A large-span paving and leveling integrated machine

Abstract

The present invention relates to the technical field of construction equipment, and in particular to a large-span paving and leveling machine, comprising guide rails arranged at the upper and lower ends of a river bank, the guide rails being assembled by connecting several guide plates end to end, two guide rails being symmetrically provided with movable connection boxes, a main beam being movably provided between the two movable connection boxes, several hooks being evenly spaced on the right side of the main beam, and an arc-shaped beam being provided on the left side of the main beam. By setting two winches to pull several hooks on the main beam, this design can make the main beam more evenly stressed during movement, reduce stress concentration caused by single-point traction, and effectively reduce the risk of the main beam breaking. The traction force in the middle of the main beam can better balance the loads on both sides, avoid local excessive stress, extend the service life of the main beam, and ensure the safety and stability of construction.

Description

Technical Field

[0001] The invention relates to the technical field of construction equipment, and in particular to a large-span paving and leveling integrated machine. Background Art

[0002] In the fields of construction and civil engineering, especially in river embankment construction, with the continuous expansion of project scale and the increasing requirements for construction quality, traditional construction technology and equipment have gradually exposed many limitations.

[0003] When traditional construction equipment is used in the construction of large-span river embankments, the main beam is usually driven at both ends. However, due to the large span of the river embankment, the middle part of the main beam is very likely to break when moving forward, which in turn hinders the construction progress. At the same time, in the key processes of laying, vibrating and leveling, separate equipment and operating procedures are often used, which not only increases the complexity of construction, but also easily leads to quality problems in the process of connecting the processes. Summary of the invention

[0004] The purpose of the present invention is to provide a large-span paving and leveling integrated machine to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme, including guide rails arranged at the upper and lower ends of the river bank, the guide rails are assembled by connecting several guide plates end to end, two movable connecting boxes are symmetrically arranged on the two guide rails, a main beam is movably arranged between the two movable connecting boxes, a plurality of hooks are equidistantly arranged on the right side of the main beam, an arc-shaped beam is arranged on the left side of the main beam, an inverted "U"-shaped frame is symmetrically arranged at the front and rear ends of the left side of the arc-shaped beam, a screed plate is arranged between the right side feet of the two inverted "U"-shaped frames, a smoothing roller is movably arranged between the left side feet of the two inverted "U"-shaped frames, rack rails are symmetrically arranged on both sides of the top of the main beam, a cloth assembly is arranged between the two rack rails, and a vibrating assembly is symmetrically arranged on the front and rear sides of the cloth assembly, a pair of winches are arranged on the river bank slope on the right side of the main beam, and several steel ropes on the two winches are respectively connected to several hooks.

[0006] As a preferred embodiment of the present invention, a pair of limit strips are arranged on the guide plate, a slot is provided on one side of the limit strip, an assembly strip corresponding to the slot is provided on the other side of the limit strip, each of the limit strips is provided with a pair of first fixing holes passing through the guide plate, the first fixing holes are located above the slot, a second fixing hole is provided on the assembly strip at a position corresponding to the first fixing hole, and first slide rails are symmetrically arranged on the outer sides of the two limit strips.

[0007] As a preferred embodiment of the present invention, slide grooves are symmetrically provided on both sides of the bottom of the movable connection box, the first slide rail is arranged in the slide groove, and a pair of support plates are also provided at the bottom of the movable connection box, the support plate is located between two limit bars, and a plurality of rollers are movably provided at the bottom of each of the support plates, and the rollers are fitted on the guide plate, a connecting piece is provided on one side of the movable connection box, a filling shell is provided on the top of the movable connection box, a discharge port is provided on the side of the filling shell close to the connecting piece, and a feeding assembly is provided in the filling shell.

[0008] As a preferred embodiment of the present invention, connecting member 2 is provided at both front and rear ends of the main beam, connecting member 2 and connecting member 1 are movably connected by a movable pin, several reinforcing ribs are obliquely arranged between the arc beam and the main beam, and sliding grooves 3 are also opened on the inner walls on both sides of the main beam.

[0009] As a preferred embodiment of the present invention, the material distribution assembly includes a loading shell, a second material outlet is arranged at the bottom of the loading shell, a mounting plate is arranged in the middle of the top of the loading shell, a material feeding assembly is arranged downward on the mounting plate, a pair of slide grooves 2 are opened on the front and rear side walls of the loading shell, an inverted "L"-shaped plate is symmetrically arranged on the left and right side walls of the loading shell, a second slide rail is symmetrically arranged on the left and right side walls of the loading shell, the second slide rail is located below the inverted "L"-shaped plate, and the second slide rail is movably arranged in the slide groove 3;

[0010] A second motor is arranged on the outer wall of the inverted "L"-shaped plate. After the transmission end of the second motor passes through the inverted "L"-shaped plate, a gear one is arranged on the top thereof. Gear two and gear three are symmetrically arranged on both sides of the gear one. Gear two and gear three are movably arranged on the inner wall of the inverted "L"-shaped plate and are both meshed and connected with gear one. Gear four, gear five, gear six and gear seven are arranged side by side on both sides of the gear two and gear three. Gear four is meshed and connected with gear two, gear five is meshed and connected with gear three, gear six is ​​meshed and connected with gear four, and gear seven is meshed and connected with gear five. Rack wheels are arranged on the centers of the circles of gears two, three, six and seven, and the rack wheels are meshed and arranged in the rack.

[0011] As a preferred embodiment of the present invention, the vibrating assembly includes a slider, a pair of third slide rails are provided on one side of the slider, the third slide rails are movably provided in the second slide groove, a connecting member 4 is provided on the top of the slider, and a vibrating rod is provided on the bottom of the slider;

[0012] The vibrating assembly also includes a telescopic cylinder arranged on the side wall of the charging shell, and a connecting piece three is arranged on the top of the telescopic rod of the telescopic cylinder. The connecting piece three and the connecting piece four are movably connected through a connecting pin.

[0013] As a preferred embodiment of the present invention, the feeding assembly includes a first motor, a transmission rod is provided at a transmission end of the first motor, and a spiral pushing pattern is provided on the transmission rod.

[0014] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0015] 1. The present invention sets two winches to pull several hooks on the main beam. This design can make the main beam more evenly stressed during movement, reduce stress concentration caused by single-point traction, and effectively reduce the risk of main beam breakage. The traction force in the middle of the main beam can better balance the loads on both sides, avoid local excessive stress, extend the service life of the main beam, and ensure the safety and stability of construction.

[0016] 2. The present invention combines the three construction processes of spreading, vibrating and smoothing together. This integrated design greatly improves the construction efficiency and reduces the connection time and manpower input between construction processes. Vibrating while spreading can timely remove the air in the concrete and improve the quality of the concrete. Preliminary smoothing is carried out immediately after vibration, which provides convenience for subsequent fine smoothing and greatly saves the construction period.

[0017] 3. The present invention enhances the structural strength of the main beam by arranging arc beams and reinforcing ribs on the side of the main beam, thereby improving its bearing capacity, further ensuring the strength of the main beam and avoiding breakage during movement.

[0018] 4. The present invention sets guide rails and uses several groups of guide plates to cooperate with each other. This design makes the construction process more flexible and efficient. During construction, the guide plates completed in the front section can be removed and re-laid to the rear, avoiding the waste of resources and cost increase caused by investing a large number of guide plates at one time, and saving material costs.

[0019] 5. The present invention provides a material adding shell on the top of the movable connection box, which can be used to store and transport concrete cement, greatly facilitating the material adding operation of the material distribution assembly, and can continue to add material during the overall forward movement without stopping the machine for special material adding operations. This not only greatly saves construction time and avoids progress delays caused by stopping for material adding, but also significantly reduces manpower input and reduces the complexity and labor intensity of manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention during overall construction operation;

[0021] Figure 2 It is a schematic diagram of the guide rail structure of the present invention;

[0022] Figure 3for Figure 2 Enlarged view of point C in the middle;

[0023] Figure 4 It is a schematic diagram of the guide plate structure of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the movable connection box of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the movable connection box from the bottom perspective of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the material feeding assembly of the present invention;

[0027] Figure 8 It is a structural schematic diagram of one side of the main beam of the present invention;

[0028] Fig. 9 for Figure 8 Enlarged view of point A in the middle;

[0029] Fig.10 It is a schematic diagram of the structure of the other side of the main beam of the present invention;

[0030] Fig.11 for Fig.10 Enlarged view of point D in the middle;

[0031] Fig.12 This is a schematic diagram of the main beam structure from a top view of the present invention;

[0032] Fig.13 for Fig.12 Enlarged view of point B in the middle;

[0033] Fig.14 It is a schematic diagram of the structure of the screed plate and the smoothing roller of the present invention;

[0034] Fig.15 It is a schematic diagram of the structure of the cloth assembly of the present invention;

[0035] Fig.16 This is a schematic diagram of the bottom perspective structure of the fabric assembly of the present invention;

[0036] Fig.17 This is a schematic diagram of the structure of the material distribution component of the present invention after the vibration component is removed;

[0037] Fig.18 A diagram showing the connection relationship of several gears of the present invention;

[0038] Fig.19 It is a schematic diagram of the structure of the vibrating assembly of the present invention.

[0039] Figure numerals: guide plate 1, limit bar 10, slot 11, first fixing hole 12, first slide rail 13, assembly bar 14, second fixing hole 15, bolt 16, movable connection box 2, connector 1 20, slide groove 1 21, support plate 22, roller 23, feeding shell 24, discharge port 1 25, feeding assembly 3, first motor 30, transmission rod 31, spiral push pattern 32, main beam 4, connector 2 40, movable pin 41, rack 42, arc beam 43, reinforcing rib 44, draw hook 45, leveling plate 46, inverted "U" frame 47. Smoothing roller 48. Slide 3 49. Fabric assembly 5. Loading shell 50. Discharge port 2 51. Mounting plate 52. Inverted "L" shaped plate 53. Slide 2 54. Gear 1 55. Gear 2 56. Gear 3 57. Gear 4 58. Gear 5 59. Gear 6 510. Gear 7 511. Rack wheel 512. Second motor 513. Second slide rail 514. Vibrating assembly 6. Telescopic cylinder 60. Connector 3 61. Connector 4 62. Connecting pin 63. Sliding block 64. Third slide rail 65. Vibrating rod 66. Winch 7. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0041] like Figure 1-Figure 19 As shown, a large-span paving and leveling integrated machine proposed by the present invention comprises guide rails arranged at the upper and lower ends of the river bank, the guide rails are assembled by connecting several guide plates 1 end to end, movable connection boxes 2 are symmetrically arranged on the two guide rails, a main beam 4 is movably arranged between the two movable connection boxes 2, several hooks 45 are equidistantly arranged on the right side of the main beam 4, an arc-shaped beam 43 is arranged on the left side of the main beam 4, and inverted "U"-shaped frames 47 are symmetrically arranged at the front and rear ends of the left side of the arc-shaped beam 43, a screed plate 46 is arranged between the right side feet of the two inverted "U"-shaped frames 47, and a smoothing roller 48 is movably arranged between the left side feet of the two inverted "U"-shaped frames 47, rack rails 42 are symmetrically arranged on both sides of the top of the main beam 4, a material distribution component 5 is arranged between the two rack rails 42, and a vibrating component 6 is symmetrically arranged on the front and rear sides of the material distribution component 5, and a pair of winches 7 are arranged on the river bank slope on the right side of the main beam 4, and several steel ropes on the two winches 7 are respectively connected to several hooks 45;

[0042] Further, a pair of limiting bars 10 are provided on the guide plate 1, a slot 11 is provided on one side of the limiting bar 10, an assembly bar 14 corresponding to the slot 11 is provided on the other side of the limiting bar 10, each limiting bar 10 is provided with a pair of first fixing holes 12 penetrating the guide plate 1, the first fixing hole 12 is located above the slot 11, a second fixing hole 15 is provided on the assembly bar 14 at a position corresponding to the first fixing hole 12, and first slide rails 13 are symmetrically provided on the outer sides of the two limiting bars 10;

[0043] Furthermore, slide grooves 21 are symmetrically provided on both sides of the bottom of the movable connection box 2, the first slide rail 13 is arranged in the slide groove 21, a pair of support plates 22 are also provided at the bottom of the movable connection box 2, the support plates 22 are located between the two limit bars 10, a plurality of rollers 23 are movably provided at the bottom of each support plate 22, the rollers 23 are fitted on the guide plate 1, a connecting piece 20 is provided on one side of the movable connection box 2, a feeding shell 24 is provided on the top of the movable connection box 2, a discharge port 25 is provided on the side of the feeding shell 24 close to the connecting piece 20, and a feeding assembly 3 is provided in the feeding shell 24;

[0044] Furthermore, the front and rear ends of the main beam 4 are provided with a second connecting member 40, the second connecting member 40 and the first connecting member 20 are movably connected by a movable pin 41, a plurality of reinforcing ribs 44 are obliquely provided between the arc beam 43 and the main beam 4, and a third sliding groove 49 is also provided on the inner walls of both sides of the main beam 4;

[0045] Furthermore, the cloth assembly 5 includes a loading shell 50, a discharge port 2 51 is arranged at the bottom of the loading shell 50, a mounting plate 52 is arranged in the middle of the top of the loading shell 50, a feeding assembly 3 is arranged downward on the mounting plate 52, a pair of slide grooves 2 54 are opened on the front and rear side walls of the loading shell 50, an inverted "L"-shaped plate 53 is symmetrically arranged on the left and right side walls of the loading shell 50, and a second slide rail 514 is symmetrically arranged on the left and right side walls of the loading shell 50, the second slide rail 514 is located below the inverted "L"-shaped plate 53, and the second slide rail 514 is movably arranged in the slide groove 3 49, a second motor 513 is arranged on the outer wall of the inverted "L"-shaped plate 53, and a gear is arranged on the top of the second motor 513 after the transmission end passes through the inverted "L"-shaped plate 53. One 55, two gears 56 and three gears 57 are symmetrically arranged on both sides of the gear one 55, the two gears 56 and three gears 57 are movably arranged on the inner wall of the inverted "L"-shaped plate 53, and are both meshed with the gear one 55, and two gears 58, five gears 59, six gears 510 and seven gears 511 are arranged side by side on both sides of the gears 2 56 and three gears 57, the four gears 58 are meshed with the two gears 56, the five gears 59 are meshed with the three gears 57, the six gears 510 are meshed with the four gears 58, and the seven gears 511 are meshed with the five gears 59, and the gears 2 56, the three gears 57, the six gears 510 and the seven gears 511 are all arranged with a rack wheel 512 on the center of the circle, and the rack wheel 512 is meshed and arranged in the rack 42;

[0046] Furthermore, the vibrating assembly 6 includes a slider 64, a pair of third slide rails 65 are provided on one side of the slider 64, the third slide rail 65 is movably provided in the second slide groove 54, a connecting member 4 62 is provided on the top of the slider 64, and a vibrating rod 66 is provided on the bottom of the slider 64. The vibrating assembly 6 also includes a telescopic cylinder 60 provided on the side wall of the charging shell 50, a connecting member 3 61 is provided on the top of the telescopic rod of the telescopic cylinder 60, and the connecting member 3 61 and the connecting member 4 62 are movably connected through a connecting pin 63;

[0047] Furthermore, the feeding assembly 3 comprises a first motor 30 , a transmission rod 31 is disposed at a transmission end of the first motor 30 , and a spiral material pushing pattern 32 is disposed on the transmission rod 31 .

[0048] As an optimization scheme of the present invention, the second connecting piece 40 is connected to the movable connecting box 2 through a movable pin 41, so that the main beam 4 can be flexibly installed between the two movable connecting boxes 2, which can adapt to the river bank construction with different inclination angles; the sliding groove three 49 on the inner walls on both sides of the main beam 4 provides guidance and support for the movement of the cloth assembly 5; the gear transmission is driven by the second motor 513 to drive the rack wheel 512 to move in the rack 42, thereby realizing the precise movement of the loading shell 50 along the main beam 4, ensuring the uniformity and accuracy of the cloth.

[0049] During the construction process, firstly, guide rails need to be installed at the upper and lower ends of the river bank respectively: several guide plates 1 need to be connected end to end, and the assembly strip 14 of the previous guide plate 1 is inserted into the slot 11 of the next guide plate 1, so that the second fixing hole 15 is aligned with the first fixing hole 12, and then the bolt 16 is passed between the first fixing hole 12 and the second fixing hole 15, and the bolt 16 is passed through the guide plate 1 to fix it to the ground, and then the two movable connection boxes 2 are symmetrically installed on the two guide rails respectively, and the first slide rail 13 at the bottom is set in the slide groove 21 at the top, and then the two ends of the main beam 4 are connected to the movable connection boxes 2 on both sides through the movable pin 41, and then the two winches 7 are installed on the side of the river bank slope, and their steel ropes are pulled out respectively and connected to several hooks 45;

[0050] Next, the two feeding shells 24 are filled with concrete cement mixed in proportion, and then the material distribution component 5 is moved to below the discharge port 1 25 of the feeding shell 24 at the upper end of the river bank, and then the internal feeding component 3 is opened, and under the coordinated action of the spiral pushing pattern 32, the concrete cement is discharged into the charging shell 50, and then the feeding component 3 in the charging shell 50 and the second motors 513 on both sides are started at the same time. Under the rotation action of the second motor 513, the gear 1 55 is driven to rotate, and the gear 1 55 drives the gear 2 56 and the gear 3 57 to rotate in the opposite direction, and so on, as shown in FIG. 18 As shown, the gear 2 56, gear 3 57, gear 6 510 and gear 7 511 equipped with the rack wheel 512 will rotate synchronously in the same direction, thereby driving the loading shell 50 to move forward along the main beam 4 on the two racks 42. While moving, the feeding assembly 3 will discharge the concrete cement in the loading shell 50 from the discharge port 2 51 to the slope of the river bank. When the feeding assembly 3 and the second motors 513 on both sides are opened, it is also necessary to start the telescopic cylinder 60 and the vibrating rod 66 on the side opposite to the moving direction of the material distribution assembly 5. When the telescopic rod extends out, the top slider 64 moves downward along the slide groove, and then the vibrating rod 66 is inserted into the discharged concrete cement. The vibrating rod 66 will discharge the air in the concrete cement when vibrating. When the material distribution assembly 5 moves along the main beam 4 to the side of the movable connection box 2 below, the laying of a row of concrete cement is completed.

[0051] Then, the feeding assembly 3 of the lower filling shell 24 can be opened for filling, and the two winches 7 can be started for winding, and the main beam 4 can be dragged. The main beam 4 is moved forward as a whole through the movable connection boxes 2 on both sides until it moves to the position in front where no concrete cement is laid. During the overall movement, the screed plate 46 and the smoothing roller 48 on the main beam 4 will perform preliminary smoothing operations. After the filling and movement stop, the second motor 513 can be reversed and the telescopic cylinder 60 on the other side can be started, and the above construction steps can be repeated.

[0052] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A large-span paving and leveling machine, comprising guide rails arranged at the upper and lower ends of a river bank, characterized in that: The guide rail is assembled by connecting a plurality of guide plates (1) end to end, two of the guide rails are symmetrically provided with movable connection boxes (2), a main beam (4) is movably provided between the two movable connection boxes (2), a plurality of draw hooks (45) are equidistantly provided on the right side of the main beam (4), an arc-shaped beam (43) is provided on the left side of the main beam (4), an inverted "U"-shaped frame (47) is symmetrically provided at the front and rear ends of the left side of the arc-shaped beam (43), and a A screed plate (46), a smoothing roller (48) is movably arranged between the left legs of the two inverted "U"-shaped frames (47), racks (42) are symmetrically arranged on both sides of the top of the main beam (4), a material distribution component (5) is arranged between the two racks (42), and vibrating components (6) are symmetrically arranged on the front and rear sides of the material distribution component (5), and a pair of winches (7) are arranged on the river bank slope on the right side of the main beam (4), and a plurality of steel ropes on the two winches (7) are respectively connected to a plurality of hooks (45); A pair of limiting strips (10) are provided on the guide plate (1), a slot (11) is provided on one side of the limiting strip (10), an assembly strip (14) corresponding to the slot (11) is provided on the other side of the limiting strip (10), each limiting strip (10) is provided with a pair of first fixing holes (12) penetrating the guide plate (1), the first fixing holes (12) are located above the slot (11), a second fixing hole (15) is provided on the assembly strip (14) at a position corresponding to the first fixing hole (12), and first slide rails (13) are symmetrically provided on the outer sides of the two limiting strips (10); The movable connection box (2) has two symmetrically arranged slide grooves (21) on both sides of the bottom thereof, the first slide rail (13) being arranged in the slide grooves (21), the bottom of the movable connection box (2) is also provided with a pair of support plates (22), the support plates (22) being located between the two limit bars (10), the bottom of each support plate (22) being movably provided with a plurality of rollers (23), the rollers (23) being fitted on the guide plate (1), one side of the movable connection box (2) being provided with a connecting piece (20), the top of the movable connection box (2) being provided with a material feeding shell (24), the side of the material feeding shell (24) close to the connecting piece (20) being provided with a material outlet (25), and a material feeding assembly (3) being arranged in the material feeding shell (24); The main beam (4) is provided with a second connecting member (40) at both the front and rear ends, the second connecting member (40) and the first connecting member (20) are movably connected via a movable pin (41), a plurality of reinforcing ribs (44) are obliquely provided between the arc-shaped beam (43) and the main beam (4), and a third sliding groove (49) is also provided on the inner walls of both sides of the main beam (4); The material distribution assembly (5) comprises a loading shell (50), a second material outlet (51) is arranged at the bottom of the loading shell (50), a mounting plate (52) is arranged in the middle of the top of the loading shell (50), a material feeding assembly (3) is arranged downward on the mounting plate (52), a pair of second slide grooves (54) are opened on the front and rear side walls of the loading shell (50), an inverted "L"-shaped plate (53) is symmetrically arranged on the left and right side walls of the loading shell (50), and second slide rails (514) are symmetrically arranged on the left and right side walls of the loading shell (50), the second slide rails (514) are located below the inverted "L"-shaped plate (53), and the second slide rails (514) are movably arranged in the third slide groove (49); A second motor (513) is arranged on the outer wall of the inverted "L"-shaped plate (53); after the transmission end of the second motor (513) passes through the inverted "L"-shaped plate (53), a gear 1 (55) is arranged on the top thereof; gear 2 (56) and gear 3 (57) are symmetrically arranged on both sides of the gear 1 (55); the gear 2 (56) and gear 3 (57) are movably arranged on the inner wall of the inverted "L"-shaped plate (53) and are both meshedly connected with the gear 1 (55); gears 4 (58) and 59 are arranged side by side on both sides of the gear 2 (56) and gear 3 (57). Gear five (59), gear six (510) and gear seven (511), the gear four (58) is meshedly connected with gear two (56), the gear five (59) is meshedly connected with gear three (57), the gear six (510) is meshedly connected with gear four (58), the gear seven (511) is meshedly connected with gear five (59), and a rack wheel (512) is arranged at the center of the circle of gear two (56), gear three (57), gear six (510) and gear seven (511), and the rack wheel (512) is meshedly arranged in the rack (42); The vibrating assembly (6) comprises a slider (64), a pair of third slide rails (65) are provided on one side of the slider (64), the third slide rails (65) are movably arranged in the second slide groove (54), a connecting member (4) (62) is provided on the top of the slider (64), and a vibrating rod (66) is provided on the bottom of the slider (64); The vibrating assembly (6) further comprises a telescopic cylinder (60) arranged on the side wall of the charging shell (50), a connecting piece three (61) being arranged on the top of the telescopic rod of the telescopic cylinder (60), and the connecting piece three (61) and the connecting piece four (62) being movably connected via a connecting pin (63); The material feeding assembly (3) comprises a first motor (30), a transmission rod (31) is provided at a transmission end of the first motor (30), and a spiral material pushing pattern (32) is provided on the transmission rod (31).

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