CN214541994U - Three-position switch operating mechanism - Google Patents
Three-position switch operating mechanism Download PDFInfo
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- CN214541994U CN214541994U CN202120035767.3U CN202120035767U CN214541994U CN 214541994 U CN214541994 U CN 214541994U CN 202120035767 U CN202120035767 U CN 202120035767U CN 214541994 U CN214541994 U CN 214541994U
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Abstract
The utility model provides a three station switch operating mechanisms, include: a frame; the output end of the driving motor is provided with a driving gear; one end of the screw rod is provided with a first gear which is in meshing transmission with the driving gear; the nut sliding block is in threaded connection with the lead screw, and a guide structure is arranged on the rack; the first chain wheel is directly or rotationally arranged on the rack through a first rotating shaft; the second chain wheel is directly or rotationally arranged on the rack through a second rotating shaft; the chain is arranged on the first chain wheel and the second chain wheel and fixed with the nut sliding block so as to drive the first chain wheel and the second chain wheel to rotate when the nut sliding block moves left and right; a first output structure is arranged on the first chain wheel or the first rotating shaft; and/or a second output structure is arranged on the second chain wheel or the second rotating shaft; the nut sliding block is provided with a stretching structure which stretches out of the rack to facilitate observation. The extending structure moves along with the nut and the slide block in a left-right direct motion mode, corresponds to the direct motion of the three-position switch moving contact, and can visually judge the position of the three-position switch moving contact outside the rack.
Description
Technical Field
The utility model relates to an operating mechanism technical field, concretely relates to three station switch operating mechanisms.
Background
The direct-acting three-position switch of the gas-filled tank is arranged in a closed gas tank, and an operating mechanism is arranged outside the gas tank, so that the operating mechanism can not directly convert linear transmission into circular motion according to the position of a moving contact of the three-position switch, but through gear and worm and gear transmission, the universal problem that the position of the moving contact of the three-position switch can not be directly displayed, blind operation is approximate, and the requirements of strict and complicated five-prevention interlocking and eighteen new measures are difficult to adapt is caused, therefore, the operating mechanism capable of visually displaying the position of the moving contact of the three-position switch in an outside-tank mechanism is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can judge three station switch operating mechanism of three station switch moving contact positions directly perceived.
In order to achieve the above object, the utility model provides a three-position switch operating mechanism adopts following technical scheme:
three station switch operating mechanism includes:
a frame;
the driving motor is arranged on the rack, and the output end of the driving motor is provided with a driving gear;
the screw rod is rotatably arranged on the rack, one end of the screw rod is provided with a first gear, the first gear is in meshing transmission with the driving gear, and the rotation axis of the screw rod is defined to extend along the left-right direction;
the nut sliding block is connected to the lead screw in a threaded mode, and a guide structure for guiding the nut sliding block is arranged on the rack so that the nut sliding block can move left and right along the lead screw when the lead screw rotates;
the first chain wheel is directly and rotatably arranged on the rack or a first rotating shaft is rotatably arranged on the rack, the first chain wheel is rotatably arranged on the first rotating shaft in a rotation stopping way, and the rotating axis of the first chain wheel extends along the front-back direction;
the second chain wheel is directly and rotatably arranged on the rack or a second rotating shaft is rotatably arranged on the rack, the second chain wheel is rotatably arranged on the second rotating shaft in a rotation stopping way, the rotating axis of the second chain wheel also extends along the front-back direction, and the second chain wheel and the first chain wheel are arranged at a left-right interval;
the chain is fixedly connected with the nut sliding block through a fastener so as to drive the chain to rotate when the nut sliding block moves leftwards and rightwards, and further drive the first chain wheel and the second chain wheel to rotate;
the first output structure is used for outputting the torque of the three-station switch operating mechanism; and/or a second output structure for outputting the torque of the three-station switch operating mechanism is arranged on the second chain wheel or the second rotating shaft;
wherein, be provided with on the nut slider and be used for stretching out the outside structure that stretches out in order to conveniently observe of frame.
The beneficial effects of the above technical scheme are that: the driving gear arranged at the output end of the driving motor is in meshing transmission with the first gear at one end of the screw rod, so that the screw rod can be driven to rotate; the first chain wheel or the first rotating shaft is provided with a first output structure for outputting the torque of the three-position switch operating mechanism, and/or the second chain wheel or the second rotating shaft is provided with a second output structure for outputting the torque of the three-position switch operating mechanism, so that the torque of the three-position switch operating mechanism can be output through the first output structure and/or the second output structure, the moving contact of the three-position switch acts, and the switching among the three positions of isolation, grounding and conduction is realized.
Meanwhile, the nut sliding block is provided with a protruding structure which is used for protruding outside the rack to facilitate observation, the position of the protruding structure represents the position of the nut sliding block, the position of the nut sliding block reflects the rotation form of the chain, and the rotation of the chain corresponds to the rotation angle of the first output structure and/or the second output structure, so that the position of the movable contact of the three-position switch corresponds to the position of the movable contact of the three-position switch, and the movable contact of the three-position switch is isolated, grounded or conducted.
Therefore, the position of the movable contact of the three-position switch can be judged by observing the position of the extending structure outside the rack, and the extending structure directly moves left and right along with the nut and the sliding block and is in one-to-one correspondence with the directly moving action of the movable contact of the three-position switch, so that the judgment is very visual.
Further, for the setting of the frame and the installation of first sprocket and second chain, the frame includes first mounting panel, and first mounting panel is located the rear side of lead screw, and first sprocket and second sprocket are all installed on first mounting panel.
Further, for the output of the convenient moment and the observation and the removal of convenient structure of stretching out, the frame still includes the second mounting panel, and the second mounting panel is located the front side of lead screw, the front end of first pivot and second pivot and the structure of stretching out all wear out the second mounting panel, supply the perforation that the structure of stretching out wore out to be the slot hole of extending about for on the second mounting panel.
Furthermore, in order to simplify the form of the extending structure and facilitate processing and manufacturing, the extending structure is an extending shaft fixed on the nut sliding block, and the axis of the extending shaft extends along the front-back direction.
Furthermore, in order to enable the three-position switch to be kept at the corresponding position when the extension shaft moves in place, three travel switches which are arranged at left and right intervals are fixed on the second mounting plate, the three travel switches respectively correspond to the isolation position, the conduction position and the grounding position of the three-position switch, and the three travel switches are arranged on the upper side or the lower side of the long hole and are respectively electrically connected with the driving motor so as to be triggered when the extension shaft moves to the corresponding position, and then the driving motor is controlled to be powered off.
Furthermore, in order to conveniently and manually control the operating mechanism in the absence of electric power, a second gear is installed at the other end of the screw rod, an input gear in meshing transmission with the second gear is installed on the rack, and the input gear is used for manually driving the input gear to rotate.
Further, for the convenience of manually controlling the operating mechanism in the absence of electric power, and the convenient manual operation, the second gear is installed to the other one end of lead screw, still installs the manual input shaft that the axis of rotation extends along the fore-and-aft direction on the first mounting panel, and input gear is installed to the last spline of manual input shaft, and input gear and second gear meshing transmission and both are bevel gear, and the second mounting panel is worn out to the front end of manual input shaft.
Furthermore, in order to facilitate rotation, the first rotating shaft, the second rotating shaft and the manual input shaft are rotatably mounted on the second mounting plate through bearings respectively.
Further, in order to more conveniently know the operation state of the three-position switch operating mechanism, the three-position switch operating mechanism further comprises a first auxiliary switch and a second auxiliary switch which are installed on the second installation plate, the nut slider corresponds to an isolation station of the three-position switch when being located in the middle of the lead screw, and corresponds to a conduction station and a grounding station of the three-position switch when being located at the left end and the right end of the lead screw respectively, the first auxiliary switch and the second auxiliary switch are respectively arranged at the left end and the right end of the second installation plate, a first crank arm is connected to a connecting shaft of the first auxiliary switch, a first connecting plate is hinged to the first crank arm, a second crank arm is connected to a connecting shaft of the second auxiliary switch, a second connecting plate is hinged to the second crank arm, a guide structure for guiding the left-right movement and the left-right movement of the first connecting plate and the second connecting plate is respectively arranged on the second installation plate, and the three-position switch operating mechanism further comprises a guide structure, one end of which is fixedly connected to the second installation plate, The other end of the first spring is connected to the first connecting plate, the three-station switch operating mechanism further comprises a second spring, one end of the second spring is fixedly connected to the second mounting plate, the other end of the second spring is connected to the second connecting plate, and the first connecting plate and the second connecting plate are respectively provided with a matching structure which is used for being matched with the nut sliding block in a pushing mode when the nut sliding block moves in place.
Furthermore, in order to facilitate the installation of the first spring and the second spring, the first spring and the second spring are both springs with hooks at two ends, a hanging shaft is fixed on the second installation plate, and one ends of the first spring and the second spring are respectively hooked on the hanging shaft.
Drawings
Fig. 1 is a perspective view of a three-position switch operating mechanism of the present invention;
fig. 2 is a front view of the three-position switch operating mechanism of the present invention;
fig. 3 is a left side view of the three-position switch operating mechanism of the present invention;
fig. 4 is a perspective view of a transmission part in the three-position switch operating mechanism of the present invention;
fig. 5 is a front view of a transmission portion of the three-position switch operating mechanism of the present invention.
In the figure: 1-a first mounting plate; 2-a second mounting plate; 201-long hole; 3-driving a motor; 4-driving the gear; 5-a first gear; 6-a lead screw; 7-a nut slider; 8-extending shaft; 9-a first sprocket; 10-a second sprocket; 11-a chain; 12-a first bearing seat; 13-a second bearing block; 14-input gear; 15-a second gear; 16-a first shaft; 17-a second shaft; 18-manual input shaft; 19-a first travel switch; 20-a second travel switch; 21-third travel switch; 22-a first auxiliary switch; 23-a first crank arm; 24-a first tie sheet; 241-a first bending plate; 25-a first guide stud; 26-a first spring; 27-hanging a shaft; 28-a second spring; 29-a second guide stud; 30-a second tie sheet; 301-a second bending plate; 31-second crank arm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to 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 utility model discloses an embodiment of well three station switch operating mechanisms is shown in figure 1, including the frame, the frame includes first mounting panel 1 and second mounting panel 2, and first mounting panel 1 is located the rear side of second mounting panel 2. As shown in fig. 1, 3, and 4, the first mounting plate 1 is U-shaped, the notch of the U-shaped groove is disposed rearward, and the upper and lower sides are connected with flanges extending away from each other. A driving motor 3 is arranged in the U-shaped groove on the first mounting plate 1, and a driving gear 4 is arranged at the output end of the driving motor 3.
As shown in fig. 4 and 5, a first bearing seat 12 and a second bearing seat 13 are fixed to the front side surface of the first mounting plate 1 and spaced left and right, a lead screw 6 is rotatably mounted on the first bearing seat 12 and the second bearing seat 13, and a rotation axis of the lead screw 6 extends in the left-right direction. A first gear 5 is installed at the left end of the screw rod 6, and the first gear 5 is in meshing transmission with the driving gear 4 so as to drive the screw rod 6 to rotate by the driving motor 3. In order to facilitate manual operation in the absence of electric power, a second gear 15 is mounted at the right end of the screw 6, an input gear 14 with a rotation axis extending in the front-rear direction is mounted on the first mounting plate 1, the input gear 14 and the second gear 15 are in meshing transmission and are both bevel gears, and the input gear 14 is used for manual driving rotation.
As shown in fig. 4 and 5, the screw rod 6 is connected with the nut slider 7 through a thread, the first mounting plate 1 is provided with a guide structure (not shown in the figure) for guiding the nut slider 7, and the specific form of the guide structure may be various, for example, a guide rail may be provided on the nut slider 7, and a guide groove may be provided on the first mounting plate 1. The nut runner 7 and the spindle 6 thus form a spindle-nut mechanism, so that the nut runner 7 can be moved to the left and right along the spindle 6 when the spindle 6 is rotated. The nut sliding block 7 is further provided with a protruding structure which is used for protruding outside the rack to facilitate observation, the protruding structure in the embodiment is a protruding shaft 8 fixed on the nut sliding block 7, and the axis of the protruding shaft 8 extends in the front-back direction.
Referring to fig. 1, 2 and 3, the first mounting plate 1 is rotatably mounted with a first rotating shaft 16, the first rotating shaft 16 is rotatably mounted with a first sprocket 9, and referring to fig. 4 and 5, the rotating axis of the first sprocket 9 extends in the front-rear direction. The first mounting plate 1 is further rotatably provided with a second rotating shaft 17, a second chain wheel 10 is rotatably arranged on the second rotating shaft 17, the rotating axis of the second chain wheel 10 also extends in the front-back direction, and the second chain wheel 10 and the first chain wheel 9 are arranged in a left-right spaced mode. The second chain wheel 10 and the first chain wheel 9 are provided with a chain 11, the chain 11 is fixedly connected with the nut sliding block 7 through a fastener (such as a bolt or a rivet) so as to drive the chain 11 to rotate when the nut sliding block 7 moves left and right, and further drive the first chain wheel 9 and the second chain wheel 10 to rotate.
As shown in fig. 1, 2 and 3, the second mounting plate 2 is located at the front side of the screw 6, and the overall shape of the second mounting plate 2 includes a U-shaped plate and a connecting edge connected to the lower side of the U-shaped plate and extending downward, so that the second mounting plate 2 has a U-shaped groove with a notch facing backward and a right-angle groove facing forward.
The front ends of the first rotating shaft 16, the second rotating shaft 17, the manual input shaft 18 and the front end of the extension shaft 8 all penetrate through the second mounting plate 2, and a through hole for the extension shaft 8 to penetrate through on the second mounting plate 2 is a long hole 201 extending left and right so as to facilitate left and right movement of the extension shaft 8. As shown in fig. 1 and 2, the second mounting plate 2 is marked with words such as "conducting", "isolating", "grounding", and the like, and the nut slider 7 corresponds to an isolating station of the three-station switch when located at the middle position of the lead screw 6, and corresponds to a conducting station and a grounding station of the three-station switch when located at the left and right ends of the lead screw 6, respectively, so that for the extension shaft 8, when the extension shaft 8 is located at the middle position of the long hole 201, it means that the three-station switch is located at the isolating station, and when located at the left end, it means that the three-station switch is located at the conducting station, and when located at the right end, it means that the three-station switch is located at the grounding station.
The second mounting plate is further fixed with three first travel switches 19, second travel switches 20 and third travel switches 21 which are arranged at left and right intervals, the three travel switches respectively correspond to conducting stations, isolating stations and grounding stations of the three-station switches, the three travel switches are arranged on the upper side of the long hole 201 and are respectively electrically connected with the driving motor 3 so as to be triggered when the extension shaft 8 moves to the corresponding position, and then the driving motor 3 is controlled to be powered off, so that the three-station switches are kept at the corresponding stations.
As shown in fig. 1, 2 and 3, the three-position switch operating mechanism further includes a first auxiliary switch 22 and a second auxiliary switch (not shown in the figure) mounted on the second mounting plate 2, the first auxiliary switch 22 and the second auxiliary switch are located at the rear side of the connecting edge at the bottom of the second mounting plate 2, and the first auxiliary switch 22 and the second auxiliary switch are respectively disposed at the left end and the right end of the second mounting plate 2.
The connecting shaft of the first auxiliary switch 22 is connected with a first crank arm 23, the first crank arm 23 is hinged with a first connecting plate 24, the connecting shaft of the second auxiliary switch is connected with a second crank arm 31, the second crank arm 31 is hinged with a second connecting plate 30, the second mounting plate 2 is respectively provided with a guide structure for guiding the left and right movement of the first connecting plate 24 and the second connecting plate 30, in the embodiment, the guide structure is a first guide stud 25 and a second guide stud 29, the first guide stud 25 is fixed on the second mounting plate 2 and penetrates through a long hole in the first connecting plate 24, and the second guide stud 29 is also fixed on the second mounting plate 2 and penetrates through a long hole in the second connecting plate 30.
The three-position switch operating mechanism further comprises a first spring 26, one end of which is fixedly connected to the second mounting plate 2, and the other end of which is connected to the first connecting plate 24, and a second spring 28, one end of which is fixedly connected to the second mounting plate 2, and the other end of which is connected to the second connecting plate 30. Specifically, the first spring 26 and the second spring 28 are both springs with hooks at two ends, a hanging shaft 27 is fixed on the second mounting plate 2, one end of the first spring 26 and one end of the second spring 28 are respectively hung on the hanging shaft 27, and the other end of the first spring 26 and the other end of the second spring 28 are respectively hung on the corresponding connecting plate, so that a hook edge (not marked in the figure) is formed on the connecting plate by bending.
The first connecting plate 24 and the second connecting plate 30 are respectively provided with a matching structure which is used for pushing the nut slider 7 to match when the nut slider 7 moves in place, specifically, as shown in fig. 2 and fig. 3, the matching structure on the first connecting plate 24 is a first bending plate 241, the first bending plate 241 penetrates through the second mounting plate 2 and extends into the left end of the screw rod 6, when the nut slider 7 moves to the left end, the first bending plate 241 can be pushed to move leftwards, then the connecting shaft of the first auxiliary switch 22 is rotated through the first crank arm 23, the first auxiliary switch 22 is switched on, and therefore the running state of the three-position switch operating mechanism can be conveniently known through an electric control system. During the leftward movement of the first bending plate 241, the first spring 26 is elongated to provide a return power for the return of the first auxiliary switch 22. Similarly, the matching structure of the second connecting plate 30 is a second bending plate 301, the second bending plate 301 passes through the second mounting plate 2 and extends into the right end of the screw rod 6, and the nut slider 7 is in pushing matching with the screw rod when moving to the right end, and the principle of the nut slider is the same as that of the first auxiliary switch 22.
The utility model provides a three station switch operating mechanism is when using, because the position of projecting shaft 8 has represented nut slider 7's position, nut slider 7's position has reflected the rotation form of chain 11, and what chain 11's rotation corresponded is the turned angle that first pivot 16 and second pivot 17 located, and what consequently corresponded is the position that three station switch moving contact was located, is in isolation, or ground connection, or switches on. Therefore, the position of the movable contact of the three-position switch can be judged by observing the position of the extension shaft 8 outside the rack, and the extension shaft 8 directly moves left and right along with the nut and the slide block 7 and is in one-to-one correspondence with the direct movement of the movable contact of the three-position switch, so that the judgment is very visual.
The utility model discloses a drive design that lead screw nut and sprocket chain combined together changes the rotary motion between the last gear of operating mechanism now into the linear motion of nut slider 7, has not only realized the structural simplification, the while also effectual cost reduction. And simultaneously, the utility model discloses the overall arrangement of spare part is carried out to the shape of two mounting panels of make full use of, for example, first turning arm, first even board, first spring, second even parts such as board and second turning arm all set up at the right angle inslot, and overall structure is compacter, has reduced drive disk assembly and overall size, and the structure is simplified. In addition, three travel switches are arranged to ensure that the three-position switch is kept at a corresponding position, two auxiliary switches are arranged to know the positions of the operating mechanism and the three-position switch from electrical control, in addition, the two bearing seats can also carry out mechanical limiting on the nut and slide block 7, no-over-position operation is realized, and the flexibility is high.
In other embodiments of the three-position switch operating mechanism, two hanging shafts may be fixed on the second mounting plate to respectively hook two springs, or no hanging shaft is provided, a fixing plate may be vertically fixed on the second mounting plate, one ends of the first spring and the second spring are respectively welded and fixed on the fixing plate, or the first connecting plate may be connected to the right end of the first spring, a spring seat is fixed on the second mounting plate, the left end of the first spring is sleeved on the spring seat, at this time, when the first connecting plate moves to the left, the first spring is compressed, and the second spring is provided in the same form as the first spring.
In other embodiments of the three-position switch operating mechanism, the guide structure on the second mounting plate for guiding the first connecting plate and the second connecting plate may not be a guide stud, but a guide rail is provided on the first connecting plate and the second connecting plate, and a corresponding guide groove is provided on the second mounting plate.
In other embodiments of the three-position switch operating mechanism, the matching structures arranged on the first connecting plate and the second connecting plate and used for being matched with the nut sliding block in a pushing manner when the nut sliding block moves in place may not be integrally connected bending plates, but are baffle plates or stop pins which are separately and fixedly connected with the connecting plates.
In other embodiments of the three-position switch operating mechanism, the first auxiliary switch and the second auxiliary switch may not be provided.
In other embodiments of the three-position switch operating mechanism, the first rotating shaft, the second rotating shaft and the manual input shaft can only pass through the second mounting plate without mounting a bearing under the condition of not influencing the rotation output.
In other embodiments of the three-position switch operating mechanism, the rotation axis of the input gear may also extend in the left-right direction, and at this time, the input gear and the second gear are both straight gears, and only the first mounting plate needs to be provided with a mounting structure for conveniently mounting the manual input shaft.
In other embodiments of the three-position switch operating mechanism, the second gear and the input gear may not be provided, and the operating mechanism does not have a manual operation function.
In other embodiments of the three-position switch operating mechanism, three travel switches may be disposed on the lower side of the slot.
In other embodiments of the three-position switch operating mechanism, the three-position switch can be maintained at the corresponding position directly by controlling the driving motor without arranging a travel switch.
In other embodiments of the three-position switch operating mechanism, the extension structure may also be an extension block or an extension plate.
In other embodiments of the three-position switch operating mechanism, the first rotating shaft and the second rotating shaft mounted on the first mounting plate may not pass through the second mounting plate, that is, the first rotating shaft and the second rotating shaft are relatively short, at this time, a first output shaft needs to be rotatably mounted on the first rotating shaft or the first sprocket, the first output shaft passes through the second mounting plate so as to be conveniently in transmission fit with the three-position switch moving contact, and similarly, a second output shaft needs to be rotatably mounted on the second rotating shaft or the second sprocket, and the second output shaft passes through the second mounting plate so as to be conveniently in transmission fit with the three-position switch moving contact.
In other embodiments of the three-position switch operating mechanism, the second mounting plate may not be provided in the case that the travel switch, the auxiliary switch, or the first output shaft and the second output shaft are not required to be provided, at this time, the first rotating shaft or the first chain wheel itself directly constitutes the first output structure, and the second rotating shaft or the second chain wheel itself directly constitutes the second output structure.
In other embodiments of the three-position switch operating mechanism, the first chain wheel and the second chain wheel may both be chain wheels with their own shafts, and there is no first rotating shaft and no second rotating shaft, and the two chain wheels are directly rotatably mounted on the first mounting plate through their own shafts, and the first chain wheel itself directly constitutes the first output structure, and the second chain wheel itself directly constitutes the second output structure.
In other embodiments of the three-position switch operating mechanism, the first output structure may be provided only on the first sprocket or the first rotating shaft, that is, the operating mechanism has only one output structure, or the second output structure may be provided only on the second sprocket or the second rotating shaft, and likewise, the operating mechanism has only one output structure.
In other embodiments of the three-position switch operating mechanism, the form of the frame is not limited to the form of the first mounting plate, and any frame capable of conveniently mounting the first chain wheel and the second chain wheel can be used.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Three station switch operating mechanisms, its characterized in that includes:
a frame;
the driving motor is arranged on the rack, and the output end of the driving motor is provided with a driving gear;
the screw rod is rotatably arranged on the rack, one end of the screw rod is provided with a first gear, the first gear is in meshing transmission with the driving gear, and the rotation axis of the screw rod is defined to extend along the left-right direction;
the nut sliding block is connected to the lead screw in a threaded mode, and a guide structure for guiding the nut sliding block is arranged on the rack so that the nut sliding block can move left and right along the lead screw when the lead screw rotates;
the first chain wheel is directly and rotatably arranged on the rack or a first rotating shaft is rotatably arranged on the rack, the first chain wheel is rotatably arranged on the first rotating shaft in a rotation stopping way, and the rotating axis of the first chain wheel extends along the front-back direction;
the second chain wheel is directly and rotatably arranged on the rack or a second rotating shaft is rotatably arranged on the rack, the second chain wheel is rotatably arranged on the second rotating shaft in a rotation stopping way, the rotating axis of the second chain wheel also extends along the front-back direction, and the second chain wheel and the first chain wheel are arranged at a left-right interval;
the chain is fixedly connected with the nut sliding block through a fastener so as to drive the chain to rotate when the nut sliding block moves leftwards and rightwards, and further drive the first chain wheel and the second chain wheel to rotate;
the first output structure is used for outputting the torque of the three-station switch operating mechanism; and/or a second output structure for outputting the torque of the three-station switch operating mechanism is arranged on the second chain wheel or the second rotating shaft;
wherein, be provided with on the nut slider and be used for stretching out the outside structure that stretches out in order to conveniently observe of frame.
2. The three-position switch operating mechanism of claim 1, wherein the frame includes a first mounting plate positioned behind the lead screw, the first sprocket and the second sprocket each being mounted to the first mounting plate.
3. The three-position switch operating mechanism according to claim 2, wherein the frame further comprises a second mounting plate, the second mounting plate is located on the front side of the screw rod, the front ends of the first rotating shaft and the second rotating shaft and the extension structure penetrate through the second mounting plate, and a through hole for the extension structure to penetrate through is a long hole extending left and right in the second mounting plate.
4. The three-position switch operating mechanism according to claim 3, wherein the extension structure is an extension shaft fixed to the nut block, and an axis of the extension shaft extends in a front-rear direction.
5. The three-position switch operating mechanism according to claim 4, wherein three travel switches are fixed on the second mounting plate and spaced left and right, the three travel switches respectively correspond to the isolation position, the conduction position and the grounding position of the three-position switch, and the three travel switches are disposed on the upper side or the lower side of the long hole and respectively electrically connected to the driving motor so as to be triggered when the extension shaft moves to the corresponding position, thereby controlling the driving motor to be powered off.
6. The three-position switch operating mechanism according to any one of claims 1 to 5, wherein a second gear is mounted at the other end of the screw, an input gear in meshing transmission with the second gear is mounted on the frame, and the input gear is used for manual driving rotation.
7. The three-position switch operating mechanism according to any one of claims 3 to 5, wherein a second gear is mounted at the other end of the screw, a manual input shaft with a rotation axis extending in the front-rear direction is further mounted on the first mounting plate, an input gear is mounted on the manual input shaft in a rotation stopping manner, the input gear and the second gear are in meshing transmission and are both bevel gears, and the front end of the manual input shaft penetrates out of the second mounting plate.
8. The three-position switch operating mechanism of claim 7, wherein the first shaft, the second shaft and the manual input shaft are rotatably mounted to the second mounting plate by bearings, respectively.
9. The three-position switch operating mechanism according to any one of claims 3 to 5, further comprising a first auxiliary switch and a second auxiliary switch mounted on the second mounting plate, wherein the nut slider corresponds to an isolation station of the three-position switch when located at a middle position of the lead screw, and corresponds to a conduction station and a grounding station of the three-position switch when located at left and right ends of the lead screw, the first auxiliary switch and the second auxiliary switch are respectively disposed at left and right ends of the second mounting plate, a first crank arm is connected to a connecting shaft of the first auxiliary switch, a first connecting plate is hinged to the first crank arm, a second crank arm is connected to a connecting shaft of the second auxiliary switch, a second connecting plate is hinged to the second crank arm, and a guide structure for guiding left and right movement of the first connecting plate and the second connecting plate is respectively disposed on the second mounting plate, the three-station switch operating mechanism further comprises a first spring, one end of the first spring is fixedly connected to the second mounting plate, the other end of the first spring is connected to the first connecting plate, one end of the second spring is fixedly connected to the second mounting plate, the other end of the second spring is connected to the second connecting plate, and the first connecting plate and the second connecting plate are respectively provided with a matching structure which is used for being matched with the nut sliding block in a pushing mode when the nut sliding block moves in place.
10. The three-position switch operating mechanism according to claim 9, wherein the first spring and the second spring are both springs having hooks at both ends, the second mounting plate is fixed with a hanging shaft, and one ends of the first spring and the second spring are respectively hooked on the hanging shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120035767.3U CN214541994U (en) | 2021-01-07 | 2021-01-07 | Three-position switch operating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120035767.3U CN214541994U (en) | 2021-01-07 | 2021-01-07 | Three-position switch operating mechanism |
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| CN214541994U true CN214541994U (en) | 2021-10-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242472A (en) * | 2021-11-05 | 2022-03-25 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
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2021
- 2021-01-07 CN CN202120035767.3U patent/CN214541994U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242472A (en) * | 2021-11-05 | 2022-03-25 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
| CN114242472B (en) * | 2021-11-05 | 2024-04-16 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
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