A support column demolition device and a demolition method

Abstract

The present invention provides a support column demolition device and a demolition method. The support column demolition device includes a sliding seat, a counterweight, a connecting rod, a support assembly, a material collection assembly, a harvesting device, a height limit plate, a driving assembly, a sliding table and a climbing rod; the number of the sliding seats and the connecting rods is two, one end of the two sliding seats is the A end, and the support assembly connects the A ends of the two sliding seats; the connecting rod is slidably connected with the sliding seat, the two connecting rods are hinged and connected with the counterweight; the climbing rod is vertically connected with the support assembly and the height limit plate; one end of the sliding table is slidably arranged above the counterweight, and the other end is provided with the driving assembly; the harvesting device is arranged below the height limit plate, and the harvesting device is slidably connected with the climbing rod; a plurality of vibrating hammers are arranged on the harvesting device; a material collection hopper for collecting the crushed stones vibrated off by the vibrating hammers is arranged on the material collection assembly. The present invention does not require manual straightening for the demolition of the support column, and has higher safety.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a support column demolition device and a demolition method. Background Art

[0002] In house construction, structural support columns are generally pre-erected to play an auxiliary support role during the house construction process. A plurality of the support columns are vertically and spacedly arranged according to the internal space area of the house, and the tops of the support columns are sequentially connected by cross beams. When the house construction is completed, the support columns and the cross beams need to be demolished together.

[0003] The existing demolition method is as follows: First, a wire cutting machine is used to demolish the cross beam, and a crane and a lifting rope are used to remove the cross beam; then the lifting rope is tied to the support column, and the wire cutting machine is used to cut the support column, and then the lifting rope is slowly released to lay the vertical support column down to the horizontal position. Since the lifting rope is a flexible structure, the holding force is insufficient during the cutting by the wire cutting machine, resulting in a large swing of the support column. At this time, manual assistance is required. Not only does manual straightening require high operation requirements, but also due to the large amount of cutting dust, it poses a great potential safety hazard to the safety of the operators near the support column. Summary of the Invention

[0004] The purpose of the present invention is to provide a support column demolition device and a demolition method, which do not require manual straightening during the demolition of the support column, thereby improving safety.

[0005] The technical solution of the present invention is: A support column demolition device includes a sliding seat, a counterweight, a connecting rod, a support assembly, a material collecting assembly, a harvesting device, a height limiting disc, a driving assembly, a sliding table and a climbing rod;

[0006] The number of the sliding seats and the connecting rods is two. One end of each of the two sliding seats is an A end with an acute angle, and the support assembly connects the A ends of the two sliding seats; the two connecting rods are slidably connected to the two sliding seats respectively, the other ends of the two connecting rods are hinged, and a counterweight is fixedly connected to the hinged position; the climbing rod vertically connects the support assembly and the height limiting disc; one end of the sliding table is slidably arranged above the counterweight, and the other end is provided with a driving assembly; the harvesting device is arranged below the height limiting disc, and the harvesting device is slidably connected to the climbing rod; the driving assembly is used to drive the harvesting device to lift relative to the height limiting disc;

[0007] A plurality of vibration hammers for vibrating the support column are circumferentially arranged on the harvesting device; a material collecting hopper for collecting the crushed stones vibrated off by the vibration hammers is arranged on the material collecting assembly; both ends of the material collecting hopper are respectively connected to the harvesting device and the counterweight.

[0008] In the above solution, by designing a harvesting device that can generate a clamping force and a vibrating force, not only can the concrete on the outer layer of the support column be vibrated and broken, but also the support column can be effectively clamped while cutting the exposed steel bars of the support column, without manual auxiliary support, and the operator does not approach the support column beside the support column, greatly improving the operation safety; in addition, the support column demolition device is designed with a counterweight, and the counterweight can adjust the position according to the balance force with the support column to better balance the stability during the demolition process of the support column and effectively avoid tipping over.

[0009] Preferably, the harvesting device further includes a fixing plate, a mounting seat and a reinforcing rib. The fixing plates are arranged at intervals up and down. The mounting seats are circumferentially arranged among the two fixing plates arranged at intervals up and down, so that a plurality of the mounting seats enclose to form a cavity for placing the support column; a reinforcing rib is arranged between every two mounting seats, and the reinforcing rib is fixedly connected to the fixing plate and the mounting seat; a vibrating hammer extending towards the cavity is arranged on each mounting seat.

[0010] Preferably, the vibrating hammer is a hydraulic vibrating hammer that can stretch into and out of the cavity and can apply a clamping force.

[0011] Preferably, the receiving hopper is rotatably connected to one end of the harvesting device away from the counterweight, and a plurality of saw teeth are arranged at one end of the receiving hopper facing the counterweight.

[0012] Preferably, the receiving component further includes a connecting rod and a connecting plate. The connecting rod is hinged to the counterweight and the receiving hopper, and the connecting plate is connected to the receiving hopper and the harvesting device; the connecting rod and the connecting plate are located on opposite sides of the receiving hopper.

[0013] Preferably, the supporting component includes a supporting seat, a fixed shaft, a movable seat and a buffer pad. The bottom of the supporting seat is hinged to the sliding seat, and the top is fixed to the climbing rod. A fixed shaft is arranged at one end of the supporting seat away from the connecting rod; a through rotating cavity is arranged in the middle of the supporting seat;

[0014] The movable seat has two side walls forming an obtuse angle, and the corner between the two side walls is hinged to the fixed shaft. One of the side walls is located in the rotating cavity and can abut against the bottom of the supporting seat; a buffer pad is arranged at the upper end of the other side wall.

[0015] Preferably, the supporting seat includes a first plate, a second plate and an inclined plate. There are two first plates arranged at intervals. The first plate is L-shaped. The end of the horizontal side of the L-shaped is connected by the second plate, and the bottom of the horizontal side is hinged to the sliding seat, and the top of the horizontal side is fixed to the climbing rod; the fixed shaft is arranged at the end of the vertical side of the L-shaped; the rotating cavity is formed between the two first plates; an inclined plate inclined towards the rotating cavity is arranged on the second plate; when the movable seat rotates relative to the fixed shaft, the lower end of the movable seat can abut against the upper surface of the inclined plate.

[0016] Preferably, a pulley is provided at the bottom of the counterweight block, and the bottom of the pulley is flush with the bottom of the slide seat.

[0017] Preferably, a handle is provided on the slide seat, and the handle is arranged away from the A end.

[0018] The present invention also provides a support column removal method, which is performed using the support column removal device, comprising:

[0019] 1) When the support column removal device is in the initial position, the harvesting device is in contact with the height limiting plate;

[0020] 2) moving the support column removal device to the side of the support column, placing the slide on the ground beside the support column, and placing the harvesting device above the support column and aligning it with the support column;

[0021] 3) Starting the driving assembly to lower the harvesting device, so that the harvesting device is sleeved on the outer periphery of the support column during the lowering process until it moves to the root of the support column;

[0022] 4) Start the vibrating hammer to separate the outer concrete of the support column from the steel bars through the vibrating hammer, so that the steel bars of the support column are exposed; drive the vibrating hammer to retract;

[0023] 5) Start the drive assembly to reverse, so that the harvesting device rises a certain distance, and drives the vibrating hammer to extend and hold the support column;

[0024] 6) Use a cutting machine to cut off the exposed steel bars in step 4);

[0025] 7) The support column removal device is displaced together with the support column, and during the displacement process, the two slide seats are unfolded in a direction away from each other, thereby driving the connecting rod to unfold together, and when the connecting rod unfolds, the counterweight block is pushed to move in a direction away from the support column, thereby pulling the collecting hopper to move to the bottom of the support column to collect the fallen gravel;

[0026] 8) Release the vibrating hammer and remove the support column.

[0027] Compared with the related art, the beneficial effects of the present invention are as follows: by designing a harvesting device that can generate a clamping force and a vibration force, not only can the outer layer of concrete of the support column be vibrated and crushed, but also the exposed steel bars of the support column can be cut off while the support column is effectively clamped, without the need for manual auxiliary support, and the operator does not get close to the support column beside the support column, thereby greatly improving the safety of the operation; in addition, the support column removal device is designed with a counterweight block, and the counterweight block can be positioned according to the balancing force between the support column and the support column, so as to better balance the stability of the support column during the removal process and effectively avoid overturning. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1Schematic three-dimensional structure diagram of the support column removal device provided by the present invention;

[0029] Figure 2 For Figure 1 left side schematic diagram;

[0030] Figure 3 For Figure 1 enlarged schematic diagram at position B in

[0031] Figure 4 Schematic structure diagram of the support base;

[0032] Figure 5 Schematic diagram when the support column removal device provided by the present invention is in use.

[0033] In the attached drawings: 1. Slide base; 101. Base body; 102. First chute; 103. Slide block; 2. Counterweight; 21. Pulley; 22. Second chute; 3. Connecting rod; 4. Support assembly; 41. Support base; 42. Fixed shaft; 43. Movable seat; 44. Buffer pad; 411. First plate; 412. Second plate; 413. Inclined plate; 414. Rotating cavity; 5. Material collection assembly; 51. Connecting rod; 52. Material collection hopper; 53. Connecting plate; 54. Saw teeth; 6. Harvesting device; 61. Fixed plate; 62. Mounting seat; 63. Reinforcing rib; 64. Vibration hammer; 65. Cavity; 7. Height limiting plate; 8. Driving assembly; 81. Fixed pulley; 82. Reel; 83. Driving gear; 84. Motor; 85. Steel wire rope; 86. Rotating shaft; 87. Driven gear; 9. Slide table; 10. Climbing rod; 11. Handle. Detailed implementation manners

[0034] The present invention will be described in detail below with reference to the attached drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. For the convenience of description, words such as "upper", "lower", "left", and "right" hereinafter only indicate the same direction as the upper, lower, left, and right directions of the attached drawings itself, and do not limit the structure.

[0035] As Figure 1 , Figure 2 shown, a support column removal device provided in this embodiment includes a slide base 1, a counterweight 2, a connecting rod 3, a support assembly 4, a material collection assembly 5, a harvesting device 6, a height limiting plate 7, a driving assembly 8, a slide table 9, a climbing rod 10, and a handle 11.

[0036] As Figure 1 , Figure 3As shown in the figure, the sliding seat 1 includes a seat body 101, a first sliding groove 102 and a slider 103. The number of both the sliding seat 1 and the connecting rod 3 is two. One end of the seat body 101 of the two sliding seats 1 is an A end with an acute angle. The supporting component 4 connects the A ends of the two seat bodies 101. The first sliding groove 102 is provided at the upper end of the seat body 101. The two connecting rods 3 are slidably connected to the two sliding seats 1 in a one-to-one correspondence. The other ends of the two connecting rods 3 are hinged and fixedly connected to the counterweight 2 at the hinged position. The connecting rod 3 is hinged to the slider 103, and the slider 103 is slidably connected to the first sliding groove 102.

[0037] A pulley 21 is provided at the bottom of the counterweight 2, and a second sliding groove 22 is provided at the top. A pulley 21 is provided at the bottom of the counterweight 2, and the bottom of the pulley 21 is flush with the bottom of the sliding seat 1. When the counterweight 2 moves according to the center of gravity position of the support column 12, the pulley 21 contacts the ground and slides under the push of the connecting rod 3. A handle 11 is provided on the sliding seat 1, and the handle 11 is provided away from the A end.

[0038] As Figure 1 、 Figure 4 As shown in the figure, the supporting component 4 includes a support seat 41, a fixed shaft 42, a movable seat 43 and a buffer pad 44. The bottom of the support seat 41 is hinged to the sliding seat 1, and the top is fixed to the climbing rod 10. A fixed shaft 42 is provided at one end of the support seat 41 away from the connecting rod 3. A through rotating cavity 414 is provided in the middle of the support seat 41.

[0039] In a specific embodiment, the support seat 41 includes a first plate 411, a second plate 412 and an inclined plate 413. There are two first plates 411 arranged at intervals. The first plate 411 is L-shaped. The end of the horizontal side of the L shape is connected by the second plate 412, and the bottom of the horizontal side is hinged to the sliding seat 1, and the top of the horizontal side is fixed to the climbing rod 10; the fixed shaft 42 is provided at the end of the vertical side of the L shape; the rotating cavity 414 is formed between the two first plates 411; the inclined plate 413 inclined towards the rotating cavity 414 is provided on the second plate 412.

[0040] As Figure 1 As shown in the figure, the movable seat 43 has two side walls with an obtuse angle. The corner between the two side walls is hinged to the fixed shaft 42. One of the side walls is located in the rotating cavity 414, and the buffer pad 44 is provided at the upper end of the other side wall. When the movable seat 43 rotates relative to the fixed shaft 42, the lower end of the movable seat 43 can abut against the upper surface of the inclined plate 413.

[0041] If the bottom of the support column 12 is flat, the supporting component 4 is not required. If there is a beam at the bottom of the support column 12, such as Figure 5As shown, the buffer pad 44 of the support assembly 4 can abut against the inner top surface of the beam body at the bottom of the support column 12, and under the abutting action of the movable seat 43 and the inclined plate 413, the buffer pad 44 is closely attached to the inner top surface of the beam body. The support assembly 4 plays a supporting role and can provide better force support for the support column removal device.

[0042] As Figure 1 shown, the material receiving assembly 5 includes a connecting rod 51, a material receiving hopper 52, a connecting plate 53 and sawteeth 54. The connecting rod 51 is hinged to the counterweight 2 and the material receiving hopper 52, and the connecting plate 53 is connected to the material receiving hopper 52 and the harvesting device 6. The connecting rod 51 and the connecting plate 53 are located on opposite sides of the material receiving hopper 52. A plurality of sawteeth 54 are provided at one end of the material receiving hopper 52 facing the counterweight 2. The material receiving hopper 52 and the connecting rod 51 are of a detachable structure hinged by fasteners such as bolts and nuts. The material receiving hopper 52 is used to collect the shaken gravel. To ensure that the material receiving hopper 52 has a certain bearing capacity, in addition to increasing the stiffness of the material receiving hopper 52 itself, the stiffness of the connecting rod 51 can also be increased.

[0043] As Figure 1 shown, the harvesting device 6 includes a fixing plate 61, a mounting seat 62, a reinforcing rib 63, a vibrating hammer 64 and a cavity 65. The fixing plates 61 are arranged at intervals up and down. The outer circle of the fixing plate 61 is circular, and the inner circle is a directional annular plate. The mounting seats 62 are arranged circumferentially among two fixing plates 61 arranged at intervals up and down, so that a plurality of mounting seats 62 enclose to form a cavity 65 for placing the support column 12.

[0044] A reinforcing rib 63 is arranged between every two mounting seats 62, and the reinforcing rib 63 is fixedly connected to the fixing plate 61 and the mounting seat 62. Each mounting seat 62 is provided with the vibrating hammer 64 extending towards the cavity 65.

[0045] The vibrating hammer 64 can be a hydraulic vibrating hammer, and a hydraulic telescopic rod is used to connect with the vibrating hammer 64, which can drive the vibrating hammer 64 to stretch and contract towards the cavity 65 through the hydraulic telescopic rod and generate a clamping force capable of surrounding the support column 12. A vibrating hammer 64 with integrated vibration and telescoping can also be selected.

[0046] As Figure 1 shown, the climbing rod 10 is vertically connected between the first plate 411 of the support assembly 4 and the height limit plate 7. The length dimension of the climbing rod 10 needs to consider placing the height limit plate 7 above the support column 12. In addition, the climbing rod 10 can also be designed as a telescopic rod to ensure that it can be locked and has sufficient stiffness. Making the climbing rod 10 into a telescopic structure is easy to store and can be appropriately adjusted according to the height of the support column 12.

[0047] One end of the harvesting device 6 away from the connecting plate 53 is inserted into the climbing rod 10 so that the harvesting device 6 can slide up and down relative to the climbing rod 10.

[0048] As Figure 1 , Figure 2 shown, the driving assembly 8 includes a fixed pulley 81, a reel 82, a driving gear 83, a motor 84, a steel wire rope 85, a rotating shaft 86 and a driven gear 87. The upper end of the sliding table 9 is fixed to the climbing rod 10, and the lower end is slidably connected to the second chute 22 so that the counterweight 2 can slide relative to the sliding table 9.

[0049] The motor 84 is installed at the upper end of the sliding table 9, and a driving gear 83 is provided on the motor shaft of the motor 84. The rotating shaft 86 is rotatably arranged above the sliding table 9. A driven gear 87 meshing with the driving gear 83 is provided on the rotating shaft 86. At the same time, a reel 82 is also provided on the rotating shaft 86. A fixed pulley 81 is provided on the height limiting plate 7. One end of the steel wire rope 85 is wound around the reel 82, and the other end is wound around the fixed pulley 81 and passes through the height limiting plate 7 to be connected to the harvesting device 6. The steel wire rope 85 is in clearance fit with the height limiting plate 7, and the steel wire rope 85 is lowered by the release of the reel 82 and the gravity of the harvesting device 6.

[0050] The present invention also provides a method for hoisting using the above-mentioned support column removing device, including the following steps:

[0051] Step S1, disconnect the top of the support column 12 from the roof beam so that the top of the support column 12 is in a disconnected structure (as Figure 5 shown);

[0052] Step S2, when the support column removing device is in the initial position, the harvesting device 6 is in contact with the height limiting plate 7;

[0053] Step S3, move the support column removing device to the side of the support column 12, place the sliding seat 1 on the ground beside the support column 12, place the harvesting device 6 above the support column 12, and align the cavity 65 with the support column 12;

[0054] Step S4, start the driving assembly 8 to lower the harvesting device 6. During the lowering process, the harvesting device 6 is sleeved on the outer periphery of the support column 12 until it is displaced to the root of the support column 12 (as Figure 5 shown);

[0055] Step S5, start the vibrating hammer 64 to make the concrete on the outer layer of the support column 12 separate from the steel bars through the vibrating hammer 64, so that the steel bars of the support column 12 are exposed; drive the vibrating hammer 64 to retract;

[0056] Step S6: Start the reverse rotation of the motor 84 of the driving assembly 8 to raise the harvesting device 6 by a certain distance (so that it can hold the support column 12 without tipping over), and drive the vibrating hammer 64 to extend and hold the support column 12.

[0057] Step S7: Use a cutting machine to cut the exposed steel bars in Step S5.

[0058] Step S8: Hold the handle 11 and displace the support column removing device together with the support column 12. During the displacement, expand the two sliding seats 1 away from each other, thereby driving the connecting rod 3 to expand together. When the connecting rod 3 expands, it pushes the counterweight 2 to displace away from the support column 12 to balance with the moving support column 12 and prevent tipping over. At the same time, the counterweight 2 pulls the material receiving hopper 52 to move below the support column 12 to collect the falling crushed stones.

[0059] Step S9: When the support column 12 is completely removed from its original installation position, clean the crushed stones on the material receiving hopper 52; remove the hinge point between the material receiving hopper 52 and the connecting rod 51, and place the material receiving hopper 52 outside the support column 12.

[0060] Step S10: Tie the lifting rope of the crane to the support column 12 and retract the vibrating hammer 64, then the support column can be removed from below the removing device (there is no obstruction below), or after the harvesting device 6 is lifted and completely separated from the support column 12, then use the lifting rope to lay the support column 12 flat. Or, according to the stability requirements of actual use, the lifting rope can be tied to the removing device, place a cushion block on the ground, first place one end of the height limit plate of the removing device on the cushion block through the lifting rope to make the support column placed obliquely; then loosen the vibrating hammer 64, retract the harvesting device 6 to the position of the height limit plate 7, and then remove the device according to the actual situation, and finally lay the support column 12 flat.

[0061] Repeat the above steps until all support columns are completely removed.

[0062] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A support column demolition device, characterized in that, It includes a sliding seat (1), a counterweight (2), a connecting rod (3), a support assembly (4), a material receiving assembly (5), a harvesting device (6), a height limiting disc (7), a driving assembly (8), a sliding table (9) and a climbing rod (10); The number of the sliding seats (1) and the connecting rods (3) is two. One end of the two sliding seats (1) is an A end with an acute angle, and the support assembly (4) connects the A ends of the two sliding seats (1); the two connecting rods (3) are slidably connected to the two sliding seats (1) one by one, the other ends of the two connecting rods (3) are hinged, and are connected to the counterweight (2) at the hinged position; the climbing rod (10) is vertically connected to the support assembly (4) and the height limiting disc (7); one end of the sliding table (9) is slidably arranged above the counterweight (2), and the other end is provided with a driving assembly (8); the harvesting device (6) is arranged below the height limiting disc (7), and the harvesting device (6) is slidably connected to the climbing rod (10); the driving assembly (8) is used to drive the harvesting device (6) to lift relative to the height limiting disc (7); A plurality of vibration hammers (64) for vibrating support columns are circumferentially arranged on the harvesting device (6); a material receiving hopper (52) for collecting the crushed stones vibrated off by the vibration hammers (64) is arranged on the material receiving assembly (5); both ends of the material receiving hopper (52) are respectively connected to the harvesting device (6) and the counterweight (2).

2. The support column demolition device according to claim 1, characterized in that, The harvesting device (6) further includes a fixing plate (61), a mounting seat (62) and a reinforcing rib (63). The fixing plates (61) are arranged at intervals up and down. The mounting seats (62) are circumferentially arranged among the two fixing plates (61) arranged at intervals up and down, so that a plurality of the mounting seats (62) enclose to form a cavity (65) for placing support columns; a reinforcing rib (63) is arranged between every two mounting seats (62), and the reinforcing rib (63) is fixedly connected to the fixing plate (61) and the mounting seat (62); each mounting seat (62) is provided with the vibration hammer (64) extending towards the cavity (65).

3. The support column demolition device according to claim 2, characterized in that, The vibration hammer (64) is a hydraulic vibration hammer that can stretch into and out of the cavity (65) and can apply a clamping force.

4. The support column demolition device according to claim 1, characterized in that, The material receiving hopper (52) is rotatably connected to one end of the harvesting device (6) away from the counterweight (2), and a plurality of saw teeth (54) are arranged at one end of the material receiving hopper (52) facing the counterweight (2).

5. The support column demolition device according to claim 1 or 4, characterized in that, The material receiving assembly (5) further includes a connecting rod (51) and a connecting plate (53). The connecting rod (51) is hinged to the counterweight (2) and the material receiving hopper (52), and the connecting plate (53) is connected to the material receiving hopper (52) and the harvesting device (6); the connecting rod (51) and the connecting plate (53) are located on opposite sides of the material receiving hopper (52).

6. The support column demolition device according to claim 1, characterized in that, The support assembly (4) includes a support base (41), a fixed shaft (42), a movable seat (43), and a buffer pad (44). The bottom of the support base (41) is hinged to the sliding seat (1), and the top is fixed to the climbing rod (10). A fixed shaft (42) is provided at one end of the support base (41) away from the connecting rod (3). A through rotating cavity (414) is provided in the middle of the support base (41). The movable seat (43) has two side walls forming an obtuse angle. The corner between the two side walls is hinged to the fixed shaft (42). One of the side walls is located in the rotating cavity (414) and can abut against the bottom of the support base (41). The upper end of the other side wall is provided with the buffer pad (44).

7. The support column demolition device according to claim 6, characterized in that, The support base (41) includes a first plate (411), a second plate (412), and an inclined plate (413). There are two spaced first plates (411). The first plate (411) is L-shaped. The end of the horizontal side of the L-shape is connected by the second plate (412). The bottom of the horizontal side is hinged to the sliding seat (1), and the top of the horizontal side is fixed to the climbing rod (10). The fixed shaft (42) is provided at the end of the vertical side of the L-shape. The rotating cavity (414) is formed between the two first plates (411). The inclined plate (413) inclined towards the rotating cavity (414) is provided on the second plate (412). When the movable seat (43) rotates relative to the fixed shaft (42), the lower end of the movable seat (43) can abut against the upper surface of the inclined plate (413).

8. The support column demolition device according to claim 1, characterized in that, A pulley (21) is provided at the bottom of the counterweight (2), and the bottom of the pulley (21) is flush with the bottom of the sliding seat (1).

9. The support column demolition device according to claim 1, characterized in that, A handle (11) is provided on the sliding seat (1), and the handle (11) is arranged away from the A end.

10. A support column demolition method, which is carried out using the support column demolition device according to any one of claims 1 - 9, characterized in that, Including: 1) When the support column removing device is in the initial position, the harvesting device (6) is in contact with the height limit plate (7). 2) Move the support column removing device to the side of the support column. Place the sliding seat (1) on the ground beside the support column (12). Place the harvesting device (6) above the support column (12) and align it with the support column (12). 3) Start the driving assembly (8) to lower the harvesting device (6). During the lowering process, the harvesting device (6) is sleeved on the outer periphery of the support column (12) until it is displaced to the root of the support column (12). 4) Start the vibrating hammer (64) to separate the outer concrete of the support column (12) from the steel bars through the vibrating hammer (64), so that the steel bars of the support column (12) are exposed. Retract the vibrating hammer (64). 5) Start the driving assembly (8) to reverse, so that the harvesting device (6) rises a certain distance. Extend the vibrating hammer (64) and hold the support column (12). 6) Use a cutting machine to cut the exposed steel bars in step 4). 7) Displace the support column removing device together with the support column (12). During the displacement, expand the two sliding seats (1) in a direction away from each other, thereby driving the connecting rod (3) to expand together. When the connecting rod (3) expands, it pushes the counterweight (2) to displace in a direction away from the support column (12), thereby pulling the material receiving hopper (52) to move below the support column (12) to collect the fallen crushed stones. 8) Release the vibratory hammer (64) and remove the support column (12).

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