Tunnel repair concrete preparing and pouring marshalling

Abstract

The utility model belongs to the technical field of tunnel repair concrete cast-in-place, and particularly provides a tunnel repair concrete preparing and casting marshalling. The tunnel repair concrete preparing and pouring marshalling comprises a storage bin, a stirring machine, a trailer pump, a distributing machine, a concrete preparing vehicle and a concrete distributing vehicle, the storage bin and the stirring machine are arranged on the concrete preparing vehicle, the trailer pump and the distributing machine are arranged on the concrete distributing vehicle, and a concrete conveying mechanism is arranged between the stirring machine and the trailer pump. The concrete conveying mechanism is used for receiving concrete discharged by the mixer and conveying the concrete to the trailer pump. Related equipment or devices for preparing concrete and pumping and distributing concrete are respectively arranged on different working vehicles, so that more space is provided for storing concrete raw materials under the condition that the load of the vehicle frame is not exceeded, a larger trailer pump is configured, and concrete with larger volume can be prepared and poured by entering a hole (tunnel) at one time.

Description

Technical Field

[0001] The utility model belongs to the technical field of on-site pouring of tunnel repair concrete, in particular to a tunnel repair concrete preparation and pouring group. Background Art

[0002] As the operation time of traffic tunnels continues to increase, tunnel disease problems are becoming more and more obvious. Common tunnel diseases include cracking, block falling, mesh cracking and water leakage of the lining structure, which seriously threaten the safe passage of vehicles. The repair of tunnel disease problems has become a hot issue in the current tunnel construction field.

[0003] Repairing tunnel defects generally involves secondary concrete pouring. Traditional concrete pouring involves using concrete tankers to transport concrete prepared at a concrete preparation station to the tunnel construction site, and using a trailer pump to pump the concrete to the pouring formwork. However, for operating rail transit tunnels, the above method is inefficient due to limitations in tunnel space, train window time, and other factors, and it is difficult to ensure the safety of workers.

[0004] The Chinese invention patent application with application publication number CN111894631A (publication date: 2020.11.06) discloses a trolley for remediating existing tunnel defects, which includes a tractor and a work vehicle group. The work vehicle group includes a concrete work vehicle, which includes a storage bin (material storage pool), a mixing pump, a concrete placing machine, etc. Driven by the tractor, the concrete vehicle can enter and exit the tunnel to realize real-time preparation and pumping of materials in the tunnel.

[0005] However, for tunnel repair projects with serious disease problems, there will be more locations in the tunnel that require secondary pouring of lining, so there is also a large demand for the preparation volume of concrete. Since the corresponding track foundation already exists in the tunnel, and considering the turning radius, the size and load capacity of the work vehicle frame are limited. The above-mentioned concrete work vehicle integrates all equipment such as silos, mixing pumps, and concrete placing machines on the same vehicle. Considering the spatial layout of each device, it is difficult to set up a larger storage silo and a trailer pump that can meet large-volume pumping. In this way, it is difficult for a concrete truck to carry all the cubic meters of concrete required for tunnel repair operations at one time, and it may actually need to go in and out of the tunnel multiple times to add materials. However, the train skylight period is short, so multiple round trips to add materials will seriously affect the pouring efficiency. Utility Model Content

[0006] The utility model aims to provide a tunnel repair concrete preparation and pouring group to solve the technical problem that the existing technology integrates concrete preparation, pumping, material distribution and other equipment on the same vehicle and cannot meet the single large-scale preparation.

[0007] To achieve the above-mentioned purpose, the technical solution of the tunnel repair concrete preparation and pouring group provided by the utility model is:

[0008] A tunnel repair concrete preparation and pouring group includes a storage bin, a mixer, a trailer pump and a concrete placing machine. The trailer pump is used to pump concrete to the concrete placing machine. The group also includes a concrete preparation vehicle and a concrete placing vehicle. The storage bin and the mixer are arranged on the concrete preparation vehicle. The trailer pump and the concrete placing machine are arranged on the concrete placing vehicle. A concrete conveying mechanism is arranged between the mixer and the trailer pump. The concrete conveying mechanism is used to receive concrete discharged from the mixer and convey the concrete to the trailer pump.

[0009] As a further improvement, the concrete conveying mechanism is movably mounted on one of the concrete preparation vehicle and the concrete distribution vehicle, and is movable in a direction approaching the other of the concrete distribution vehicle and the concrete preparation vehicle.

[0010] As a further improvement, the concrete conveying mechanism is hinged on the concrete preparation vehicle or the concrete distribution vehicle, and the hinge axis extends along the left-right direction of the concrete preparation vehicle or the concrete distribution vehicle.

[0011] As a further improvement, the concrete conveying mechanism is a screw conveyor.

[0012] As a further improvement, the screw conveyor is arranged on the concrete preparation vehicle obliquely upward.

[0013] As a further improvement, the concrete placing boom comprises a concrete placing folding arm, a concrete placing boom mounting seat is provided on the concrete placing vehicle, and the concrete placing folding arm is swingably mounted on the concrete placing boom mounting seat.

[0014] As a further improvement, the end of the material placing folding arm is mounted on a material placing machine mounting seat, and a counterweight unit for balancing the material placing folding arm torque is also provided on the material placing machine mounting seat.

[0015] As a further improvement, the material placing machine mounting seat is a swivel seat, and the rotation axis of the swivel seat extends in the vertical direction.

[0016] As a further improvement, the tunnel repair concrete preparation and pouring formation also includes an auxiliary work vehicle, on which an auxiliary hanging basket platform is provided for the activities of the staff.

[0017] As a further improvement, the auxiliary hanging basket platform is installed on the auxiliary work vehicle through a moving seat that can move forward and backward, and the auxiliary work vehicle is provided with a track for the moving seat to move.

[0018] The beneficial effect of the utility model is that the utility model improves the on-site preparation and pouring operation train group of the tunnel repair work in the prior art. The storage bin and the mixer for realizing concrete preparation are arranged on the concrete preparation vehicle, and the drag pump and the distributor for realizing pumping and pouring are arranged on another independent concrete distributor vehicle to form a preparation and pouring formation. When performing tunnel repair work, the concrete mixed by the mixer can be transported to the drag pump through the concrete conveying mechanism, and pumped to the pouring working surface by the drag pump and the distributor. In this way, when the frame size and load are determined, the load-carrying transportation capacity of each vehicle can be fully utilized, more concrete raw materials can be carried at one time, and a large amount of drag pumps can be configured. In actual use, there is no need to go in and out of the tunnel many times, and the efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a tunnel repair concrete preparation and pouring formation in the utility model;

[0020] Figure 2 for Figure 1 The structural diagram of the concrete preparation vehicle;

[0021] Figure 3 for Figure 1 The structural diagram of the concrete placing truck;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the auxiliary work vehicle.

[0023] Description of reference numerals:

[0024] 1. Tractor; 2. Frame; 3. Concrete preparation vehicle; 4. Concrete placing vehicle; 5. Auxiliary operation vehicle; 3.1. Screw conveyor; 3.2. Mixer; 3.3. Storage bin; 3.4. Water tank; 3.5. Electric control cabinet; 3.6. First generator; 4.1. Material placing folding arm; 4.2. Rotating seat; 4.3. Counterweight unit; 4.4. Drag pump; 5.1. Hanging basket; 5.2. Mechanical arm frame; 5.3. Mobile seat; 5.4. Second generator; 5.5. Track. DETAILED DESCRIPTION

[0025] When the tunnel repair work group or trolley moves in the tunnel, the maximum size and maximum load of the frame are determined by factors such as track load, turning radius, and vehicle limit conditions. The existing technology concentrates all the devices or equipment such as concrete preparation and pumping on one vehicle, but each device requires an independent space, which limits the layout of larger storage silos and drag pumps, and the amount of concrete that can be prepared at one time is limited. For tunnels with large repair volumes, it is necessary to enter and exit the tunnel multiple times to add materials, which is inefficient.

[0026] In order to solve the above problems, the basic technical concept of the utility model is to respectively set the relevant equipment or devices for concrete preparation and concrete pumping and distribution on different working vehicles, that is, to form a concrete preparation vehicle and a concrete distribution vehicle respectively. And a concrete conveying mechanism is arranged between the concrete preparation vehicle and the concrete distribution vehicle, and the concrete prepared on the concrete preparation vehicle is pumped to the pouring working surface by the concrete distribution vehicle. In this way, there is more space to store concrete raw materials without exceeding the load of the vehicle frame, and a larger drag pump is configured, so that a larger volume of concrete can be prepared and poured in one time in the hole (tunnel).

[0027] The present invention is further described in detail below in conjunction with the embodiments and drawings.

[0028] Specific embodiment 1 of the tunnel repair concrete preparation and pouring group provided by the utility model:

[0029] like Figure 1 As shown, the tunnel repair concrete preparation and pouring formation in this embodiment includes a tractor 1, a concrete preparation vehicle 3 and a concrete distribution vehicle 4. The tractor 1 is used to drive the concrete preparation vehicle 3 and the concrete distribution vehicle 4 to enter and exit the tunnel. The concrete preparation vehicle 3 is mainly used to carry the raw materials for concrete preparation and stir and mix to form concrete, and the concrete distribution vehicle 4 is mainly used to pump concrete to the pouring working surface. The concrete prepared by the concrete preparation vehicle 3 can be transported to the concrete distribution vehicle 4 through the concrete conveying mechanism to complete the preparation and distribution pouring process.

[0030] The tractor 1 can be selected from one of the prior art, which has its own power and can provide traction power for the concrete distribution vehicle 4 and the concrete preparation vehicle 3. In other embodiments, a drive motor or a drive hydraulic motor can be directly installed on the frame 2 of the concrete preparation vehicle 3 and the concrete distribution vehicle 4 to realize the self-driving of the concrete preparation vehicle 3 and the concrete distribution vehicle 4, and the tractor 1 can be omitted.

[0031] like Figure 2As shown, the concrete preparation vehicle 3 includes a frame 2, on which a storage bin 3.3 and a mixer 3.2 are installed. The storage bin 3.3 is used to store concrete dry materials, such as cement, sand, gravel, mineral powder, machine-made sand and other raw materials. The concrete dry materials in the storage bin 3.3 can be transported to the mixer 3.2. The specific conveying mechanism can adopt a belt conveyor or a scraper conveyor chain in the prior art, which will not be described in detail here. In order to facilitate the addition of water to the mixer 3.2, a water tank 3.4 is also provided on the frame 2 in this embodiment. The water tank 3.4 adds water required for concrete mixing and preparation to the mixer 3.2 through a water supply pipe (not shown in the figure). The mixer 3.2 can also be a forced mixer in the prior art. According to the requirements of the repair operation, concrete dry materials and water of different proportions are added to the mixer 3.2, and concrete is formed after being mixed by the mixer 3.2.

[0032] like Figure 3 As shown, a concrete placing vehicle 4 is provided with a placing machine and a drag pump 4.4 installed on the frame. The drag pump 4.4 can also be selected from one of the existing technologies. The drag pump 4.4 that meets the pumping capacity can be selected according to the demand for the pouring volume. The placing machine includes a basic pumping pipeline and a placing arm 4.1. The placing arm 4.1 is swingably mounted on the placing machine mounting seat on the frame to form a swinging and unfolding effect, so as to cover the pouring demand at the top of the tunnel. The placing machine mounting seat is formed by a swivel seat 4.2. Regarding the swivel seat 4.2, it can be understood by ordinary technicians in this field that it should include a fixed part and a swivel part. The swivel part can be the bearing itself or a swivel part installed on the bearing. The swivel axis of the swivel seat 4.2 extends in the vertical direction. At this time, the swivel seat 4.2 drives the placing arm 4.1 to rotate relative to the tunnel to achieve full coverage of the tunnel circumference. Moreover, as Figure 3 As shown, the end of the material distribution arm 4.1 is installed on the rotating seat 4.2, which is convenient for installation and swinging of the material distribution arm 4.1. At this time, in order to maintain the balance of the material distribution arm 4.1 and the rotating seat 4.2, a counterweight unit 4.3 is also provided on the mounting seat of the material distribution machine. The counterweight unit 4.3 is arranged on the side of the rotating seat 4.2 away from the material distribution arm 4.1, which can balance the moment of the material distribution arm. In other embodiments, the material distribution machine can only include a basic arm frame, and the rotating seat 4.2 or the swinging material distribution arm can be selectively omitted. In this case, a soft material distribution pipe is selected accordingly, and the ductility deformation of the pipe itself is used during material distribution to cover the entire tunnel.

[0033] In addition, the concrete preparation vehicle 3 in this embodiment is also equipped with a first generator 3.6 and an electric control cabinet 3.5. The first generator 3.6 can supply power to equipment that needs electricity, and the electric control cabinet 3.5 is used to arrange the controllers of various electrical equipment. In other embodiments, according to the different models of the tow pump and the concrete placing machine, if space permits, the first generator 3.6 and the electric control cabinet 3.5 can also be arranged on the concrete placing vehicle 4. Of course, a larger generator can also be arranged on the tractor 1, which can supply power to other electrical equipment while meeting the travel of the tractor 1. In addition, in other embodiments, the water tank 3.4 may not be set on the concrete preparation vehicle 3. In this case, a longer water supply pipeline is directly connected to directly supply water from the outside of the tunnel to the inside of the tunnel.

[0034] In this embodiment, the concrete conveying mechanism between the mixer 3.2 and the drag pump 4.4 on the concrete preparation vehicle 3 is a movable conveying mechanism, specifically, an articulated conveying mechanism installed on the concrete preparation vehicle 3, more specifically, the conveying mechanism is a screw conveyor 3.1, and the articulation axis is along the left and right direction of the concrete preparation vehicle 3. At this time, when it is not necessary to feed materials between the drag pump 4.4 and the mixer 3.2, the screw conveyor can be folded up, which can make the grouping more flexible. When it is necessary to convey concrete, the screw conveyor moves in the direction close to the drag pump 4.4. When the concrete conveying mechanism is a screw conveyor, during the process of conveying concrete, the concrete can also be secondary mixed in the screw conveyor to ensure the mixing degree of the concrete. In addition, the screw conveyor 3.1 is arranged upwardly and tilted, and the self-weight of the concrete, that is, the tendency to fall downward, is used to ensure the uniformity of the secondary mixing.

[0035] Of course, those skilled in the art will appreciate that the screw conveyor 3.1 may also be installed on a concrete placing vehicle, so that it can be close to the concrete preparation vehicle when moving, and receive concrete from the concrete preparation vehicle.

[0036] Regarding the swing of the screw conveyor 3.1, a driving device for driving the swing thereof may be provided, such as a hydraulic cylinder, an electric push rod, etc. Alternatively, the driving device may not be provided, and the construction site personnel may use a manual tool to push the screw conveyor 3.1 to swing, and then use a pull rod to keep the screw conveyor 3.1 at a certain angle.

[0037] In other embodiments, the concrete conveying mechanism may also be a fixed conveying mechanism, such as a scraper chain, a belt conveyor, or a screw conveyor fixed on a concrete preparation vehicle, and the other end of the scraper chain, the belt conveyor, or the screw conveyor can be overlapped above the drag pump. For a fixed conveying mechanism, the same mixing effect can be achieved by selecting a screw conveyor. In addition, the screw conveyor can also be arranged tilted upward.

[0038] The movable concrete conveying mechanism is not limited to the articulated type. In other embodiments, the concrete conveying mechanism can also be a forward and backward translation type conveying mechanism, which can also be installed on a concrete preparation vehicle or a concrete distribution vehicle, and can be connected to the concrete distribution vehicle or the concrete preparation vehicle by moving the conveying mechanism forward and backward. However, the articulated arrangement is a more space-saving option.

[0039] Specific embodiment 2 of the tunnel repair concrete preparation and pouring group provided by the utility model:

[0040] On the basis of Example 1, the tunnel repair concrete preparation and pouring group in this embodiment also includes an auxiliary operation vehicle 5, such as Figure 4 As shown, the auxiliary work vehicle 5 is provided with an auxiliary hanging basket platform for the staff to carry out auxiliary material distribution and vibration operations. The auxiliary hanging basket platform includes a hanging basket 5.1 and a mechanical arm 5.2. The specific form of the mechanical arm 5.2 is not limited, and it can specifically include pitch, rotation, telescopic and other degrees of freedom, and can send the staff in the hanging basket 5.1 to the working position. Such an independent auxiliary work vehicle 5 can avoid the auxiliary hanging basket platform from affecting other arrangements such as the drag pump or the material distribution machine on the one hand, and can also arrange a more flexible auxiliary hanging basket platform on the other hand. The auxiliary hanging basket platform in this embodiment is installed on the auxiliary work vehicle 5 through a moving seat 5.3, and the auxiliary work vehicle is provided with a track 5.5 for the moving seat 5.3 to move. The cooperation between the moving seat 5.3 and the track 5.5 can be slid forward and backward, or rolling wheels can be set on the moving seat 5.3, and the moving seat rolls along 5.5. In addition, if space permits, the second generator 5.4 is also configured on the auxiliary work vehicle 5 in this embodiment to ensure the power supply of the group.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tunnel repair concrete preparation and pouring group, comprising a storage bin, a mixer, a trailer pump and a concrete placing boom, wherein the trailer pump is used to pump concrete to the concrete placing boom, characterized in that: It also includes a concrete preparation vehicle and a concrete distribution vehicle. The storage bin and the mixer are arranged on the concrete preparation vehicle. The trailer pump and the distribution machine are arranged on the concrete distribution vehicle. A concrete conveying mechanism is arranged between the mixer and the trailer pump. The concrete conveying mechanism is used for receiving concrete discharged from the mixer and conveying the concrete to the trailer pump.

2. The tunnel repair concrete preparation and pouring group according to claim 1, characterized in that: The concrete conveying mechanism is movably mounted on one of the concrete preparation vehicle and the concrete distribution vehicle, and is movable in a direction approaching the other of the concrete distribution vehicle and the concrete preparation vehicle.

3. The tunnel repair concrete preparation and pouring group according to claim 2, characterized in that: The concrete conveying mechanism is hinged on the concrete preparation vehicle or the concrete distribution vehicle, and the hinge axis extends along the left and right directions of the concrete preparation vehicle or the concrete distribution vehicle.

4. The tunnel repair concrete preparation and pouring formation according to any one of claims 1 to 3, characterized in that: The concrete conveying mechanism is a screw conveyor.

5. The tunnel repair concrete preparation and pouring group according to claim 4, characterized in that: The screw conveyor is arranged on the concrete preparation vehicle in an inclined upward direction.

6. The tunnel repair concrete preparation and pouring group according to any one of claims 1 to 3, characterized in that: The concrete placing machine comprises a placing folding arm. A placing machine mounting seat is arranged on the concrete placing vehicle, and the placing folding arm is swingably mounted on the placing machine mounting seat.

7. The tunnel repair concrete preparation and pouring group according to claim 6, characterized in that: The end of the material placing folding arm is installed on the material placing machine mounting seat, and the material placing machine mounting seat is also provided with a counterweight unit for balancing the material placing folding arm torque.

8. The tunnel repair concrete preparation and pouring group according to claim 6, characterized in that: The mounting seat of the material placing machine is a swivel seat, and the rotation axis of the swivel seat extends in the vertical direction.

9. The tunnel repair concrete preparation and pouring group according to any one of claims 1 to 3, characterized in that: The tunnel repair concrete preparation and pouring formation also includes an auxiliary work vehicle, on which an auxiliary hanging basket platform is provided for the movement of workers.

10. The tunnel repair concrete preparation and pouring group according to claim 9, characterized in that: The auxiliary hanging basket platform is installed on the auxiliary working vehicle through a moving seat that can move forward and backward, and the auxiliary working vehicle is provided with a track for the moving seat to move.

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