A tunnel secondary lining steel bar feeding system and construction method

Abstract

The present application relates to a tunnel secondary lining steel bar feeding system and construction method, the feeding system comprises: a steel bar pushing device, comprising a frame, a power device and a clamping device; the power device is mounted on the frame and used to push the steel bar; the clamping device comprises a rotating arm and a clamping wheel, the rotating arm is rotatably mounted on the frame, and the clamping wheel is rotatably mounted on the rotating arm; a curved feeding track is connected to the frame; the curved feeding track comprises a plurality of track sections; the plurality of track sections are sequentially connected end to end, so that a plurality of track grooves form a continuous curved feeding channel, the curved feeding channel extends from the power device to the top of the trolley and the extension track is curved; adjacent track sections are movably connected to form active nodes. The present invention can realize the bending and feeding of steel bars, reduces the number of construction personnel, can adapt to tunnel operations in different shapes and sizes, and has a wide range of applications.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel reinforcement construction, and in particular to a tunnel secondary lining reinforcement feeding system and a construction method. Background Art

[0002] In tunnel construction, secondary lining is an important part of the tunnel support system. During the construction process, circular steel bars, longitudinal steel bars, etc. need to be constructed to form a secondary lining steel bar structure before concrete pouring. The installation of circular steel bars requires bending the steel bars into a shape that matches the tunnel arch surface and tying them with the embedded steel bars. Due to the limited working environment in the tunnel, manual bending and loading are usually used for circular steel bar operations. Different construction workers stand on different working platforms of the trolley. The ground construction workers pass the steel bars to the construction workers on the working platform, and then pass them to the workers on the next construction platform in turn. During the steel bar transfer process, the construction workers not only have to overcome the gravity when loading the steel bars, but also need to bend the steel bars, which requires a lot of effort, making the bending and loading operations intensive, requiring a high number of people, and high costs. Summary of the invention

[0003] Based on this, it is necessary to provide a tunnel secondary lining steel bar feeding system and construction method, and its specific technical solution is as follows.

[0004] A tunnel secondary lining steel bar feeding system, comprising a trolley; and further comprising:

[0005] The steel bar pushing device comprises a frame, a power device and a pressing device; the frame is located at the side front of the end face of the trolley; the power device is installed on the frame and is used to push the steel bars; the pressing device comprises a rotating arm and a pressing wheel, the rotating arm is rotatably installed on the frame, the pressing wheel is rotatably installed on the rotating arm, and when the rotating arm rotates, the pressing wheel is driven to press the steel bars into the power device;

[0006] A curved loading track is connected to the frame; the curved loading track includes a plurality of track sections, each of which includes a track section body and a limiter; a track section body is provided with a track groove extending along its length direction, and the limiter is connected to the track section body and is located above the groove opening of the track groove; a plurality of track sections are connected end to end in sequence so that a plurality of track grooves form a continuous curved loading track, and the curved loading track extends from a power device toward the top of the trolley and the extension track is curved; adjacent track sections are movably connected to form active nodes, so that the shape of the extension track of the curved loading track changes after the adjacent track sections are deflected.

[0007] Specifically, the power device includes a motor and a rotating disk, the motor is installed on the frame; the rotating disk is connected to the rotating shaft of the motor, and an annular groove with the rotating shaft as the axis is provided on the circumference of the rotating disk, and a plurality of latching teeth arranged around the center of the rotating shaft are provided on the inner wall of the annular groove, and the latching teeth on the two inner walls of the annular groove correspond to each other one by one, and a first inclined surface is provided on the side of the latching teeth away from the inner wall, and the spacing between the first inclined surfaces of the two opposite latching teeth gradually increases in the direction away from the center of the rotating shaft.

[0008] Specifically, the clamping device also includes a driving member; the driving member includes a pressure rod, a first connecting rod and a spring; one side of the pressure rod is hinged to the rotating arm, and the other side is hinged to the first connecting rod, and the first connecting rod is hinged to the frame, so that when the pressure rod is moved down, the rotating arm is driven to rotate in the first direction; the spring is respectively connected to the frame and the first connecting rod, and the spring has an elastic force that drives the first connecting rod to rotate and causes the rotating arm to rotate in the second direction; when the rotating arm rotates in the first direction, the clamping wheel presses the steel bar into the power device, and the first direction is opposite to the second direction.

[0009] Specifically, the steel bar pushing device includes a primary power device and a secondary power device; the primary power device is located obliquely above the secondary power device, and an inclined transition track is provided between the primary power device and the secondary power device.

[0010] Specifically, the active node includes a first end plate arranged at one end of the track segment, a second end plate arranged at the other end of the track segment, and a first connecting bolt; a first arc-shaped hole is provided on the first end plate, and a first connecting hole is provided on the second end plate; the first connecting bolt passes through the first arc-shaped hole and the first connecting hole and locks the first end plates and the second end plates of the two adjacent track segments.

[0011] Specifically, the active node includes a first rotating sleeve arranged at one end of the track segment and a second rotating sleeve arranged at the other end of the track segment; the first rotating sleeve and the second rotating sleeve of two adjacent track segments are rotatably connected; the first rotating sleeve is provided with a first opening aligned with the track segment slot, and the second rotating sleeve is provided with a second opening aligned with the track segment slot.

[0012] Specifically, the first rotating sleeve is rotatably sleeved outside the second rotating sleeve; the track section is hinged to the first rotating sleeve, a first hinge ear is provided on the outside of the first rotating sleeve, a second hinge ear is provided at the bottom of the track section, and a telescopic part is connected between the first hinge ear and the second hinge ear.

[0013] Specifically, the first rotating sleeve includes a first arc plate and a first bent plate connected to the end face of the first arc plate, and a second arc hole is provided on the first bent plate; the second rotating sleeve includes a second arc plate and a second bent plate connected to the end plate of the second arc plate, and a third arc hole is provided on the second bent plate; the first arc plate is slidably sleeved outside the second arc plate, the second arc hole is aligned with the third arc hole, and the second connecting bolt passes through the second arc hole and the third arc hole to lock the first bent plate and the second bent plate.

[0014] Specifically, a steel bar ejection mechanism is provided on the curved feeding track; one end of the limiter and the side wall of the track section body form an ejection port for accommodating the ejection of the steel bar;

[0015] The steel bar ejection mechanism includes a mounting plate, a lifting cylinder, a connecting rod assembly and an ejection plate; the mounting plate is installed at the bottom of the track section, one end of the lifting cylinder is connected to the mounting plate, and the other end is hinged to the connecting rod assembly; a mounting ear is provided on the side of the track section opposite to the ejection outlet, and a through groove is provided on the track section, and the through groove extends from the side of the track section to the bottom; the ejection plate is hinged to the mounting ear and aligned with the through groove, and the connecting rod assembly is hinged to the ejection plate; the lifting cylinder drives the connecting rod assembly to move and drive the ejection plate to rotate, so that the end of the ejection plate moves along the outside of the track section to the groove of the track section.

[0016] A construction method using any of the above tunnel secondary lining steel bar feeding systems comprises the following steps:

[0017] Adjust the angles between adjacent track sections so that the curved feeding track forms an extended track that matches the tunnel shape;

[0018] The construction workers move the steel bars to the power device and drive the rotating arm to rotate so that the pressing wheel presses the steel bars into the power device;

[0019] Start the power device to push the steel bars toward the curved feeding track, so that the steel bars are bent according to the shape of the curved feeding track;

[0020] Multiple construction workers stand on different operating platforms of the trolley, pulling the steel bars pushed out from the steel bar bending feeding track, and push the steel bars with the help of the power device to move them to match the contour inside the tunnel;

[0021] Move some of the steel bars located in the curved feeding track to the outside.

[0022] Beneficial effects: The present invention provides a tunnel secondary lining steel bar feeding system and construction method, in which the steel bar pushing device pushes the steel bar into the curved feeding track, and under the cooperation of the steel bar pushing device, the steel bar is bent into a shape matching the curved feeding track, thereby realizing the steel bar feeding and bending operations, greatly reducing the work intensity of the construction personnel, and the steel bar can be transported to a certain height by the curved feeding track and then pulled by the construction personnel, reducing the requirements for the number of construction personnel and reducing costs. By changing the deflection angle between two adjacent track sections, the shape of the curved feeding track can be changed, so that it can adapt to tunnel operations in different shapes and sizes, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is the overall structural diagram of the feeding system;

[0025] Figure 2 This is a side view of the feeding system placed in the tunnel;

[0026] Figure 3 This is a front view of the feeding system placed in the tunnel;

[0027] Figure 4 It is a structural schematic diagram of a steel bar pushing device;

[0028] Figure 5 for Figure 4 A magnified schematic diagram of the middle A area;

[0029] Figure 6 It is a partial schematic diagram of the curved feeding track;

[0030] Figure 7 for Figure 6 A magnified schematic diagram of the middle B area;

[0031] Figure 8 is a structural schematic diagram of a first active node;

[0032] Fig. 9 is a front view schematic diagram of the second active node;

[0033] Fig.10 is an overall schematic diagram of the second active node;

[0034] Fig.11This is one of the schematic diagrams of the coordination between the steel bar ejection mechanism and the track section;

[0035] Fig.12 This is the second schematic diagram of the coordination between the rebar ejection mechanism and the track section.

[0036] Description of reference numerals: 1. trolley; 2. steel bar pushing device; 3. curved feeding track; 4. frame; 5. primary power device; 6. secondary power device; 7. clamping device; 8. steel bar ejecting mechanism;

[0037] 11. First-level construction platform; 12. Second-level construction platform; 13. Third-level construction platform; 14. Fourth-level construction platform; 15. Top construction platform.

[0038] 31. track node; 32. first activity node; 33. second activity node;

[0039] 311, bottom wall; 312, side wall; 313, stopper; 314, escape port;

[0040] 321, first end plate; 322, second end plate; 323, first arc-shaped hole;

[0041] 331, first rotating sleeve; 332, second rotating sleeve; 333, first hinge ear; 334, second hinge ear; 335, telescopic member; 336, first arc plate; 337, second arc plate; 338, second arc hole; 339, connecting plate;

[0042] 51. Motor; 52. Rotating plate; 53. Annular groove; 54. Gear; 55. First inclined surface; 56. Transition track;

[0043] 71. rotating arm; 72. clamping wheel; 73. pressure rod; 74. first connecting rod; 75. spring;

[0044] 81. Mounting plate; 82. Lifting cylinder; 83. Ejector plate; 84. Mounting ear; 85. Second connecting rod; 86. Third connecting rod; 87. Fourth connecting rod; 88. Long groove. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0051] Example 1

[0052] Reference Figures 1 to 3 As shown, this embodiment provides a tunnel secondary lining steel bar feeding system, including a trolley 1, a steel bar pushing device 2 and a curved feeding track 3. It should be noted that Figure 2 In order to better show the structure of the feeding system, part of the tunnel structure is hidden. The trolley 1 can adopt a conventional tunnel trolley structure, and multiple construction platforms are arranged on the circumference of the trolley 1. Figure 3 As shown, in this embodiment, the left and right sides of the trolley 1 are provided with a first-level construction platform 11, a second-level construction platform 12, a third-level construction platform 13 and a fourth-level construction platform 14 from bottom to top, and the top of the trolley 1 is provided with a top construction platform 15. In other embodiments, construction platforms with corresponding layers and heights can be designed according to the tunnel size and on-site construction needs.

[0053] Specifically, refer to Figure 4 As shown, the steel bar pushing device 2 includes a frame 4, a power device and a pressing device 7. The frame 4 and the trolley 1 are split structures. Figure 3 As shown, during the steel bar bending and feeding construction, the frame 4 is moved to the side front of the end face of the trolley 1, so that the frame 4 is placed on the ground in the tunnel and close to the inner wall of the tunnel. A roller structure is provided under the frame 4, which can move the frame 4 to different areas of the tunnel for operation. The power device is installed on the frame 4 and is used to push the steel bars. The clamping device 7 includes a rotating arm 71 and a clamping wheel 72. The rotating arm 71 is rotatably mounted on the frame 4, and the clamping wheel 72 is rotatably mounted on the rotating arm 71. During the steel bar pushing process, the steel bar passes between the clamping wheel 72 and the power device. When the rotating arm 71 is driven to rotate, the clamping wheel 72 is driven to press the steel bar into the power device, so that the power device can push the steel bar. On the contrary, when the rotating arm 71 is driven to rotate in another direction, the clamping wheel 72 no longer presses the steel bar into the power device. At this time, even if the power device is working, it can no longer push the steel bar. During the steel bar bending and feeding operation, since the steel bars need to be transferred between different construction platforms, the ground construction workers can quickly control the start and interruption of the steel bar transportation by controlling the clamping wheel 72 to press the steel bars into the power device, thereby reserving operation time for the construction workers and avoiding accidents.

[0054] Specifically, refer to Figure 6 As shown, the curved feeding track 3 is connected to the frame 4 and is located at the steel bar output end of the power device, and is used to receive the steel bars pushed out by the power device. The curved feeding track 3 includes a plurality of track sections 31, Figure 7 As shown, the track section 31 includes a track section 31 body and a stopper 313. A track groove extending along the length direction of the track section 31 body is provided in the track section 31 body. Specifically, the track section 31 body includes a bottom wall 311 and two oppositely arranged side walls 312, and the track groove is surrounded by the side walls 312 and the bottom wall 311. The track section 31 body can be made of an arc-shaped channel steel structure. The stopper 313 is connected to the track body and is located above the notch of the track groove. The steel bars are restricted by the stopper 313 to prevent the steel bars from falling out of the track groove during the pushing process. Multiple track sections 31 are connected end to end in sequence, so that multiple track grooves form a continuous curved feeding trough. The curved feeding trough extends from the power device to the top of the trolley 1 and the extension track is curved. The extension track is the track for limiting the bending of the steel bars. The adjacent track sections 31 are movably connected to form an active node. Adjusting the deflection angle between adjacent tracks can change the shape of the extension track of the curved feeding trough.

[0055] In actual construction, the shapes of tunnel cross-sections are various, such as circular, rectangular, horseshoe, and elliptical, etc., and their sizes are also different. The construction environment in the tunnel is complex and there are many interference structures. Therefore, in different tunnel construction, the angle between adjacent track sections 31 is adjusted before bending and feeding the steel bars, so that the shape of the bent feeding track 3 can be adjusted to adapt to the shape and size of the tunnel and the construction requirements on site.

[0056] It should be noted that, in this embodiment, the end of the curved feeding track 3 does not exceed the top construction platform 15 of the trolley 1, and the curved feeding track 3 is only located on one side of the trolley 1. Since the bending angle of the tunnel top is too large and the track groove width is relatively small, if the curved feeding track 3 is extended to the tunnel top, it is easy to get stuck during bending, which affects the bending and feeding of steel bars.

[0057] The present embodiment provides a tunnel secondary lining steel bar feeding system, in which the steel bar pushing device 2 pushes the steel bar into the curved feeding track 3, and under the cooperation of the pushing device 2, the steel bar is bent into a shape matching the curved feeding track 3, thereby realizing the steel bar feeding and bending operations, greatly reducing the work intensity of the construction personnel, and the steel bar can be transported to a certain height by the curved feeding track 3 and then pulled by the construction personnel, reducing the requirements on the number of construction personnel and reducing the cost. By changing the deflection angle between two adjacent track sections 31, the shape of the curved feeding track 3 can be changed, so that it can adapt to tunnel operations in different shapes and sizes, and has a wide range of applications.

[0058] Specifically, refer to Figure 5 As shown, the power device includes a motor 51 and a rotating disk 52. The motor 51 is mounted on the frame 4. The rotating disk 52 is connected to the rotating shaft of the motor 51, and is driven by the motor 51 to rotate. An annular groove 53 with the rotating shaft as the axis is provided on the circumference of the rotating disk 52. A plurality of latching teeth 54 arranged around the center of the rotating shaft are provided on the inner wall of the annular groove 53, and the latching teeth 54 protrude outward along the surface of the inner wall, and gaps are formed between adjacent latching teeth 54. The annular groove 53 has two opposite side walls 312, and each side wall 312 is respectively provided with a plurality of latching teeth 54, and the latching teeth 54 on the two side walls 312 correspond to each other one by one. A first inclined surface 55 is provided on the side of the latching teeth 54 away from the inner wall, and the spacing between the first inclined surfaces 55 of the two opposite latching teeth 54 gradually increases in the direction away from the center of the rotating shaft.

[0059] During the pushing process of the steel bar, the pressing wheel 72 presses the steel bar into the bottom of the annular groove 53, and the steel bar is partially bent, so that the threads on both sides of the steel bar abut against the latching teeth 54, so that when the rotating disk 52 rotates, the latching teeth 54 push the threads, thereby pushing the steel bar to move. When the pressing wheel 72 no longer presses the steel bar, the steel bar recovers its deformation at the rotating disk 52 and moves upward. Since the spacing component between the first inclined surfaces 55 of the two opposing latching teeth 54 increases, the threads of the steel bar no longer abut against the latching teeth 54, so that the rotating disk 52 cannot push the steel bar to move.

[0060] Specifically, refer to Figure 5As shown, the clamping device 7 also includes a driving member; the driving member includes a pressure rod 73, a first connecting rod 74 and a spring 75. One side of the pressure rod 73 is hinged to the rotating arm 71, and the other side is hinged to the first connecting rod 74, and the rotating arm 71 is hinged to the frame 4, and the first connecting rod 74 is also hinged to the frame 4. Therefore, when the construction personnel hold the pressure rod 73 and lift it upward, under the cooperation of the first connecting rod 74 and the rotating arm 71, the rotating arm 71 is rotated toward the first direction, so that the clamping wheel 72 presses the steel bar into the annular groove 53. The spring 75 is connected to the frame 4 and the first connecting rod 74 respectively. When the pressure rod 73 is lifted, the first connecting rod 74 rotates accordingly to stretch the spring 75, so that the spring 75 stores energy, so that the spring 75 has an elastic force to make the first connecting rod 74 rotate in the opposite direction. That is, the spring 75 has an elastic force to drive the first connecting rod 74 to rotate and make the rotating arm 71 rotate in the second direction; wherein the first direction is opposite to the second direction.

[0061] During the pushing process of the steel bars, the ground construction workers can control the stopping and starting of the pushing of the steel bars at any time through the pressure rod 73, so as to facilitate the transfer of the steel bars between different construction platforms and avoid the occurrence of accidents.

[0062] Specifically, continue to refer to Figure 4 As shown, the steel bar pushing device 2 includes a primary power device 5 and a secondary power device 6. The primary power device 5 is located obliquely above the secondary power device 6, and an inclined transition track 56 is provided between the primary power device 5 and the secondary power device 6. The two power devices with different heights and positions can better drive the steel bars to move, ensuring the stability of the steel bar movement during the steel bar pushing process.

[0063] Specifically, in this embodiment, there are multiple structural forms of active nodes, and two forms of active nodes are provided, namely a first active node 32 and a second active node 33 .

[0064] Reference Figure 8 As shown, the first movable node 32 includes a first end plate 321 arranged at one end of the track segment 31, a second end plate 322 arranged at the other end of the track segment 31, and a first connecting bolt. The first end plate 321 is provided with a first arc hole 323, and the second end plate 322 is provided with a first connecting hole. The first connecting bolt passes through the first arc hole 323 and the first connecting hole to lock the first end plate 321 and the second end plate 322 of the two adjacent track segments 31. The first end plate 321 and the second end plate 322 between the two adjacent track segments 31 are abutted against each other. When the deflection angle between the two adjacent track segments 31 needs to be adjusted, the first connecting bolt is screwed to relatively deflect the two track segments 31 so that the first connecting bolt moves in the first arc hole 323, and then the first end plate 321 and the second end plate 322 are locked.

[0065] Reference Fig. 9 and Fig.10 As shown, the second active node 33 includes a first rotating sleeve 331 disposed at one end of the track segment 31 and a second rotating sleeve 332 disposed at the other end of the track segment 31; the first rotating sleeve 331 and the second rotating sleeve 332 of two adjacent track segments 31 are rotatably connected; the first rotating sleeve 331 is provided with a first opening aligned with the notch of the track segment 31, and the second rotating sleeve 332 is provided with a second opening aligned with the notch of the track segment 31. That is, the first rotating sleeve 331 and the second rotating sleeve 332 are both incomplete annular, so that the steel bar can be pulled outward from the first opening and the first opening. When the deflection angle between the two track segments 31 needs to be adjusted, the first rotating sleeve 331 and the second rotating sleeve 332 can be relatively rotated.

[0066] As a further improvement to the second active node 33, the first rotating sleeve 331 is rotatably sleeved outside the second rotating sleeve 332; the track section 31 is hinged with the first rotating sleeve 331, the first rotating sleeve 331 is provided with a first hinge ear 333 on the outside, the track section 31 is provided with a second hinge ear 334 at the bottom, and a telescopic member 335 is connected between the first hinge ear 333 and the second hinge ear 334. By hingedly connecting the track section 31 with the first rotating sleeve 331, the angle between the track section 31 and the first rotating sleeve 331 can be changed, that is, the angle between two adjacent track sections 31 can be changed, and the angle between two adjacent track sections 31 can be limited by adjusting the length of the telescopic member 335, and the telescopic member 335 can be a telescopic oil cylinder or a bidirectional threaded screw. In tunnel construction, the height of the end of the track section 31 can be changed by changing the angle between adjacent track sections 31, so that when facing tunnels of different heights, it can be ensured that the steel bars are pushed to the specified height.

[0067] Specifically, a connecting plate 339 is provided inside the first rotating sleeve, and the track segment 31 is hinged to the connecting plate 339 , thereby realizing the hinge connection between the track segment 31 and the first rotating sleeve 331 .

[0068] Specifically, continue to refer to Fig.10As shown, the first rotating sleeve 331 includes a first arc plate 336 and a first bent plate connected to the end surface of the first arc plate 336, and a second arc hole 338 is provided on the first bent plate; the second rotating sleeve 332 includes a second arc plate 337 and a second bent plate connected to the end plate of the second arc plate 337, and a third arc hole is provided on the second bent plate; the first arc plate 336 is slidably sleeved outside the second arc plate 337, the second arc hole 338 is aligned with the third arc hole, and the second connecting bolt passes through the second arc hole 338 and the third arc hole to lock the first bent plate and the second bent plate. By rotating the first rotating sleeve 331 and the second rotating sleeve 332 relatively, the second connecting bolt is moved in the second arc hole 338 and the third arc hole and then locked, so as to achieve the deflection adjustment between adjacent track sections 31.

[0069] It should be noted that, in other embodiments, the curved feeding track 3 may use only the first active node 32 or only the second active node 33, but in this embodiment, referring to Figure 6 As shown, the curved feeding track 3 uses both the first active node 32 and the second active node 33 .

[0070] Specifically, refer to Fig.11 As shown, the curved feeding track 3 is provided with a steel bar ejection mechanism 8; one end of the stopper 313 and the side wall 312 of the track section 31 body form an escape port 314 for accommodating the escape of the steel bar. After the bending and feeding is completed, the steel bar extends from one end of the tunnel section to the other end. At this time, part of the steel bar is still inside the curved feeding track 3. The steel bar ejection mechanism 8 can lift up the part of the steel bar and let it leave the curved feeding track 3 through the escape port 314.

[0071] Specifically, refer to Fig.12 As shown, the steel bar ejection mechanism 8 comprises a mounting plate 81, a lifting cylinder 82, a connecting rod assembly and an ejection plate 83. The mounting plate 81 is mounted on the bottom of the track section 31, one end of the lifting cylinder 82 is connected to the mounting plate 81, and the other end is hinged to the connecting rod assembly; a mounting ear 84 is provided on the side of the track section 31 opposite to the ejection outlet 314, and a through slot is provided on the track section 31, and the through slot extends from the side of the track section 31 to the bottom; the ejection plate 83 is hinged to the mounting ear 84 and aligned with the through slot, and the connecting rod assembly is hinged to the ejection plate 83; the lifting cylinder 82 drives the connecting rod assembly to move and drive the ejection plate 83 to rotate, so that the end of the ejection plate 83 moves along the outer side of the track section 31 to the notch of the track section 31. An ejection inclined surface is provided on the side of the ejection plate 83 that contacts the steel bar, and when the ejection plate 83 rotates, the steel bar is pushed to the ejection outlet 314 by the ejection inclined surface, and the steel bar can be taken out.

[0072] Since the steel bars are in a bent state in the bent feeding chute, some positions will be against the inner wall of the track groove, and the steel bars have accumulated a certain elastic potential energy, it is difficult for construction workers to directly take the steel bars out of the track groove. However, the steel bar ejecting mechanism 8 is used to eject the steel bars, making it more convenient and labor-saving for construction workers to operate.

[0073] Specifically, refer to Fig.12 As shown, the connecting rod assembly includes a second connecting rod 85, a third connecting rod 86 and a fourth connecting rod 87. One end of the second connecting rod 85 is hinged to the lifting cylinder 82, the middle is hinged to the bottom of the track section 31, and the other end is hinged to the third connecting rod 86. The third connecting rod 86 is hinged to the fourth connecting rod 87, and the fourth connecting rod 87 is hinged to the ejection plate 83. The third connecting rod 86 is provided with a long groove 88 extending along its length direction, and the connecting ear is provided with a sliding rod, which is slidably placed in the long groove 88. The second connecting rod 85 is lifted by the lifting cylinder 82, so that the third connecting rod 86 is lowered, thereby driving the ejection plate 83 to rotate toward the inside of the track groove and eject the steel bar; conversely, when the lifting cylinder 82 retracts, the ejection plate 83 moves in the opposite direction to the outside of the track groove to avoid affecting the pushing operation of the steel bar.

[0074] Example 2

[0075] This embodiment provides a construction method using the tunnel secondary lining steel bar feeding system described in Embodiment 1, comprising the following steps:

[0076] Adjust the angles between adjacent track sections 31 so that the curved feeding track 3 forms an extended track that matches the shape of the tunnel;

[0077] The construction personnel move the steel bars to the power device, and drive the rotating arm 71 to rotate so that the pressing wheel 72 presses the steel bars into the power device;

[0078] The power device is started to push the steel bar toward the curved feeding track 3, so that the steel bar is bent along the shape of the curved feeding track 3;

[0079] A plurality of construction workers stand on different operating platforms of the trolley 1, pull the steel bars pushed out from the steel bar bending feeding track 3, and push the steel bars with the help of the power device so that the steel bars are moved to match the contour inside the tunnel;

[0080] The steel bars partially located in the curved feeding track 3 are moved outwards.

[0081] Specifically, the first active node 32 or the second active node 33 is selected between adjacent track sections 31 as needed, and the deflection angle or inclination angle between adjacent track sections 31 is adjusted to make the curved loading track 3 form an extended track that matches the tunnel shape.

[0082] In this embodiment, the steel bars are pushed to at least the third-level construction platform 13 by the bending feeding system, which reduces the number of personnel. The steel bars are bent by the bending feeding system, which also reduces the energy required by the construction personnel, saves time and effort, improves efficiency and reduces costs.

[0083] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A tunnel secondary lining steel bar feeding system, comprising a trolley; characterized in that: Also includes: The steel bar pushing device comprises a frame, a power device and a pressing device; the frame is located at the front side of the end face of the trolley; The power device is mounted on the vehicle frame and is used to push the steel bars; the pressing device includes a rotating arm and a pressing wheel, the rotating arm is rotatably mounted on the vehicle frame, and the pressing wheel is rotatably mounted on the rotating arm, and when the rotating arm rotates, the pressing wheel is driven to press the steel bars into the power device; A curved loading track is connected to the vehicle frame; the curved loading track includes a plurality of track sections, each of which includes a track section body and a stopper; a track groove extending along its length direction is provided in the track section body, and the stopper is connected to the track section body and is located above the groove opening of the track groove; the plurality of track sections are sequentially connected end to end, so that the plurality of track grooves form a continuous curved loading track, the curved loading track extends from the power device toward the top of the trolley, and the extension track is curved; adjacent track sections are movably connected to form active nodes, so that the shape of the extension track of the curved loading track changes after the adjacent track sections are deflected; The movable node comprises a first rotating sleeve arranged at one end of the track segment and a second rotating sleeve arranged at the other end of the track segment; the first rotating sleeve and the second rotating sleeve of two adjacent track segments are rotatably connected; the first rotating sleeve is provided with a first opening aligned with the track segment notch, and the second rotating sleeve is provided with a second opening aligned with the track segment notch; The first rotating sleeve is rotatably sleeved outside the second rotating sleeve; the track section is hinged to the first rotating sleeve, a first hinge ear is provided on the outer side of the first rotating sleeve, a second hinge ear is provided at the bottom of the track section, and a telescopic piece is connected between the first hinge ear and the second hinge ear.

2. A tunnel secondary lining steel bar feeding system according to claim 1, characterized in that: The power device includes a motor and a rotating disk, and the motor is installed on the frame; the rotating disk is connected to the rotating shaft of the motor, and an annular groove with the rotating shaft as the axis is provided on the circumference of the rotating disk, and a plurality of latching teeth arranged around the center of the rotating shaft are provided on the inner wall of the annular groove, and the latching teeth on the two inner walls of the annular groove correspond to each other one by one, and a first inclined surface is provided on the side of the latching teeth away from the inner wall, and the spacing between the first inclined surfaces of the two opposite latching teeth gradually increases in the direction away from the center of the rotating shaft.

3. A tunnel secondary lining steel bar feeding system according to claim 2, characterized in that: The clamping device also includes a driving member; the driving member includes a pressure rod, a first connecting rod and a spring; one side of the pressure rod is hinged to the rotating arm, and the other side is hinged to the first connecting rod, and the first connecting rod is hinged to the frame, so that when the pressure rod is moved down, the rotating arm is driven to rotate in the first direction; the spring is respectively connected to the frame and the first connecting rod, and the spring has an elastic force that drives the first connecting rod to rotate and causes the rotating arm to rotate in the second direction; when the rotating arm rotates in the first direction, the clamping wheel presses the steel bar into the power device, and the first direction is opposite to the second direction.

4. A tunnel secondary lining steel bar feeding system according to claim 2, characterized in that: The steel bar pushing device comprises a primary power device and a secondary power device; the primary power device is located obliquely above the secondary power device, and an inclined transition track is provided between the primary power device and the secondary power device.

5. A tunnel secondary lining steel bar feeding system according to claim 1, characterized in that: The first rotating sleeve includes a first arc plate and a first bent plate connected to the end surface of the first arc plate, and a second arc hole is provided on the first bent plate; the second rotating sleeve includes a second arc plate and a second bent plate connected to the end plate of the second arc plate, and a third arc hole is provided on the second bent plate; the first arc plate is slidably sleeved outside the second arc plate, the second arc hole is aligned with the third arc hole, and the second connecting bolt passes through the second arc hole and the third arc hole to lock the first bent plate and the second bent plate.

6. A tunnel secondary lining steel bar feeding system according to claim 1, characterized in that: The curved feeding track is provided with a steel bar ejection mechanism; one end of the limiter and the side wall of the track section body form an ejection port for accommodating the ejection of the steel bar; The steel bar ejection mechanism includes a mounting plate, a lifting cylinder, a connecting rod assembly and an ejection plate; the mounting plate is installed at the bottom of the track section, one end of the lifting cylinder is connected to the mounting plate, and the other end is hinged to the connecting rod assembly; a mounting ear is provided on the side of the track section opposite to the ejection outlet, and a through groove is provided on the track section, and the through groove extends from the side of the track section to the bottom; the ejection plate is hinged to the mounting ear and aligned with the through groove, and the connecting rod assembly is hinged to the ejection plate; the lifting cylinder drives the connecting rod assembly to move and drive the ejection plate to rotate, so that the end of the ejection plate moves along the outside of the track section to the groove of the track section.

7. A construction method using the tunnel secondary lining steel bar feeding system according to claim 1, characterized in that: The steps include: Adjust the angles between adjacent track sections so that the curved feeding track forms an extended track that matches the tunnel shape; The construction workers move the steel bars to the power device and drive the rotating arm to rotate so that the pressing wheel presses the steel bars into the power device; Start the power device to push the steel bars toward the curved feeding track, so that the steel bars are bent according to the shape of the curved feeding track; Multiple construction workers stand on different operating platforms of the trolley, pulling the steel bars pushed out from the steel bar bending feeding track, and push the steel bars with the help of the power device to move them to match the contour inside the tunnel; Move some of the steel bars located in the curved feeding track to the outside.

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