CN114151415B - Hydraulic cylinder test board and hydraulic system - Google Patents
Hydraulic cylinder test board and hydraulic system Download PDFInfo
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- CN114151415B CN114151415B CN202111294095.9A CN202111294095A CN114151415B CN 114151415 B CN114151415 B CN 114151415B CN 202111294095 A CN202111294095 A CN 202111294095A CN 114151415 B CN114151415 B CN 114151415B
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- hydraulic cylinder
- interface
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- bracket
- hydraulic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/855—Testing of fluid pressure systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a hydraulic cylinder test bench and a hydraulic system, wherein the hydraulic cylinder test bench comprises a support, an adjusting component and a first box body, the adjusting component is arranged on the support and is suitable for being connected with one end of a tested hydraulic cylinder and used for adjusting the position of the tested hydraulic cylinder, the first box body is arranged on the support, the first box body and the adjusting component are arranged at intervals and opposite to each other along the length direction of the support, one side of the first box body, which faces the adjusting component, is suitable for being connected with the other end of the tested hydraulic cylinder, the hydraulic cylinder can drive the first box body to move on the support along the length direction of the support, and the first box body is suitable for placing a counterweight so as to increase the weight of the first box body. The hydraulic cylinder test bench has the advantages of small volume, low cost, simple structure and the like.
Description
Technical Field
The invention relates to a fully-mechanized hydraulic support column, in particular to a hydraulic cylinder test board and a hydraulic system.
Background
The hydraulic cylinder is used as an executive component of a hydraulic system, is key equipment of a hydraulic support of a fully mechanized mining face, can control the positions of the hydraulic support and a scraper conveyor through pushing, and plays a key role in three-machine collaborative operation of the hydraulic support, the scraper conveyor and the coal mining machine.
In the related art, a test bed for carrying out the hydraulic cylinder cannot simulate the disturbing force actions of the hydraulic cylinder in different directions under the real environment, and the error of an experimental result is large.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the invention provides the hydraulic cylinder test board which has a simple structure, can simulate the disturbing forces of the hydraulic cylinder in different directions under the real environment and has accurate experimental results.
The embodiment of the invention provides a hydraulic system for a hydraulic cylinder test bench, which is low in cost and simple in structure.
The hydraulic cylinder test stand according to the embodiment of the invention comprises: a bracket; the adjusting component is arranged on the bracket and is suitable for being connected with one end of the tested hydraulic cylinder and used for adjusting the position of the tested hydraulic cylinder; the first box, the first box is established on the support, the first box with adjusting part is followed the length direction interval of support just sets up relatively, the first box orientation one side of adjusting part be suitable for with the other end of being surveyed the pneumatic cylinder links to each other, the pneumatic cylinder can drive the first box is in follow on the support the length direction of support removes, be suitable for in the first box and place the counter weight, in order to increase the weight of first box.
According to the hydraulic cylinder test bench provided by the embodiment of the invention, the working environment of the tested hydraulic cylinder can be truly simulated through the arrangement of the adjusting component and the first box body, so that the experimental error is reduced, and the accuracy of the experimental result is improved.
In some embodiments, the adjustment assembly comprises: the second box body is arranged on the bracket, and an opening is formed in one side, facing the first box body, of the second box body; the first plate and the second plate are arranged in the second box body, one end of the first plate is arranged on the bracket and can move in the width direction relative to the bracket, one end of the second plate is arranged on one side of the first plate and can move in the height direction relative to the bracket, and the second plate is connected with the other end of the tested hydraulic cylinder; the first guide rail is arranged in the second box body, extends along the width direction of the bracket, and is movably arranged on the first plate; the second guide rail is arranged on the side surface of the first plate, which faces the second plate, and extends along the height direction of the bracket, and one end of the second plate is movably arranged on the second guide rail; the first driving hydraulic cylinder is at least partially arranged in the second box body in a penetrating way, and one end of the first driving hydraulic cylinder is connected with the first plate to drive the first plate to move; the second driving hydraulic cylinder at least partially penetrates through the second box body, and one end of the second driving hydraulic cylinder is suitable for driving the second plate to move.
In some embodiments, the adjustment assembly further comprises: the third plate is arranged in the second box body, the third plate and the second plate are arranged at intervals in parallel along the height direction of the bracket, the third plate is movable relative to the width direction of the bracket, and the second driving hydraulic cylinder is connected with the third plate, so that the second driving hydraulic cylinder drives the second plate to move through the third plate; the third guide rail is arranged on one side of the second plate, which faces the third plate, the third guide rail extends along the width direction of the bracket, the third plate is movably arranged on the second guide rail, or the third guide rail is arranged on one side of the third plate, which faces the second plate, and the second plate is movably arranged on the third guide rail.
In some embodiments, the first box body is provided with a first side surface and a second side surface which are oppositely arranged in the width direction of the bracket, the first side surface and the second side surface are provided with a first sliding rail and a second sliding rail, the first sliding rail is arranged on the first side surface, the second sliding rail is arranged on the second side surface, the first sliding rail and the second sliding rail both extend along the length direction of the bracket, the bracket is provided with a first sliding groove and a second sliding groove, the first sliding groove and the second sliding groove are oppositely arranged at intervals in the width direction of the bracket, the first sliding rail is movably matched in the first sliding groove, and the second sliding rail is movably matched in the second sliding groove; the hydraulic cylinder test bench further comprises a first compression hydraulic cylinder and a second compression hydraulic cylinder, wherein the first compression hydraulic cylinder is arranged on the support, and at least part of the first compression hydraulic cylinder is arranged in the first sliding groove and is suitable for being in stop fit with the first sliding rail so as to adjust the pressure between the first sliding rail and the first sliding groove; the second compressing hydraulic cylinder is arranged on the support, at least part of the second compressing hydraulic cylinder penetrates through the second sliding groove and is suitable for being matched with the second sliding rail in a stop mode so as to adjust pressure between the second sliding rail and the second sliding groove.
In some embodiments, the hydraulic cylinder test stand further comprises: the first roller is rotatably arranged at one end of the first pressing hydraulic cylinder, which faces the first sliding rail, and is suitable for being in stop fit with the first sliding rail; the second roller is rotatably arranged at one end of the second pressing hydraulic cylinder, which faces the second sliding rail, and is suitable for being in stop fit with the second sliding rail.
In some embodiments, a first cooling channel extending along the length direction of the bracket is arranged on the bracket, the first cooling channel is positioned below the first sliding groove, the first cooling channel is provided with a first liquid inlet and a first liquid outlet, so that cooling liquid circularly flows in the first cooling channel through the first liquid inlet and the first liquid outlet, a second cooling channel extending along the length direction of the bracket is arranged on the bracket, the second cooling channel is arranged below the second sliding groove, and the second cooling channel is provided with a second liquid inlet and a second liquid outlet, so that cooling liquid circularly flows in the second cooling channel through the second liquid inlet and the second liquid outlet; the hydraulic cylinder test bench further comprises a cooling assembly, the first liquid outlet and the second liquid outlet are connected with the liquid inlet of the cooling assembly, and the first liquid inlet and the second liquid inlet are connected with the liquid outlet of the cooling assembly, so that cooling liquid in the first cooling channel and cooling liquid in the first cooling channel circularly flow through the cooling assembly.
In some embodiments, the hydraulic cylinder test stand further comprises a weighing assembly disposed between the bracket and the first housing to weigh the first housing.
The hydraulic system for the hydraulic cylinder test bench according to the embodiment of the invention comprises: the pump station is used for providing hydraulic oil for the hydraulic cylinder test bench, and the hydraulic cylinder test bench is the hydraulic cylinder test bench in any one of the embodiments; one end of the first interface group is communicated with the pump station, and the other end of the first interface group is communicated with the hydraulic cylinder test bench so that hydraulic oil can circularly flow between the hydraulic cylinder test bench and the pump station through the first interface group; one end of the second interface group is communicated with the hydraulic cylinder test table; the liquid return box is communicated with the other end of the second interface group, so that the hydraulic oil circularly flows between the hydraulic cylinder test bench and the liquid return box through the second interface group; the pressure detection assembly is arranged between the first interface group and the hydraulic cylinder test bench and between the second interface group and the hydraulic cylinder test bench.
In some embodiments, the first interface group comprises: the first interface is respectively communicated with one ends of the pump station and a second driving hydraulic cylinder of the hydraulic cylinder test bench so that hydraulic oil can circulate between the pump station and the second driving hydraulic cylinder through the first interface; the second interface is respectively communicated with one end of the pump station and one end of the first driving hydraulic cylinder of the hydraulic cylinder test bench, so that hydraulic oil circularly flows between the pump station and the first driving hydraulic cylinder through the second interface; the other end of the third interface is respectively communicated with one end of a first compression hydraulic cylinder of the hydraulic cylinder test table and one end of a second compression hydraulic cylinder of the hydraulic cylinder test table, so that hydraulic oil circularly flows among the pump station, the first compression hydraulic cylinder and the second compression hydraulic cylinder through the third interface; the other end of the fourth interface is suitable for being communicated with one end of the tested oil cylinder so that the hydraulic oil circularly flows between the pump station and the tested oil cylinder through the fourth interface; the first interface, the second interface, the third interface and the fourth interface are all provided with a throttle valve and an overflow valve; the second interface, the third interface and the fourth interface are all provided with hydraulic control one-way valves.
In some embodiments, the second interface group comprises: the fifth interface is respectively communicated with the liquid return tank and the other end of the second driving hydraulic cylinder so that the hydraulic oil circularly flows between the second driving hydraulic cylinder and the liquid return tank through the fifth interface; the bidirectional hydraulic lock is respectively communicated with the first interface and the second interface so as to control the stroke of the second driving hydraulic cylinder; the sixth interface is respectively communicated with the liquid return tank and the other end of the first driving hydraulic cylinder, so that hydraulic oil can respectively circulate between the first driving hydraulic cylinder and the liquid return tank through the sixth interface; a seventh interface, one end of which is communicated with the liquid return tank, and the other end of which is respectively communicated with the other end of the first compression hydraulic cylinder and the other end of the second compression hydraulic cylinder, so that the hydraulic oil circularly flows among the first compression hydraulic cylinder, the second compression hydraulic cylinder and the liquid return tank through the seventh interface; the eighth interface, one end of the eighth interface is communicated with the liquid return tank, the other end of the eighth interface is suitable for being communicated with the other end of the tested oil cylinder, so that the hydraulic oil can circulate between the tested oil cylinder and the liquid return tank through the eighth interface; the fifth interface, the sixth interface, the seventh interface and the eighth interface are all provided with a liquid return circuit breaking valve and a safety valve.
In some embodiments, the pressure detection assembly comprises: the first pressure sensors are respectively arranged at the second interface and the sixth interface, and are used for detecting the pressure in the first driving hydraulic cylinder so as to adjust the thrust exerted by the tested hydraulic cylinder; the second pressure sensors are respectively arranged at the third interface and the seventh interface, and are used for detecting the pressures of the first compression hydraulic cylinder and the second compression hydraulic cylinder so as to adjust the pressure between the first box body and the bracket; the third pressure sensors are respectively arranged on the fourth interface, the eighth interface and the tested hydraulic cylinder, and are used for detecting the pressures of the fourth interface, the eighth interface and the tested hydraulic cylinder so as to accurately control the stroke of the tested hydraulic cylinder.
Drawings
Fig. 1 is a perspective view of a hydraulic cylinder test stand according to an embodiment of the present invention.
Fig. 2 is a front view of a hydraulic cylinder test stand according to an embodiment of the present invention.
Fig. 3 is a left side view of a hydraulic cylinder test block of an embodiment of the present invention with a second tank removed.
Fig. 4 is a perspective view of a hydraulic cylinder test stand according to an embodiment of the present invention with a second housing removed and a first chute removed.
Fig. 5 is a right side view of a hydraulic cylinder test stand according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a hydraulic system for a hydraulic cylinder test stand according to an embodiment of the present invention.
Reference numerals:
a hydraulic cylinder test stand 100;
a hydraulic system 10 for a hydraulic cylinder test stand;
a bracket 1; a first chute 11; a second chute 12; a first cooling channel 13; a first liquid inlet 131; a first liquid outlet 132; a second cooling channel 14; a second liquid inlet 141; a second liquid outlet 142;
an adjustment assembly 2; a first plate 21; a second plate 22; first connection plate 221; a third plate 23; a first driving hydraulic cylinder 24; a second driving hydraulic cylinder 25; a second casing 26; a first rail 27; a second rail 28; a third guide rail 29;
a first casing 3; a second connection plate 31; a first side 32; a second side 33; a first slide rail 34; a second slide rail 35;
a hydraulic cylinder 4 to be measured; a first pressing hydraulic cylinder 5; a first roller 51; a second pressing hydraulic cylinder 6;
a pump station 7;
a first interface group 8; a first interface 81; a second interface 82; a third interface 83; a fourth interface 84; a throttle valve 85; an overflow valve 86; a pilot operated check valve 87;
A second interface group 9; a fifth interface 91; a two-way hydraulic lock 911; a sixth interface 92; a seventh interface 93; an eighth interface 94; a liquid return circuit breaker 95; a safety valve 96;
a liquid return tank 101;
a pressure detection assembly 102; a first pressure sensor 1021;
a second pressure sensor 1022;
a third pressure sensor 1023;
a power supply control system 103; a reversing valve system 104; a reserved opening 105.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A hydraulic cylinder test stand according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the hydraulic cylinder test stand according to the embodiment of the present invention includes a bracket 1, an adjusting assembly 2, and a first casing 3.
The adjusting component 2 is arranged on the bracket 1, and the adjusting component 2 is suitable for being connected with one end of the tested hydraulic cylinder 4 and is used for adjusting the position of the tested hydraulic cylinder 4. Specifically, as shown in fig. 1-2, the adjusting component 2 is disposed on the left side of the bracket 1, a first connecting plate 221 is disposed on the adjusting component 2, and the base of the hydraulic cylinder 4 to be measured is connected to the first connecting plate 221 by a fastener, so that the adjusting component 2 adjusts the position of the base of the hydraulic cylinder 4 to be measured.
The first box 3 is arranged on the support 1, the first box 3 and the adjusting component 2 are arranged at intervals and opposite to each other along the length direction (left-right direction as shown in fig. 1-2) of the support 1, one side of the first box 3, which faces the adjusting component 2, is suitable for being connected with the other end of the hydraulic cylinder 4 to be tested, the hydraulic cylinder can drive the first box 3 to move on the support 1 along the length direction (left-right direction as shown in fig. 1-2) of the support 1, and the counterweight is suitable for being placed in the first box 3 so as to increase the weight of the first box 3. Specifically, as shown in fig. 1-2, the first box 3 is movably disposed on the bracket 1 and is located on the right side of the adjusting component 2, the left side of the first box 3 is provided with a second connecting plate 31, and an earring of a piston rod of the tested hydraulic cylinder 4 is connected with the second connecting plate 31 through a fastener, so that the tested hydraulic cylinder 4 is disposed between the adjusting component 2 and the first box 3, and a counterweight, which may be a weight, a weight or the like, may be placed in the first box 3, and the weight of the first box 3 is changed by adding the counterweight or reducing the counterweight.
According to the hydraulic cylinder test board 100 provided by the embodiment of the invention, through the arrangement of the first box body 3, the first box body 3 is pushed to move through the telescopic movement of the tested hydraulic cylinder 4, and when the tested hydraulic cylinder 4 stops oiling, the first box body 3 continues to move forwards due to the fact that the first box body 3 has inertia left and right, so that the real working environment of the hydraulic cylinder is simulated, experimental errors are reduced, and the accuracy of experimental results is improved.
In some embodiments, the adjusting assembly 2 includes a first plate 21 and a second plate 22, one end of the first plate 21 is provided on the bracket 1 and movable in a width direction (front-rear direction as shown in fig. 1-2) with respect to the bracket 1, one end of the second plate 22 is provided on one side of the first plate 21, the second plate 22 is movable in a height direction (up-down direction as shown in fig. 1-2) with respect to the bracket 1, and the second plate 22 is connected to one end of the hydraulic cylinder 4 to be measured.
Specifically, as shown in fig. 1-2, the first plate 21 is disposed on the support 1 and can move along the front-back direction, so as to drive the second plate 22 to move along the front-back direction, the second plate 22 is movably disposed on the first plate 21 and can move along the up-down direction, the first connecting plate 221 is disposed on the second plate 22, the base of the tested hydraulic cylinder 4 is connected with the first connecting plate 221, and the position of the tested hydraulic cylinder 4 is regulated by the front-back movement of the first plate 21 and the up-down movement of the second plate 22, so that loads in different directions can be applied to the tested hydraulic cylinder 4, so as to simulate the real stress state of the tested hydraulic cylinder 4, and then data acquisition is performed on the pressure, the stroke and the flow of the real state of the tested hydraulic cylinder 4, thereby designing the control strategy of the tested hydraulic cylinder 4.
In some embodiments, the adjustment assembly 2 further includes a second housing 26, a first rail 27, a second rail 28, a first drive cylinder 24, and a second drive cylinder 25.
The second casing 26 is provided on the bracket 1, and an opening (not shown) is provided on a side of the second casing 26 facing the first casing 3, and the first plate 21 and the second plate 22 are both provided in the second casing 26. Specifically, as shown in fig. 1-2 and 4, the second casing 26 is fixed on the bracket 1, the right side of the second casing 26 is provided with an opening, the first plate 21 and the second plate 22 are provided in the second casing 26, and the first connecting member is connected with the hydraulic cylinder 4 to be tested at least partially through the opening.
The first rail 27 is provided in the second casing 26, the first rail 27 extends in the width direction (front-rear direction as viewed in fig. 1-2) of the bracket 1, and the first plate 21 is movably provided on the first rail 27. The first rail 27 is provided at the bottom surface of the second casing 26, the first rail 27 extends in the front-rear direction and the bottom surface of the first plate 21 is movably provided on the first rail 27, whereby the first plate 21 smoothly moves in the front-rear direction.
The second guide rail 28 is provided on the side of the first plate 21 facing the second plate 22, the second guide rail 28 extends in the height direction (up-down direction as shown in fig. 1-2) of the bracket 1, and one end of the second plate 22 is movably provided on the second guide rail 28. Specifically, as shown in fig. 3 to 4, the second guide rail 28 extends in the up-down direction and is provided at the front side of the first plate 21, and one end of the second plate 22 is movably provided on the second guide rail 28, whereby the second plate 22 smoothly moves in the up-down direction on the first plate 21.
At least part of the first driving hydraulic cylinder 24 is penetrated in the second box 26, and one end of the first driving hydraulic cylinder 24 is connected with the first plate 21 to drive the first plate 21 to move. The second driving hydraulic cylinder 25 is at least partially penetrating the second box 26, and one end of the second driving hydraulic cylinder 25 is adapted to drive the second plate 22 to move. Specifically, as shown in fig. 3-4, the first driving hydraulic cylinder 24 and the second driving hydraulic cylinder 25 are hydraulic telescopic rods, the base of the first driving hydraulic cylinder 24 is arranged on the front side surface of the second box 26, the base of the second driving hydraulic cylinder 25 is arranged on the upper side surface of the second box 26, the piston rod of the first driving hydraulic cylinder 24 and the piston rod of the second driving hydraulic cylinder 25 are located in the second box 26, the piston rod of the first driving hydraulic cylinder 24 is connected with the first plate 21 so as to drive the first plate 21 to move in the front-back direction, and the piston rod of the second driving hydraulic cylinder 25 is connected with the second plate 22 so as to drive the second plate 22 to move in the up-down direction.
It is to be understood that the first drive cylinder 24 and the second drive cylinder 25 are not limited thereto, and for example, the first drive cylinder 24 and the second drive cylinder 25 may also be electric telescopic rods, hydraulic cylinders, pneumatic cylinders, or the like.
In some embodiments, the adjustment assembly 2 further includes a third plate 23 and a third rail 29.
The third plate 23 is provided in the second casing 26, the third plate 23 is disposed in parallel with the second plate 22 at intervals in the height direction (up-down direction as shown in fig. 1-2) of the bracket 1, the third plate 23 is movable in the width direction with respect to the bracket 1, and the second driving cylinder 25 is connected to the third plate 23 so that the second driving cylinder 25 drives the second plate 22 to move through the third plate 23. Specifically, as shown in fig. 3 to 4, the third plate 23 is disposed in the second housing 26, and the length of the third plate 23 is smaller than that of the second plate 22, the third plate 23 is movably disposed above the second plate 22 and can move synchronously with the second plate 22 in the up-down direction, the upper end of the third plate 23 is connected to the piston rod of the second driving hydraulic cylinder 25, and when the second plate 22 moves back and forth, the third plate 23 can maintain its original position, thereby preventing interference with the second driving hydraulic cylinder 25 when the second plate 22 moves back and forth, and thus making the setting of the adjusting assembly 2 more reasonable.
It will be appreciated that the arrangement of the third plate 23 and the second guide rail 28 is not limited thereto, and that, for example, the upper surface of the second plate 22 is provided with a slide groove, and that the piston rod of the second drive cylinder 25 is provided with a slider which is movably fitted in the slide groove.
In some embodiments, the third guide rail 29 is provided at a side of the second plate 22 toward the third plate 23, the third guide rail 29 extends in the width direction (front-rear direction as shown in fig. 1-2) of the bracket 1, the third plate 23 is movably provided on the third guide rail 29, or the third guide rail 29 is provided at a side of the third plate 23 toward the second plate 22, and the second plate 22 is movably provided on the third guide rail 29. Specifically, as shown in fig. 3 to 4, a third rail 29 extending in the front-rear direction is provided below the third plate 23, the third rail 29 being engaged with the upper side surface of the second plate 22, or a third rail 29 extending in the front-rear direction is provided above the second plate 22, the third rail 29 being engaged with the lower side surface of the third plate 23, thereby preventing the third plate 23 from moving in the front-rear direction with the second plate 22.
In some embodiments, the first case 3 includes a first side 32 and a second side 33 that are disposed opposite to each other in the width direction (front-rear direction as shown in fig. 1-2) of the bracket 1, the first side 32 and the second side 33 are provided with a first rail 34 and a second rail 35, the first rail 34 is provided on the first side 32, the second rail 35 is provided on the second side 33, and the first rail 34 and the second rail 35 each extend in the length direction (left-right direction as shown in fig. 1-2) of the bracket 1. Specifically, as shown in fig. 5, the front side of the first box 3 is a first side 32, the rear side of the second box 26 is a second side 33, the first sliding rail 34 is disposed on the first side 32 and is located at the lower end of the first side 32, and the second sliding rail 35 is disposed on the second side 33 and is located at the lower end of the second side 33.
The bracket 1 is provided with a first chute 11 and a second chute 12, the first chute 11 and the second chute 12 are oppositely arranged at intervals along the width direction (front-rear direction as shown in fig. 1-2) of the bracket 1, a first slide rail 34 is movably matched in the first chute 11, and a second slide rail 35 is movably matched in the second chute 12. Specifically, as shown in fig. 1-2, the first chute 11 and the second chute 12 are disposed at intervals in the front-rear direction, and the opening of the first chute 11 is disposed toward the rear side, the opening of the second chute 12 is disposed toward the front side, the opening of the first chute 11 and the opening of the second chute 12 are opposite in the front-rear direction, the first slide rail 34 is movably pierced in the first chute 11, and the second slide rail 35 is movably pierced in the second chute 12, whereby the cooperation of the first chute 11 and the first slide rail 34, the cooperation of the second slide rail 35 and the second chute 12 allows the first casing 3 to smoothly slide on the bracket 1.
In some embodiments, the hydraulic cylinder test stand 100 further comprises a first hold-down hydraulic cylinder 5 and a second hold-down hydraulic cylinder 6.
The first compacting hydraulic cylinder 5 is arranged on the bracket 1, and at least part of the first compacting hydraulic cylinder 5 is arranged in the first sliding groove 11 and is suitable for being in stop fit with the first sliding rail 34 so as to adjust the pressure between the first sliding rail 34 and the first sliding groove 11. The second compressing hydraulic cylinder 6 is arranged on the bracket 1, and at least part of the second compressing hydraulic cylinder 6 is penetrated in the second sliding groove 12 and is suitable for being in stop fit with the second sliding rail 35 so as to adjust the pressure between the second sliding rail 35 and the second sliding groove 12. Specifically, as shown in fig. 3 to 4, the first compression hydraulic cylinder 5 and the second compression hydraulic cylinder 6 are hydraulic cylinders, the base of the first compression hydraulic cylinder 5 and the base of the second compression hydraulic cylinder 6 are arranged on the bracket 1, the piston rod of the first compression hydraulic cylinder 5 is in stop fit with the first sliding rail 34, the piston rod of the second compression hydraulic cylinder 6 is in stop fit with the second sliding rail 35, and when the weight in the first box 3 is insufficient, the first sliding rail 34 and the second sliding rail 35 can be compressed by driving the first compression hydraulic cylinder 5 and the second compression hydraulic cylinder 6, so that the weight of the first box 3 is increased.
In some embodiments, the first pressing hydraulic cylinders 5 and the second pressing hydraulic cylinders 6 are multiple, the first pressing hydraulic cylinders 5 are arranged at intervals along the length direction (left-right direction as shown in fig. 1-2) of the support 1, and the second pressing hydraulic cylinders 6 are arranged at intervals along the length direction (left-right direction as shown in fig. 1-2) of the support 1. Specifically, as shown in fig. 4-5, the number of the first compressing hydraulic cylinders 5 is two (two are shown in the drawing), the number of the second compressing hydraulic cylinders 6 is two (two are shown in the drawing), the two first compressing hydraulic cylinders 5 are arranged on the support 1 at intervals along the left-right direction and are located above the first sliding groove 11, and the two second compressing hydraulic cylinders 6 are arranged on the support 1 at intervals along the left-right direction and are located above the second sliding groove 12, so that the stress of the box body in the front-back left-right direction is uniform through the two first compressing hydraulic cylinders 5 and the two second compressing hydraulic cylinders 6, and the problem that the error of a measurement result is large due to uneven stress on one side of the first box body 3 is avoided, so that the hydraulic cylinder test bench 100 is more reasonable in arrangement.
It is to be understood that the first and second hold-down hydraulic cylinders 5 and 6 are not limited thereto, and for example, the first and second hold-down hydraulic cylinders 5 and 6 may also be electric telescopic rods, hydraulic cylinders, pneumatic cylinders, or the like.
In some embodiments, hydraulic cylinder test stand 100 also includes a first roller 51 and a second roller 61.
The first roller 51 is rotatably provided at an end of the first pressing hydraulic cylinder 5 facing the first slide rail 34, and the first roller 51 is adapted to be in a stop-fit with the first slide rail 34. The second roller 61 is rotatably provided at an end of the second pressing hydraulic cylinder 6 facing the second slide rail 35, and the second roller 61 is adapted to be in a stop-fit with the second slide rail 35. Specifically, as shown in fig. 4, the first roller 51 is rotatably provided at the lower end of the piston rod of the first pressing hydraulic cylinder 5, the second roller 61 is rotatably provided at the lower end of the piston rod, the first roller 51 is in stop-fit with the first slide rail 34, the second roller 61 is in stop-fit with the second slide rail 35, when the first slide rail 34 slides in the first slide groove 11, the first roller 51 can rotate on the first slide rail 34, thereby reducing the wear of the first slide rail 34, improving the life of the first slide rail 34, and when the second slide rail 35 slides in the second slide groove 12, the second roller can rotate on the second slide rail 35, thereby reducing the wear of the second slide rail 35, and improving the life of the second slide rail 35.
Since a large amount of heat will be generated between the first slide rail 34 and the first slide rail 11 when the first slide rail 34 slides in the first slide rail 11 and the second slide rail 35 slides in the second slide rail 12, the second slide rail 12 and the second slide rail 35 will generate a large amount of heat, and in severe cases, the first slide rail 34, the first slide rail 11, the second slide rail 35 and the second slide rail 12 will be deformed by heat, which affects the life of the first slide rail 34, the first slide rail 11, the second slide rail 35 and the second slide rail 12 to be reduced. Thus, in some embodiments, the bracket 1 is provided with a first cooling channel 13 extending along a length direction (left-right direction as shown in fig. 3-4), the first cooling channel 13 is disposed below the first chute 11, and the first cooling channel 13 has a first liquid inlet 131 and a first liquid outlet 132, so that the cooling liquid circulates in the first cooling channel 13 through the first liquid inlet 131 and the first liquid outlet 132.
Specifically, as shown in fig. 4-5, the first cooling channel 13 is disposed below the first chute 11, a first partition is disposed in the first cooling channel 13, an upper end and a lower end of the first partition are respectively connected to upper and lower sides of the first cooling channel 13, a right end of the first partition (not shown in the drawing) is connected to a right side of the first cooling channel 13, and a left side of the first partition is disposed at intervals with respect to a left side of the first cooling channel 13, so that the first partition separates the first cooling channel 13 into a first cavity and a second cavity, the first liquid inlet 131 and the first liquid outlet 132 are disposed on the right side of the first cooling channel 13, the first liquid inlet 131 is communicated with the first cavity, and the first liquid outlet 132 is communicated with the second cavity, so that the cooling liquid can flow from the first cavity to the second cavity, and the whole first cooling channel 13 can be filled with the cooling liquid to cool the first chute 11 and the first slide rail 34, and the cooling efficiency of the cooling liquid is improved.
The bracket 1 is provided with a second cooling channel 14 extending along the length direction (left-right direction as shown in fig. 1-2), the second cooling channel 14 is arranged below the second sliding groove 12, and the second cooling channel 14 is provided with a second liquid inlet 141 and a second liquid outlet 142, so that cooling liquid circularly flows in the second cooling channel 14 through the second liquid inlet 141 and the second liquid outlet 142.
Specifically, as shown in fig. 4-5, the second cooling channel 14 is disposed below the second sliding chute 12, a second partition (not shown in the drawing) is disposed in the second cooling channel 14, the upper end and the lower end of the second partition are respectively connected to the upper and lower sides of the second cooling channel 14, the right end of the second partition is connected to the right side of the second cooling channel 14, and the left side of the second partition is spaced from the left side of the second cooling channel 14, so that the second partition separates the second cooling channel 14 into a third cavity and a fourth cavity, the second liquid inlet 141 and the second liquid outlet 142 are disposed on the right side of the second cooling channel 14, the second liquid inlet 141 is communicated with the third cavity, and the second liquid outlet 142 is communicated with the fourth cavity, so that the cooling liquid can flow from the third cavity to the fourth cavity, and the whole second cooling channel 14 can be filled with the cooling liquid to cool the second sliding chute 12 and the second sliding rail 35, and the cooling efficiency of the cooling liquid is improved.
In some embodiments, hydraulic cylinder test stand 100 further includes a cooling assembly (not shown), wherein first fluid outlet 132 and second fluid outlet 142 are each connected to a fluid inlet of the cooling assembly, and first fluid inlet 131 and second fluid inlet 141 are each connected to a fluid outlet of the cooling assembly, such that the cooling fluid in first cooling channel 13 and the cooling fluid in first cooling channel 13 circulate through the cooling assembly. Thereby, the cooling assembly cools the cooling liquid in the first cooling passage 13 and the second cooling passage 14, the cooling assembly improves the cooling efficiency of the cooling liquid, and further prevents the first slide groove 11, the second slide groove 12, the first slide rail 34, and the second slide rail 35 from being deformed by heat.
In some embodiments, the hydraulic cylinder test stand 100 further includes a weighing assembly (not shown) disposed between the bracket 1 and the first housing 3 to weigh the first housing 3. From this, the weighing assembly weighs first box 3 to make the experimental result more accurate.
In some embodiments, the hydraulic cylinder test stand 100 further includes a third driving member (not shown in the drawings), where one end of the third driving member is rotatably disposed on the support 1, and the other end of the third driving member is adapted to be connected to the first casing 3, and the third driving member may drive the first casing 3 to move on the support 1 so as to adjust the distance between the first casing 3 and the adjusting assembly 2. Specifically, the third driving piece is the hydraulic telescoping rod, and the base of hydraulic telescoping rod articulates on support 1, and the piston rod of hydraulic telescoping rod articulates on first box 3, when changing the pneumatic cylinder 4 that is surveyed, opens the third driving piece to adjust the distance between regulation subassembly 2 and the first box 3, conveniently change and install the pneumatic cylinder 4 that is surveyed.
It is understood that the third driving member is not limited thereto, and for example, the third driving member may be an electric telescopic rod, a hydraulic cylinder, a pneumatic cylinder, or the like.
As shown in fig. 6, the hydraulic system 10 for a hydraulic cylinder test stand according to an embodiment of the present invention includes a pump station 7, a first interface group 8, a second interface group 9, a return tank 101, and a pressure detection assembly 102.
The pump station 7 is used for providing hydraulic oil for the hydraulic cylinder test bench, and the hydraulic cylinder test bench is any hydraulic cylinder test bench in the embodiment.
One end of the first interface group 8 is communicated with the pump station 7, and the other end of the first interface group 8 is communicated with the hydraulic cylinder test bench so that hydraulic oil can circulate between the hydraulic cylinder test bench and the pump station 7 through the first interface group 8. Specifically, one end of the first interface group 8 is connected with the pump station 7, and the other end of the first interface group 8 is connected with the rodless cavity of the hydraulic cylinder test bench, so that the pump station 7 supplies oil to the rodless cavity of the hydraulic cylinder test bench through the first interface group 8, and the hydraulic cylinder performs telescopic motion.
One end of the second interface group 9 is communicated with the hydraulic cylinder test bench.
The return tank 101 communicates with the other end of the second port group 9 so that hydraulic oil circulates between the cylinder test stand and the return tank 101 through the second port group 9. Specifically, one end of the second interface group 9 is connected with the liquid return tank 101, and the other end of the second interface group 9 is connected with a rod cavity of a hydraulic cylinder of the hydraulic cylinder test bench, so that the pump station 7 supplies oil to the rod cavity of the hydraulic cylinder test bench through the first interface group 8, and the hydraulic cylinder performs telescopic motion.
The pressure sensing assembly 102 is disposed between the first interface group 8 and the hydraulic cylinder test block and between the second interface group 9 and the hydraulic cylinder test block.
According to the hydraulic system 10 for the hydraulic cylinder test bench, provided by the embodiment of the invention, the pump station 7, the first interface group 8, the second interface group 9, the liquid return tank 101 and the pressure detection assembly 102 are arranged, so that oil is supplied to the hydraulic cylinder test bench, and the pressure information is acquired through the detection of the pressure detection assembly 102, so that the accuracy of an experimental result of the hydraulic cylinder test bench is ensured.
In some embodiments, as shown in fig. 6, the first interface group 8 includes a first interface 81, a second interface 82, a third interface 83, and a fourth interface 84.
The first port 81 communicates with one end of the pump station 7 and the second drive cylinder 25 of the cylinder test stand, respectively, so that hydraulic oil circulates between the pump station 7 and the second drive cylinder 25 through the first port 81. Specifically, one end of the first interface 81 is connected to the pump station 7, the other end of the first interface 81 is connected to the rodless cavity of the second driving hydraulic cylinder 25, when the second driving hydraulic cylinder 25 is extended, the pump station 7 transmits hydraulic oil to the rodless cavity of the second driving hydraulic cylinder 25 through the first interface 81, and when the second driving hydraulic cylinder 25 is contracted, hydraulic oil in the rodless cavity of the second driving hydraulic cylinder 25 returns to the pump station 7 through the first interface 81.
The second port 82 communicates with one end of the pump station 7 and the first drive cylinder 24 of the cylinder test stand, respectively, so that hydraulic oil circulates between the pump station 7 and the first drive cylinder 24 through the second port 82. Specifically, one end of the second interface 82 is connected to the pump station 7, the other end of the second interface 82 is connected to the rodless cavity of the first driving hydraulic cylinder 24, when the first driving hydraulic cylinder 24 is extended, the pump station 7 transmits hydraulic oil to the rodless cavity of the first driving hydraulic cylinder 24 through the second interface 82, and when the first driving hydraulic cylinder 24 is contracted, hydraulic oil in the rodless cavity of the first driving hydraulic cylinder 24 returns to the pump station 7 through the second interface 82.
The third interface 83 is respectively communicated with the pump station 7, and the other end of the third interface 83 is respectively communicated with one end of the first compressing hydraulic cylinder 5 of the hydraulic cylinder test bench and one end of the second compressing hydraulic cylinder 6 of the hydraulic cylinder test bench, so that hydraulic oil circularly flows among the pump station 7, the first compressing hydraulic cylinder and the second compressing hydraulic cylinder 6 through the third interface 83. Specifically, one end of the third interface 83 is connected to the pump station 7, the other end of the third interface 83 is connected to the rodless cavity of the first pressing hydraulic cylinder 5 and the rodless cavity of the second pressing hydraulic cylinder 6, when the first pressing hydraulic cylinder 5 and the second pressing hydraulic cylinder 6 extend, the pump station 7 transmits hydraulic oil to the rodless cavity of the first pressing hydraulic cylinder 5 and the rodless cavity of the second pressing hydraulic cylinder 6 through the third interface 83, and when the first pressing hydraulic cylinder 5 and the second pressing hydraulic cylinder 6 contract, hydraulic oil in the rodless cavity of the first pressing hydraulic cylinder 5 and hydraulic oil in the rodless cavity of the second pressing hydraulic cylinder 6 return to the pump station 7 through the third interface 83.
The fourth interfaces 84 are respectively communicated with the pump station 7, and the other ends of the fourth interfaces 84 are suitable for being communicated with one end of the tested oil cylinder so that hydraulic oil can circulate between the pump station 7 and the tested oil cylinder through the fourth interfaces 84. Specifically, one end of the fourth interface 84 is connected to the pump station 7, the other end of the fourth interface 84 is connected to the rodless cavity of the measured oil cylinder, when the measured oil cylinder extends, the pump station 7 transmits hydraulic oil to the rodless cavity of the measured oil cylinder through the fourth interface 84, and when the measured oil cylinder contracts, hydraulic oil in the rodless cavity of the measured oil cylinder returns to the pump station 7 through the fourth interface 84.
The first port 81, the second port 82, the third port 83 and the fourth port 84 are each provided with a throttle valve 85 and a relief valve 86. Thereby, the pressure and flow rate of the hydraulic oil of the first port 81, the second port 82, the third port 83, and the fourth port 84 are regulated by the throttle valve 85 and the relief valve 86.
The second port 82, the third port 83 and the fourth port 84 are each provided with a pilot operated check valve 87. Thereby, the strokes of the first driving hydraulic cylinder 24, the first pressing hydraulic cylinder 5, the second pressing hydraulic cylinder 6 and the cylinder to be measured are controlled by the pilot operated check valve 87.
In some embodiments, as shown in fig. 6, the second interface group 9 includes a fifth interface 91, a two-way hydraulic lock 911, a sixth interface 92, a seventh interface 93, and an eighth interface 94.
The fifth port 91 communicates with the other ends of the return tank 101 and the second drive cylinder 25, respectively, so that hydraulic oil circulates between the second drive cylinder 25 and the return tank 101 through the fifth port 91. Specifically, one end of the fifth port 91 is connected to the liquid return tank 101, the other end of the fifth port 91 is connected to the rod cavity of the second driving hydraulic cylinder 25, when the second driving hydraulic cylinder 25 is extended, hydraulic oil in the rod cavity of the second driving hydraulic cylinder 25 is transferred to the liquid return tank 101 through the fifth port 91, and when the second driving hydraulic cylinder 25 is contracted, the liquid return tank 101 transfers hydraulic oil to the rod cavity of the second driving hydraulic cylinder 25 through the fifth port 91.
The two-way hydraulic lock 911 communicates with the first port 81 and the second port 82, respectively, to control the stroke of the second drive cylinder 25. Thereby, the stroke of the second drive cylinder 25 is controlled by the bidirectional hydraulic lock 911.
The sixth port 92 communicates with the other ends of the return tank 101 and the first drive cylinder 24, respectively, so that hydraulic oil circulates between the first drive cylinder 24 and the return tank 101 through the sixth port 92, respectively. Specifically, one end of the sixth interface 92 is connected to the liquid return tank 101, the other end of the sixth interface 92 is connected to the rod cavity of the first driving hydraulic cylinder 24, when the first driving hydraulic cylinder 24 is extended, hydraulic oil in the rod cavity of the first driving hydraulic cylinder 24 is delivered to the liquid return tank 101 through the sixth interface 92, and when the first driving hydraulic cylinder 24 is contracted, the liquid return tank 101 delivers hydraulic oil to the rod cavity of the second driving hydraulic cylinder 25 through the sixth interface 92.
One end of the seventh interface 93 is communicated with the liquid return tank 101, and the other end of the seventh interface 93 is respectively communicated with the other end of the first compression hydraulic cylinder 5 and the other end of the second compression hydraulic cylinder 6, so that hydraulic oil circularly flows among the first compression hydraulic cylinder 5, the second compression hydraulic cylinder 6 and the liquid return tank 101 through the seventh interface 93. Specifically, one end of the seventh interface 93 is connected to the liquid return tank 101, the other end of the seventh interface 93 is connected to the rod chamber of the first pressure hydraulic cylinder 5 and the rod chamber of the second pressure hydraulic cylinder 6, when the first pressure hydraulic cylinder 5 and the second pressure hydraulic cylinder 6 extend, hydraulic oil in the rod chamber of the first pressure hydraulic cylinder 5 and hydraulic oil in the rod chamber of the second pressure hydraulic cylinder 6 are sent to the liquid return tank 101 through the seventh interface 93, and when the first pressure hydraulic cylinder 5 and the second pressure hydraulic cylinder 6 contract, the liquid return tank 101 sends hydraulic oil to the rod chamber of the first pressure hydraulic cylinder 5 and the rod chamber of the second pressure hydraulic cylinder 6 through the seventh interface 93.
One end of the eighth port 94 communicates with the return tank 101, and the other end of the eighth port 94 is adapted to communicate with the other end of the cylinder under test so that hydraulic oil circulates between the cylinder under test and the return tank 101 through the eighth port 94. Specifically, one end of the eighth interface 94 is connected to the liquid return tank 101, the other end of the eighth interface 94 is connected to the rod cavity of the measured cylinder, when the measured cylinder stretches, hydraulic oil in the rod cavity of the measured cylinder is conveyed to the liquid return tank 101 through the eighth interface 94, and when the measured cylinder contracts, the liquid return tank 101 conveys hydraulic oil to the rod cavity of the measured cylinder through the eighth interface 94.
The fifth interface 91, the sixth interface 92, the seventh interface 93, and the eighth interface 94 are provided with a liquid return shut-off valve 95 and a safety valve 96. Specifically, the safety valve 96 includes a first safety valve 96 and a second safety valve 96, and the fifth port 91, the sixth port 92, the seventh port 93, and the eighth port 94 are each provided with the first safety valve 96 and the second safety valve 96, whereby the fifth port 91, the sixth port 92, the seventh port 93, and the eighth port 94 are subjected to liquid path overpressure protection through the liquid return circuit breaker 95 and the first safety valve 96 and the second safety valve 96.
In some embodiments, as shown in fig. 6, the pressure detection assembly 102 includes a plurality of first pressure sensors 1021, a plurality of second pressure sensors 1022, and a plurality of third pressure sensors 1023.
A plurality of first pressure sensors 1021 are respectively provided at the second port 82 and the sixth port 92, and the first pressure sensors 1021 are configured to detect a pressure in the first driving cylinder 24 so as to adjust a thrust force received by the cylinder 4 under test. Specifically, the first pressure sensor 1021 includes a first pressure sensor a provided at the second port 82 and a first pressure sensor b provided at the sixth port 92, whereby the pressure in the rod chamber and the rodless chamber of the first drive cylinder 24 is detected by the first pressure sensor a and the first pressure sensor b, thereby detecting the side thrust of the first drive cylinder 24 to which the cylinder under test 4 is subjected.
A plurality of second pressure sensors 1022 are provided at the third interface 83 and the seventh interface 93, respectively, and the second pressure sensors 1022 are used to detect the pressures of the first and second hydraulic pressure cylinders 5 and 6 to adjust the pressure between the first casing and the bracket. Specifically, the second pressure sensor 1022 includes a second pressure sensor a and a second pressure sensor b, the second pressure sensor a is provided at the third interface 83, the second pressure sensor b is provided at the seventh interface 93, and the pressures in the rod chamber and the rodless chamber of the first pressure hydraulic cylinder 5 and the pressures in the rod chamber and the rodless chamber of the second pressure hydraulic cylinder 6 are detected by the second pressure sensor a and the second pressure sensor b, thereby detecting the pressures of the first pressure hydraulic cylinder 5 and the second pressure hydraulic cylinder 6 against the bracket.
A plurality of third pressure sensors 1023 are respectively disposed on the fourth interface 84, the eighth interface 94 and the hydraulic cylinder 4 to be tested, and the third pressure sensors 1023 are configured to detect pressures of the fourth interface 84, the eighth interface 94 and the hydraulic cylinder 4 to be tested so as to precisely control a stroke of the hydraulic cylinder 4 to be tested. Specifically, the plurality of third pressure sensors 1023 includes a third pressure sensor a, a third pressure sensor b, a third pressure sensor c and a third pressure sensor d, where the third pressure sensor a is disposed at the fourth interface 84, the third pressure sensor b is disposed at the eighth interface 94, the third pressure sensor c is disposed at the rod cavity of the hydraulic cylinder 4 to be tested, and the third pressure sensor d is disposed at the rod-less cavity of the hydraulic cylinder 4 to be tested, so that pressure is collected by the third pressure sensor a, the third pressure sensor b, the third pressure sensor c and the third pressure sensor d, and time compensation is performed by the relation between pressure and flow, thereby controlling the hydraulic cylinder to extend to a position where the hydraulic cylinder is desired to extend, and improving the detection result of the hydraulic cylinder test stand.
The hydraulic system 10 for a hydraulic cylinder test bench further comprises a plurality of reserved openings 105, and when the first interface group 8 or the second interface group 9 is damaged or blocked, the operation can be performed through the reserved openings 105.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. A hydraulic cylinder test stand, comprising:
A bracket;
the adjusting component is arranged on the bracket and is suitable for being connected with one end of the tested hydraulic cylinder and used for adjusting the position of the tested hydraulic cylinder;
the first box body is arranged on the support, the first box body and the adjusting component are arranged at intervals and are opposite to each other along the length direction of the support, one side of the first box body, which faces the adjusting component, is suitable for being connected with the other end of the tested hydraulic cylinder, the hydraulic cylinder drives the first box body to move on the support along the length direction of the support, a counterweight is suitable for being placed in the first box body so as to increase the weight of the first box body, the first box body is provided with a first side face and a second side face which are oppositely arranged along the width direction of the support, the first side face and the second side face are arranged on the first side face, the first slide rail is arranged on the first side face, the second slide rail is arranged on the second side face, the first slide rail and the second slide rail are all extended along the length direction of the support, a first slide groove and a second slide groove are arranged on the support, the first slide groove and the second slide groove can move in the width direction of the support in a matched mode, and the first slide groove can move along the width direction of the support at intervals; the hydraulic cylinder test bench further comprises a first compression hydraulic cylinder and a second compression hydraulic cylinder, wherein the first compression hydraulic cylinder is arranged on the support, and at least part of the first compression hydraulic cylinder is arranged in the first sliding groove and is suitable for being in stop fit with the first sliding rail so as to adjust the pressure between the first sliding rail and the first sliding groove; the second compression hydraulic cylinder is arranged on the bracket, at least part of the second compression hydraulic cylinder penetrates through the second sliding groove and is suitable for being in stop fit with the second sliding rail so as to adjust the pressure between the second sliding rail and the second sliding groove;
The bracket is provided with a first cooling channel extending along the length direction of the bracket, the first cooling channel is positioned below the first sliding groove, the first cooling channel is provided with a first liquid inlet and a first liquid outlet so that cooling liquid circularly flows in the first cooling channel through the first liquid inlet and the first liquid outlet, the bracket is provided with a second cooling channel extending along the length direction of the bracket, the second cooling channel is arranged below the second sliding groove, and the second cooling channel is provided with a second liquid inlet and a second liquid outlet so that cooling liquid circularly flows in the second cooling channel through the second liquid inlet and the second liquid outlet; the hydraulic cylinder test bench further comprises a cooling assembly, wherein the first liquid outlet and the second liquid outlet are connected with liquid inlets of the cooling assembly, and the first liquid inlet and the second liquid inlet are connected with liquid outlets of the cooling assembly, so that cooling liquid in the first cooling channel and cooling liquid in the first cooling channel circularly flow through the cooling assembly;
the adjustment assembly includes: the second box body is arranged on the bracket, and an opening is formed in one side, facing the first box body, of the second box body; the first plate and the second plate are arranged in the second box body, one end of the first plate is arranged on the bracket and can move in the width direction relative to the bracket, one end of the second plate is arranged on one side of the first plate and can move in the height direction relative to the bracket, and the second plate is connected with the other end of the tested hydraulic cylinder; the first guide rail is arranged in the second box body, extends along the width direction of the bracket, and is movably arranged on the first plate; the second guide rail is arranged on the side surface of the first plate, which faces the second plate, and extends along the height direction of the bracket, and one end of the second plate is movably arranged on the second guide rail; the first driving hydraulic cylinder is at least partially arranged in the second box body in a penetrating way, and one end of the first driving hydraulic cylinder is connected with the first plate to drive the first plate to move; the second driving hydraulic cylinder at least partially penetrates through the second box body, and one end of the second driving hydraulic cylinder is suitable for driving the second plate to move.
2. The hydraulic cylinder test stand of claim 1, wherein the adjustment assembly further comprises:
the third plate is arranged in the second box body, the third plate and the second plate are arranged at intervals in parallel along the height direction of the bracket, the third plate is movable relative to the width direction of the bracket, and the second driving hydraulic cylinder is connected with the third plate, so that the second driving hydraulic cylinder drives the second plate to move through the third plate;
the third guide rail is arranged on one side of the second plate, which faces the third plate, the third guide rail extends along the width direction of the bracket, the third plate is movably arranged on the second guide rail, or the third guide rail is arranged on one side of the third plate, which faces the second plate, and the second plate is movably arranged on the third guide rail.
3. The hydraulic cylinder test stand of claim 1, further comprising:
the first roller is rotatably arranged at one end of the first pressing hydraulic cylinder, which faces the first sliding rail, and is suitable for being in stop fit with the first sliding rail;
The second roller is rotatably arranged at one end of the second pressing hydraulic cylinder, which faces the second sliding rail, and is suitable for being in stop fit with the second sliding rail.
4. A hydraulic system for a hydraulic cylinder test stand, comprising:
a pump station for providing hydraulic oil to a hydraulic cylinder test bench, the hydraulic cylinder test bench being in accordance with any one of claims 1-3;
one end of the first interface group is communicated with the pump station, and the other end of the first interface group is communicated with the hydraulic cylinder test bench so that hydraulic oil can circularly flow between the hydraulic cylinder test bench and the pump station through the first interface group;
one end of the second interface group is communicated with the hydraulic cylinder test table;
the liquid return box is communicated with the other end of the second interface group, so that the hydraulic oil circularly flows between the hydraulic cylinder test bench and the liquid return box through the second interface group;
the pressure detection assembly is arranged between the first interface group and the hydraulic cylinder test bench and between the second interface group and the hydraulic cylinder test bench.
5. The hydraulic system for a hydraulic cylinder test stand of claim 4, wherein the first interface group includes:
the first interface is respectively communicated with one ends of the pump station and a second driving hydraulic cylinder of the hydraulic cylinder test bench so that hydraulic oil can circulate between the pump station and the second driving hydraulic cylinder through the first interface;
the second interface is respectively communicated with one end of the pump station and one end of the first driving hydraulic cylinder of the hydraulic cylinder test bench, so that hydraulic oil circularly flows between the pump station and the first driving hydraulic cylinder through the second interface;
the other end of the third interface is respectively communicated with one end of a first compression hydraulic cylinder of the hydraulic cylinder test table and one end of a second compression hydraulic cylinder of the hydraulic cylinder test table, so that hydraulic oil circularly flows among the pump station, the first compression hydraulic cylinder and the second compression hydraulic cylinder through the third interface;
the other end of the fourth interface is suitable for being communicated with one end of the tested oil cylinder so that the hydraulic oil circularly flows between the pump station and the tested oil cylinder through the fourth interface;
The first interface, the second interface, the third interface and the fourth interface are all provided with a throttle valve and an overflow valve;
the second interface, the third interface and the fourth interface are all provided with hydraulic control one-way valves.
6. The hydraulic system for a hydraulic cylinder test stand of claim 5, wherein the second interface group includes:
the fifth interface is respectively communicated with the liquid return tank and the other end of the second driving hydraulic cylinder so that the hydraulic oil circularly flows between the second driving hydraulic cylinder and the liquid return tank through the fifth interface;
the bidirectional hydraulic lock is respectively communicated with the first interface and the second interface so as to control the stroke of the second driving hydraulic cylinder;
the sixth interface is respectively communicated with the liquid return tank and the other end of the first driving hydraulic cylinder, so that hydraulic oil can respectively circulate between the first driving hydraulic cylinder and the liquid return tank through the sixth interface;
a seventh interface, one end of which is communicated with the liquid return tank, and the other end of which is respectively communicated with the other end of the first compression hydraulic cylinder and the other end of the second compression hydraulic cylinder, so that the hydraulic oil circularly flows among the first compression hydraulic cylinder, the second compression hydraulic cylinder and the liquid return tank through the seventh interface;
The eighth interface, one end of the eighth interface is communicated with the liquid return tank, the other end of the eighth interface is suitable for being communicated with the other end of the tested oil cylinder, so that the hydraulic oil can circulate between the tested oil cylinder and the liquid return tank through the eighth interface;
the fifth interface, the sixth interface, the seventh interface and the eighth interface are all provided with a liquid return circuit breaking valve and a safety valve.
7. The hydraulic system for a hydraulic cylinder test stand of claim 6, wherein the pressure detection assembly comprises:
the first pressure sensors are respectively arranged at the second interface and the sixth interface, and are used for detecting the pressure in the first driving hydraulic cylinder so as to adjust the thrust exerted by the tested hydraulic cylinder;
the second pressure sensors are respectively arranged at the third interface and the seventh interface, and are used for detecting the pressures of the first compression hydraulic cylinder and the second compression hydraulic cylinder so as to adjust the pressure between the first box body and the bracket;
the third pressure sensors are respectively arranged on the fourth interface, the eighth interface and the tested hydraulic cylinder, and are used for detecting the pressures of the fourth interface, the eighth interface and the tested hydraulic cylinder so as to accurately control the stroke of the tested hydraulic cylinder.
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| KR20150006155A (en) * | 2013-07-08 | 2015-01-16 | 한국기계연구원 | Performance testing device for cylinder |
| CN204512069U (en) * | 2014-12-31 | 2015-07-29 | 燕山大学 | The test bed hydraulic control system of energy saving excavator oil hydraulic cylinder |
| CN210715382U (en) * | 2019-10-31 | 2020-06-09 | 新疆金风科技股份有限公司 | Oil cylinder testing system |
| CN110864031A (en) * | 2019-11-11 | 2020-03-06 | 济南华凯葳液压科技有限公司 | Detection system for overcoming hydraulic oil temperature rise in hydraulic detection process |
| CN112780639A (en) * | 2021-01-26 | 2021-05-11 | 三一重型装备有限公司 | Stand durability test hydraulic system and hydraulic component durability test device |
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