Pipe jacking automatic earth digging device for small pipe diameter

Abstract

The utility model relates to a small pipe diameter pipe jacking automatic earth digging device and relates to the field of earth digging. The small pipe diameter pipe jacking automatic earth digging device comprises a digging and soil collecting mechanism, a power mechanism and a transmission mechanism. The digging and soil collecting mechanism comprises a movable frame that can move along a pipeline, a soil collecting groove installed on the movable frame and a rotating shaft rotatably connected to the movable frame. The outer wall of the rotating shaft is provided with a spiral digging blade. The power mechanism comprises a base, a hydraulic motor movably connected to the base along the axial direction of the rotating shaft and a displacement mechanism for driving the hydraulic motor to move along the axial direction of the rotating shaft. The transmission mechanism is used for transmitting the power of the output shaft of the hydraulic motor to drive the rotating shaft to rotate. The small pipe diameter pipe jacking automatic earth digging device can realize the integrated construction of pipeline digging and soil conveying, greatly reduces the working intensity of construction personnel and improves construction safety.

Description

Technical Field

[0001] This application relates to the field of soil excavation, and more specifically, to an automatic excavation and tunneling device for small-diameter pipe jacking. Background Technology

[0002] In small-diameter pipe jacking construction, due to the narrow pipe diameter (DN600-DN800), workers need to enter the pipe to manually excavate and jack, facing fatal risks such as sudden soil collapse, lack of oxygen, and poisoning from the accumulation of toxic gases. This poses a high risk of construction safety and makes it difficult to meet construction requirements. Utility Model Content

[0003] The purpose of this application is to provide an automatic excavation and tunneling device for small-diameter pipe jacking, which can realize the integrated construction of pipeline excavation and soil transportation, greatly reduce the labor intensity of construction personnel, and improve construction safety.

[0004] This application is implemented as follows:

[0005] This application provides an automatic excavation and tunneling device for small-diameter pipe jacking, comprising:

[0006] The excavation and soil collection mechanism includes a mobile frame that can move along the pipeline, a soil collection trough installed on the mobile frame, and a rotating shaft that is rotatably connected to the mobile frame. The outer wall of the rotating shaft is provided with spiral excavation blades.

[0007] The power mechanism includes a base, a hydraulic motor movably connected to the base along a rotating shaft, and a displacement mechanism for driving the hydraulic motor to move along the rotating shaft.

[0008] The transmission mechanism is used to transmit the power from the output shaft of the hydraulic motor to the drive shaft for rotation.

[0009] In some alternative implementations, the mobile frame includes a bottom frame, four wheels rotatably connected to both sides of the bottom frame, and at least two bearings connected to a pivot. Each bearing is connected to both sides by a connecting rod, and each connecting rod is connected to multiple support rods between itself and the bottom frame. The bottom of the soil collection trough is connected to the top of the bottom frame.

[0010] In some alternative implementations, the soil collection trough is connected to at least one support rod on each side.

[0011] In some alternative implementations, the end of the soil collection trough closest to the power unit is enclosed by a sealing plate.

[0012] In some alternative implementations, a conical drill bit is provided at the end of the shaft away from the power mechanism.

[0013] In some alternative implementations, the mobile frame is connected to a camera via a fixed pole.

[0014] In some alternative implementations, the displacement mechanism includes a movable support connected to the base at its bottom, a rack connected to the movable support, and a drive box slidably sleeved on the rack. The drive box contains a transmission gear that meshes with the rack. The drive box is connected to a rotatable handle, which is connected to the transmission gear. A hydraulic motor is connected to the drive box.

[0015] In some alternative implementations, the displacement mechanism includes a movable support with its bottom connected to a base and a hydraulic cylinder connected to the movable support, the piston rod of the hydraulic cylinder being connected to a hydraulic motor.

[0016] In some alternative implementations, the transmission mechanism includes at least one transmission rod, with its two ends connected to a rotating shaft and a hydraulic motor output shaft, respectively.

[0017] In some alternative implementations, the transmission mechanism includes at least two transmission rods connected coaxially in sequence, with the two transmission rods at both ends respectively connected to a rotating shaft and a hydraulic motor output shaft.

[0018] The beneficial effects of this application are as follows: The small-diameter pipe jacking automatic excavation device provided by this application uses the hydraulic motor and transmission mechanism of the power mechanism to drive the rotating shaft of the excavation and soil collection mechanism to rotate, so that the rotating shaft drives the excavation blades set on the outer wall to rotate to excavate the pipeline. The excavated soil is collected by the soil collection trough of the excavation and soil collection mechanism. At the same time, the displacement mechanism of the power mechanism drives the hydraulic motor to move along the axial direction of the rotating shaft to move the soil collection trough to discharge the collected soil. Thus, the mechanical structure replaces the manual entry of the pipeline for excavation operations, realizing the integrated construction of excavation and soil transportation, greatly reducing the labor intensity of construction personnel and improving construction safety. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the small-diameter pipe jacking automatic excavation device provided in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the excavation and soil collection mechanism in the small-diameter pipe jacking automatic excavation and tunneling device provided in the embodiments of this application;

[0022] Figure 3 A first-view structural schematic diagram of the power mechanism in the small-diameter pipe jacking automatic excavation device provided in the embodiments of this application;

[0023] Figure 4 A second-view structural schematic diagram of the power mechanism in the small-diameter pipe jacking automatic excavation device provided in the embodiments of this application;

[0024] Figure 5 A cross-sectional view of the drive box in the small-diameter pipe jacking automatic excavation device provided in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the structure of a small-diameter pipe jacking automatic excavation device for excavating soil inside a concrete pipe, as provided in another embodiment of this application.

[0026] In the diagram: 100, excavation and soil collection mechanism; 110, mobile frame; 111, bottom frame; 112, wheel; 113, bearing; 114, connecting rod; 115, support rod; 120, soil collection trough; 121, soil receiving part; 130, rotating shaft; 140, excavating blade; 150, sealing plate; 160, drill bit; 170, fixing rod; 180, camera; 200, base; 210, hydraulic motor; 220, mobile support; 230, rack and pinion; 240, drive box; 250, transmission gear; 260, handle; 270, hydraulic cylinder; 300, transmission rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The features and performance of the small-diameter pipe jacking automatic excavation device of this application will be further described in detail below with reference to the embodiments.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown in the figure, this application provides an automatic excavation and tunneling device for small-diameter pipe jacking, including an excavation and soil collection mechanism 100, a power mechanism, and a transmission mechanism; wherein, the excavation and soil collection mechanism 100 includes a movable frame 110 that can move along the pipeline, an arc-shaped soil collection trough 120 installed on the movable frame 110, and a rotating shaft 130 rotatably connected to the movable frame 110, the outer wall of the rotating shaft 130 being provided with a spiral excavation blade 140; the movable frame 110 includes a bottom frame 111, four wheels 112 rotatably connected to both sides of the bottom frame 111, and two bearings 113 connected to the rotating shaft 130, the two sides of the two bearings 113 being connected by a connecting rod 114 respectively, and each connecting rod 114 being connected to the bottom frame 111 by four supports. The rod 115 has two connecting rods 114, one end of which is connected to two support rods 115 on both sides of the bottom frame 111. The middle and the other end of the two connecting rods 114 are connected to the two sides of the bottom frame 111 through inverted L-shaped support rods 115. The bottom of the soil collection trough 120 is connected to the top of the bottom frame 111. The two sides of the soil collection trough 120 are connected to two inverted L-shaped support rods 115. The end of the soil collection trough 120 near the power mechanism is closed by a sealing plate 150. The end of the soil collection trough 120 away from the power mechanism expands outward to form a soil receiving part 121. The end of the rotating shaft 130 away from the power mechanism is provided with a conical drill bit 160. The mobile frame 110 is connected to a camera 180 through a fixing rod 170. The camera 180 is provided with a lighting lamp.

[0036] The power mechanism includes a base 200, a hydraulic motor 210 axially connected to the base 200 and movable along a rotating shaft 130, and a displacement mechanism for driving the hydraulic motor 210 to move axially along the rotating shaft 130. The displacement mechanism includes a movable bracket 220 connected to the base 200 at its four corners by support feet, a rack 230 connected to the movable bracket 220, and a drive box 240 slidably sleeved on the rack 230. The drive box 240 is provided with a transmission gear 250 that meshes with the rack 230. The drive box 240 is connected to a rotatable handle 260. One end of the handle 260 extends into the drive box 240 and is coaxially connected to the transmission gear 250. The hydraulic motor 210 is connected to one end face of the drive box 240.

[0037] The transmission mechanism is used to transmit the power from the output shaft of the hydraulic motor 210 to the drive shaft 130 for rotation. The transmission mechanism includes two transmission rods 300 that are coaxially connected by threads. The opposite ends of the two transmission rods 300 are respectively connected to the shaft 130 and the output shaft of the hydraulic motor 210 by threads.

[0038] The working principle of the small-diameter pipe jacking automatic excavation device provided in this application embodiment is as follows: Figure 1As shown, at the start of construction, the excavation and soil collection mechanism 100, power mechanism, and transmission mechanism are hoisted into the starting well. The base 200 of the power mechanism is fixed inside the starting well, and the first section of concrete pipe is installed on the side wall of the starting well. The moving frame 110 of the excavation and soil collection mechanism 100 is moved into the first section of concrete pipe, so that the conical drill bit 160 at the end of the rotating shaft 130 of the excavation and soil collection mechanism 100 presses against the well wall of the starting well. The two transmission rods 300 of the transmission mechanism are coaxially connected by threads, and the opposite ends of the two transmission rods 300 are respectively connected by threads to the rotating shaft 130 of the excavation and soil collection mechanism 100 and the output shaft of the hydraulic motor 210 of the power mechanism. The hydraulic motor 210 is started to drive the two transmission rods 300 to rotate, so that the two transmission rods 300 drive the rotating shaft 130 to rotate. The drill bit 160 at the end of the rotating shaft 130 and the spiral excavation blades 140 on the outer wall excavate the soil in the well wall of the starting well, and the rotating excavation blades... The excavating blade 140 pushes the excavated soil onto the arc-shaped soil collection trough 120 for collection. A hydraulic jack is used to push the first section of concrete pipe into the soil. During the process of pushing the first section of concrete pipe into the soil, the rotating excavating blade 140 is used to excavate and collect the soil onto the soil collection trough 120. A displacement mechanism drives the hydraulic motor 210 to move axially along the rotating shaft 130, which is connected to the hydraulic motor 210. This causes the rotating shaft 130 and the excavating soil collection mechanism 100 to move axially along the rotating shaft, so that the moving frame 110 of the excavating soil collection mechanism 100 moves along the first section of concrete pipe and exits into the starting shaft. The excavated soil in the soil collection trough 120 is unloaded. A new section of concrete pipe is installed at the tail end of the first section of concrete pipe. Then, the base 200 of the power mechanism is fixed inside the new section of concrete pipe, and the moving frame 110 of the excavating soil collection mechanism 100 is moved into the first section of concrete pipe. The above steps are repeated until all concrete pipes are installed and the pipe jacking is completed.

[0039] When the hydraulic motor 210 is driven by the displacement mechanism to move axially along the rotating shaft 130, the operator rotates the handle 260 to drive the corresponding transmission gear 250 to rotate. Then, through the meshing action of the transmission gear 250 and the rack 230, the transmission gear 250, handle 260 and drive box 240 are driven to move along the rack 230, so that the hydraulic motor 210 connected to the drive box 240 drives the connected rotating shaft 130 and the excavation and soil collection mechanism 100 to move axially along the rotating shaft 130 to achieve the discharge of excavated soil.

[0040] The small-diameter pipe jacking automatic excavation device provided in this application embodiment sets the power mechanism outside the concrete pipe or inside the previous concrete pipe, sets the excavation and soil collection mechanism 100 inside the concrete pipe where the soil needs to be excavated, and uses a transmission mechanism to connect the hydraulic motor 210 of the power mechanism and the rotating shaft 130 of the excavation and soil collection mechanism 100. Thus, the hydraulic motor 210 drives the transmission mechanism and the rotating shaft 130 to rotate the excavation blades 140 set on the outer wall to excavate the pipeline, and the soil collection trough 120 of the excavation and soil collection mechanism 100 collects the excavated soil. At the same time, the displacement mechanism of the power mechanism drives the hydraulic motor 210 and the rotating shaft 130 to move axially to move the soil collection trough 120 to discharge the collected soil. Thus, the mechanical structure replaces manual entry into the pipeline for excavation, realizing integrated construction of excavation and soil transportation, greatly reducing the labor intensity of construction personnel and improving construction safety.

[0041] Among them, one end of each of the two connecting rods 114 is connected to two support rods 115 on both sides of the bottom frame 111. The middle and the other end of each of the two connecting rods 114 are connected to the two sides of the bottom frame 111 through inverted L-shaped support rods 115. The bottom of the soil collection trough 120 is connected to the top of the bottom frame 111, and the two sides of the soil collection trough 120 are connected to two inverted L-shaped support rods 115, which can connect the soil collection trough 120 and the bottom frame 111 into a whole, effectively improving the stability of the soil collection trough 120. The end of the soil collection trough 120 near the power mechanism is connected to a closed plate 1. The 50 is closed to prevent the excavated soil collected in the soil collection trough 120 from falling off; the end of the soil collection trough 120 away from the power mechanism expands outward to form a soil receiving part 121, which can ensure that the soil collection trough 120 can stably collect the excavated soil; the end of the rotating shaft 130 away from the power mechanism is equipped with a conical drill bit 160, which can improve the ability of the rotating shaft 130 to damage the soil when rotating, and improve the excavation efficiency; the mobile frame 110 is connected to a camera 180 through a fixed rod 170, and the camera 180 is equipped with a light, which can facilitate the operators to monitor the excavation situation through the camera 180.

[0042] In other alternative embodiments, the transmission mechanism may also include a transmission rod 300, or three or more transmission rods 300 connected coaxially in sequence.

[0043] In other alternative embodiments, such as Figure 6 As shown, the displacement mechanism may also include a movable support 220 connected to the base 200 at its bottom and a hydraulic cylinder 270 connected to the movable support 220. The piston rod of the hydraulic cylinder 270 is connected to the hydraulic motor 210, thereby driving the piston rod to extend and retract through the hydraulic cylinder 270, which in turn drives the hydraulic motor 210 to move the rotating shaft 130 of the excavation and soil collection mechanism 100 axially through the transmission rod 300 of the transmission mechanism.

[0044] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A small-diameter pipe jacking automatic excavation tunneling device, characterized in that, include: The excavation and soil collection mechanism includes a movable frame that can move along a pipeline, a soil collection trough installed on the movable frame, and a rotating shaft that is rotatably connected to the movable frame. The outer wall of the rotating shaft is provided with helical excavation blades. The power mechanism includes a base, a hydraulic motor movably connected to the base along the axis of rotation, and a displacement mechanism for driving the hydraulic motor to move along the axis of rotation. A transmission mechanism is used to transmit the power from the output shaft of the hydraulic motor to drive the rotating shaft to rotate.

2. The small-diameter pipe jacking automatic earth excavation tunneling device according to claim 1, characterized in that, The mobile frame includes a bottom frame, four wheels rotatably connected to both sides of the bottom frame, and at least two bearings connected to the pivot. Each bearing is connected to both sides by a connecting rod, and each connecting rod is connected to the bottom frame by multiple support rods. The bottom of the soil collection trough is connected to the top of the bottom frame.

3. The small-diameter pipe jacking automatic excavation device according to claim 2, characterized in that, The soil collection trough is connected to at least one of the support rods on each side.

4. The small-diameter pipe jacking automatic excavation device according to claim 1, characterized in that, The end of the soil collection trough near the power mechanism is enclosed by a sealing plate.

5. The automatic excavation and tunneling device for small-diameter pipe jacking according to claim 1, characterized in that, The end of the rotating shaft away from the power mechanism is equipped with a conical drill bit.

6. The small-diameter pipe jacking automatic excavation device according to claim 1, characterized in that, The mobile frame is connected to a camera via a fixed rod.

7. The automatic excavation and tunneling device for small-diameter pipe jacking according to claim 1, characterized in that, The displacement mechanism includes a movable bracket connected to the base at its bottom, a rack connected to the movable bracket, and a drive box slidably sleeved on the rack. The drive box is provided with a transmission gear that meshes with the rack. The drive box is connected to a rotatable handle, which is connected to the transmission gear. The hydraulic motor is connected to the drive box.

8. The small-diameter pipe jacking automatic excavation and tunneling device according to claim 1, characterized in that, The displacement mechanism includes a movable bracket connected to the base at its bottom and a hydraulic cylinder connected to the movable bracket, wherein the piston rod of the hydraulic cylinder is connected to the hydraulic motor.

9. The automatic excavation and tunneling device for small-diameter pipe jacking according to claim 1, characterized in that, The transmission mechanism includes at least one transmission rod, with its two ends connected to the rotating shaft and the output shaft of the hydraulic motor, respectively.

10. The small-diameter pipe jacking automatic excavation device according to claim 1, characterized in that, The transmission mechanism includes at least two transmission rods connected coaxially in sequence, with the two transmission rods at both ends respectively connected to the rotating shaft and the output shaft of the hydraulic motor.

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