Tunnel automatic secondary lining trolley and mechanical arm pouring system thereof

Abstract

The utility model relates to an automatic tunnel secondary lining trolley and a mechanical arm pouring system thereof. The existing trolley has the problems of low efficiency, large slump loss and the like caused by more pipelines, and the problem of segregation caused by the fact that concrete enters a window through a fixed chute. The system comprises a trolley portal, a pouring trolley, a concrete feeding pump pipe and a folding mechanical arm. The pouring trolley is arranged at the bottom of the trolley portal, the fixed end of the folding mechanical arm is installed on the pouring trolley, the concrete feeding pump pipe is arranged above the trolley portal and arranged along the folding mechanical arm, and a pumping opening in the end of the concrete feeding pump pipe is located at the working end of the folding mechanical arm. The device is few in pipelines, easy to clean, convenient to operate, low in working intensity of workers, high in pouring efficiency and capable of achieving under-pressure pouring, concrete disintegration is avoided, and the lining process and quality are well guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an automatic tunnel secondary lining trolley and a mechanical arm pouring system thereof. Background Art

[0002] The traditional steel mold lining trolleys commonly used in tunnel construction have a great impact on the quality of lining casting by human factors. After construction, the tunnel lining has a series of problems and defects such as loose concrete, vault cavities, water seepage, and cracks, which has increased the cost of funds and construction period for later treatment. With the gradual development of lining construction equipment, lining trolleys with a high degree of automation have emerged.

[0003] However, there are still many problems in the specific operation of the automated lining trolley. The material distribution system of the automated lining trolley is mostly composed of a material distribution trolley, a conveying pipeline or a fixed chute. For a trolley with a conveying pipeline, there are many pipelines, and the pipelines are opened and connected frequently during the pouring process, resulting in low pouring efficiency and large slump loss. Once the pipe is blocked, it is difficult to handle, and the workload of cleaning the pipeline after pouring is large. For a trolley with a fixed chute, concrete enters the window through the fixed chute, which is easy to cause concrete segregation. In addition, the pipelines or chutes are mostly concentrated on the upper part of the trolley, which also seriously affects the passage of ventilation pipes and operators.

[0004] Therefore, it is necessary to design new equipment to overcome the above-mentioned defects. Summary of the invention

[0005] The utility model aims to provide a tunnel automated secondary lining trolley and its mechanical arm pouring system to solve the problems of low efficiency and large slump loss caused by the large number of pipelines laid on the existing trolley, as well as the segregation problem caused by concrete entering the window through a fixed chute.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A mechanical arm pouring system for an automated tunnel secondary lining trolley, the system comprising a trolley gantry, a pouring trolley, a concrete feed pump pipe and a folding mechanical arm;

[0008] The pouring trolley is arranged at the bottom of the trolley gantry, the fixed end of the folding mechanical arm is installed on the pouring trolley, the concrete feed pump pipe is arranged above the trolley gantry and along the folding mechanical arm, and the pumping port at the end of the concrete feed pump pipe is located at the working end of the folding mechanical arm.

[0009] Furthermore, a slewing bearing is provided at the bottom of the pouring trolley, and the fixed end of the folding mechanical arm is mounted to the slewing bearing and rotates around the slewing bearing.

[0010] Furthermore, a longitudinal running track is provided at the bottom of the trolley gantry, and the pouring trolley moves longitudinally along the running track.

[0011] Furthermore, two travel tracks are provided at the bottom of the trolley gantry, and the two ends of the pouring trolley straddle the travel tracks on both sides.

[0012] On the other hand, there is provided a tunnel automated secondary lining trolley, the secondary lining trolley comprising the system;

[0013] The top of the trolley portal is a trolley top mold, and the two sides of the trolley portal are trolley side molds. The trolley top mold and the trolley side molds are installed to the trolley portal through a trolley supporting mold system.

[0014] Furthermore, the bottom of the trolley gantry moves longitudinally along the trolley track.

[0015] Furthermore, a lower concrete pouring window is provided on the trolley side mold.

[0016] Furthermore, a dome pouring port is provided on the top mold of the trolley.

[0017] Furthermore, a short hose for connecting with the pumping port is provided at the dome filling port.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model provides a tunnel automated secondary lining trolley and a mechanical arm pouring system thereof, which has few pipelines, is easy to clean, is convenient to operate, has low work intensity for workers, has high pouring efficiency, can realize pressure pouring, avoids concrete segregation, and better guarantees the lining process and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an elevation view of the utility model.

[0022] Figure 2 It is a side view of the utility model.

[0023] The symbols in the figure are:

[0024] 1- pouring trolley, 2- slewing bearing, 3- folding mechanical arm, 4- walking track, 5- trolley track, 6- pumping port, 7- ladder, 8- arch pouring port, 9- trolley gantry, 10- trolley top formwork, 11- trolley side formwork, 12- trolley support formwork system, 13- concrete feed pump pipe. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", etc. should be understood in a broad sense, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model provides a mechanical arm pouring system for an automated tunnel secondary lining trolley, which has the characteristics of fewer pipelines, pressure pouring, easy cleaning, and a large space for an upper working platform of the trolley, and can be used for automated construction of tunnel secondary linings.

[0029] like Figure 1-2, the system includes a trolley gantry 9, the bottom of which moves longitudinally along the trolley track 5. The system also includes a pouring trolley 1, a concrete feed pump pipe 13 and a folding mechanical arm 3. The pouring trolley 1 is arranged at the bottom of the trolley gantry 9, the fixed end of the folding mechanical arm 3 is installed on the pouring trolley 1, the concrete feed pump pipe 13 is arranged above the trolley gantry 9 and arranged along the folding mechanical arm 3, and the pumping port 6 at the end of the concrete feed pump pipe 13 is located at the working end of the folding mechanical arm 3. Further, a slewing bearing 2 is also provided at the bottom of the pouring trolley 1, and the fixed end of the folding mechanical arm 3 is installed on the slewing bearing 2 and can rotate around the slewing bearing 2. In addition, a longitudinal walking track 4 is provided at the bottom of the trolley gantry 9, and the pouring trolley 1 can move longitudinally along the walking track 4. Specifically, two walking tracks 4 are provided at the bottom of the trolley gantry 9, and the two ends of the pouring trolley 1 straddle the walking tracks 4 on both sides.

[0030] On the other hand, the utility model also provides an automated secondary lining trolley for a tunnel, the secondary lining trolley includes the above-mentioned robotic arm pouring system, a trolley top mold 10 is located above the trolley gantry 9, and trolley side molds 11 are located on both sides of the trolley gantry 9. The trolley top mold 10 and the trolley side molds 11 are installed to the trolley gantry 9 through a trolley supporting mold system 12.

[0031] The trolley side mold 11 is provided with a lower concrete pouring window for lower concrete pouring. The pouring trolley 1 moves forward and backward to drive the folding mechanical arm 3 to move longitudinally along the middle of the trolley. Under the control of the hydraulic system, the folding mechanical arm 3 can align the pumping port 6 with the pouring window for material distribution. The lower concrete pouring windows are evenly arranged on the trolley side mold 11, and the folding mechanical arm 3 can distribute material window by window.

[0032] The top mold 10 of the trolley is provided with a vault pouring port 8, and a short section of a hose for connecting with a pumping port 6 is provided at the vault pouring port 8 for pouring vault concrete.

[0033] The lower and middle windows of the trolley side mold 11 are poured by one person remotely controlling the mechanical arm and two concrete workers. Only the top of the arch needs to be manually connected to the pumping port of the mechanical arm, which can be easily completed by only three people.

[0034] The pouring system based on the utility model can carry out the construction of the tunnel secondary lining with high quality, including:

[0035] (1) Lubricate the pipe with mortar.

[0036] After the trolley is positioned and reinforced, before pouring new concrete, first pump about 1 to 2 m 3 Mortar with the same proportion as lining concrete is used to lubricate the pipes to prevent blockage of the main pipes caused by direct pouring. It can also ensure the close contact between the new and old concrete surfaces and prevent the deposition of coarse aggregates in the longitudinal construction joints, resulting in honeycombed surfaces.

[0037] (2) Pour lower concrete.

[0038] The operator remotely controls the folding mechanical arm 3, and the pouring trolley 1 moves longitudinally along the walking track 4 to the position corresponding to the lower concrete pouring window, then rotates the slewing bearing 2, aligns the pumping port 6 with the window, slowly extends the folding mechanical arm 3, and pours the concrete after the pumping port 6 is inserted into the lower concrete pouring window. The whole process is layered and symmetrical pouring to avoid concentrated or cross-layer pouring.

[0039] (3) Pour the vault concrete.

[0040] The pumping port 6 at the front end of the folding mechanical arm 3 is facing upwards, and 2-3 operators connect the short hose to the arch top pouring port 8 to realize the arch concrete pouring. The operators can reach the top of the trolley gantry 9 through the top of the ladder 7 set near the trolley gantry 9 to operate.

[0041] (4) Pipeline cleaning.

[0042] After the concrete pouring of the arch is completed, the pumping port 6 at the front end of the folding mechanical arm 3 is disconnected from the short section hose. After cleaning the concrete in the delivery pump hopper, two φ150mm special pump pipe cleaning balls are inserted from the delivery feed port, and an appropriate amount of water is injected into the hopper. The delivery pump is started, and the clean water drives the cleaning balls to quickly pass through the entire pipeline and take out the concrete in the pump pipe; after two operations, the pipeline can be completely cleaned.

[0043] The following control points should be noted during the operation and construction of the perfusion system of this utility model:

[0044] (1) The workability and slump of on-site concrete must be within the design allowable range, otherwise it must not be pumped to avoid pipe blockage and affect the quality of concrete pouring.

[0045] (2) Concrete should be poured symmetrically from bottom to top, layer by layer, window by window. The maximum drop height should not exceed 2.0m. The height difference between the front and rear concrete should not exceed 0.6m, and the height difference between the left and right sides should not exceed 0.5m to avoid excessive pressure on the trolley formwork on one side, which may cause the trolley to shift or deform.

[0046] (3) When pouring concrete for the vault, it is necessary to timely assess the remaining pouring volume and observe the concrete surface height from the end formwork, and stop pumping in time to avoid the vault from falling out or being crushed by the trolley.

[0047] (4) Only the same row or local high-frequency vibrators below the concrete surface can be turned on each time, and the vibration time should not be too long, generally less than 10 seconds. Empty vibration (no concrete at the vertical formwork of the vibrator) or over-vibration is strictly prohibited.

[0048] When this system is used in engineering practice, operators only need to remotely control to achieve layered and window-by-window, symmetrical concrete pouring, and can achieve pressure pouring, which better guarantees the lining process and quality. If each mold is 12m long, the pouring time is only 9 to 10 hours, with high efficiency and low labor intensity. In addition, the trolley has high rigidity, stable structure, and small misalignment at the construction joint. In addition, the high-frequency pneumatic vibration and other functions also further improve the lining quality and reduce the cost of defect remediation in the later stage.

[0049] The perfusion system of the utility model has the following technical advantages:

[0050] 1. The foldable mechanical arm design can ensure that the pump pipe can be inserted into the corresponding injection windows at the lower, middle and upper parts without any obstacles, and at the same time, it will not affect the passage of construction vehicles under the trolley.

[0051] 2. The inverted slewing structure, this downward design can ensure the longitudinal movement of the pouring system, increase the space of the upper working platform, and ensure the transverse connection between the two longitudinal beams of the walking track, ensuring the overall rigidity and stability of the trolley skeleton structure.

[0052] 3. Large upward diagonal braces are used on the inner sides of the molds on both sides of the trolley to replace the traditional large number of horizontal or downward screws or struts. On the one hand, the side pressure of the concrete is transferred to the upper part of the trolley gantry, and the left and right internal forces are offset, thereby reducing the pressure and deformation of the middle and lower cantilever structure columns and reducing the number of gantries; on the other hand, it also reduces the workload of trolley positioning.

[0053] 4. Ground support screws and vertical screws are added to the bottom of the molds on both sides of the trolley to transfer the local lateral pressure of the concrete on the template to the ditch base grooves on both sides, and the ground support screws on the inner side of the lower longitudinal beam are cancelled, which improves the passability of the road surface under the trolley.

[0054] 5. The robotic arm perfusion system is controlled by remote control, which reduces labor intensity, improves construction efficiency and ensures the quality of finished products.

[0055] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A mechanical arm pouring system for an automated secondary lining trolley in a tunnel, characterized by: The system comprises a trolley gantry (9), a pouring trolley (1), a concrete feed pump pipe (13) and a folding mechanical arm (3); The pouring trolley (1) is arranged at the bottom of the trolley gantry (9), the fixed end of the folding mechanical arm (3) is installed on the pouring trolley (1), the concrete feed pump pipe (13) is arranged above the trolley gantry (9) and along the folding mechanical arm (3), and the pumping port (6) at the end of the concrete feed pump pipe (13) is located at the working end of the folding mechanical arm (3).

2. According to claim 1, a mechanical arm pouring system for a tunnel automated secondary lining trolley is characterized by: A slewing bearing (2) is provided at the bottom of the pouring trolley (1), and a fixed end of the folding mechanical arm (3) is mounted on the slewing bearing (2) and rotates around the slewing bearing (2).

3. The mechanical arm pouring system of the tunnel automated secondary lining trolley according to claim 1 is characterized by: A longitudinal running track (4) is provided at the bottom of the trolley gantry (9), and the pouring trolley (1) moves longitudinally along the running track (4).

4. The mechanical arm pouring system of the tunnel automated secondary lining trolley according to claim 3 is characterized by: Two travel tracks (4) are provided at the bottom of the trolley door frame (9), and the two ends of the pouring trolley (1) are straddled on the travel tracks (4) on both sides.

5. A tunnel automated secondary lining trolley, characterized in that: The secondary lining trolley comprises the system of claim 1; The top of the trolley door frame (9) is a trolley top mold (10), and the two sides of the trolley door frame (9) are trolley side molds (11). The trolley top mold (10) and the trolley side molds (11) are installed on the trolley door frame (9) through a trolley supporting mold system (12).

6. The automatic secondary lining trolley for tunnel according to claim 5, characterized in that: The bottom of the trolley door frame (9) moves longitudinally along the trolley track (5).

7. The tunnel automated secondary lining trolley according to claim 5, characterized in that: The trolley side mold (11) is provided with a lower concrete pouring window.

8. The tunnel automated secondary lining trolley according to claim 5, characterized in that: The trolley top mold (10) is provided with a dome pouring port (8).

9. The automatic secondary lining trolley for tunnel according to claim 8, characterized in that: The dome filling port (8) is provided with a short hose for connecting to the pumping port (6).

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