A maintenance trolley

Abstract

The present invention provides a maintenance trolley, including a traveling trolley and an arm mechanism and a spray mechanism arranged on the traveling trolley; the arm mechanism includes a fixed arm and a telescopic arm, one end of the fixed arm is connected to the traveling trolley, and the other end is connected to the telescopic arm through a telescopic driving member; the spray mechanism includes an arch frame and a spray head, and the arch frame is rotatably arranged on the telescopic arm to realize the unfolding and folding of the arch frame. In the present invention, autonomous walking in the tunnel is realized by arranging a traveling trolley; the arm mechanism is used to connect the traveling trolley and the spray mechanism and is arranged as a telescopic structure, so that it can adapt to the maintenance needs of tunnels of different heights, and can reduce the occupied space of the whole machine by retracting during conversion; the arch frame in the spray mechanism is arranged as a foldable or unfoldable structure, so that it can reduce the occupied space of the whole machine by retracting during conversion, so that the lining trolley can be maintained by the maintenance trolley without transferring, thereby improving construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel maintenance, and in particular to a maintenance trolley. Background Art

[0002] As the proportion of railway and highway tunnels increases, the requirements for tunnel construction quality are also getting higher and higher. During the pouring of the tunnel secondary lining, the strength of the concrete directly determines the safety and life of the tunnel. As the preparatory load-bearing structure of the tunnel, the secondary lining plays a great role in durability. In order to meet the use function of the tunnel, the secondary lining concrete structure of the tunnel is becoming more and more important.

[0003] In the prior art, maintenance during the construction of the secondary lining concrete of the tunnel generally adopts manual intermittent watering maintenance. Its main disadvantages are that the maintenance is not comprehensive, the maintenance is not timely, the maintenance is uneven, and there is a lot of water accumulation in the maintenance area, which can easily cause cracks in the secondary lining concrete structure and seriously affect the driving safety of the tunnel.

[0004] At present, the chassis of tunnel maintenance vehicles generally uses steel wheels and tracks for travel. This structure is inconvenient to travel and needs to rely on tracks, and tracks need to be laid for forward movement; the spray arch adopts an integral structure and cannot change the radius or adjust the height according to the tunnel section size, and the adaptability range is small; during spray maintenance, the entire trolley must move forward and backward together, and partial forward and backward movement cannot be achieved; the bracket cannot be retracted and retracted, resulting in it being unable to pass under the second lining trolley in front, and the second lining section in the initial stage cannot be maintained in time. Summary of the invention

[0005] The present invention provides a maintenance trolley, which comprises a traveling trolley and an arm mechanism and a spray mechanism arranged on the traveling trolley;

[0006] The arm mechanism comprises a fixed arm and a telescopic arm, one end of the fixed arm is connected to the traveling trolley, and the other end is connected to the telescopic arm through a telescopic driving member;

[0007] The spray mechanism comprises an arch frame and a spray head arranged on the arch frame. The arch frame can be rotatably arranged on the telescopic arm to realize the folding and opening of the arch frame.

[0008] Optionally, the present invention further comprises a slide mechanism, and the fixed arm is movably arranged on the traveling trolley through the slide mechanism.

[0009] Optionally, the slide mechanism includes a displacement drive member and a slide; the traveling trolley is provided with a sliding track matching the slide; and the slide is slidably arranged on the sliding track through the displacement drive member.

[0010] Optionally, the arch frame of the present invention includes a plurality of arcuate arch segments arranged in series, and adjacent arcuate arch segments are hinged to each other and provided with water channel connecting devices.

[0011] Optionally, in the present invention, the cross section of the arch frame is arranged in a manner of decreasing from the top of the arc toward both ends.

[0012] Optionally, the shower heads are arranged in a manner of increasing in number from the top of the arc toward both ends.

[0013] Optionally, in the present invention, the axis of the sprinkler head is arranged at an angle with the longitudinal direction of the tunnel; the angle is set to be 30°-60°.

[0014] Optionally, the present invention comprises a traveling trolley including a frame and a traveling mechanism arranged on the frame, and the sliding track is arranged on the frame; the traveling mechanism comprises a main driving wheel assembly and a driven wheel assembly arranged in parallel.

[0015] Optionally, the telescopic arm is further provided with a connecting beam assembly, the connecting beam assembly includes a cross beam, a strut and a rotating drive member; the cross beam is fixedly connected to one end of the telescopic arm away from the fixed arm; a strut is hinged on the cross beam, and the strut is connected to the arch frame; the rotating drive member is connected to the cross beam at one end and to the strut at the other end to drive the strut to rotate relative to the cross beam.

[0016] Optionally, the present invention further comprises a water tank assembly and a temperature control system, wherein the water tank assembly is arranged in the frame and is used to supply water to the sprinkler head; the temperature control system is used to control the outlet water temperature of the sprinkler head.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention realizes that the maintenance trolley can move freely in the tunnel by setting a traveling trolley; the arm mechanism is used to connect the traveling trolley and the spray mechanism, and the arm mechanism is set as a retractable structure, so that the maintenance trolley can adapt to the maintenance needs of tunnels at different heights, and the space occupied by the whole machine can be reduced by retracting the arm mechanism during transfer, which is convenient for transfer; the arch frame in the spray mechanism is set as a foldable or openable structure, so that it can be folded during transfer to reduce the space occupied by the whole machine, so that it can directly pass through the lining trolley to maintain the tunnel just lined at its front end, thereby overcoming the maintenance blind spot of the existing maintenance trolley and improving the construction efficiency.

[0019] (2) The present invention arranges a slide and a displacement drive on the moving trolley so that the slide can drive the arm mechanism and the spray mechanism to move relative to the moving trolley. During the maintenance process, the moving trolley does not move, and the slide drives the spray mechanism to perform maintenance. Compared with the maintenance in which the moving trolley drives the spray mechanism to move, the maintenance can better adapt to different ground surfaces and the maintenance will be smoother.

[0020] (3) The present invention arranges a support rod and a rotating driving member on the cross beam, so that the arch frame arranged on the support rod can be driven by the rotating driving member to approach or move away from the cross beam, thereby realizing the folding or opening of the arch frame relative to the cross beam.

[0021] (4) The present invention configures the arch frame to be composed of a plurality of hinged arc-shaped arch segments so that the arc-shaped arch segments can rotate relative to each other, thereby changing the curvature of the entire arch frame to adapt to tunnel sections of different sizes; and waterway connecting pieces are provided between adjacent arc-shaped arch segments to keep the waterway unobstructed.

[0022] (5) The present invention can make the connection between the arch and the support rod, i.e., the top of the arc, more stable by setting the cross-section of the arch to decrease gradually from the top of the arc to the two ends. At the same time, the weight of the two ends of the arch is reduced, thereby reducing the inertia of the two ends and preventing the arch from swinging excessively.

[0023] (6) The present invention arranges the sprinkler heads in an increasing manner from the top of the arc toward both ends, thereby preventing the curing water sprayed from the top of the arch from flowing down the secondary lining surface in time and forming a water curtain, thereby reducing the waste of sprinkler water. The sprinkler heads on both sides of the arch are large in number, which can effectively cause the sprinkler water on the side of the arch to form flowing water on the side of the secondary lining, thereby curing the lower side of the secondary lining that is not directly sprayed, thereby improving the curing effect.

[0024] (7) The present invention can improve the utilization rate of curing water and reduce the rebound rate of curing water sprayed onto the secondary lining surface by setting the angle between the axis of the sprinkler head and the longitudinal direction of the tunnel to 30°-60°.

[0025] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 This is a schematic front view of a maintenance trolley in an unfolded state according to an embodiment of the present invention;

[0028] Figure 2 1 is a left side schematic diagram of a maintenance trolley in an unfolded state according to an embodiment of the present invention;

[0029] Figure 3 is a schematic front view of a maintenance trolley in a folded state according to an embodiment of the present invention;

[0030] Figure 4 yes Figure 1 Schematic diagram of the connection between the traveling trolley and the slide mechanism;

[0031] Figure 5 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0032] Figure 6 yes Figure 1 Schematic diagram of the structure of the middle sprinkler head (where ← indicates the longitudinal direction of the tunnel).

[0033] in:

[0034] 1. Traveling trolley, 1.1. Frame, 1.2. Main driving wheel assembly, 1.3. Driven wheel assembly, 1.4. Sliding track;

[0035] 2. Slide mechanism, 2.1. Slide;

[0036] 3. Boom mechanism, 3.1. Fixed arm, 3.2. Telescopic arm, 3.3. Connecting beam assembly, 3.3.1. Crossbeam, 3.3.2. Support rod, 3.3.3. Rotating drive member;

[0037] 4. Sprinkler mechanism, 4.1. Arch frame, 4.2. Water tank assembly, 4.3. Sprinkler head. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present invention more clear and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings of the present invention are all simplified and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the implementation of the present invention; the "number" mentioned in the present invention is not limited to the specific number in the examples in the accompanying drawings; the directions or positional relationships indicated by "front", "middle", "back", "left", "right", "up", "down", "top", "bottom", "middle", etc. mentioned in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor can they be understood as limitations on the present invention.

[0039] The present embodiment:

[0040] See also Figures 1 to 6 As shown, a maintenance trolley includes a traveling trolley 1, an arm mechanism 3 and a spray mechanism 4;

[0041] The traveling trolley 1 comprises a traveling mechanism and a frame 1.1, wherein the traveling mechanism is arranged at the bottom of the frame 1.1;

[0042] The arm mechanism 3 comprises a fixed arm 3.1 and a telescopic arm 3.2, one end of the fixed arm is connected to the traveling trolley 1, and the other end is connected to the telescopic arm through a telescopic drive member, and preferably: the telescopic drive member is configured as a cylinder structure or a wire rope traction mechanism;

[0043] The spray mechanism 4 comprises an arch frame 4.1 and a spray head 4.3. The arch frame 4.1 is arranged on one end of the telescopic arm 3.2 away from the fixed arm 3.1. The spray head 4.3 comprises a plurality of pieces distributed on the arch frame 4.1.

[0044] Preferably, the traveling mechanism comprises a main driving wheel assembly 1.2 and a driven wheel assembly 1.3 which are arranged in parallel along the running direction of the traveling trolley 1.

[0045] As a further embodiment of the present invention: it also includes a slide mechanism 2, and the fixed arm 3.1 is movably arranged on the frame 1.1 of the traveling trolley 1 through the slide mechanism 2. Preferably, the slide mechanism 2 includes a displacement drive member and a slide 2.1; the frame 1.1 of the traveling trolley 1 is provided with a sliding track 1.4 matching the slide 2.1; the slide 2.1 is slidably arranged on the sliding track 1.4 through the displacement drive member.

[0046] Preferably, the displacement range of the slide 2.1 on the slide rail 1.4 is preferably set to 6 meters, and its displacement direction is consistent with the running direction of the traveling trolley 1. In this embodiment, the traveling mechanism is configured as a front wheel assembly and a rear wheel assembly, and the frame and the like occupy a small space as a whole, and the transfer is convenient.

[0047] As a further solution of the present invention: in order to increase the spraying range during a single maintenance, the arch frame 4.1 is preferably provided with two mutually parallel pieces.

[0048] Preferably, the distance between the two arches 4.1 is preferably set to 6 meters. In this embodiment, the sliding range of the slide mechanism 2 is set to 6 meters, and the distance between the two arches 4.1 in the spray mechanism 4 is also set to 6 meters, so that the maintenance trolley can maintain a range of 12 meters at a time; the maintenance trolley has the characteristics of flexible vehicle passage and a wide range of single maintenance.

[0049] As a further embodiment of the present invention: in order to realize the connection between the two arches 4.1 and the telescopic arm 3.2, the telescopic arm 3.2 is also provided with a connecting beam assembly 3.3, the connecting beam assembly 3.3 includes a cross beam 3.3.1, a strut 3.3.2 and a rotating drive member 3.3.3, the arch 4.1 is fixedly connected to the strut 3.3.2; the cross beam 3.3.1 is preferably fixedly connected to one end of the telescopic arm 3.2 away from the fixed arm 3.1 in the middle part, and the two ends of the cross beam 3.3.1 are preferably fixedly connected in the horizontal direction by self-rotation. The two ends of the crossbeam 3.3.1 are preferably hinged to the struts 3.3.2 provided on the two arches 4.1; the rotating drive member 3.3.3 is preferably provided with two pieces, one end of each of the two rotating drive members 3.3.3 is connected to the crossbeam 3.3.1, and the other end is connected to the two struts 3.3.2, so that the two arches 4.1 are driven by the rotating drive member 3.3.3 to rotate relative to the crossbeam 3.3.1, and the two arches 4.1 are folded or opened relative to the telescopic arm 3.2. The folded state of the arch 4.1 cooperates with the contracted state of the arm mechanism 3, which can reduce the space occupied by the maintenance trolley to a very small size, making it convenient for the maintenance trolley to pass under other large engineering vehicles such as the secondary lining trolley, so as to achieve timely maintenance of the secondary lining surface.

[0050] Preferably, the rotary drive member 3.3.3 is configured as a hydraulic cylinder, a gear drive structure or a worm gear drive structure adaptively connected to the cross beam 3.3.1 and the support rod 3.3.2.

[0051] As a further embodiment of the present invention: in order to achieve adjustable curvature of the arch frame 4.1, the arch frame 4.1 is formed by a plurality of arcuate arch segments hinged to each other, and a water channel connecting device is provided between each arcuate arch segment, and the water channel connecting device is preferably configured as a water pipe.

[0052] Preferably, in order to avoid wasting water during spraying and better maintain the two end surfaces of the secondary lining, the spray heads 4.3 are arranged in increasing numbers from the top of the arc to the two ends. Since the adhesion of water during top maintenance spraying is less than gravity and it is in a vertical state, the water will fall directly from the top and will also flow down along the secondary lining surface. In order to achieve better and more effective spraying, the number of spray heads 4.3 on the top arc segment is set to be smaller, so as to achieve the water required for the top maintenance of the tunnel surface; the number of spray heads 4.3 on the arc segments at both ends is set to be larger, so that they can fully maintain the two ends of the secondary lining surface, effectively avoiding the shrinkage of the two ends of the secondary lining surface due to lack of water.

[0053] Preferably, to maximize the spraying range of the spray head, the spray head 4.3 is provided with an angle of 30°-60° with the longitudinal direction of the tunnel. Preferably, the central axis of the spray port of the spray head 4.3 is provided with an angle (angle α) of 30°-60° with the longitudinal direction of the tunnel.

[0054] Preferably, in order to effectively ensure the rigidity of the arch frame, the cross-section of the arch frame 4.1 is arranged in a manner of decreasing from the top of the arc to both ends. By increasing the size of the top of the arc of the arch frame 4.1 to ensure the connection rigidity of the arch frame 4.1 and the strength of the arch frame 4.1 itself, the weight of the arch frame 4.1 is better concentrated on the connection point between the arch frame 4.1 and the strut 3.3.2, thereby preventing the horizontal section of the strut 3.3.2 from deformation.

[0055] As a further solution of the present invention: In addition to the above structure, the maintenance trolley provided by the present invention further includes a water tank assembly 4.2 and a temperature control system;

[0056] The water tank assembly 4.2 includes a normal temperature water tank, a heating water tank, a water pump and a water pipe. The normal temperature water tank and the heating water tank are arranged in the vehicle frame 1.1, and the water inlet of the normal temperature water tank is connected to the water source, and the water outlet is connected to the water inlet of the heating water tank. The heating water tank is provided with a heater, and the water outlet of the heating water tank is connected to the spray head 4.3 through a water pipe, and the water pump is arranged on the water pipe. By arranging the water tank assembly to include a structure of a normal temperature water tank and a heating water tank, the water temperature sprayed on the tunnel surface is better matched with the temperature of the tunnel surface lining, so as to prevent the tunnel concrete surface from cracking due to the large difference with the spray water temperature;

[0057] The temperature control system is arranged on the frame 1.1, and includes a plurality of temperature sensors arranged on the maintenance trolley for detecting the temperature of the tunnel maintenance surface and a control mechanism for controlling the outlet temperature of the spray water (such as the control mechanism is composed of a heater and a PLC controller, the heater is used to heat the water in the heating water tank, and the heater and the temperature sensor are both connected to the PLC controller); through the data obtained by real-time detection of the temperature of the tunnel maintenance surface, the control mechanism adjusts and controls the outlet temperature of the sprinkler head in real time, thereby preventing the temperature of the tunnel maintenance surface from being greatly different from the temperature of the spray water, which may cause cracks on the tunnel maintenance surface.

[0058] The process of using the present invention to maintain a tunnel is as follows:

[0059] When the tunnel needs to be maintained: the traveling trolley travels in the tunnel and drives the arm mechanism and the spray mechanism to move synchronously to the tunnel maintenance position; the telescopic arm in the arm mechanism is extended by the telescopic drive member to place the spray mechanism in the best position for tunnel maintenance, thereby ensuring the maintenance effect of the tunnel; the rotating drive member controls the support rod to open relative to the crossbeam, and adjusts the curvature of the arch frame accordingly to keep the curvature of the arch frame consistent with the curvature of the tunnel surface; according to the temperature detected by the temperature sensor on the tunnel maintenance surface, the PLC controller controls the heater to heat the spray water in the heating water tank, and transports it to the spray head for spraying maintenance on the tunnel maintenance surface.

[0060] When transfer is required: the rotating drive member controls the support rod to be retracted relative to the crossbeam; the telescopic arm is retracted under the drive of the telescopic drive member; the traveling trolley moves in the tunnel and drives the arm mechanism and the spray mechanism to move synchronously to the outside of the tunnel or outside the tunnel maintenance position to realize the transfer.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A maintenance trolley, characterized in that: It includes a traveling trolley and an arm mechanism and a spray mechanism arranged on the traveling trolley; The arm mechanism comprises a fixed arm and a telescopic arm, one end of the fixed arm is connected to the traveling trolley, and the other end is connected to the telescopic arm through a telescopic driving member; The spray mechanism includes an arch frame and a spray head arranged on the arch frame, and the arch frame is rotatably arranged on the telescopic arm to realize the unfolding and folding of the arch frame; The telescopic arm is also provided with a connecting beam assembly, which includes a cross beam, a strut and a rotating drive member; the cross beam is fixedly connected to one end of the telescopic arm away from the fixed arm; the cross beam is hinged with a strut, and the strut is connected to the arch frame; one end of the rotating drive member is connected to the cross beam, and the other end is connected to the strut to drive the strut to rotate relative to the cross beam.

2. The maintenance trolley according to claim 1, characterized in that: It also includes a slide mechanism, and the fixed arm is movably arranged on the traveling trolley through the slide mechanism.

3. The maintenance trolley according to claim 2, characterized in that: The slide mechanism comprises a displacement driving member and a slide; the traveling trolley is provided with a sliding track matching the slide; the slide is slidably arranged on the sliding track through the displacement driving member.

4. The maintenance trolley according to any one of claims 1 to 3, characterized in that: The arch frame comprises a plurality of arcuate arch segments arranged in series, and adjacent arcuate arch segments are hinged to each other and are provided with water channel communication devices.

5. The maintenance trolley according to claim 4, characterized in that: The cross section of the arch frame is arranged in a manner of decreasing from the arc-shaped top to both ends.

6. The maintenance trolley according to claim 5, characterized in that: The spray heads are arranged in a manner of increasing in number from the arc-shaped top to both ends.

7. The maintenance trolley according to claim 6, characterized in that: The axis of the sprinkler head is arranged at an angle with the longitudinal direction of the tunnel; the angle is set to be 30°-60°.

8. The maintenance trolley according to claim 3, characterized in that: The traveling trolley comprises a frame and a traveling mechanism arranged under the frame, and the sliding track is arranged on the frame; the traveling mechanism comprises a main driving wheel assembly and a driven wheel assembly arranged in parallel.

9. The maintenance trolley according to claim 8, characterized in that: It also includes a water tank assembly and a temperature control system. The water tank assembly is arranged in the frame and is used to supply water to the sprinkler head; the temperature control system is used to control the outlet water temperature of the sprinkler head.

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