CN111855170A - Load simulator of operating mechanism - Google Patents
Load simulator of operating mechanism Download PDFInfo
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- CN111855170A CN111855170A CN202010549371.0A CN202010549371A CN111855170A CN 111855170 A CN111855170 A CN 111855170A CN 202010549371 A CN202010549371 A CN 202010549371A CN 111855170 A CN111855170 A CN 111855170A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention relates to an operating mechanism load simulation device which comprises a load simulator, an operating mechanism mounting frame, an output connecting rod, a detection module adapting structure, a position detection module and a control module. The load simulator is used for outputting a simulation load to the operating mechanism to be detected; the operating mechanism mounting frame is used for fixedly mounting the operating mechanism to be detected, and the output connecting rod is used for being in transmission connection with an output part of the operating mechanism to be detected and a piston rod of the load simulator; the position detection module is used for measuring the displacement of the output connecting rod in cooperation with the detection module adaptive structure. According to the operating mechanism load simulation device, the position detection module is matched with the detection module matching structure, the displacement of the output connecting rod is measured to reflect whether the operating mechanism and the load simulator are in place or not, the operating mechanism can be controlled to be switched on or off through the control module according to the condition that the operating mechanism and the load simulator are in place, the operating mechanism or the load simulator can be prevented from working in a fault, and the running safety of the device is improved.
Description
Technical Field
The invention relates to a load simulation device of an operating mechanism.
Background
The operating mechanism is an important device for controlling the opening and closing of the circuit breaker, and the quality of the working performance of the operating mechanism plays an important role in the quality and the working performance of the circuit breaker. Therefore, before the actuator is shipped, the operating performance of the actuator is generally detected under the condition of a certain load so as to prevent the actuator which does not meet the standard from being shipped.
Chinese patent publication No. CN106885737B discloses a hydraulic shock absorber and a load simulator for an operating mechanism using the same. The load simulator comprises a frame, wherein an operating mechanism to be tested and a hydraulic buffer for providing a simulated load are arranged on the frame, a piston rod which makes linear reciprocating motion in a hydraulic cylinder, namely a load cylinder, is arranged in the hydraulic buffer, an external connecting rod which extends out of the hydraulic cylinder along the motion direction of the piston rod is arranged on the piston rod, and the external connecting rod is in transmission connection with an output part of the operating mechanism to be tested. The piston on the piston rod can be subjected to resistance effects of different sizes from hydraulic oil in the linear reciprocating motion process, so that different loads carried by the operating mechanism during opening and closing motion are simulated. The piston rod is provided with an external detection rod, and the external detection rod is provided with a corresponding detection device for detecting the opening and closing speed and time of the operating mechanism.
The load simulation device can realize that the operating mechanism works under the condition of simulated load and measures the opening and closing speed and time corresponding to the operating mechanism, but when the load simulation device operates, an operator cannot judge whether the operating mechanism and the hydraulic buffer are in place or not in the opening and closing action process of each opening and closing action, and the condition that the operating mechanism or the hydraulic buffer runs in a fault easily to cause safety quality accidents is easy to occur.
Disclosure of Invention
The invention aims to provide an operating mechanism load simulation device which can solve the technical problem that the operating mechanism or a hydraulic buffer is easy to operate in a fault mode due to the fact that the operating mechanism load simulation device in the prior art cannot reflect the condition that an operating mechanism is switched on and off in place.
The load simulation device of the operating mechanism adopts the following technical scheme:
the load simulator of the operating mechanism comprises:
a frame;
the load simulator is arranged on the rack and comprises a load cylinder and a piston rod;
the operating mechanism mounting frame is positioned on the rack and used for fixedly mounting the operating mechanism to be detected;
the output connecting rod is used for being in transmission connection with an output part of the operating mechanism to be detected and the piston rod;
the detection module adapting structure is positioned on the output connecting rod and/or the piston rod;
the position detection module is matched with the detection module adaptive structure to measure the displacement of the output connecting rod;
and the control module is used for being connected with the position detection module and the operating mechanism and controlling the operating mechanism to stop when receiving the abnormal signal fed back by the position detection module.
Has the advantages that: the load simulator of the operating mechanism can simulate the load condition of the operating mechanism during opening and closing operations through the load simulator so as to realize detection of the working performance of the operating mechanism under the condition of load; the operating mechanism load simulation device is provided with the detection module adaptive structure and the position detection module which are matched with each other, whether the displacement of the output connecting rod meets the switching-on and switching-off requirements can be measured, signals are transmitted to the control module, the control module can timely turn off the operating mechanism when the switching-on and switching-off is not in place, the operating mechanism or the load simulator is effectively prevented from running with faults, and the working safety of the operating mechanism load simulation device can be improved.
Further, the detection module adapting structure is positioned on the piston rod.
Has the advantages that: because the load simulator is the equipment of simulation fracture structure divide-shut brake motion, the piston rod is straight reciprocating motion, and detection module adaptation structure sets up on the piston rod, makes things convenient for position detection module to measure the output connecting rod displacement volume, is favorable to improving the measuring result degree of accuracy.
Further, the position detection modules are provided with at least two.
Has the advantages that: two or more position detection modules are arranged, on one hand, the measurement data of different position detection modules can be compared, the misoperation of a control module caused by the error of the detection result of a single position measurement module is avoided, and the measurement accuracy is improved; on the other hand, under the condition that one position detection module has a fault, other position detection modules can still continue to work, and the measurement function is more reliable.
Furthermore, the position detection module comprises an auxiliary switch, and a contact of the auxiliary switch is connected with a connecting rod which is matched with the detection module adaptive structure and swings when the output connecting rod acts.
Has the advantages that: the auxiliary switch and the detection module adaptive structure are matched in a mechanical connection mode, the measurement process is stable, and the measurement result is reliable.
Furthermore, the piston rod is hinged with the output connecting rod, a hinge shaft at the hinged position of the piston rod and the output connecting rod is provided with an extension section which extends outwards along one axial end, and the extension section forms a detection module adaptive structure which is in transmission connection with the connecting rod.
Has the advantages that: the detection module adaptive structure is arranged on the hinge shaft at the hinge position of the piston rod and the output connecting rod, the detection module adaptive structure does not need to be independently arranged at other positions, and the arrangement of the detection module adaptive structure is simplified.
Furthermore, the position detection module comprises two auxiliary switches, contacts of the two auxiliary switches are in transmission connection through a parallelogram link mechanism, the contacts of the two auxiliary switches are respectively connected with two swing rods of the parallelogram link mechanism, one swing rod of the parallelogram link mechanism is connected with the output link, and the movable contact is driven to rotate when the output link moves.
Has the advantages that: the auxiliary switches are connected through the transmission of the parallelogram link mechanism, so that the number of adaptive structures of the detection modules on the output link can be reduced, the output link structure is simpler, the number of points acted by external force is fewer, and the detection modules are not easy to damage in the transmission process; the structure simplifies the connection structure of the auxiliary switch and the output connecting rod, and the space occupied by the auxiliary switch and the output connecting rod after connection is smaller.
Further, the frame includes plate-type structure's mounting bracket, and load simulator horizontal installation is in one side of mounting bracket, and the operating mechanism mounting bracket is the tube-shape support body, installs at the opposite side of mounting bracket, and in the piston rod passed the mounting bracket and stretched into the tube-shape support body, the one end of keeping away from the mounting bracket on the tube-shape support body was used for the installation to detect operating mechanism.
Has the advantages that: the output connecting rod is located inside the mounting frame of the operating mechanism, and the cylindrical frame body has a certain protective effect on the output connecting rod, so that the output connecting rod can be prevented from colliding with other structures or operators on the device in the motion process, and the safety of the device is improved.
Furthermore, the position detection module is installed on the cylindrical frame body.
Has the advantages that: the position detection module is convenient to mount, the matching relation between the position detection module and the matching structure of the detection module is favorably set, and the structure is compact.
Furthermore, the position detection module is installed on the upper surface of the cylindrical frame body, and observation windows are arranged on the horizontally opposite side surfaces of the cylindrical frame body.
Has the advantages that: the observation window is convenient for an operator to observe the motion condition of the output connecting rod.
Drawings
Fig. 1 is a schematic structural diagram of an operating mechanism load simulation device 1 according to an embodiment of the present invention in use;
FIG. 2 is a cross-sectional view taken at B-B of FIG. 1;
fig. 3 is a schematic view of a connection structure of an output link in embodiment 1 of the actuator load simulator according to the present invention;
fig. 4 is a schematic view of a connection structure of an output link from another view angle in the embodiment 1 of the actuator load simulator according to the present invention;
fig. 5 is a front view of the auxiliary switch in driving connection with the output link in the embodiment 1 of the actuator load simulator according to the present invention;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a schematic view of FIG. 5 from a right side perspective;
in the figure: 1-a frame; 11-a mounting frame; 12-an operating mechanism mounting frame; 13-mounting a plate; 2-a load simulator; 21-a piston rod; 3-operating mechanism; 41-a first auxiliary switch; 42-a second auxiliary switch; 5-an output link; 51-an extension; 6-first connecting rod; 7-a second connecting rod; 8-transmission rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The specific embodiment 1 of the load simulation device of the operating mechanism of the present invention:
the load simulation device of the operating mechanism comprises a rack 1, wherein the rack 1 comprises a base and an installation frame 11 vertically fixed on the base and extending along the vertical direction, the installation frame 11 is of a plate type structure, and a supporting plate is further fixed between the installation frame 11 and the base in order to enhance the structural strength of the rack 1.
One side of the mounting frame 11 is horizontally provided with a load simulator 2, the load simulator 2 in the embodiment is a prior art, for example, a simulation buffer test device of a high-voltage circuit breaker operating mechanism disclosed in the chinese utility model patent document with the publication number of CN 206020621U. The load simulator 2 comprises a piston cylinder, namely a load cylinder and a piston, a piston rod 21 which extends out of the load cylinder and is in transmission connection with the operating mechanism 3 is connected onto the piston, and the load simulator 2 can provide a simulation load which is close to the load of the operating mechanism during actual opening and closing operation for the operating mechanism 3 so as to verify whether the opening and closing characteristics of the operating mechanism 3 meet requirements.
Operating mechanism mounting bracket 12 is installed to the opposite side of mounting bracket 11, and operating mechanism mounting bracket 12 is the tube-shape support body, tube-shape support body axial one end and mounting bracket 11 fixed connection, and the other end is to keeping away from the direction overhang of mounting bracket 11 and fixedly being provided with mounting panel 13, and the operating mechanism 3 that awaits measuring passes through the bolt-up to be fixed on mounting panel 13. An output swing arm which can swing around a rotation axis on the operating mechanism 3 is in transmission connection with a piston rod 21 of the load simulator 2 through an output connecting rod 5, and the output connecting rod 5 is hinged between the output swing arm and the piston rod 21. The rotation of the output swing arm can be converted into the linear reciprocating motion of the piston rod 21 in the load cylinder through the transmission action of the output connecting rod 5.
The piston rod 21 penetrates through the mounting frame 11 and extends into the cylindrical frame body to be connected with the output connecting rod 5, a through hole is formed in the mounting plate 13, and the output connecting rod 5 penetrates into the operating mechanism 3 through the through hole and is connected with an output swing arm in the operating mechanism 3. The output connecting rod is positioned in the cylindrical frame body and moves in the cylindrical frame body. And observation windows are arranged on the horizontally opposite side surfaces of the operating mechanism mounting frame 12, so that an operator can observe the motion condition of the output connecting rod 5.
As shown in fig. 2 to 7, the hinge shaft at the hinge of the output link 5 and the piston rod 21 has an extension 51 extending outward along one axial end thereof, and the extension 51 constitutes a detection module fitting structure. The upper surface of the mounting frame 12 of the operating mechanism is provided with two position detection modules, each of the two position detection modules includes a first auxiliary switch 41 and a second auxiliary switch 42, and contacts of the two auxiliary switches are arranged along the movement direction of the output link 5.
The contact of the first auxiliary switch 41 is connected with a first connecting rod 6 in an up-rotation mode, and the contact of the second auxiliary switch 42 is connected with a second connecting rod 7 in an up-rotation mode. One end of the first connecting rod 6, which is far away from the contact of the first auxiliary switch 41, is provided with a long circular hole, the extension section 51 is positioned in the long circular hole and is in sliding fit with the long circular hole, and when the output connecting rod 5 moves, the first connecting rod 6 can drive the contact of the first auxiliary switch 41 to rotate by a certain angle. The contact of the second auxiliary switch 42 is connected with the first connecting rod 6 through the second connecting rod 7 and the transmission rod 8, the transmission rod 8 is hinged between the first connecting rod 6 and the second connecting rod 7, and the second connecting rod 7 can drive the contact of the second auxiliary switch 42 to rotate. The transmission rod 8 is parallel to the connecting line between the contacts of the two auxiliary switches, and the first connecting rod 6, the second connecting rod 7, the transmission rod 8 and the contacts of the two auxiliary switches form a parallelogram link mechanism. Under the action of the parallelogram linkage mechanism, the second connecting rod 7 can synchronously rotate together with the first connecting rod 6, and the first connecting rod 6 and the second connecting rod 7 form two swing rods of the parallelogram linkage structure.
In this embodiment, a control module connected to the position detection module 4 and the operating mechanism 3 is provided. When the operating mechanism 3 acts under the action of the simulated load of the load simulator 2, the output link 5 moves to drive the first connecting rod 6 to rotate, the second connecting rod 7 rotates synchronously with the first connecting rod 6, the first auxiliary switch 41 and the second auxiliary switch 42 respectively measure the rotating angles of the first connecting rod 6 and the second connecting rod 7, because the rotation angles of the two swing rods correspond to the displacement distance of the output connecting rod 5, when the opening and closing operation is not in place due to the clamping stagnation or other faults of the load simulator 2 or the operating mechanism 3, the first connecting rod 6 and the second connecting rod 7 cannot reach the set rotating angle, the auxiliary switch can transmit an abnormal signal to the control module, and then the control module turns off the operating mechanism 3 in time, so that the load simulator or the operating mechanism is prevented from moving with faults, and the protection effect on the load simulator or the operating mechanism is realized.
According to the operating mechanism load simulation device, the displacement of the output connecting rod can be detected through the auxiliary switch, the auxiliary switch can transmit signals to the control module, the control module controls the load simulator to be turned off, faulty operation of the operating mechanism or the load simulator is effectively avoided, and the working safety of the operating mechanism load simulation device can be improved.
It should be noted that, in this embodiment, when the total amount of the nodes required by the auxiliary switch is constant, the number of the nodes on a single auxiliary switch is reduced by setting two auxiliary switches, so that the length of the contact on the single auxiliary switch can be shortened, and the contact of the auxiliary switch is prevented from being damaged in the transmission process because the length of the contact is longer than that of the contact on the single auxiliary switch.
The invention relates to a load simulation device of an operating mechanism, which comprises the following specific embodiments:
different from the embodiment 1, the operating mechanism load simulation device is provided with two detection module matching structures, one detection module matching structure is a detection contact fixed on the output connecting rod, the other detection module matching structure is a detection contact fixed on the piston rod, and the two detection contacts are directly connected with the contacts of the first auxiliary switch and the second auxiliary switch through the two connecting rods respectively.
the difference with embodiment 1 is that, be equipped with two detection module cooperation structures on the output connecting rod, two detection module cooperation structures set up along output connecting rod length direction interval, and two detection module cooperation structures are the detection contact of fixing on the output connecting rod, and two detection contacts are directly connected with the contact of first auxiliary switch and second auxiliary switch through two connecting rods respectively.
Embodiment 4 of the load simulation apparatus for an operating mechanism of the present invention:
different from the embodiment 1, the position detection module comprises a microwave detector, the microwave detector is installed on the operating mechanism installation frame, and the detection module matching structure is a transmission hole formed in the piston rod. The microwave detector is provided with two microwave detectors, when the output connecting rod moves to drive the transmission hole to reach the head end and the tail end of the movement path, the microwaves of the microwave detector can penetrate through the transmission hole to be transmitted to the operating mechanism mounting frame, the microwaves can only be transmitted to the piston rod at other times, the microwave detector can reflect whether the output connecting rod moves to a set position according to the microwave reflection condition, and then the measuring signal is transmitted to the control module.
different from embodiment 1, only one auxiliary switch is provided in this embodiment, and the auxiliary switch is fixed on the mounting bracket, and in this embodiment, the number of nodes of the auxiliary switch is the same as the sum of the number of nodes of the first auxiliary switch and the second auxiliary switch in embodiment 1.
The contact of the auxiliary switch is connected with the extension section through a connecting rod, and the operating mechanism mounting frame is of a plate-shaped structure and is vertically fixed on the underframe and used for mounting and fixing the operating mechanism to be detected.
In this embodiment, the output link is exposed to the environment, and no protective structure is provided on the outside of the output link.
unlike embodiment 1, the cylindrical frame body is not provided with the observation window, and the auxiliary switch is mounted on the horizontally opposite side of the cylindrical frame body.
different from the embodiment 1, the load simulation device of the operating mechanism is provided with a microwave detector besides a first auxiliary switch and a second auxiliary switch, and the microwave detector is arranged on the upper surface of the cylindrical frame body. In this embodiment, three position detection modules are provided.
The detection module matching mechanism comprises an extension section and a transmission hole, the transmission hole is arranged on the piston rod and is matched with the microwave detector, and whether the displacement of the output connecting rod meets the requirement of opening and closing in place or not is reflected through the reflection condition of microwaves. Meanwhile, the auxiliary switch and the microwave detector are arranged, so that mutual inspection can be realized, and the finally obtained measurement result is more accurate.
different from the embodiment 1, the detection module matching structure is a long circular hole arranged on the piston rod, the length direction of the long circular hole extends along the axial direction of the piston rod, and one end, far away from the first auxiliary switch contact, of the first connecting rod extends into the long circular hole of the piston rod and is in sliding fit with the long circular hole.
different from the embodiment 1, the mounting frame is of an L-shaped structure and is provided with a vertical plate surface vertically mounted on the base and a horizontal plate surface extending along the horizontal direction, the load simulator is vertically mounted on the lower side surface of the horizontal plate surface, the mounting frame of the operating mechanism is a cylindrical frame body, the lower end of the cylindrical frame body is mounted on the upper side surface of the horizontal plate surface, and a piston rod of the load simulator penetrates through the horizontal plate surface, penetrates into the cylindrical frame body and is connected with the output connecting rod. The operating mechanism is arranged on an installation plate at the upper end of the cylindrical frame body, and the output connecting rod penetrates through the installation plate to be connected with an output swing arm in the operating mechanism.
The output connecting rod is positioned in the cylindrical frame body, and the position detection module is arranged on the peripheral surface of the cylindrical frame body.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (9)
1. An operating mechanism load simulation device, comprising:
a frame;
the load simulator is arranged on the rack and comprises a load cylinder and a piston rod;
The operating mechanism mounting frame is positioned on the rack and used for fixedly mounting the operating mechanism to be detected;
the output connecting rod is used for being in transmission connection with an output part of the operating mechanism to be detected and the piston rod;
it is characterized by also comprising:
the detection module adapting structure is positioned on the output connecting rod and/or the piston rod;
the position detection module is matched with the detection module adaptive structure to measure the displacement of the output connecting rod;
and the control module is used for being connected with the position detection module and the operating mechanism and controlling the operating mechanism to stop when receiving the abnormal signal fed back by the position detection module.
2. The actuator load simulator of claim 1, wherein the sensing module adapter structure is located on the piston rod.
3. The actuator load simulator of claim 1 wherein there are at least two position sensing modules.
4. The actuator load simulator of claim 1, wherein the position sensing module includes an auxiliary switch having a contact coupled to a link rod that engages the sensing module adapter structure and swings upon actuation of the output link.
5. The operating mechanism load simulator of claim 4, wherein the piston rod is hinged to the output link, and a hinge shaft at the hinge point of the piston rod and the output link has an extension section extending outward along one axial end, and the extension section forms a detection module adapting structure in transmission connection with the connecting rod.
6. The operating mechanism load simulation device according to claim 1 or 2, wherein the position detection module comprises two auxiliary switches, contacts of the two auxiliary switches are in transmission connection through a parallelogram linkage, contacts of the two auxiliary switches are respectively connected with two swing rods of the parallelogram linkage, one swing rod of the parallelogram linkage is connected with the output link and drives the movable contact to rotate when the output link is operated.
7. The operating mechanism load simulation device according to any one of claims 1 to 5, wherein the frame comprises a mounting frame of a plate structure, the load simulator is horizontally mounted on one side of the mounting frame, the operating mechanism mounting frame is a cylindrical frame body and is mounted on the other side of the mounting frame, the piston rod penetrates through the mounting frame and extends into the cylindrical frame body, and one end of the cylindrical frame body, which is far away from the mounting frame, is used for mounting the operating mechanism to be detected.
8. The actuator load simulator of claim 7, wherein the position sensing module is mounted on the tubular frame.
9. The actuator load simulator of claim 8, wherein the position sensing module is mounted on an upper surface of the tubular frame, and viewing windows are provided on horizontally opposite sides of the tubular frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010549371.0A CN111855170A (en) | 2020-06-16 | 2020-06-16 | Load simulator of operating mechanism |
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| CN202010549371.0A CN111855170A (en) | 2020-06-16 | 2020-06-16 | Load simulator of operating mechanism |
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| CN202010549371.0A Withdrawn CN111855170A (en) | 2020-06-16 | 2020-06-16 | Load simulator of operating mechanism |
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