Shaftless spiral conveying mechanism of tube push bench

Abstract

The utility model discloses a shaftless spiral conveying mechanism of a tube push bench. The shaftless spiral conveying mechanism consists of a shaftless spiral blade, a speed reducer, a motor and an outer cylinder, the shaftless spiral blade is arranged in the outer cylinder, a connecting shaft is arranged at one end of the shaftless spiral blade and connected with the output end of the speed reducer, the input end of the speed reducer is connected with the output end of the motor, and the speed reducer is connected with a port of the outer cylinder through a bolt; spiral cylinder walls are arranged on the periphery of the shaftless spiral blade at intervals, and the outer diameter of the spiral cylinder walls is consistent with the outer diameter of the shaftless spiral blade; the outer barrel is composed of a plurality of sets of main barrels and auxiliary barrels, and the main barrels are connected through the auxiliary barrels. Fixing holes are formed in the periphery of the auxiliary cylinder, and steel ball supporting structures are arranged in the fixing holes. The shaftless spiral blade is good in supporting performance, small in bearing pressure at the connecting position of the connecting shaft and the speed reducer, small in running resistance, high in stability, not prone to damage and easy to maintain and replace.

Description

Technical Field

[0001] This utility model relates to the field of mud and rock conveying in pipe jacking machines, and in particular to a shaftless screw conveying mechanism for pipe jacking machines. Background Technology

[0002] In the field of pipe jacking machine construction, the shaftless screw conveyor is a key component, responsible for efficiently and stably transporting excavated materials such as soil and gravel out of the working face. Traditional pipe jacking machines use either shafted or shaftless screw conveyors. Traditional shafted screw conveyors, due to the presence of a central shaft, have a relatively small conveying capacity and are ineffective for conveying viscous or easily tangled materials. While shaftless screw conveyors solve these problems, their connection to the reducer is usually direct, resulting in the connection point bearing the significant weight of the shaftless screw blades. This not only increases wear at the connection point but may also affect the stability and lifespan of the entire conveying mechanism. Furthermore, in existing shaftless screw conveyors, the outer wall of the shaftless screw blades rubs against the inner wall of the outer cylinder, generating high friction. This not only increases energy consumption but may also cause vibration and swaying during conveying, affecting the stability and efficiency of the conveying process. Utility Model Content

[0003] The purpose of this invention is to provide a shaftless screw conveyor mechanism for pipe jacking machines that has high load-bearing strength and stable structure.

[0004] The purpose of this utility model is achieved as follows: a shaftless screw conveying mechanism for a pipe jacking machine, which consists of shaftless screw blades, a reducer, a motor, and an outer cylinder;

[0005] The shaftless helical blade is placed inside the outer cylinder. One end of the shaftless helical blade is provided with a connecting shaft, which is connected to the output end of the reducer. The input end of the reducer is connected to the output end of the motor. The reducer is connected to the port of the outer cylinder by bolts. The outer periphery of the shaftless helical blade is provided with a helical cylinder wall at intervals, and the outer diameter of the helical cylinder wall is consistent with the outer diameter of the shaftless helical blade.

[0006] The outer cylinder is composed of multiple main cylinders and auxiliary cylinders, and the main cylinders are connected to each other through auxiliary cylinders; a fixing hole is provided on the periphery of the auxiliary cylinder, and a steel ball support structure is provided in the fixing hole.

[0007] Preferably, the inner diameter of the secondary cylinder is consistent with the outer diameter of the main cylinder, and the inner diameter surface of the secondary cylinder is provided with symmetrical raised steps. After the port of the main cylinder is inserted into the secondary cylinder and abuts against the raised steps, it is fixedly connected to the secondary cylinder by bolts.

[0008] Preferably, a finger-shaped sealing ring is installed on the inner diameter surface of the raised step.

[0009] Preferably, the fixing hole is located on the outer wall of the secondary cylinder between the two sets of raised steps, and the steel ball support structure is fixedly connected to the secondary cylinder by bolts.

[0010] Preferably, the steel ball support structure consists of a base, a cylinder, steel balls, and a pressure cap; the end of the cylinder is provided with a recessed groove, the recessed groove is provided with steel balls, the steel balls are pressed together by the pressure cap, and the pressure cap is fixedly connected to the cylinder by bolts.

[0011] Preferably, the length of the spiral cylinder wall is greater than the length of two pitches of the shaftless spiral blade, and the steel ball support structure is installed on the complete outer peripheral wall of the spiral cylinder wall.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. The outer cylinder is composed of multiple main cylinders and auxiliary cylinders. The main cylinders and auxiliary cylinders are connected by insertion and bolt fixing, making the overall structure more stable and the load-bearing capacity greater. The inner diameter surface of the auxiliary cylinder is provided with symmetrical raised steps, which are fixed after contacting the port of the main cylinder, enhancing the stability of the connection.

[0014] 2. Finger-shaped sealing rings are installed on the inner diameter surface of the raised step, which enhances the sealing between the spiral cylinder wall and the auxiliary cylinder, effectively preventing debris such as mud and stones from entering the steel ball support structure, protecting the operating environment of the steel balls, and extending their service life.

[0015] 3. The steel ball support structure can be disassembled externally, facilitating subsequent maintenance and replacement without dismantling the entire structure; the steel ball support structure provides stable support for the spiral cylinder wall, reducing vibration and swaying during conveying, improving conveying stability, and thus improving conveying efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the connection between the main cylinder and the auxiliary cylinder of this utility model.

[0018] Figure 3 This is a schematic diagram of the steel ball support structure of this utility model.

[0019] The components include: 1. Shaftless spiral blades; 101. Connecting shaft; 2. Reducer; 3. Motor; 4. Outer cylinder; 401. Main cylinder; 402. Auxiliary cylinder; 4021. Fixing hole; 4022. Raised step; 5. Spiral cylinder wall; 6. Steel ball support structure; 601. Base; 602. Cylindrical body; 6021. Recessed groove; 603. Steel ball; 604. Pressure cap; and 7. Finger-type sealing ring. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] It should be noted that in the description of this utility model, 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 utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "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 utility model based on the specific circumstances.

[0023] like Figure 1-3 As shown, a shaftless screw conveyor mechanism for a pipe jacking machine consists of a shaftless screw blade 1, a reducer 2, a motor 3, and an outer cylinder 4.

[0024] A shaftless spiral blade 1 is placed inside the outer cylinder. One end of the shaftless spiral blade 1 is provided with a connecting shaft 101, which is connected to the output end of the reducer 2. The input end of the reducer 2 is connected to the output end of the motor 3. The reducer 2 is connected to the port of the outer cylinder 4 by bolts. Spiral cylinder walls 5 are provided at intervals on the outer periphery of the shaftless spiral blade 1. The outer diameter of the spiral cylinder walls 5 is consistent with the outer diameter of the shaftless spiral blade 1.

[0025] The outer cylinder 4 is composed of multiple main cylinders 401 and auxiliary cylinders 402. The main cylinders 401 are connected to each other through the auxiliary cylinders 402. The auxiliary cylinder 402 has a fixing hole 4021 on its periphery, and a steel ball support structure 6 is provided in the fixing hole 4021.

[0026] like Figure 1-3As shown, the inner diameter of the auxiliary cylinder 402 is consistent with the outer diameter of the main cylinder 401. Symmetrical raised steps 4022 are provided on the inner diameter surface of the auxiliary cylinder 402. After the port of the main cylinder 401 is inserted into the auxiliary cylinder 402 and abuts against the raised steps 4022, it is fixedly connected to the auxiliary cylinder 402 by bolts. The auxiliary cylinder and the main cylinder are inserted and connected, making the overall structure more stable and the load-bearing capacity greater.

[0027] like Figure 1 , 3 As shown, a finger-shaped sealing ring 7 is installed on the inner diameter surface of the raised step 4022; this can enhance the sealing between the spiral cylinder wall and the auxiliary cylinder, prevent mud and stones from entering the interior of the steel ball support structure, and avoid damage to the operation of the steel balls.

[0028] like Figure 2 As shown, the fixing hole 4021 is located on the outer wall of the auxiliary cylinder between the two sets of raised steps 4022. The steel ball support structure 6 is fixedly connected to the auxiliary cylinder 402 by bolts. The steel ball support structure can be disassembled from the outside, which is convenient for subsequent maintenance and replacement without dismantling the entire structure, making it more convenient and faster.

[0029] like Figure 3 As shown, the steel ball support structure 6 consists of a base 601, a cylinder 602, steel balls 603, and a pressure cap 604. The end of the cylinder 602 is provided with a recessed groove 6021, and the steel balls 603 are placed in the recessed groove 6021. The steel balls 603 are pressed together by the pressure cap 604. The pressure cap 604 is fixedly connected to the cylinder 602 by bolts. The steel ball support structure is evenly arranged around the outer periphery of the secondary cylinder. After the steel ball support structure is removed, the steel balls can be replaced individually without replacing the entire support structure, thus reducing the cost of use. The secondary cylinder and the steel ball structure are generally placed at the two ends of the outer cylinder.

[0030] like Figure 1-3 As shown, the length of the spiral cylinder wall 5 is greater than the length of two pitches of the shaftless spiral blade 1. The steel ball support structure 6 is installed on the complete outer peripheral wall of the spiral cylinder wall, which ensures that the steel balls on the steel ball support structure can always contact the spiral cylinder wall when the spiral cylinder wall rotates once.

[0031] The working principle of this utility model is explained as follows: When the motor starts, its output end drives the connecting shaft to rotate through the reducer, thereby driving the shaftless spiral blades to rotate inside the outer cylinder. The rotational motion of the shaftless spiral blades pushes the material forward along the inner wall of the outer cylinder 4. During the conveying process, the steel ball support structure provides stable support for the spiral cylinder wall, reducing vibration and swaying during conveying and improving the stability and efficiency of the conveying. When maintenance or replacement of the steel ball support structure is required, it can be easily and quickly disassembled and replaced, reducing maintenance costs and time. In summary, this shaftless spiral conveying mechanism for pipe jacking machines has the advantages of stable structure, good sealing, convenient maintenance, and high conveying efficiency.

[0032] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A shaftless screw conveyor mechanism for a pipe jacking machine, characterized in that, It consists of shaftless helical blades, a reducer, a motor, and an outer cylinder; The shaftless helical blade is placed inside the outer cylinder. One end of the shaftless helical blade is provided with a connecting shaft, which is connected to the output end of the reducer. The input end of the reducer is connected to the output end of the motor. The reducer is connected to the port of the outer cylinder by bolts. The outer periphery of the shaftless helical blade is provided with a helical cylinder wall at intervals, and the outer diameter of the helical cylinder wall is consistent with the outer diameter of the shaftless helical blade. The outer cylinder is composed of multiple main cylinders and auxiliary cylinders, and the main cylinders are connected to each other through auxiliary cylinders; a fixing hole is provided on the periphery of the auxiliary cylinder, and a steel ball support structure is provided in the fixing hole.

2. The shaftless screw conveyor mechanism for a pipe jacking machine according to claim 1, characterized in that, The inner diameter of the secondary cylinder is consistent with the outer diameter of the main cylinder. The inner diameter surface of the secondary cylinder is provided with symmetrical raised steps. After the port of the main cylinder is inserted into the secondary cylinder and abuts against the raised steps, it is fixedly connected to the secondary cylinder by bolts.

3. The shaftless screw conveyor mechanism for a pipe jacking machine according to claim 2, characterized in that, A finger-shaped sealing ring is installed on the inner diameter surface of the raised step.

4. The shaftless screw conveyor mechanism for a pipe jacking machine according to claim 1, characterized in that, The fixing hole is located on the outer wall of the secondary cylinder between the two sets of raised steps, and the steel ball support structure is fixedly connected to the secondary cylinder by bolts.

5. The shaftless screw conveyor mechanism for a pipe jacking machine according to claim 1, characterized in that, The steel ball support structure consists of a base, a cylinder, steel balls, and a pressure cap; the end of the cylinder is provided with a recessed groove, and a steel ball is placed in the recessed groove. The steel ball is pressed tightly by the pressure cap, and the pressure cap is fixedly connected to the cylinder by bolts.

6. The shaftless screw conveyor mechanism for a pipe jacking machine according to claim 1, characterized in that, The length of the spiral cylinder wall is greater than the length of two pitches of the shaftless spiral blade, and the steel ball support structure is installed on the complete outer peripheral wall of the spiral cylinder wall.

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