CN219930892U - Thrust device for hinged shaft - Google Patents

Abstract

The utility model relates to the technical field of gates, in particular to a supporting hinge shaft thrust device, which comprises a first thrust shaft plate, a second thrust shaft plate and a pin shaft, wherein the first thrust shaft plate is sleeved on a supporting hinge shaft, a notch is formed in the supporting hinge shaft, the first thrust shaft plate comprises a limiting part, the limiting part can be clamped into the notch, the second thrust shaft plate comprises a through hole formed in a first direction, an annular groove which is formed in the inner circumferential surface of the second thrust shaft plate in a radial direction and is recessed in a direction far away from the axis of the second thrust shaft plate, the first thrust shaft plate is coaxially matched in the annular groove and is in clearance fit with the second thrust shaft plate, a first hole is formed in the first thrust shaft plate, a part of the second thrust shaft plate used for forming the annular groove comprises a first side wall and a second side wall which are opposite in the axial direction of the annular groove, and the pin shaft is arranged in the first side wall coaxially with the first hole.

Description

Thrust device for hinged shaft

Technical Field

The utility model relates to the technical field of gates, in particular to a thrust device for a supporting hinge shaft.

Background

After the hydraulic gate runs for a long time, the phenomenon of shaft locking is easy to occur due to the fact that the running condition is deteriorated, and the friction force between the supporting hinge shaft and the shaft sleeve is too large, or the supporting hinge shaft and the shaft sleeve are mutually bitten due to slight deformation, so that the supporting hinge shaft rotates along with the gate support arm in the movement process of the gate, the bolt of the shaft locking plate is stressed to be sheared, the horizontal withdrawal of the supporting hinge shaft in the movement process of the gate is easy to be caused, the falling off of the gate support arm is caused, and the safe operation of the gate is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides a supporting hinge shaft thrust device which can improve the safety of a gate.

The thrust device for the support hinge shaft comprises: the first shaft stopping plate is suitable for being sleeved on the hinged shaft, a notch is formed in the hinged shaft, the first shaft stopping plate comprises a limiting part, and the limiting part can be clamped into the notch; the second shaft stopping plate comprises a through hole which is formed in the first direction, an annular groove which is formed in the inner circumferential surface of the second shaft stopping plate in a radial direction of the second shaft stopping plate and is recessed in a direction away from the axis of the second shaft stopping plate, the first shaft stopping plate is coaxially matched in the annular groove and is in clearance fit with the second shaft stopping plate, a first hole is formed in the end face of the first shaft stopping plate, a part of the second shaft stopping plate, which is used for forming the annular groove, comprises a first side wall and a second side wall which are opposite in the axial direction of the annular groove, and a second hole which is coaxial with the first hole is formed in the first side wall; the pin shaft penetrates through the first hole and the second hole.

The thrust device for the hinged shaft can improve the safety of a gate.

In some embodiments, the first axial stop plate comprises at least two first axial stop segments, and the two first axial stop segments are connected end to form an annular first axial stop plate.

In some embodiments, the second axial stop plate comprises at least two second axial stop segments, and the two second axial stop segments are connected end to form an annular second axial stop plate.

In some embodiments, the two first axial stop segments are detachably connected to each other and the two second axial stop segments are detachably connected to each other.

In some embodiments, the thrust device for a support hinge further comprises a connecting piece, a third hole is formed in the end face of the second thrust split, the third hole extends along the first direction and penetrates through the second thrust split, and the connecting piece is suitable for being connected with the fixed support through the third hole.

In some embodiments, the number of the third holes is set to be plural, and the plural third holes are arranged at intervals in the second axial stop.

In some embodiments, the pin extends along the first direction, the pin includes a first connection section, a second connection section, and a third connection section that are connected in sequence, the first connection section being located in the first hole, the third connection section being located in the second hole, the second connection section being located between the first and second axle stop plates at a center of the first direction.

In some embodiments, the first connection section and the third connection section have the same dimension in the radial direction of the pin shaft, and the second connection section has a dimension in the radial direction of the pin shaft that gradually decreases in the first direction along a direction closer to the center.

In some embodiments, a distance between an end of the first connection section remote from the second connection section and a center of the second connection section in the first direction is the same as a dimension of the notch in the first direction.

In some embodiments, the thrust device further comprises a signal generator, the pin shaft is provided with a fourth hole along the first direction, the signal generator is installed in the fourth hole, and the signal generator is used for sending out a signal when the pin shaft is disconnected.

Drawings

Fig. 1 is a schematic view of a thrust device for a fulcrum shaft according to an embodiment of the present utility model.

Fig. 2 is a perspective view of a first axial stop plate according to an embodiment of the present utility model.

Fig. 3 is a front view of a first axial stop plate according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view of A-A in fig. 3.

Fig. 5 is a perspective view of a second axial stop plate according to an embodiment of the present utility model.

Fig. 6 is a front view of a second axial stop plate according to an embodiment of the present utility model.

Fig. 7 is a cross-sectional view of B-B of fig. 6.

Fig. 8 is a perspective view of a pin according to an embodiment of the present utility model.

Fig. 9 is an elevation view of a pin in accordance with an embodiment of the present utility model.

Fig. 10 is a cross-sectional view of C-C of fig. 9.

Reference numerals:

the pivot shaft 100, the slot 110,

the first shaft-stopping plate 1, a limiting part 11, a first hole 12, a first shaft-stopping split 13, a through hole 14, a first groove 15,

the second shaft stop plate 2, the through hole 21, the ring groove 22, the first side wall 23, the second hole 231, the second side wall 24, the second shaft stop split 25, the third hole 251, the second groove 26,

the pin 3, the first connecting section 31, the second connecting section 32, the third connecting section 33, the fourth hole 34,

a signal generator 4.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The thrust device of the support hinge shaft 100 comprises a first shaft stopping plate 1, a second shaft stopping plate 2 and a pin shaft 3. The first shaft stopping plate 1 is suitable for being sleeved on the supporting hinge shaft 100, the supporting hinge shaft 100 is provided with a notch 110, the first shaft stopping plate 1 comprises a limiting part 11, and the limiting part 11 can be clamped into the notch 110. The second shaft-stopping plate 2 includes a through hole 21 opened in a first direction (left-right direction as shown in fig. 1), an annular groove 22 recessed in a direction away from an axial center of the second shaft-stopping plate 2 along a radial direction of the second shaft-stopping plate 2 is provided on an inner peripheral surface of the second shaft-stopping plate 2, the first shaft-stopping plate 1 is coaxially fitted in the annular groove 22 and forms clearance fit with the second shaft-stopping plate 2, a first hole 12 is provided on an end surface of the first shaft-stopping plate 1, a portion of the second shaft-stopping plate 2 for constituting the annular groove 22 includes a first side wall 23 and a second side wall 24 opposite in an axial direction of the annular groove 22, and a second hole 231 coaxial with the first hole 12 is provided on the first side wall 23. The pin 3 is inserted through the first hole 12 and the second hole 231.

It should be noted that, the hinge shaft 100 extends along the left-right direction, the hinge shaft 100 is cylindrical, the peripheral wall surface of the hinge shaft 100 is provided with the notch 110, four notches 110 are provided on the hinge shaft 100, two notches 110 are symmetrically arranged in the up-down direction, and the other two notches 110 are symmetrically arranged in the left-right direction.

Specifically, as shown in fig. 1 to 4, the outer contour of the first shaft-stopping plate 1 is circular, and the first shaft-stopping plate 1 is provided with a through hole 14 along the left-right direction so as to sleeve the first shaft-stopping plate 1 on the support hinge shaft 100, the limiting portion 11 includes a first limiting portion 11 and a second limiting portion 11 which are matched with two notches 110 which are vertically symmetrical, and the first limiting portion 11 and the second limiting portion 11 can be clamped into the corresponding notches 110. The end surface of the first axial stop plate 1 is provided with a first hole 12 penetrating in the left-right direction.

As shown in fig. 5 to 7, the outer contour of the second shaft-stopping plate 2 is circular, the second shaft-stopping plate 2 is provided with a through hole 21 along the left-right direction, the inner wall surface of the second shaft-stopping plate 2 comprises a first side wall 23 and a second side wall 24, the first side wall 23 and the second side wall 24 are sequentially arranged along the left-right direction, an annular groove 22 is formed along the radial direction of the second shaft-stopping plate 2 on the basis of providing the through hole 21 on the second shaft-stopping plate 2, the first shaft-stopping plate 1 is installed in the annular groove 22, the first shaft-stopping plate 1 is sleeved on the supporting hinge shaft 100, the second shaft-stopping plate 2 is connected with a fixed support (not shown in the figure) so that clearance fit is formed between the first shaft-stopping plate 1 and the second shaft-stopping plate 2, the left end of the first shaft-stopping plate 1 is close to the first side wall 23, a second hole 231 coaxial with the first hole 12 is formed on the first side wall 23, and the pin shaft 3 is inserted into the first hole 12 and the second hole 231 so as to connect the first shaft-stopping plate 1 and the second shaft-stopping plate 2.

Alternatively, the cross-sectional area enclosed by the second side wall 24 is larger than the cross-sectional area enclosed by the first side wall 23, the diameters of the through hole 21 and the through hole 14 are matched with the diameter of the hinge shaft 100, the diameter of the ring groove 22 is matched with the diameter of the first shaft stop plate 1, and the dimension of the ring groove 22 in the left-right direction is matched with the dimension of the first shaft stop plate 1 in the left-right direction.

It should be noted that, when the force generated by jamming or jamming does not occur between the hinge shaft 100 and the hinge bearing, so that the hinge bearing is damaged by friction and extrusion, under the action of the pin shaft 3, the first shaft stopping plate 1 and the second shaft stopping plate 2 are fixedly connected, and the hinge shaft 100 does not rotate along with the hinge bearing due to the limitation of the first shaft stopping plate 1 and the second shaft stopping plate 2, so that the gate is normally opened and closed. When the mutually-clamped force of the journal bearing and the journal 100 is enough to cause damage to the journal bearing due to friction and extrusion, the connection between the bearing plate stress and the fixed support in the related art is broken, the journal 100 is easily withdrawn horizontally to cause the falling of the support arm to affect the safe operation of the gate in the operation process of the gate, and the journal bearing is forced to rotate around the shaft under the action of hydraulic power, so that the journal bearing is damaged due to friction and extrusion, and the damage of the journal is accelerated, while the pin shaft 3 of the embodiment of the utility model is sheared under the action of shearing force generated by the first bearing plate 1 and the second bearing plate 2, at this time, the first bearing plate 1 can synchronously rotate along with the journal shaft 100, and if the gate continues to act, the journal bearing, the journal shaft 100 and the journal bearing rotate together to prevent the journal bearing from rotating relative to the journal shaft 100 to generate friction and extrusion damage.

In the embodiment of the utility model, the first shaft stopping plate 1 and the second shaft stopping plate 2 are in clearance fit, the second shaft stopping plate 2 and the supporting hinge shaft 100 are in clearance fit, namely, the second shaft stopping plate 2 and the supporting hinge shaft 100 are not in contact with each other, so that the supporting hinge shaft 100 can drive the first shaft stopping plate 1 to rotate under the condition that the supporting hinge shaft 100 and the supporting hinge bearing are completely locked, and the second shaft stopping plate 2 can keep relative static when the first shaft stopping plate 1 rotates along with the supporting hinge shaft 100 due to the clearance fit of the first shaft stopping plate 1 and the second shaft stopping plate 2, and the horizontal withdrawal of the supporting hinge shaft 100 is avoided through the connection between the second shaft stopping plate 2 and the fixed support, thereby avoiding the falling off of a gate arm and improving the safety of the gate.

In some embodiments, the first axial stop plate 1 comprises at least two first axial stop segments 13, and the two first axial stop segments 13 are connected end to enclose an annular first axial stop plate 1.

Specifically, as shown in fig. 2-4, two first shaft-stopping split pieces 13 are connected end to form a ring shape, and because the hinge shaft 100 is in a ring shape, the first shaft-stopping plate 1 at least comprises two first shaft-stopping split pieces 13, so that the first shaft-stopping plate 1 is conveniently sleeved on the hinge shaft 100, the first shaft-stopping split pieces 13 are connected end to end so that the first shaft-stopping plate 1 is sleeved on the hinge shaft 100, and the limiting part 11 of the first shaft-stopping plate 1 is clamped into the notch 110 of the hinge shaft 100.

Alternatively, since the first shaft-stopping plate 1 is sleeved on the hinge shaft 100 and is installed in the ring groove 22 of the second shaft-stopping plate 2, the surface of the first shaft-stopping plate 1 is smooth and burr-free.

For example, the number of the first axial stop segments 13 may be two, three or four, as long as the plurality of first axial stop segments 13 are connected end to form the annular first axial stop plate 1, and the number and positions of the limiting portions 11 correspond to the number and positions of the notches 110 on the hinge shaft 100.

In some embodiments, the second axle stop plate 2 comprises at least two second axle stop segments 25, and the two second axle stop segments 25 are connected end to enclose an annular second axle stop plate 2.

Specifically, as shown in fig. 5-7, the two second shaft-stopping split pieces 25 are connected end to form a ring shape, and because the outer contour of the first shaft-stopping plate 1 is ring-shaped and is installed in the ring groove 22, the second shaft-stopping plate 2 is sleeved outside the first shaft-stopping plate 1, and the second shaft-stopping plate 2 is provided with a plurality of second shaft-stopping split pieces 25, so that the installation of the second shaft-stopping plate 2 is facilitated.

For example, the number of the second axial stop segments 25 may be two, three, or four, so long as the plurality of second axial stop segments 25 are connected end to form the annular second axial stop plate 2, the positions of the second holes 231 coaxially correspond to the positions of the first holes 12, and the number of the first holes 12 and the second holes 231 is one.

In some embodiments, the two first axial split 13 and the two second axial split 25 are both detachably connected.

Specifically, the two first axial stop segments 13 are connected by bolting or welding. When the two first axial locking split pieces 13 are connected by bolts, the first grooves 15 facing the axial center direction of the first axial locking plate 1 are arranged on the outer peripheral surface of the connecting position of the two adjacent first axial locking split pieces 13, and threaded holes are formed in the first grooves 15 and face the groove walls of the adjacent first axial locking split pieces 13, so that the two adjacent first axial locking split pieces 13 are connected conveniently.

The two second axial split pieces 25 are connected by adopting a bolt connection or welding mode. When the two second axial-stopping split 25 adopts the bolt connection mode, the second groove 26 facing the axial center direction of the second axial-stopping plate 2 is arranged on the outer peripheral surface of the joint of the two adjacent second axial-stopping split 25, and the groove wall facing the adjacent second axial-stopping split 25 in the second groove 26 is provided with a threaded hole, so that the two adjacent second axial-stopping split 25 can be connected conveniently.

When the plurality of first shaft-stopping split pieces 13 and the plurality of second shaft-stopping split pieces 25 are detachably connected by bolts, the first shaft-stopping plate 1 and the second shaft-stopping plate 2 can be replaced conveniently. When the fixed connection mode of welding connection is adopted between the plurality of first shaft-stopping split pieces 13 and the plurality of second shaft-stopping split pieces 25, the structural stability of the first shaft-stopping plate 1 and the second shaft-stopping plate 2 is ensured.

In some embodiments, the thrust device for the hinge shaft 100 further includes a connecting piece (not shown in the drawings), wherein the end surface of the second hinge shaft split 25 is provided with a third hole 251, the third hole 251 extends along the first direction and penetrates the second hinge shaft split 25, and the connecting piece is adapted to be connected to the fixed support through the third hole 251.

Specifically, a third hole 251 penetrating in the left-right direction is formed in the end face of the second axial stop segment 25, a connecting piece passes through the third hole 251 and is connected with the fixed support to fix the second axial stop plate 2 on the fixed support, the second axial stop plate 2 is connected with the first axial stop plate 1 through a pin shaft 3, when the first axial stop plate 1 rotates under the action of the support hinge 100, the first axial stop plate 1 rotates along with the support hinge 100, the pin shaft 3 between the first axial stop plate 1 and the second axial stop plate 2 is sheared, a connecting piece between the second axial stop plate 2 and the fixed support is not sheared under stress, the horizontal withdrawal of the support hinge 100 is avoided through the thrust action of the second axial stop plate 2 on the support hinge 100, and the safety of a gate is improved.

In some embodiments, the number of third holes 251 is set to be plural, and the plurality of third holes 251 are arranged at intervals at the second axial stop lobe 25.

Specifically, the number of the third holes 251 corresponds to the number of the connecting members, and the connection stability between the second shaft stop plate 2 and the fixed mount is improved by the arrangement of the plurality of third holes 251 and the plurality of connecting members.

For example, the number of the third holes 251 in the second shaft-stopping plate 2 is eight, and when the second shaft-stopping plate 2 includes two second shaft-stopping split pieces 25, four third holes 251 are provided in each second shaft-stopping split piece 25.

In some embodiments, the pin 3 extends along a first direction, the pin 3 includes a first connection section 31, a second connection section 32, and a third connection section 33 connected in sequence, the first connection section 31 being located in the first hole 12, the third connection section 33 being located in the second hole 231, the second connection section 32 being located between the first and second axle stop plates 1 and 2 at a center of the first direction.

Specifically, as shown in fig. 8 to 10, the pin 3 extends in the left-right direction, and is a first connection section 31, a second connection section 32, and a third connection section 33 in this order from right to left, the second connection section 32 being located between the first connection section 31 and the third connection section 33, and the connection of the first shaft stop plate 1 and the second shaft stop plate 2 is achieved by passing the pin 3 through the first hole 12 and the second hole 231.

The first connecting section 31 is located in the first shaft stopping plate 1, the third connecting section 33 is located in the second shaft stopping plate 2, the second connecting section 32 is located between the first shaft stopping plate 1 and the second shaft stopping plate 2 at the center of the left-right direction, so that when the first shaft stopping plate 1 rotates under the action of the supporting hinge shaft 100, the second connecting piece is located at a stress shearing point at the center of the left-right direction, and the pin shaft 3 is sheared conveniently.

After the pin shaft 3 is sheared, the connection between the first shaft stopping plate 1 and the second shaft stopping plate 2 is disconnected, so that a connecting piece between the second shaft stopping plate 2 and the fixed support cannot bear shearing stress to be sheared, the stress of the connecting piece is improved, the influence of rotation of the first shaft stopping plate 1 and the supporting hinge shaft 100 can be avoided, the first shaft stopping plate 1 cannot horizontally displace under the limitation of the second shaft stopping plate 2, the condition that the supporting hinge shaft 100 horizontally withdraws from the shaft is avoided, and the operation safety of a gate is improved.

In some embodiments, the first connection section 31 and the third connection section 33 have the same size in the radial direction of the pin 3, and the second connection section 32 gradually decreases in the radial direction of the pin 3 toward the center along the first direction.

Specifically, the first connection section 31 and the third connection section 33 are cylindrical, and the diameters of the first connection section 31 and the third connection section 33 are the same, the diameter of the second connection section 32 gradually decreases from left to center and from right to center, and the diameter of the second connection section 32 at the center is the smallest.

It will be appreciated that the diameter at the centre of the second connecting section 32 is determined by the amount of force required to shear the pin 3.

In some embodiments, the distance between the end of the first connection section 31 remote from the second connection section 32 and the center of the second connection section 32 in the first direction is the same as the size of the notch 110 in the first direction.

Specifically, the distance from the right end of the first connecting section 31 to the center of the second connecting section 32 is the same as the dimension of the notch 110 in the left-right direction, so that the right end of the pin shaft 3 is prevented from penetrating out of the first shaft stop plate 1.

In some embodiments, the thrust device of the hinge shaft 100 further includes a signal generator 4, the pin shaft 3 is provided with a fourth hole 34 along the first direction, the signal generator 4 is installed in the fourth hole 34, and the signal generator 4 is used for sending a signal when the pin shaft 3 is disconnected.

Compared with the prior art that the gate runs under unsafe working conditions, the situation that the support hinge bearing and the support hinge shaft 100 are blocked cannot be accurately judged, the gate stopping action cannot be immediately performed according to abnormal conditions, the gate is still normally opened and closed, and the risk of running the hydraulic gate is increased.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

It will be appreciated that the above embodiments are exemplary and are not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A thrust device for a prop shaft, comprising:

the first shaft stopping plate is suitable for being sleeved on the hinged shaft, a notch is formed in the hinged shaft, the first shaft stopping plate comprises a limiting part, and the limiting part can be clamped into the notch;

the second shaft stopping plate comprises a through hole which is formed in the first direction, an annular groove which is formed in the inner circumferential surface of the second shaft stopping plate in a radial direction of the second shaft stopping plate and is recessed in a direction away from the axis of the second shaft stopping plate, the first shaft stopping plate is coaxially matched in the annular groove and is in clearance fit with the second shaft stopping plate, a first hole is formed in the end face of the first shaft stopping plate, a part of the second shaft stopping plate, which is used for forming the annular groove, comprises a first side wall and a second side wall which are opposite in the axial direction of the annular groove, and a second hole which is coaxial with the first hole is formed in the first side wall;

the pin shaft penetrates through the first hole and the second hole.

2. The pivot axle thrust device of claim 1, wherein the first stop plate includes at least two first stop axle segments, the two first stop axle segments being connected end-to-end to define an annular first stop plate.

3. The pivot axle thrust device of claim 2, wherein the second stop plate includes at least two second stop axle segments, the two second stop axle segments being joined end-to-end to define an annular second stop plate.

4. A hinge shaft thrust device as claimed in claim 3, wherein the first and second shaft segments are detachably connected to each other.

5. A hinge shaft thrust device as in claim 3, further comprising a connector, wherein a third hole is formed in an end face of the second hinge shaft split, the third hole extends along the first direction and penetrates the second hinge shaft split, and the connector is adapted to be connected to a fixed support through the third hole.

6. The thrust device of claim 5, wherein the number of the third holes is plural, and the plural third holes are arranged at intervals in the second thrust lobe.

7. The corbel thrust device according to claim 1, wherein the pin extends in the first direction, the pin including a first connection section, a second connection section, and a third connection section connected in sequence, the first connection section being located in the first bore, the third connection section being located in the second bore, the second connection section being located between the first and second thrust plates at a center of the first direction.

8. The corbel thrust device according to claim 7, wherein the first connecting section and the third connecting section are the same in size in the radial direction of the pin shaft, and the second connecting section is tapered in size in the radial direction of the pin shaft in the first direction toward the center.

9. The corbel thrust device according to claim 8, wherein a distance between an end of the first connecting section remote from the second connecting section and a center of the second connecting section in the first direction is the same as a dimension of the notch in the first direction.

10. The thrust device of a fulcrum shaft of claim 8, further comprising a signal generator, wherein the pintle has a fourth aperture formed therein along the first direction, the signal generator being mounted in the fourth aperture, the signal generator for emitting a signal when the pintle is disconnected.