Ecological-friendly transmission tower reinforced concrete crushing device and crushing process

Abstract

The invention belongs to the technical field of reinforced concrete crushing, and particularly relates to an eco-friendly power transmission tower reinforced concrete crushing device and a crushing technology.The eco-friendly power transmission tower reinforced concrete crushing device comprises a crushing assembly, the crushing assembly comprises a box body, universal wheels are arranged at the bottom of the box body, and a storage cavity is formed in the box body; a storage cavity is formed in the side wall of the box body, an electrode bar and a surface contact plate are placed in the storage cavity, wires are electrically connected to the electrode bar and the surface contact plate, a mounting groove is formed in the side wall of the storage cavity, a power source is fixed in the mounting groove, a handrail is fixed to the side wall of the box body, and a lifting assembly is arranged on the box body. The lifting assembly comprises two symmetrically-arranged extending plates fixed to the side wall of the box body, and a mounting plate is fixed to the tops of the two extending plates. The whole crushing process does not need to use external force for beating, noise and dust pollution are avoided, the negative influence on the environment is reduced, the working efficiency is greatly improved, and the time cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of reinforced concrete crushing, and in particular relates to an eco-friendly transmission tower reinforced concrete crushing device and a crushing process. Background Art

[0002] With the rapid development of power transmission and transformation projects, in order to ensure power safety and improve energy efficiency, the transformation and upgrading of old lines has become the norm. Through material upgrades, structural optimization and digital management, the risk of electricity use can be significantly reduced and the quality of electricity use can be improved. In the process of transformation and upgrading of old lines, the demolition of transmission tower foundations is an indispensable part. According to environmental protection requirements, the tower base after demolition needs to be dug to 1 meter below the ground and restored accordingly to ensure that the land can be used for farming or natural recovery of vegetation.

[0003] The foundation of the transmission tower is made of reinforced concrete. The existing demolition method is to use external forces such as breaker hammers and impact drills to demolish it. This demolition method has the following shortcomings:

[0004] 1. The traditional use of external force methods such as breakers and impact drills will not only produce strong noise and dust pollution, but also large-scale machinery will occupy a large amount of temporary land when entering the construction site, which will have an adverse impact on the surrounding cultivated land, ecological protection red line areas, drinking water source protection areas, ecologically sensitive areas and the animals and plants therein. In addition, the potential oil leakage problem of large construction machinery may also cause soil and groundwater pollution.

[0005] 2. The traditional demolition method cannot completely crush the reinforced concrete at one time. It is necessary to first crush and demolish a part of the transmission tower foundation, then clean up the rubble and continue the crushing and demolition work, and repeat this process until it is completely demolished, which has low work efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide an eco-friendly transmission tower reinforced concrete crushing device and crushing process in response to the problems raised in the above background technology.

[0007] To achieve the above object, the present invention adopts the following technical scheme: an eco-friendly transmission tower reinforced concrete crushing device, comprising:

[0008] A crushing assembly comprises a box body, a universal wheel is provided at the bottom of the box body, a storage cavity is provided in the box body, an electrode rod and a surface contact plate are placed in the storage cavity, the electrode rod and the surface contact plate are electrically connected with wires, a mounting groove is provided on the side wall of the storage cavity, a power supply is fixed in the mounting groove, and a handrail is fixed on the side wall of the box body.

[0009] Furthermore, the box body is provided with a lifting assembly, which includes two symmetrically arranged extension plates fixed on the side walls of the box body, a mounting plate fixed on the top of the two extension plates, a first hydraulic telescopic rod is provided on the mounting plate, and a bearing plate is provided at the output end of the first hydraulic telescopic rod, and the bearing plate is slidably connected to the side walls of the extension plates.

[0010] Furthermore, a sliding groove is provided on the side wall of the extension plate, and a limiting block adapted to the sliding groove is fixed on the bearing plate, and the limiting block is slidably connected in the sliding groove.

[0011] Furthermore, a drilling assembly is provided on the supporting plate, and the drilling assembly includes a supporting shaft rotatably connected to the supporting plate, a mounting block is fixed on the supporting shaft, a chuck is rotatably connected to the mounting block, a drilling head and a grooving head are respectively provided at both ends of the chuck, and the drilling assembly also includes a driving component for driving the chuck to rotate and a flipping component for driving the mounting block to flip.

[0012] Furthermore, the driving component comprises a motor fixed in the mounting block, a first column gear is arranged on the output shaft of the motor, and a second column gear meshing with the first column gear is arranged on the chuck.

[0013] Furthermore, the flip component includes a third column gear fixed on the support shaft, a second hydraulic telescopic rod is provided on the bearing plate, an L-shaped rod is fixed to the output end of the second hydraulic telescopic rod, and a rack meshing with the third column gear is provided on the L-shaped rod.

[0014] Furthermore, the drilling head includes a hollow rod with one end fixed on the chuck, and the other end of the hollow rod is slidably connected to a plurality of slotting knives, and the plurality of slotting knives are distributed in a circumferential array with the central axis of the chuck as the center. A third hydraulic telescopic rod is provided in the hollow rod, and the output end of the third hydraulic telescopic rod is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the slotting knife.

[0015] Furthermore, an annular groove is provided on the outer wall of the electrode rod, an annular airbag is provided in the annular groove, a groove is provided in the middle of the electrode rod, a piston plate is sealingly and slidably connected in the groove, a fourth hydraulic telescopic rod for driving the piston plate is provided in the groove, a liquid storage chamber is formed between the piston plate and the bottom of the groove, the liquid storage chamber is connected to the annular airbag, and an electrorheological fluid is provided in the liquid storage chamber.

[0016] The present invention also provides an eco-friendly transmission tower reinforced concrete crushing process, comprising the following steps:

[0017] S1. Target area positioning: Use metal detectors to determine the distribution of steel bars and mark them;

[0018] S2, drilling and injection: use the drilling head in the above-mentioned crushing device to drill holes at the marked positions, the depth of which reaches the steel bar layer, and use the drilling slot head to open limit slots on the side walls of the holes, and then inject a conductive solution (such as salt water or a special electrolyte) into the holes to reduce the resistivity of the concrete;

[0019] S3, electrode installation: insert the electrode rod into the hole and control the extension of the fourth hydraulic telescopic rod, so that the electrorheological fluid expands the annular airbag and embeds it into the limiting groove of the hole side wall, and lays a surface contact plate on the concrete surface and covers it with conductive gel to enhance contact;

[0020] S4, electric heat crushing: Connect the wire to the terminal of the power supply and turn on the power for 10-60 seconds. The steel bar will expand up to 600 degrees due to resistance heat, and the concrete will crack due to the difference in thermal expansion coefficient. Repeat the power until the concrete is completely broken;

[0021] S5. Concrete collection: Use small machinery or manual labor to remove concrete fragments, collect and classify them, and store steel bars and concrete separately for subsequent recycling or processing.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. The present invention utilizes the inconsistency in thermal expansion coefficients between steel bars and concrete, and uses electric heating to cause cracks in the concrete until it breaks. The entire breaking process does not require the use of external force, thus avoiding noise and dust pollution, reducing negative impacts on the environment, and at the same time reducing the use of large machinery, reducing temporary land occupation, and reducing damage to surrounding cultivated land, ecological protection red line areas, etc., and avoiding soil and groundwater pollution caused by oil leakage during large-scale machinery construction.

[0024] 2. The present invention realizes concrete crushing from the inside by means of electric heating, and can crush the concrete at one time. Compared with the method of alternately carrying out crushing and cleaning in the prior art, it greatly improves work efficiency and reduces time cost.

[0025] 3. The present invention utilizes the shape change of electrorheological fluid. After the electrode rod is inserted into the concrete, the electrorheological fluid is squeezed into a pre-opened limit groove through the piston plate. At this time, the electrorheological fluid is in a liquid state, which can make the annular airbag fit better with the limit groove. When the electrode rod is energized, the electrorheological fluid is converted from liquid to solid to limit the electrode rod, avoiding the poor contact of the electrode rod due to cracks in the concrete, thereby ensuring stable crushing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an eco-friendly transmission tower reinforced concrete crushing device provided by the present invention;

[0027] Figure 2 It is a schematic diagram of the overall side view structure of an eco-friendly transmission tower reinforced concrete crushing device provided by the invention;

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0030] Figure 5 It is a structural schematic diagram of a drilling assembly of an eco-friendly transmission tower reinforced concrete crushing device provided by the invention;

[0031] Figure 6 It is a structural schematic diagram of a drilling slot head of an eco-friendly transmission tower reinforced concrete crushing device provided by the invention;

[0032] Figure 7 It is a schematic diagram of the structure of a flip assembly of an eco-friendly transmission tower reinforced concrete crushing device provided by the invention;

[0033] Figure 8 It is a schematic diagram of the electrode rod structure of an eco-friendly transmission tower reinforced concrete crushing device provided by the invention;

[0034] Fig. 9 The present invention provides an eco-friendly transmission tower reinforced concrete crushing process.

[0035] In the figure, 1 box, 11 universal wheel, 12 storage chamber, 13 electrode rod, 131 annular groove, 132 annular airbag, 133 groove, 134 piston plate, 135 fourth hydraulic telescopic rod, 136 liquid storage chamber, 14 surface contact plate, 15 wire, 16 installation groove, 17 power supply, 18 handrail;

[0036] 2 extension plate, 21 mounting plate, 22 first hydraulic telescopic rod, 23 bearing plate, 231 support shaft, 24 slide groove, 25 limit block;

[0037] 3 mounting block, 31 chuck, 32 drilling head, 33 drilling slot head, 331 hollow rod, 332 slotting knife, 333 third hydraulic telescopic rod, 334 connecting rod, 34 motor, 35 first column gear, 36 second column gear, 37 third column gear, 38 second hydraulic telescopic rod, 39 L-shaped rod, 310 rack. DETAILED DESCRIPTION

[0038] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0039] like Figure 1-Figure 8As shown, an eco-friendly transmission tower reinforced concrete crushing device includes a crushing assembly, which includes a box body 1. A universal wheel 11 is provided at the bottom of the box body 1 to facilitate the movement of the box body 1. A brake pad is provided on the universal wheel 11 to fix the position of the box body 1. A storage cavity 12 is provided in the box body 1. An electrode rod 13 and a surface contact plate 14 are placed in the storage cavity 12. In this embodiment, the surface contact plate 14 is a graphite plate. A wire 15 is electrically connected to the electrode rod 13 and the surface contact plate 14. A wiring clamp is provided at the other end of the wire. A mounting groove 16 is provided on the side wall of the storage cavity 12. A power supply 17 is fixed in the mounting groove 16. A wiring clamp is provided on the wire for connecting to the wiring post of the power supply 17. A handrail 18 is fixed on the side wall of the box body 1.

[0040] A lifting assembly is provided on the box body 1, and the lifting assembly includes two symmetrically arranged extension plates 2 fixed on the side walls of the box body 1, a mounting plate 21 is fixed on the top of the two extension plates 2, a first hydraulic telescopic rod 22 is provided on the mounting plate 21, a bearing plate 23 is provided at the output end of the first hydraulic telescopic rod 22, a protrusion is provided at the bottom of the extension plate 2 for extending the moving distance of the bearing plate 23, a slide groove 24 is opened on the side wall of the extension plate 2, a limit block 25 adapted to the slide groove 24 is fixed on the bearing plate 23, and the limit block 25 is slidably connected in the slide groove 24.

[0041] The bearing plate 23 is provided with a drilling assembly, which includes a support shaft 231 rotatably connected to the bearing plate 23, a mounting block 3 fixed to the support shaft 231, a chuck 31 rotatably connected to the mounting block 3, a drilling head 32 and a drilling slot head 33 are respectively provided at both ends of the chuck 31, the drilling head 32 is used to drill holes at the positions where the steel bars are located, and the drilling slot head 33 is used to open limiting slots on the side walls of the holes, and the drilling slot head 33 includes a hollow rod 331 fixed at one end to the chuck 31, and a plurality of slotting knives 332 are slidably connected to the other end of the hollow rod 331, and the plurality of slotting knives 332 are arranged around the central axis of the chuck 31. The hollow rod 331 is provided with a third hydraulic telescopic rod 333, the output end of the third hydraulic telescopic rod 333 is rotatably connected to a connecting rod 334, and the other end of the connecting rod 334 is rotatably connected to the slotting knife 332. When the third hydraulic telescopic rod 333 is retracted, the slotting knife 332 is inside the hollow rod 331. After the third hydraulic telescopic rod 333 is extended, the slotting knife 332 is pushed out of the hollow rod 331 under the action of the connecting rod 334 to facilitate slotting. The drilling assembly also includes a driving component for driving the chuck 31 to rotate and a flipping component for driving the mounting block 3 to flip.

[0042] The driving component includes a motor 34 fixed in the mounting block 3, a first column gear 35 is provided on the output shaft of the motor 34, and a second column gear 36 meshing with the first column gear 35 is provided on the chuck 31. When working, the first column gear 35 is driven to rotate by the motor 34, and the chuck 31 is further driven to rotate under the meshing action of the first column gear 35 and the second column gear 36, so as to realize the rotation of the drilling head 32 and the drilling head 33. The flipping component includes a third column gear 37 fixed on the support shaft 231, and a second hydraulic telescopic rod 37 is provided on the bearing plate 23. 8. An L-shaped rod 39 is fixed to the output end of the second hydraulic telescopic rod 38. A rack 310 meshing with the third column gear 37 is provided on the L-shaped rod 39. The number of teeth of the rack 310 is half of the number of teeth of the third column gear 37. When the second hydraulic telescopic rod 38 is fully extended, the drilling head 32 is at the lower end for drilling. When grooving is required, the second hydraulic telescopic rod 38 is retracted, and the support shaft 231 is driven to rotate under the action of the rack 310 and the third column gear 37, thereby realizing the flipping of the drilling head 32 and the grooving head 33 to facilitate the grooving work.

[0043] An annular groove 131 is provided on the outer wall of the electrode rod 13, and an annular airbag 132 is provided in the annular groove 131. The annular airbag 132 is an elastic airbag. A groove 133 is provided in the middle of the electrode rod 13. A piston plate 134 is sealed and slidably connected in the groove 133. A fourth hydraulic telescopic rod 135 for driving the piston plate 134 is provided in the groove 133. A liquid storage chamber 136 is formed between the piston plate 134 and the bottom of the groove 133. The liquid storage chamber 136 is connected to the annular airbag 132. An electrorheological fluid is provided in the liquid storage chamber 136. When the fourth hydraulic telescopic rod 135 is extended, the piston plate 134 is extended. When the retracted rod 135 is in a retracted state, the annular airbag 132 retracts into the annular groove 131 under the action of its own elastic force. When the fourth hydraulic telescopic rod 135 is extended, it pushes the piston plate 134 downward, and the piston plate 135 squeezes the electrorheological fluid into the annular airbag 132 and props up the annular airbag 132 and embeds it into the limiting groove on the concrete. When the electrode rod 13 is energized, the electrorheological fluid is converted from liquid to solid under the action of the electric field, which limits the electrode rod 13 and avoids poor contact of the electrode rod 13 due to cracks in the concrete.

[0044] like Fig. 9 As shown, the present invention also provides an eco-friendly transmission tower reinforced concrete crushing process, comprising the following steps:

[0045] S1. Target area positioning: Use metal detectors to determine the distribution of steel bars and mark them;

[0046] S2, drilling and injection: use the drilling head 32 in the above-mentioned crushing device to drill a hole at the marked position, the depth of which reaches the steel bar layer, and use the drilling head 33 to open a limit groove on the side wall of the hole, and then inject a conductive solution (such as salt water or a special electrolyte) into the hole to reduce the resistivity of the concrete;

[0047] S3, electrode installation: insert the electrode rod 13 into the hole and control the fourth hydraulic telescopic rod 135 to extend, so that the electrorheological fluid expands the annular airbag 132 and embeds it into the limiting groove of the hole side wall, and lay the surface contact plate 14 on the concrete surface and cover it with conductive gel to enhance contact;

[0048] S4, electric heat crushing: connect the wire 15 to the terminal of the power supply 17 and energize for 10-60 seconds. The steel bar expands up to 600 degrees due to resistance heating, and the concrete cracks due to the difference in thermal expansion coefficient. Repeat the power-on until the concrete is completely crushed;

[0049] S5. Concrete collection: Use small machinery or manual labor to remove concrete fragments, collect and classify them, and store steel bars and concrete separately for subsequent recycling or processing.

[0050] The working principle of the present invention is as follows:

[0051] During operation, a metal detector is used to determine the distribution position of the steel bars and mark them, and then the box body 1 is pushed to the mark so that the chuck 31 is located directly above the mark. When the second hydraulic telescopic rod 38 is fully extended, the drilling head 32 is vertically downward, and the motor 34 is turned on. The motor 34 drives the first column gear 35 to rotate, and further drives the chuck 31 to rotate under the meshing action of the first column gear 35 and the second column gear 36, thereby realizing the rotation of the drilling head 32 and the drilling head 33, and then the first hydraulic telescopic rod 22 is controlled to slowly extend to start the drilling operation;

[0052] After the drilling is completed, the first hydraulic telescopic rod 22 is controlled to retract so that the drilling head 32 is separated from the concrete, the motor 34 is turned off and the chuck 31 stops rotating, and then the second hydraulic telescopic rod 38 is controlled to fully retract. When the second hydraulic telescopic rod 38 is retracted, the third column gear 37 is driven to rotate through the rack 310, and the drilling head 32 and the drilling slot head 33 are turned over, so that the drilling slot head 33 is vertically downward;

[0053] The first hydraulic telescopic rod 22 is controlled to move down a certain distance (the distance is equal to the distance from the annular groove 131 to the top of the electrode rod 13), and the motor 35 is turned on to drive the chuck 31 and the drilling head 33 to rotate. Then, the third hydraulic telescopic rod 333 is controlled to slowly extend, so that the slotting knife 332 gradually extends to the outside of the hollow column 331 to perform the slotting work. After the slotting is completed, the third hydraulic telescopic rod 333 is retracted and the motor 34 is turned off. Then, the first hydraulic telescopic rod 22 is controlled to retract and the drilling head 33 is taken out.

[0054] A conductive solution is injected into the drilled hole to reduce the resistivity of the concrete, and then the electrode rod 13 is inserted into the hole and the fourth hydraulic telescopic rod 135 is controlled to extend. The extension of the fourth hydraulic telescopic rod 135 drives the piston plate 134 to move downward, and the piston plate 134 squeezes the electrorheological fluid into the annular airbag 132 to expand the annular airbag 132 and embed it into the limiting groove on the side wall of the hole. Then, a surface contact plate 14 is laid on the concrete surface and covered with a conductive gel to enhance the contact. By cleverly utilizing the physical form of the electrorheological fluid, the electrode rod 13 is limited to avoid poor contact of the electrode rod 13 due to cracks in the concrete, thereby ensuring stable crushing work.

[0055] Connect the wire 15 to the terminal of the power supply 17 and apply power for 10-60 seconds. The steel bar will expand up to 600 degrees due to resistance heat, and the concrete will crack due to the difference in thermal expansion coefficient. Repeat the power supply until the concrete is completely broken. After the concrete is broken, the steel bar and concrete are classified and collected for subsequent recycling or treatment;

[0056] The present invention utilizes the inconsistency between the thermal expansion coefficients of steel bars and concrete, and uses electric heating to cause cracks in the concrete until it breaks. The entire breaking process does not require the use of external force, thus avoiding noise and dust pollution, reducing the negative impact on the environment, and at the same time reducing the use of large machinery, reducing temporary land occupation, and reducing damage to surrounding cultivated land, ecological protection red line areas, etc., and avoiding soil and groundwater pollution caused by oil leakage during large-scale machinery construction. In addition, the present invention uses electric heating to achieve concrete breaking from the inside, and can break the concrete at one time. Compared with the method of alternating breaking and cleaning in the prior art, it greatly improves work efficiency and reduces time cost.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An eco-friendly transmission tower reinforced concrete crushing device, characterized in that: include: A crushing assembly, the crushing assembly comprising a box (1), the bottom of the box (1) being provided with a universal wheel (11), the box (1) being provided with a storage cavity (12), the storage cavity (12) being provided with an electrode rod (13) and a surface contact plate (14), the electrode rod (13) and the surface contact plate (14) being electrically connected with a wire (15), a mounting groove (16) being provided on a side wall of the storage cavity (12), a power source (17) being fixed in the mounting groove (16), and a handrail (18) being fixed on the side wall of the box (1).

2. The eco-friendly transmission tower reinforced concrete crushing device according to claim 1, characterized in that: The box body (1) is provided with a lifting assembly, which comprises two symmetrically arranged extension plates (2) fixed on the side wall of the box body (1), a mounting plate (21) is fixed on the top of the two extension plates (2), a first hydraulic telescopic rod (22) is provided on the mounting plate (21), and a bearing plate (23) is provided at the output end of the first hydraulic telescopic rod (22), and the bearing plate (23) is slidably connected to the side wall of the extension plate (2).

3. The eco-friendly transmission tower reinforced concrete crushing device according to claim 2, characterized in that: A sliding groove (24) is provided on the side wall of the extension plate (2), and a limiting block (25) adapted to the sliding groove (24) is fixed on the bearing plate (23), and the limiting block (25) is slidably connected in the sliding groove (24).

4. The eco-friendly transmission tower reinforced concrete crushing device according to claim 2, characterized in that: The bearing plate (23) is provided with a drilling assembly, the drilling assembly comprising a support column (231) rotatably connected to the bearing plate (23), a mounting block (3) being fixed to the support column (231), a chuck (31) being rotatably connected to the mounting block (3), a drilling head (32) and a drilling head (33) being respectively provided at two ends of the chuck (31), and the drilling assembly further comprising a driving component for driving the chuck (31) to rotate and a flipping component for driving the mounting block (3) to flip.

5. The eco-friendly transmission tower reinforced concrete crushing device according to claim 4, characterized in that: The driving component comprises a motor (34) fixed in the mounting block (3), a first column gear (35) is provided on the output shaft of the motor (34), and a second column gear (36) meshing with the first column gear (35) is provided on the chuck (31).

6. The eco-friendly transmission tower reinforced concrete crushing device according to claim 4, characterized in that: The flip component comprises a third column gear (37) fixed on the support column (231); a second hydraulic telescopic rod (38) is provided on the bearing plate (23); an L-shaped rod (39) is fixed to the output end of the second hydraulic telescopic rod (38); and a rack (310) meshing with the third column gear (37) is provided on the L-shaped rod (39).

7. The eco-friendly transmission tower reinforced concrete crushing device according to claim 4, characterized in that: The drilling head (33) includes a hollow rod (331) with one end fixed to the chuck (31), and the other end of the hollow rod (331) is slidably connected to a plurality of slotting knives (332), and the plurality of slotting knives (332) are distributed in a circumferential array with the central axis of the chuck (31) as the center of the circle, and a third hydraulic telescopic rod (333) is provided in the hollow rod (331), and the output end of the third hydraulic telescopic rod (333) is rotatably connected to a connecting rod (334), and the other end of the connecting rod (334) is rotatably connected to the slotting knife (332).

8. The eco-friendly transmission tower reinforced concrete crushing device according to claim 1, characterized in that: An annular groove (131) is provided on the outer wall of the electrode rod (13), an annular airbag (132) is provided in the annular groove (131), a groove (133) is provided in the middle of the electrode rod (13), a piston plate (134) is sealingly and slidably connected in the groove (133), a fourth hydraulic telescopic rod (135) for driving the piston plate (134) is provided in the groove (133), a liquid storage chamber (136) is formed between the piston plate (134) and the bottom of the groove (133), the liquid storage chamber (136) is communicated with the annular airbag (132), and an electrorheological fluid is provided in the liquid storage chamber (136).

9. An eco-friendly transmission tower reinforced concrete crushing process, characterized in that: The following steps are involved: S1. Target area positioning: Use metal detectors to determine the distribution of steel bars and mark them; S2, drilling and injection: using the drilling head (32) in the above-mentioned crushing device to drill a hole at the marked position, the depth of which reaches the steel bar layer, and using the drilling head (33) to open a limit groove on the side wall of the hole, and then injecting a conductive solution (such as salt water or a special electrolyte) into the hole to reduce the resistivity of the concrete; S3, electrode installation: insert the electrode rod (13) into the hole and control the fourth hydraulic telescopic rod (135) to extend, so that the electrorheological fluid expands the annular airbag (132) and embeds it into the limiting groove of the hole side wall, and lays a surface contact plate (14) on the concrete surface and covers it with conductive gel to enhance contact; S4, electric heat crushing: connect the wire (15) to the terminal of the power supply (17) and apply power for 10-60 seconds. The steel bar will expand up to 600 degrees due to resistance heat, and the concrete will crack due to the difference in thermal expansion coefficient. Repeat the power-on until the concrete is completely crushed. S5. Concrete collection: Use small machinery or manual labor to remove concrete fragments, collect and classify them, and store steel bars and concrete separately for subsequent recycling or processing.

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