CN113530925A - Hydraulic cylinder friction force testing device in hydraulic equipment and testing method thereof - Google Patents
Hydraulic cylinder friction force testing device in hydraulic equipment and testing method thereof Download PDFInfo
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- CN113530925A CN113530925A CN202110792731.4A CN202110792731A CN113530925A CN 113530925 A CN113530925 A CN 113530925A CN 202110792731 A CN202110792731 A CN 202110792731A CN 113530925 A CN113530925 A CN 113530925A
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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
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Abstract
The invention discloses a hydraulic cylinder friction force testing device in hydraulic equipment and a testing method thereof, relating to the technical field of hydraulic cylinder detection; the problem that a worker cannot conveniently align and fix the piston rod of the loading hydraulic cylinder and the piston rod of the next hydraulic cylinder to be tested is solved; the device specifically comprises a supporting plate which is connected between a group of supporting blocks in a sliding manner, wherein a connecting plate is fixed on the outer wall of one side of each supporting block, and at least two electric conveying plates are arranged at the top of each connecting plate; the specific test method of the device comprises the following steps: the staff promotes the distance that the slip bracing piece adjusted between two electronic conveying boards, fixes the slip bracing piece on the connecting plate through the screw to await measuring the pneumatic cylinder of awaiting measuring is placed on electronic conveying board. According to the invention, the pull rod, the supporting plate and the sliding block are arranged, and the inserting frame can be fixed in the inserting guide plate through the pin and other tools, so that the second piston rod and the first piston rod are quickly aligned and fixed.
Description
Technical Field
The invention relates to the technical field of hydraulic cylinder detection, in particular to a hydraulic cylinder friction force testing device in hydraulic equipment and a testing method thereof.
Background
The hydraulic cylinder comprises a cylinder body and a piston, the piston is slidably mounted in the cylinder body, and the piston is extended out and retracted through oil on two sides of the piston to drive equipment connected with the piston rod. In order to ensure the quality of the hydraulic cylinder, a friction force test is required before the hydraulic cylinder leaves a factory to verify whether the friction force between the piston rod and the inner wall of the cylinder barrel meets the standard or not.
Through the retrieval, chinese patent application number is cn201610543883. x's patent discloses a hydraulic cylinder frictional force testing arrangement, including support, loading hydraulic cylinder, displacement sensor, draw pressure sensor and earrings, the firm placing in ground of the supporting leg level of support bottom surface, the vertical installation loading hydraulic cylinder in support middle part, the piston rod of this loading hydraulic cylinder extends downwards to the support below, draw pressure sensor in the lower tip installation of piston rod, at the lower tip installation earrings of drawing pressure sensor, but above-mentioned scheme still exists inconvenient staff and carries out quick alignment fixed problem with the piston rod of loading hydraulic cylinder and the piston rod of the next hydraulic cylinder that awaits measuring because the detection all needs to calibrate the alignment again to the piston rod of loading hydraulic cylinder and the piston rod of the next hydraulic cylinder that awaits measuring at every turn.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a device and a method for testing the friction force of a hydraulic cylinder in hydraulic equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic cylinder friction force testing device in hydraulic equipment comprises a supporting plate which is connected between a group of supporting blocks in a sliding mode, a connecting plate is fixed on the outer wall of one side of each supporting block, at least two electric conveying plates are arranged on the top of the connecting plate, a hydraulic cylinder to be tested is arranged on the outer wall of the top of each electric conveying plate, a second piston rod is arranged on the inner wall of the hydraulic cylinder to be tested, a plurality of guide rods are fixed on the outer wall of the top of each supporting block, a moving plate is connected to the outer wall of each guide rod in a sliding mode, a plurality of fixing through grooves are formed in the outer wall of the corresponding fixing through groove, a plurality of rectangular through holes are formed in the outer wall of the top of each moving plate, a pull rod is connected to the inner wall of each rectangular through hole in a sliding mode, a pulling mechanism is arranged on the outer wall of the top of each pull rod, a connecting mechanism is arranged on the outer wall of the bottom of each pull rod, a plurality of supporting seats are fixed on the outer wall of the top of the supporting plate, a plurality of supporting seats are arranged on the outer wall of the supporting plate, and a loading hydraulic cylinder is arranged on the top of the supporting plate, the loading pneumatic cylinder inner wall is provided with first piston rod, first piston rod runs through in movable plate top outer wall, the fixed lantern ring has been cup jointed respectively to first piston rod and second piston rod outer wall, fixed lantern ring outer wall sliding connection has a plurality of sliding blocks, a plurality of sliding block one side outer wall is fixed with grafting frame and force sensor respectively, grafting frame and force sensor relative one side outer wall are fixed with first infrared correlation distance measuring sensor and the infrared correlation distance measuring sensor of second respectively, force sensor bottom outer wall is fixed with a plurality of grafting deflector, grafting frame and grafting deflector one side outer wall are opened respectively has circular jack.
Preferably: connecting plate top outer wall is provided with a plurality of slip bracing pieces, electronic conveying board is fixed in on the top outer wall of slip bracing piece, backup pad top outer wall sliding connection has a plurality of slip lagging, the supporting seat is fixed in on the top outer wall of slip lagging, slip lagging and supporting seat both sides outer wall are opened there are a plurality of screw thread through-holes, supporting shoe top outer wall is fixed with control panel, the loading pneumatic cylinder, the pneumatic cylinder that awaits measuring, electronic conveying board, first infrared correlation range sensor, the infrared correlation range sensor of second and tension sensor respectively with control panel electric connection.
Further: the lifting mechanism comprises at least two mounting plates and at least two electric hoists, the mounting plates are fixed on the outer wall of the top of the guide rod, the electric hoists are fixed on the outer wall of the bottom of the mounting plates, and the electric hoists are electrically connected with the control panel.
Further preferred is: the connecting mechanism comprises more than three L-shaped fixing plates, at least two rotating rods, at least two rotating connecting rods and at least two rotating insertion rods, the L-shaped fixing plates are fixed on the outer wall of the top of the supporting plate, the rotating rods are connected to the outer wall of one side of the L-shaped fixing plates in a rotating mode, the rotating connecting rods are fixed on the outer wall of the rotating rods, and the rotating insertion rods are arranged on the inner wall of one side of the rotating connecting rods and the pull rods.
As a preferable aspect of the present invention: the fixing mechanism comprises an extrusion plate, a connecting ring and a threaded rod, an internal thread through hole is formed in the inner wall of one side of the fixed through groove, the threaded rod is arranged on the inner wall of the internal thread through hole, the connecting ring is connected to the outer wall of one side of the threaded rod in a rotating mode, the outer wall of one side of the extrusion plate is connected to the outer wall of one side of the connecting ring in a rotating mode, and the outer walls of the two sides of the extrusion plate are connected to the inner walls of the two sides of the fixed through groove in a sliding mode.
Further preferred as the invention: the outer wall of the pull rod is provided with a plurality of inserting grooves, the inner wall of each inserting groove is provided with an inserting stop block, and the inserting stop block and the outer wall of one side of the pull rod are provided with a plurality of inserting positioning holes.
As a still further scheme of the invention: the outer wall sliding connection of sliding support pole bottom is on the top outer wall of connecting plate, and sliding support pole both sides outer wall is provided with the fixed block respectively, and fixed block and connecting plate top outer wall are opened has a plurality of screw thread through-holes, and electronic conveying board top outer wall is fixed with the limiting plate.
On the basis of the scheme: the outer wall of one side of the supporting block is provided with a plurality of guide sliding grooves, and the outer wall of one side of the supporting plate is connected to the inner wall of the guide sliding grooves in a sliding mode.
On the basis of the foregoing scheme, it is preferable that: and a layer of non-slip mat is fixed on the outer wall of the top of the supporting seat.
A test method of a hydraulic cylinder friction force test device in hydraulic equipment comprises the following steps:
s1: a worker pushes the sliding support rod to adjust the distance between the two electric conveying plates, the sliding support rod is fixed on the connecting plate through screws, and the hydraulic cylinder to be tested is placed on the electric conveying plates;
s2: the working personnel insert the insertion stop block into the insertion groove, fix the insertion stop block on the pull rod through the pin, and control the electric hoist to drive the pull rod to move through the control panel so as to adjust the overall height of the moving plate;
s3: the working personnel screw up all threaded rods on the outer wall of the moving plate, then remove the inserting stop block, then rotate the rotating connecting rod to one side of the pull rod, and fix the rotating connecting rod to one side of the pull rod by rotating the inserting rod;
s4: a worker respectively sleeves and fixes lantern rings on the first piston rod and the second piston rod, an electric conveying plate is started through a control panel, and the electric conveying plate brings the hydraulic cylinder to be tested to the bottom of the first piston rod;
s5: a worker rotates the inserting frame and the inserting guide plate, the inserting frame and the inserting guide plate are aligned, the control panel controls the electric hoist to pull the supporting plate to move upwards, and the supporting plate pushes the hydraulic cylinder to be tested to move upwards through the supporting seat;
s6: when the distance between the two infrared correlation distance measuring sensors reaches a set value, the control panel controls the electric hoist to stop running, and a worker connects the inserting frame to the inner wall of the inserting guide plate through the pin;
s7: the control panel controls the hydraulic cylinder to be tested and the loading hydraulic cylinder to respectively drive the second piston rod and the first piston rod to move in opposite directions, and when the actual vertical stability on the control panel is within an interval, the value is the friction force value between the second piston rod and the hydraulic cylinder to be tested.
The invention has the beneficial effects that:
1. by arranging the pull rod, the supporting plate, the sliding block, the inserting frame and the inserting guide plate, a worker can control the pulling mechanism to pull the pull rod to lift upwards through the control panel, the supporting plate pulls the supporting plate to lift upwards through the supporting seat on the outer wall of the top part, before the pulling mechanism is controlled through the control panel, the worker can rotate the inserting frame and the inserting guide plate to the mutually basically aligned position through the sliding block, the inserting frame can be inserted into the inner wall of the inserting guide plate along with the continuous lifting of the hydraulic cylinder to be tested, the inserting frame can be easily inserted between the two inserting guide plates under the action of the sliding block due to the fact that the outer walls on the two sides of the inserting frame are provided with the inclined buffering slopes, when the distance between the second infrared correlation ranging sensor and the first infrared correlation ranging sensor reaches a set value, the control panel can control the pulling-up mechanism to stop pulling-up, and the inserting frame can be fixed inside the inserting guide plate through tools such as pins, so that the second piston rod and the first piston rod are quickly aligned and fixed.
2. Through setting up electronic conveying board and the fixed lantern ring, the staff pulls out the pin that is used for fixed grafting frame and grafting deflector after the test, pull up the mechanism through control panel control simultaneously and reset, thereby let the examination of test completion await measuring the pneumatic cylinder and get back to electronic conveying board once more on, the staff demolishs the fixed lantern ring on the second piston rod after the test is accomplished, and install on the next examination of awaiting measuring pneumatic cylinder, can follow and continue the operation through the electronic conveying board of control panel control, repeat above-mentioned step and can carry out the frictional force test to next examination pneumatic cylinder that awaits measuring, and the detection efficiency is improved.
3. By arranging the inserting stop blocks and the inserting grooves, when the height of the moving plate needs to be adjusted, a worker can insert the inserting stop blocks on the outer walls of the two sides of the pull rod through the inserting grooves respectively, then fix the inserting stop blocks on the outer walls of the two sides of the pull rod through pins or screws, pull out the rotating inserting rod from the rotating connecting rod and the inner wall of the pull rod at the moment, and release the connection between the pull rod and the rotating connecting rod, simultaneously, all threaded rods on the outer wall of the movable plate are unscrewed, the extrusion of the extrusion plate on the guide rod is released, then the electric hoist can be controlled by the control panel to pull the pull rod, at the moment, the inserting stop blocks which are just installed and fixed on the two sides of the pull rod are clamped at the bottom of the movable plate along with the movement of the pull rod, therefore, the pull rod pulls the movable plate to move upwards, the height of the movable plate can be conveniently adjusted, and the testing device can detect hydraulic cylinders to be tested at different heights.
4. Through setting up slip bracing piece and limiting plate, the slip bracing piece can slide on the connecting plate to adjust the distance between two slip bracing pieces, thereby let electronic conveying board can support and remove the examination pneumatic cylinder that awaits measuring of different widths, the limiting plate can carry on spacingly to the examination pneumatic cylinder that awaits measuring that moves on electronic conveying board simultaneously, avoid the examination pneumatic cylinder that awaits measuring to take place the displacement on electronic conveying board and lead to first piston rod and the unable normal correlation of second piston rod.
5. Through setting up the rotation connecting rod and rotating the inserted link, when needs connect the backup pad in the pull rod bottom, staff's accessible dwang rotates the rotation connecting rod, will rotate the connecting rod and rotate to one side outer wall of pull rod on, will rotate connecting rod and pull rod together fixed through rotating the inserted link afterwards to the completion is fixed to being connected between pull rod and the backup pad.
Drawings
Fig. 1 is a schematic front view of a hydraulic cylinder friction force testing device in a hydraulic apparatus according to the present invention;
FIG. 2 is a schematic side view of a hydraulic cylinder friction force testing device in a hydraulic apparatus according to the present invention;
FIG. 3 is a schematic view of a fixed collar structure of a hydraulic cylinder friction force testing device in a hydraulic apparatus according to the present invention;
fig. 4 is a schematic structural diagram of an internal structure of a fixed through groove of a hydraulic cylinder friction force testing device in a hydraulic device according to the present invention;
FIG. 5 is a schematic structural diagram of a pull rod of a hydraulic cylinder friction force testing device in a hydraulic apparatus according to the present invention;
FIG. 6 is a schematic diagram of an electric transmission plate structure of a hydraulic cylinder friction force testing device in a hydraulic apparatus according to the present invention;
FIG. 7 is a schematic structural diagram of an insertion stop block of the hydraulic cylinder friction force testing device in the hydraulic apparatus according to the present invention;
FIG. 8 is a schematic structural diagram of a support plate of the device for testing the friction force of the hydraulic cylinder in the hydraulic apparatus according to the present invention;
fig. 9 is a schematic circuit flow diagram of a hydraulic cylinder friction force testing device in a hydraulic apparatus according to the present invention.
In the figure: the device comprises a supporting block 1, a control panel 2, a scale 3, a limiting plate 4, a pull rod 5, a guide rod 6, a mounting plate 7, an electric hoist 8, a hydraulic cylinder 9 for loading, a moving plate 10, a hydraulic cylinder 11 to be tested, an electric transmission plate 12, a fixed through groove 13, a first infrared correlation distance measuring sensor 14, a plug-in frame 15, a fixed sleeve ring 16, a squeezing plate 17, a connecting ring 18, a threaded rod 19, a second infrared correlation distance measuring sensor 20, a plug-in guide plate 21, a tension sensor 22, a plug-in stop 23, a rotating connecting rod 24, a supporting plate 25, a connecting plate 26, a sliding support rod 27, a supporting seat 28, a plug-in groove 29, a plug-in positioning hole 30, a rotating plug-in rod 31, a sliding block 32, a guiding sliding groove 33, a 34L-shaped fixing plate, a sliding sleeve plate 35, a rotating rod 36, a first piston rod 37 and a second piston rod 38.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1:
a hydraulic cylinder friction force testing device in hydraulic equipment is shown in figures 1-9 and comprises a supporting plate 25 which is connected between a group of supporting blocks 1 in a sliding mode, a connecting plate 26 is fixed to the outer wall of one side of each supporting block 1 through screws, two sliding supporting rods 27 are fixed to the outer wall of the top of the connecting plate 26 through screws, an electric conveying plate 12 is fixed to the outer wall of the top of each sliding supporting rod 27 through screws, a hydraulic cylinder 11 to be tested is placed on the outer wall of the top of the electric conveying plate 12, a second piston rod 38 is inserted into the inner wall of the hydraulic cylinder 11 to be tested, a plurality of guide rods 6 are fixed to the outer wall of the top of each supporting block 1 through screws, a movable plate 10 is connected to the outer wall of each guide rod 6 in a sliding mode, a plurality of fixed through grooves 13 are formed in the outer wall of each movable plate 10, a fixing mechanism is arranged on the inner wall of each fixed through groove 13, a plurality of rectangular through holes are formed in the outer wall of each movable plate 10, a pull rod 5 is connected to the inner wall of each rectangular through hole in a sliding mode, the outer wall of the top of the pull rod 5 is provided with a lifting mechanism, the outer wall of the bottom of the pull rod 5 is provided with a connecting mechanism, the connecting mechanism is arranged on the outer wall of the top of the support plate 25, the outer wall of the top of the support plate 25 is connected with a plurality of sliding sleeve plates 35 in a sliding manner, the outer wall of the top of the sliding sleeve plates 35 is fixed with a supporting seat 28 through screws, the outer wall of the top of the movable plate 10 is fixed with a loading hydraulic cylinder 9 through screws, the inner wall of the loading hydraulic cylinder 9 is inserted with a first piston rod 37, the first piston rod 37 penetrates through the outer wall of the top of the movable plate 10, the outer walls of the first piston rod 37 and the second piston rod 38 are respectively sleeved with a fixed sleeve ring 16, the outer wall of the fixed sleeve ring 16 is connected with a plurality of sliding blocks 32 in a sliding manner, the outer wall of one side of the plurality of sliding blocks 32 is respectively fixed with an insertion frame 15 and a tension sensor 22 through screws, the outer wall of the opposite side of the insertion frame 15 and the tension sensor 22 is respectively fixed with a first infrared correlation distance measuring sensor 14 and a second infrared correlation distance measuring sensor 20 through screws, the outer wall of the bottom of the tension sensor 22 is fixed with a plurality of inserting guide plates 21 through screws, circular inserting holes are formed in the outer walls of one sides of the inserting frames 15 and the inserting guide plates 21 respectively, the control panel 2 is fixed on the outer wall of the top of the supporting block 1 through screws, the loading hydraulic cylinder 9, the hydraulic cylinder 11 to be tested, the electric conveying plate 12, the first infrared correlation distance measuring sensor 14, the second infrared correlation distance measuring sensor 20 and the tension sensor 22 are electrically connected with the control panel 2 respectively, the models of the first infrared correlation distance measuring sensor 14 and the second infrared correlation distance measuring sensor 20 are RAD20CM, and the model of the tension sensor 22 is HVC-S01.
The worker can control the pulling-up mechanism to pull the pull rod 5 to lift upwards through the control panel 2, at the moment, the pull rod 5 pulls the support plate 25 to lift upwards, the support plate 25 lifts the hydraulic cylinder 11 to be tested on the electric conveying plate 12 upwards through the support seat 28 on the outer wall of the top part, before the pulling-up mechanism is controlled through the control panel 2, the worker can rotate the inserting frame 15 and the inserting guide plate 21 to the mutually basically aligned position through the sliding block 32, along with the continuous lifting of the hydraulic cylinder 11 to be tested, the inserting frame 15 can be inserted into the inner wall of the inserting guide plate 21, because the outer walls on the two sides of the inserting frame 15 are provided with the inclined buffering slopes, under the action of the sliding block 32, the inserting frame 15 can be easily inserted between the two inserting guide plates 21, when the distance between the second infrared correlation ranging sensor 20 and the first infrared correlation ranging sensor 14 reaches a set value, the control panel 2 can control the pulling-up mechanism to stop pulling-up, at this time, the plugging frame 15 can be fixed inside the plugging guide plate 21 by a pin or the like, so that the quick alignment and fixation between the second piston rod 38 and the first piston rod 37 are completed.
In order to be able to lift the tie rod 5 stably; as shown in fig. 1 and 2, the lifting mechanism includes at least two mounting plates 7 and at least two electric hoists 8, the mounting plates 7 are fixed on the top outer wall of the guide rod 6 through screws, the electric hoists 8 are fixed on the bottom outer wall of the mounting plates 7 through screws, and the electric hoists 8 are electrically connected with the control panel 2; through setting up electric hoist 8, electric hoist 8 accessible haulage rope drives the stable upward movement of pull rod 5, lets pull rod 5 can be more stable when pulling backup pad 25 upwards lifting awaits measuring pneumatic cylinder 11, avoids awaiting measuring pneumatic cylinder 11 and takes place the displacement when upward movement and lead to first piston rod 37 and second piston rod 38 not on same axis.
In order to conveniently connect the bottom of the pull rod 5 to the support plate 25; as shown in fig. 6 and 8, the connecting mechanism includes more than three L-shaped fixing plates 34, at least two rotating rods 36, at least two rotating connecting rods 24 and at least two rotating insertion rods 31, the L-shaped fixing plates 34 are fixed on the outer wall of the top of the supporting plate 25 through screws, the rotating rods 36 are rotatably connected to the outer wall of one side of the L-shaped fixing plates 34, the rotating connecting rods 24 are fixed on the outer wall of the rotating rods 36 through screws, and the rotating insertion rods 31 are inserted into the inner walls of one sides of the rotating connecting rods 24 and the pull rods 5; through setting up rotation connecting rod 24 and rotation plug rod 31, when needs connect backup pad 25 in pull rod 5 bottom, staff's accessible dwang 36 rotates rotation connecting rod 24, will rotate connecting rod 24 and rotate to one side outer wall of pull rod 5 on, will rotate connecting rod 24 and pull rod 5 through rotating plug rod 31 afterwards and fix together to the completion is fixed to being connected between pull rod 5 and the backup pad 25.
In order to be able to fix the moving plate 10 on the outer wall of the guide bar 6; as shown in fig. 4, the fixing mechanism includes an extrusion plate 17, a connecting ring 18 and a threaded rod 19, an inner wall of one side of the fixed through slot 13 is provided with an internal threaded through hole, the threaded rod 19 is connected to the inner wall of the internal threaded through hole through threads, the connecting ring 18 is rotatably connected to an outer wall of one side of the threaded rod 19, an outer wall of one side of the extrusion plate 17 is rotatably connected to an outer wall of one side of the connecting ring 18, and outer walls of two sides of the extrusion plate 17 are slidably connected to inner walls of two sides of the fixed through slot 13; through setting up threaded rod 19 and stripper plate 17, when needing to fix movable plate 10 on the outer wall of guide bar 6, staff's accessible rotates threaded rod 19, and threaded rod 19 can promote stripper plate 17 and move forward when rotating threaded rod 19, moves movable plate 10 to the suitable position of guide bar 6 outer wall after, can all tighten all threaded rods 19 of movable plate 10 outer wall, can fix movable plate 10 on the outer wall of guide bar 6.
In order to conveniently adjust the height of the moving plate 10; as shown in fig. 1, 2, 5 and 7, the outer wall of the pull rod 5 is provided with a plurality of insertion grooves 29, the inner wall of the insertion groove 29 is inserted with an insertion stop block 23, and the insertion stop block 23 and the outer wall of one side of the pull rod 5 are provided with a plurality of insertion positioning holes 30; by arranging the inserting stop blocks 23 and the inserting grooves 29, when the height of the moving plate 10 needs to be adjusted, a worker can insert the inserting stop blocks 23 on the outer walls of the two sides of the pull rod 5 through the inserting grooves 29 respectively, then fix the inserting stop blocks 23 on the outer walls of the two sides of the pull rod 5 through pins or screws, pull out the rotating inserting rod 31 from the rotating connecting rod 24 and the inner wall of the pull rod 5, remove the connection between the pull rod 5 and the rotating connecting rod 24, loosen all the threaded rods 19 on the outer wall of the moving plate 10, remove the extrusion of the extrusion plate 17 on the guide rod 6, then control the electric hoist 8 to pull the pull rod 5 through the control panel 2, and at the moment, the inserting stop blocks 23 which are just installed and fixed on the two sides of the pull rod 5 are clamped at the bottom of the moving plate 10 along with the movement of the pull rod 5, so that the pull rod 5 pulls the moving plate 10 to move upwards, and the height of the moving plate 10 can be adjusted conveniently, the testing device can be used for testing the hydraulic cylinders 11 to be tested at different heights.
In order to be able to test hydraulic cylinders 11 to be tested of different widths; as shown in fig. 6, the outer wall of the bottom of the sliding support rod 27 is slidably connected to the outer wall of the top of the connecting plate 26, the outer walls of both sides of the sliding support rod 27 are respectively welded with a fixing block, the fixing block and the outer wall of the top of the connecting plate 26 are provided with a plurality of threaded through holes, and the outer wall of the top of the electric conveying plate 12 is fixed with a limiting plate 4 through screws; through setting up slide support bar 27 and limiting plate 4, slide support bar 27 can slide on connecting plate 26, thereby adjust the distance between two slide support bars 27, thereby let electronic conveying board 12 can support and remove the examination pneumatic cylinder 11 that awaits measuring of different widths, limiting plate 4 can carry on spacingly to the examination pneumatic cylinder 11 that awaits measuring that moves on electronic conveying board 12 simultaneously, avoid awaiting measuring that pneumatic cylinder 11 takes place the displacement on electronic conveying board 12 and lead to first piston rod 37 and second piston rod 38 unable normal correlation.
In order to improve the stability of the support plate 25 when moving up and down; as shown in fig. 8, the outer wall of one side of the supporting block 1 is provided with a plurality of guiding chutes 33, and the outer wall of one side of the supporting plate 25 is slidably connected to the inner wall of the guiding chutes 33; through setting up direction spout 33, direction spout 33 can lead to the removal of backup pad 25, improves the stability of backup pad 25 when reciprocating, avoids backup pad 25 to rock the pneumatic cylinder 11 that awaits measuring on leading to supporting seat 28 to take place the off normal in reciprocating.
In order to improve the supporting effect of the supporting seat 28 on the hydraulic cylinder 11 to be tested; as shown in fig. 8, a layer of non-slip mat is adhered to the outer wall of the top of the supporting seat 28; through fixing one deck slipmat at supporting seat 28 top, can improve the frictional force of the contact surface between supporting seat 28 and the pneumatic cylinder 11 that awaits measuring to improve supporting seat 28 to the support effect of the pneumatic cylinder 11 that awaits measuring.
In use, in this embodiment, the hydraulic cylinder 11 to be tested is first placed on the motorized transfer plate 12, then the two fixed collars 16 are sleeved and fixed on the second piston rod 38 and the first piston rod 37 respectively, then the connecting mechanism is fixed on the outer wall of the bottom of the pull rod 5, the movable plate 10 is fixed on the outer wall of the guide rod 6 through the fixing mechanism, at the moment, the control panel 2 controls the electric conveying plate 12 to drive the hydraulic cylinder 11 to be tested on the electric conveying plate 12 to move forwards, when the hydraulic cylinder 11 to be tested moves to the bottom of the first piston rod 37, the second infrared correlation distance measuring sensor 20 installed at the bottom of the tension sensor 22 just generates correlation with the first infrared correlation distance measuring sensor 14 installed at the top of the inserting frame 15, at this time, the control panel 2 controls the electric transmission plate 12 to stop running, and at this time, the second piston rod 38 and the first piston rod 37 just are located on the same axis.
The worker can control the pulling-up mechanism to pull the pull rod 5 to lift upwards through the control panel 2, at the moment, the pull rod 5 pulls the support plate 25 to lift upwards, the support plate 25 lifts the hydraulic cylinder 11 to be tested on the electric conveying plate 12 upwards through the support seat 28 on the outer wall of the top part, before the pulling-up mechanism is controlled through the control panel 2, the worker can rotate the inserting frame 15 and the inserting guide plate 21 to the mutually basically aligned position through the sliding block 32, along with the continuous lifting of the hydraulic cylinder 11 to be tested, the inserting frame 15 can be inserted into the inner wall of the inserting guide plate 21, because the outer walls on the two sides of the inserting frame 15 are provided with the inclined buffering slopes, under the action of the sliding block 32, the inserting frame 15 can be easily inserted between the two inserting guide plates 21, when the distance between the second infrared correlation ranging sensor 20 and the first infrared correlation ranging sensor 14 reaches a set value, the control panel 2 can control the pulling-up mechanism to stop pulling-up, at this time, the plugging frame 15 can be fixed inside the plugging guide plate 21 by a pin or the like, so that the quick alignment and fixation between the second piston rod 38 and the first piston rod 37 are completed.
After the first piston rod 37 and the second piston rod 38 are aligned and fixed together, a worker connects the hydraulic cylinder 11 to be tested with the control panel 2 through a corresponding line, and then simultaneously controls the hydraulic cylinder 11 to be tested and the loading hydraulic cylinder 9 to drive the second piston rod 38 and the first piston rod 37 to move in opposite directions through the control panel 2, at this time, the top of the tension sensor 22 receives the tension from the first piston rod 37, the bottom receives the tension from the second piston rod 38 and the gravity of the hydraulic cylinder 11 to be tested and the second piston rod 38, the worker can detect the gravity of the second piston rod 38 and the hydraulic cylinder 11 to be tested in advance, after the stress value detected by the tension sensor 22 is stable, the control panel 2 subtracts the actual weight of the hydraulic cylinder 11 to be tested and the second piston rod 38 to be tested, which is weighed and recorded by the worker before, from the stable data detected by the tension sensor 22, the obtained numerical value is the friction force numerical value between the second piston rod 38 and the hydraulic cylinder 11 to be tested, so that whether the friction force between the second piston rod 38 and the hydraulic cylinder 11 to be tested is qualified or not is judged, after the test is finished, a worker pulls out pins for fixing the inserting frame 15 and the inserting guide plate 21, meanwhile, the pulling and lifting mechanism is controlled to reset through the control panel 2, so that the tested hydraulic cylinder 11 to be tested returns to the electric conveying plate 12 again, the worker removes the fixing sleeve ring 16 on the tested second piston rod 38 and installs the fixing sleeve ring on the next hydraulic cylinder 11 to be tested, then, the electric conveying plate 12 can be controlled to continue to operate through the control panel 2, and the friction force test can be carried out on the next hydraulic cylinder 11 to be tested by repeating the steps.
The electric hoist 8 can drive the pull rod 5 to stably move upwards through the hauling rope, when the support plate 25 needs to be connected to the bottom of the pull rod 5, a worker can rotate the rotating connecting rod 24 through the rotating rod 36, the rotating connecting rod 24 is rotated to the outer wall of one side of the pull rod 5, then the rotating connecting rod 24 and the pull rod 5 are fixed together through the rotating insertion rod 31, when the moving plate 10 needs to be fixed on the outer wall of the guide rod 6, the worker can rotate the threaded rod 19, the threaded rod 19 can push the extrusion plate 17 to move forwards when the threaded rod 19 is rotated, all the threaded rods 19 on the outer wall of the moving plate 10 can be screwed down after the moving plate 10 is moved to the proper position of the outer wall of the guide rod 6, when the height of the moving plate 10 needs to be adjusted, the worker can insert the plurality of insertion stop blocks 23 on the outer walls of two sides of the pull rod 5 through the insertion grooves 29 respectively, can fix grafting dog 23 at the both sides outer wall of pull rod 5 through pin or screw afterwards, extract rotation insertion rod 31 from the inner wall of rotating connecting rod 24 and pull rod 5 this moment again, remove the connection between pull rod 5 and the rotation connecting rod 24, unscrew all threaded rods 19 of movable plate 10 outer wall simultaneously, remove the extrusion of stripper plate 17 to guide bar 6, can control electric hoist 8 pulling pull rod 5 through control panel 2 afterwards, the grafting dog 23 that just installs fixedly in pull rod 5 both sides this moment can be along with the removal card in the bottom of movable plate 10 of pull rod 5.
Example 2:
a method for testing a friction force testing device of a hydraulic cylinder in a hydraulic device, as shown in fig. 1-9, comprises the following steps:
s1: the worker pushes the sliding support rod 27 to adjust the distance between the two electric conveying plates 12, fixes the sliding support rod 27 on the connecting plate 26 through screws, and places the hydraulic cylinder 11 to be tested on the electric conveying plates 12;
s2: the worker inserts the inserting stop block 23 into the inserting groove 29, fixes the inserting stop block 23 on the pull rod 5 through the pin, controls the electric hoist 8 to drive the pull rod 5 to move through the control panel 2, and adjusts the overall height of the moving plate 10;
s3: the worker screws all the threaded rods 19 on the outer wall of the moving plate 10, then removes the inserting stop 23, rotates the rotating connecting rod 24 to one side of the pull rod 5, and fixes the rotating connecting rod 24 to one side of the pull rod 5 through the rotating inserting rod 31;
s4: a worker respectively sleeves and fixes the lantern ring 16 on the first piston rod 37 and the second piston rod 38, the electric transmission plate 12 is started through the control panel 2, and the electric transmission plate 12 brings the hydraulic cylinder 11 to be tested to the bottom of the first piston rod 37;
s5: a worker rotates the inserting frame 15 and the inserting guide plate 21, the inserting frame 15 is aligned with the inserting guide plate 21, the control panel 2 controls the electric hoist 8 to pull the supporting plate 25 to move upwards, and the supporting plate 25 pushes the hydraulic cylinder 11 to be tested to move upwards through the supporting seat 28;
s6: when the distance between the two infrared correlation distance measuring sensors reaches a set value, the control panel 2 controls the electric hoist 8 to stop running, and a worker connects the inserting frame 15 to the inner wall of the inserting guide plate 21 through the pin;
s7: the control panel 2 controls the hydraulic cylinder 11 to be tested and the loading hydraulic cylinder 9 to respectively drive the second piston rod 38 and the first piston rod 37 to move in opposite directions, and when the actual vertical stability on the control panel 2 is within an interval, the value is the friction force value between the second piston rod 38 and the hydraulic cylinder 11 to be tested.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A hydraulic cylinder friction force testing device in hydraulic equipment comprises a supporting plate (25) which is connected between a group of supporting blocks (1) in a sliding mode, and is characterized in that a connecting plate (26) is fixed on the outer wall of one side of each supporting block (1), at least two electric conveying plates (12) are arranged at the top of each connecting plate (26), hydraulic cylinders (11) to be tested are arranged on the outer wall of the top of each electric conveying plate (12), second piston rods (38) are arranged on the inner walls of the hydraulic cylinders (11) to be tested, a plurality of guide rods (6) are fixed on the outer wall of the top of each supporting block (1), a movable plate (10) is connected to the outer wall of each guide rod (6) in a sliding mode, a plurality of fixing through grooves (13) are formed in the outer wall of the movable plate (10), fixing mechanisms are arranged on the inner walls of the fixing through grooves (13), a plurality of rectangular through holes are formed in the outer wall of the movable plate (10), and pull rods (5) are connected to the inner walls of the rectangular through holes in a sliding mode, the outer wall of the top of the pull rod (5) is provided with a lifting mechanism, the outer wall of the bottom of the pull rod (5) is provided with a connecting mechanism, the connecting mechanism is arranged on the outer wall of the top of the supporting plate (25), the outer wall of the top of the supporting plate (25) is fixed with a plurality of supporting seats (28), the outer wall of the top of the movable plate (10) is provided with a loading hydraulic cylinder (9), the inner wall of the loading hydraulic cylinder (9) is provided with a first piston rod (37), the first piston rod (37) penetrates through the outer wall of the top of the movable plate (10), the outer walls of the first piston rod (37) and the second piston rod (38) are respectively sleeved with a fixed lantern ring (16), the outer wall of the fixed lantern ring (16) is slidably connected with a plurality of sliding blocks (32), the outer wall of one side of the plurality of sliding blocks (32) is respectively fixed with a plug frame (15) and a tension sensor (22), the outer wall of the opposite side of the plug frame (15) and the tension sensor (22) is respectively fixed with a first infrared correlation distance measuring sensor (14) and a second infrared correlation distance measuring sensor (20), the outer wall of the bottom of the tension sensor (22) is fixed with a plurality of inserting guide plates (21), and the outer walls of one sides of the inserting frame (15) and the inserting guide plates (21) are respectively provided with a circular inserting hole.
2. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment according to claim 1, connecting plate (26) top outer wall is provided with a plurality of sliding support pole (27), electronic conveying board (12) are fixed in on the top outer wall of sliding support pole (27), backup pad (25) top outer wall sliding connection has a plurality of slip lagging (35), supporting seat (28) are fixed in on the top outer wall of slip lagging (35), slip lagging (35) and supporting seat (28) both sides outer wall are opened has a plurality of screw through-holes, supporting shoe (1) top outer wall is fixed with control panel (2), loading pneumatic cylinder (9), the pneumatic cylinder (11) of awaiting measuring, electronic conveying board (12), first infrared correlation distance measuring sensor (14), infrared correlation distance measuring sensor (20) of second and force sensor (22) respectively with control panel (2) electric connection.
3. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as claimed in claim 2, wherein the lifting mechanism comprises at least two mounting plates (7) and at least two electric hoists (8), the mounting plates (7) are fixed on the outer walls of the tops of the guide rods (6), the electric hoists (8) are fixed on the outer walls of the bottoms of the mounting plates (7), and the electric hoists (8) are electrically connected with the control panel (2).
4. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as claimed in claim 3, wherein the connecting mechanism comprises more than three L-shaped fixing plates (34), at least two rotating rods (36), at least two rotating connecting rods (24) and at least two rotating insertion rods (31), the L-shaped fixing plates (34) are fixed on the outer wall of the top of the supporting plate (25), the rotating rods (36) are rotatably connected on the outer wall of one side of the L-shaped fixing plates (34), the rotating connecting rods (24) are fixed on the outer wall of the rotating rods (36), and the rotating insertion rods (31) are arranged on the inner walls of one side of the rotating connecting rods (24) and the pull rods (5).
5. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as claimed in claim 4, wherein the fixing mechanism comprises an extrusion plate (17), a connecting ring (18) and a threaded rod (19), an inner wall of one side of the fixing through groove (13) is provided with an internal threaded through hole, the threaded rod (19) is arranged on the inner wall of the internal threaded through hole, the connecting ring (18) is rotatably connected to an outer wall of one side of the threaded rod (19), an outer wall of one side of the extrusion plate (17) is rotatably connected to an outer wall of one side of the connecting ring (18), and outer walls of two sides of the extrusion plate (17) are slidably connected to inner walls of two sides of the fixing through groove (13).
6. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as claimed in claim 5, wherein the outer wall of the pull rod (5) is provided with a plurality of insertion grooves (29), the inner wall of each insertion groove (29) is provided with an insertion stop block (23), and the outer wall of one side of each insertion stop block (23) and the outer wall of one side of the pull rod (5) are provided with a plurality of insertion positioning holes (30).
7. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as claimed in claim 6, wherein the outer wall of the bottom of the sliding support rod (27) is slidably connected to the outer wall of the top of the connecting plate (26), the outer walls of the two sides of the sliding support rod (27) are respectively provided with a fixed block, the outer walls of the top of the fixed block and the connecting plate (26) are provided with a plurality of threaded through holes, and the outer wall of the top of the electric transfer plate (12) is fixed with the limit plate (4).
8. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as claimed in claim 7, wherein the supporting block (1) is provided with a plurality of guide chutes (33) on one side of the outer wall, and the supporting plate (25) is slidably connected to the inner wall of the guide chutes (33) on one side of the outer wall.
9. The device for testing the friction force of the hydraulic cylinder in the hydraulic equipment as recited in claim 8, wherein a layer of non-slip mat is fixed on the outer wall of the top of the supporting seat (28).
10. A test method of a hydraulic cylinder friction force test device in hydraulic equipment is characterized by comprising the following steps:
s1: a worker pushes the sliding support rod (27) to adjust the distance between the two electric conveying plates (12), the sliding support rod (27) is fixed on the connecting plate (26) through screws, and the hydraulic cylinder (11) to be tested is placed on the electric conveying plates (12);
s2: the worker inserts the inserting stop block (23) into the inserting groove (29), fixes the inserting stop block (23) on the pull rod (5) through the pin, controls the electric hoist (8) to drive the pull rod (5) to move through the control panel (2), and adjusts the overall height of the moving plate (10);
s3: the working personnel screw all the threaded rods (19) on the outer wall of the moving plate (10), then remove the inserting stop blocks (23), then rotate the rotating connecting rods (24) to one side of the pull rod (5), and fix the rotating connecting rods (24) to one side of the pull rod (5) through the rotating inserting rods (31);
s4: a worker respectively sleeves and fixes the lantern ring (16) on the first piston rod (37) and the second piston rod (38), the electric transmission plate (12) is started through the control panel (2), and the electric transmission plate (12) brings the hydraulic cylinder (11) to be tested to the bottom of the first piston rod (37);
s5: a worker rotates the inserting frame (15) and the inserting guide plate (21), the inserting frame (15) is aligned with the inserting guide plate (21), the control panel (2) controls the electric hoist (8) to pull the supporting plate (25) to move upwards, and the supporting plate (25) pushes the hydraulic cylinder (11) to be tested to move upwards through the supporting seat (28);
s6: when the distance between the two infrared correlation distance measuring sensors reaches a set value, the control panel (2) controls the electric hoist (8) to stop running, and a worker connects the inserting frame (15) to the inner wall of the inserting guide plate (21) through the pin;
s7: the control panel (2) controls the hydraulic cylinder (11) to be tested and the loading hydraulic cylinder (9) to respectively drive the second piston rod (38) and the first piston rod (37) to move in opposite directions, and when the actual vertical stability on the control panel (2) is within an interval, the value is the friction force value between the second piston rod (38) and the hydraulic cylinder (11) to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110792731.4A CN113530925A (en) | 2021-07-14 | 2021-07-14 | Hydraulic cylinder friction force testing device in hydraulic equipment and testing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110792731.4A CN113530925A (en) | 2021-07-14 | 2021-07-14 | Hydraulic cylinder friction force testing device in hydraulic equipment and testing method thereof |
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| CN113530925A true CN113530925A (en) | 2021-10-22 |
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| CN202110792731.4A Withdrawn CN113530925A (en) | 2021-07-14 | 2021-07-14 | Hydraulic cylinder friction force testing device in hydraulic equipment and testing method thereof |
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| CN (1) | CN113530925A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509680A (en) * | 2021-12-24 | 2022-05-17 | 重庆明天氢能科技有限公司 | Semi-automatic detection device for hydrogen fuel cell CVM |
| CN116717526A (en) * | 2023-08-10 | 2023-09-08 | 庆铃(临沂)新能源汽车科技有限公司 | Oil cylinder pressure testing device and testing method |
| CN117090833A (en) * | 2023-10-19 | 2023-11-21 | 烟台星辉劳斯堡液压机械有限公司 | A place testing arrangement for pneumatic cylinder production line |
-
2021
- 2021-07-14 CN CN202110792731.4A patent/CN113530925A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114509680A (en) * | 2021-12-24 | 2022-05-17 | 重庆明天氢能科技有限公司 | Semi-automatic detection device for hydrogen fuel cell CVM |
| CN116717526A (en) * | 2023-08-10 | 2023-09-08 | 庆铃(临沂)新能源汽车科技有限公司 | Oil cylinder pressure testing device and testing method |
| CN116717526B (en) * | 2023-08-10 | 2024-01-09 | 庆铃(临沂)新能源汽车科技有限公司 | Oil cylinder pressure testing device and testing method |
| CN117090833A (en) * | 2023-10-19 | 2023-11-21 | 烟台星辉劳斯堡液压机械有限公司 | A place testing arrangement for pneumatic cylinder production line |
| CN117090833B (en) * | 2023-10-19 | 2024-01-30 | 烟台星辉劳斯堡液压机械有限公司 | A place testing arrangement for pneumatic cylinder production line |
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