CN110595743B - Distance adjusting test tool for shaft type oil distributor - Google Patents
Distance adjusting test tool for shaft type oil distributor Download PDFInfo
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- CN110595743B CN110595743B CN201910704206.5A CN201910704206A CN110595743B CN 110595743 B CN110595743 B CN 110595743B CN 201910704206 A CN201910704206 A CN 201910704206A CN 110595743 B CN110595743 B CN 110595743B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a distance adjusting test tool for a shaft type oil distributor, which comprises a driving system and a hydraulic system, wherein the driving system is connected with the hydraulic system through a connecting rod; the driving system comprises a cylinder body, a piston and a piston rod, the piston is slidably inserted into the cylinder body so as to divide the cylinder body into a vehicle-driving oil cavity and a vehicle-backing oil cavity, one end of the piston rod is positioned in the vehicle-driving oil cavity and fixed on one side of the piston, and the other end of the piston rod penetrates through the cylinder body and is coaxially fixed with an inner oil pipe of the shaft-type oil distributor; the hydraulic system comprises a process pump station, a forward oil pipe and a reverse oil pipe, wherein one end of the forward oil pipe is communicated with an oil outlet of the process pump station, the other end of the forward oil pipe is communicated with a forward oil cavity, one end of the reverse oil pipe is communicated with the oil outlet of the process pump station, and the other end of the reverse oil pipe is communicated with a reverse oil cavity. According to the invention, the piston rod moves in the cylinder body to drive the inner oil pipe to move, so that the working state of the inner oil pipe is simulated when the distance adjusting propeller adjusts the distance, and whether the inner oil pipe is reliable or not is tested.
Description
Technical Field
The invention belongs to the field of tool design, and particularly relates to a distance adjusting test tool for a shaft type oil distributor.
Background
The controllable pitch propeller is a propeller with adjustable pitch, and mainly comprises five parts, namely a blade, a propeller hub mechanism, an oil distributor, a hydraulic system, an electronic remote control system and the like. The oil distributor is an important part for realizing the distance adjusting function of the distance adjusting paddle, and the common oil distributor is a shaft type oil distributor generally and mainly comprises a variable-distance oil cylinder, wherein the variable-distance oil cylinder comprises a variable-distance cylinder body, a variable-distance piston, an inner oil pipe and an outer oil pipe, the variable-distance piston is arranged in the variable-distance cylinder body to divide the variable-distance oil cylinder into a forward oil cavity and a reverse oil cavity, the inner oil pipe is fixed on the variable-distance piston and is communicated with the forward oil cavity, the outer oil pipe is fixed on the variable-distance cylinder body and is sleeved outside the inner oil pipe, an annular oil passage is formed between the outer oil pipe and the inner oil pipe, and the annular oil passage is communicated with the reverse oil cavity. And hydraulic oil is respectively conveyed into the forward oil cavity and the reverse oil cavity through the inner oil pipe and the annular oil duct so as to push the variable-pitch piston to move, so that the paddle is driven to act, and the pitch of the paddle is adjustable.
It follows that the proper operation of the oil distributor is critical for the pitch controllable propeller. However, when a ship is assembled at present, the shaft type oil distributor is generally directly installed on the ship, and if the shaft type oil distributor has a problem and cannot work normally, the shaft type oil distributor needs to be detached from a ship body to be adjusted and then installed again, so that the workload is large and the working efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a distance adjusting test tool for a shaft type oil distributor, which can truly simulate and verify the functions and performances of components such as an inner oil pipe and the like in the shaft type oil distributor during distance adjustment of a distance adjusting paddle. The technical scheme is as follows:
the embodiment of the invention provides a distance adjusting test tool for a shaft type oil distributor, which comprises a driving system and a hydraulic system, wherein the driving system comprises a driving shaft, a driving shaft and a driving shaft;
the driving system comprises a cylinder body, a piston and a piston rod, the piston is slidably inserted into the cylinder body so as to divide the cylinder body into a forward oil cavity and a reverse oil cavity, one end of the piston rod is positioned in the forward oil cavity and fixed on one side of the piston, and the other end of the piston rod penetrates through the cylinder body and is coaxially fixed with an inner oil pipe of the shaft type oil distributor;
the hydraulic system comprises a process pump station, a forward oil pipe and a reverse oil pipe, wherein one end of the forward oil pipe is communicated with an oil outlet of the process pump station, the other end of the forward oil pipe is communicated with a forward oil cavity, one end of the reverse oil pipe is communicated with the oil outlet of the process pump station, and the other end of the reverse oil pipe is communicated with a reverse oil cavity.
In one implementation manner of the invention, the driving system further comprises a control rod, one end of the control rod is positioned in the reversing oil cavity and fixed on the other side of the piston, and the other end of the control rod extends out of the reversing oil cavity.
In another implementation manner of the present invention, the cylinder body includes a cylinder body, a first cylinder head and a second cylinder head, the first cylinder head is hermetically installed at one end of the cylinder body, the first cylinder head is sleeved on the piston rod, the second cylinder head is hermetically installed at the other end of the cylinder body, and the second cylinder head is sleeved on the control rod.
In another implementation manner of the invention, a mounting flange is arranged on the side, facing away from the cylinder body, of the first cylinder head, the mounting flange is sleeved on the piston rod, and the mounting flange is used for being fixedly mounted with a shell of the shaft type oil distributor.
In another implementation manner of the invention, the first cylinder head peripheral wall is provided with a flange, one side of the flange abuts against the cylinder body, and the second cylinder head is provided with a boss at the side close to the shaft type oil distributor, and the boss abuts against the cylinder body.
In another implementation manner of the present invention, the distance adjustment test tool further includes an end cover, the end cover is sleeved on the piston rod, one side of the end cover is fixedly installed with the mounting flange, and the other end of the end cover is used for being fixedly installed with the housing of the shaft type oil distributor.
In another implementation manner of the present invention, a forward oil pipe joint and a reverse oil pipe joint are arranged on the cylinder body, an oil inlet of the forward oil pipe joint is communicated with the other end of the forward oil pipe, an oil outlet of the forward oil pipe joint is communicated with the forward oil chamber, an oil inlet of the reverse oil pipe joint is communicated with the other end of the reverse oil pipe, and an oil outlet of the forward oil pipe joint is communicated with the reverse oil chamber.
In another implementation manner of the present invention, the hydraulic system further includes a forward pressure gauge and a reverse pressure gauge, the forward pressure gauge is communicated with the forward oil pipe through a pressure gauge joint, and the reverse pressure gauge is communicated with the reverse oil pipe through a pressure gauge joint.
In another implementation manner of the invention, the other end of the piston rod is provided with a screw hole for inserting an assembling bolt on an inner oil pipe of the shaft type oil distributor.
In yet another embodiment of the present invention, the peripheral wall of the control rod is provided with two opposite mounting grooves along the length direction thereof near the other end.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
when the distance adjusting test tool for the shaft type oil distributor provided by the embodiment of the invention is used for carrying out the distance adjusting test on the shaft type oil distributor, one end of the piston rod is fixed with the inner oil pipe of the shaft type oil distributor, then pressure oil is introduced into the forward oil cavity or the reverse oil cavity through the process pump station, and the piston moves in the cylinder body to drive the inner oil pipe in the oil pipe assembly in the shaft type oil distributor to move, so that the working state of the inner oil pipe in the shaft type oil distributor when the distance of the distance adjusting paddle is changed is simulated, and the working state of the shaft type oil distributor is conveniently detected. When pressure oil is introduced into the positive oil cavity, the piston drives the inner oil pipe to move away from the shaft type oil distributor, and whether the movement of the inner oil pipe is reliable or not is tested by giving different pressure oil; in addition, when pressure oil is introduced into the reversing oil cavity, the piston drives the inner oil pipe to move close to the shaft type oil distributor, and whether the movement of the inner oil pipe is reliable or not is tested by giving different pressure oil. In other words, the distance adjusting test tool provided by the embodiment of the invention can be used for testing the shaft type oil distributor before the shaft type oil distributor is assembled on a ship, namely, the shaft type oil distributor is tested, so that the repeated debugging of the shaft type oil distributor after the shaft type oil distributor is assembled on the ship is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an assembly schematic view of a distance adjustment test tool provided by an embodiment of the invention;
fig. 2 is a sectional view of a distance adjustment test tool provided in an embodiment of the present invention.
The symbols in the drawings represent the following meanings:
1. a drive system; 11. a cylinder body; 110. a barrel; 111. a first cylinder head; 1111. a flange; 1112. installing a flange; 112. a second cylinder head; 1121. a boss; 113. an end cap; 1131. mounting holes; 1132. connecting holes; 114. turning an oil pipe joint; 115. a reversing oil pipe joint; 12. a piston; 13. a piston rod; 14. a control lever; 2. a hydraulic system; 21. a process pump station; 22. turning an oil pipe; 23. a reversing oil pipe; 24. a vehicle pressure gauge is arranged; 25. a backing pressure gauge; 101. a positive vehicle oil chamber; 102. a reversing oil cavity; 200. a shaft type oil distributor; 201. an oil distribution shaft; 202. an oil distribution ring; 203. an inner oil pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a distance adjusting test tool for a shaft type oil distributor, which is shown in figure 1. The shaft type oil distributor 200 comprises an oil distribution shaft 201, an oil distribution ring 202 coaxially sleeved on the oil distribution shaft 201, and an inner oil pipe 203 arranged in the oil distribution shaft 201.
Fig. 2 is a sectional view of a distance adjusting test tool, which is combined with fig. 2, and the distance adjusting test tool for the shaft type oil distributor comprises a driving system 1 and a hydraulic system 2. The driving system 1 comprises a cylinder 11, a piston 12 and a piston rod 13, wherein the piston 12 is slidably inserted into the cylinder 11 to divide the cylinder 11 into a front oil chamber 101 and a back oil chamber 102, one end of the piston rod 13 is positioned in the front oil chamber 101 and fixed at one side of the piston 12, and the other end of the piston rod 13 passes through the cylinder 11 and is coaxially fixed with an inner oil pipe 203 of the shaft type oil distributor 200.
The hydraulic system 2 comprises a process pump station 21, a main oil pipe 22 and a reverse oil pipe 23, wherein one end of the main oil pipe 22 is communicated with an oil outlet of the process pump station 21, the other end of the main oil pipe 22 is communicated with a main oil chamber 101, one end of the reverse oil pipe 23 is communicated with an oil outlet of the process pump station 21, and the other end of the reverse oil pipe 23 is communicated with a reverse oil chamber 102.
When the distance adjusting test tool provided by the embodiment of the invention is used for carrying out the distance adjusting test on the shaft type oil distributor, one end of the piston rod is fixed with the inner oil pipe of the shaft type oil distributor, pressure oil is introduced into the forward oil cavity or the backward oil cavity through the process pump station, and the inner oil pipe of the shaft type oil distributor is driven to move through the movement of the piston in the cylinder body, so that the working state of the inner oil pipe of the shaft type oil distributor when the distance adjusting paddle is changed is simulated, and the working state of the shaft type oil distributor is conveniently detected. When pressure oil is introduced into the positive oil cavity, the piston drives the inner oil pipe to move away from the shaft type oil distributor, and whether the movement of the inner oil pipe is reliable or not is tested by giving different pressure oil; in addition, when pressure oil is introduced into the reversing oil cavity, the piston drives the inner oil pipe to move close to the shaft type oil distributor, and whether the movement of the inner oil pipe is reliable or not is tested by giving different pressure oil. In other words, the distance adjusting test tool provided by the embodiment of the invention can be used for testing the shaft type oil distributor before the shaft type oil distributor is assembled on a ship, namely, the shaft type oil distributor is tested, so that the repeated debugging of the shaft type oil distributor after the shaft type oil distributor is assembled on the ship is avoided.
Optionally, the piston 12 is circumferentially provided with an O-ring.
In the implementation manner, the use of the O-ring can effectively ensure the sealing performance between the piston 12 and the cylinder body 11, and further ensure the sealing performance in the forward oil chamber 101 and the reverse oil chamber 102.
Optionally, the other end of the piston rod 13 is provided with a threaded hole for inserting a mounting bolt on the inner oil pipe 203 of the shaft type oil distributor 200.
In the above implementation, the above arrangement facilitates the assembly of the piston rod 13 with the inner oil pipe 203 of the shaft oil distributor 200.
Optionally, the drive system 1 further comprises a control rod 14, one end of the control rod 14 is positioned in the reverse oil chamber 102 and fixed on the other side of the piston 12, the other end of the control rod 14 extends out of the reverse oil chamber 102,
in the implementation manner, since the piston rod 13 is assembled with the inner oil pipe 203 in the shaft type oil distributor 200 by a thread, the control rod 14 is convenient to adjust the connection relationship between the piston rod 13 and the inner oil pipe 203 in the shaft type oil distributor 200, the piston rod 13 and the inner oil pipe can be fixedly connected by rotating the control rod 14 clockwise, and the piston rod 13 and the inner oil pipe can be separated by rotating the control rod 14 counterclockwise.
Alternatively, the peripheral wall of the control rod 14 is provided with two opposed mounting slots along its length adjacent the other end.
The mounting groove is provided to facilitate connection of the control rod 14 to a tool such as another handle, which facilitates rotation of the control rod 14 to adjust the connection between the piston rod 13 and the inner oil pipe 203 of the oil distributor 200.
Alternatively, the cylinder 11 includes a cylinder body 110, a first cylinder head 111 and a second cylinder head 112, the first cylinder head 111 is hermetically installed at one end of the cylinder body 110, the first cylinder head 111 is sleeved on the piston rod 13, the second cylinder head 112 is hermetically installed at the other end of the cylinder body 110, and the second cylinder head 112 is sleeved on the control rod 14.
In the above implementation manner, the cylinder body 110, the first cylinder head 111 and the second cylinder head 112 may form a closed space, so that a closed chamber is formed inside the cylinder body 11, and pressure oil is input into the closed chamber, thereby ensuring that the pressure oil does not leak out, and further ensuring that the pressure value in the forward oil chamber or the reverse oil chamber does not affect the test result due to the problem of the cylinder body 11 when the test is performed.
Illustratively, the outer peripheral wall of the first cylinder head 111 is provided with a flange 1111, and one side of the flange 1111 abuts against the cylinder body 110.
In the above implementation, the above arrangement facilitates assembly of the cylinder body 110 with the first cylinder head 111 while forming a closed positive vehicle oil chamber inside the cylinder block 11.
In this embodiment, the flange 1111 is circumferentially provided with fixing holes for fastening the first cylinder head 111 and the cylinder block 11 together by screws.
Optionally, an O-ring is circumferentially disposed between the first cylinder head 111 and the cylinder body 110.
In the implementation manner, the arrangement of the O-ring can effectively ensure the sealing property between the first cylinder head 111 and the cylinder body 110, and further ensure the sealing property of the main oil chamber 101.
Optionally, a mounting flange 1112 is disposed on a side of the first cylinder head 111 facing away from the cylinder 110, the mounting flange 1112 is sleeved on the piston rod 13, and the mounting flange 1112 is configured to be fixedly mounted with a housing of the oil distributor 200.
In the above implementation, the above arrangement facilitates securing the cylinder 11 with the shaft oil distributor via the mounting flange 1112.
Optionally, a boss 1121 is disposed on one side of the second cylinder head 112 close to the shaft-type oil distributor, and the boss 1121 abuts on the cylinder 110.
In the above implementation, the above arrangement facilitates assembly of the cylinder body 110 with the second cylinder head 112 while forming a closed reversing oil chamber inside the cylinder block 11.
Illustratively, an O-ring is disposed between the inner peripheral wall of the second cylinder head 112 and the control rod 14. An O-shaped ring is arranged between the outer peripheral wall of the boss 1121 and the cylinder 110.
In the above implementation, the use of the O-ring can effectively ensure the sealing performance between the control rod 14 and the second cylinder head 112 and between the cylinder body 110 and the second cylinder head.
Optionally, the distance adjustment test tool further comprises an end cover 113, the end cover 113 is sleeved on the piston rod 13, one side of the end cover 113 is fixedly mounted with the mounting flange 1112, and the other end of the end cover 113 is used for fixedly mounting with the housing of the shaft oil distributor 200.
In the above implementation, the above arrangement facilitates securing the cylinder 11 with the shaft distributor via the end cap 113.
Illustratively, the end cover 113 has a hollow cylindrical plate shape, and the end cover 113 is circumferentially provided with a mounting hole 1131 and a connecting hole 1132.
The mounting holes 1131 are used for fixedly assembling with the end face of the shaft type oil distributor through screws, and the connecting holes 1132 are used for fixedly assembling the end cover 113 and the first cylinder head 111 together through screws and the mounting flange 1112.
Optionally, a main oil pipe joint 114 and a reverse oil pipe joint 115 are respectively arranged on the circumferential wall of the cylinder block 11, an oil inlet of the main oil pipe joint 114 is communicated with the other end of the main oil pipe 22, an oil outlet of the main oil pipe joint 114 is communicated with the main oil chamber 101, an oil inlet of the reverse oil pipe joint 115 is communicated with the other end of the reverse oil pipe 23, and an oil outlet of the main oil pipe joint 114 is communicated with the reverse oil chamber 102.
In the above implementation, the main oil pipe joint 114 and the reverse oil pipe joint 115 are respectively used for communicating with a corresponding main oil pipe and a corresponding reverse oil pipe to introduce pressure oil into the main oil chamber 101 or the reverse oil chamber 102.
Illustratively, a front oil pipe joint 114 and a back oil pipe joint 115 are provided near both end positions on the circumferential wall of the cylinder block 11. The main oil pipe joint 114 and the reverse oil pipe joint 115 are arranged at the position, close to the end, of the cylinder body 11, so as to ensure that the piston rod 13 and the piston 12 move in the cylinder body 11, so that pressure oil can be introduced into both the main oil chamber 101 and the reverse oil chamber 102, and pressure oil cannot be introduced into the main oil chamber 101 or the reverse oil chamber 102 because the main oil pipe joint 114 and the reverse oil pipe joint 115 are blocked due to the movement of the piston 12 in the position of the cylinder body 11.
Optionally, the hydraulic system 2 further includes a forward pressure gauge 24 and a reverse pressure gauge 25, the forward pressure gauge 24 is connected to the forward oil pipe 22 through a pressure gauge joint, and the reverse pressure gauge 25 is connected to the reverse oil pipe 23 through a pressure gauge joint.
In the above implementation manner, the vehicle-righting pressure gauge 24 facilitates observation of the pressure value of the hydraulic oil input into the vehicle-righting oil chamber 101, so as to correspondingly know the pressure given to the piston 12, and finally know the movement of the inner oil pipe 203 corresponding to the pressure value when the shaft type oil distributor is correspondingly righted. The reverse pressure gauge 25 is convenient for observing the pressure value of the hydraulic oil input into the reverse oil cavity 102, so that the pressure given to the piston 12 can be correspondingly known, and finally the movement condition of the inner oil pipe 203 corresponding to the pressure value can be known when the shaft type oil distributor correspondingly reverses.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The distance adjusting test tool for the shaft type oil distributor is characterized by comprising a driving system (1) and a hydraulic system (2);
the driving system (1) comprises a cylinder body (11), a piston (12), a piston rod (13) and a control rod (14), wherein the piston (12) is slidably inserted into the cylinder body (11) to divide the cylinder body (11) into a vehicle-driving oil chamber (101) and a vehicle-backing oil chamber (102), one end of the piston rod (13) is positioned in the vehicle-driving oil chamber (101) and fixed on one side of the piston (12), the other end of the piston rod (13) penetrates through the cylinder body (11) and is coaxially fixed with an inner oil pipe of a shaft-type oil distributor (200) in a threaded manner, one end of the control rod (14) is positioned in the vehicle-backing oil chamber (102) and fixed on the other side of the piston (12), the other end of the control rod (14) extends out of the vehicle-backing oil chamber (102), and the control rod (14) is used for adjusting the connection relationship between the piston rod (13) and the inner oil pipe (203) in the shaft-type oil distributor (200) through the rotation of the control rod (14), cylinder body (11) includes barrel (110), first cylinder end (111), second cylinder end (112) and end cover (113), first cylinder end (111) seal installation be in the one end of barrel (110), first cylinder end (111) suit is in on piston rod (13), second cylinder end (112) seal installation be in the other end of barrel (110), second cylinder end (112) suit is in control lever (14), the periphery wall of piston (12) with sliding seal cooperation between the inner wall of barrel (110), dorsad of first cylinder end (111) one side of barrel (110) is provided with mounting flange (1112), mounting flange (1112) suit is in on piston rod (13), end cover (113) suit is in on piston rod (13), one side of end cover (113) with mounting flange (1112) fixed mounting together, the other side of the end cover (113) is fixedly arranged with the shell of the shaft type oil distributor (200);
the hydraulic system (2) comprises a process pump station (21), a main oil pipe (22) and a backing oil pipe (23), one end of the main oil pipe (22) is communicated with an oil outlet of the process pump station (21), the other end of the main oil pipe (22) is communicated with the main oil cavity (101), one end of the backing oil pipe (23) is communicated with the oil outlet of the process pump station (21), and the other end of the backing oil pipe (23) is communicated with the backing oil cavity (102);
the cylinder body (11) is further provided with a forward oil pipe joint (114) and a reverse oil pipe joint (115), an oil inlet of the forward oil pipe joint (114) is communicated with the other end of the forward oil pipe (22), an oil outlet of the forward oil pipe joint (114) is communicated with the forward oil chamber (101), an oil inlet of the reverse oil pipe joint (115) is communicated with the other end of the reverse oil pipe (23), an oil outlet of the forward oil pipe joint (114) is communicated with the reverse oil chamber (102), the forward oil pipe joint (114) is located at one end of the peripheral wall of the cylinder body (11), and the reverse oil pipe joint (115) is located at the other end of the peripheral wall of the cylinder body (11);
the process pump station (21) is used for introducing pressure oil into the forward oil pipe joint (114) or the reverse oil pipe joint (115) to drive the piston (12) to move in the cylinder (110) and drive an inner oil pipe in an oil pipe assembly in the shaft type oil distributor to move freely.
2. The distance adjusting test tool according to claim 1, characterized in that a flange (1111) is arranged on the peripheral wall of the first cylinder head (111), one side of the flange (1111) abuts against the cylinder body (110), a boss (1121) is arranged on one side of the second cylinder head (112) close to the shaft type oil distributor (200), and the boss (1121) abuts against the cylinder body (110).
3. The distance adjusting test tool according to claim 1, wherein the hydraulic system (2) further comprises a forward pressure gauge (24) and a reverse pressure gauge (25), the forward pressure gauge (24) is communicated with the forward oil pipe (22) through a pressure gauge joint, and the reverse pressure gauge (25) is communicated with the reverse oil pipe (23) through a pressure gauge joint.
4. The distance adjusting test tool according to claim 1, wherein a screw hole is formed in the other end of the piston rod (13) and used for being inserted with an assembling bolt on an inner oil pipe (203) of the shaft type oil distributor (200).
5. The roll adjustment test tool according to claim 1, wherein the peripheral wall of the control rod (14) is provided with two opposite mounting grooves along the length direction thereof near the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910704206.5A CN110595743B (en) | 2019-07-31 | 2019-07-31 | Distance adjusting test tool for shaft type oil distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910704206.5A CN110595743B (en) | 2019-07-31 | 2019-07-31 | Distance adjusting test tool for shaft type oil distributor |
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| Publication Number | Publication Date |
|---|---|
| CN110595743A CN110595743A (en) | 2019-12-20 |
| CN110595743B true CN110595743B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910704206.5A Active CN110595743B (en) | 2019-07-31 | 2019-07-31 | Distance adjusting test tool for shaft type oil distributor |
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| CN (1) | CN110595743B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906213A (en) * | 1989-04-18 | 1990-03-06 | Bird-Johnson Company | Apparatus for detecting the pitch of a marine controllable pitch propeller |
| CN104675789A (en) * | 2013-11-29 | 2015-06-03 | 比亚迪股份有限公司 | Hydraulic oil cylinder, hydraulic device and forklift |
| CN109916606A (en) * | 2019-01-23 | 2019-06-21 | 武汉船用机械有限责任公司 | Shaft-type oil distributor reliability test system |
-
2019
- 2019-07-31 CN CN201910704206.5A patent/CN110595743B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906213A (en) * | 1989-04-18 | 1990-03-06 | Bird-Johnson Company | Apparatus for detecting the pitch of a marine controllable pitch propeller |
| CN104675789A (en) * | 2013-11-29 | 2015-06-03 | 比亚迪股份有限公司 | Hydraulic oil cylinder, hydraulic device and forklift |
| CN109916606A (en) * | 2019-01-23 | 2019-06-21 | 武汉船用机械有限责任公司 | Shaft-type oil distributor reliability test system |
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| CN110595743A (en) | 2019-12-20 |
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