A concrete transportation device and construction method for small-section tunnels

Abstract

An embodiment of the present invention discloses a concrete transportation device for small-section tunnels, which relates to the technical field of construction engineering. Among them, the concrete transportation device includes a movable vehicle body, a mud storage tank, a stirring structure, and a concrete conveying pump structure. The mud storage tank has a stirring area, and a feed inlet is arranged at the front end of the mud storage tank, and a discharge outlet is arranged at the rear end. The stirring structure includes a driving component and a spiral stirring paddle connected to the driving component. The concrete conveying pump structure is located directly below the discharge outlet and is used to transfer the concrete discharged from the discharge outlet to the construction operation surface. Among them, there is a clearance space between the outer end of the spiral stirring paddle and the inner peripheral side of the mud storage tank. In the embodiment of the present invention, both the mud storage tank and the concrete conveying pump structure can be transported into the small-section tunnel, thereby reducing the transportation distance of the concrete in the conveying pipe, improving the transportation efficiency of the concrete. At the same time, the stirring structure can stir the concrete and reduce the phenomenon of concrete solidification during transportation.

Description

Technical Field

[0001] The present invention relates to the field of construction, and particularly to a concrete transportation device for small-section tunnels. Background Art

[0002] At present, with the increase of water diversion projects across the country, the construction of tunnels has gradually increased, especially for small-section tunnels.

[0003] Among them, the existing concrete transportation and construction equipment on the market, such as ordinary concrete transport tank trucks and conventional concrete pump trucks, cannot meet the construction requirements of small-section tunnels. Specifically, in the application scenario of ordinary concrete, the ordinary concrete transport tank truck transports concrete to the tunnel entrance, and then the conventional concrete pump truck pumps it to the construction operation surface.

[0004] Since the ordinary concrete transport tank truck cannot enter the small-section tunnel, the length of the conveying pipe on the concrete pump truck is relatively long, which reduces the applicability of the concrete transportation equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a concrete transportation device and construction method for small-section tunnels, aiming to solve the problem that the existing concrete transportation equipment is not suitable for the construction of small-section tunnels.

[0006] To solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: providing a concrete transportation device for small-section tunnels, including:

[0007] A movable vehicle body;

[0008] A sludge storage tank, which is horizontally fixed on the movable vehicle body and has a stirring area inside. An inlet is provided at the front end of the sludge storage tank and is communicated with the stirring area, and an outlet is provided at the rear end and is communicated with the stirring area;

[0009] A stirring structure, which includes a driving component fixed at one end of the sludge storage tank and a spiral stirring paddle located in the stirring area and connected to the driving component, for stirring the concrete in the stirring area and driving the concrete to discharge from the outlet;

[0010] A concrete delivery pump structure, which is located directly below the outlet and is used to transfer the concrete discharged from the outlet to the construction operation surface;

[0011] Wherein, there is a clearance space between the outer end of the spiral stirring paddle and the inner peripheral side of the sludge storage tank.

[0012] Through the above technical solution, the mixing structure mixes the concrete located in the mixing area. The concrete will move toward the discharge port during the mixing process. During transportation, since the discharge port is in a closed state, the concrete will flow back through the avoidance space, so that the concrete in the mixing area is always in a moving state. Since the concrete transportation equipment can transport concrete into a small-section tunnel, the length of the delivery pipe on the concrete pump structure is shortened, which can effectively improve construction efficiency.

[0013] Furthermore, the mud storage tank is cylindrical, and the spiral stirring paddle includes:

[0014] A transmission shaft, wherein the rotation axis of the transmission shaft coincides with the geometric center line of the mud storage tank, one end of the transmission shaft is connected to the drive assembly, and the other end passes through and extends into the stirring area;

[0015] The stirring blade is fixed on the outer peripheral side of the transmission shaft and spirally extends along the length direction of the transmission shaft.

[0016] Through the above technical solution, the drive assembly drives the transmission shaft to rotate, driving the mixing blades to rotate, thereby mixing the concrete. When the discharge port is in the open state, the concrete is driven by the mixing blades to be discharged from the discharge port and enter the concrete delivery pump structure, and is then transported to the tunnel working face.

[0017] Furthermore, the stirring blade includes a first stirring section and a second stirring section arranged in sequence;

[0018] The stirring structure further comprises:

[0019] A sealing tube, the sealing tube being wrapped around the outside of the transmission shaft, the two ends of the sealing tube being fixedly mounted on the inner sides of the two ends of the stirring area, and an installation space being formed between the inner circumference of the sealing tube and the outer circumference of the transmission shaft;

[0020] a first connecting assembly, wherein the first stirring section is connected to the transmission shaft via the first connecting assembly, and is used to drive the first stirring section to rotate at a first speed, and the sealing tube is provided with a first clearance hole for the first connecting assembly to pass through;

[0021] a second connecting assembly, wherein the second stirring section is connected to the transmission shaft via the second connecting assembly, and is used to drive the second stirring section to rotate at a second speed, and the sealing tube is provided with a second clearance hole for the second connecting assembly to pass through;

[0022] The first speed is different from the second speed.

[0023] Through the above technical solution, since the rotation speeds of the first stirring section and the third stirring section are different, when the concrete moves from the first stirring section to the second stirring section, it will be driven by different pressures, resulting in the separation and collision of the concrete, thereby improving the stirring effect.

[0024] Further, the first connection assembly includes:

[0025] A first sun gear coaxially fixed on the transmission shaft;

[0026] A first planet gear rotatably connected to the inner peripheral side of the sealing pipe through a rotating shaft, and the first planet gear is meshed with the first sun gear;

[0027] A first gear ring passing through the first relief hole and fixedly connected to the inner end of the first stirring section, and the first gear ring is meshed with the first planet gear.

[0028] Through the above technical solution, the transmission shaft drives the first sun gear, the first planet gear and the first gear ring to rotate, and the first gear ring drives the first stirring part to rotate, so as to achieve the purpose of stirring and transporting the concrete.

[0029] Further, a plurality of the first planet gears are circumferentially arranged.

[0030] Further, the second connection assembly includes:

[0031] A second sun gear coaxially fixed on the transmission shaft;

[0032] A second planet gear rotatably connected to the inner peripheral side of the sealing pipe through a rotating shaft, and the second planet gear is meshed with the second sun gear;

[0033] A second gear ring passing through the second relief hole and fixedly connected to the inner end of the second stirring section, and the second gear ring is meshed with the second planet gear.

[0034] Wherein, the tooth diameters of the first sun gear and the second sun gear are different, the tooth diameters of the first planet gear and the second planet gear are different, and the tooth diameters of the first gear ring and the second gear ring are different.

[0035] Through the above technical solution, the transmission shaft drives the second sun gear, the second planet gear and the second gear ring to rotate, and the second gear ring drives the second stirring part to rotate, so as to achieve the purpose of stirring and transporting the concrete. Since the tooth diameters of the first sun gear and the second sun gear are different, the tooth diameters of the first planet gear and the second planet gear are different, and the tooth diameters of the first gear ring and the second gear ring are different, the rotation speeds of the first stirring section and the second stirring section are different.

[0036] Further, the stirring blade further includes a third stirring section adjacent to the second stirring section. The third stirring section is connected to the transmission shaft through a third connection assembly, and the third connection assembly has the same structure as the first connection assembly.

[0037] Through the above technical solution, by the combined use of the first stirring section, the second stirring section and the third stirring section, the stirring effect on the concrete can be further improved.

[0038] Further, the tooth diameter of the first sun gear is smaller than that of the second sun gear, the tooth diameter of the first planet gear is larger than that of the second planet gear, and the tooth diameter of the first gear ring is larger than that of the second gear ring.

[0039] Through the above technical solution, the centrifugal force received by the concrete in the middle of the mud storage tank is relatively large, which is beneficial to reducing the interference caused by the concrete to the moving stability of the movable vehicle body during the stirring process.

[0040] Further, each first gear ring is respectively and sealingly connected to the sealing pipe through a first sealing ring, and each second gear ring is respectively and sealingly connected to the sealing pipe through a second sealing ring.

[0041] Through the above technical solution, by the combined use of the first sealing ring and the second sealing ring, the concrete can be prevented from entering the sealing pipe, thereby improving the working stability of the first connection assembly and the second connection assembly.

[0042] The embodiment of the present invention further provides a construction method for a small-section tunnel concrete transportation device, which is applied to the small-section tunnel concrete transportation device as described above, and includes:

[0043] Feeding: Introduce the concrete from the feeding port into the stirring area of the mud storage tank;

[0044] Stirring: Start the driving assembly to drive the spiral stirring paddle to stir the concrete entering the stirring area;

[0045] Transportation: Use the movable vehicle body to transport the mud storage tank into the small-section tunnel;

[0046] Discharging: Place the concrete pump structure on the ground, and control the driving assembly to drive the spiral stirring paddle to make the stirred concrete enter the concrete pump structure from the discharging port, so that the concrete pump structure can transfer the concrete to the construction working surface.

[0047] Through the above technical solution, the concrete is introduced from the feeding port into the stirring area of the sludge storage tank, and the driving component is started to drive the spiral stirring paddle to stir the concrete entering the stirring area, so as to reduce the phenomenon of concrete solidification. The sludge storage tank is transported into the small-section tunnel by the movable vehicle body, the concrete conveying pump structure is placed on the ground, and the driving component is controlled to drive the spiral stirring paddle to make the stirred concrete enter the concrete conveying pump structure from the discharging port, so that the concrete conveying pump structure can transfer the concrete to the construction working surface, thereby effectively improving the construction effect of the small-section tunnel.

[0048] The embodiment of the present invention provides a concrete transportation device and construction method for a small-section tunnel, wherein: the concrete transportation device for the small-section tunnel includes a movable vehicle body, a sludge storage tank, a stirring structure, and a concrete conveying pump structure. The sludge storage tank is horizontally fixed on the movable vehicle body and has a stirring area inside. The front end of the sludge storage tank is provided with a feeding port communicating with the stirring area, and the rear end is provided with a discharging port communicating with the stirring area; the stirring structure includes a driving component fixed at one end of the sludge storage tank and a spiral stirring paddle located in the stirring area and connected with the driving component, which is used to stir the concrete in the stirring area and drive the concrete to discharge from the discharging port; the concrete conveying pump structure is located directly below the discharging port and is used to transfer the concrete discharged from the discharging port to the construction working surface; wherein, there is a clearance space between the outer end of the spiral stirring paddle and the inner peripheral side of the sludge storage tank. The sludge storage tank and the concrete conveying pump structure in the embodiment of the present invention can both be transported into the small-section tunnel, thereby reducing the transportation distance of the concrete in the conveying pipe, improving the transportation efficiency of the concrete. At the same time, the stirring structure can stir the concrete and reduce the phenomenon of concrete solidification during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0050] Figure 1 It is a schematic structural diagram of the concrete transportation device for a small-section tunnel provided in Embodiment 1 of the present invention;

[0051] Figure 2 It is a cross-sectional view of the clearance space in the concrete transportation device for a small-section tunnel provided in Embodiment 1 of the present invention;

[0052] Figure 3It is a partial structure sectional view of the concrete transportation equipment for small-section tunnels provided in the second embodiment of the present invention;

[0053] Figure 4 is Figure 3 an enlarged view of part A in;

[0054] Figure 5 It is an exploded view of the first connection assembly and the second connection assembly in the concrete transportation equipment for small-section tunnels provided in the second embodiment of the present invention.

[0055] Explanation of the markings in the figure:

[0056] 1. Movable vehicle body; 2. Mud storage tank; 21. Stirring area; 22. Feed inlet; 23. Discharge outlet; 24. Avoidance space; 3. Driving assembly; 4. Screw agitator; 41. Transmission shaft; 42. Stirring blades; 43. First stirring section; 44. Second stirring section; 45. Third stirring section; 5. Concrete pump structure; 51. Concrete pump; 52. Delivery pipe; 7. Sealing pipe; 71. First relief hole; 72. Second relief hole; 73. Installation space; 8. First connection assembly; 81. First sun gear; 82. First planet gear; 83. First gear ring; 9. Second connection assembly; 91. Second sun gear; 92. Second planet gear; 93. Second gear ring; 10. First sealing ring; 101. Second sealing ring; 102. Rotating shaft; 103. Connecting seat; 104. Mounting seat; 105. Guide plate. Detailed implementation manners

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0058] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0059] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0060] It should also be further understood that the term "and / or" used in the specification and appended claims of the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0061] An embodiment of the present invention provides a concrete transportation device for a small cross-section tunnel;

[0062] Embodiment 1:

[0063] Combined with Figure 1 and Figure 2 , a concrete transportation device for a small cross-section tunnel includes:

[0064] A movable vehicle body 1;

[0065] A sludge storage tank 2, the sludge storage tank 2 is horizontally fixed on the movable vehicle body 1 and there is a stirring area 21 inside the sludge storage tank 2. An inlet 22 communicating with the stirring area 21 is arranged at the front end of the sludge storage tank 2, and an outlet 23 communicating with the stirring area 21 is arranged at the rear end;

[0066] A stirring structure, the stirring structure includes a driving assembly 3 fixed at one end of the sludge storage tank 2 and a spiral stirring paddle 4 located in the stirring area 21 and connected to the driving assembly 3, which is used to stir the concrete in the stirring area 21 and drive the concrete to discharge from the outlet 23;

[0067] A concrete delivery pump structure 5, the concrete delivery pump structure 5 is located directly below the outlet 23 and is used to transfer the concrete discharged from the outlet 23 to the construction working surface;

[0068] Wherein, there is an avoidance space 24 between the outer end of the spiral stirring paddle 4 and the inner peripheral side of the sludge storage tank 2.

[0069] In this embodiment, the movable vehicle body 1 is a small car for transportation purposes, which can improve the transportation flexibility of concrete and can enter small-section tunnels. Therefore, this application will not be elaborated too much. Among them, the mud storage tank 2 is used to store concrete. The pre-mixed concrete enters the stirring area 21 through the feeding port 22. A guide plate 105 is fixedly arranged in the stirring area 21, which is used to guide the concrete transported to the tail end to the discharge port 23. Since the concrete in the stirring area 21 is prone to solidification during a long transportation process, the embodiment of this application is provided with a stirring structure for stirring the concrete in the stirring area 21 during transportation. It should be noted that although there is a clearance space 24 between the outer end of the spiral stirring paddle 4 of this application and the inner peripheral side of the mud storage tank 2, during the process of adding concrete, the concrete will not fill the entire stirring area 21, so that the concrete moving in one direction can move in the opposite direction through the clearance space 24, thereby achieving the stirring effect of the concrete. In the actual stirring process, the rotation direction of the driving assembly 3 can also be controlled to make the spiral stirring paddle 4 rotate reciprocally. For example, it rotates clockwise and counterclockwise at preset time intervals. This application does not make specific limitations.

[0070] It should be added that both the feeding port 22 and the discharge port 23 are provided with sealing doors for closing their respective openings. The sealing doors can be fixedly connected to the mud storage tank 2 by means of buckles. In this way, during the transportation of concrete, the stirring area 21 is sealed.

[0071] In this embodiment, the concrete conveying pump structure 5 includes a concrete conveying pump 51 and a conveying pipe 52. One end of the conveying pipe 52 is communicated with the output end of the concrete conveying pump 51. In the actual use process, the concrete conveying pump structure 5 is placed on the movable vehicle body 1. After the movable vehicle body 1 transports the mud storage tank 2 into the small-section tunnel, the concrete conveying pump structure 5 is removed from the movable vehicle body 1, and the concrete conveying pump 51 is placed directly below the discharge port 23. The discharge port 23 is opened, and the driving assembly 3 drives the spiral stirring paddle 4 to rotate. The spiral stirring paddle 4 drives the concrete in the stirring area 21 to discharge from the discharge port 23. The concrete falls into the input end of the concrete conveying pump 51 and is transported to the construction operation surface through the concrete conveying pump 51 and the conveying pipe 52. In this way, the construction efficiency of small-section tunnels can be effectively improved.

[0072] During actual use, both the movable vehicle body 1 and the concrete conveying pump structure 5 of this application can be transported into the small-section tunnel, thereby reducing the transportation distance of the concrete in the conveying pipe 52 and improving the transportation efficiency of the concrete.

[0073] Combined with Figure 1 and Figure 2 , in a specific embodiment, the mud storage tank 2 is cylindrical, and the spiral stirring paddle 4 includes:

[0074] A drive shaft 41, the axis of rotation of the drive shaft 41 coincides with the geometric center line of the sludge storage tank 2, one end of the drive shaft 41 is connected to the drive assembly 3, and the other end passes through and extends into the stirring area 21;

[0075] Stirring blades 42, the stirring blades 42 are fixedly arranged on the outer peripheral side of the drive shaft 41 and are spirally extended along the length direction of the drive shaft 41.

[0076] In this embodiment, the drive assembly 3 includes a drive motor and a reduction gearbox both fixedly arranged on the movable vehicle body 1. The output shaft of the drive motor is fixedly connected to the power input end of the reduction gearbox, and the power output end of the reduction gearbox is fixedly connected to one end of the drive shaft 41. Starting the drive motor drives the drive shaft 41 to rotate through the reduction gearbox. Among them, both ends of the drive shaft 41 can be rotatably connected to the sludge storage tank 2 by means of bearings.

[0077] It should be added that an avoidance space 24 is located between the outer end of the stirring blade 42 and the inner peripheral side of the sludge storage tank 2. It should be noted that the present application does not specifically limit the distance between the outer end of the stirring blade 42 and the inner peripheral side of the sludge storage tank 2, as long as the stirring blade 42 can stir the concrete during transportation, so it will not be elaborated.

[0078] The principle of the embodiment of the present application is as follows: The movable vehicle body 1 transports the sludge storage tank 2 and the concrete delivery pump structure 5 into the tunnel, then removes the concrete delivery pump structure 5, opens the discharge port 23, starts the motor, drives the drive shaft 41 to rotate, drives the stirring blade 42 to rotate, so that the concrete enters the concrete delivery pump 51 through the discharge port 23, and the concrete delivery pump 51 transports the concrete to the construction operation surface through the delivery pipe 52, effectively improving the construction efficiency of small-section tunnels.

[0079] Embodiment Two:

[0080] Combined with Figure 3 、 Figure 4 and Figure 5 This embodiment is different from Embodiment One in that the stirring blade 42 includes a first stirring section 43 and a second stirring section 44 arranged in sequence;

[0081] The stirring structure further includes: <{

[0082] A sealing pipe 7, the sealing pipe 7 is wrapped around the outside of the drive shaft 41, both ends of the sealing pipe 7 are fixedly arranged on the inner sides of both ends of the stirring area 21, and an installation space 73 is formed between the inner peripheral side of the sealing pipe 7 and the outer peripheral side of the drive shaft 41;

[0083] The first connecting component 8, the first stirring section 43 is connected to the transmission shaft 41 through the first connecting component 8, and is used to drive the first stirring section 43 to rotate at a first speed. The sealing tube 7 is provided with a first relief hole 71 for the first connecting component 8 to pass through;

[0084] The second connecting component 9, the second stirring section 44 is connected to the transmission shaft 41 through the second connecting component 9, and is used to drive the second stirring section 44 to rotate at a second speed. The sealing tube 7 is provided with a second relief hole 72 for the second connecting component 9 to pass through;

[0085] Wherein, the first speed is different from the second speed.

[0086] In this embodiment, the sealing tube 7 is tubular. Due to the existence of the first relief hole 71 and the second relief hole 72, the sealing tube 7 is divided into three sections. The adjacent sealing tubes 7 are fixedly connected together through the connecting seat 103. Among them, the two sealing tubes 7 at the head and the tail are fixedly connected to the inner sides of both ends of the stirring area 21 by welding. That is to say, the sealing tube 7 and the sludge storage tank 2 always remain relatively fixed. However, due to the existence of the driving motor, the transmission shaft 41 rotates relative to the sealing tube 7. Thus, the first stirring section 43 is driven by the first connecting component 8 to rotate at a first speed, and the second stirring section 44 is driven by the second connecting component 9 to rotate at a second speed. Since the first speed and the second speed are different, in other words, the rotation speeds of the first stirring section 43 and the second stirring section 44 are different. Through such a design, the concrete between the first stirring section 43 and the second stirring section 44 will be subjected to different pressures, that is, the concrete will be pulled, thereby improving the stirring effect of the concrete. At the same time, since the first speed and the second speed are different, a section of the second stirring section 44 close to the first stirring section 43 will not always abut against one end of the first stirring section 43. That is to say, during the stirring process, part of the concrete will contact the front end of the second stirring section 44 and be cut, further increasing the stirring effect on the concrete.

[0087] Combined Figure 3 and Figure 4 , in a specific embodiment, the first connecting component 8 includes:

[0088] The first sun gear 81, the first sun gear 81 is coaxially fixed on the transmission shaft 41;

[0089] The first planet gear 82, the first planet gear 82 is rotatably connected to the inner peripheral side of the sealing tube 7 through the rotating shaft 102, and the first planet gear 82 is meshed and connected with the first sun gear 81;

[0090] The first gear ring 83 is sleeved in the first relief hole 71 and fixedly connected to the inner end of the first stirring section 43. The first gear ring 83 is meshed with the first planet gear 82.

[0091] In a specific embodiment, a plurality of the first planet gears 82 are circumferentially arranged.

[0092] In this embodiment, the first sun gear 81 can be fixedly connected to the transmission shaft 41 by key connection. There are 3 first planet gears 82, and the 3 first planet gears 82 are circumferentially arranged along the transmission shaft 41 to improve the power transmission stability between the first gear ring 83 and the transmission shaft 41. Wherein, the rotation axis of the first gear ring 83 coincides with the geometric center line of the transmission shaft 41. That is to say, during the rotation of the transmission shaft 41, the first sun gear 81 is driven to rotate, the first sun gear 81 drives all the first planet gears 82 to rotate, all the first planet gears 82 drive the first gear ring 83 to rotate, and the first gear ring 83 drives the first stirring section 43 to rotate, so as to realize the stirring of the concrete located on the first stirring section 43.

[0093] In this embodiment, the first stirring section 43 can be fixedly connected to the outer peripheral side of the first gear ring 83 by welding. It should be noted that the opposite sides of the first gear ring 83 abut against the opposite sides of the first relief hole 71 to reduce the situation of concrete entering the sealing pipe 7. In this embodiment, the 3 first planet gears 82 are respectively connected to the sealing pipe 7 through 3 rotating shafts 102. Specifically, the 3 rotating shafts 102 are fixedly connected to the sealing pipe 7 through the same mounting seat 104, and the mounting seat 104 is welded to the inner peripheral side of the sealing pipe 7. One end of the rotating shaft 102 is fixedly arranged on one side of the mounting seat 104, and the other end is rotatably connected to the corresponding first planet gear 82.

[0094] Combined Figure 3 and Figure 4 , in a specific embodiment, the second connection assembly 9 includes:

[0095] A second sun gear 91 coaxially fixed on the transmission shaft 41;

[0096] A second planet gear 92 rotatably connected to the inner peripheral side of the sealing pipe 7 through a rotating shaft 102. The second planet gear 92 is meshed with the second sun gear 91;

[0097] A second gear ring 93 is sleeved in the second relief hole 72 and fixedly connected to the inner end of the second stirring section 44. The second gear ring 93 is meshed with the second planet gear 92.

[0098] Among them, the pitch diameters of the first sun gear 81 and the second sun gear 91 are different, the pitch diameters of the first planet gear 82 and the second planet gear 92 are different, and the pitch diameters of the first gear ring 83 and the second gear ring 93 are different.

[0099] In this embodiment, the second sun gear 91 can be fixedly connected to the transmission shaft 41 by key connection. There are 3 second planet gears 92, and the 3 second planet gears 92 are arranged circumferentially along the transmission shaft 41 to improve the power transmission stability between the second gear ring 93 and the transmission shaft 41. Among them, the axis of rotation of the second gear ring 93 coincides with the geometric center line of the transmission shaft 41. That is to say, during the rotation of the transmission shaft 41, the second sun gear 91 is driven to rotate, the second sun gear 91 drives all the second planet gears 92 to rotate, all the second planet gears 92 drive the second gear ring 93 to rotate, and the second gear ring 93 drives the second stirring section 44 to rotate, so as to realize the stirring of the concrete located on the second stirring section 44.

[0100] In this embodiment, the second stirring section 44 can be fixedly connected to the outer peripheral side of the second gear ring 93 by welding. It should be noted that the opposite sides of the second gear ring 93 abut against the opposite sides of the second relief hole 72 to reduce the situation of concrete entering the sealing pipe 7.

[0101] Since the pitch diameters of the first sun gear 81 and the second sun gear 91 are different, the pitch diameters of the first planet gear 82 and the second planet gear 92 are different, and the pitch diameters of the first gear ring 83 and the second gear ring 93 are different, when the transmission shaft 41 rotates a certain number of turns, the number of rotations of the first planet gear 82 and the second planet gear 92 is different, so that the number of rotations of the first gear ring 83 and the second gear ring 93 is different, so as to achieve the purpose of different rotation speeds of the first stirring section 43 and the second stirring section 44.

[0102] Looking back Figure 3 , in a specific embodiment, the stirring blade 42 further includes a third stirring section 45 adjacent to the second stirring section 44. The third stirring section 45 is connected to the transmission shaft 41 through a third connection component, and the structure of the third connection component is the same as that of the first connection component 8.

[0103] In this embodiment, the first stirring section 43, the second stirring section 44, and the third stirring section 45 are connected in sequence. The concrete in three parts of the stirring area 21 is stirred through the three stirring sections. Among them, the structure of the third connection component is the same as that of the first connection component 8, that is, the rotation speeds of the third stirring section 45 and the first stirring section 43 are the same. During the rotation of the transmission shaft 41, the concrete will be pulled twice during the stirring process, further improving the stirring effect of the concrete.

[0104] In a specific embodiment, the tooth diameter of the first sun gear 81 is smaller than that of the second sun gear 91, the tooth diameter of the first planet gear 82 is larger than that of the second planet gear 92, and the tooth diameter of the first gear ring 83 is larger than that of the second gear ring 93.

[0105] In this embodiment, the rotation speeds of the first stirring section 43 and the third stirring section 45 are relatively slow, while the rotation speed of the second stirring section 44 is relatively fast. Through such a design, the area with a larger centrifugal force is located in the middle of the movable vehicle body 1, thereby improving the moving stability of the movable vehicle body 1.

[0106] Combined with Figure 3 and Figure 4 , in a specific embodiment, each of the first gear rings 83 is hermetically connected to the sealing pipe 7 through a first sealing ring 10, and each of the second gear rings 93 is hermetically connected to the sealing pipe 7 through a second sealing ring 101.

[0107] In this embodiment, each gear ring is hermetically connected to the sealing pipe 7 through two sealing rings, thereby preventing concrete from entering the sealing pipe 7, that is, preventing concrete from interfering with the rotation of each gear and ensuring the rotation stability of the stirring blades 42.

[0108] In this embodiment, the sealing ring is embedded in the inner side wall of the corresponding relief hole and abuts against one side of the corresponding gear ring.

[0109] The principle of the embodiment of the present application is as follows: During the concrete transportation process, since the rotation speeds of the first stirring section 43 and the third stirring section 45 are the same, while the rotation speed of the second stirring section 44 is different, the concrete will be pulled at the connection between the first stirring section 43 and the second stirring section 44, and at the connection between the second stirring section 44 and the third stirring section 45, so as to improve the stirring effect of the concrete and reduce the phenomenon of concrete solidification.

[0110] The embodiment of the present invention also provides a construction method for a small-section tunnel concrete transportation device, which is applied to the small-section tunnel concrete transportation device as described above, and includes:

[0111] S101. Feeding: Introduce concrete from the feeding port 22 into the stirring area 21 of the sludge storage tank 2;

[0112] S102. Stirring: Start the driving assembly 3 to drive the spiral stirring paddle 4 to stir the concrete entering the stirring area 21;

[0113] S103. Transportation: Use the movable vehicle body 1 to transport the sludge storage tank 2 into the small-section tunnel;

[0114] S104, discharging: Place the concrete pump structure 5 on the ground, and control the driving assembly 3 to drive the spiral stirring paddle 4 to make the stirred concrete enter the concrete pump structure 5 from the discharge port 23, so that the concrete pump structure 5 can transfer the concrete to the construction working surface.

[0115] In this embodiment, those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described construction method can refer to the corresponding process in the foregoing embodiment of the transportation equipment, and will not be elaborated herein.

[0116] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A concrete transportation device for small-section tunnels, comprising a movable vehicle body (1), characterized in that, Also includes: A mud storage tank (2), the mud storage tank (2) being transversely fixed on the movable vehicle body (1) and having a stirring area (21) therein, the front end of the mud storage tank (2) being provided with a feed port (22) communicating with the stirring area (21), and the rear end of the mud storage tank (2) being provided with a discharge port (23) communicating with the stirring area (21); A stirring structure, comprising a driving assembly (3) fixedly mounted at one end of the mud storage tank (2), and a screw stirring paddle (4) located in the stirring area (21) and connected to the driving assembly (3), for stirring the concrete in the stirring area (21) and driving the concrete to be discharged from the discharge port (23); A concrete delivery pump structure (5), the concrete delivery pump structure (5) is located directly below the discharge port (23) and is used to transfer the concrete discharged from the discharge port (23) to the construction work surface; There is an escape space (24) between the outer end of the spiral stirring blade (4) and the inner peripheral side of the mud storage tank (2). The mud storage tank (2) is cylindrical, and the spiral stirring paddle (4) comprises: a transmission shaft (41), the rotation axis of the transmission shaft (41) coincides with the geometric center line of the mud storage tank (2), one end of the transmission shaft (41) is connected to the driving assembly (3), and the other end is passed through and extends into the stirring area (21); A stirring blade (42) is fixed on the outer peripheral side of the transmission shaft (41) and spirally extends along the length direction of the transmission shaft (41). The stirring blade (42) includes a first stirring section (43) and a second stirring section (44) arranged in sequence; The stirring structure further comprises: A sealing tube (7), the sealing tube (7) being wrapped around the outside of the transmission shaft (41), the two ends of the sealing tube (7) being fixedly mounted on the inner sides of the two ends of the stirring area (21), and an installation space (73) being formed between the inner circumference of the sealing tube (7) and the outer circumference of the transmission shaft (41); a first connecting assembly (8), wherein the first stirring section (43) is connected to the transmission shaft (41) via the first connecting assembly (8), and is used to drive the first stirring section (43) to rotate at a first speed; and the sealing tube (7) is provided with a first clearance hole (71) for the first connecting assembly (8) to pass through; a second connecting assembly (9), wherein the second stirring section (44) is connected to the transmission shaft (41) via the second connecting assembly (9), and is used to drive the second stirring section (44) to rotate at a second speed; and the sealing tube (7) is provided with a second clearance hole (72) for the second connecting assembly (9) to pass through; The first speed is different from the second speed. The first connecting component (8) comprises: a first sun gear (81), the first sun gear (81) being coaxially fixed on the transmission shaft (41); The first planetary gear (82) is rotationally connected to the inner peripheral side of the sealing pipe (7) through a rotating shaft (102), and the first planetary gear (82) is meshed with the first sun gear (81); The first gear ring (83) is disposed through the first relief hole (71) and fixedly connected to the inner end of the first stirring section (43), and the first gear ring (83) is meshed with the first planetary gear (82); The second connection assembly (9) includes: a second sun gear (91) coaxially fixed on the transmission shaft (41); The second planetary gear (92) is rotationally connected to the inner peripheral side of the sealing pipe (7) through a rotating shaft (102), and the second planetary gear (92) is meshed with the second sun gear (91); The second gear ring (93) is disposed through the second relief hole (72) and fixedly connected to the inner end of the second stirring section (44), and the second gear ring (93) is meshed with the second planetary gear (92), wherein, the tooth diameter of the first sun gear (81) is different from that of the second sun gear (91), the tooth diameter of the first planetary gear (82) is different from that of the second planetary gear (92), and the tooth diameter of the first gear ring (83) is different from that of the second gear ring (93); The stirring blade (42) further includes a third stirring section (45) adjacent to the second stirring section (44), and the third stirring section (45) is connected to the transmission shaft (41) through a third connection assembly, and the structure of the third connection assembly is the same as that of the first connection assembly (8); The tooth diameter of the first sun gear (81) is smaller than that of the second sun gear (91), the tooth diameter of the first planetary gear (82) is larger than that of the second planetary gear (92), and the tooth diameter of the first gear ring (83) is larger than that of the second gear ring (93).

2. The concrete transportation equipment for small-section tunnels according to claim 1, wherein: A plurality of the first planetary gears (82) are circumferentially arranged.

3. The concrete transportation equipment for small-section tunnels according to claim 1, characterized in that: Each of the first gear rings (83) is hermetically connected to the sealing pipe (7) through a first sealing ring (10), and each of the second gear rings (93) is hermetically connected to the sealing pipe (7) through a second sealing ring (101).

4. A construction method for a concrete transportation device for small-section tunnels, which is applied to the concrete transportation device for small-section tunnels as described in any one of claims 1-3, characterized in that, Including: Feeding: Concrete is introduced into the stirring area (21) of the sludge storage tank (2) from the feeding port (22); Stirring: The driving assembly (3) is started to drive the spiral stirring paddle (4) to stir the concrete entering the stirring area (21); Transporting: The sludge storage tank (2) is transported into a small-section tunnel by using a movable vehicle body (1); Discharging: The concrete delivery pump structure (5) is placed on the ground, and the driving assembly (3) is controlled to drive the spiral stirring paddle (4) to make the stirred concrete enter the concrete delivery pump structure (5) from the discharging port (23), so that the concrete delivery pump structure (5) can transfer the concrete to the construction working surface.

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