CN110294065B - Load test tool - Google Patents
Load test tool Download PDFInfo
- Publication number
- CN110294065B CN110294065B CN201910358446.4A CN201910358446A CN110294065B CN 110294065 B CN110294065 B CN 110294065B CN 201910358446 A CN201910358446 A CN 201910358446A CN 110294065 B CN110294065 B CN 110294065B
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- piston rod
- cylinder
- connecting piece
- load test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a load test tool, and belongs to the field of test equipment. The hydraulic cylinder comprises a cylinder body and a cylinder head, wherein one end of the cylinder body is connected with the cylinder head, the other end of the cylinder body is sealed, a first connecting hole used for installing the first connecting piece is formed in the cylinder head, and the first connecting hole is formed in the direction perpendicular to the axis of the cylinder body; one end of the piston rod is arranged in the cylinder body to divide the interior of the cylinder body into a rod cavity and a rodless cavity, the other end of the piston rod penetrates through the other end of the cylinder body and is arranged outside the cylinder body, the joint is detachably connected with the other end of the piston rod, a second connecting hole for mounting a second connecting piece is formed in the joint, and the second connecting hole is formed in the direction perpendicular to the axis of the cylinder body; the cylinder body is provided with a first oil port and a second oil port, the first oil port is communicated with the rod cavity, and the second oil port is communicated with the rodless cavity. The load test tool provided by the invention can improve the test efficiency of the load test and reduce noise pollution at the same time.
Description
Technical Field
The invention relates to the field of test equipment, in particular to a load test tool.
Background
With the increasingly fierce competition of the ship market and the increasing demand of high-quality ship corollary equipment, the ship corollary equipment needs to be subjected to delivery tests before being delivered to a ship factory, a load test is one of the most important test items, and whether the performance of the equipment meets the design requirements can be verified.
The existing load test equipment comprises a motor, a pump control device, a hydraulic valve bank, a mechanical link mechanism and the like, wherein the mechanical link mechanism is connected with a device to be tested, the pump control device converts electric energy of the motor into hydraulic energy, and the hydraulic energy is converted into mechanical energy through the hydraulic valve bank and the mechanical link mechanism so as to simulate seawater load and carry out load test on the device to be tested.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the existing load test equipment has a complex structure and more energy transfer processes, so that the test efficiency is low, and the motor can generate noise pollution.
Disclosure of Invention
The embodiment of the invention provides a load test tool which can improve the test efficiency of a load test and reduce noise pollution. The technical scheme is as follows:
the invention provides a load test tool which comprises an oil cylinder, a piston rod, a joint, a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are used for being connected with a device to be tested; one end of the piston rod is arranged in the cylinder body, the inner part of the cylinder body is divided into a rod cavity and a rodless cavity, the other end of the piston rod penetrates through the other end of the cylinder body and is arranged outside the cylinder body, the joint is detachably connected with the other end of the piston rod, a second connecting hole used for installing the second connecting piece is formed in the joint, and the second connecting hole is formed in the direction perpendicular to the axis direction of the cylinder body; the cylinder body is provided with a first oil port and a second oil port, the first oil port is communicated with the rod cavity, and the second oil port is communicated with the rodless cavity.
Further, the other end of cylinder body is equipped with end cover, end cover connecting piece and first movable sealing element, the end cover is established outside the other end of piston rod, the end cover pass through the end cover connecting piece with the other end fixed connection of cylinder body, first movable sealing element sets up the end cover with between the other end of piston rod.
Furthermore, a dustproof ring is arranged between the end cover and the other end of the piston rod.
Further, the other end of cylinder body is equipped with an annular groove, the load test frock still includes supporting seat and uide bushing, the uide bushing cover is established outside the other end of piston rod, the supporting seat cover is established outside the uide bushing, just the one end of supporting seat be equipped with annular groove assorted annular is protruding.
Further, a first static sealing element is arranged between the supporting seat and the end cover.
Further, a second static sealing element is arranged between the supporting seat and the cylinder body.
Further, interference fit is carried out between the supporting seat and the guide sleeve.
Further, a second dynamic sealing element is arranged between the piston rod and the cylinder body.
Further, the load test tool further comprises a first air release valve and a second air release valve, the first air release valve is arranged at one end of the cylinder body and communicated with the rod cavity, and the second air release valve is arranged at the other end of the cylinder body and communicated with the rodless cavity.
Furthermore, the first connecting piece and the second connecting piece are pin shafts, and the first connecting hole and the second connecting hole are pin shaft connecting holes.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
one end of the device to be tested is connected with the cylinder head through the first connecting piece, the other end of the device to be tested is connected with the other end of the piston rod through the second connecting piece, then the first oil port and the second oil port are connected with the oil tank, and the pressure of the set oil tank is kept stable so as to simulate seawater load. When waiting that the test device provides the pulling force, connect can transmission moment, pulling piston rod for there is the pole chamber place orientation to remove in the one end of piston rod orientation in the cylinder body, no pole intracavity forms the vacuum this moment, and the second hydraulic fluid port can be automatic inhales the hydraulic oil in the oil tank, and perhaps the one end of piston rod removes in the direction of no pole chamber place orientation in the cylinder body, has the pole intracavity to form the vacuum this moment, and first hydraulic fluid port can be automatic inhales the hydraulic oil in the oil tank, then is full of hydraulic oil in the cylinder body all the time. The oil tank only needs to keep stable pressure and is sealed, and an additional power source is not needed, so that stable pressure load can be provided for the device to be tested, and the performance of the device to be tested is verified. The testing device provided by the invention can be directly and fixedly connected with a device to be tested, does not need to be installed and fixed at other positions, and is convenient to use. Compared with the existing load realization tool, the load realization tool is simple in structure, less in capacity transfer process, convenient to operate, free of using a motor, and capable of improving the test efficiency of a load test and reducing noise pollution.
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 a schematic structural diagram of a load test tool according to an embodiment of the present invention;
fig. 2 is a schematic external structural diagram of an oil cylinder according to an embodiment of the present invention.
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.
Fig. 1 is a schematic structural diagram of a load test tool according to an embodiment of the present invention, and as shown in fig. 1, the load test tool includes an oil cylinder 10, a piston rod 20, a joint 30, and a first connecting member and a second connecting member (not shown in the figure) for connecting to a device to be tested.
The oil cylinder 10 comprises a cylinder body 11 and a cylinder head 12, one end of the cylinder body 11 is connected with the cylinder head 12, the other end of the cylinder body 11 is sealed, a first connecting hole 12a used for installing a first connecting piece is formed in the cylinder head 12, and the first connecting hole 12a is arranged in the axial direction perpendicular to the cylinder body 11. One end of the piston rod 20 is disposed inside the cylinder 11 to divide the inside of the cylinder 11 into a rod chamber S1 and a rodless chamber S2, and the other end of the piston rod 20 passes through the other end of the cylinder 11 and is disposed outside the cylinder 11. The joint 30 is detachably connected to the other end of the piston rod 20, and a second connection hole 30a for mounting a second connection member is provided in the joint 30, and the second connection hole 30a is provided in a direction perpendicular to the axis of the cylinder 11.
Fig. 2 is an external structural schematic diagram of an oil cylinder according to an embodiment of the present invention, and as shown in fig. 2, a first oil port 11a and a second oil port 11b are provided in a cylinder body 11, the first oil port 11a is communicated with a rod chamber S1, and the second oil port 11b is communicated with a rodless chamber S2.
In the embodiment of the invention, one end of the device to be tested is connected with the cylinder head through the first connecting piece, the other end of the device to be tested is connected with the other end of the piston rod through the second connecting piece, then the first oil port and the second oil port are connected with the oil tank, and the pressure of the oil tank is set to be stable so as to simulate the seawater load. When waiting that the test device provides the pulling force, connect can transmission moment, pulling piston rod for there is the pole chamber place orientation to remove in the one end of piston rod orientation in the cylinder body, no pole intracavity forms the vacuum this moment, and the second hydraulic fluid port can be automatic inhales the hydraulic oil in the oil tank, and perhaps the one end of piston rod removes in the direction of no pole chamber place orientation in the cylinder body, has the pole intracavity to form the vacuum this moment, and first hydraulic fluid port can be automatic inhales the hydraulic oil in the oil tank, then is full of hydraulic oil in the cylinder body all the time. The oil tank only needs to keep stable pressure and is sealed, and an additional power source is not needed, so that stable pressure load can be provided for the device to be tested, and the performance of the device to be tested is verified. The testing device provided by the invention can be directly and fixedly connected with a device to be tested, does not need to be installed and fixed at other positions, and is convenient to use. Compared with the existing load realization tool, the load realization tool is simple in structure, less in capacity transfer process, convenient to operate, free of using a motor, and capable of improving the test efficiency of a load test and reducing noise pollution.
In this embodiment, the first and second connectors may be pin shafts, and the first and second connection holes 12a and 30a may be pin shaft connection holes. Through adopting round pin hub connection, be favorable to waiting the quick installation of test device and between the load test frock to dismantle to be favorable to improving load test's test efficiency.
Optionally, the joint 30 is threadedly coupled to the other end of the piston rod 20 to secure the coupling between the joint 30 and the piston rod 20.
It should be noted that, in this embodiment, the load testing device provided by the present invention can be used for performing load tests on devices to be tested with different sizes by replacing the joints 30 with different sizes or the piston rods 20 with different lengths.
Further, the other end of the cylinder 11 is provided with an end cover 13, an end cover connecting piece 14 and a first dynamic sealing piece 15, the end cover 13 is sleeved outside the other end of the piston rod 20, the end cover 13 is fixedly connected with the other end of the cylinder 11 through the end cover connecting piece 14, and the first dynamic sealing piece 15 is arranged between the end cover 13 and the other end of the piston rod 20.
Illustratively, the end cover 13 is an annular plate, a through hole matched with the other end of the piston rod 20 is formed in the middle of the end cover 13, a plurality of threaded holes are formed in the end cover 13 and are arranged at equal intervals along the circumferential direction of the end cover, the end cover connecting piece 14 is a plurality of bolts, and the plurality of bolts penetrate through the threaded holes in the end cover 13 and are fixedly connected with the cylinder body 11.
Alternatively, the first dynamic seal 15 may be a Y-shaped seal ring, and by providing the first dynamic seal 15, hydraulic oil may be prevented from leaking between the end cover 13 and the piston rod 20.
Alternatively, the end cap 13 may be made of a stainless steel material.
Optionally, a dust ring 16 is further disposed between the end cover 13 and the other end of the piston rod 20. The dust ring can prevent dust from entering the cylinder body 11 and polluting the cylinder body 11.
Further, a second dynamic seal 17 is provided between the piston rod 20 and the cylinder 11.
Alternatively, the second dynamic seal 17 may be a Y-shaped seal ring, and the rod chamber S1 and the rodless chamber S2 may be isolated from each other by providing the second dynamic seal 17.
Further, the other end of the cylinder 11 is provided with an annular groove (not shown in the figure), the load test tool further comprises a supporting seat 41 and a guiding sleeve 42, the guiding sleeve 42 is sleeved outside the other end of the piston rod 20, the supporting seat 41 is sleeved outside the guiding sleeve 42, and one end of the supporting seat 41 is provided with an annular protrusion 411 matched with the annular groove. By disposing the annular protrusion 411 in the annular groove, the axial movement of the supporting seat 41 along the cylinder 11 can be limited, and the guiding sleeve 42 can play a guiding role, and cooperate with the supporting seat 41 to limit the radial movement of the piston rod 20 along the cylinder 11, so that the piston rod 20 can move along the axial direction of the cylinder 11.
In this embodiment, the support seat 41 and the guide sleeve 42 are in an interference fit. The guide sleeve 42 is a copper casting, and the guide sleeve 42 is sleeved in the support seat 41 by utilizing the principle of expansion with heat and contraction with cold. To prevent thermal distortion, the cold sleeve may be stress relieved and then finish machined into the inner bore of the guide sleeve 42.
Alternatively, the support base 41 may be made of a stainless steel material.
Further, a first static seal 51 is provided between the support base 41 and the end cap 13. A second static seal 52 is provided between the support base 41 and the cylinder 11.
Alternatively, the first and second static seals 51, 52 may be O-rings.
Further, the load test tool further comprises a first air release valve 61 and a second air release valve 62, wherein the first air release valve 61 is arranged at one end of the cylinder 11 and communicated with the rod cavity S1, and the second air release valve 62 is arranged at the other end of the cylinder 11 and communicated with the rodless cavity S2. By providing the purge valve, air mixed in the rod chamber S1 and the rodless chamber S2 can be purged.
In the present embodiment, the first and second purge valves 61 and 62 are both provided at the top of the cylinder 11.
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 (8)
1. The load test tool is characterized by comprising an oil cylinder (10), a piston rod (20), a joint (30), a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are used for being connected with a device to be tested, the oil cylinder (10) comprises a cylinder body (11) and a cylinder head (12), one end of the cylinder body (11) is connected with the cylinder head (12), the other end of the cylinder body (11) is sealed, a first connecting hole (12a) used for installing the first connecting piece is formed in the cylinder head (12), and the first connecting hole (12a) is formed in the direction perpendicular to the axis of the cylinder body (11); one end of the piston rod (20) is arranged in the cylinder body (11) to divide the interior of the cylinder body (11) into a rod cavity S1 and a rodless cavity S2, the other end of the piston rod (20) penetrates through the other end of the cylinder body (11) and is arranged outside the cylinder body (11), the joint (30) is detachably connected with the other end of the piston rod (20), a second connecting hole (30a) used for installing the second connecting piece is formed in the joint (30), and the second connecting hole (30a) is arranged in the direction perpendicular to the axis of the cylinder body (11); a first oil port (11a) and a second oil port (11b) are arranged on the cylinder body (11), the first oil port (11a) is communicated with the rod cavity S1, the second oil port (11b) is communicated with the rodless cavity S2,
the other end of the cylinder body (11) is provided with an end cover (13), an end cover connecting piece (14) and a first movable sealing piece (15), the end cover (13) is sleeved outside the other end of the piston rod (20), the end cover (13) is fixedly connected with the other end of the cylinder body (11) through the end cover connecting piece (14), the first movable sealing piece (15) is arranged between the end cover (13) and the other end of the piston rod (20),
the other end of the cylinder body (11) is provided with an annular groove, the load test tool further comprises a supporting seat (41) and a guide sleeve (42), the guide sleeve (42) is sleeved outside the other end of the piston rod (20), the supporting seat (41) is sleeved outside the guide sleeve (42), one end of the supporting seat (41) is provided with an annular bulge (411) matched with the annular groove,
the supporting seat (41) is provided with an inner hole, the guide sleeve (42) is inserted in the inner hole, one side surface of the end cover (13) is provided with an annular protrusion extending axially, the outer diameter of the annular protrusion is the same as the inner diameter of the inner hole, the axial length of the guide sleeve (42) is smaller than that of the inner hole, so that the annular protrusion is inserted in the inner hole, the guide sleeve (42) is a cast copper part, the guide sleeve (42) is sleeved in the supporting seat (41) in a mode of expansion with heat and contraction with cold,
one end of the device to be tested is connected with the cylinder head (12) through the first connecting piece, the other end of the device to be tested is connected with the other end of the piston rod (20) through the second connecting piece, the first oil port (11a) and the second oil port (11b) are connected with an oil tank, and the pressure of the oil tank is set to be stable so as to simulate seawater load.
2. The load test tool according to claim 1, wherein a dust ring (16) is further arranged between the end cover (13) and the other end of the piston rod (20).
3. The load test tool according to claim 1, wherein a first static seal (51) is arranged between the support seat (41) and the end cover (13).
4. The load test tool according to claim 1, wherein a second static seal (52) is arranged between the supporting seat (41) and the cylinder body (11).
5. The load test tool according to claim 1, wherein the supporting seat (41) and the guide sleeve (42) are in interference fit.
6. The load test tool according to any one of claims 1 to 5, wherein a second dynamic sealing element (17) is arranged between the piston rod (20) and the cylinder body (11).
7. The load test tool according to any one of claims 1 to 5, further comprising a first air release valve (61) and a second air release valve (62), wherein the first air release valve (61) is arranged at one end of the cylinder (11) and is communicated with the rod chamber S1, and the second air release valve (62) is arranged at the other end of the cylinder (11) and is communicated with the rodless chamber S2.
8. The load test tool according to any one of claims 1 to 5, wherein the first connecting piece and the second connecting piece are pin shafts, and the first connecting hole (12a) and the second connecting hole (30a) are pin shaft connecting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358446.4A CN110294065B (en) | 2019-04-30 | 2019-04-30 | Load test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910358446.4A CN110294065B (en) | 2019-04-30 | 2019-04-30 | Load test tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110294065A CN110294065A (en) | 2019-10-01 |
| CN110294065B true CN110294065B (en) | 2020-09-22 |
Family
ID=68026695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910358446.4A Active CN110294065B (en) | 2019-04-30 | 2019-04-30 | Load test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110294065B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202381449U (en) * | 2011-12-21 | 2012-08-15 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and engineering machinery |
| CN102425586B (en) * | 2011-12-21 | 2014-12-10 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and engineering machine |
| CN102619805B (en) * | 2012-04-27 | 2014-05-21 | 郑州宇通重工有限公司 | Hydraulic cylinder suitable for controlling plurality of hydraulic cylinders to extend sequentially |
| CN105114391A (en) * | 2015-08-25 | 2015-12-02 | 中国船舶重工集团公司第七一九研究所 | Sequential-action hydraulic cylinder |
| CN106194900B (en) * | 2016-08-30 | 2018-03-16 | 武汉理工大学 | A kind of hydraulic reciprocating sealing dynamic property detection means and design |
| CN106499696B (en) * | 2016-12-28 | 2018-04-10 | 哈尔滨通用液压机械制造有限公司 | Enclosed self-locking oil cylinder |
| CN108871730B (en) * | 2018-07-27 | 2020-12-15 | 武汉船用机械有限责任公司 | Load test device for propeller |
-
2019
- 2019-04-30 CN CN201910358446.4A patent/CN110294065B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110294065A (en) | 2019-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201503332U (en) | Packing box for hydraulic test on floating tube sheet end of floating head type heat exchanger | |
| CN110594233A (en) | Hydraulic cylinder structure of hydraulic system with higher frequency response requirement and limited installation space | |
| CN111577649A (en) | Magnetic fluid sealing device for slurry pump | |
| CN110294065B (en) | Load test tool | |
| CN218062701U (en) | Mechanical seal operation test device of centrifugal pump | |
| CN211052911U (en) | Pulling device for welding positioning pin | |
| CN214661199U (en) | Hydraulic cylinder | |
| CN103438248A (en) | Sheet-type multi-way valve | |
| CN204164177U (en) | A kind of bearing sleeve structure | |
| CN101359849A (en) | Shielding motor in high-voltage and ultra-high-voltage environment | |
| CN111594510A (en) | Integral type bellows bearing seal cylinder | |
| CN219426699U (en) | Mounting tool for piston ring support ring of piston type compressor | |
| CN201407231Y (en) | Hydraulic cylinder structure | |
| CN214330883U (en) | Novel ceramic composite plunger | |
| CN104595379B (en) | Non-thrust bearing radial oil feeding hydraulic clutch | |
| CN217382088U (en) | Quick pipeline telescoping device | |
| CN218349980U (en) | Biaxial creep high-temperature clamp for nuclear fuel cladding tube | |
| CN213813122U (en) | Pressure test tool for supporting shell of liquid rocket engine | |
| CN212690128U (en) | Modularized engine oil cooling shell | |
| CN216045998U (en) | Leakage repairing pad for welding position of flange and pipeline | |
| CN217107441U (en) | Cooling pipe casting for air compressor | |
| CN212273238U (en) | Pilot-operated type pneumatic control angle seat valve | |
| CN212028521U (en) | Double-end-face single-spring mechanical sealing device | |
| CN221097571U (en) | Load-holding one-way valve assembly with variable area pilot ratio | |
| CN216199485U (en) | Horizontal support oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |