CN109026903B - Comprehensive test platform for dynamic performance of hydraulic cylinder of engineering machinery - Google Patents
Comprehensive test platform for dynamic performance of hydraulic cylinder of engineering machinery Download PDFInfo
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- CN109026903B CN109026903B CN201810940609.5A CN201810940609A CN109026903B CN 109026903 B CN109026903 B CN 109026903B CN 201810940609 A CN201810940609 A CN 201810940609A CN 109026903 B CN109026903 B CN 109026903B
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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
Abstract
Engineering machine tool pneumatic cylinder dynamic property integrated test platform, including preceding open-ended box, the cavity is seted up to box bottom one side, rectangular groove is seted up to box bottom inner wall one side, rectangular trench is located the cavity top, the first telescopic link of rectangular groove one side inner wall fixed mounting horizontally, the movable rod tip fixed mounting slider of first telescopic link, the slider is located rectangular inslot, the articulated installation in slider top is tested the pneumatic cylinder, first standing groove is seted up to cylinder one side by test hydraulic cylinder, the vertical second telescopic link of top inner wall fixed mounting of first standing groove, the movable rod bottom fixed mounting slider of second telescopic link, the slider is located first standing groove, the loop bar articulated installation connecting rod of first telescopic link. Can inject by injecing the cover piston rod of being tested the pneumatic cylinder, the piston rod of first test pneumatic cylinder, avoid taking place the dislocation by the piston rod of being tested the pneumatic cylinder and the piston rod of first test pneumatic cylinder in the test procedure, make test effect better.
Description
Technical Field
The invention belongs to the technical field of hydraulic cylinder testing, and particularly relates to a comprehensive testing platform for dynamic performance of a hydraulic cylinder of engineering machinery.
Background
When testing the pneumatic cylinder, the pneumatic cylinder level of being tested is placed and is contacted with the pneumatic cylinder that tests, and only has a bearing frame to inject in the testing process, and then easily takes place the skew by the pneumatic cylinder that is tested in the testing process, causes test data inaccurate, influences the quality evaluation of pneumatic cylinder.
Disclosure of Invention
The invention provides a comprehensive test platform for dynamic performance of a hydraulic cylinder of engineering machinery, which is used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
a comprehensive test platform for dynamic performance of a hydraulic cylinder of engineering machinery comprises a box body with an opening in the front, a cavity is arranged on one side of the bottom end of the box body, a long groove is arranged on one side of the inner wall of the bottom end of the box body, the long groove is positioned above the cavity, a horizontal first telescopic rod is fixedly arranged on the inner wall of one side of the long groove, a sliding block is fixedly arranged at the end part of a movable rod of the first telescopic rod and positioned in the long groove, a tested hydraulic cylinder is hinged and installed at the top end of the sliding block, a first placing groove is arranged on one side of a cylinder barrel of the tested hydraulic cylinder, a vertical second telescopic rod is fixedly installed on the inner wall of the top end of the first placing groove, a sliding block is fixedly installed at the bottom end of the movable rod of the second telescopic rod and positioned in the first placing groove, a sleeve rod of the first telescopic rod is hinged and installed, the inner walls of two sides of the cavity are fixedly connected through two second guide rods which are parallel to each other and are respectively positioned at the front end and the rear end of the cavity, each second guide rod is positioned below one through groove, two sides of the cavity are respectively provided with a group of screw groups, two groups of screw groups are positioned between the two second guide rods, each group of screw groups consists of two screws and two nuts, each screw is in threaded fit with one nut, one end of each screw in each group of screw groups inclines towards the middle part of the cavity, the top end of each nut is hinged with a first fixing sleeve, each second guide rod is provided with two second fixing sleeves in a matching way, the two second fixing sleeves positioned at the same side of the cavity are fixedly connected through a connecting rod, the connecting rod is vertical to the second guide rods, the two connecting rods are parallel to each other, and each connecting rod can pass through the two first fixing sleeves positioned at the same side of the cavity, one end of each screw rod in each screw rod group is fixedly provided with a first bevel gear, the inner wall of the top end of the cavity is provided with a second placing groove, the inner wall of one side of the second placing groove is fixedly provided with a horizontal sixth telescopic rod, the end part of a movable rod of the sixth telescopic rod is fixedly provided with a movable block, the bottom end of the movable block is fixedly provided with a vertical rod, the bottom end of the vertical rod is fixedly provided with a double-shaft motor, two output shafts of the double-shaft motor are fixedly provided with second bevel gears, each second bevel gear can be meshed and matched with the two first bevel gears in the same screw rod group, the top ends of the two first fixing sleeves positioned in front of the cavity are movably provided with discs with motors, the rotating directions of the two discs are opposite, the top end of each disc is fixedly provided with a vertical third telescopic rod, the two third telescopic rods penetrate through grooves positioned in front of the long strip grooves, two fourth telescopic rods penetrate through the through grooves positioned behind the long grooves, a horizontal rod is fixedly arranged at the top end of each third telescopic rod movable rod, the movable rod of each third telescopic rod is positioned at one end of the bottom edge of the horizontal rod, a fixed block is fixedly arranged at the top end of each fourth telescopic rod movable rod, the opposite ends of the two fixed blocks are respectively provided with a square groove, the front end of each square groove is communicated with the outside, the other end of each horizontal rod can be inserted into the corresponding square groove, a first testing hydraulic cylinder is fixedly arranged at the other side of the inner wall of the bottom end of the box body, the extending direction of the first testing hydraulic cylinder faces the long grooves, a sliding groove with a T-shaped section is arranged on the inner wall of the bottom end of the box body, a movable block with a T-shaped section is arranged in the sliding groove in a matched manner, a limiting sleeve with openings at the two ends is fixedly arranged at the top end of the movable block, a piston, the four second testing hydraulic cylinders are arranged in a rectangular shape, the top ends of the four second testing hydraulic cylinders are fixedly connected through a fixed seat, one side of the bottom surface of the fixed seat is provided with two grooves which are parallel to each other, the two grooves are positioned at the front end and the rear end of the tested hydraulic cylinder and are parallel to the strip groove, the inner walls of the two sides in each groove are respectively and movably provided with a screw rod through a bearing, the opposite ends of the two screw rods in the same groove are fixedly connected through a connecting block, one of the two screw rods in the same groove is provided with a motor, the threads of the two screw rods in the same groove are opposite, each screw rod is matched with a screw nut, the bottom end of each screw nut is fixedly provided with a vertical fifth telescopic rod, the bottom ends of the two fifth telescopic rods positioned at the same side of the fixed seat are fixedly connected through a, the front end and the rear end of each fixed rod are respectively fixedly provided with an L-shaped rod, the vertical rod of each L-shaped rod is positioned between the two fixed rods, the front side and the rear side of the cylinder barrel of the tested hydraulic cylinder are respectively and fixedly provided with an inserting sleeve with an open top end, and the vertical rods of the two L-shaped rods positioned below the same groove can be inserted into the inserting sleeve.
As above engineering machine tool pneumatic cylinder dynamic property comprehensive testing platform, cavity both sides inner wall between through a horizontally first guide bar fixed connection, first guide bar is located the cavity bottom, first guide bar is located between two second guide bars, the cooperation is equipped with two uide bushings on the first guide bar, two uide bushings are located the both sides of first guide bar respectively, every uide bushing top fixed mounting third is fixed cover, every connecting rod can pass a third fixed cover.
According to the comprehensive dynamic performance testing platform for the hydraulic cylinder of the engineering machinery, the top end of the fixing seat is fixedly connected with the inner wall of the top end of the box body through the plurality of springs.
According to the comprehensive test platform for the dynamic performance of the hydraulic cylinder of the engineering machine, the inclined supporting rod is fixedly installed on one side edge of the second test hydraulic cylinder, and the bottom end of the supporting rod is fixedly connected with the inner wall of the bottom end of the box body.
According to the comprehensive test platform for the dynamic performance of the hydraulic cylinder of the engineering machinery, the connecting rod is made of steel.
According to the comprehensive dynamic performance testing platform for the hydraulic cylinder of the engineering machinery, the horizontal rod is made of steel.
The invention has the advantages that: when the tested hydraulic cylinder is in a horizontal state, namely during a horizontal loading test, the tested hydraulic cylinder extends to enable a piston rod to be inserted into the limiting sleeve, meanwhile, the piston rod of the first testing hydraulic cylinder extends and is also inserted into the limiting sleeve, then, the sixth telescopic rod extends to push the moving block to move towards one side of the cavity, the moving block is fixedly connected with the vertical rod, the vertical rod is fixedly connected with the double-shaft motor, the moving block moves to drive the vertical rod and the double-shaft motor to move, the second bevel gear is meshed and matched with the two first bevel gears in one group of screw rod groups, the double-shaft motor works to drive the second bevel gear and the first bevel gear to rotate, the first bevel gear is fixedly connected with the screw rod, and further, the two screw rods in one group of screw rod groups can rotate, each screw rod is in threaded fit with one nut, the nut is hinged and connected with the first fixing sleeve, the, the screw rotates to drive the first fixed sleeve to move towards the middle of the cavity, the first fixed sleeve moves to drive the connecting rod and the second fixed sleeve to move, the second fixed sleeve is fixedly connected with the third telescopic rod, the third telescopic rod penetrates through the through groove to move along the through groove, the third telescopic rod moves to the range of the cylinder barrel of the tested hydraulic cylinder, the third telescopic rod extends to enable the horizontal rod to be positioned above the tested hydraulic cylinder in a horizontal state, then the disc rotates to drive one of the third telescopic rods to rotate, the horizontal rod rotates towards the fixed block, the other end of the horizontal rod is inserted into the square groove, then the third telescopic rod contracts to enable the horizontal rod to be in contact with the cylinder barrel of the tested hydraulic cylinder and press the cylinder barrel downwards, the cylinder barrel of the tested hydraulic cylinder is limited, and the sixth telescopic rod contracts in a same way to enable the second bevel gear to be meshed with two first bevel gears in the other group of screw rods, after the other two third telescopic rods move to the range of the piston rod of the tested hydraulic cylinder, the horizontal rod is in contact with the piston rod of the tested hydraulic cylinder and limits the piston rod, and then a horizontal loading test is carried out; after the horizontal loading test is finished, when a heavy object simulation loading test needs to be carried out, the first telescopic rod contracts to drive the sliding block to move towards the first telescopic rod, the second telescopic rod contracts to drive the sliding block to move towards the second telescopic rod, the sliding block is connected with the first telescopic rod through the hinged connection of the connecting rod, a tested hydraulic cylinder can gradually change into a vertical state until the tested hydraulic cylinder changes into the vertical state, then the screw rod with the motor rotates, the threads of the two screw rods positioned in the same groove are opposite, the two nuts positioned in the same groove can relatively move, the nut is fixedly connected with the fifth telescopic rod, the nut can drive the fifth telescopic rod to move, the fifth telescopic rod can move to enable the two fixing rods to respectively move two sides of the tested hydraulic cylinder in the vertical state, then the fifth telescopic rod extends to enable the vertical rod of the L-shaped rod to be inserted into the insertion sleeve, thereby further support, inject vertical by the test pneumatic cylinder, avoid being tested the pneumatic cylinder and take place the slope, then the shrink of second test pneumatic cylinder makes fixing base and the contact of being tested the pneumatic cylinder piston rod top, carries out the heavy object simulation loading test. The invention can support and limit the tested hydraulic cylinder during the horizontal loading test and the weight simulation test, thereby avoiding the inaccurate data caused by the movement and the deviation of the tested hydraulic cylinder due to the overlarge stress in the test process, simultaneously reducing the occupied space of a plurality of independent test devices, improving the space utilization rate, and reducing the working labor intensity because the tested hydraulic cylinder does not need to be moved from the horizontal loading test device to the weight simulation test device in the test. Can inject by injecing the cover piston rod of being tested the pneumatic cylinder, the piston rod of first test pneumatic cylinder, avoid taking place the dislocation by the piston rod of being tested the pneumatic cylinder and the piston rod of first test pneumatic cylinder in the test procedure, make test effect better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a view of A of FIG. 1; FIG. 3 is a view of B of FIG. 1; FIG. 4 is an enlarged view of view C of FIG. 1; FIG. 5 is a view of D of FIG. 1; fig. 6 is a view of E of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A comprehensive test platform for dynamic performance of a hydraulic cylinder of engineering machinery comprises a box body 1 with an opening in the front, a cavity 2 is arranged on one side of the bottom end of the box body 1, a long strip groove 3 is arranged on one side of the inner wall of the bottom end of the box body 1, the long strip groove 3 is positioned above the cavity 2 and is not communicated with the cavity 2, a horizontal first telescopic rod 4 is fixedly arranged on the inner wall of one side of the long strip groove 3, a sliding block 5 is fixedly arranged on the end part of a movable rod of the first telescopic rod 4, the sliding block 5 is positioned in the long strip groove 3, a tested hydraulic cylinder 6 is hinged on the top end of the sliding block 5, a first placing groove 7 is arranged on one side of a cylinder barrel of the tested hydraulic cylinder 6, a vertical second telescopic rod 8 is fixedly arranged on the inner wall of the top end of the first placing groove 7, a sliding block 9 is fixedly arranged on, one end of a connecting rod 10 is hinged with one side of a sliding block 9, a first telescopic rod 4 and a second telescopic rod 8 are contracted simultaneously, so that a tested hydraulic cylinder 6 can be gradually changed from a horizontal state to a vertical state, meanwhile, the connecting rod 10 is changed from the horizontal state to an inclined state and supports the tested hydraulic cylinder 6, two through grooves 11 are formed in the inner wall of the top end of a cavity 2, the two through grooves 11 are respectively positioned at the front end and the rear end of a long groove 3, the inner walls at the two sides of the cavity 2 are fixedly connected through two second guide rods 13, the two second guide rods 13 are parallel to each other and are respectively positioned at the front end and the rear end of the cavity 2, each second guide rod 13 is positioned below one through groove 11, two groups of screw rod groups 14 are respectively installed at the two sides of the cavity 2, the two groups of screw rod groups 14 are positioned between the two second guide rods 13, each group of screw rod group 14 is composed of, one end of each of the two screws in each screw group 14 inclines towards the middle of the cavity 2, the top end of each nut is hinged with a first fixing sleeve 15, each second guide rod 13 is provided with two second fixing sleeves 16 in a matching way, the two second fixing sleeves 16 positioned on the same side of the cavity 2 are fixedly connected through a connecting rod 17, the connecting rod 17 is perpendicular to the second guide rods 13, the two connecting rods 17 are parallel to each other, each connecting rod 17 can penetrate through the two first fixing sleeves 15 positioned on the same side of the cavity 2, the two screws in each screw group 14 and one connecting rod 17 form a triangular structure, the screws rotate to drive the nuts to move along the screws and simultaneously drive the connecting rods 17 to move, one end of each of the two screws in each screw group 14 is fixedly provided with a first bevel gear 38, the inner wall of the top end of the cavity 2 is provided with a second placing groove 39, the inner wall of one side of the second placing groove 39 is fixedly provided with a, a moving block 41 is fixedly installed at the end of a moving rod of a sixth telescopic rod 40, a vertical rod 42 is fixedly installed at the bottom end of the moving block 41, a double-shaft motor 43 is fixedly installed at the bottom end of the vertical rod 42, second bevel gears 44 are respectively and fixedly installed on two output shafts of the double-shaft motor 43, each second bevel gear 44 can be meshed and matched with two first bevel gears 38 in the same screw group 14, the sixth telescopic rod 40 extends to push the moving block 41 to move towards one side of the cavity 2, the second bevel gear 44 is located between the two first bevel gears 38, so that the second bevel gear 44 is meshed and matched with the two first bevel gears 38 in one screw group 14, the double-shaft motor 43 can drive the second bevel gear 44 and the first bevel gear 38 to rotate so as to drive the two screws in one screw group 14 to rotate, and a disc 18 with a motor is movably installed at the top ends of the two first fixing, the rotating directions of the two disks 18 are opposite, a vertical third telescopic rod 19 is fixedly installed at the top end of each disk 18, the two third telescopic rods 19 penetrate through the through groove 11 in front of the strip groove 3, a vertical fourth telescopic rod 20 is fixedly installed at the top end of the two first fixing sleeves 15 in back of the cavity 2, the two fourth telescopic rods 20 penetrate through the through groove 11 in back of the strip groove 3, a horizontal rod 21 is fixedly installed at the top end of a movable rod of each third telescopic rod 19, the movable rod of the third telescopic rod 19 is located at one end of the bottom edge of the horizontal rod 21, a fixed block 22 is fixedly installed at the top end of the movable rod of each fourth telescopic rod 20, the opposite ends of the two fixed blocks 22 are respectively provided with a square groove 23, the front end of the square groove 23 is communicated with the outside, the other end of each horizontal rod 21 can be inserted into a corresponding square groove 23, the disks 18 rotate to drive the third telescopic rods 19 to, the horizontal rod 21 is inserted into the square groove 23, the square groove 23 supports the horizontal rod 21, a first testing hydraulic cylinder is fixedly arranged on the other side of the inner wall of the bottom end of the box body 1, the extension direction of the first testing hydraulic cylinder faces the long groove 3, a sliding groove 24 with a T-shaped section is formed in the inner wall of the bottom end of the box body 1, a movable block 25 with a T-shaped section is arranged in the sliding groove 24 in a matching manner, a limiting sleeve 26 with two open ends is fixedly arranged at the top end of the movable block 25, a piston rod of the tested hydraulic cylinder 6 and a piston rod of the first testing hydraulic cylinder can be inserted into the limiting sleeve 26, the limiting sleeve 26 limits the piston rod of the tested hydraulic cylinder and the piston rod of the first testing hydraulic cylinder during horizontal loading test, the phenomenon that dislocation occurs due to overlarge extrusion force and the test data is inaccurate is avoided, four vertical second testing hydraulic cylinders 27 are fixedly arranged on the inner wall of the bottom, the top ends of the four second testing hydraulic cylinders 27 are fixedly connected through a fixing seat 28, two parallel grooves 29 are formed in one side of the bottom surface of the fixing seat 28, the two grooves 29 are located at the front end and the rear end of the tested hydraulic cylinder 6, the grooves 29 are parallel to the strip-shaped groove 3, lead screws 30 are movably mounted on the inner walls of the two sides of each groove 29 through bearings, opposite ends of the two lead screws 30 located in the same groove 29 are fixedly connected through connecting blocks, one lead screw 30 of the two lead screws 30 located in the same groove 29 is provided with a motor, the threads of the two lead screws 30 located in the same groove 29 are opposite, the two lead screws 30 located in the same groove 29 are located on the two sides of the tested hydraulic cylinder 6 in a vertical state respectively, each lead screw 30 is provided with a nut 31 in a matched mode, a vertical fifth telescopic rod 32 is fixedly mounted at the bottom end of each nut 31, and a horizontal fixing rod 33 is arranged between the bottom ends of the two fifth telescopic Fixedly connected, dead lever 33 and fifth telescopic link 32 mutually perpendicular, the front and back both ends difference fixed mounting L type pole 34 of every dead lever 33, the vertical pole of every L type pole 34 is located between two dead levers 33, and the both sides are equallyd divide respectively fixed mounting top open-ended plug bush 35 around the cylinder of being tested pneumatic cylinder 6, and the vertical pole of two L type poles 34 that are located same recess 29 below can insert to a plug bush 35 in. When the tested hydraulic cylinder 6 is in a horizontal state, namely, during a horizontal loading test, the tested hydraulic cylinder 6 extends to enable the piston rod to be inserted into the limiting sleeve 26, meanwhile, the piston rod of the first testing hydraulic cylinder extends and is also inserted into the limiting sleeve 26, then the sixth telescopic rod 40 extends to push the moving block 41 to move towards one side of the cavity 2, the moving block 41 is fixedly connected with the vertical rod 42, the vertical rod 42 is fixedly connected with the double-shaft motor 43, the moving block 41 moves to drive the vertical rod 42 and the double-shaft motor 43 to move, so that the second bevel gear 44 is meshed and matched with the two first bevel gears 38 in one screw group 14, the double-shaft motor 43 works to drive the second bevel gear 44 and the first bevel gears 38 to rotate, the first bevel gear 38 is fixedly connected with the screw rod, and further two screw rods in one screw group 14 can rotate, each screw rod is in threaded fit with one nut, and the nut is hinged, the connecting rod 17 penetrates through the two first fixing sleeves 15 and is fixedly connected with the connecting rod 17 and the second fixing sleeve 16, the screw rotates to enable the nut to drive the first fixing sleeves 15 to move towards the middle part of the cavity 2, the first fixing sleeves 15 move to drive the connecting rod 17 and the second fixing sleeves 16 to move, the second fixing sleeves 16 are fixedly connected with the third telescopic rods 19, the third telescopic rods 19 penetrate through the through grooves 11 to enable the third telescopic rods 19 to move along the through grooves 11, the third telescopic rods 19 move to the range of the cylinder barrel of the tested hydraulic cylinder 6, meanwhile, the third telescopic rods 19 extend to enable the horizontal rod 21 to be positioned above the tested hydraulic cylinder 6 in a horizontal state, then the disc 18 rotates to drive one of the third telescopic rods 19 to rotate, the horizontal rod 21 rotates towards the fixing block 22, the other end of the horizontal rod 21 is inserted into the square groove 23, then the third telescopic rods 19 contract to enable the horizontal rod 21 to be in contact with the cylinder barrel of the tested hydraulic cylinder barrel and press the cylinder barrel, limiting the cylinder barrel of the tested hydraulic cylinder, and in the same way, contracting the sixth telescopic rod 40 to enable the second bevel gear 44 to be meshed with the two first bevel gears 38 in the other screw rod group 14, enabling the other two third telescopic rods 19 to move to the range of the piston rod of the tested hydraulic cylinder, enabling the horizontal rod 21 to be in contact with the piston rod of the tested hydraulic cylinder and limiting the piston rod, and then carrying out a horizontal loading test; after the horizontal loading test is finished, when a heavy object simulation loading test needs to be carried out, the first telescopic rod 4 contracts to drive the sliding block 5 to move towards the first telescopic rod 4, meanwhile, the second telescopic rod 8 contracts to drive the sliding block 9 to move towards the second telescopic rod 8, the sliding block 9 is connected with the first telescopic rod 4 through the hinge joint of the connecting rod 10, so that the tested hydraulic cylinder 6 can gradually change into a vertical state until the tested hydraulic cylinder 6 changes into a vertical state, then the screw rod 30 with the motor rotates, the threads of the two screw rods 30 in the same groove 29 are opposite, two nuts 31 in the same groove 29 can relatively move, the nuts 31 are fixedly connected with the fifth telescopic rod 32, the nuts 31 can drive the fifth telescopic rod 32 to move, the fifth telescopic rod 32 can enable the two fixing rods 33 to respectively move two sides of the tested hydraulic cylinder in the vertical state, then the fifth telescopic link 32 extends, and the vertical rod of the L-shaped rod 34 is inserted into the plug 35, so as to further support and limit the vertical tested hydraulic cylinder 6, thereby avoiding the tested hydraulic cylinder 6 from inclining, and then the second testing hydraulic cylinder 27 contracts to enable the fixed seat 28 to contact with the top end of the piston rod of the tested hydraulic cylinder 6, so as to perform a weight simulation loading test. The invention can support and limit the tested hydraulic cylinder 6 during the horizontal loading test and the weight simulation test, avoids inaccurate data caused by movement and deflection of the tested hydraulic cylinder due to overlarge stress in the test process, simultaneously reduces the occupied space of a plurality of independent test devices, improves the space utilization rate, does not need to move the tested hydraulic cylinder from the horizontal loading test device to the weight simulation test device in the test, and reduces the working labor intensity. The piston rod of the tested hydraulic cylinder 6 and the piston rod of the first testing hydraulic cylinder can be limited by the limiting sleeve 26, so that the piston rod of the tested hydraulic cylinder 6 and the piston rod of the first testing hydraulic cylinder are prevented from being dislocated in the testing process, and the testing effect is better.
Specifically, in this embodiment, the inner walls of the two sides of the cavity 2 are fixedly connected through a horizontal first guide rod 12, the first guide rod 12 is located at the bottom end of the cavity 2, the first guide rod 12 is located between two second guide rods 13, the first guide rod 12 is provided with two guide sleeves 36 in a matching manner, the two guide sleeves 36 are respectively located at the two sides of the first guide rod 12, a third fixing sleeve 37 is fixedly mounted at the top end of each guide sleeve 36, and each connecting rod 17 can penetrate through one third fixing sleeve 37. Connecting rod 17 is in the removal, through the cooperation of first guide bar 12 with uide bushing 36, uide bushing 36 and the fixed cover 37 fixed connection of third, can make connecting rod 17 more stable in the removal, and the atress is more even, can further prescribe a limit to connecting rod 17, avoids connecting rod 17 to take place the skew.
Specifically, the top end of the fixing seat 28 and the inner wall of the top end of the box body 1 are fixedly connected through a plurality of springs 45. The fixing seat 28 is connected with the inner wall of the top end of the box body 1 through the spring 45, so that the fixing seat 28 is prevented from colliding with the box body 1 when moving upwards, and the fixing seat 28 and the box body 1 are prevented from being damaged.
Further, a side of the second testing hydraulic cylinder 27 in this embodiment is fixedly installed with an inclined support rod 46, and the bottom end of the support rod 46 is fixedly connected with the inner wall of the bottom end of the box body 1. Through bracing piece 46 fixed connection between every second test pneumatic cylinder 27 and the box 1 bottom inner wall, make second test pneumatic cylinder 27 keep vertical state to it is more firm to make its connection, and the structure is more stable.
Furthermore, the connecting rod 10 according to the present embodiment is made of steel. The connecting rod 10 made of steel is not easy to break off in use, so that the supporting function of the connecting rod 10 is better.
Furthermore, the horizontal rod 21 of the present embodiment is made of steel. The horizontal rod 21 is in contact with the tested hydraulic cylinder 6 and limits the tested hydraulic cylinder 6 when in use, and the horizontal rod 21 made of steel has better using effect and longer service life when in use.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. Engineering machine tool pneumatic cylinder dynamic property integrated test platform, its characterized in that: comprises a box body (1) with an opening in the front, a cavity (2) is arranged on one side of the bottom end of the box body (1), a strip groove (3) is arranged on one side of the inner wall of the bottom end of the box body (1), the strip groove (3) is positioned above the cavity (2), a horizontal first telescopic rod (4) is fixedly arranged on the inner wall of one side of the strip groove (3), a sliding block (5) is fixedly arranged on the end part of a movable rod of the first telescopic rod (4), the sliding block (5) is positioned in the strip groove (3), a tested hydraulic cylinder (6) is hinged and arranged on the top end of the sliding block (5), a first placing groove (7) is arranged on one side of a cylinder barrel of the tested hydraulic cylinder (6), a vertical second telescopic rod (8) is fixedly arranged on the inner wall of the top end of the first placing groove (7), a sliding block (9) is fixedly arranged on the bottom end of the movable rod of the second telescopic rod (8), the sliding block, one end of a connecting rod (10) is hinged with one side of a sliding block (9), two through grooves (11) are formed in the inner wall of the top end of a cavity (2), the two through grooves (11) are respectively positioned at the front end and the rear end of a long groove (3), the inner walls of the two sides of the cavity (2) are fixedly connected through two second guide rods (13), the two second guide rods (13) are parallel to each other and are respectively positioned at the front end and the rear end of the cavity (2), each second guide rod (13) is positioned below one through groove (11), one group of screw rod groups (14) are respectively installed at the two sides of the cavity (2), two groups of screw rod groups (14) are positioned between the two second guide rods (13), each group of screw rod groups (14) consists of two screw rods and two nuts, each screw rod is in threaded fit with one nut, one end of the two screw rods in each group of screw rod groups (14) is inclined towards the middle part of the cavity (2), a first fixing sleeve (15) is hinged, each second guide rod (13) is provided with two second fixing sleeves (16) in a matching way, the two second fixing sleeves (16) positioned on the same side of the cavity (2) are fixedly connected through a connecting rod (17), the connecting rod (17) is perpendicular to the second guide rods (13), the two connecting rods (17) are parallel to each other, each connecting rod (17) can penetrate through the two first fixing sleeves (15) positioned on the same side of the cavity (2), one end of each screw rod in each screw rod group (14) is respectively and fixedly provided with a first bevel gear (38), the inner wall of the top end of the cavity (2) is provided with a second placing groove (39), the inner wall of one side of the second placing groove (39) is fixedly provided with a horizontal sixth telescopic rod (40), the end part of the movable rod of the sixth telescopic rod (40) is fixedly provided with a movable block (41), the bottom end of the movable block (41) is fixedly provided with a vertical rod (42), and the bottom end of, two output shafts of a double-shaft motor (43) are respectively fixedly provided with a second bevel gear (44), each second bevel gear (44) can be meshed and matched with two first bevel gears (38) in the same screw group (14), the top ends of two first fixing sleeves (15) positioned in front of a cavity (2) are movably provided with discs (18) with motors, the rotating directions of the two discs (18) are opposite, the top end of each disc (18) is fixedly provided with a vertical third telescopic rod (19), the two third telescopic rods (19) penetrate through a through groove (11) positioned in front of a long strip groove (3), the top ends of two first fixing sleeves (15) positioned behind the cavity (2) are fixedly provided with vertical fourth telescopic rods (20), the two fourth telescopic rods (20) penetrate through a through groove (11) positioned behind the long strip groove (3), and the top end of a movable rod of each third telescopic rod (19) is fixedly provided with a horizontal rod (21), the movable rod of the third telescopic rod (19) is positioned at one end of the bottom edge of the horizontal rod (21), the top end of the movable rod of each fourth telescopic rod (20) is fixedly provided with a fixed block (22), the opposite ends of the two fixed blocks (22) are respectively provided with a square groove (23), the front end of each square groove (23) is communicated with the outside, the other end of each horizontal rod (21) can be inserted into the corresponding square groove (23), the other side of the inner wall at the bottom end of the box body (1) is fixedly provided with a first testing hydraulic cylinder, the extending direction of the first testing hydraulic cylinder faces to the long groove (3), the inner wall at the bottom end of the box body (1) is provided with a sliding groove (24) with a T-shaped section, a movable block (25) with a T-shaped section is arranged in the sliding groove (24) in a matching manner, the top ends of the movable blocks (25) are fixedly provided with limiting sleeves (26) with openings at two ends, and both the, four vertical second testing hydraulic cylinders (27) are fixedly installed on the inner wall of the bottom end of the box body (1), the four second testing hydraulic cylinders (27) are arranged in a rectangular shape, the top ends of the four second testing hydraulic cylinders (27) are fixedly connected through a fixing seat (28), two parallel grooves (29) are formed in one side of the bottom surface of the fixing seat (28), the two grooves (29) are located at the front end and the rear end of the tested hydraulic cylinder (6), the grooves (29) are parallel to the long groove (3), screw rods (30) are movably installed on the inner walls of two sides in each groove (29) through bearings respectively, opposite ends of the two screw rods (30) in the same groove (29) are fixedly connected through connecting blocks, one screw rod (30) of the two screw rods (30) in the same groove (29) is provided with a motor, and the screw threads of the two screw rods (30) in the same groove (29) are opposite, every lead screw (30) cooperation is equipped with screw (31), the vertical fifth telescopic link of bottom fixed mounting (32) of every screw (31), be located fixing base (28) between two fifth telescopic link (32) bottoms with one side through a horizontally dead lever (33) fixed connection, dead lever (33) and fifth telescopic link (32) mutually perpendicular, both ends fixed mounting L type pole (34) are divided respectively around every dead lever (33), the vertical pole of every L type pole (34) is located between two dead levers (33), divide equally respectively fixed mounting top open-ended plug bush (35) around the cylinder barrel of being tested hydraulic cylinder (6), the vertical pole of two L type poles (34) that are located same recess (29) below can insert to in one plug bush (35).
2. The comprehensive testing platform for the dynamic performance of the hydraulic cylinder of the engineering machinery according to claim 1, characterized in that: cavity (2) both sides inner wall between through a horizontally first guide bar (12) fixed connection, first guide bar (12) are located cavity (2) bottom, first guide bar (12) are located between two second guide bar (13), the cooperation is equipped with two uide bushing (36) on first guide bar (12), two uide bushing (36) are located the both sides of first guide bar (12) respectively, the fixed cover of every uide bushing (36) top fixed mounting third (37), every connecting rod (17) can pass the fixed cover of a third (37).
3. The comprehensive testing platform for the dynamic performance of the hydraulic cylinder of the engineering machinery according to claim 1, characterized in that: the top end of the fixed seat (28) is fixedly connected with the inner wall of the top end of the box body (1) through a plurality of springs (45).
4. The comprehensive testing platform for the dynamic performance of the hydraulic cylinder of the engineering machinery according to claim 1, characterized in that: and one side edge of the second testing hydraulic cylinder (27) is fixedly provided with an inclined supporting rod (46), and the bottom end of the supporting rod (46) is fixedly connected with the inner wall of the bottom end of the box body (1).
5. The comprehensive testing platform for the dynamic performance of the hydraulic cylinder of the engineering machinery according to claim 1, characterized in that: the connecting rod (10) is made of steel.
6. The comprehensive testing platform for the dynamic performance of the hydraulic cylinder of the engineering machinery according to claim 1, characterized in that: the horizontal rod (21) is made of steel.
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| CN203081904U (en) * | 2012-12-19 | 2013-07-24 | 天津工程机械研究院 | Hydraulic cylinder testing bed |
| CN204127003U (en) * | 2014-10-21 | 2015-01-28 | 恒天创丰重工有限公司 | A kind of hydraulic pressure support control system and anti-misoperation support device |
| CN105526210B (en) * | 2016-01-13 | 2017-09-19 | 中南大学 | A kind of small internal leakage measuring method in hydraulic cylinder arbitrary distance of run position and its device |
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| CN106151173A (en) * | 2016-07-22 | 2016-11-23 | 徐州天龙液压机械有限公司 | A kind of efficient numerical control hydraulic cylinder test device |
| CN108006013B (en) * | 2017-11-10 | 2021-09-07 | 河海大学常州校区 | Online detection system and detection method for hydraulic hoist |
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