CN217080486U - Template system of shield small-radius tunnel needle beam type full-circle lining trolley - Google Patents
Template system of shield small-radius tunnel needle beam type full-circle lining trolley Download PDFInfo
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- CN217080486U CN217080486U CN202121296422.XU CN202121296422U CN217080486U CN 217080486 U CN217080486 U CN 217080486U CN 202121296422 U CN202121296422 U CN 202121296422U CN 217080486 U CN217080486 U CN 217080486U
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Abstract
The utility model provides a template system of a shield small-radius tunnel needle beam type full-circle lining trolley, which belongs to the technical field of shield construction, and comprises two end templates and n middle templates arranged between the end templates, wherein n =0, 1, 2, 3 … …, and the templates are all round; the end face of the end template is vertical to the axis of the tunnel, and the connecting face connected with the adjacent template is obliquely crossed with the axis of the tunnel; the connecting surfaces at the two ends of the middle template are obliquely crossed with the axis of the tunnel, and the connecting surfaces at the two ends are symmetrically arranged. The utility model discloses can change between tunnel straightway and curve section, need not to reduce concreting length once, also need not to install additional and demolish wedge template.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs the construction, specifically disclose a shield constructs template system of full circle lining cutting platform truck of small radius tunnel needle beam formula.
Background
In recent years, along with city expansion, diversion and water delivery tunnels are gradually increased, compared with urban subway shield tunnels, the diversion and water delivery shield tunnels have small sections and small turning radii, and secondary lining concrete needs to be poured on the basis of shield segments.
The diversion and water delivery shield tunnel is circular in shape, and a circular needle beam type lining trolley is needed to be adopted for lining construction, so that the integrity of lining concrete can be ensured. The longitudinal axis of the existing needle beam type lining trolley is linear, and the lining trolley cannot be well matched with a curve section when the curve section is constructed, so that in the curve section, a method of reducing the length of concrete poured into the lining trolley at one time is adopted to prevent the lining thickness from meeting the design requirement, or a method of disassembling a needle beam, dividing the needle beam into 2 trolleys and installing a wedge plate to adapt to the curve section is adopted.
The conventional straight line type pin beam type lining trolley has the following disadvantages:
1. when the curve section is constructed, in order to ensure the lining thickness, the one-time lining length cannot be too long, the number of lining concrete sections is large, the number of construction joints is large, and the quality risk is large;
2. erecting the template and constructing a large amount of waterproof engineering;
3. the lining times are many, the progress is slow, and the labor cost and the equipment cost are high;
4. because the lining concrete has more sections, the construction interference is large, and the organization is difficult.
The traditional stitch-removing type lining trolley for installing the wedge-shaped plate has the following defects:
1. the step of disassembling and installing the wedge-shaped plate of the needle beam is complex, the accuracy of the lining trolley is influenced by repeated disassembly and assembly, and the trolley parts are easy to be locally formed, so that the service life is influenced;
2. the time for installing and dismantling the wedge-shaped template is long, the construction progress is influenced, and the labor cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a shield constructs mould system soon of full circle lining cutting platform truck of small radius tunnel needle beam formula can change between tunnel straightway and curve section, need not to reduce once concreting length, also need not to install additional and demolish wedge template.
In order to achieve the purpose, the utility model provides a template system of a shield small-radius tunnel needle beam type full-circle lining trolley, which comprises two end templates and n middle templates arranged between the end templates, wherein n is 0, 1, 2, 3 … …, and the templates are all round;
the end face of the end template is vertical to the axis of the tunnel, and the connecting face connected with the adjacent template is obliquely crossed with the axis of the tunnel;
the calculation formula of the axial longest side length of the end template is
The shortest side length is calculated by the formula
In the formula: l 1 The center length of an end template, R is a line turning radius, and R is a template radius, namely a tunnel hole diameter;
the connecting surfaces at two ends of the middle template are obliquely crossed with the axis of the tunnel, and the connecting surfaces at two ends are symmetrically arranged;
the calculation formula of the axial longest side length of the middle template is
The shortest side length is calculated by the formula
In the formula: l 2 Is the center length of the middle template, R is the turning radius of the line, and R is the template radius, i.e. the tunnel diameter.
Furthermore, the end template and the middle template comprise outer molds, rotary outer rings, rotary inner rings, outer ring longitudinal beams, inner and outer ring supports and demolding oil cylinders; the outer mold is formed by enclosing a plurality of arc-shaped templates; the two rotary outer rings are oppositely arranged and connected through a plurality of outer ring longitudinal beams; the rotating inner ring is positioned in the rotating outer ring and is connected with the rotating outer ring through a plurality of inner and outer ring supports; two ends of the demoulding oil cylinder are respectively hinged with the arc-shaped template and the outer ring longitudinal beam.
Further, the outer die comprises a top die, a bottom die and a side die for connecting the top die and the bottom die; the demoulding oil cylinder comprises a top mould demoulding oil cylinder, a bottom mould demoulding oil cylinder and a side mould demoulding oil cylinder.
Furthermore, stiffening ribs are longitudinally arranged on the inner walls of the top die, the bottom die and the side die; a template cross beam is arranged between the stiffening ribs of the top die and the bottom die; two ends of a top mold demolding oil cylinder are respectively hinged with a template cross beam of a top mold and an outer ring longitudinal beam positioned above the rotary inner ring; two ends of the bottom die demoulding oil cylinder are respectively hinged with a template cross beam of the bottom die and an outer ring longitudinal beam positioned below the rotary inner ring; two ends of the side die demoulding oil cylinder are respectively hinged with the stiffening ribs of the side die and the outer ring longitudinal beam positioned on the side surface of the rotary inner ring.
Furthermore, pumping ports are formed in the surrounding area of the stiffening ribs and the template cross beam in the top die and the bottom die.
Furthermore, in the top die and the bottom die, a balancing weight frame used for accommodating a balancing weight is further arranged on a surrounding and combining area of the stiffening rib and the template beam.
Furthermore, a pouring window capable of being opened inwards is arranged on the side die.
The utility model has the advantages of it is following:
1. the construction from the straight line section to the curve section does not need to disassemble and assemble the wedge-shaped plate, the interchange of the straight line section and the curve section can be completed only by rotating the template, and the operation is simple;
2. the length and the number of sections of the lining trolley can be set as required, and the lining trolley template is quickly adjusted to be in a broken line shape to adapt to the curve section;
3. the length of the liner at one time in the curve section can reach the length of the straight line section, so that the steps of erecting a head die, waterproofing the head and the like are reduced, and the workload is reduced;
4. need not dismouting wedge-shaped plate, reduced the construction interference of each process. And meanwhile, the construction progress can be increased.
Drawings
FIG. 1 is a schematic view of the installation of the formwork system of embodiment 1 on a shield small-radius tunnel needle beam type rotary formwork full circle lining trolley;
FIG. 2 is a view of the formwork system in a liner in the straight section;
FIG. 3 is a state diagram of the lining of the formwork system at a curved section;
FIG. 4 is a front view of FIG. 1;
FIG. 5 is a schematic view of the installation of the rotating inner and outer rings and the stripper cylinder;
FIG. 6 is a schematic structural view of an outer mold;
FIG. 7 is a position diagram of the counterweight frame of FIG. 6;
FIG. 8 is a schematic view of the installation of a pouring window;
FIG. 9 is a block diagram of a needle beam;
FIG. 10 is a schematic view of the installation of the needle beam longitudinal displacement device;
FIG. 11 is a schematic view of the installation of a rotating offset frame;
FIG. 12 is a schematic view of the inner and outer frames of FIG. 11 mounted;
FIG. 13 is an elevation view of the offset jack of the frame of FIG. 11;
FIG. 14 is a block diagram of the longitudinal slide offset carriage of FIG. 13;
fig. 15 is another directional view of fig. 11.
In the figure: 1-inner wall of tunnel segment;
2-needle beam and needle beam longitudinal moving system, 2.1-needle beam, 2.2.1-motor and gear, 2.2.2-steel wire rope, 2.2.3-rope buckle, 2.2.4-roller and gear, 2.2.5-rope clip, 2.2.6-pulley, 2.2.7-self-aligning bearing, 2.2.8-needle beam hinge lug, 2.3-transverse moving chute and 2.4-pulley hole;
3-needle beam front support and 4-needle beam rear support;
5-end template A, 5.1-outer mold, 5.1.1-top mold, 5.1.2-bottom mold, 5.1.3-side mold, 5.1.4-stiffening rib, 5.1.5-template beam, 5.1.6-pumping port, 5.1.7-counterweight frame, 5.1.8-pouring window, 5.1.9-window hinge, 5.2-rotating outer ring, 5.3-rotating inner ring, 5.4-outer ring longitudinal beam, 5.5-inner and outer ring support, 5.6-top mold stripping oil cylinder, 5.7-bottom mold stripping oil cylinder and 5.8-side mold oil cylinder;
6-middle template A, 7-middle template B and 8-end template B;
9-rotating offset frame A, 9.1-inner frame, 9.2-outer frame outer ring, 9.3-outer frame longitudinal beam, 9.4-inner and outer frame support, 9.5-flange, 9.6-frame offset jack, 9.7-longitudinal sliding offset trolley, 9.7.1-pulley, 9.7.2-bottom plate, 9.7.3-trolley hinge lug, 9.8-frame clutch oil cylinder, 9.9-outer tooth slewing bearing, 9.10-toothless slewing bearing, 9.11-variable frequency motor, 9.12-driving tooth, 9.13-motor support;
10-rotational offset frame B, 11-rotational offset frame C, 12-rotational offset frame D;
5-1 is the shortest side of the end template A, 5-2 is the longest side of the end template A, 6-1 is the shortest side of the middle template A, 6-2 is the longest side of the middle template A, 7-1 is the shortest side of the middle template B, 7-2 is the longest side of the middle template B, 8-1 is the shortest side of the end template B, and 8-2 is the longest side of the end template B.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The embodiment provides a template system of a shield small-radius tunnel needle beam type full-circle lining trolley, which comprises two end templates and n middle templates arranged between the end templates, wherein n is 0, 1, 2 and 3 … …, and the templates are all round; the end face of the end template is vertical to the axis of the tunnel, and the connecting face connected with the adjacent template is obliquely crossed with the axis of the tunnel;
the calculation formula of the axial longest side length of the end template is
The shortest side length is calculated by the formula
In the formula: l 1 Is the center length of the end form, RThe turning radius of the line is shown, and r is the radius of a template, namely the diameter of a tunnel;
the connecting surfaces at two ends of the middle template are obliquely crossed with the axis of the tunnel, and the connecting surfaces at two ends are symmetrically arranged;
the calculation formula of the axial longest side length of the middle template is
The shortest side length is calculated by the formula
In the formula: l 2 Is the center length of the middle template, R is the turning radius of the line, and R is the template radius, i.e. the tunnel diameter.
Furthermore, the end template and the middle template respectively comprise an outer die 5.1, a rotary outer ring 5.2, a rotary inner ring 5.3, an outer ring longitudinal beam 5.4, an inner ring support 5.5, an outer ring support 5.5 and a demoulding oil cylinder; the outer mold 5.1 is formed by enclosing a plurality of arc-shaped templates; the two rotary outer rings 5.2 are oppositely arranged and are connected through a plurality of outer ring longitudinal beams 5.4; the rotating inner ring 5.3 is positioned in the rotating outer ring 5.2 and is connected through a plurality of inner and outer ring supports 5.5; two ends of the demoulding oil cylinder are respectively hinged with the arc-shaped template and the outer ring longitudinal beam 5.4.
Further, the external mold 5.1 comprises a top mold 5.1.1, a bottom mold 5.1.2 and a side mold 5.1.3 connecting the top mold 5.1.1 and the bottom mold 5.1.2; stiffening ribs 5.1.4 are longitudinally arranged on the inner walls of the top die 5.1.1, the bottom die 5.1.2 and the side die 5.1.3; a template cross beam 5.1.5 is arranged between the stiffening ribs 5.1.4 of the top mold 5.1.1 and the bottom mold 5.1.2, and a pumping port 5.1.6 and a balancing weight block frame 5.1.7 for accommodating a balancing weight are arranged on a surrounding and synthesizing area of the stiffening ribs 5.1.4 and the template cross beam 5.1.5; because the template needs to rotate, the pouring window 5.1.8 can not be arranged in a traditional downward opening mode, therefore, the pouring window 5.1.8 which can be opened inwards is arranged on the side die 5.1.3, and the window hinge joint 5.1.9 is arranged on the left side or the right side; the demoulding oil cylinder comprises a top mould demoulding oil cylinder 5.6, a bottom mould demoulding oil cylinder 5.7 and a side mould demoulding oil cylinder 5.8; two ends of a top mould demoulding oil cylinder 5.6 are respectively hinged with a template beam 5.1.5 of the top mould 5.1.1 and an outer ring longitudinal beam 5.4 positioned above the rotary inner ring 5.3; two ends of a bottom die demoulding oil cylinder 5.7 are respectively hinged with a template beam 5.1.5 of a bottom die 5.1.2 and an outer ring longitudinal beam 5.4 positioned below a rotary inner ring 5.3; two ends of the side mould demoulding oil cylinder 5.8 are respectively hinged with the stiffening ribs 5.1.4 of the side mould 5.1.3 and the outer ring longitudinal beam 5.4 positioned on the side surface of the rotary inner ring 5.3.
During construction of a straight section, each template is rotated to enable the longest side and the shortest side of two adjacent templates to be in the same horizontal plane, and a plurality of templates form a straight tubular structure which is suitable for the straight section of the tunnel; when the curve section is constructed, each template is rotated to enable the longest edge of each template to be located on the outer ring of the curve section and the shortest edge to be located on the inner ring of the curve section, the longest edge and the longest edge of every two adjacent templates are located on the same horizontal plane, the shortest edge and the shortest edge are located on the same horizontal plane, and the multiple templates form a broken line cylindrical structure adaptive to the curve section of the tunnel.
Example 2
The formwork system described in embodiment 1 can be matched with the existing needle beam type full-circle lining trolley, the supporting frame outside the needle beam is rotatably connected with the rotating inner ring 5.3, and a rotating driving mechanism for driving each formwork to rotate is arranged. The applicant also made relevant studies on how to achieve rotation of the template.
The embodiment provides a needle beam type full-circle lining trolley for a shield small-radius tunnel, which comprises a needle beam and needle beam longitudinal moving system 2, a needle beam front support 3, a needle beam rear support 4 and a template system in the embodiment 1.
The needle beam and needle beam longitudinal moving system 2 comprises a needle beam 2.1 and a needle beam longitudinal moving device; the needle beam 2.1 is of a box-shaped hollow structure and made of steel, and two pulley holes 2.4 are longitudinally formed in the top plate; the needle beam longitudinal moving device comprises a steel wire rope 2.2.2, a steel wire rope retracting mechanism, a pulley 2.2.6, a self-aligning bearing 2.2.7 and a needle beam hinge lug 2.2.8; the needle beam hinge lugs 2.2.8 are arranged on two sides of the pulley hole 2.4 and are positioned in the needle beam 2.1; the wheel shaft of the pulley 2.2.6 is rotatably connected with the pin beam hinge lug 2.2.8 through the self-aligning bearing 2.2.7, the pulley 2.2.6 penetrates through the pulley hole 2.4, only a small part of the pulley 2.2.6 is exposed outside through the pulley hole 2.4 reserved in the pin beam 2.1, and therefore the pollution of foreign matters such as external construction concrete blocks, gravels and the like can be effectively avoided; the steel wire rope retracting mechanism is arranged in the needle beam 2.1; the steel wire rope 2.2.2 is wound on the steel wire rope retracting mechanism and bypasses the pulley 2.2.6, two ends of the steel wire rope penetrate through the pulley holes 2.4 and are positioned outside the needle beam 2.1, and the end part of the steel wire rope is provided with a rope buckle 2.2.3. The steel wire rope retracting mechanism comprises a motor, a driving gear connected with an output shaft of the motor, a roller rotatably arranged in the needle beam 2.1 and a driven gear connected with the roller; the middle part of the steel wire rope 2.2.2 is fixed on the roller through the rope clip 2.2.5, so that the steel wire rope 2.2.2 is prevented from slipping when being folded and unfolded.
The needle beam front support 3 and the needle beam rear support 4 are both supported at the bottom of the needle beam 2.1, near the front end and the rear end of the needle beam 2.1, respectively.
The plurality of rotary offset frames are sequentially sleeved on the needle beam 2.1, in this embodiment, the rotary offset frame a9, the rotary offset frame B10, the rotary offset frame C11 and the rotary offset frame D12 are sequentially arranged from back to front, and the structure of the rotary offset frame is described in detail by taking the rotary offset frame a9 as an example. Each rotary offset frame comprises an inner frame 9.1, an outer frame, an inner frame support 9.4, an outer frame support 9.4, a frame offset force application mechanism and a frame clutch mechanism; the inner frame 9.1 is a square frame, is sleeved outside the needle beam 2.1, has the inner height consistent with the outer height of the needle beam 2.1 and the inner width larger than the outer width of the needle beam 2.1 so as to form a certain angle with the needle beam 2.1 on a plane; the outer frame comprises two outer frame outer rings 9.2 which are oppositely arranged and outer frame longitudinal beams 9.3 which are connected with the two outer frame outer rings 9.2, the outer frame is sleeved outside the inner frame 9.1, the outer frame outer rings 9.2 and the inner frame 9.1 are connected through a plurality of inner and outer frame supports 9.4, and at least 1 outer frame longitudinal beam 9.3 is positioned on the left side or the right side of the needle beam 2.1 and used as a counter force point of the frame offset force application mechanism; the frame offset force application mechanism penetrates through a preformed hole of the inner frame 9.1, the outer end of the frame offset force application mechanism is fixedly connected with an outer frame longitudinal beam 9.3 positioned on the left side or the right side of the needle beam 2.1, the inner end of the frame offset force application mechanism is longitudinally and slidably connected with the corresponding side of the needle beam 2.1, transverse offset force is applied to the inner frame 9.1, the outer frame and the inner and outer frame supports 9.4, and the position is adjusted to enable the rotary offset frame to be in a central position, namely the starting point and the ending point of the central lines of the rotary offset frame and the template are positioned on the tunnel axis; the two groups of frame clutch mechanisms are respectively positioned at the left side and the right side of the inner frame 9.1, the first end of each frame clutch mechanism is hinged with the outer frame, the second end of each frame clutch mechanism is detachably hinged with the adjacent rotary offset frame, each module needs to be separated along the needle beam 2.1 through the frame clutch mechanisms before the template is rotated, and each module is closed along the needle beam 2.1 after the template is rotated to the position; each template is sleeved on a rotary offset frame and is rotationally connected with the outer frame of the rotary offset frame, and each template is driven to rotate independently through a corresponding rotary driving mechanism, and in the embodiment, an end template A5, an intermediate template A6, an intermediate template B7 and an end template B8 are sequentially arranged from back to front; at least 1 inner and outer frame support 9.4 in the rotary offset frame connected with the end template is positioned at the center position above the inner frame 9.1 and connected with a rope buckle 2.2.3.
In this embodiment, the offset frame structure associated with the end forms and the offset frame structure associated with the intermediate form are identical to simplify installation, i.e., at least 1 inner and outer frame support 9.4 is centrally located above the inner frame 9.1 on each offset frame.
Furthermore, a transverse sliding chute 2.3 is longitudinally arranged on the left side or the right side of the needle beam 2.1, and an outer frame longitudinal beam 9.3 positioned on the side of the transverse sliding chute 2.3 is aligned with the transverse sliding chute 2.3; the frame offset force application mechanism comprises a frame offset jack 9.6 and a longitudinal sliding offset trolley 9.7; the longitudinal sliding deviation trolley 9.7 comprises a pulley 9.7.1, a bottom plate 9.7.2 and a trolley hinge lug 9.7.3, wherein the pulley 9.7.1 and the trolley hinge lug 9.7.3 are respectively arranged at two sides of the bottom plate 9.7.2, and the pulley 9.7.1 is in sliding fit with the transverse sliding chute 2.3; the outer end of the frame offset jack 9.6 is fixedly connected with an outer frame longitudinal beam 9.3 positioned outside the transverse sliding chute 2.3, and the inner end is hinged with a trolley hinge lug 9.7.3. When the rotary offset frame moves back and forth, the longitudinal sliding offset trolley 9.7 slides freely along with the rotary offset frame, and when the rotary offset frame 9 needs to be offset left and right, the longitudinal sliding offset trolley 9.7 is clamped on the inner wall of the transverse sliding chute 2.3 and serves as an acting point of the inner end of the frame offset jack 9.6.
Further, the traverse chute 2.3 is a concave type with a small outside and a large inside, and the pulley 9.7.1 can be blocked in the traverse chute 2.3 and cannot be transversely separated.
Furthermore, in each rotary offset frame, at least two inner and outer frame supports 9.4 are arranged at the left side and the right side of the inner frame 9.1; the frame clutch mechanism is a frame clutch oil cylinder 9.8, and the first end of the frame clutch oil cylinder 9.8 is hinged with the inner frame support 9.4 on the same side.
Further, the concrete mode of the template and the outer frame is that: the rotating offset frame further comprises an external toothed slew bearing 9.9 and a toothless slew bearing 9.10; the two outer frame outer rings 9.2 are respectively fixedly connected with the inner ring of the outer tooth slewing bearing 9.9 and the inner ring of the toothless slewing bearing 9.10 through flanges 9.5; the two rotating inner rings 5.3 are respectively and fixedly connected with the outer ring of the external tooth slewing bearing 9.9 and the outer ring of the toothless slewing bearing 9.10; the rotary driving mechanism comprises a variable frequency motor 9.11 and a driving tooth 9.12; the variable frequency motor 9.11 is fixed on the outer frame longitudinal beam 9.3 through a motor support 9.13, and an output shaft is connected with the driving teeth 9.12; the drive teeth 9.12 mesh with a gear ring on the outer ring of the external-tooth slewing bearing 9.9. The driving teeth 9.12 drive the outer ring of the external tooth slewing bearing 9.9 to rotate, and the template rotates along with the outer ring.
Finally, it should be noted that: based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the scope of the present invention, including but not limited to the following extended embodiments:
in the embodiment, the number of the templates is 4, the 4 templates are determined based on the factors such as the total weight of the trolley, the on-site concrete pouring capacity, the width of the conventional panel in the market and the like, and the number of the templates which are adopted is less than 4 or more than 4, which is the result obtained or obtained without creative labor by ordinary technicians in the field;
in each set of template in the embodiment, the full-circle template is divided into 4 blocks of bottom die, top die and 2 side dies, and the division into 4 blocks is convenient for demoulding or template positioning operation, under the condition that the tunnel hole diameter is larger, the full-circle template can be larger than 4 blocks, and the increase of other parts caused by the larger than 4 blocks is also a result obtained or obtained without creative labor by ordinary technicians in the field;
in the embodiment, the number of the frame clutch oil cylinders and the number of the frame offset jacks are both 2, and the adoption of more than 2 is also a result obtained without creative labor by ordinary technicians in the field;
in the embodiment, the template rotation adopts a motor and an external tooth slewing bearing, the template rotation function is achieved in other mechanical modes, the function of mutual conversion between a full-circle needle beam type trolley construction straight line section and a small-radius curve section is achieved through the template rotation function, and the result can be obtained by combining the embodiment with the conventional technology by the ordinary skilled person in the art;
the number and position of the pouring windows, the number and position of the top-bottom pump pipes, the position and number of the panel stiffeners and other functional components are all examples in the embodiment, and the change of the arrangement to form a new embodiment is also a result which is obtained or obtained without creative labor of the ordinary skilled person.
Claims (7)
1. A template system of a shield small-radius tunnel needle beam type full-circle lining trolley is characterized by comprising two end templates and n middle templates arranged between the end templates, wherein n is 0, 1, 2 and 3 … …, and the templates are all round;
the end face of the end template is vertical to the axis of the tunnel, and the connecting face connected with the adjacent template is obliquely crossed with the axis of the tunnel;
the calculation formula of the axial longest side length of the end template is
The shortest side length is calculated by the formula
In the formula: l 1 The center length of an end template, R is a line turning radius, and R is a template radius, namely a tunnel hole diameter;
the connecting surfaces at two ends of the middle template are obliquely crossed with the axis of the tunnel, and the connecting surfaces at two ends are symmetrically arranged;
the calculation formula of the axial longest side length of the middle template is
The shortest side length is calculated by the formula
In the formula: l 2 Is the center length of the middle template, R is the turning radius of the line, and R is the template radius, i.e. the tunnel diameter.
2. The template system of the needle beam type full-circle lining trolley for the shield small-radius tunnel according to claim 1, wherein the end template and the middle template comprise an outer mold, a rotary outer ring, a rotary inner ring, an outer ring longitudinal beam, an inner ring support and a demoulding oil cylinder;
the outer mold is formed by enclosing a plurality of arc-shaped templates;
the two rotary outer rings are oppositely arranged and connected through a plurality of outer ring longitudinal beams;
the rotating inner ring is positioned in the rotating outer ring and is connected with the rotating outer ring through a plurality of inner and outer ring supports;
two ends of the demoulding oil cylinder are respectively hinged with the arc-shaped template and the outer ring longitudinal beam.
3. The template system of the needle beam type full-circle lining trolley for the shield small-radius tunnel according to claim 2, wherein the external mold comprises a top mold, a bottom mold and a side mold for connecting the top mold and the bottom mold;
the demoulding oil cylinder comprises a top mould demoulding oil cylinder, a bottom mould demoulding oil cylinder and a side mould demoulding oil cylinder.
4. The template system of the shield small-radius tunnel needle beam type full-circle lining trolley according to claim 3, wherein stiffening ribs are longitudinally arranged on the inner walls of the top mold, the bottom mold and the side molds;
a template cross beam is arranged between the stiffening ribs of the top die and the bottom die;
two ends of a top mold demolding oil cylinder are respectively hinged with a template cross beam of a top mold and an outer ring longitudinal beam positioned above the rotary inner ring;
two ends of the bottom die demoulding oil cylinder are respectively hinged with a template cross beam of the bottom die and an outer ring longitudinal beam positioned below the rotary inner ring;
two ends of the side die demoulding oil cylinder are respectively hinged with the stiffening ribs of the side die and the outer ring longitudinal beam positioned on the side surface of the rotary inner ring.
5. The template system of the shield small-radius tunnel needle beam type full-circle lining trolley according to claim 4, wherein a pumping port is formed in a region surrounded by the stiffening ribs and the template beams in the top mold and the bottom mold.
6. The template system of the shield small-radius tunnel needle beam type full-circle lining trolley according to claim 5, wherein a balancing weight frame for accommodating a balancing weight is further arranged on a surrounding area of the stiffening rib and the template beam in the top mold and the bottom mold.
7. The template system of the shield small-radius tunnel needle beam type full-circle lining trolley according to claim 6, wherein a pouring window capable of being opened inwards is arranged on a side mold.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121296422.XU CN217080486U (en) | 2021-06-10 | 2021-06-10 | Template system of shield small-radius tunnel needle beam type full-circle lining trolley |
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| CN202121296422.XU CN217080486U (en) | 2021-06-10 | 2021-06-10 | Template system of shield small-radius tunnel needle beam type full-circle lining trolley |
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2021
- 2021-06-10 CN CN202121296422.XU patent/CN217080486U/en active Active
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