pipe, the push rod presses the pressing switch, the timer stops timing, and the oil is stopped from being transported to the oil delivery chamber, so that the timing accuracy of the hydraulic oil flow standard device is higher and the influence of timing on the standard accuracy is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a stereogram of the assembly structure of a hydraulic oil flow standard device;
[0018] Figure 2 It is a three-dimensional diagram of the piston-cylinder structure;
[0019] Figure 3 It is a three-dimensional diagram of the counterweight plate structure;
[0020] Figure 4 It is a three-way valve structure stereogram;
[0021] Figure 5 It is a three-dimensional diagram of the connecting sleeve structure;
[0022] Figure 6 This is a three-dimensional diagram of the timer structure.
[0023] Reference numerals:
[0024] 1. Piston cylinder sleeve; 101. Lifting piston; 102. Piston rod; 103. Printed scale; 104. Support tray; 105. Insert rod one; 106. Oil delivery chamber; 107. Oil delivery hole; 2. Counterweight plate; 201. Insert hole; 202. Insert rod two; 3. Three-way valve; 301. Bypass pipe; 302. Delivery pipe; 303. Fixed pipe; 4. Connecting sleeve; 401. Movable hole; 402. Push piston; 403. Push rod; 5. Timer; 501. Push switch. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1
[0026] See also Figure 1-6The utility model is a hydraulic oil flow standard device, including a piston cylinder sleeve 1, a counterweight plate 2, a three-way valve 3, a connecting sleeve 4 and a timer 5. A lifting piston 101 is movably connected in the piston cylinder sleeve 1. When the piston cylinder sleeve 1 is working, hydraulic oil enters therein to push the lifting piston 101 to rise and fall. A piston rod 102 is fixed to the top of the lifting piston 101. The piston rod 102 is movably connected to the top of the piston cylinder sleeve 1. When the piston rod 102 is lifted or lowered, it extends or retracts the piston cylinder sleeve 1 to determine the change in oil in the piston cylinder sleeve 1. A supporting tray 104 is fixed to the top of the piston rod 102. The counterweight plate 2 is supported thereon by the supporting tray 104. Two counterweight plates 2 stacked on each other are arranged on the top of the supporting tray 104. Different counterweight plates 2 are applied to the hydraulic oil below the lifting piston 101 through the counterweight plates 2. The bottom end of the piston cylinder sleeve 1 is fixed with an oil delivery chamber 106, and the hydraulic oil is transferred to the piston cylinder sleeve 1 through the oil delivery chamber 106. A three-way valve 3 is arranged on one side of the oil delivery chamber 106, and the oil delivery function is controlled by the three-way valve 3. The end of the three-way valve 3 away from the oil delivery chamber 106 is fixedly connected with a bypass pipe 301, and when the bypass pipe 301 works, it is connected with the pipeline returning to the liquid. The upper part of the peripheral side of the bypass pipe 301 is fixedly connected with a delivery pipe 302, and when the delivery pipe 302 works, the oil in the bypass pipe 301 is delivered to the connecting sleeve 4. The top of the delivery pipe 302 is fixedly connected with the connecting sleeve 4. After the oil enters the connecting sleeve 4, the push switch 501 at the bottom of the timer 5 is pressed to start timing. The top of the connecting sleeve 4 is fixed with a timer 5, and the oil delivery time is determined by the timer 5.
[0027] Specifically, the piston cylinder sleeve 1 is fixed at the top center of the oil delivery chamber 106, and an oil delivery hole 107 is opened at the top center of the oil delivery chamber 106. The inner diameter of the oil delivery hole 107 is smaller than the inner diameter of the piston cylinder sleeve 1. The peripheral side of the piston rod 102 is printed with a printed scale 103. The oil delivery chamber 106 is connected with the piston cylinder sleeve 1 through the oil delivery hole 107. The piston rod 102 determines the change in the hydraulic oil content in the piston cylinder sleeve 1 by the change in the corresponding indication of the printed scale 103 extending out of the piston cylinder sleeve 1 before and after work.
[0028] Furthermore, an insertion rod 105 is fixed at the center of the top of the support tray 104, and a hole 201 is opened along the central axis in each counterweight plate 2, and a second insertion rod 202 is fixed to the upper part of the hole 201 on each counterweight plate 2. The insertion rod 105 is inserted into the hole 201 on the counterweight plate 2 located below, and the second insertion rod 202 is inserted into the hole 201 on the counterweight plate 2 located above. The counterweight plate 2 is positioned on the support tray 104 by inserting the insertion rod 105 into the hole 201 on the counterweight plate 2 located below, and then the counterweight plate 2 located above is placed on the counterweight plate 2 located below by aligning the insertion rod 202 on the counterweight plate 2 located below with the hole 201 on the counterweight plate 2 located above, so that the two counterweight plates 2 are combined together and supported on the support tray 104.
[0029] The operation process of this embodiment is as follows: when working, first determine the load required for the hydraulic oil to work, then select a suitable number of counterweight plates 2, insert the insertion rod 105 into the insertion hole 201 on the counterweight plate 2 located below, so that the counterweight plate 2 is positioned on the support tray 104, and then align the insertion rod 202 on the counterweight plate 2 located below with the insertion hole 201 on the counterweight plate 2 located above, and place the counterweight plate 2 located above on the counterweight plate 2 located below. After repeating the work, multiple counterweight plates 2 are combined together and supported on the support tray 104, and then work can be started. When working, the oil is transported to the oil delivery chamber 106 through the fixed pipe 303, and then transported to the piston cylinder sleeve 1 through the oil delivery hole 107 on the oil delivery chamber 106, pushing the lifting piston 101 to rise and fall, and the oil flow rate of the oil at a given time is determined by the front and rear changes of the printed scale 103 on the piston rod 102. After comparing with the measured part, it is determined whether the flow rate measured by the measured part is accurate. Specific embodiment 2
[0030] See also Figure 1 , 4 , 5, 6, on the basis of the specific embodiment 1, one end of the three-way valve 3 close to the oil delivery chamber 106 is fixedly connected with a fixed pipe 303, and one end of the fixed pipe 303 away from the three-way valve 3 is fixedly connected with the oil delivery chamber 106. When the three-way valve 3 is working, it is connected with the oil delivery chamber 106 through the fixed pipe 303, and the end of the vertical part of the three-way valve 3 is connected with the oil passage to be detected.
[0031] Specifically, a pushing piston 402 is movably connected in the connecting sleeve 4, a pushing rod 403 is fixed to the top of the pushing piston 402, and a movable hole 401 is opened in the center of the top of the connecting sleeve 4. When the connecting sleeve 4 is working, the oil passing through the bypass pipe 301 enters the delivery pipe 302, and is delivered to the connecting sleeve 4 through the delivery pipe 302, pushing the pushing piston 402 in the connecting sleeve 4 to rise, driving the pushing rod 403 to rise into the movable hole 401.
[0032] Furthermore, a push switch 501 is fixed at the bottom end of the timer 5, and the push switch 501 is set in the movable hole 401. When the push rod 403 rises into the movable hole 401, the push switch 501 is pressed to stop the timing of the push switch 501. When the oil changes its flow direction and does not pass through the bypass pipe 301, the oil is transported back to the bypass pipe 301 in the connecting sleeve 4. At this time, the push rod 403 releases the push switch 501, and the timer 5 starts timing.
[0033] The operation process of this embodiment is as follows: when working, firstly, the three-way valve 3 is adjusted to allow the oil to be transported to the bypass pipe 301, and then the oil is input into the bypass pipe 301, and then transported to the return pipeline through the bypass pipe 301. At this time, the oil passing through the bypass pipe 301 enters the delivery pipe 302, and is transported to the connecting sleeve 4 through the delivery pipe 302, pushing the push piston 402 in the connecting sleeve 4 to rise, driving the push rod 403 to rise to the active hole 401, and when the push rod 403 rises to the active hole 401, the press switch 50 is pressed. 1, then adjust the timer 5 to zero again. When the oil flow is stable, turn the hand wheel of the three-way valve 3 to change the flow direction and deliver it to the fixed pipe 303. The oil is delivered back to the bypass pipe 301 in the connecting sleeve 4. At this time, the push rod 403 releases the pressing switch 501, the timer 5 starts timing, and the external detected flow meter starts working at the same time. When the given time is reached, readjust the three-way valve 3 so that the oil is delivered to the bypass pipe 301, and the push rod 403 presses the pressing switch 501 to stop the timer 5 and stop the oil from being delivered to the oil delivery chamber 106.
[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A hydraulic oil flow standard device, comprising a piston cylinder sleeve (1), a counterweight plate (2), a three-way valve (3), a connecting sleeve (4) and a timer (5), characterized in that: A lifting piston (101) is movably connected inside the piston cylinder sleeve (1), a piston rod (102) is fixed at the top of the lifting piston (101), the piston rod (102) is movably connected to the top of the piston cylinder sleeve (1), a support tray (104) is fixed at the top of the piston rod (102), two counterweight plates (2) stacked on each other are arranged at the top of the support tray (104), an oil delivery chamber (106) is fixed at the bottom of the piston cylinder sleeve (1), a three-way valve (3) is arranged on one side of the oil delivery chamber (106), a bypass pipe (301) is fixedly connected at one end of the three-way valve (3) away from the oil delivery chamber (106), a delivery pipe (302) is fixedly connected at the upper part of the circumferential side of the bypass pipe (301), a connecting sleeve (4) is fixedly connected at the top of the connecting sleeve (4), and a timer (5) is fixedly connected at the top of the connecting sleeve (4).
2. A hydraulic oil flow standard device according to claim 1, characterized in that: The piston cylinder sleeve (1) is fixed at the top center of the oil delivery chamber (106); an oil delivery hole (107) is opened at the top center of the oil delivery chamber (106); the inner diameter of the oil delivery hole (107) is smaller than the inner diameter of the piston cylinder sleeve (1); and a printed scale (103) is printed on the circumference of the piston rod (102).
3. A hydraulic oil flow standard device according to claim 1, characterized in that: A first insertion rod (105) is fixed at the center of the top of the support tray (104), and a plug hole (201) is opened along the central axis in each of the counterweight plates (2), and a second insertion rod (202) is fixed in the upper part of the plug hole (201) on each of the counterweight plates (2), and the first insertion rod (105) is plugged into the plug hole (201) on the counterweight plate (2) located below, and the second insertion rod (202) is plugged into the plug hole (201) on the counterweight plate (2) located above.
4. A hydraulic oil flow standard device according to claim 1, characterized in that: One end of the three-way valve (3) close to the oil delivery chamber (106) is fixedly connected to a fixed pipe (303), and one end of the fixed pipe (303) away from the three-way valve (3) is fixedly connected to the oil delivery chamber (106).
5. A hydraulic oil flow standard device according to claim 1, characterized in that: A pushing piston (402) is movably connected inside the connecting sleeve (4), a pushing rod (403) is fixed to the top end of the pushing piston (402), and a movable hole (401) is provided at the center of the top end of the connecting sleeve (4).
6. A hydraulic oil flow standard device according to claim 5, characterized in that: A push switch (501) is fixed to the bottom end of the timer (5), and the push switch (501) is arranged in the movable hole (401).