Blast hole stemming machine

Abstract

The utility model discloses a blasthole stemming machine which comprises a stirring component and a stemming component, an inlet of the shaping pipe is connected with the stirring part, a first sliding groove and a second sliding groove are formed in an outlet of the shaping pipe, and a third sliding groove is further formed in the pipe wall of the shaping pipe; the cutting component comprises two sliding blocks which are arranged in the first sliding groove in a relatively sliding mode, a cutting rope is arranged between the two sliding blocks, two first pull ropes are arranged in the third sliding groove in a sliding mode, a pulling handle is arranged on the outer wall of the shaping pipe in a sliding mode, the pulling handle is connected with the penetrating ends of the first pull ropes, and a reset assembly is further arranged in the shaping pipe; according to the blasthole filling device, a mud rod is driven to enter and fill a blasthole by utilizing the pushing force generated when the stirring component conveys raw materials, workers do not need to frequently push the mud rod, the labor intensity of the workers is reduced, and after the blasthole is filled with the mud rod, each sliding block drives the cutting rope to cut the mud rod, so that the mud rod between the blasthole and the shaping pipe is separated, and the blasthole filling is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting, in particular to a blast hole plugging machine. Background Art

[0002] In the field of mining engineering, when blasting operations are required, blast holes need to be drilled at the blasting points and explosives are placed in the blast holes, and then the blast holes are plugged with stemming to improve the blasting efficiency of the explosives.

[0003] In actual work, usually a stemming machine is used to process the prepared raw materials into mud rods, and then the mud rods are sequentially inserted into the blast holes by manual plugging. Since the blast holes have a certain length, workers need to frequently use a push rod to push the mud rods into the blast holes for subsequent plugging of the mud rods. This working method has a relatively high labor intensity and low working efficiency. Therefore, this application specifically proposes a blast hole plugging machine that can reduce the labor intensity of workers and improve the plugging efficiency of mud rods. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a blast hole plugging machine that can reduce the labor intensity of workers and improve the plugging efficiency of mud rods.

[0005] To achieve the above purpose, the utility model provides a blast hole plugging machine, including:

[0006] A stirring component, which stirs and conveys the raw materials for forming mud rods;

[0007] A shaping pipe, the inlet of the shaping pipe is connected to the stirring component, and a first sliding groove and a second sliding groove in the shape of a ring are opened at the outlet of the shaping pipe. Both the first sliding groove and the second sliding groove are centered on the axis of the shaping pipe. The inner diameter of the second sliding groove is larger than that of the first sliding groove and is connected to the first sliding groove. A third sliding groove is also opened in the pipe wall of the shaping pipe along the length direction of the shaping pipe and is connected to the second sliding groove. One end of the third sliding groove is communicated with the outside of the shaping pipe. The shaping pipe is used to shape the raw materials into cylindrical mud rods;

[0008] Cutting component, disposed within the shaping tube, includes two sliders that are slidably disposed relative to each other within the first chute. A connecting shaft is vertically provided within each slider, and each connecting shaft is rotatably connected to the corresponding slider. A cutting rope is disposed between the two sliders. Two ends of the cutting rope are respectively wound around the corresponding connecting shafts, and a torsion spring is provided at the rotational connection of each connecting shaft and the corresponding slider. Each torsion spring provides a torsion force to the corresponding connecting shaft in a direction away from the center of the cutting rope, and one end of the cutting rope corresponding thereto provides a pulling force in a direction away from the center of the cutting rope. Two first pulling ropes are slidably disposed within the third chute. One end of each first pulling rope passes through the shaping tube from the third chute, and the other end extends into the second chute and is connected to the corresponding slider. When each first pulling rope is pulled in a direction closer to the stirring component, each first pulling rope drives the corresponding slider to slide downward within the first chute and causes the two sliders to move away from each other, thereby stretching the cutting rope. A pulling handle is slidably disposed along the length direction of the shaping tube on the outer wall of the shaping tube. The pulling handle is connected to one end of each first pulling rope that passes through the shaping tube. The pulling handle is used to drive each first pulling rope to move in a direction away from the stirring component. A reset component is further disposed within the shaping tube, and the reset component is used to drive the slider to move upward within the first chute.

[0009] Further, a fourth chute is further formed in the shaping tube. The fourth chute is disposed opposite to the third chute and one end thereof communicates with the second chute, and the other end communicates with the outside of the shaping tube.

[0010] The reset component includes two second pulling ropes that are slidably disposed within the fourth chute. One end of each second pulling rope is connected to the corresponding slider, and the other end of the second pulling rope extends out of the shaping tube. A protective cover for protecting each second pulling rope is provided on the side wall of the shaping tube. One end of each second pulling rope that extends out of the shaping tube is disposed within the protective cover. A winding rod is rotatably disposed within the protective cover, and each second pulling rope is wound around the winding rod. A disc spring is provided at the rotational connection of the winding rod and the protective cover, and the disc spring provides a pulling force to each second pulling rope in a direction away from the cutting component through the winding rod.

[0011] Further, a plurality of slag discharge slots are respectively formed on the top surface and the bottom surface of the shaping tube, and each slag discharge slot communicates with the second chute.

[0012] A cleaning component is further disposed within the shaping tube. The cleaning component includes two cleaning blocks that are slidably disposed within the second chute. The cleaning blocks are used to clean the soil accumulated within the second chute. Each cleaning block is connected to the corresponding slider, and when each slider slides, it drives the corresponding cleaning block to move together.

[0013] Furthermore, the stirring member includes a stirring barrel communicating with the inlet of the shaping tube. The top surface of the stirring barrel is provided with a feeding port. A spiral shaft is rotatably arranged in the stirring barrel. The spiral shaft is used for conveying the mud stick raw material. A plurality of stirring blades are distributed on the spiral shaft. The stirring blades are used for stirring the mud stick raw material. One end of the spiral shaft away from the shaping tube extends out of the stirring barrel and is provided with a power unit. The power unit is used for driving the spiral shaft to rotate and the connection between the spiral shaft and the stirring barrel is a dynamic seal connection.

[0014] Furthermore, a flexible hose is arranged between the stirring barrel and the shaping tube. The flexible hose is used for driving the shaping tube to swing.

[0015] Furthermore, a moving member is arranged below the stirring barrel. The moving member includes a bearing frame arranged below the stirring barrel. The power unit and the stirring barrel are both arranged on the bearing frame. The bearing frame is used for supporting the power unit and the stirring barrel. A pair of support feet are arranged at one end of the bearing frame close to the shaping tube. The two support feet are arranged oppositely and rotatably arranged at the bottom of the bearing frame. A pair of lifting feet are arranged at one end of the bearing frame away from the shaping tube. The two lifting feet are arranged oppositely and connected to the bottom of the bearing frame. Each lifting foot is telescopically arranged, and the telescopic end of each lifting foot vertically slides and telescopes in the fixed end of the corresponding lifting foot. When the lifting foot telescopes, the bearing frame swings around the rotation connection between the bearing frame and the support foot. A pushing handle is further arranged at one end of the bearing frame away from the shaping tube. The pushing handle facilitates manual pushing of the bearing frame.

[0016] The beneficial effects of the present utility model are embodied in:

[0017] In the present utility model, through the cooperation of the stirring member and the shaping tube, when the stirring member conveys the raw material, the thrust drives the mud stick to enter and fill the blast hole, eliminating the need for workers to frequently push the mud stick and reducing the labor intensity of the workers. Through the cooperation of the shaping tube and the cutting member, when the mud stick fills the blast hole, each slider drives the cutting rope to cut the mud stick, thereby separating the mud stick between the blast hole and the shaping tube to complete the filling of the blast hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of a blast hole filling machine according to the present utility model;

[0019] Figure 2 is a cross-sectional view of a blast hole filling machine according to the present utility model;

[0020] Figure 3 is Figure 2 an enlarged view of part A in

[0021] Figure 4 is the first cross-sectional view of the shaping tube;

[0022] Figure 5 is the second cross-sectional view of the shaping tube.

[0023] Explanation of reference numerals:

[0024] 1. Stirring component; 11. Stirring barrel; 111. Feed inlet; 12. Screw shaft; 13. Stirring blade; 14. Power unit; 2. Shaping tube; 21. First chute; 22. Second chute; 23. Third chute; 24. Fourth chute; 25. Slag discharge notch; 3. Cutting component; 31. Slide block; 311. Connecting shaft; 32. Cutting rope; 33. First pulling rope; 34. Pulling handle; 35. Reset component; 351. Second pulling rope; 352. Protective cover; 353. Winding rod; 4. Cleaning component; 41. Cleaning block; 5. Hose; 6. Moving component; 61. Carrying frame; 62. Supporting footrest; 63. Lifting footrest; 64. Pushing handle. Specific implementation

[0025] 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 only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0026] See Figures 1-5 .

[0027] The present invention discloses a blasthole plugging machine, comprising:

[0028] A stirring component 1 for stirring and conveying raw materials for forming a mud stick;

[0029] A shaping tube 2, the inlet of the shaping tube 2 is connected to the stirring component 1, a first chute 21 and a second chute 22 in a ring shape are provided at the outlet of the shaping tube 2, both the first chute 21 and the second chute 22 are centered on the axis of the shaping tube 2, the inner diameter of the second chute 22 is greater than that of the first chute 21 and is communicated with the first chute 21, a third chute 23 is also provided in the pipe wall of the shaping tube 2 and is arranged along the length direction of the shaping tube 2 and is communicated with the second chute 22, one end of the third chute 23 is communicated with the outside of the shaping tube 2, and the shaping tube 2 is used for shaping the raw materials into a cylindrical mud stick;

[0030] The cutting member 3 is disposed inside the shaping tube 2 and includes two sliders 31 that are slidably disposed relative to each other in the first chute 21. A connecting shaft 311 is vertically provided in each slider 31, and each connecting shaft 311 is rotatably connected to the corresponding slider 31. A cutting rope 32 is provided between the two sliders 31. The two ends of the cutting rope 32 are respectively wound around the corresponding connecting shafts 311, and a torsion spring (not shown in the figure) is provided at the rotational connection between each connecting shaft 311 and the corresponding slider 31. Each torsion spring provides a torsion force for the corresponding connecting shaft 311 in a direction away from the center of the cutting rope 32. Two first pulling ropes 33 are slidably disposed in the third chute 23. One end of each first pulling rope 33 passes through the shaping tube 2 from the third chute 23, and the other end extends into the second chute 22 and is connected to the corresponding slider 31. When each first pulling rope 33 is pulled in the direction close to the stirring member 1, each first pulling rope 33 drives the corresponding slider 31 to slide downward in the first chute 21 and makes the two sliders 31 move away from each other, thereby stretching the cutting rope 32. A pulling handle 34 is slidably disposed on the outer wall of the shaping tube 2 along the length direction of the shaping tube 2. The pulling handle 34 is connected to the end of each first pulling rope 33 that passes through the shaping tube 2. The pulling handle 34 is used to drive each first pulling rope 33 to move in a direction away from the stirring member 1. A reset assembly 35 is further provided inside the shaping tube 2, and the reset assembly 35 is used to drive the slider 31 to move upward in the first chute 21.

[0031] In specific implementation, after the explosive is placed at a suitable position in the blast hole, the staff inserts the outlet end of the shaping tube 2 into the blast hole and puts the mud stick raw material into the stirring member 1. The stirring member 1 stirs the raw material evenly and conveys it towards the shaping tube 2. The evenly stirred raw material moves inside the shaping tube 2 and forms a cylindrical mud stick under the constraint of the inner wall of the shaping tube 2 until the mud stick is conveyed into the blast hole. When the mud stick fills the blast hole, the staff pulls the pulling handle 34 in the direction close to the stirring member 1. One end of each first pulling rope 33 extending out of the shaping tube 2 moves together with the pulling handle 34, and each first pulling rope 33 drives the corresponding slider 31 to move downward in the first chute 21. At this time, the two sliders 31 move away from each other relatively and stretch the cutting rope 32, and the cutting rope 32 moves downward together with the slider 31 and cuts the mud stick. Since each torsion spring always provides a torsion force for the corresponding connecting shaft 311 in a direction away from the center of the cutting rope 32, each connecting shaft 311 provides a pulling force for the corresponding end of the cutting rope 32 in a direction away from the center of the cutting rope 32. The cutting rope 32 is stretched and always stays straight, thereby ensuring the cutting efficiency of the cutting rope 32. When the cutting rope 32 finishes cutting, the staff releases the pulling handle 34, and the reset assembly 35 drives each slider 31 to move upward in the first chute 21. At this time, each slider 31 drives the corresponding first pulling rope 33 to move together, and the pulling handle 34 moves towards the blast hole until it resets.

[0032] In this utility model, through the cooperation of the stirring component 1 and the shaping pipe 2, when the stirring component 1 conveys raw materials, the thrust drives the clay rod to enter and fill the blast hole, eliminating the need for workers to frequently push the clay rod, reducing the labor intensity of workers. Through the cooperation of the shaping pipe 2 and the cutting component 3, after the clay rod fills the blast hole, each slider 31 drives the cutting rope 32 to cut the clay rod, thereby separating the clay rod between the blast hole and the shaping pipe 2 to complete the filling of the blast hole.

[0033] Preferably, the cutting rope 32 can adopt a steel wire in the prior art.

[0034] In an embodiment, a fourth chute 24 is further provided in the shaping pipe 2. The fourth chute 24 is disposed opposite to the third chute 23 and one end thereof is communicated with the second chute 22, and the other end is communicated with the outside of the shaping pipe 2.

[0035] The reset assembly 35 includes two second pulling ropes 351 slidably disposed in the fourth chute 24. One end of each second pulling rope 351 is connected to the corresponding slider 31. The other end of the second pulling rope 351 extends out of the shaping pipe 2. A protective cover 352 for protecting each second pulling rope 351 is provided on the side wall of the shaping pipe 2. One end of each second pulling rope 351 extending out of the shaping pipe 2 is disposed in the protective cover 352. A winding rod 353 is rotatably provided in the protective cover 352. Each second pulling rope 351 is wound on the winding rod 353. A disc spring (not shown in the figure) is provided at the rotational connection of the winding rod 353 and the protective cover 352. The disc spring provides a pulling force away from the cutting component 3 for each second pulling rope 351 through the winding rod 353.

[0036] With such a design, when the staff moves the handle 34 in the direction close to the stirring component 1 and pulls it, each slider 31 moves downward through the corresponding first pulling rope 33, and each second pulling rope 351 moves together with the corresponding slider 31. At this time, the disc spring is stretched. When the staff releases the pulled handle 34, the disc spring loses restraint and drives each second pulling rope 351 to move in the fourth chute 24 in the direction close to the stirring component 1. At this time, each second pulling rope 351 drives the corresponding slider 31 to move upward until each slider 31 is reset.

[0037] In an embodiment, a plurality of slag discharge slots 25 are respectively provided on the top surface and the bottom surface of the shaping pipe 2. Each slag discharge slot 25 is communicated with the second chute 22.

[0038] A cleaning component 4 is further provided in the shaping pipe 2. The cleaning component 4 includes two cleaning blocks 41 slidably disposed in the second chute 22. The cleaning blocks 41 are used for cleaning the soil accumulated in the second chute 22. Each cleaning block 41 is connected to the corresponding slider 31. When each slider 31 slides, it drives the corresponding cleaning block 41 to move together.

[0039] With such a design, when the slider 31 moves downward, each cleaning block 41 moves together with the corresponding slider 31 in the second chute 22. When the cleaning block 41 moves, it scrapes the soil that has fallen into the second chute 22 and moves with the soil. When the cleaning block 41 passes through the slag discharge slot 25 at the bottom end of the shaping pipe 2, the soil is discharged from the corresponding slag discharge slot 25. When the slider 31 moves upward, each cleaning block 41 moves together with the corresponding slider 31. When the cleaning block 41 moves, it scrapes and carries the soil adhering to the second chute 22 again. When the cleaning block 41 passes through the slag discharge slot 25 at the top end of the shaping pipe 2, the soil is discharged from the corresponding slag discharge slot 25.

[0040] In one embodiment, the stirring component 1 includes a stirring barrel 11 communicated with the inlet of the shaping pipe 2. The top surface of the stirring barrel 11 is provided with a feeding port 111. A spiral shaft 12 is rotatably arranged in the stirring barrel 11. The spiral shaft 12 is used for conveying the mud rod raw material. A plurality of stirring blades 13 are distributed on the spiral shaft 12. The stirring blades 13 are used for stirring the mud rod raw material. One end of the spiral shaft 12 far away from the shaping pipe 2 extends out of the stirring barrel 11 and is provided with a power unit 14. The power unit 14 is used for driving the spiral shaft 12 to rotate and the connection between the spiral shaft 12 and the stirring barrel 11 is a dynamic seal connection.

[0041] With such a design, when it is necessary to fill the blast hole, the staff pours the mud rod raw material into the stirring barrel 11 and turns on the power unit 14. The power unit 14 drives the spiral shaft 12 and the stirring blades 13 to rotate synchronously, so as to stir the mud rod raw material and convey it towards the shaping pipe 2. And the staff can calculate the length of the mud rod entering the blast hole through the feeding amount and working time of the spiral shaft 12, so as to control the raw material consumption and avoid waste of raw materials.

[0042] In one embodiment, a flexible hose 5 is provided between the stirring barrel 11 and the shaping pipe 2. The flexible hose 5 is used for driving the shaping pipe 2 to swing.

[0043] With such a design, the flexible hose 5 can make the shaping pipe 2 swing independently while not affecting the connection between the stirring barrel 11 and the shaping pipe 2, so that the shaping pipe 2 can adapt to blast holes with different opening angles and increase the applicability.

[0044] In one embodiment, a moving component 6 is provided below the stirring barrel 11. The moving component 6 includes a bearing frame arranged below the stirring barrel 11. Both the power unit 14 and the stirring barrel 11 are arranged on the bearing frame. The bearing frame is used to support the power unit 14 and the stirring barrel 11. A pair of support feet 62 are provided at one end of the bearing frame close to the shaping pipe 2. The two support feet 62 are arranged oppositely and rotatably arranged at the bottom of the bearing frame. A pair of lifting feet 63 are provided at the end of the bearing frame away from the shaping pipe 2. The two lifting feet 63 are arranged oppositely and connected to the bottom of the bearing frame. Each lifting foot 63 is telescopically arranged, and the telescopic end of each lifting foot 63 slides vertically and telescopically in the fixed end of the corresponding lifting foot 63. When the lifting foot 63 telescopes, the bearing frame swings around the rotational connection between the bearing frame and the support foot 62. A push handle 64 is further provided at the end of the bearing frame away from the shaping pipe 2. The push handle 64 facilitates manual pushing of the bearing frame;

[0045] With such a design, when the shaping pipe 2 needs to be inserted into the blast hole, due to the limited bending amount of the hose 5, by adjusting the height of the lifting foot 63, the bearing frame swings around the rotational connection between the bearing frame and the support foot 62, so as to adjust the outlet direction of the shaping pipe 2 and assist the shaping pipe 2 to align with the blast hole. The push handle 64 facilitates manual transportation of the bearing frame, further increasing the applicability.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, "a plurality of", "a plurality of groups", and "several" mean more than two.

Claims

1. A blast hole plugging machine, characterized in that, Including: A stirring component (1) for stirring and conveying raw materials for forming a mud rod; A shaping tube (2), the inlet of the shaping tube (2) is connected to the stirring component (1), a first chute (21) and a second chute (22) in a ring shape are provided at the outlet of the shaping tube (2), both the first chute (21) and the second chute (22) are centered on the axis of the shaping tube (2), the inner diameter of the second chute (22) is larger than that of the first chute (21) and is connected to the first chute (21), a third chute (23) is also provided in the tube wall of the shaping tube (2) along the length direction of the shaping tube (2) and is connected to the second chute (22), one end of the third chute (23) is connected to the outside of the shaping tube (2), and the shaping tube (2) is used for shaping the raw materials into a cylindrical mud rod; A cutting component (3) is arranged in the shaping tube (2), including two sliders (31) sliding relatively in the first chute (21), a connecting shaft (311) is vertically arranged in each slider (31), each connecting shaft (311) is rotatably connected to the corresponding slider (31), a cutting rope (32) is arranged between the two sliders (31), both ends of the cutting rope (32) are wound around the corresponding connecting shaft (311), and a torsion spring is arranged at the rotational connection of the connecting shaft (311) and the corresponding slider (31), each torsion spring provides a torsion force for the corresponding connecting shaft (311) in the direction away from the center of the cutting rope (32), two first pulling ropes (33) are slidably arranged in the third chute (23), one end of each first pulling rope (33) passes out of the shaping tube (2) from the third chute (23), the other end extends into the second chute (22) and is connected to the corresponding slider (31), when each first pulling rope (33) is pulled in the direction close to the stirring component (1), each first pulling rope (33) drives the corresponding slider (31) to slide downward in the first chute (21) and makes the two sliders (31) move away from each other, thereby stretching the cutting rope (32), a pulling handle (34) is slidably arranged on the outer wall of the shaping tube (2) along the length direction of the shaping tube (2), the pulling handle (34) is connected to the end of each first pulling rope (33) passing out of the shaping tube (2), the pulling handle (34) is used for driving each first pulling rope (33) to move in the direction away from the stirring component (1), and a reset component (35) is also arranged in the shaping tube (2), and the reset component (35) is used for driving the slider (31) to move upward in the first chute (21).

2. The stemming machine according to claim 1, wherein, A fourth chute (24) is also provided in the shaping tube (2), the fourth chute (24) is arranged opposite to the third chute (23) and one end of it is connected to the second chute (22), and the other end is connected to the outside of the shaping tube (2); The reset component (35) includes two second pulling ropes (351) slidably arranged in the fourth chute (24). One end of each second pulling rope (351) is connected to the corresponding slider (31), and the other end of the second pulling rope (351) extends out of the shaping tube (2). A protective cover (352) for protecting each second pulling rope (351) is arranged on the side wall of the shaping tube (2). One end of each second pulling rope (351) extending out of the shaping tube (2) is arranged in the protective cover (352). A winding rod (353) is rotatably arranged in the protective cover (352). Each second pulling rope (351) is wound on the winding rod (353). A disc spring is arranged at the rotational connection of the winding rod (353) and the protective cover (352). The disc spring provides a pulling force in the direction away from the cutting component (3) for each second pulling rope (351) through the winding rod (353).

3. The stemming machine according to claim 2, characterized in that, A plurality of slag discharge notches (25) are respectively formed in the top surface and the bottom surface of the shaping tube (2), and each slag discharge notch (25) communicates with the second chute (22). A cleaning component (4) is further arranged in the shaping tube (2). The cleaning component (4) includes two cleaning blocks (41) slidably arranged in the second chute (22). The cleaning blocks (41) are used for cleaning the soil accumulated in the second chute (22). Each cleaning block (41) is connected to the corresponding slider (31). When each slider (31) slides, it drives the corresponding cleaning block (41) to move together.

4. The stemming machine according to claim 1, characterized in that, The stirring component (1) includes a stirring barrel (11) communicated with the inlet of the shaping tube (2). A feeding port (111) is arranged on the top surface of the stirring barrel (11). A spiral shaft (12) is rotatably arranged in the stirring barrel (11). The spiral shaft (12) is used for conveying the mud bar raw material. A plurality of stirring blades (13) are distributed on the spiral shaft (12). The stirring blades (13) are used for stirring the mud bar raw material. One end of the spiral shaft (12) away from the shaping tube (2) extends out of the stirring barrel (11) and is provided with a power unit (14). The power unit (14) is used for driving the spiral shaft (12) to rotate, and the connection between the spiral shaft (12) and the stirring barrel (11) is a dynamic seal connection.

5. The stemming machine according to claim 4, wherein, A hose (5) is arranged between the stirring barrel (11) and the shaping tube (2). The hose (5) is used for driving the shaping tube (2) to swing.

6. The stemming machine according to claim 4, characterized in that, A moving component (6) is provided below the mixing barrel (11). The moving component (6) includes a bearing frame arranged below the mixing barrel (11). Both the power unit (14) and the mixing barrel (11) are arranged on the bearing frame. The bearing frame is used to support the power unit (14) and the mixing barrel (11). A pair of support feet (62) is provided at one end of the bearing frame close to the shaping pipe (2). The two support feet (62) are arranged oppositely and rotatably arranged at the bottom of the bearing frame. A pair of lifting feet (63) is provided at one end of the bearing frame away from the shaping pipe (2). The two lifting feet (63) are arranged oppositely and connected to the bottom of the bearing frame. Each lifting foot (63) is telescopically arranged, and the telescopic end of each lifting foot (63) vertically slides and telescopes in the fixed end of the corresponding lifting foot (63). When the lifting foot (63) telescopes, the bearing frame swings around the rotation connection point between the bearing frame and the support foot (62). A push handle (64) is further provided at one end of the bearing frame away from the shaping pipe (2). The push handle (64) facilitates manual pushing of the bearing frame.

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