CN218202741U - Locking device - Google Patents

Abstract

The utility model provides a locking device, locking device includes: a base; the movable seat is movably arranged above the base; the locking subassembly is located one side of sliding seat, and the locking subassembly includes locking seat and the movably stop pin of wearing to locate the locking seat, and the stop pin is along horizontal extension, and the lateral wall of sliding seat is provided with the locking groove, and the stop pin has the unlocking position who inserts the latched position of locating the locking groove and break away from the locking groove, and when the stop pin was located the latched position, form the chip mounting groove between the lower surface of sliding seat and the upper surface of base. Through the technical scheme provided by the application, the problem that the supporting and fixing structure of the sequencing chip in the related technology is difficult to install and maintain can be solved.

Description

Locking device

Technical Field

The utility model relates to an anchor clamps technical field particularly, relates to a locking device.

Background

The portable gene sequencer is a device which transfers a reagent to a sequencing chip through a kit and puts the sequencing chip into sequencing equipment to obtain required gene data.

In the related art, the sequencing chip needs to be supported and fixed by means of matching of the tray, the motor and other auxiliary parts, and then can be matched with a corresponding circuit board to realize gene sequencing.

However, the supporting and fixing structure of the sequencing chip in the related art has a problem of difficulty in installation and maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a locking device to solve the support and the fixed knot structure of the sequencing chip among the correlation technique, there is the problem of installation and maintenance difficulty.

The utility model provides a locking device, locking device includes: a base; the movable seat is movably arranged above the base; the locking subassembly is located one side of sliding seat, and the locking subassembly includes locking seat and the movably stop pin of wearing to locate the locking seat, and the stop pin is along horizontal extension, and the lateral wall of sliding seat is provided with the locking groove, and the stop pin has the unlocking position who inserts the latched position of locating the locking groove and break away from the locking groove, and when the stop pin was located the latched position, form the chip mounting groove between the lower surface of sliding seat and the upper surface of base.

Further, the locking assembly further comprises a driving knob in driving connection with the locking pin, the driving knob is rotatably arranged on the locking seat, and the driving knob can drive the locking pin to move from the locking position to the unlocking position.

Further, the locking subassembly still includes the lockplate, and the movable seat was kept away from in the locking seat to the movably setting of lockplate, and the stop pin wears out the locking seat and is connected with the lockplate, and the drive knob is connected with the lockplate drive, and the drive knob can drive the direction removal that the locking seat was kept away from to the locking plate orientation.

Further, the locking seat is rotationally worn to locate along vertical the drive knob, is provided with the recess on the lateral wall of drive knob, and the lockplate is provided with the arch towards one side of locking seat, and the arch is along transversely inserting and locating the locking seat and correspond the recess setting, and under the circumstances of the inner wall looks butt of arch and recess, the stop pin is located latched position, and under the circumstances of the lateral wall looks butt of drive knob rotation to arch and drive knob, the stop pin is switched to unblock position by latched position.

Further, the locking assembly further comprises a return spring sleeved on the periphery of the locking pin, an annular boss is arranged on the side wall of the locking pin, and two ends of the return spring are respectively abutted to the annular boss and the locking seat.

Further, locking device still reminds the structure including the assembly, and the structure is reminded including grafting complex location pearl and constant head tank to the assembly, and one side of locking seat towards the sliding seat is provided with the reference column, and the location pearl sets up the tip at the reference column, and the constant head tank setting is on the lateral wall of sliding seat, and under the condition that the stop pin is located latched position, the location pearl is located the constant head tank.

Furthermore, the locking device further comprises a limiting part, the lower end of the limiting part is connected with the base, the upper end of the limiting part is penetrated through the movable seat, the upper end of the limiting part is provided with a limiting surface, and the limiting surface is in limiting fit with the movable seat under the condition that the locking pin is located at the locking position.

Further, the locating part includes the limiting plate and follows the connecting piece of vertical extension, and the limiting plate is located the movable seat and keeps away from one side of base, and the lower surface of limiting plate forms spacing face, and the lower extreme and the base of connecting piece are connected, and the upper end of connecting piece is worn to locate the movable seat and is connected with limiting plate.

Further, the connecting piece includes connecting cylinder and connecting bolt, and the connecting cylinder wears to locate the base and is connected with the base, and connecting bolt wears to locate sliding seat and limiting plate, and connecting bolt's lower extreme is inserted and is located the connecting cylinder and with connecting cylinder threaded connection.

Furthermore, locking device is still including setting up the jacking spring between base and sliding seat, and the both ends of jacking spring are respectively with base and sliding seat looks butt, and under the stop pin was located latched position's the condition, the vertical rebound of sliding seat can be driven to the jacking spring.

Furthermore, the sliding seat comprises a seat body and two strip-shaped plates connected with the lower surface of the seat body, the two strip-shaped plates are respectively located at two ends of the seat body and extend along the width direction of the seat body, and under the condition that the locking pin is located at the locking position, the lower surface of the seat body, the upper surface of the base and two opposite side surfaces of the two strip-shaped plates jointly enclose a chip mounting groove.

Use the technical scheme of the utility model, locking device includes base, sliding seat and locking subassembly, when using this locking device, places the sequencing chip between the lower surface of sliding seat and the upper surface of base, removes the sliding seat to remove the locking round pin, make the locking round pin remove to inserting the latched position of locating the locking groove, can utilize the chip mounting groove between base and the sliding seat to fix the sequencing chip. When the sequencing chip is required to be taken out, the locking pin is only required to be moved to the unlocking position which is separated from the locking groove from the locking position, and the movable seat can be moved relative to the base so as to take out the sequencing chip from the chip mounting groove. Compared with the supporting and fixing structure of the sequencing chip in the related technology, the structure is simpler, and the installation and maintenance are simpler and more convenient.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded view of a locking device provided by an embodiment of the present invention;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

fig. 3 shows a schematic structural view of the locking pin of fig. 1;

fig. 4 is a schematic structural view illustrating a locking pin of a locking device according to an embodiment of the present invention in an unlocked position;

fig. 5 is a schematic structural view illustrating a locking pin of a locking device according to an embodiment of the present invention in a locking position;

fig. 6 is a front view showing a locking pin of the locking device according to the embodiment of the present invention in a locking position;

fig. 7 shows a cross-sectional view of a locking device provided by an embodiment of the present invention;

fig. 8 shows a further cross-sectional view of a locking device provided by an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a base;

20. a movable seat; 21. a locking groove; 22. a base body; 23. a strip-shaped plate;

30. a locking assembly; 31. a locking seat; 32. a locking pin; 321. an annular boss; 33. a drive knob; 331. a groove; 34. a locking plate; 341. a protrusion; 342. a positioning column; 35. a return spring;

40. a chip mounting groove;

50. assembling a reminding structure; 51. a positioning bead; 52. positioning a groove;

60. a limiting member; 61. a limiting surface; 62. a limiting plate; 63. a connecting member; 631. a connecting cylinder; 632. a connecting bolt;

70. and (4) a jacking spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 8, the embodiment of the present invention provides a locking device, which includes a base 10, a movable seat 20 and a locking assembly 30, wherein the movable seat 20 is movably disposed above the base 10; the locking assembly 30 is located one side of the movable seat 20, the locking assembly 30 includes a locking seat 31 and a locking pin 32 movably penetrating through the locking seat 31, the locking pin 32 transversely extends, the side wall of the movable seat 20 is provided with a locking groove 21, the locking pin 32 has a locking position inserted into the locking groove 21 and an unlocking position separated from the locking groove 21, and when the locking pin 32 is located at the locking position, a chip mounting groove 40 is formed between the lower surface of the movable seat 20 and the upper surface of the base 10.

Use the technical scheme of the utility model, locking device includes base 10, sliding seat 20 and locking subassembly 30, when using this locking device, places the sequencing chip between the lower surface of sliding seat 20 and base 10's upper surface, removes sliding seat 20 to remove the locking round pin 32, make locking round pin 32 remove to inserting the latched position of locating locking groove 21, can utilize the chip mounting groove 40 between base 10 and the sliding seat 20 to fix the sequencing chip. When the sequencing chip needs to be taken out, the movable seat 20 can be moved relative to the base 10 by moving the locking pin 32 from the locking position to the unlocking position which is separated from the locking groove 21, so that the sequencing chip can be taken out from the chip mounting groove 40. Compared with the supporting and fixing structure of the sequencing chip in the related technology, the structure is simpler, and the installation and maintenance are simpler and more convenient.

In the present embodiment, the locking seat 31 is detachably connected to the base 10 to fix the locking seat 31.

It should be noted that, when the locking pin is located at the unlocking position disengaged from the locking groove 21, the movable seat 20 can move relative to the base 10 to open the chip mounting groove 40, so that the sequencing chip can be taken out.

Specifically, the locking assemblies 30 are disposed on two sides of the movable seat 20, so as to lock two ends of the movable seat 20, and further enhance the locking effect of the movable seat 20, so as to fix the sequencing chip more stably.

Wherein a guide slope is provided at an end of the locking pin 32, by which the locking pin 32 can be quickly aligned with the locking groove 21 when the locking pin 32 is switched to the locking position.

As shown in fig. 1, 2 and 7, the locking assembly 30 further includes a driving knob 33 in driving connection with the locking pin 32, the driving knob 33 is rotatably disposed on the locking seat 31, and the driving knob 33 can drive the locking pin 32 to move from the locking position to the unlocking position. The driving mode of driving the locking pin 32 by the driving knob 33 has the advantage of simple structure.

Wherein, the driving knob 33 can be both along transversely wearing to locate locking seat 31, can also vertically wear to locate locking seat 31, as long as can make the stop pin 32 switch between latched position and unblock position can.

In the present embodiment, the end of the driving knob 33 is exposed to the locking seat 31 to form a knob end for convenient operation by the user.

As shown in fig. 1 and 2, the locking assembly 30 further includes a locking plate 34, the locking plate 34 is movably disposed on a side of the locking seat 31 away from the movable seat 20, the locking pin 32 passes through the locking seat 31 and is connected to the locking plate 34, the driving knob 33 is drivingly connected to the locking plate 34, and the driving knob 33 can drive the locking plate 34 to move in a direction away from the locking seat 31. The structure that the locking plate 34 is driven by the driving knob 33 can enable the locking plate 34 to drive the locking pins 32 to move simultaneously, and has the advantage of simple driving structure.

In the present embodiment, two locking pins 32 are provided at intervals along the length direction of the locking plate 34, and both the locking pins 32 can perform a locking function, so that the locking effect of the movable seat 20 is better.

Specifically, one end of the locking pin 32, which is far away from the movable seat 20, is exposed out of the locking seat 31, and an annular groove is formed in a side wall of the locking pin 32, and the locking pin 32 can be limited by arranging a spring piece to be clamped in the annular groove.

As shown in fig. 1, 2, 3 and 7, the driving knob 33 is rotatably inserted through the locking seat 31 in the vertical direction, a groove 331 is provided on a side wall of the driving knob 33, a protrusion 341 is provided on a side of the locking plate 34 facing the locking seat 31, the protrusion 341 is inserted into the locking seat 31 in the transverse direction and is disposed corresponding to the groove 331, the locking pin 32 is located at the locking position when the protrusion 341 abuts against an inner wall of the groove 331, and the locking pin 32 is switched from the locking position to the unlocking position when the driving knob 33 is rotated until the protrusion 341 abuts against the side wall of the driving knob 33. The driving mode of rotating the driving knob 33 and matching the side wall and the groove 331 with the protrusion 341 is adopted, so that the structure is simple and the operation is convenient.

In this embodiment, the lower end of the driving knob 33 is provided with a locking piece, by which the driving knob 33 can be connected with the locking seat 31, so that the vertical position of the driving knob 33 is kept unchanged, so that the recess 331 does not form a misalignment with the protrusion 341 in the vertical direction.

As shown in fig. 1 and 7, the locking assembly 30 further includes a return spring 35 sleeved on the periphery of the locking pin 32, an annular boss 321 is disposed on the side wall of the locking pin 32, and two ends of the return spring 35 are respectively abutted against the annular boss 321 and the locking seat 31. When the lock pin 32 is located at the unlock position, the return spring 35 is in a compressed state, and the lock pin 32 can be returned from the unlock position to the lock position by the elastic force of the return spring 35.

As shown in fig. 1 and fig. 2, the locking device further includes an assembly reminding structure 50, the assembly reminding structure 50 includes a positioning bead 51 and a positioning groove 52 which are matched in an insertion manner, one side of the locking seat 31 facing the movable seat 20 is provided with a positioning column 342, the positioning bead 51 is arranged at an end of the positioning column 342, the positioning groove 52 is arranged on a side wall of the movable seat 20, and when the locking pin 32 is located at the locking position, the positioning bead 51 is located in the positioning groove 52. With the assembly reminding structure 50, before the locking pin 32 is reset to the locking position, the operator can be reminded that the movable seat 20 is in place and the movable seat 20 is pre-locked by the sound of the positioning ball 51 hitting the positioning groove 52, and the locking pin 32 can be released to be inserted into the locking groove 21.

In the present embodiment, the positioning column 342 is inserted into the locking seat 31. The assembly reminding structure 50 is provided with two sets, and two positioning grooves 52 are arranged at intervals along the length direction of the locking seat 31.

As shown in fig. 2 and 8, the locking device further includes a limiting member 60, a lower end of the limiting member 60 is connected to the base 10, an upper end of the limiting member 60 is inserted into the movable base 20, an upper end of the limiting member 60 has a limiting surface 61, and the limiting surface 61 is in limiting fit with the movable base 20 when the locking pin 32 is located at the locking position. By using the limiting member 60, a limiting effect can be formed on the movable seat 20, so that the movable seat 20 can move within a certain range, thereby reducing the moving range of the movable seat 20 and reducing the occupied space of the locking device.

As shown in fig. 2 and 8, the limiting member 60 includes a limiting plate 62 and a connecting member 63 extending vertically, the limiting plate 62 is located on one side of the movable seat 20 away from the base 10, a limiting surface 61 is formed on a lower surface of the limiting plate 62, a lower end of the connecting member 63 is connected with the base 10, and an upper end of the connecting member 63 penetrates through the movable seat 20 and is connected with the limiting plate 62. Adopt limiting plate 62 to carry on spacingly to the sliding seat 20, can increase the area of contact between limiting plate 62 and the sliding seat 20, make limiting plate 62 better to the spacing effect of sliding seat 20.

In this embodiment, the limiting member 60 includes two connecting members 63, and the two connecting members 63 are disposed at intervals along the width direction of the movable base 20 and at two ends of the limiting plate 62.

It should be noted that the limiting surface 61 may be provided by the limiting plate 62, or may be provided by the connecting member 63 directly.

As shown in fig. 2 and 8, the connecting member 63 includes a connecting cylinder 631 and a connecting bolt 632, the connecting cylinder 631 penetrates through the base 10 and is connected with the base 10, the connecting bolt 632 penetrates through the movable seat 20 and the limiting plate 62, and the lower end of the connecting bolt 632 is inserted into the connecting cylinder 631 and is connected with the connecting cylinder 631 through threads. The connecting piece 63 with the structure has the advantages of simple connecting structure and convenient operation.

In this embodiment, the height position of the limiting surface 61 can be adjusted by adjusting the length of the connecting bolt 632 inserted into the connecting cylinder 631, and the height of the movable seat 20 at the unlocking position can be adjusted.

Wherein, the lower end of the connecting cylinder 631 is connected to the base 10 by a screw.

Specifically, still be provided with the uide bushing on the sliding seat 20, during base 10 was worn out and the uide bushing was stretched into to the upper end of connecting cylinder 631, utilized the uide bushing can form the guide effect to connecting cylinder 631 to make the alignment that connecting cylinder 631 and connecting bolt 632 can be better, sliding seat 20 moves more steadily.

As shown in fig. 1 and 8, the locking device further includes a jacking spring 70 disposed between the base 10 and the movable seat 20, two ends of the jacking spring 70 respectively abut against the base 10 and the movable seat 20, and the jacking spring 70 can drive the movable seat 20 to move vertically upward when the locking pin 32 is in the locking position. By the elastic force of the lift-up spring 70, the movable seat 20 can be automatically moved upward when the locking pin 32 is located at the unlocking position, so that the sequencing chip can be taken out from the chip mounting groove 40.

It should be noted that the movable base 20 can be automatically moved upward by the characteristic that magnets repel each other.

Wherein, in order to make the movable seat 20 move up more steadily, be provided with four jacking springs 70 between base 10 and the movable seat 20, four jacking springs 70 set up four corner positions at the movable seat 20 respectively.

As shown in fig. 1 and 6, the movable seat 20 includes a seat body 22 and two strip-shaped plates 23 connected to the lower surface of the seat body 22, the two strip-shaped plates 23 are respectively located at two ends of the seat body 22 and extend along the width direction of the seat body 22, and when the locking pin 32 is located at the locking position, the lower surface of the seat body 22, the upper surface of the base 10 and two opposite side surfaces of the two strip-shaped plates 23 jointly enclose a chip mounting groove 40. The movable seat 20 with the structure and the chip mounting groove 40 formed by matching the base 10 can be matched with the appearance of a sequencing chip, and can be realized only by processing the movable seat 20, so that the movable seat has the advantage of simple structure.

Of course, the locking device provided by the embodiment can be used for clamping chips and can also be used as a common clamp for clamping other objects.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A locking device, characterized in that it comprises:

a base (10);

the movable seat (20) is movably arranged above the base (10);

locking subassembly (30), be located one side of sliding seat (20), locking subassembly (30) are including locking seat (31) and movably wear to locate locking pin (32) of locking seat (31), locking pin (32) are along transversely extending, the lateral wall of sliding seat (20) is provided with locking groove (21), locking pin (32) have insert locate the latched position of locking groove (21) and break away from the unblock position of locking groove (21) locking pin (32) are located during the latched position, the lower surface of sliding seat (20) with form chip mounting groove (40) between the upper surface of base (10).

2. The locking device according to claim 1, characterized in that the locking assembly (30) further comprises a drive knob (33) in driving connection with the locking pin (32), the drive knob (33) being rotatably arranged on the locking seat (31), the drive knob (33) being capable of driving the locking pin (32) from the locking position to the unlocking position.

3. The locking device according to claim 2, characterized in that the locking assembly (30) further comprises a locking plate (34), the locking plate (34) is movably disposed on a side of the locking seat (31) away from the movable seat (20), the locking pin (32) penetrates through the locking seat (31) and is connected with the locking plate (34), the driving knob (33) is in driving connection with the locking plate (34), and the driving knob (33) can drive the locking plate (34) to move towards a direction away from the locking seat (31).

4. A locking device according to claim 3, characterized in that the driving knob (33) is vertically and rotatably inserted through the locking seat (31), a groove (331) is provided on a side wall of the driving knob (33), a protrusion (341) is provided on one side of the locking plate (34) facing the locking seat (31), the protrusion (341) is transversely inserted into the locking seat (31) and is provided corresponding to the groove (331), the locking pin (32) is located at the locking position when the protrusion (341) abuts against an inner wall of the groove (331), and the locking pin (32) is switched from the locking position to the unlocking position when the driving knob (33) is rotated until the protrusion (341) abuts against a side wall of the driving knob (33).

5. The locking device according to claim 3, characterized in that the locking assembly (30) further comprises a return spring (35) sleeved on the periphery of the locking pin (32), an annular boss (321) is arranged on the side wall of the locking pin (32), and two ends of the return spring (35) are respectively abutted against the annular boss (321) and the locking seat (31).

6. The locking device according to any one of claims 1 to 5, characterized in that the locking device further comprises an assembly reminding structure (50), the assembly reminding structure (50) comprises a positioning bead (51) and a positioning groove (52) which are in plug-in fit, a positioning column (342) is arranged on one side of the locking seat (31) facing the movable seat (20), the positioning bead (51) is arranged at the end of the positioning column (342), the positioning groove (52) is arranged on the side wall of the movable seat (20), and the positioning bead (51) is located in the positioning groove (52) when the locking pin (32) is located at the locking position.

7. The locking device according to any one of claims 1 to 5, further comprising a limiting member (60), wherein a lower end of the limiting member (60) is connected to the base (10), an upper end of the limiting member (60) is disposed through the movable seat (20), an upper end of the limiting member (60) has a limiting surface (61), and the limiting surface (61) is in limiting fit with the movable seat (20) when the locking pin (32) is located at the locking position.

8. The locking device according to claim 7, wherein the limiting member (60) comprises a limiting plate (62) and a connecting member (63) extending vertically, the limiting plate (62) is located on one side of the movable seat (20) away from the base (10), the lower surface of the limiting plate (62) forms the limiting surface (61), the lower end of the connecting member (63) is connected with the base (10), and the upper end of the connecting member (63) penetrates through the movable seat (20) and is connected with the limiting plate (62).

9. The locking device according to claim 8, characterized in that the connecting piece (63) comprises a connecting cylinder (631) and a connecting bolt (632), the connecting cylinder (631) is arranged through the base (10) and connected with the base (10), the connecting bolt (632) is arranged through the movable seat (20) and the limiting plate (62), and the lower end of the connecting bolt (632) is inserted into the connecting cylinder (631) and is in threaded connection with the connecting cylinder (631).

10. The locking device according to any one of claims 1 to 5, characterized in that it further comprises a jacking spring (70) arranged between said base (10) and said movable seat (20), the two ends of said jacking spring (70) being in abutment with said base (10) and said movable seat (20), respectively, said jacking spring (70) being capable of driving said movable seat (20) to move vertically upwards with said locking pin (32) in said locking position.

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