CN115450653A - Damper and shield tunnel - Google Patents
Damper and shield tunnel Download PDFInfo
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- CN115450653A CN115450653A CN202211073551.1A CN202211073551A CN115450653A CN 115450653 A CN115450653 A CN 115450653A CN 202211073551 A CN202211073551 A CN 202211073551A CN 115450653 A CN115450653 A CN 115450653A
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- 230000000670 limiting effect Effects 0.000 claims abstract description 90
- 238000009434 installation Methods 0.000 claims abstract description 51
- 238000013461 design Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- Vibration Dampers (AREA)
Abstract
The embodiment of the application provides a damper, which comprises a telescopic annular spring assembly, a cylinder body and an inner rod, wherein an installation cavity is arranged in the cylinder body, the annular spring assembly is arranged in the installation cavity, one side of the installation cavity along the telescopic direction is open, two ends of the installation cavity along the telescopic direction are respectively provided with a limiting surface used for being abutted against the annular spring assembly along the telescopic direction, and the cylinder body is of a split structure; interior pole is worn to locate in the installation cavity through the open position of installation cavity, and interior pole includes first spacing section, linkage segment and the spacing section of second, and the linkage segment is worn to locate in annular spring assembly along the direction that stretches out and draws back, and first spacing section and the spacing section of second all can be with annular spring assembly along the direction butt that stretches out and draws back. The attenuator that this application adopted, the barrel is split type structure, for dismantling the connection between each components of a whole that can function independently structure to in the overall assembly of attenuator, the experience that promotes the customer and use is felt.
Description
Technical Field
The application relates to the technical field of dampers, in particular to a damper and a shield tunnel.
Background
In the single-hole double-line large-diameter shield tunnel, the connection node of the intermediate wall and the duct piece is a weak link, so that the arrangement of a buffer device is considered to reduce the possibility of fatigue damage of the connection node caused by transverse wind load and vibration load caused by vehicle operation in the operation process.
Meanwhile, due to the space limitation in the shield tunnel, the buffer device needs to be convenient to assemble on the premise of meeting the requirement of large-load buffering.
Disclosure of Invention
In view of this, the embodiments of the present application are expected to provide a damper and a shield tunnel that can be assembled conveniently.
To achieve the above object, an embodiment of the present application provides a damper, including:
a retractable annular spring assembly;
the cylinder body is provided with an installation cavity, the annular spring assembly is arranged in the installation cavity, one side of the installation cavity along the extension direction is open, two ends of the installation cavity along the extension direction are respectively provided with a limiting surface used for abutting against the annular spring assembly along the extension direction, and the cylinder body is of a split structure;
interior pole, interior pole warp open position of installation cavity wears to locate in the installation cavity, interior pole includes first spacing section, linkage segment and the spacing section of second, the linkage segment is worn to locate along the direction of stretching out and drawing back in the annular spring subassembly, first spacing section with the spacing section of second all can with the annular spring subassembly is along the direction butt of stretching out and drawing back.
In some embodiments, the annular spring assembly is sandwiched between two of the retaining surfaces.
In some embodiments, the annular spring assembly is sandwiched between the first retaining section and the second retaining section.
In some embodiments, the barrel includes a first sub-barrel and a second sub-barrel, the first sub-barrel is connected with the second sub-barrel along the telescopic direction to jointly form the installation cavity, a first sliding cavity communicated with the installation cavity is arranged in the first sub-barrel, the first sliding cavity is located at one end of the installation cavity far away from the second sub-barrel, and one end of the installation cavity far away from the first sliding cavity is open, the first limiting section is arranged in the first sliding cavity in a penetrating manner, a second sliding cavity communicated with the installation cavity is arranged in the second sub-barrel, and the second limiting section is arranged in the second sliding cavity in a penetrating manner along the telescopic direction.
In some embodiments, the limiting surface includes a first limiting surface, and a projection of the first sliding cavity along the extending direction is smaller than a projection of the mounting cavity along the extending direction, so that an edge of a communication port of the first sliding cavity and the mounting cavity forms the first limiting surface.
In some embodiments, the limiting surface includes a second limiting surface, the mounting cavity is located in the first sub-cylinder, one end of the mounting cavity, which is far away from the first sliding cavity, is open to form an opening, the second sub-cylinder faces the first end surface of the first sub-cylinder and abuts against the edge of the opening, and the first end surface abuts against one end of the annular spring assembly along the extending direction to form the second limiting surface.
In some embodiments, the cylinder includes a third sub-cylinder extending along the telescopic direction and sleeved outside the first sub-cylinder, and one end of the third sub-cylinder along the telescopic direction is connected to the second sub-cylinder.
In some embodiments, the first end surface abuts the third sub-cylinder.
In some embodiments, the size of the second sliding cavity along the telescopic direction is larger than the size of the second limiting section along the telescopic direction.
In some embodiments, the annular spring assembly includes a plurality of layers of annular springs stacked in a telescopic direction, and two cushion blocks respectively disposed at one end of the plurality of layers of annular springs in the telescopic direction.
In another aspect of the embodiments of the present application, a shield tunnel includes:
an intermediate wall;
the lining segment is used for enhancing the stability of the shield tunnel, and a design gap exists between the lining segment and the intermediate wall;
the damper according to any one of the above claims, for connecting the intermediate wall and the lining segment.
In some embodiments, the shield tunnel further includes at least two mounting seats, two of the mounting seats are respectively disposed on the intermediate wall and the lining duct piece, one of the mounting seats is hinged to one end of the inner rod far away from the barrel, and the other mounting seat is hinged to one end of the barrel far away from the inner rod.
According to the damper provided by the embodiment of the application, on one hand, the annular spring assembly is arranged in the installation cavity, two ends of the annular spring assembly in the extension direction are respectively abutted against the limiting surfaces at two ends of the installation cavity in the extension direction, the connection section of the inner rod penetrates through the annular spring assembly in the extension direction, and the inner rod moves in the extension direction under the action of external force, so that the first limiting section or the second limiting section is abutted against the annular spring assembly, the annular spring assembly is compressed in the moving direction, and the external force impact is relieved by utilizing the deformation action of the annular spring assembly; on the other hand, the barrel is split type structure, for can dismantling the connection between each components of a whole that can function independently structure to the integral erection of attenuator promotes the experience sense that the customer used.
Drawings
Fig. 1 is a schematic overall cross-sectional structure diagram of a damper according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an annular spring assembly provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an inner rod according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a cartridge provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an outer ring according to an embodiment of the present disclosure;
FIG. 6 is a cross-sectional view of the outer ring of FIG. 5 in an axial direction;
fig. 7 is a schematic structural diagram of an inner circular ring according to an embodiment of the present disclosure;
FIG. 8 is a cross-sectional view of the inner collar of FIG. 7 taken in an axial direction;
fig. 9 is a schematic structural diagram of a mounting base provided in an embodiment of the present application at a viewing angle;
fig. 10 is a schematic structural diagram of a mounting base provided in an embodiment of the present application from another perspective;
fig. 11 is a schematic structural diagram of a shield tunnel provided in an embodiment of the present application.
Description of the reference numerals
A damper 1; a cylinder 11; a first sub-cylinder 110; the second sub-cylinder 111; a third sub-cylinder 112; a mounting cavity 11a; a first sliding chamber 11b; a second sliding chamber 11c; a first stopper surface 11d; a second stopper surface 11e; an inner rod 12; a first spacing segment 120; a connecting section 121; a second limiting section 122; an annular spring assembly 13; an outer ring 131; an inner conical surface 1311; an inner ring 132; an outer tapered surface 1321; a spacer 133; a mounting base 2; a connection end 21; an anchor rod 22; a connecting plate 23; an intermediate wall 3; a lining segment 4; the gap 5 is designed.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the description of the present application, the "telescopic direction" is based on the orientation or positional relationship shown in fig. 1, and it is to be understood that these orientation terms are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Referring to fig. 1, in one aspect of the embodiments of the present application, there is provided a damper 1, including: a telescoping annular spring assembly 13, a barrel 11 and an inner rod 12.
A mounting cavity 11a is formed in the cylinder body 11, the annular spring assembly 13 is arranged in the mounting cavity 11a, one side of the mounting cavity 11a in the extending direction is open, limiting surfaces used for being abutted against the annular spring assembly 13 in the extending direction are arranged at two ends of the mounting cavity 11a in the extending direction, and the cylinder body 11 is of a split structure; interior pole 12 wears to locate the installation cavity 11a through the open position of installation cavity 11a, and interior pole 12 includes first spacing section 120, linkage segment 121 and the spacing section 122 of second, and in annular spring assembly 13 was worn to locate along the direction of stretching out and drawing back to linkage segment 121, first spacing section 120 and the spacing section 122 of second all can with annular spring assembly 13 along the direction butt of stretching out and drawing back.
The damper 1 provided by the embodiment of the application, on the one hand, the first spacing section 120 and the second spacing section 122 are matched with the spacing surface, the annular spring assembly 13 can be compressed along the moving direction, and the deformation of the annular spring assembly 13 is utilized to relieve the external force impact. On the other hand, barrel 11 is split type structure, enclose to establish by each split type structure jointly and form installation cavity 11a, pack annular spring unit 13 into by the space that the split type structure of part barrel 11 formed in the back again with the split type structure completion assembly of remaining barrel 11, the purpose of putting annular spring unit 13 in installation cavity 11a is realized, therefore, the quality of the single spare part of barrel 11 has been alleviateed, be convenient for carry and assembly operation in the in-process of assembly attenuator 1, utilize the characteristics that barrel 11 is split type structure, on-the-spot dismouting can be realized, the experience that the applicable scene that has enlarged attenuator 1 promoted the customer and used is felt.
Referring to fig. 1, under the condition that the inner rod 12 and the cylinder 11 are subjected to a tensile acting force which tends to cause the inner rod and the cylinder to be away from each other, the second limiting section 122 abuts against one end of the annular spring assembly 13 close to the second limiting section 122, and meanwhile, one end of the annular spring assembly 13 away from the second limiting section 122 abuts against a limiting surface of one end of the mounting cavity 11a away from the second limiting section 122, so that the annular spring assembly 13 is clamped between the second limiting section 122 and the limiting surface of one end of the mounting cavity 11a away from the second limiting section 122 and is extruded by the two, and the annular spring assembly 13 is compressed and deformed along the extension direction to absorb the energy of the tensile acting force; under the condition that interior pole 12 and barrel 11 receive the extrusion effort that makes both produce the trend of being close to each other, first spacing section 120 takes place the butt with the one end that annular spring subassembly 13 is close to first spacing section 120, simultaneously, the spacing face that first spacing section 120 one end was kept away from to one end that annular spring subassembly 13 was kept away from and installation cavity 11a took place the butt so that annular spring subassembly 13 presss from both sides and locates between the spacing face that first spacing section 120 and installation cavity 11a kept away from the one end of first spacing section 120, and receive extrusion between them, thereby make annular spring subassembly 13 take place compression deformation along the direction of stretching out and drawing back, with the energy of absorption compression effort. This allows the damper 1 to absorb energy of the tensile acting force and the compression acting force, thereby performing a cushioning function.
In some embodiments, referring to fig. 1, a projection of the installation cavity 11a in the extending direction is equal to a projection of the annular spring assembly 13 in the extending direction, so that an inner wall of the cylinder 11 corresponding to the installation cavity 11a abuts against an outer surface of the annular spring assembly 13, and when the inner rod 12 is subjected to an external force to deform the annular spring assembly 13 in the extending direction, the annular spring assembly 13 is prevented from deforming in a radially expanding manner.
In some embodiments, referring to FIG. 1, the annular spring assembly 13 is sandwiched between two retaining surfaces. The two ends of the annular spring assembly 13 in the extending direction are respectively abutted against the two limiting surfaces, so that pretightening force can be applied to the annular spring assembly 13, and the annular spring assembly 13 is in a compression state. Therefore, after the damping part is stressed in the stretching direction, the acting force can be directly transmitted to the annular spring assembly 13 through the limiting surface, the annular spring assembly 13 can play a buffering role in real time, the gap between the limiting surface and the annular spring assembly 13 is avoided, and after the damping part is stressed in the stretching direction, the annular spring assembly 13 collides with the limiting surface to generate abnormal sound and cause damage.
In some embodiments, referring to fig. 1, the annular spring assembly 13 is sandwiched between a first retaining segment 120 and a second retaining segment 122. That is, the one end that annular spring assembly 13 is close to first spacing section 120 along the direction of stretching and contracting butts with first spacing section 120, can exert the pretightning force for annular spring assembly 13, makes annular spring assembly 13 be in the compression state one end and the spacing section 122 butt of second that annular spring assembly 13 is close to spacing section 122 of second along the direction of stretching and contracting. Therefore, after the damping member is stressed in the extending direction, the acting force can be directly transmitted to the annular spring assembly 13 through the first limiting section 120 or the second limiting section 122, and the annular spring assembly 13 can play a role in buffering in real time, so that a gap between the first limiting section 120 and the annular spring assembly 13 or a gap between the second limiting section 122 and the annular spring assembly 13 is avoided, and after the damping member is stressed in the extending direction, the annular spring assembly 13 collides with the first limiting section 120 or the annular spring assembly 13 and the second limiting section 122 to generate abnormal sound and damage.
The first limiting section 120 or the second limiting section 122 can directly conduct stress to the annular spring assembly 13, impact on the joint of the first limiting section 120 or the second limiting section 122 and the annular spring assembly 13 is avoided, stress can be transmitted more stably, loss between components is reduced, and the service life of the components is prolonged.
In some embodiments, referring to fig. 1, the cylinder 11 includes a first sub-cylinder 110 and a second sub-cylinder 111, the first sub-cylinder 110 is connected to the second sub-cylinder 111 along the extending direction to form an installation cavity 11a together, a first sliding cavity 11b communicated with the installation cavity 11a is disposed in the first sub-cylinder 110, the first sliding cavity 11b is located at one end of the installation cavity 11a far away from the second sub-cylinder 111, and one end of the first sliding cavity 11b far away from the installation cavity 11a is open, the first limiting section 120 is disposed in the first sliding cavity 11b, a second sliding cavity 11c communicated with the installation cavity 11a is disposed in the second sub-cylinder 111, and the second limiting section 122 is disposed in the second sliding cavity 11c along the extending direction.
It can be understood that, first spacing section 120 wears to locate first chamber 11b that slides, and first chamber 11b that slides extends along the direction of stretching, can play direction and limiting displacement to the removal of first spacing section 120, and when first spacing section 120 received the exogenic action, first chamber 11b that slides can make first spacing section 120 only remove along the direction of stretching, and the swing of restriction first spacing section 120 to other directions to conduct the effort that it received to annular spring assembly 13 along the direction of stretching better. The second limiting section 122 penetrates through the second sliding cavity 11c along the telescopic direction, the second sliding cavity 11c extends along the telescopic direction, guiding and limiting effects can be achieved on the movement of the second limiting section 122, the second sliding cavity 11c can enable the second limiting section 122 to move only along the telescopic direction, the second limiting section 122 is limited to swing towards other directions, and therefore the force applied to the second limiting section 122 is better transmitted to the annular spring assembly 13 along the telescopic direction.
It should be noted that the specific connection manner of the first sub-cylinder 110 and the second sub-cylinder 111 is not limited. In some embodiments, the first sub-cylinder 110 and the second sub-cylinder 111 are detachably connected after being installed to a predetermined position, for example: bolted, hinged, etc.; in other embodiments, the first sub-cylinder 110 and the second sub-cylinder 111 are fixedly connected after being installed to the predetermined position, for example: welding, bonding, etc.
The specific forming mode of the limiting surface is not limited.
In some embodiments, referring to fig. 1, the limiting surface includes a first limiting surface 11d, and a projection of the first sliding cavity 11b along the extending direction is smaller than a projection of the mounting cavity 11a along the extending direction, so that the first limiting surface 11d is formed at an edge of a communication opening between the first sliding cavity 11b and the mounting cavity 11 a. On one hand, the first limiting surface 11d abuts against one end, close to the first sliding cavity 11b, of the annular spring assembly 13, and can be matched with the second limiting section 122 to limit the movement of the annular spring assembly 13 along the extending and contracting direction; on the other hand, the first limiting surface 11d is a part of the inner wall of the mounting cavity 11a, and a structure used for being abutted against the annular spring assembly 13 does not need to be additionally arranged in the mounting cavity 11a, so that the processing steps can be simplified, and the cost is saved.
In some embodiments, referring to fig. 1, the limiting surface includes a second limiting surface 11e, the mounting cavity 11a is located in the first sub-cylinder 110, an end of the mounting cavity 11a away from the first sliding cavity 11b is open to form an opening, a first end surface of the second sub-cylinder 111 facing the first sub-cylinder 110 abuts against an edge of the opening, and the first end surface abuts against an end of the annular spring assembly 13 along the extending direction to form the second limiting surface 11e. On one hand, the second limiting surface 11e abuts against one end, close to the second sliding cavity 11c, of the annular spring assembly 13, and can cooperate with the first limiting section 120 to limit the movement of the annular spring assembly 13 along the extending and contracting direction; on the other hand, the second limiting surface 11e is a part of the outer surface of the second sub-cylinder 111, and a structure abutting against the annular spring assembly 13 does not need to be additionally arranged, so that the processing steps can be simplified, and the cost is saved.
In some embodiments, referring to fig. 1 and 4, the barrel 11 includes a third sub-barrel 112, the third sub-barrel 112 extends along the extending and contracting direction and is sleeved outside the first sub-barrel 110, and one end of the third sub-barrel 112 along the extending and contracting direction is connected to the second sub-barrel 111. That is to say, the third sub-cylinder 112 extends along the extending direction, and one end of the third sub-cylinder 112 along the extending direction is connected with the second sub-cylinder 111, so as to guide the connection between the first sub-cylinder 110 and the second sub-cylinder 111, and facilitate the second limiting section 122 to enter the second sliding cavity 11 c. Meanwhile, the third sub-cylinder 112 is sleeved outside the first sub-cylinder 110, so that the connection position of the first sub-cylinder 110 and the second sub-cylinder 111 can be protected.
It should be noted that the specific connection manner of the second sub-cylinder 111 and the third sub-cylinder 112 is not limited. In some embodiments, the second sub-cylinder 111 and the third sub-cylinder 112 are detachably connected, such as: bolted, hinged, etc.; in other embodiments, the second sub-cylinder 111 and the third sub-cylinder 112 are fixedly connected, such as: welding, bonding, etc.
In some embodiments, referring to fig. 1, the first end surface abuts the third sub-cylinder 112. The uncovered edge and the first terminal surface butt of installation cavity 11a, the uncovered one end that third sub-barrel 112 is close to installation cavity 11a also with first terminal surface butt, consequently, when carrying out production and processing to barrel 11, only need handle first terminal surface, so that first sub-barrel 110 and third sub-barrel 112 along the same one end homoenergetic of the direction that stretches out and draws back can with the first terminal surface looks adaptation of second sub-barrel 111, so, can simplify and make the detection flow, practice thrift the cost.
In some embodiments, referring to fig. 1, the inner diameter of the third sub-cylinder 112 is equal to the outer diameter of the first sub-cylinder 110. That is to say, the first sub-cylinder 110 is sleeved in the third sub-cylinder 112, the inner wall of the third sub-cylinder 112 is completely attached to the outer surface of the first sub-cylinder 110, and meanwhile, the mutually attached portions of the third sub-cylinder 112 and the first sub-cylinder 110 are connected to each other, so that the connection position between the first sub-cylinder 110 and the second sub-cylinder 111 can be protected.
The specific connection manner of the first sub-cylinder 110 and the third sub-cylinder 112 is not limited. In some embodiments, the first sub-cylinder 110 and the third sub-cylinder 112 are detachably connected, such as: bolted, hinged, etc.; in other embodiments, the first sub-cylinder 110 and the third sub-cylinder 112 are fixedly connected, such as: welding, bonding, etc.
In some embodiments, referring to fig. 1, the size of the second sliding chamber 11c in the extending direction is greater than the size of the second limiting section 122 in the extending direction, so that the second limiting section 122 has a displacement space moving in the extending direction in the second sliding chamber 11c, and after the first limiting section 120 contacts the annular spring assembly 13, the first limiting section can continue to move toward the second sub-cylinder 111 in the extending direction, so as to achieve the purpose of compressing the annular spring assembly 13 together with the limiting surface.
In some embodiments, referring to fig. 2, 5 and 7, the ring spring assembly 13 includes a plurality of layers of ring springs and two spacers 133, each layer of ring springs includes an outer ring 131 having an inner conical surface 1311 and an inner ring 132 having an outer conical surface 1321, the outer ring 131 is coaxially disposed with the inner ring 132, the outer ring 131 is located radially outside the inner ring 132, the outer ring 131 is overlapped with the inner ring 132 along the extension direction, the inner conical surface 1311 abuts against the outer conical surface 1321, and the two spacers 133 are respectively disposed at one end of the plurality of layers of ring springs along the extension direction. That is to say, the projection of cushion 133 along the flexible direction is not less than the projection of multilayer annular spring along flexible direction, and the cushion 133 that is close to first chamber 11b that slides can take place the butt with first spacing face 11d and first spacing section 120, the cushion 133 that keeps away from first chamber 11b that slides can take place the butt with spacing face 11e of second and spacing section 122 of second, so, can increase annular spring subassembly 13 respectively with spacing face, the area of contact of first spacing section 120 and the spacing section 122 of second, avoid the direct atress of multilayer annular spring, thereby played the guard action to multilayer annular spring.
It should be noted that in the specific arrangement of the multi-layer ring spring, one layer of the ring spring includes an inner ring 132 and an outer ring 131 which are stacked on each other.
In some embodiments, referring to fig. 1, the two limiting surfaces are respectively abutted to the pads 133 at the two ends of the annular spring assembly 13 in the extending direction, and the first limiting section 120 and the second limiting surface 11e are respectively abutted to the pads 133 at the two ends of the annular spring assembly 13 in the extending direction, so that after the damping member is stressed in the extending direction, the acting force can be directly transmitted to the annular spring assembly 13 through the first limiting section 120 or the second limiting section 122 of the inner rod 12, and the annular spring assembly 13 can perform a buffering function in real time. So, multilayer annular spring receives the compression effort all the time and takes place to warp when interior pole 12 takes place reciprocating motion along the direction of stretching, and wherein, outer ring 131 takes place radial expansion's deformation, and inner ring 132 then can take place radial compression, and the friction power consumption takes place for the alternate movement between the two, so can alleviate external force and strike.
It will be appreciated that the number of layers of the annular spring can be adapted to achieve the best cushioning capacity according to the actual load capacity requirements.
In some embodiments, referring to fig. 1, 6 and 8, the inner tapered surface 1311 of the outer annular ring 131 and the outer tapered surface 1321 of the inner annular ring 132 abut each other. After the damper 1 is stressed in the extension direction, the acting force is transmitted to the annular spring assembly 13, between the outer ring 131 and the inner ring 132, the inclined plane of the inner conical surface 1311 and the inclined plane of the outer conical surface 1321 are abutted, so that part of the acting force in the extension direction can be converted into the acting force perpendicular to the extension direction, and therefore the outer ring 131 deforms in a radial expansion manner, the inner ring 132 can be radially compressed, and energy is absorbed through the deformation of the inner ring 132 and the outer ring 132 to relieve external force impact.
The specific connection manner between the second position-limiting section 122 and the connecting section 121 is not limited. In some embodiments, referring to fig. 1 and 3, the second limiting section 122 is detachably connected to the connecting section 121, the second limiting section 122 is a nut, a thread is disposed at one end of the connecting section 121 far away from the first limiting section 120, and the second limiting section 122 is in threaded connection with one end of the connecting section 121 far away from the first sliding cavity 11b, so that the connecting section 121 is conveniently inserted into the annular spring assembly 13 and then the second limiting section 122 is installed.
In the related art, referring to fig. 11, a single-tunnel double-line large-diameter shield tunnel usually uses an intermediate wall 3 as a partition member for left and right double tunnels, and adopts a prefabricated intermediate wall 3 to perform internal structure construction, in the construction process, by reducing the height of the prefabricated intermediate wall 3, the phenomenon of poor assembling effect of the intermediate wall 3 caused by construction errors is avoided, a design gap 5 is reserved between the top of the intermediate wall 3 and the inner arc surface of a shield tunnel lining segment 4, so that collision between the prefabricated intermediate wall 3 and other parts of the shield tunnel in the assembling process is avoided, and the assembling difficulty is reduced. However, the designed gap 5 between the top of the intermediate wall 3 and the inner arc surface of the shield tunnel lining segment 4 may cause node fatigue damage due to lateral wind load and vibration load caused by vehicle operation in the operation process, and in addition, the large-diameter shield tunnel may experience adverse stress conditions such as top overload and peripheral unloading in the operation process, which may cause local damage of the lining segment 4.
In still another aspect of the embodiments of the present application, there is provided a shield tunnel including an intermediate wall 3, a lining segment 4, and the damper 1 of the foregoing embodiments. The lining segment 4 is used for enhancing the stability of the shield tunnel, and a design gap 5 is formed between the lining segment 4 and the intermediate wall 3; the damper 1 is used to connect the intermediate wall 3 and the lining segment 4.
It will be appreciated that one of the intermediate wall 3 and the lining segment 4 is connected to the end of the inner rod 12 remote from the barrel 11 and the other is connected to the end of the barrel 11 remote from the inner rod 12. In the shield tunnel operation process, the damper 1 plays a role of buffering a lateral wind load and a vibration load applied to the intermediate wall 3 and the lining segment 4 caused by the operation of the vehicle, thereby protecting the intermediate wall 3 and the lining segment 4.
It is understood that the damper 1 may be directly or indirectly connected to the intermediate wall and the lining segment.
It should be noted that the specific number of dampers 1 installed between the intermediate wall 3 and the lining segment 4 is not limited.
In some embodiments, referring to fig. 11, the shield tunnel includes at least two installation seats 2, two installation seats 2 are respectively disposed on the intermediate wall 3 and the lining segment 4, one installation seat 2 is hinged to an end of the inner rod 12 away from the cylinder 11, and the other installation seat 2 is hinged to an end of the cylinder 11 away from the inner rod 12, so that the damper 1 is respectively connected to the intermediate wall 3 and the lining segment 4.
The specific form of the mount 2 is not limited. In some embodiments, referring to fig. 9 and 10, the mount 2 includes a connecting plate 23, an anchor rod 22, and a connecting end 21, the anchor rod 22 being disposed on a side of the connecting plate 23, and the connecting end 21 being disposed on a side of the connecting plate 23 facing away from the anchor rod 22. The anchor rods 22 are fixed in the intermediate wall 3 or the lining segment 4 to realize the fixation of the mounting seat 2, and the connecting ends 21 can be hinged to the damper 1 to enable the damper 1 to connect the intermediate wall 3 and the lining segment 4 respectively, and can utilize the damper 1 to buffer the transverse wind load and the vibration load applied to the intermediate wall 3 and the lining segment 4 in the vehicle running process to protect the intermediate wall 3 and the lining segment 4.
By adopting the hinge joint, the damper 1 can adapt to the direction applied by the load, so that the load is transmitted along the telescopic direction of the damper, and the damage probability of the damper caused by the bending moment and the shearing acting force is reduced.
Specifically, the connecting end 21 is provided with a first mounting hole, the end of the inner rod 12 away from the cylinder 11 and the end of the cylinder 11 away from the inner rod 12 are both provided with a second mounting hole extending in the direction perpendicular to the stretching direction, and the pin shaft penetrates through the first mounting hole and the second mounting hole to realize the hinging between the damper 1 and the mounting seat 2.
The various embodiments/implementations provided herein may be combined with each other without contradiction. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A damper, comprising:
a retractable annular spring assembly;
the cylinder body is provided with an installation cavity, the annular spring assembly is arranged in the installation cavity, one side of the installation cavity in the extension direction is open, two ends of the installation cavity in the extension direction are respectively provided with a limiting surface used for being abutted against the annular spring assembly in the extension direction, and the cylinder body is of a split structure;
the inner rod penetrates through the opening position of the installation cavity and is arranged in the installation cavity, the inner rod comprises a first limiting section, a connecting section and a second limiting section, the connecting section penetrates through the annular spring assembly along the stretching direction, and the first limiting section and the second limiting section can be abutted to the annular spring assembly along the stretching direction.
2. The damper of claim 1, wherein said annular spring assembly is sandwiched between two of said limiting surfaces; and/or the annular spring assembly is clamped between the first limiting section and the second limiting section.
3. The damper according to claim 1, wherein the cylinder comprises a first sub-cylinder and a second sub-cylinder, the first sub-cylinder is connected with the second sub-cylinder along a telescopic direction to jointly form the installation cavity, a first sliding cavity communicated with the installation cavity is arranged in the first sub-cylinder, the first sliding cavity is located at one end, away from the second sub-cylinder, of the installation cavity, and is open at one end, away from the installation cavity, of the first sliding cavity, the first limiting section penetrates through the first sliding cavity, a second sliding cavity communicated with the installation cavity is arranged in the second sub-cylinder, and the second limiting section penetrates through the second sliding cavity along a telescopic direction.
4. The damper according to claim 3, wherein the limit surface comprises a first limit surface, and a projection of the first sliding chamber in the telescopic direction is smaller than a projection of the mounting chamber in the telescopic direction, so that the first limit surface is formed by edges of a communication port of the first sliding chamber and the mounting chamber.
5. The damper according to claim 3, wherein the limiting surface comprises a second limiting surface, the installation cavity is located in the first sub-cylinder, one end of the installation cavity, which is far away from the first sliding cavity, is opened to form an opening, the first end surface of the second sub-cylinder, which faces the first sub-cylinder, is abutted against the edge of the opening, and the first end surface is abutted against one end of the annular spring assembly in the extending and contracting direction to form the second limiting surface.
6. The damper according to claim 5, wherein the cylinder comprises a third sub-cylinder, the third sub-cylinder extends along a telescopic direction and is sleeved outside the first sub-cylinder, and one end of the third sub-cylinder along the telescopic direction is connected with the second sub-cylinder.
7. The damper of claim 6, wherein the first end surface abuts the third sub-cylinder.
8. The damper of claim 3, wherein a dimension of the second displacement chamber in the telescoping direction is greater than a dimension of the second restraint section in the telescoping direction.
9. The damper according to claim 1, wherein the annular spring assembly includes a plurality of layers of annular springs stacked in the expanding and contracting direction and two spacers respectively provided at one end of the plurality of layers of annular springs in the expanding and contracting direction.
10. A shield tunnel, comprising:
an intermediate wall;
the lining segment is used for enhancing the stability of the shield tunnel, and a design gap exists between the lining segment and the intermediate wall;
the damper as claimed in any one of claims 1 to 9, which is used for connecting the intermediate wall and the lining segment.
11. The shield tunnel according to claim 10, further comprising at least two mounting seats, wherein the two mounting seats are respectively disposed on the intermediate wall and the lining duct piece, one of the mounting seats is hinged to one end of the inner rod away from the tube body, and the other mounting seat is hinged to one end of the tube body away from the inner rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211073551.1A CN115450653A (en) | 2022-09-02 | 2022-09-02 | Damper and shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211073551.1A CN115450653A (en) | 2022-09-02 | 2022-09-02 | Damper and shield tunnel |
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| Publication Number | Publication Date |
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| CN115450653A true CN115450653A (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211073551.1A Pending CN115450653A (en) | 2022-09-02 | 2022-09-02 | Damper and shield tunnel |
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| CN113047867A (en) * | 2021-03-24 | 2021-06-29 | 江苏建研建设工程质量安全鉴定有限公司 | Connecting structure for shield segments |
| CN113202200A (en) * | 2021-04-13 | 2021-08-03 | 东南大学 | Self-resetting viscous damper based on combined spring |
| CN113737977A (en) * | 2021-08-27 | 2021-12-03 | 广州大学 | Self-resetting multilayer circular ring spring friction damper |
| CN114809348A (en) * | 2022-05-19 | 2022-07-29 | 广州大学 | Large-tonnage self-resetting inertial volume damper suitable for recoverable functional structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185100A (en) * | 2013-03-15 | 2013-07-03 | 尹学军 | Pretightening force adjustable friction damper |
| CN103291797A (en) * | 2013-03-15 | 2013-09-11 | 尹学军 | Friction damper |
| CN113047867A (en) * | 2021-03-24 | 2021-06-29 | 江苏建研建设工程质量安全鉴定有限公司 | Connecting structure for shield segments |
| CN113202200A (en) * | 2021-04-13 | 2021-08-03 | 东南大学 | Self-resetting viscous damper based on combined spring |
| CN113737977A (en) * | 2021-08-27 | 2021-12-03 | 广州大学 | Self-resetting multilayer circular ring spring friction damper |
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