CN112117695A - Clutch assembly and pressing plate switching device with same - Google Patents

Abstract

The invention is suitable for the field of power equipment, and discloses a clutch assembly and a pressure plate switching device with the same, wherein the clutch assembly comprises a clutch shaft and a transmission shaft which can be far away from or close to each other, the transmission shaft is used for being connected with an electric drive part and driven by the electric drive part, the clutch shaft is used for being connected with a drive handle and synchronously rotating and moving with the drive handle, a transmission structure which enables the clutch shaft to rotate along with the transmission shaft when the clutch shaft is connected with the transmission shaft is arranged between the transmission shaft and the clutch shaft, and the clutch shaft is normally connected with the transmission shaft through the transmission structure. The pressing plate switching device comprises a pressing plate base, a pressing plate handle, a driving motor and the clutch assembly, wherein the pressing plate handle is rotatably connected to the pressing plate base and can be switched between a switching-in position and a switching-out position. The clutch assembly and the pressing plate switching device with the clutch assembly provided by the invention have two operation modes of manual switching and automatic switching, and meet the actual use requirements.

Description

Clutch assembly and pressing plate switching device with same

Technical Field

The invention belongs to the field of power equipment, and particularly relates to a clutch assembly and a pressing plate switching device with the same.

Background

The electric power secondary operation loop is a link for interconnection and interaction of electric power secondary comprehensive automation equipment and a high-voltage switch operation mechanism, the reliability of the secondary operation loop directly influences the reliability of power grid operation, an electric power pressing plate (also called a pressing plate for short) is a device for switching on or off the electric power secondary operation loop, the switching on and the switching off are realized by rotating a pressing plate handle (namely an operation handle for manually driving the pressing plate to switch on or off) to a switching-in position and a switching-out position, and when the pressing plate handle rotates to the switching-in position, an electrode sheet on the pressing plate handle can be inserted into an electrode contact sheet in a pressing plate base to realize the switching on of the loop.

At present, the clamp plate handle among the prior art generally rotates for manual rotation or rotates through motor drive, and manual operation's clamp plate handle can't realize the automation and the remote control of secondary operation return circuit, and motor drive's clamp plate handle can realize remote control, but because motor drive's structure influence can't manual rotation clamp plate handle, makes the clamp plate handle lose manual control, and need carry out remote control to the clamp plate under some circumstances, need carry out manual operation again to the clamp plate under some circumstances.

Disclosure of Invention

The invention aims to solve at least one of the technical problems and provides a clutch assembly and a pressing plate switching device with the same, which realize two operation modes by utilizing a clutch shaft and a transmission shaft which can be far away from or close to each other, can switch on and off through a driving motor and can also switch on and off manually, thereby meeting the actual use requirements.

The technical scheme of the invention is as follows: a clutch assembly comprises a clutch shaft and a transmission shaft, wherein the clutch shaft and the transmission shaft can be far away from or close to each other, the transmission shaft is used for being connected with an electric driving part and driven by the electric driving part, the clutch shaft is used for being connected with a driving handle and synchronously rotating and moving with the driving handle, a transmission structure which enables the clutch shaft to rotate along with the transmission shaft when the clutch shaft is connected with the transmission shaft is arranged between the transmission shaft and the clutch shaft, and the clutch shaft is normally connected with the transmission shaft through the transmission structure.

The clutch assembly provided by the invention is characterized in that the transmission shaft can be connected with a driving motor (namely an electric driving part), the transmission shaft can be connected with an operating handle (namely the driving handle) of the pressing plate, the transmission structure can enable the clutch shaft to be transmitted along with the transmission shaft when the clutch shaft is connected with the transmission shaft under a normal state (namely under the condition of no operation under the normal state or under a static state or in a state of being kept for a long time), so that the driving motor can drive the operating handle of the pressing plate to realize the putting-in and putting-out action of the pressing plate, when the pressing plate needs to be manually operated, the clutch shaft can be separated from the transmission shaft (for example, the clutch shaft can be axially separated or mutually staggered) firstly when the pressing plate is manually operated, then the operating handle of the pressing plate can be manually operated, the putting-in and putting-out action of the manually operated pressing plate can be realized, and the clutch shaft is separated from, therefore, the manual operation is not affected by the electric driving part.

Optionally, the transmission structure includes a transmission groove and a transmission portion that can extend into the transmission groove, the transmission groove is a non-circular groove, and the transmission portion is a non-cylindrical shape that matches with the transmission groove.

Optionally, the transmission groove is a regular polygon groove, and the cross section of the transmission part is a regular polygon.

Optionally, the side surface of the transmission part is a first inclined surface with a taper, and the side wall of the transmission groove is a second inclined surface matched with the first inclined surface.

Optionally, a positioning hole is formed in the bottom of the transmission groove, and a positioning column used for extending into the positioning hole is connected to the end face of the transmission portion.

Optionally, the transmission groove is arranged on the transmission shaft, and the transmission part is arranged on the clutch shaft; or the transmission groove is arranged on the clutch shaft, and the transmission part is arranged on the transmission shaft.

Optionally, the clutch shaft moves axially with the drive handle and away from or towards the drive shaft.

The invention also provides a pressing plate switching device which comprises a pressing plate base, a pressing plate handle and a driving motor, wherein the pressing plate handle is rotationally connected to the pressing plate base and can be switched between a switching-in position and a switching-out position.

Optionally, the pressing plate base is provided with a mounting hole, the pressing plate handle is provided with a mounting column extending into the mounting hole, and the mounting column is connected to the clutch shaft; and a limiting structure used for limiting the rotation angle of the pressure plate handle or/and a positioning structure used for positioning when the pressure plate handle rotates are/is arranged between the mounting hole and the mounting column.

Optionally, the limiting structure comprises a limiting groove and a limiting convex strip, the limiting groove is arranged on the side wall of the mounting hole, the limiting convex strip is arranged on the periphery of the mounting column, and the limiting convex strip extends into the limiting groove and can rotate in the limiting groove; and/or the positioning structure comprises an input positioning groove, an exit positioning groove and a positioning component, the input positioning groove and the exit positioning groove are arranged at the periphery of the mounting column at intervals, the positioning component is arranged on the side wall of the mounting hole, and the end part of the positioning component can extend into the input positioning groove or the exit positioning groove when the pressing plate handle is switched to the position.

Optionally, two groups of limiting structures are arranged, two limiting grooves are symmetrically arranged on the side wall of the mounting hole, and two limiting convex strips are symmetrically arranged on the periphery of the mounting column; and/or the positioning structure is provided with two groups, the two groups of the input positioning grooves and the two groups of the exit positioning grooves are symmetrically arranged on the periphery of the mounting column, and the two positioning parts are symmetrically arranged on the side wall of the mounting hole.

Optionally, a connecting pin is connected to the mounting column, one end of the connecting pin is connected to the mounting column, and one end of the connecting pin is connected to the clutch shaft; and/or, the pressing plate switching device further comprises a clutch elastic part, one end of the clutch elastic part is connected to the clutch shaft, and the other end of the clutch elastic part is connected to the pressing plate base.

Optionally, the pressure plate handle or/and the pressure plate base is/are provided with a protrusion facilitating rotation of the pressure plate handle relative to the pressure plate base.

Optionally, the pressing plate moving device further comprises a detection component for detecting the moving state of the pressing plate handle.

Optionally, the detection part is including locating separately the piece is received to the light emission of separation and reunion axle both sides, the separation and reunion axle is provided with the detection hole, the light of the piece is sent out the light in the detection hole rotate to the orientation in when sending out the piece pass the detection hole and by receiving the piece is received to the light, send out the piece with receiving the piece all along the axial direction of separation and reunion axle is provided with two, the detection hole is followed the axial direction interval of separation and reunion axle is crisscross to be provided with two.

According to the clutch assembly and the pressing plate throwing-withdrawing device with the same, when the clutch shaft is close to and connected with the transmission shaft, the transmission shaft can be driven through the driving motor, and the transmission structure is utilized to drive the clutch shaft to rotate, so that the pressing plate handle is rotated to realize the automatic throwing-withdrawing action of the pressing plate throwing-withdrawing device; when the clutch assembly and the pressing plate throwing-withdrawing device with the clutch assembly are used for manually throwing and withdrawing, the clutch shaft is pulled away from the transmission shaft, and the pressing plate handle is directly rotated, so that the manual throwing and withdrawing actions of the pressing plate throwing-withdrawing device are realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of a pressing plate ejecting and retracting device provided in an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a clutch assembly according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an automatic retraction of a pressing plate retraction device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a pressing plate retracting device according to an embodiment of the present invention during manual retraction;

FIG. 5 is an exploded view of a platen retraction device (housing not shown) according to an embodiment of the present invention;

FIG. 6 is an exploded view of a platen handle and a platen base of a platen retraction device according to an embodiment of the present invention;

fig. 7 is a bottom view of a pressing plate base of the pressing plate retracting device according to the embodiment of the present invention;

FIG. 8 is a top view of a platen handle of a platen retracting device according to an embodiment of the present invention;

fig. 9 is a sectional view taken at a-a in fig. 4.

In the figure:

10. a drive shaft; 101. a transmission groove; 102. a second inclined plane; 103. positioning holes; 11. a drive motor; 12. a housing;

20. a clutch shaft; 201. a transmission section; 202. a first inclined plane; 203. a positioning column; 204. a detection hole; 2041. a first detection hole; 2042. a second detection hole; 21. a clutch elastic member; 22. a connecting pin; 23. a light emitting member; 231. a first light emitting member; 232. a second light emitting member; 24. a light receiving part; 241. a first light receiving element; 242. a second light receiving element;

30. a platen base; 301. mounting holes; 302. a limiting groove; 303. a positioning member; 3031. a positioning ball; 3032. a positioning spring; 304. an electrode tank; 305. an electrode contact; 306. a protrusion; 307. an electrode column; 308. a nut; 309. positioning holes;

31. a pressure plate handle; 311. mounting a column; 312. limiting convex strips; 313. positioning a groove; 313a, throwing into a positioning groove; 313b, exit positioning groove; 313c, a transition portion; 314. an electrode sheet; 315. a handle flange.

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 specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.

In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal direction", "lateral direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is only for convenience of description and simplification of description based on the orientation or positional relationship shown in the drawings or the conventional placing state or using state, and it does not indicate or imply that the structures, features, devices or elements referred to must have a specific orientation or positional relationship or must not be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments in the present invention will not be described in detail.

Referring to fig. 2, the clutch assembly according to an embodiment of the present invention includes a clutch shaft 20 and a transmission shaft 10, wherein the clutch shaft 20 can be far away from (i.e., separated from) and close to (i.e., connected to) each other, the clutch shaft 20 is used for being connected to a driving handle and rotating and moving in synchronization with the driving handle, the transmission shaft 10 is used for being connected to and driven by an electric driving component, a transmission structure is disposed between the clutch shaft 20 and the transmission shaft 10, when the clutch shaft 20 is close to and coupled to the drive shaft 10, the clutch shaft 20 can be driven synchronously with the drive shaft 10, when the clutch shaft 20 is moved away from the propeller shaft 10 and is disconnected from (i.e., disengaged from) the propeller shaft 10, the clutch shaft 20 is not restricted to the propeller shaft 10, can rotate by itself, and the clutch shaft 20 is connected with the transmission shaft 10 through the transmission structure under the normal condition (under the normal condition, namely, the condition of not doing any operation or under the static condition or the state of keeping for a long time). In a specific application, when the clutch assembly of the present embodiment is applied to a pressing plate moving device, the pressing plate moving device can perform moving actions in two modes, namely, an automatic mode and a manual mode, specifically, referring to fig. 3, the clutch shaft 20 is connected to a pressing plate handle 31 (i.e., a driving handle), the transmission shaft 10 is connected to a driving motor 11 (i.e., an electric driving component), the pressing plate handle 31 is rotatably connected to a pressing plate base 30, and the pressing plate handle 31 can be switched between a moving position and a withdrawing position, when the pressing plate handle 31 is located at the moving position, the pressing plate handle 31 can be connected to an electrical connection node of an electric power secondary circuit (i.e., a moving action), and when the pressing plate handle 31 is rotatably switched to the withdrawing position, the pressing plate handle 31 can be disconnected from the electrical connection node. Under the automatic throw mode of moving back, separation and reunion axle 20 is close to and is connected in transmission shaft 10, and when throwing the action of moving back, transmission shaft 10 rotates under driving motor 11's drive, and transmission shaft 10 passes through drive structure and drives separation and reunion axle 20 and rotate, and then drives clamp plate handle 31 and rotate, realizes clamp plate handle 31 and throws the action of moving back. Referring to fig. 4, in the manual retraction mode, the pressing plate handle 31 is manually pulled away from the transmission shaft 10 to separate the clutch shaft 20 from the transmission shaft 10 and release the connection relationship, so that the transmission shaft 10 and the clutch shaft 20 are separated from each other, and at this time, the pressing plate handle 31 can be manually rotated to perform the manual retraction operation of the pressing plate handle 31. Compared with the prior art, the clutch assembly provided by the embodiment is applied to the pressing plate switching device and can set the automatic switching mode to the conventional mode when in use, that is, the automatic switching mode is generally used to facilitate remote operation, while the manual switching mode is set to the complementary operation mode to facilitate local operation, and when the automatic switching mode cannot be operated under special conditions (such as the automatic switching mode fails), the pressing plate switching device can be rotated to realize manual switching only by pulling the pressing plate handle 31 outwards, so that the pressing plate switching device can be ensured to be always under the control of an operator, and the safety of an electric power secondary operation loop is ensured.

The embodiment of the invention provides an embodiment that the clutch assembly is applied to the pressure plate, and in addition, the clutch assembly provided by the invention can also be applied to other operation equipment, such as a manually operated knob on secondary equipment. The rotating shaft of the manual operating knob can be connected to the transmission shaft 10 of the clutch assembly, the clutch shaft 20 is connected with an electric driving component, and remote automatic operation and manual operation of the manual operating knob can also be realized. In manual operation, the drive shaft 10 can be pulled outwardly a distance to move the drive shaft 10 away from (i.e., away from) the clutch shaft 20, thereby allowing manual rotation of the knob without being affected by the electrically driven components. Besides, the clutch assembly provided by the invention can be applied to other operating equipment of other secondary equipment which is manually operated in a rotating way. The invention is not limited thereto.

As an alternative embodiment of the present embodiment, when the clutch assembly in the present embodiment is applied to the pressure plate engaging and disengaging device, the clutch shaft 20 may rotate with the pressure plate handle 31, and the clutch shaft 20 moves axially with the pressure plate handle 31 to approach or separate from the transmission shaft 10. Specifically, the clutch shaft 20 and the transmission shaft 10 may be always kept on the same axis during the process of approaching and departing the clutch shaft 20 from the transmission shaft 10, so as to ensure the reliability of separation and connection of the two.

Referring to fig. 2 again, as an alternative embodiment of the present embodiment, the transmission structure includes a transmission groove 101 and a transmission portion 201, the transmission portion 201 may extend into the transmission groove 101 and be connected to a sidewall of the transmission groove 101, the transmission groove 101 may be a non-circular groove, the transmission portion 201 may be a non-cylindrical shape matched with the transmission groove 101, and after the non-circular groove and the non-cylindrical transmission portion 201 are connected, the torque of the driving motor 11 may be effectively transmitted, so that the transmission shaft 10 drives the clutch shaft 20 to rotate when rotating, and the relative rotation between the transmission shaft and the clutch shaft 20 may not occur.

With continuing reference to fig. 2, as an alternative embodiment of the driving groove 101 and the driving portion 201 in this embodiment, the driving groove 101 may be a regular polygonal groove, the driving portion 201 may be a regular polygon in cross section, the driving groove 101 in this embodiment is preferably a regular hexagon, the driving portion 201 is preferably a regular hexagon in cross section, the regular hexagonal groove and the driving portion 201 in the regular hexagon can realize synchronous rotation of the clutch shaft 20 and the driving shaft 10 on one hand, and on the other hand, when the clutch assembly of this embodiment is applied to the pressing plate retracting device, in the manual retracting mode of the pressing plate retracting device, the inserting position and the retracting position of the pressing plate handle 31 may correspond to the driving groove 101 and the driving portion 201, that is, the included angle between the inserting position and the retracting position of the pressing plate handle 31 may be 60 degrees (the included angle may be selected according to the shapes of the driving groove 101 and the driving portion 201), thus, when the clutch shaft 20 is moved closer to and connected to the transmission shaft 10 after the manual operation, the transmission part 201 can be smoothly inserted into the transmission groove 101. Of course, in other embodiments, the transmission groove 101 and the transmission portion 201 may have other shapes, for example, both of them are rectangular, triangular or other shapes, and correspondingly, the included angle between the input position and the exit position of the pressing plate handle 31 may also be adjusted to 90 degrees, 120 degrees or other angles.

With continued reference to fig. 2, as an alternative embodiment of the transmission slot 101 and the transmission portion 201 in the present embodiment, a side surface of the transmission portion 201 may be a first inclined surface 202 having a taper, that is, a radius of the transmission portion 201 is gradually decreased toward a direction close to the transmission slot 101 along an axial direction thereof, and a side wall of the transmission slot 101 may be a second inclined surface 102 that is matched with the first inclined surface 202, that is, a radius at a notch of the transmission slot 101 is the largest, and a radius at a slot bottom is the smallest. In this way, during the process that the clutch shaft 20 approaches and is connected to the transmission shaft 10, the tapered first inclined surface 202 and the tapered second inclined surface 102 can guide the transmission part 201 to extend into the transmission groove 101; meanwhile, in the process that the clutch shaft 20 is far away from and separated from the transmission shaft 10, the first inclined surface 202 and the second inclined surface 102 with the tapers can facilitate the separation of the transmission part 201 from the transmission groove 101, so that the transmission part 201 is more smoothly connected with or separated from the transmission groove 101, and the reliability of the clutch assembly is improved.

With reference to fig. 2, as an alternative embodiment of the transmission groove 101 and the transmission portion 201 in the present embodiment, a positioning hole 103 is disposed at a bottom of the transmission groove 101, a positioning post 203 for extending into the positioning hole 103 is connected to an end surface of the transmission portion 201, and the positioning post 203 can move along with the transmission portion 201 and slide in the positioning hole 103 during the process that the transmission portion 201 extends into or withdraws from the transmission groove 101.

In specific application, when the embodiment is applied to a pressing plate feeding and withdrawing device, in the manual feeding and withdrawing process of the pressing plate handle 31, although the clutch shaft 20 is far away from the transmission shaft 10 and the connection relation with the transmission shaft 10 is released, the part of the positioning column 203 can still be positioned in the positioning hole 103 of the transmission groove 101, so that the guidance in the clutch process of the clutch shaft 20 and the transmission shaft 10 is realized, the matching reliability of the clutch shaft 20 and the transmission shaft 10 is improved, and the stability of the pressing plate feeding and withdrawing device in the manual feeding and withdrawing process is ensured. In a specific application, the radius of the positioning hole 103 may be slightly larger than that of the positioning column 203, so as to ensure that the positioning column 203 and the positioning hole 103 rotate relatively after the clutch shaft 20 is far away from the transmission shaft 10, that is, the positioning column 203 and the positioning hole 103 are in an independent state.

With continued reference to fig. 2, further, as an alternative embodiment of the transmission groove 101 and the transmission portion 201 in the present embodiment, the transmission groove 101 may be disposed on the transmission shaft 10, and the transmission portion 201 may be disposed on the clutch shaft 20; alternatively, in another embodiment, the transmission groove 101 may be provided in the clutch shaft 20, and the transmission portion 201 may be provided in the transmission shaft 10.

Referring to fig. 1, an embodiment of the present invention further provides a pressing plate moving-in and moving-out device, which includes a pressing plate base 30, a pressing plate handle 31, a driving motor 11, and the above clutch assembly, wherein the pressing plate handle 31 is rotatably connected to the pressing plate base 30, and the pressing plate handle 31 can be switched between an input position and an exit position, when the pressing plate handle 31 is in the input position, the pressing plate handle 31 can connect an electrical connection node of the power secondary circuit (i.e., input operation), and when the pressing plate handle 31 is rotatably switched to the exit position, the pressing plate handle 31 can disconnect the electrical connection node of the power secondary circuit (i.e., exit operation). In specific application, the pressing plate moving device provided by this embodiment can perform moving actions in two modes, namely, automatic moving and manual moving, specifically, referring to fig. 3, in the automatic moving and retracting mode, the clutch shaft 20 is close to and connected to the transmission shaft 10, during moving and retracting actions, the transmission shaft 10 is driven by the driving motor 11 to rotate, the transmission shaft 10 drives the clutch shaft 20 to rotate through the transmission structure, and then drives the pressing plate handle 31 to rotate, so as to realize moving and retracting actions of the pressing plate handle 31. Referring to fig. 4, in the manual retraction mode, the pressing plate handle 31 is manually pulled away from the transmission shaft 10 to separate the clutch shaft 20 from the transmission shaft 10 and release the connection relationship, so that the transmission shaft 10 and the clutch shaft 20 are independent from each other, and at this time, the pressing plate handle 31 can be manually rotated to perform the manual retraction operation of the pressing plate handle 31. The pressing plate throwing and withdrawing device provided by the embodiment utilizes two states (connection and independence) of the clutch shaft 20 and the transmission shaft 10 to realize automatic and manual throwing and withdrawing actions of the pressing plate throwing and withdrawing device, and has the characteristics of simple structure and convenience in operation.

In specific application, the driving motor 11 may be preferably a speed reducing motor, and the torque of the speed reducing motor is relatively large, so that after the pressing plate handle 31 is switched to the withdrawing position, even if an operator on site accidentally touches the pressing plate handle 31, the pressing plate handle 31 cannot be easily rotated, the pressing plate handle 31 is kept stable, and the stability of the pressing plate withdrawing and withdrawing device is improved. Simultaneously, just because of gear motor's moment of torsion is great, when automatic throwing moves back the unable use of mode, separation and reunion axle 20 in this embodiment can keep away from transmission shaft 10 and rotate along with clamp plate handle 31, and can not receive gear motor's interference when rotating, need not rotate transmission shaft 10 and gear motor when manual throwing moves back promptly, makes things convenient for operating personnel's manual throwing to move back, improves the clamp plate and throws the practicality that moves back the device.

Referring to fig. 6, as an alternative embodiment of the present embodiment, the pressure plate base 30 is provided with a mounting hole 301, the pressure plate handle 31 is provided with a mounting post 311 extending into the mounting hole 301, the mounting post 311 is connected to the clutch shaft 20, and when the pressure plate handle 31 is switched between the input position and the exit position, the mounting post 311 rotates in the mounting hole 301 and drives the clutch shaft 20 to rotate. Further, a limiting structure or/and a positioning structure are/is arranged between the mounting hole 301 and the mounting post 311, the limiting structure is used for limiting the rotation angle of the pressure plate handle 31, and the positioning structure is used for positioning when the pressure plate handle 31 rotates.

With reference to fig. 6, in detail, two sides of the pressing plate base 30 are provided with an electrode groove 304 and an electrode contact 305, the electrode contact 305 is located in the electrode groove 304, the electrode contact 305 is used for communicating with a certain control circuit, one side of the pressing plate handle 31 facing the pressing plate base 30 is provided with an electrode plate 314 for inserting into the electrode groove 304, the two electrode plates 314 are electrically connected with each other, when the pressing plate handle 31 is switched to the throw-in position, the electrode plate 314 is inserted into the electrode groove 304 and contacts with the electrode contact 305, and the two electrode contacts 305 are connected through the electrode plate 314. Limiting structure can restrict the turned angle of clamp plate handle 31, avoids clamp plate handle 31 to rotate excessively and leads to electrode slice 314 and electrode contact 305 rigid collision, can protect electrode contact 305 and electrode slice 314 to a certain extent, prolongs the life of electrode contact 305 and electrode slice 314. Similarly, the positioning structure can position the pressing plate handle 31 when the pressing plate handle 31 rotates to a putting-in position or/and a withdrawing position, so that an operator can be reminded whether to rotate in place or not when the pressing plate handle 31 is manually put in and withdrawn, and excessive rotation or incomplete rotation of the pressing plate handle 31 is avoided.

Referring to fig. 7 to 9, specifically, as an optional implementation manner of the limiting structure in this embodiment, the limiting structure includes a limiting groove 302 and a limiting protrusion 312, the limiting groove 302 is disposed on a side wall of the mounting hole 301 and is communicated with the mounting hole 301, the limiting protrusion 312 is disposed on an outer periphery of the mounting post 311, the limiting protrusion 312 extends into the limiting groove 302 and can rotate in the limiting groove 302, the limiting groove 302 has an input end and an exit end, and a stroke space for the limiting protrusion 312 to rotate is provided between the input end and the exit end. In the concrete application, when the clamp plate handle 31 switches to the input position, the limiting convex strip 312 can be close to or abut against the input end, correspondingly, when the clamp plate handle 31 switches to the exit position, the limiting convex strip 312 can be close to or abut against the exit end, so that the rotation angle of the clamp plate handle 31 can be limited, and the electrode contact 305 and the electrode plate 314 can be protected.

More specifically, in this embodiment, the limiting groove 302 may be an arc-shaped groove, the limiting groove 302 may extend along the axial direction of the mounting hole 301, the outer side surface of the limiting protrusion 312 may be a curved surface, and the limiting protrusion 312 may extend along the axial direction of the mounting post 311, and in the manual operation mode, when the pressing plate handle 31 is pulled outwards, the limiting protrusion 312 may slide along the axial direction of the limiting groove 302. An included angle between the input end and the exit end in the limiting groove 302 may be the same as an included angle between the input position and the exit position of the pressing plate handle 31, which is preferably 60 degrees in the present embodiment.

Further, as one optional implementation manner of the limiting structure in the embodiment, two sets of limiting structures may be provided, so that the force applied to the mounting post 311 during rotation limiting is balanced. Specifically, two sets of limiting structures may be symmetrically disposed, two limiting grooves 302 are symmetrically disposed on the side wall of the mounting hole 301, and two limiting protruding strips 312 are symmetrically disposed on the side wall of the mounting post 311.

Referring to fig. 7 to 9, as an alternative embodiment of the positioning structure in the present embodiment, the positioning structure includes a positioning component 303 and a positioning groove 313, where the positioning groove 313 includes an input positioning groove 313a and an output positioning groove 313b, the input positioning groove 313a and the output positioning groove 313b are disposed at the periphery of the mounting post 311 at intervals, the positioning component 303 is disposed on the sidewall of the mounting hole 301 and avoids the limiting groove 302, and an end of the positioning component 303 may extend out of the sidewall of the mounting hole 301 and may retract into the sidewall of the mounting hole 301 when being stressed. In a specific application, in an initial state, referring to fig. 9, the pressing plate handle 31 is located at the input position, at this time, the end of the positioning member 303 extends into the input positioning groove 313a, and the limiting protruding strip 312 is close to the input end of the limiting groove 302; when the pressing plate handle 31 is switched from the input position to the exit position, the limiting protruding strip 312 rotates in the stroke space of the limiting groove 302, the end of the positioning member 303 first abuts against the transition portion 313c between the input positioning groove 313a and the exit positioning groove 313b (i.e., the non-positioning groove 313 portion of the outer side wall of the mounting post 311), so that the end of the positioning member 303 retracts into the side wall of the mounting hole 301 (i.e., into the positioning hole 309), and then when the pressing plate handle 31 is completely switched to the exit position, the end of the positioning member 303 extends out of the side wall of the mounting hole 301 and into the exit positioning groove 313b, and the limiting protruding strip 312 rotates to be close to the exit end. Thus, when the pressing plate handle 31 is switched, the positioning component 303 can give an obvious feedback to the operator, so as to remind the operator whether the pressing plate handle 31 is rotated in place, and the limiting convex strip 312 and the limiting groove 302 limit the rotation angle of the pressing plate handle 31. Of course, in another embodiment, only the throw-in positioning groove 313a or the withdrawal positioning groove 313b may be provided.

Specifically, as one of optional implementations of the positioning structure in the present embodiment, the positioning component 303 may include a positioning spring 3032 and a positioning ball 3031, a side wall of the mounting hole 301 is provided with the positioning hole 309 (see fig. 9), the positioning spring 3032 is located in the positioning hole 309, one end of the positioning spring 3032 is connected to a hole bottom of the positioning hole 309, and the other end of the positioning spring 3032 is connected to the positioning ball 3031. In other embodiments, the positioning member 303 may be a ball plunger or other positioning member.

Referring to fig. 9, as an alternative embodiment of the positioning structure in this embodiment, two sets of the positioning structures are provided, two sets of the feeding positioning groove 313a and the withdrawing positioning groove 313b are symmetrically disposed on the outer periphery of the mounting post 311, and two positioning components 303 are symmetrically disposed on the side wall of the mounting hole 301. In a specific application, the positioning members 303 are located at two opposite sides of the mounting hole 301, and the limiting grooves 302 are located at two opposite sides of the mounting hole 301, that is, the positioning members 303 and the limiting grooves 302 are arranged at intervals, and correspondingly, the positioning grooves 313 (including the input positioning grooves 313a and the exit positioning grooves 313b) and the limiting convex strips 312 are arranged at intervals.

Referring back to fig. 6 and 7, as an alternative embodiment of the present embodiment, the pressing plate handle 31 and/or the pressing plate base 30 is provided with a protrusion 306. The protrusion 306 may be disposed on a side of the pressure plate handle 31 facing the pressure plate base 30, such that when the pressure plate handle 31 is attached to the pressure plate base 30, the pressure plate handle 31 may not be completely attached to the pressure plate base 30 due to the protrusion 306. In this manner, the frictional force between the platen handle 31 and the platen base 30 can be reduced, thereby facilitating the rotation of the platen handle 31. In this embodiment, the pressing plate base 30 may be rectangular, the protrusions 306 are disposed on the side surface of the pressing plate base 30 facing the pressing plate handle 31, and the six protrusions 306 are uniformly distributed on two sides of the side surface in the length direction. In addition, the pressing plate handle 31 in the embodiment may be rectangular, and the middle of the long side of the pressing plate handle 31 extends outwards to form a handle flange 315, so that the operator can hold the pressing plate handle 31 when manually moving. Of course, in other embodiments, the platen base 30 and platen handle 31 may have other shapes.

Referring to fig. 4 and 5, as an alternative embodiment of the present embodiment, a connection pin 22 is connected to the mounting column 311, one end of the connection pin 22 is connected to the mounting column 311, and one end of the connection pin 22 is connected to the clutch shaft 20. And/or, the pressing plate on-off device also comprises a clutch elastic part 21, one end of the clutch elastic part 21 is connected with the clutch shaft 20, and the other end of the clutch elastic part 21 is connected with the pressing plate base 30.

Specifically, the clutch elastic member 21 may be a spring, and the connection pin 22 is located at a central position of the clutch elastic member 21. When the pressing plate handle 31 and the clutch shaft 20 move away from the transmission shaft 10, the clutch shaft 20 compresses the clutch elastic member 21, and after the pressing plate handle 31 removes the external force, the pressing plate elastic member and the clutch shaft 20 are reset toward the direction close to the transmission shaft 10 under the action of the compressed clutch elastic member 21. So, under manual throw and move back the mode, take out from clamp plate handle 31 and rotate the back when operating personnel, clamp plate handle 31 can automatic re-setting to make things convenient for manual throw to move back the operation.

With reference to fig. 5, as an optional implementation manner of this embodiment, the pressing plate moving-in and moving-out device further includes a detection component, and the detection component can detect a moving-in and moving-out state of the pressing plate moving-in and moving-out device, that is, detect whether the pressing plate handle 31 is located at the moving-in position or the moving-out position, so that the worker can monitor the moving-in and moving-out state of the pressing plate handle 31.

Further, as shown in fig. 2 and 3, as one of alternative embodiments of the present embodiment, the detecting part includes a light emitting part 23 and a light receiving part 24 separately provided at both sides of the clutch shaft 20, and the clutch shaft 20 is provided with a detecting hole 204. In a specific application, when the pressing plate handle 31 is rotated to the throwing-in or withdrawing position, the detection hole 204 radially penetrates through the clutch shaft 20, and can rotate along with the clutch shaft 20 and face the light emitting element 23, at this time, light of the light emitting element 23 can pass through the detection hole 204 and be received by the light receiving element 24, and therefore state detection of the throwing-in or withdrawing position of the pressing plate handle 31 is achieved. Of course, in other embodiments, the detecting component may also adopt other detecting switches, such as a contact switch or a hall switch, and the corresponding clutch shaft 20 may be provided with a toggle portion or a magnetic element.

Further, as one of alternative embodiments of the detecting part in the present embodiment, the light emitting element 23 and the light receiving element 24 are each provided in two in the axial direction of the clutch shaft 20, and the detecting holes 204 are provided in two alternately in the axial direction of the clutch shaft 20. Specifically, the detecting hole 204 includes a first detecting hole 2041 and a second detecting hole 2042, and the first detecting hole 2041 and the second detecting hole 2042 may correspond to the input position and the withdrawal position of the platen handle 31, respectively, and likewise, the light emitting element 23 includes a first light emitting element 231 and a second light emitting element 232, the light receiving element 24 includes a first light receiving element 241 and a second light receiving element 242, and the first light emitting element 231 and the first light receiving element 241, and the second light emitting element 232 and the second light receiving element 242 correspond to the input position and the withdrawal position, respectively. When the pressing plate handle 31 is switched to the throw-in position, the first detecting hole 2041 faces the first light emitting element 231, and the second detecting hole 2042 avoids the second light emitting element 232, at this time, the first light receiving element 241 receives the light of the first light emitting element 231 and is in the on state, and the second light receiving element 242 cannot receive the light of the second light emitting element 232 and is in the off state; when the pressing plate handle 31 is switched to the withdrawing position, the second detecting hole 2042 faces the second light emitting element 232, and the first detecting hole 2041 avoids the first light emitting element 231, so that the second light receiving element 242 receives the light of the second light emitting element 232 and is in the on state, and the first light receiving element 241 cannot receive the light of the first light emitting element 231 and is in the off state. This makes it possible, on the one hand, to improve the accuracy of the detection of the state by the different light emitting and receiving elements 23, 24 corresponding to the different positions of the pressure plate handle 31 and, on the other hand, in the automatic throw-back mode, the detection means may cooperate with the drive motor 11, for example, during the turning switching of the platen handle 31 from the thrown position to the withdrawn position, first the first light emitting element 231 and the first light receiving element 241 are in the on state, and the second light emitting element 232 and the second light receiving element 242 are in an off state, the driving motor 11 drives the platen handle 31 to rotate, at which time the first light receiving element 241 and the first light emitting element 231 in the on state become an off state, after the pressing plate handle 31 is rotated to the withdrawing position, the second light emitting element 232 and the second light receiving element 242 are switched on, and the driving motor 11 stops rotating after receiving the signal, so that the withdrawing action is completed, and thus, the accurate control of automatic withdrawing can be realized.

Referring to fig. 1 again, in this embodiment, the platen retraction device may further include a housing 12 and a control module (not shown in the figure), the control module, the driving motor 11, the transmission shaft 10 and the clutch shaft 20 are all located in the housing 12, two sides of the platen base 30 may be provided with an electrode column 307 and a nut 308, the electrode column 307 is provided with two electrodes and is electrically connected to two electrode contacts 305, the nut 308 may be connected to the electrode column 307 by a screw, and the electrode column 307 may face the housing 12. In a specific application, when the pressing plate retracting device of the present embodiment is installed on the installation plate, the pressing plate base 30 may be placed on the front surface of the installation plate, the electrode column 307 of the pressing plate base 30 passes through the installation plate and the housing 12 and is connected to a connection wire of a certain control loop, and then the nut 308 is connected to the end of the electrode column 307, so that the connection wire of the loop is fixedly connected to the electrode column 307, and the housing 12 and the pressing plate base 30 are installed on the installation plate. In addition, driving motor 11 and detection part can be connected in control module, realize that the clamp plate throws the remote control of moving back the device to control module can also set up communication module, can upload driving motor 11 and detection part's state to the backstage, in order to realize real time monitoring clamp plate and throw the state of moving back the device.

According to the clutch assembly and the pressing plate switching device with the clutch assembly, manual and automatic switching operation of the pressing plate switching device is achieved through the clutch shaft 20 and the transmission shaft 10 in the clutch assembly, automatic switching can be achieved through the remote control driving motor 11 in a conventional state, and the state of the clutch shaft 20 is collected through the detection part, so that real-time monitoring of the pressing plate switching device is achieved; when the automatic switching-in and switching-off can not be operated, the clutch shaft 20 can be pulled away from the transmission shaft 10 through the pressure plate handle 31 and rotated to switch the switching-in and switching-off positions, so that the pressure plate switching-in and switching-off device is always in a controllable state, the problem of out-of-control caused by the fact that the automatic switching-in and switching-off device can not be switched on and off due to faults in the prior art is solved, and the safety of an electric power secondary operation loop is guaranteed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (15)

1. A clutch assembly is characterized by comprising a clutch shaft and a transmission shaft, wherein the clutch shaft and the transmission shaft can be far away from or close to each other, the transmission shaft is used for being connected with an electric driving part and driven by the electric driving part, the clutch shaft is used for being connected with a driving handle and synchronously rotating and moving with the driving handle, a transmission structure which enables the clutch shaft to rotate along with the transmission shaft when the clutch shaft is connected with the transmission shaft is arranged between the transmission shaft and the clutch shaft, and the clutch shaft is normally connected with the transmission shaft through the transmission structure.

2. The clutch assembly of claim 1, wherein the transmission structure includes a transmission slot and a transmission portion extending into the transmission slot, the transmission slot is a non-circular slot, and the transmission portion is a non-cylindrical shape that mates with the transmission slot.

3. The clutch assembly of claim 2, wherein the transmission slot is a regular polygon slot and the transmission portion has a regular polygon cross-section.

4. A clutch assembly according to claim 2, wherein the side of the drive portion is a tapered first ramp and the side wall of the drive slot is a second ramp which cooperates with the first ramp.

5. The clutch assembly as claimed in claim 2, wherein a positioning hole is formed at the bottom of the transmission groove, and a positioning post for extending into the positioning hole is connected to the end surface of the transmission portion.

6. The clutch assembly of claim 2, wherein the transmission slot is disposed on the transmission shaft, and the transmission portion is disposed on the clutch shaft; or the transmission groove is arranged on the clutch shaft, and the transmission part is arranged on the transmission shaft.

7. A clutch assembly according to any one of claims 1 to 6, wherein the clutch shaft moves axially with the drive handle away from or towards the drive shaft.

8. A pressing plate switching device, which comprises a pressing plate base, a pressing plate handle and a driving motor, wherein the pressing plate handle is rotatably connected to the pressing plate base and can be switched between a switching position and a switching position, the pressing plate switching device is characterized by further comprising a clutch assembly as claimed in any one of claims 1 to 7, the clutch shaft is connected to the pressing plate handle and rotates and moves along with the pressing plate handle, and the transmission shaft is connected to the driving motor and is driven by the driving motor.

9. The platen retraction device according to claim 8, wherein said platen base is provided with a mounting hole, said platen handle is provided with a mounting post extending into said mounting hole, said mounting post being connected to said clutch shaft; and a limiting structure used for limiting the rotation angle of the pressure plate handle or/and a positioning structure used for positioning when the pressure plate handle rotates are/is arranged between the mounting hole and the mounting column.

10. The pressing plate feeding and discharging device as claimed in claim 9, wherein the limiting structure comprises a limiting groove and a limiting convex strip, the limiting groove is disposed on the sidewall of the mounting hole, the limiting convex strip is disposed on the periphery of the mounting post, and the limiting convex strip extends into the limiting groove and can rotate in the limiting groove; and/or the positioning structure comprises an input positioning groove, an exit positioning groove and a positioning component, the input positioning groove and the exit positioning groove are arranged at the periphery of the mounting column at intervals, the positioning component is arranged on the side wall of the mounting hole, and the end part of the positioning component can extend into the input positioning groove or the exit positioning groove when the pressing plate handle is switched to the position.

11. The pressing plate feeding and discharging device as claimed in claim 10, wherein there are two sets of the limiting structures, two of the limiting grooves are symmetrically disposed on the side wall of the mounting hole, and two of the limiting convex strips are symmetrically disposed on the periphery of the mounting post; and/or the positioning structure is provided with two groups, the two groups of the input positioning grooves and the two groups of the exit positioning grooves are symmetrically arranged on the periphery of the mounting column, and the two positioning parts are symmetrically arranged on the side wall of the mounting hole.

12. The platen retracting device of claim 9, wherein a connecting pin is connected to the mounting post, one end of the connecting pin is connected to the mounting post, and one end of the connecting pin is connected to the clutch shaft; and/or, the pressing plate switching device further comprises a clutch elastic part, one end of the clutch elastic part is connected to the clutch shaft, and the other end of the clutch elastic part is connected to the pressing plate base.

13. The pressing plate retracting device as claimed in any one of claims 8 to 12, wherein the pressing plate handle or/and the pressing plate base is/are provided with a protrusion for facilitating the rotation of the pressing plate handle relative to the pressing plate base.

14. The platen retracting device according to any one of claims 8 to 12, further comprising a detection means for detecting a retracting state of the platen handle.

15. The pressing plate retracting device according to claim 14, wherein the detecting member includes a light emitting element and a light receiving element respectively disposed at two sides of the clutch shaft, the clutch shaft is provided with a detecting hole, light of the light emitting element passes through the detecting hole and is received by the light receiving element when the light emitting element rotates to face the light emitting element, the light emitting element and the light receiving element are both disposed in two along an axial direction of the clutch shaft, and the detecting hole is disposed in two alternately along the axial direction of the clutch shaft.

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