阅读说明：本技术 一种地铁施工用盾构管片拼接装置 (Shield segment splicing device for subway construction ) 是由 王双月 于 2021-10-20 设计创作，主要内容包括：本发明公开了一种地铁施工用盾构管片拼接装置,属于地铁施工技术领域。其包括呈左右对称结构设置的圆筒A与圆筒B,圆筒A环形外壁以及圆筒B环形外壁外侧端均呈环状线性等间距结构嵌设有多个圆垫,圆筒A右壁中部固设有插柱,圆筒B左壁相对于插柱的位置开设有插槽,插柱右端中部开设有贯通口,插槽右端开设有内腔,内腔右壁中部同轴固定连接有基杆,基杆左壁中部插设有延长杆,延长杆左端同轴固定连接有卡块,卡块左端同轴固设有顶块,贯通口上下内壁相对于卡块上下两端与顶块上下两端的位置分别开设有卡槽与圆槽。本发明既提高了盾构管片连接方式的便捷度,也大大增强了纵向盾构管片之间的连接紧密性,实用性强。(The invention discloses a shield segment splicing device for subway construction, and belongs to the technical field of subway construction. It is including being drum A and drum B that bilateral symmetry structure set up, drum A annular outer wall and drum B annular outer wall outside end all are cyclic annular linear equidistant structure and inlay and are equipped with a plurality of cushions, drum A right wall middle part has set firmly and has inserted the post, drum B left wall has seted up the slot for the position of inserting the post, it has seted up through the mouth to insert post right-hand member middle part, the inner chamber has been seted up to the slot right-hand member, the coaxial fixedly connected with base rod in inner chamber right wall middle part, base rod left wall middle part is inserted and is equipped with the extension rod, the coaxial fixedly connected with fixture block of extension rod left end, the coaxial kicking block that has set firmly of fixture block left end, draw-in groove and circular slot have been seted up respectively to the position at both ends about both ends and kicking block about inner wall about the through mouth. The invention not only improves the convenience of the shield segment connection mode, but also greatly enhances the connection tightness between the longitudinal shield segments, and has strong practicability.)

1. The utility model provides a shield constructs section of jurisdiction splicing apparatus for subway construction, is including drum A (1) and drum B (2) that are bilateral symmetry structure setting, its characterized in that: the cylinder A (1) annular outer wall and the cylinder B (2) annular outer wall are of annular linear equidistant structures, a plurality of round cushions (3) are embedded in the annular linear equidistant structures, the round cushions (3) are internally hollow to form cavities (4), a plurality of compression springs A (5) are fixedly arranged in the cavities (4) at arc equidistant intervals, the middle part of the right wall of the cylinder A (1) is fixedly provided with an insert column (6), the left wall of the cylinder B (2) is provided with a slot (7) relative to the position of the insert column (6), the insert column (6) is in inserted connection and matching with the slot (7), the left end of the outer wall of the insert column (6) is provided with a plurality of grooves (8) at annular equidistant intervals, the inner wall of each groove (8) is slidably connected with a clamping plate (10) through two compression springs B (9) which are symmetrically fixedly arranged, and the left end of the inner wall of the slot (7) is provided with a plate groove (11) relative to the position of the clamping plate (10), the clamping plate (10) is matched with the plate groove (11) in a clamping manner, a through hole (12) is formed in the middle of the right end of the inserting column (6), two guide blocks (13) are symmetrically and fixedly arranged at the right end of the outer wall of the inserting column (6) relative to the positions of the upper side and the lower side of the through hole (12), two guide grooves (14) are formed in the left end of the inner wall of the inserting groove (7) in a vertically symmetrical structure, the guide blocks (13) are in sliding fit with the guide grooves (14), an inner cavity (15) is formed in the right end of the inserting groove (7), a base rod (16) is coaxially and fixedly connected to the middle of the right wall of the inner cavity (15), an extension rod (17) is inserted into the middle of the left wall of the base rod (16), a compression spring C (18) is fixedly arranged between the right end of the extension rod (17) and the inner wall of the base rod (16), the extension rod (17) is in sliding fit with the inner portion of the base rod (16), and a clamping block (19) is coaxially and fixedly connected to the left end of the extension rod (17), the left end of the fixture block (19) is coaxially and fixedly provided with an ejector block (20), the positions of the upper inner wall and the lower inner wall of the through hole (12) relative to the upper end and the lower end of the fixture block (19) and the upper end and the lower end of the ejector block (20) are respectively provided with a clamping groove (21) and a circular groove (22), the inner wall of the slot (7) is annular, linear and equidistant, and is provided with a plurality of through holes (23), and an extrusion block (24) is inserted into the through holes (23).

2. The shield segment splicing device for subway construction as claimed in claim 1, wherein: extrusion piece (24) outer wall middle part symmetry has set firmly two slider (25), spout (26) have been seted up for the position of slider (25) to through hole (23) inner wall, slider (25) and spout (26) sliding fit, extrusion piece (24) outer wall both ends are linear equidistant a plurality of annulars (27) of having seted up, extrusion piece (24) middle part is adjacent two round chamber (28) have been seted up to position between annular (27), round chamber (28) circumference inner wall is annular equidistant a plurality of grooves (29) of running through of having seted up.

3. The shield segment splicing device for subway construction as claimed in claim 1, wherein: the right wall of the cylinder A (1) is tightly attached to the left wall of the cylinder B (2), and the round pad (3) is of an arc structure with round corners at two ends.

4. The shield segment splicing device for subway construction as claimed in claim 1, wherein: the outer side wall of the clamping plate (10) is of an arc surface structure, and the edges of the upper inner wall and the lower inner wall of the through hole (12) are of round angle structures.

5. The shield segment splicing device for subway construction as claimed in claim 1, wherein: the ejection block (20) is of a spherical structure, the left wall of the ejection block (20) is in extrusion fit with the right end of the upper inner wall and the lower inner wall of the through hole (12), the circular groove (22) is in plug-in fit with the ejection block (20), the fixture block (19) is of a circular truncated cone structure with a small left side and a large right side, and the fixture block (19) is in clamping fit with the clamping groove (21).

6. The shield segment splicing device for subway construction as claimed in claim 5, wherein: guide block (13) lateral wall right-hand member is arc surface structure, guide way (14) inner wall is the inclined plane structure of left right side gradually to inboard side skew, guide block (13) outer wall and guide way (14) inner wall extrusion fit, inner chamber (15) are the cylinder structure that the diameter size is greater than slot (7) diameter size, guide block (13) top surface and inner chamber (15) top surface clearance fit.

7. The shield segment splicing device for subway construction as claimed in claim 6, wherein: the length of the guide block (13) is selected to satisfy the following rules: when the guide block (13) completely slides out of the guide groove (14), the extension rod (17) slides to the maximum stroke position in the base rod (16), the top block (20) squeezes the through hole (12) to open upwards and downwards, so that the top block (20) and the clamping block (19) are squeezed into the circular groove (22) and the clamping groove (21) in the process that the inserting column (6) is continuously inserted into the inserting groove (7).

8. The shield segment splicing device for subway construction as claimed in claim 7, wherein: when the top block (20) and the clamping block (19) are completely clamped in the circular groove (22) and the clamping groove (21), the clamping plate (10) at the left end of the outer wall of the inserting column (6) can be clamped in the plate groove (11) to further limit the inserting column (6).

9. The shield segment splicing device for subway construction as claimed in claim 2, wherein: the extrusion block (24) is made of rubber, the outer wall of the extrusion block (24) is in sliding contact with the inner wall of the through hole (23), the sliding block (25) is in sliding fit with the sliding groove (26), and the inner side end of the extrusion block (24) is in extrusion fit with the left end of the outer wall of the insertion column (6).

Technical Field

The invention relates to the technical field of subway construction, in particular to a shield segment splicing device for subway construction.

Background

The shield segment is a main assembly component for shield construction, is the innermost barrier of the tunnel and plays a role in resisting soil layer pressure, underground water pressure and some special loads. The shield segments are the permanent lining structure of the tunnel by the shield method, the quality of the shield segments directly relates to the overall quality and safety of the tunnel, the waterproof performance and the durability of the tunnel are influenced, after the shield is pushed, the shield segments need to be rapidly assembled into a ring, the connection between two longitudinally connected shield segments is difficult based on the trend of the subway tunnel, two holes are symmetrically formed on the plane of the shield segments in the production process of the shield segments, most workers use connecting bolts to connect the holes of the two shield segments to fix the longitudinally adjacent shield segments, however, the inner wall of the hole is damaged by the connection mode, the shield segments are the important factor for guaranteeing the subway running safety in construction, the workers should avoid damaging the shield segments as much as possible, and the problem of insufficient stability of fixation can be caused if the splicing is simply carried out after the fixing rods are inserted into the holes, in view of this, we propose a shield segment splicing device for subway construction.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a shield segment splicing device for subway construction, which aims to solve the problems in the background technology.

2. Technical scheme

A shield segment splicing device for subway construction comprises a cylinder A and a cylinder B which are arranged in a bilateral symmetry structure, wherein a plurality of circular cushions are embedded in the outer side ends of the circular outer wall of the cylinder A and the circular outer wall of the cylinder B in an annular linear equidistant structure, a cavity is formed in the circular cushions, a plurality of compression springs A are fixedly arranged in the cavity in an arc equidistant manner, an inserting column is fixedly arranged in the middle of the right wall of the cylinder A, a slot is formed in the left wall of the cylinder B relative to the inserting column, the inserting column is in inserted connection with the slot, a plurality of grooves are formed in the left end of the outer wall of the inserting column in an annular equidistant manner, clamping plates are slidably connected to the inner walls of the grooves through two compression springs B which are symmetrically and fixedly arranged, plate grooves are formed in the left end of the inner wall of the slot relative to the clamping plates, the clamping plates are in clamped connection with the plate grooves, and through holes are formed in the middle of the right end of the inserting column, two guide blocks are symmetrically and fixedly arranged at the right end of the outer wall of the inserted column relative to the upper side and the lower side of the through hole, the left end of the inner wall of the slot is provided with two guide grooves in a vertically symmetrical structure, the guide block is in sliding fit with the guide grooves, an inner cavity is arranged at the right end of the slot, a base rod is coaxially and fixedly connected with the middle part of the right wall of the inner cavity, an extension rod is inserted in the middle part of the left wall of the base rod, a compression spring C is fixedly arranged between the right end of the extension rod and the inner wall of the base rod, the extension rod is in sliding fit with the inside of the base rod, the left end of the extension rod is coaxially and fixedly connected with a clamping block, the left end of the clamping block is coaxially and fixedly provided with an ejecting block, the positions of the upper inner wall and the lower inner wall of the through hole, which are opposite to the upper end and the lower end of the fixture block and the upper end and the lower end of the top block, are respectively provided with a clamping groove and a circular groove, the inner wall of the slot is provided with a plurality of through holes in an annular linear shape at equal intervals, and the extrusion blocks are inserted into the through holes.

Preferably, two sliders have been set firmly to extrusion piece outer wall middle part symmetry, the spout has been seted up for the position of slider to the through hole inner wall, slider and spout sliding fit, extrusion piece outer wall both ends are linear equidistant and have seted up a plurality of annulars, extrusion piece middle part is adjacent two position between the annular has seted up the round cavity, round cavity circumference inner wall is annular equidistant and has seted up a plurality of grooves that pass through.

Preferably, the right wall of the cylinder A is tightly attached to the left wall of the cylinder B, and the round pad is of an arc structure with round corners at two ends.

Preferably, the outer side wall of the clamping plate is of an arc surface structure, and the edges of the upper inner wall and the lower inner wall of the through hole are of round angle structures.

Preferably, the ejector block is of a spherical structure, the left wall of the ejector block is in extrusion fit with the right ends of the upper inner wall and the lower inner wall of the through hole, the circular groove is in insertion fit with the ejector block, the fixture block is of a circular truncated cone structure with a small left and a large right, and the fixture block is in clamping fit with the clamping groove.

Preferably, the guide block lateral wall right-hand member is arc surface structure, the inclined plane structure of guide way inner wall for from a left side to the inside side skew gradually of right side, guide block outer wall and guide way inner wall extrusion fit, the inner chamber is the cylinder structure that the diameter size is greater than slot diameter size, guide block top surface and inner chamber top surface clearance fit.

Preferably, the length of the guide block is selected to satisfy the following rule: when the guide block completely slides out of the guide groove, the extension rod slides to the maximum stroke position in the base rod, the top block extrudes the through hole to open towards the upper side and the lower side, so that the top block and the clamping block are extruded into the circular groove and the clamping groove in the process that the inserting column is continuously inserted into the inserting groove.

Preferably, when the kicking block and fixture block complete joint are inside circular slot and draw-in groove, the cardboard of inserted column outer wall left end also can block into the inboard inslot and produce further restriction to the inserted column.

Preferably, the extrusion block is made of rubber, the outer wall of the extrusion block is in sliding contact with the inner wall of the through hole, the sliding block is in sliding fit with the sliding groove, and the inner side end of the extrusion block is in extrusion fit with the left end of the outer wall of the insertion column.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the connecting device is provided with the round pads, so that when a worker connects two shield segments in the longitudinal direction, the cylinder A and the cylinder B of the connecting device can be inserted into holes on the flat surfaces of the cylinder A and the cylinder B in advance respectively, the compression spring A extrudes the round pads to generate stronger extrusion force on the inner walls of the holes, the connecting strength between the cylinder A and the shield segments and the cylinder B and the shield segments can be improved by increasing the friction force between the round pads and the inner walls of the holes, and the connecting device is beneficial to the subsequent longitudinal connection of the two shield segments.

(2) The invention is provided with the inserting column and the inserting slot, the inserting column firstly enables the top block to extrude the fixture block and the extension rod towards the right side, so that the right end of the extension rod presses the compression spring C and retracts into the base rod, the top block can extrude the upper side and the lower side of the right end of the inserting column along the through hole under the elastic effect of the compression spring C, so that the top block and the fixture block can be extruded into the circular slot and the clamping slot, the top block and the fixture block can be wrapped by the right end of the inserting column under the toughness effect of the inserting column, meanwhile, the clamping plate positioned at the left end of the outer wall of the inserting column can be clamped into the plate slot to further limit the inserting column, the inserting column and the inserting slot can not be pulled out after the two shield segments are connected through the structure, the connecting strength between the cylinder A and the cylinder B is enhanced again, and the connecting tightness of the two shield segments is further improved.

(3) The invention is provided with the extrusion block, because the inner wall of the guide groove is of an inclined plane structure which gradually deviates inwards from left to right, the guide block can be extruded by the guide groove to press one side of the inserted column connected with the guide block towards the inner side, the right end of the inserted column can incline towards the direction of the through hole, so that a gap is generated between the outer wall of the right end of the inserted column and the inner wall of the slot, thereby forming a space which is convenient for the extrusion block to deform, and avoiding hard contact to extrude the extrusion block, the extrusion blocks at other positions are not in hard contact because the edges of the inner wall of the through hole are designed into round angles, when a plurality of ring grooves, round cavities and through grooves on the inner wall of the round cavities are arranged on the extrusion block, the deformation amount of the extrusion block is larger, a mutual extrusion force can be generated between the inserted column and the inner wall of a shield segment hole, so that the inserted column is connected with another segment connected with the shield, the fixed firmness of two shield segments is improved, and the practicability is high.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic cross-sectional view of the round pad of the present invention;

FIG. 4 is an exploded view of the cylinder A of the present invention;

FIG. 5 is a schematic cross-sectional view of a cylinder B of the present invention;

FIG. 6 is an exploded view of the base rod and the extension rod of the present invention;

fig. 7 is a schematic sectional structural view of the extrusion block of the present invention.

The reference numbers in the figures illustrate: 1. a cylinder A; 2. a cylinder B; 3. a round pad; 4. a cavity; 5. compressing the spring A; 6. inserting a column; 7. a slot; 8. a groove; 9. a compression spring B; 10. clamping a plate; 11. a plate groove; 12. a through opening; 13. a guide block; 14. a guide groove; 15. an inner cavity; 16. a base shaft; 17. an extension pole; 18. a compression spring C; 19. a clamping block; 20. a top block; 21. a card slot; 22. a circular groove; 23. a through hole; 24. extruding the block; 25. a slider; 26. a chute; 27. a ring groove; 28. a circular cavity; 29. through the slot.

Detailed Description

In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-7, the present invention provides a technical solution:

a shield segment splicing device for subway construction comprises a cylinder A1 and a cylinder B2 which are arranged in a bilateral symmetry structure, the outer side ends of the annular outer wall of the cylinder A1 and the annular outer wall of the cylinder B2 are both in an annular linear equidistant structure, a plurality of round cushions 3 are embedded in the round cushions 3, a hollow cavity 4 is formed in each round cushion 3, a plurality of compression springs A5 are fixedly arranged in each cavity 4 in an arc equidistant mode, an inserting column 6 is fixedly arranged in the middle of the right wall of the cylinder A1, a slot 7 is formed in the left wall of the cylinder B2 in the position corresponding to the inserting column 6, the inserting column 6 is in splicing fit with the slot 7, a plurality of grooves 8 are formed in the left end of the outer wall of the inserting column 6 in an annular equidistant mode, the inner wall of each groove 8 is slidably connected with a clamping plate 10 through two compression springs B9 which are symmetrically and fixedly arranged, a plate slot 11 is formed in the left end of the inner wall of the slot 7 in the position corresponding to the clamping plate 10, the clamping plate 10 is in clamping fit with the plate slot 11 in a clamping fit with the clamping way, a through hole 12 is formed in the middle of the right end of the inserting column 6, two guide blocks 13 are symmetrically and fixedly arranged at the right end of the outer wall of the insert column 6 relative to the positions of the upper side and the lower side of the through hole 12, the left end of the inner wall of the slot 7 is provided with two guide grooves 14 in an up-down symmetrical structure, the guide blocks 13 are in sliding fit with the guide grooves 14, the right end of the slot 7 is provided with an inner cavity 15, the middle part of the right wall of the inner cavity 15 is coaxially and fixedly connected with a base rod 16, the middle part of the left wall of the base rod 16 is inserted with an extension rod 17, a compression spring C18 is fixedly arranged between the right end of the extension rod 17 and the inner wall of the base rod 16, the extension rod 17 is in sliding fit with the inner part of the base rod 16, the left end of the extension rod 17 is coaxially and fixedly connected with a fixture block 19, the left end of the fixture block 19 is coaxially and fixedly provided with an ejector block 20, the positions of the upper end and the lower end of the upper inner wall of the through hole 12 relative to the upper end and the lower end of the fixture block 19 and the upper end of the ejector block 20 are respectively provided with a clamping groove 21 and a circular groove 22, the inner wall of the slot 7 is provided with a plurality of through hole 23 in an annular linear shape, a plurality of the through hole 23, and a plurality of the through hole 23 is inserted with an extrusion block 24, two sliders 25 have been set firmly to extrusion piece 24 outer wall middle part symmetry, and the spout 26 has been seted up for slider 25's position to through hole 23 inner wall, slider 25 and spout 26 sliding fit, and extrusion piece 24 outer wall both ends are linear equidistant a plurality of annulars 27 of having seted up, and extrusion piece 24 middle part has been seted up round cavity 28 for the position between two adjacent annulars 27, and round cavity 28 circumference inner wall is annular equidistant a plurality of through grooves 29 of having seted up.

Specifically, the right wall of the cylinder A1 is tightly attached to the left wall of the cylinder B2, the round pad 3 is of an arc structure with two rounded ends, when a worker connects two longitudinal shield segments, the cylinder A1 and the cylinder B2 of the device can be inserted into holes on the flat surfaces of the cylinder A1 and the cylinder B2 in advance, the worker can use an external tool to beat the right wall of the cylinder A1 or beat the left wall of the cylinder B2 to respectively help the cylinder A1 and the cylinder B2 to be inserted into the holes in the inserting process, after the cylinder A1 and the cylinder B2 are completely inserted into the holes, strong extrusion force can be generated on the inner walls of the holes under the elastic effect of a compression spring A5 in the cavity 4 inside the round pad 3, so that the connecting strength between the cylinder A1 and the cylinder B2 and the shield segments can be improved by increasing the friction force between the cylinder A893 and the inner walls of the holes, the longitudinal connection between the two shield segments through the device can be facilitated, after the cylinder A1 and the cylinder B2 are installed, the staff alright utilize outside to lift by crane the equipment and connect two vertical shield constructs the section of jurisdiction, can correspond the post 6 position of inserting in the middle part of the right wall of drum A1 with slot 7, then insert post 6 and just can insert inside slot 7 and go deep into in the inner chamber 15.

Further, cardboard 10 lateral wall is ARC structure, cardboard 10 and 11 joint cooperations of board groove, and inner wall edge is the fillet structure about the 12 through openings to this can be to inserting post 6 production restriction, avoids it to take place to rotate.

Furthermore, the extension rod 17 is in sliding fit with the inside of the base rod 16, the top block 20 is of a hemispherical structure, the left wall of the top block 20 is in extrusion fit with the right ends of the upper inner wall and the lower inner wall of the through hole 12, the circular groove 22 is in insertion fit with the top block 20, the fixture block 19 is of a circular truncated cone structure with a small left and a large right, the fixture block 19 is in clamping fit with the clamping groove 21, the right end of the outer side wall of the guide block 13 is of an arc-shaped structure, the inner wall of the guide groove 14 is of an inclined plane structure which gradually deviates from left to right towards the inner side, the outer wall of the guide block 13 is in extrusion fit with the inner wall of the guide groove 14, when a worker installs the cylinder A1 and the cylinder B2, the worker needs to pay attention to accurately correspond the positions of the guide groove 14 and the guide block 13, the inner cavity 15 is of a cylindrical structure with a diameter larger than that of the slot 7, the top surface of the guide block 13 is in clearance fit with the top surface of the inner cavity 15, when the right end of the insert 6 enters the inner cavity 15, the top block 20 can push the fixture block 19 and the extension rod 17 to the right side, so that the right end of the extension rod 17 presses the compression spring C18 and retracts into the base rod 16, when most of the right end of the inserted column 6 enters the range of the inner cavity 15, the top block 20 can push the upper side and the lower side of the right end of the inserted column 6 to be opened along the through hole 12 under the elastic effect of the compression spring C18, the top block 20 and the fixture block 19 can be pushed into the circular groove 22 and the clamping groove 21, then the top block 20 and the fixture block 19 can be wrapped at the right end of the inserted column 6 under the toughness effect of the inserted column 6, meanwhile, the clamping plate 10 at the left end of the outer wall of the inserted column 6 can be clamped into the plate groove 11 to further limit the inserted column 6, and the inserted column 6 and the slot 7 cannot be pulled out after the two shield connection.

The length of the guide block 13 can be further reasonably designed, and the length of the guide block 13 is selected to meet the following rules: when the guide block 13 completely slides out of the guide groove 14, the extension rod 17 slides to the maximum stroke position in the base rod 16, the top block 20 pushes the through hole 12 to open towards the upper side and the lower side, so that the top block 20 and the fixture block 19 are pushed into the circular groove 22 and the clamping groove 21 in the process that the inserting column 6 is continuously inserted into the inserting groove 7, the sliding stroke of the inserting column 6 in the inserting groove 7 is shortened, and the efficiency of connection between two shield segment rings is improved.

It should be noted that the extrusion block 24 is made of rubber, the outer wall of the extrusion block 24 is in sliding contact with the inner wall of the through hole 23, the sliding block 25 is in sliding fit with the sliding groove 26, the inner end of the extrusion block 24 is in pressing fit with the left end of the outer wall of the insert post 6, when the cylinder B2 is installed, the extrusion block 24 slides towards the inside of the insert slot 7 along the direction of the sliding block 25 and the sliding groove 26, so as to avoid the extrusion block 24 from being broken due to the hard contact between the outer end of the extrusion block 24 and the shield segment during the insertion process of the cylinder B2, and then, when the insert post 6 is inserted into the insert slot 7, the end of the guide block 13 is inserted into the guide slot 14, and along with the tendency that the inner wall of the guide slot 14 gradually deviates towards the middle, the guide block 13 is also extruded by the guide slot 14 to press the inner side of the insert post 6 connected therewith, and the end of the insert post 6 inclines towards the through hole 12, so that a gap is generated between the outer wall of the right end of the insert post 6 and the inner wall of the insert slot 7, so extrusion piece 24 has the space of deformation, avoid hard contact to crowd absolutely extrusion piece 24, extrusion piece 24 of all the other positions is the fillet design because of link up 12 inner wall edges, so can not produce hard contact, insert the post 6 and insert the back completely, extrusion piece 24 just can take place deformation under the extrusion of inserting 6 left sides outer walls of post, owing to set up a plurality of annular 27 and the through groove 29 on round cavity 28 and the round cavity 28 inner wall on it, so the deformation volume that extrusion piece 24 can take place is great, so alright produce a mutual extruded power between post 6 and the shield structure section of jurisdiction hole inner wall, make post 6 and other shield structure section of jurisdiction that links to each other with its place shield structure section of jurisdiction produce and be connected.

The working principle is as follows: when a worker connects two longitudinal shield segments, the cylinder A1 and the cylinder B2 of the device can be inserted into holes on the flat surfaces of the cylinder A1 and the cylinder B2 respectively in advance, the worker can use an external tool to beat the right wall of the cylinder A1 or the left wall of the cylinder B2 to respectively help the cylinder A and the cylinder B2 to be inserted into the holes, after the cylinder A1 and the cylinder B2 are completely inserted into the holes, strong extrusion force can be generated on the inner wall of the holes under the elastic effect of the compression spring A5 in the inner cavity 4 of the round pad 3, so that the connection strength between the cylinder A1 and the cylinder B2 and the shield segments can be improved by increasing the friction force between the round pad 3 and the inner wall of the holes, the longitudinal connection of the two shield segments through the device is facilitated, after the cylinder A1 and the cylinder B2 are installed, the worker can use external hoisting equipment to connect the two longitudinal shield segments, and the position of an insert column 6 in the middle part of the right wall of the cylinder A1 can be corresponding to the slot 7, then the inserting column 6 is inserted into the slot 7 and extends into the inner cavity 15, when the right end of the inserting column 6 enters the inner cavity 15, due to the extrusion of the inserting column 6 to the top block 20, the top block 20 will squeeze the fixture block 19 and the extension rod 17 to the right side, so that the right end of the extension rod 17 presses the compression spring C18 and retracts into the base rod 16, when most of the right end of the inserting column 6 enters the range of the inner cavity 15, the top block 20 will squeeze the right end of the inserting column 6 along the upper and lower sides of the through hole 12 under the elastic force effect of the compression spring C18, the top block 20 and the fixture block 19 will squeeze into the circular groove 22 and the clamping groove 21, then the top block 20 and the fixture block 19 will be wrapped by the right end of the inserting column 6 under the toughness effect of the inserting column 6, meanwhile, the clamping plate 10 at the left end of the outer wall of the inserting column 6 will also be clamped into the plate groove 11 to further limit the inserting column 6, and the inserting column 6 can not be pulled out after the two shield segments are connected, in addition, when the worker installs the cylinder A1 and the cylinder B2, the worker needs to pay attention to the accurate position correspondence between the guide groove 14 and the guide block 13, when the cylinder B2 is installed, the extrusion block 24 slides towards the inside of the slot 7 along the direction of the sliding block 25 and the sliding groove 26, so that the situation that the outer end of the extrusion block 24 is in hard contact with the shield segment to cause the fracture of the extrusion block 24 in the insertion process of the cylinder B2 is avoided, then when the insert column 6 is inserted into the slot 7, the end of the guide block 13 is also inserted into the guide groove 14, and then under the tendency that the inner wall of the guide groove 14 gradually deviates to the middle part, the guide block 13 is also extruded by the guide groove 14 to be pressed towards the inner side of the insert column 6 connected with the guide groove 14, and the right end of the insert column 6 inclines towards the through hole 12, so insert the right-hand member outer wall of post 6 just can with slot 7 inner wall between produce the gap, so extrusion piece 24 just has the space of deformation, avoid hard contact to crowd absolutely extrusion piece 24, the extrusion piece 24 of all the other positions is the fillet design because of through 12 inner wall edges, so can not produce hard contact, after inserting post 6 inserts completely, extrusion piece 24 just can be out of shape under the extrusion of inserting post 6 left side outer wall, owing to set up a plurality of annular 27 and round chamber 28 and pass through groove 29 on the round chamber 28 inner wall on it, the deformation volume that extrusion piece 24 can take place is great, so alright produce a mutual extrusion power between inserting post 6 and shield structure section of jurisdiction hole inner wall, make inserting post 6 and the shield structure section of jurisdiction that rather than the shield structure section of jurisdiction continuous another shield structure section of jurisdiction produce and be connected, the fastness of two shield structures section of jurisdiction has improved more, therefore, the clothes hanger is strong in practicability.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.