CN208812005U - Outdoor disconnector cylindrical pin extracting tool - Google Patents

Abstract

The utility model provides a kind of outdoor disconnector cylindrical pin extracting tool, is related to the technical field of dismounting hinge pin equipment, and outdoor disconnector cylindrical pin extracting tool provided by the utility model includes: main part, wheel dish axle, actuating arm and locking assembly；It is equipped in main part and is through to external guide channel, wheel dish axle is snug fit in guide channel；The one end and main part of actuating arm are rotatablely connected, and the shaft of actuating arm, perpendicular to wheel dish axle, the end of actuating arm and wheel dish axle transmission cooperate, so that wheel dish axle is moved back and forth along guide channel；Locking assembly is used to main part being locked at link mechanism junction.It solves and is easy when dismantling pin shaft in the prior art because of vibration damage peripheral parts and the low technical problem of removal efficiency.

Description

Outdoor disconnector cylindrical pin extracting tool

Technical field

The utility model relates to dismounting hinge pin equipment technical fields, more particularly, to a kind of outdoor disconnector cylindrical pin Extracting tool.

Background technique

Many substations are in coastal area, and the pivot pin oxidation corrosion of outdoor disconnector kinematic link junction is very tight Weight, causes disconnecting switch three-phase Contact Breaking/Making Operations not in place, and contact is bad, and longtime running causes contact to generate heat, and burns out contact, In addition the corrosion of pin shaft and connecting rod to together when, will lead to disconnecting switch and refuse point or refuse to close, influence kinematic link normal use, equipment It can not carry out stopping power transmission operation, seriously threaten electric power netting safe running.

When needing to disassemble link mechanism, hammer link mechanism junction is generallyd use, the vibration of hammer bring is easy Damage connecting rod and the component being connect with connecting rod (flange of the support porcelain vase of such as disconnecting switch connects), and removal efficiency is low, needs Could repeatedly pin shaft be unloaded by beating.

The information disclosed in the background technology section is intended only to deepen the reason to the general background technology of the utility model Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form Technology.

Utility model content

The purpose of this utility model is to provide a kind of outdoor disconnector cylindrical pin extracting tools, to alleviate existing skill It is easy when dismantling link mechanism pin shaft in art because of vibration damage peripheral parts and the low technical problem of removal efficiency.

In a first aspect, outdoor disconnector cylindrical pin extracting tool provided by the utility model includes: main part, wheel disc Axis, actuating arm and locking assembly；

It is equipped in the main part and is through to external guide channel, the wheel dish axle is snug fit at the guide channel In；

The one end of the actuating arm and the main part are rotatablely connected, and the shaft of the actuating arm is perpendicular to the wheel Dish axle, the end of the actuating arm and wheel dish axle transmission cooperate, so that the wheel dish axle is past along the guide channel Multiple movement；

The locking assembly is used to the main part being locked at link mechanism junction.

With reference to first aspect, the utility model provides the first possible embodiment of first aspect, in which:

The actuating arm includes driving arm body and drive disk, and one end of the driving arm body and the drive disk connect It connects；

The peripheral side of the drive disk passes through tooth and wheel dish axle engaged transmission.

With reference to first aspect, the utility model provides second of possible embodiment of first aspect, in which:

The quantity of the actuating arm is more than or equal to two, and two actuating arms are symmetrically disposed on the wheel dish axle two sides.

With reference to first aspect, the utility model provides the third possible embodiment of first aspect, in which:

The outlet edge of the guide channel is equipped with circular orientation set.

With reference to first aspect, the utility model provides the 4th kind of possible embodiment of first aspect, in which:

The locking assembly includes pedestal and multiple tie down screws, and the pedestal is opposite with the outlet of the guide channel to be set It sets；

The outdoor disconnector cylindrical pin extracting tool further includes interconnecting piece, the edge of the pedestal and the main body Portion is connected by the interconnecting piece；

The tie down screw cooperates through the pedestal and by screw thread and the pedestal, so that the tie down screw End is close or far from the main part.

The 4th kind of possible embodiment with reference to first aspect, the utility model provide first aspect the 5th kind can The embodiment of energy, in which:

The locking assembly further includes positioning plate, and the positioning plate is set to the pedestal towards the end of the main part Face；

The tie down screw is rotatablely connected by shaft and the positioning plate of own axes.

The 5th kind of possible embodiment with reference to first aspect, the utility model provide first aspect the 6th kind can The embodiment of energy, in which:

The positioning plate is equipped with multiple first and runs through through-hole, and the described first internal diameter for running through through-hole is greater than the tie down screw Outer diameter, the tie down screw is matched with described first in the through-hole；

The side wall of the tie down screw is equipped with boss, and the boss is set to side of the positioning plate far from the main part Face.

The 4th kind of possible embodiment with reference to first aspect, the utility model provide first aspect the 7th kind can The embodiment of energy, in which:

The pedestal is equipped with pin shaft collecting tank towards the side of the main part；

The opening of the pin shaft collecting tank and the outlet of the guide channel are oppositely arranged.

The 7th kind of possible embodiment with reference to first aspect, the utility model provide first aspect the 8th kind can The embodiment of energy, in which:

From pin shaft collecting tank inlet to the direction far from the main part, the pin shaft collecting tank internal diameter gradually subtracts It is small.

The 7th kind of possible embodiment with reference to first aspect, the utility model provide first aspect the 9th kind can The embodiment of energy, in which:

The pin shaft collecting tank runs through the pedestal, and the pin shaft collecting tank is set far from the exit edge of the main part There is extension part, and the pin shaft collecting tank is combined with capping far from the exit of the main part, the extension part is equipped with second Through through-hole；

The edge of the capping is equipped with pillar, and the pillar is for being matched with described second in through-hole；

The pillar is equipped with lateral groove far from the end sidewalls of the capping, is combined with limit in the lateral groove Part is equipped with elastic component between the locating part and the slot bottom of the lateral groove, so that locating part pop-up is described lateral recessed Slot blocks the extension part or retracts the lateral groove.

Compared with prior art, outdoor disconnector cylindrical pin extracting tool provided by the utility model has following excellent Gesture:

Outdoor disconnector cylindrical pin extracting tool provided by the utility model when in use, will be led using locking assembly Body portion is fixed on link mechanism junction, is aligned the outlet of guide channel with pin shaft to be removed, and make take turns dish axle with it is to be removed The tilt angle of pin shaft is consistent, operator's hand rotational drive arm, and the above-mentioned end of actuating arm is rotated around rotary shaft, and Band runner disc axis is slided along guide channel, until the end of wheel dish axle withstands on the end of pin shaft to be removed, continues to rotate actuating arm, Making to take turns dish axle for pin shaft to be removed ejection link mechanism, the disassembly of pin shaft can be completed, whole process is not necessarily to beat pin shaft, but Pin shaft is slowly ejected using wheel dish axle, the component near pin shaft is effectively prevented and is damaged because of vibration；In addition, operator only needs End of the rotational drive arm far from wheel dish axle can easily be moved band runner disc axis using lever principle along guide channel, and be grasped Work can once eject pin shaft, time saving and energy saving compared with taking hammer to beat the form of pin shaft repeatedly.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the main view of outdoor disconnector cylindrical pin extracting tool provided by the embodiment of the utility model；

Fig. 2 is outdoor disconnector cylindrical pin extracting tool provided by the embodiment of the utility model through partial cross Side view；

Fig. 3 is partial enlarged view at the A in Fig. 2；

Fig. 4 is the internal view of outdoor disconnector cylindrical pin extracting tool provided by the embodiment of the utility model；

Fig. 5 is partial enlarged view at the B in Fig. 4.

Icon: 110- main part；120- circular orientation set；210- driving arm body；220- drive disk；310- takes turns dish axle； 320- handle；410- interconnecting piece；510- pedestal；520- pin shaft collecting tank；530- positioning plate；541- capping；542- pillar；543- Elastic component；544- locating part；545- extension part；550- tie down screw；560- locking nut.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Please refer to Fig. 1, Fig. 2 and Fig. 4:

Outdoor disconnector cylindrical pin extracting tool provided by the embodiment of the utility model includes: main part 110, wheel disc Axis 310, actuating arm and locking assembly；

It is equipped in main part 110 and is through to external guide channel, wheel dish axle 310 is snug fit in guide channel；

The one end and main part 110 of actuating arm are rotatablely connected, and the shaft of actuating arm is perpendicular to wheel dish axle 310, driving The above-mentioned end of arm and the wheel transmission of dish axle 310 cooperate, so that wheel dish axle 310 is moved back and forth along guide channel；

Locking assembly is used to main part 110 being locked at link mechanism junction.

The end of actuating arm and the wheel transmission cooperation of dish axle 310 at least include the following three types form: the first form, actuating arm End be arranged to arcuate structure, the side wall of arcuate structure and wheel dish axle 310 passes through tooth engagement transmission；Second of form, driving The end of arm is arranged to arcuate structure, and arcuate structure and the side wall for taking turns dish axle 310 pass through frictional drive, for example, can be in arc Rubber friction particle is arranged in the surface of structure and the side of wheel dish axle 310, to increase arcuate structure and take turns rubbing between dish axle 310 Wipe coefficient；The third form, the above-mentioned end of actuating arm are equipped with the extension rod slided along actuating arm length direction, and extension rod is separate The end of actuating arm and wheel dish axle 310 are hinged, and articulated shaft is perpendicular to the length direction of wheel dish axle 310, in rotational drive arm In the process, extension rod band runner disc axis 310 is slided along guide channel, and when taking turns the stretching guide channel of dish axle 310, extension rod is outside It stretches out, when actuating arm is perpendicular to wheel dish axle 310, the length that extension rod stretches out is most short, when actuating arm continues to rotate, makes to take turns dish axle When the outlet of the separate guide channel of 310 continuation, extension rod extends again.

Expansion is discussed on the basis of the first form that the end of actuating arm and wheel dish axle 310 are driven below:

Actuating arm includes driving arm body 210 and drive disk 220, and one end of driving arm body 210 and drive disk 220 connect It connects；

The peripheral side of drive disk 220 passes through 310 engaged transmission of tooth and wheel dish axle.

Specifically, as shown in figure 4, along the length direction for taking turns dish axle 310, the sidewall spacers of wheel dish axle 310 are distributed with multiple Multiple and driven tooth engagement driving tooth is distributed in driven tooth, circumferentially-spaced along drive disk 220, by taking the actuating arm of right side as an example, It is rotated up the right end of driving arm body 210, drive disk 220 rotates counterclockwise, and driven tooth is stirred by driving tooth and is moved down, Wheel dish axle 310 is moved down with driven tooth, and pin shaft to be removed is ejected.

Further, the quantity of actuating arm is more than or equal to two, and two actuating arms are symmetrically disposed on wheel 310 two sides of dish axle；

As shown in figure 4, there are two outdoor disconnector cylindrical pin extracting tool tools provided by the embodiment of the utility model Actuating arm, two actuating arms be symmetrically disposed on wheel dish axle 310 the left and right sides, operator when carrying out dismounting hinge pin work, Using locking assembly by main part 110 and link mechanism junction it is fixed after, every hand of operator holds an actuating arm, two A hand dials up end of the actuating arm far from wheel dish axle 310 simultaneously, i.e., ejects pin shaft using wheel disc axis 310；Two hands It is exerted a force simultaneously using actuating arm, on the one hand, the weight bearing of operator's one hand, on the other hand, left side actuating arm and right side can be mitigated The component of actuating arm in the horizontal direction can cancel out each other, and advantageously ensure that the balance of main part 110.

Further, in order to adapt to the operators of different brachiums, actuating arm is retractable structure, in this embodiment, will Driving arm body 210 is arranged to telescoping tube；

Operator can according to itself brachium adjust actuating arm total length, in order to operator always can hand grab drive The free end of swing arm maximizes the laborsaving rotational drive arm of degree to utilize lever principle.

Further, as shown in figure 4, main part 110 is run through at guide channel both ends, dish axle 310 is taken turns far from guide channel End extend to outside guide channel, and take turns dish axle 310 far from guide channel end be equipped with handle 320, in order to operator Member's lifting outdoor disconnector cylindrical pin extracting tool, handle 320 can be annular or hook formation.

Further, as shown in figure 4, the outlet edge of guide channel is equipped with circular orientation set 120, circular orientation set 120 Be fixedly connected with main part 110, in order to by main part 110 by locking assembly and link mechanism junction it is fixed after, benefit Pin shaft is entangled with circular orientation set 120, so that wheel dish axle 310 be enable to be directed at pin shaft.

In addition, circular orientation set 120 is certainly close to the end of main part 110 in order to make pin shaft be easily accessible circular orientation set 120 The internal diameter of portion to the end far from main part 110, circular orientation set 120 gradually increases, to form flaring structure.

The concrete form of locking assembly is discussed in detail below:

As shown in figure 4, locking assembly includes pedestal 510 and multiple tie down screws 550, pedestal 510 goes out with guide channel Mouth is oppositely arranged；

Outdoor disconnector cylindrical pin extracting tool further includes interconnecting piece 410, the edge and main part 110 of pedestal 510 It is connected by interconnecting piece 410；

Tie down screw 550 cooperates through pedestal 510 and by screw thread and pedestal 510, so that the end of tie down screw 550 Close to or far from main part 110；

By placement main part 110, it is stuck in link mechanism junction between the lower end of main part 110 and pedestal 510, Tie down screw 550 is rotated, tie down screw 550 is moved up, so that tie down screw 550 clamps link mechanism junction, tears open During unloading pin shaft, it can prevent main part 110 from shaking, the accurate positioning convenient for wheel dish axle 310 to pin shaft.

As shown in figure 4, locking assembly further includes positioning plate 530, positioning plate 530 is set to pedestal 510 towards main part 110 End face；

Tie down screw 550 is rotatablely connected by shaft and positioning plate 530 of own axes；

Rotation tie down screw 550 moves it up, since tie down screw 550 and positioning plate 530 are rotatablely connected, positioning plate 530 will not hinder tie down screw 550 to rotate, and then, tie down screw 550 can jack up positioning plate 530 upwards, thus, it will even Linkage junction clamps；Relative to tie down screw 550, positioning plate 530 increases the contact area with link mechanism junction, Clamping link mechanism junction that can be more stable.

Tie down screw 550 is rotatablely connected by shaft and positioning plate 530 of own axes, includes at least following form:

The first form, as shown in figure 5, positioning plate 530, which is equipped with multiple first, runs through through-hole, first runs through the internal diameter of through-hole Greater than the outer diameter of tie down screw 550, tie down screw 550 is matched with first in through-hole；The side wall of tie down screw 550 is equipped with convex Platform, boss are set to side of the positioning plate 530 far from main part 110；Wherein, tie down screw 550 for ease of operation, locking screw The lower end of bar 550 is equipped with rotating handle；Positioning plate 530 falls off from tie down screw 550 in order to prevent, in the upper of positioning plate 530 Side's setting locking nut 560, positioning plate 530 is limited in centre jointly by locking nut 560 and boss；In the present embodiment, boss Set-up mode it is as shown in Figure 5: tie down screw 550 includes thick section and thin segment, and thick section, which passes through, to be threadedly engaged in the logical of positioning plate 530 Kong Zhong, thin segment are set to thick section close to the end of main part 110, and through first in through-hole, thick section and thin segment connect thin segment The position of the end face connect extended to outside thin segment is that is, boss, tie down screw 550 are locked by being screwed on thin segment Positioning plate 530 is limited in centre by screw rod 550 and thick section.

Second of form, tie down screw 550 are cased with thrust bearing outside, and tie down screw 550 and the blowout patche of thrust bearing are fixed Connection, positioning plate 530 are connect with the seat ring of thrust bearing.

Further, pedestal 510 is equipped with pin shaft collecting tank 520 towards the side of main part 110；

The opening of pin shaft collecting tank 520 and the outlet of guide channel are oppositely arranged；

In order to take turns after dish axle 310 ejects pin shaft, pin shaft can be fallen directly into pin shaft collecting tank 520.

It can facilitate access in pin shaft collecting tank 520, pin shaft collecting tank 520 be done arranged below for pin shaft:

As shown in figure 4, from 520 inlet of pin shaft collecting tank to the direction far from main part 110, in pin shaft collecting tank 520 Diameter is gradually reduced, and to form the flaring structure of opening upwards, falls into pin shaft collecting tank 520 convenient for pin shaft.

Further, as shown in figure 4, pin shaft collecting tank 520 runs through pedestal 510, pin shaft collecting tank 520 is far from main part 110 exit edge is equipped with extension part 545, and pin shaft collecting tank 520 is combined with capping far from the exit of main part 110 541, extension part 545 is equipped with second and runs through through-hole；

As shown in Figures 2 and 3, the edge for covering 541 is equipped with pillar 542, and pillar 542 is for being matched with second through through-hole In；

Pillar 542 is equipped with lateral groove far from the end sidewalls of capping 541, and finite place piece 544, limit are cooperated in lateral groove Elastic component 543 is equipped between position part 544 and the slot bottom of lateral groove, so that locating part 544 pops up lateral groove and blocks extension part 545 or retract lateral groove；

When being intended to open capping 541, locating part 544 only need to be pressed, pillar 542 is taken out in through-hole from second； Conversely, capping 541 to be closed, will press locating part 544, by the insertion of pillar 542 second in through-hole, worn to locating part 544 Second is crossed after through-hole, outside automatic spring lateral groove, extension part 545 is blocked under the action of elastic component 543 for locating part 544 Firmly, 541 lockings are covered.

Wherein, elastic component 543 can be helical spring or rubber block etc..

Specifically, cover 541 a side and 520 outlet edge of pin shaft collecting tank it is hinged, 541 other ends of capping are by convex Column 542 is matched with the second of extension part 545 in through-hole, and blocks extension part 545 using the locating part 544 in pillar 542, It is locked so that 541 will be covered with pedestal 510；

In addition to this it is possible to which the ambient separation in capping 541 is distributed multiple pillars 542, the outlet of pin shaft collecting tank 520 Locate edge and the multiple and one-to-one extension part 545 of pillar 542 is set, blocks extension part using the locating part 544 in pillar 542 545,541 will be covered and locked with pedestal 510.

Compared with prior art, outdoor disconnector cylindrical pin extracting tool provided by the embodiment of the utility model have with Lower advantage:

Outdoor disconnector cylindrical pin extracting tool provided by the utility model when in use, will be led using locking assembly Body portion 110 is fixed on link mechanism junction, is aligned the outlet of guide channel with pin shaft to be removed, and make take turns dish axle 310 with The tilt angle of pin shaft to be removed is consistent, and operator's hand rotational drive arm, the above-mentioned end of actuating arm is around rotary shaft Rotation, and slided with runner disc axis 310 along guide channel, until the end of wheel dish axle 310 withstands on the end of pin shaft to be removed, after Continuous rotational drive arm makes to take turns dish axle 310 for pin shaft to be removed ejection link mechanism, the disassembly of pin shaft, whole process can be completed Without beaing pin shaft, but wheel dish axle 310 slowly ejection pin shaft is used, effectively prevents the component near pin shaft and damaged because of vibration It is bad；In addition, operator only needs rotational drive arm can be easily with driving wheel using lever principle far from the end of wheel dish axle 310 Dish axle 310 is moved along guide channel, and operation can once eject pin shaft, with the form phase for taking hammer to beat pin shaft repeatedly Than time saving and energy saving.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of outdoor disconnector cylindrical pin extracting tool characterized by comprising main part, wheel dish axle, actuating arm and Locking assembly；

It is equipped in the main part and is through to external guide channel, the wheel dish axle is snug fit in the guide channel；

The one end of the actuating arm and the main part are rotatablely connected, and the shaft of the actuating arm is perpendicular to the wheel disc Axis, the end of the actuating arm and wheel dish axle transmission cooperate, so that the wheel dish axle is reciprocal along the guide channel Movement；

The locking assembly is used to the main part being locked at link mechanism junction.

2. outdoor disconnector cylindrical pin extracting tool according to claim 1, which is characterized in that the actuating arm packet Driving arm body and drive disk are included, one end of the driving arm body is connect with the drive disk；

The peripheral side of the drive disk passes through tooth and wheel dish axle engaged transmission.

3. outdoor disconnector cylindrical pin extracting tool according to claim 1, which is characterized in that the actuating arm Quantity is more than or equal to two, and two actuating arms are symmetrically disposed on the wheel dish axle two sides.

4. outdoor disconnector cylindrical pin extracting tool according to claim 1, which is characterized in that the guide channel Outlet edge be equipped with circular orientation set.

5. outdoor disconnector cylindrical pin extracting tool according to claim 1, which is characterized in that the locking assembly Including pedestal and multiple tie down screws, the outlet of the pedestal and the guide channel is oppositely arranged；

The outdoor disconnector cylindrical pin extracting tool further includes interconnecting piece, and the edge of the pedestal and the main part are logical Cross the interconnecting piece connection；

The tie down screw cooperates through the pedestal and by screw thread and the pedestal, so that the end of the tie down screw Close to or far from the main part.

6. outdoor disconnector cylindrical pin extracting tool according to claim 5, which is characterized in that the locking assembly It further include positioning plate, the positioning plate is set to the pedestal towards the end face of the main part；

The tie down screw is rotatablely connected by shaft and the positioning plate of own axes.

7. outdoor disconnector cylindrical pin extracting tool according to claim 6, which is characterized in that the positioning plate is set There are multiple first to be greater than the outer diameter of the tie down screw, the tie down screw through the internal diameter of through-hole through through-hole, described first Described first is matched in through-hole；

The side wall of the tie down screw is equipped with boss, and the boss is set to side of the positioning plate far from the main part.

8. outdoor disconnector cylindrical pin extracting tool according to claim 5, which is characterized in that the pedestal direction The side of the main part is equipped with pin shaft collecting tank；

The opening of the pin shaft collecting tank and the outlet of the guide channel are oppositely arranged.

9. outdoor disconnector cylindrical pin extracting tool according to claim 8, which is characterized in that received from the pin shaft Collect slot inlet to the direction far from the main part, the pin shaft collecting tank internal diameter is gradually reduced.

10. outdoor disconnector cylindrical pin extracting tool according to claim 8, which is characterized in that the pin shaft is received Collect slot and run through the pedestal, the pin shaft collecting tank is equipped with extension part, and the pin far from the exit edge of the main part Axis collecting tank is combined with capping far from the exit of the main part, and the extension part is equipped with second and runs through through-hole；

The edge of the capping is equipped with pillar, and the pillar is for being matched with described second in through-hole；

The pillar is equipped with lateral groove far from the end sidewalls of the capping, cooperates finite place piece, institute in the lateral groove It states and is equipped with elastic component between locating part and the slot bottom of the lateral groove, so that the locating part pops up the lateral groove and blocks The extension part retracts the lateral groove.