A steel bar protection device and method for breaking pile heads

Abstract

The present invention relates to the field of steel bar protection devices, and discloses a steel bar protection device and method for breaking pile heads. The steel bar protection device in the present invention ensures the integrity of the steel bars by actively breaking the concrete blocks attached to the surface of the steel bars. Because in the prior art, the pile head breaking process directly cuts off the entire pile head through a cutting machine, and when cutting off the pile head, the steel bars of the pile head will be cut off together, which makes it necessary to additionally insert and install steel bars when pouring concrete again later, which is too inconvenient. When the steel bar protection device in the present invention is used, the pile head can be broken through a breaking drill bit, and is connected to the steel bar through a fixed sleeve to complete the pile head breaking process in cooperation. In the present invention, the pile head is not only broken through the breaking drill bit, but also by additionally setting a drilling machine, so that the output shaft of the drilling machine extends to the surface of the pile head through the opening in the middle of the first movable base and the second movable base to perform the pile head breaking work.

Description

Technical Field

[0001] The present invention relates to the field of steel bar protection devices, and specifically to a steel bar protection device and method for breaking pile heads. Background Art

[0002] During the casting of piles, in order to ensure the strength of the pile head concrete, the pile top elevation will be higher than the designed pile top by a certain distance (usually 0.5 to 1.0 m). However, the part higher than the designed pile top elevation needs to be chiseled off during subsequent construction. This process of chiseling off the pile head concrete is called "breaking the pile head". Most of the existing pile head breaking processes are carried out by manually operating a cutting machine for cutting and breaking. During the process of cutting and breaking the pile head by the cutting machine, since the location of the steel bars in the pile head is not clear, it is easy to cut the steel bars together during the cutting process. And if the method of manually knocking is used to break the concrete blocks, the work efficiency is low, and the operator bends the steel bars in the pile head when knocking the concrete, which affects the subsequent concrete pouring. Therefore, a device that can peel off the concrete blocks attached to the surface of the steel bars, protect the steel bars, and avoid the bending and breaking of the steel bars caused by knocking and cutting is needed. Summary of the Invention

[0003] The present invention provides a steel bar protection device and method for breaking pile heads, which overcomes the deficiencies described in the background art.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] A steel bar protection device and method for breaking pile heads, including a first breaking component, a second breaking component, and a breaking drill bit for breaking the pile head. The breaking drill bit is respectively installed on the first breaking component and the second breaking component through a breaking drill bit installation, and the output shaft of the breaking drill bit is arranged towards the middle of the steel bar protection device;

[0006] The second breaking component includes a second movable base, a second support platform, a second support plate body, and a support ring. The support ring is fixed on the second support platform through two second support plate bodies, and the second support platform is installed on the output shafts of a plurality of second telescopic cylinders. The second telescopic cylinders are fixed on the second movable base. Four vertical plates are arranged equidistantly on the upper part of the support ring, and a metal hose is fixed at the upper end of each vertical plate. The metal hose has an inverted U-shaped structure, and the other end extends obliquely downward towards the middle of the support ring;

[0007] An oscillation motor is installed above the support ring. An fixing plate is sleeved outside the oscillation motor, and each metal hose is connected to the surface of the fixing plate. The oscillation motor is connected to the steel bar protruding from the pile head.

[0008] A better technical solution: The first breaking component includes a first movable base, a first supporting platform, a first supporting plate body, and an insert plate. The first supporting platform is installed on the output shafts of multiple first telescopic cylinders, and the first supporting plate body is arranged on both sides of the upper part of the first supporting platform. When the first movable base is fixed to the second movable base, the first supporting platform and the second supporting platform are abutted, and the first supporting plate body is abutted against the side of the supporting ring. A supporting plate is provided on the surface of the first supporting plate body, and a corresponding insertion port is provided on the surface of the supporting ring. The oscillation motor passes through the opening and is embedded in the insertion port to be fixed.

[0009] A preferred technical solution: an opening is provided in the middle of the first movable base and the second movable base for the output shaft of the breaking device to pass through, the second telescopic cylinder and the first telescopic cylinder are staggered with the opening, and the breaking drill bit is respectively installed on the front and rear parts of the first movable base and the positioning column.

[0010] A preferred technical solution: the first movable base and the first supporting platform are driven and adjusted by a driving mechanism, the driving mechanism comprising a telescopic driving cylinder arranged on the second movable base and a buckle assembly arranged on the first movable base, the output shaft of the telescopic driving cylinder extends into the buckle assembly and is fixed by the buckle assembly to drive the output shaft of the telescopic driving cylinder to extend and retract to adjust the distance between the first movable base and the second movable base;

[0011] A positioning column is provided on the side of the second movable base facing the first movable base, and a corresponding positioning hole is provided on the side of the first movable base. When the first movable base is connected to the first supporting platform, the positioning column is embedded in the positioning hole.

[0012] A preferred technical solution: the snap-fit ​​assembly includes a fixed base and a buckle plate, the buckle plate is covered on the fixed base, and the buckle plate is hinged to the fixed base, a protrusion is provided on the output shaft of the telescopic driving cylinder, and a corresponding groove is provided on the surface of the buckle plate, when the output shaft of the telescopic driving cylinder extends into the snap-fit ​​assembly and the buckle plate is covered on the fixed base, the protrusion is embedded in the groove to be fixed.

[0013] A preferred technical solution: the side of the oscillation motor away from the output shaft is fixed to the steel bar through a fixed sleeve, and the circumferential surface of the fixed sleeve is equidistantly provided with a first protrusion and a second protrusion, an extrusion block is slidably installed in the second protrusion, a slide groove is provided on the side of the extrusion block, and a corresponding guide rail is provided in the second protrusion, and the guide rail is embedded in the slide groove, and a screw rod is rotatably installed on the surface of the extrusion block, and the screw rod passes through the second protrusion and is rotatably connected with the extrusion block, and the screw rod is threadedly connected to the second protrusion;

[0014] A filling block is provided in the first raised portion, and the filling block protrudes from the inner surface of the fixed sleeve. A cavity is provided in the filling block, and a plurality of anti-slip protrusions are distributed on the inner surface of the cavity, and a rubber airbag is respectively provided at the upper and lower parts of the inner end of the cavity, and the anti-slip protrusions are staggered with the rubber airbags.

[0015] A method for using the steel bar protection device, when using the steel bar protection device to break the pile head, it is necessary to first move and carry the first movable base and the first supporting platform to both sides of the pile head respectively, align the positioning column with the positioning hole, and extend the output shaft of the telescopic driving cylinder into the snap-fit ​​assembly to form a fixation, then drive the output shaft of the telescopic driving cylinder to extend and retract, adjust the distance between the first movable base and the second movable base, make it tightly against the pile head, and make the oscillation motor against the steel bar, start the oscillation motor to generate vibration, shake off the concrete blocks around the steel bar, and at the same time control the output shaft of the breaking drill to rotate and embed into the pile head, so as to break the concrete of the pile head.

[0016] Compared with the prior art, this technical solution has the following advantages:

[0017] In order to allow the present invention to break the pile head when it is fixed outside the pile head, an opening is provided in the middle of the first movable base and the second movable base in the present invention for the output shaft of the breaking device to pass through, the second telescopic cylinder and the first telescopic cylinder are staggered from the opening, and the breaking drill bits are respectively installed on the front and rear parts of the first movable base and the positioning column. When breaking the pile head, the output shaft of each breaking drill bit needs to be pushed outward and embedded in the pile head, and the pile head is broken by the output shaft of the breaking drill bit.

[0018] The steel bar protection device in the present invention ensures the integrity of the steel bar by actively breaking the concrete blocks attached to the surface of the steel bar. Because the pile head breaking process in the prior art directly cuts off the entire pile head through a cutting machine, the steel bars of the pile head will be cut off together when the pile head is cut off, so that when the concrete is poured again in the subsequent time, additional interlaced installation of steel bars is required, which is too inconvenient. The steel bar protection device in the present invention can break the pile head by breaking the drill bit when in use, and is connected to the steel bar through a fixed sleeve to cooperate with the pile head breaking process. The present invention does not only break the pile head by breaking the drill bit, but also can set up a drilling rig separately, so that the output shaft of the drilling rig extends to the surface of the pile head through the openings in the middle of the first movable base and the second movable base, and the pile head is broken.

[0019] In the present invention, when in use, the first movable base and the second movable base are not merely in a fixed state. Instead, by removing the insertion plate and driving the telescopic driving oil cylinder to output shaft to expand and contract, the distance between the first movable base and the second movable base can be changed. Under such a working principle, the steel bar protection device in the present invention can be matched with pile heads of different sizes, and the length of the output shaft of the telescopic driving oil cylinder can be changed with the replacement by the user, which does not mean that the adjustable width between the first movable base and the second movable base in the present invention is a fixed width. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 is Figure 1 exploded view.

[0023] Figure 3 is Figure 2 schematic diagram of different angles.

[0024] Figure 4 It is a schematic diagram of the driving mechanism.

[0025] Figure 5 It is a schematic diagram of the breaking drill bit.

[0026] Figure 6 It is a schematic diagram of the vibration motor.

[0027] Figure 7 It is a three-dimensional schematic diagram of the vibration motor.

[0028] Figure 8 is Figure 7 schematic diagram of different perspectives.

[0029] Figure 9 is Figure 7 schematic diagram of half-section.

[0030] Figure 10 It is a schematic diagram when the extrusion block is adjusted.

[0031] Figure 11 is Figure 10 exploded view of.

[0032] Figure 12 It is a schematic diagram of the filling block.

[0033] In the figure: the first breaking assembly 1, the first movable base 11, the positioning hole 111, the first support platform 12, the first telescopic cylinder 121, the first support plate body 13, the opening 131, the insertion plate 14, the fastening assembly 15, the fixed base 151, the fastening plate 152, the card slot 1521;

[0034] The second breaking component 2, the second movable base 21, the positioning column 211, the second support platform 22, the second telescopic cylinder 221, the second support plate body 23, the support ring 24, the vertical plate 241, the metal hose 242, the insertion port 243, the fixing plate 244, the telescopic driving oil cylinder 25, the convex block 251;

[0035] The breaking drill bit 3, the support plate 31;

[0036] The oscillating motor 4, the fixed sleeve 41, the first convex portion 42, the filling block 421, the cavity 4211, the anti-slip convex portion 4212, the rubber air bag 4213, the second convex portion 43, the guide rail 431, the extrusion block 44, the sliding groove 441, the lead screw 442. Detailed implementation manners

[0037] A steel bar protection device for breaking pile heads includes a first breaking component 1, a second breaking component 2, and a breaking drill bit 3 for breaking pile heads. The breaking drill bit 3 is respectively installed on the first breaking component 1 and the second breaking component 2 through a breaking drill bit 3, and the output shaft of the breaking drill bit 3 is arranged towards the middle of the steel bar protection device. It can be understood that when the steel bar protection device in the present invention is in use, the first breaking component 1 is sleeved outside the pile head to be broken, and the output shaft of the breaking drill bit 3 is used to break and remove the surface of the pile head, decomposing the pile head into multiple concrete blocks, and allowing the concrete blocks not connected to the steel bars to fall, so as to improve and accelerate the breaking efficiency of the pile head. In order to solve the technical problem of 'how to protect the steel bars' as described in the background art, corresponding designs are made in the present invention.

[0038] Among them, the second breaking component 2 includes a second movable base 21, a second support platform 22, a second support plate body 23, and a support ring 24. The support ring 24 is fixed on the second support platform 22 through two second support plate bodies 23, and the second support platform 22 is installed on the output shafts of a plurality of second telescopic cylinders 221. The second telescopic cylinders 221 are fixed on the second movable base 21. Four vertical plates 241 are arranged at equal intervals on the upper part of the support ring 24, and a metal hose 242 is fixed at the upper end of each vertical plate 241. The metal hose 242 has an inverted U-shaped structure, and the other end extends obliquely downward towards the middle of the support ring 24. And an oscillating motor 4 is installed above the support ring 24. An fixing plate 244 is sleeved outside the oscillating motor 4, and each metal hose 242 is connected to the surface of the fixing plate 244. The oscillating motor 4 is connected to the steel bars protruding from the pile head, and incorporated into Figure 2As shown, the support ring 24 is directly connected to the second support platform 22 through the second support plate 23 to form an integrated structure. When the second movable base 21 is moved to the periphery of the pile head, the support ring 24 is moved to a height higher than the upper end of the pile head, and then the second movable base 21 is pushed toward the pile head and against the outside of the pile head, and then the first movable base 11 is moved and fixed on the second movable base 21 to form a fixed state with the pile head. Based on this, during the use of the present invention, the steel bars protruding from the pile head need to be fixed by the oscillation motor 4, and the oscillation motor 4 generates vibration during operation, driving the steel bars to vibrate, and shattering the concrete blocks attached to the surface of the steel bars;

[0039] And as Figure 2 As shown, the support ring 24 fixes and supports the oscillation motor 4 through a plurality of metal hoses 242 so that the oscillation motor 4 can be suspended on the pile head and connected to the steel bars protruding from the pile head. The metal hoses 242 are made of metal material, which can ensure the support and fixation of the oscillation motor 4 while allowing the oscillation motor 4 to generate a greater vibration transmission, thereby improving the efficiency of peeling off the concrete blocks on the surface of the steel bars.

[0040] Wherein, the first breaking component 1 includes a first movable base 11, a first supporting platform 12, a first supporting plate body 13, and an inserting plate 14. The first supporting platform 12 is installed on the output shafts of a plurality of first telescopic cylinders 121, and the first supporting plate body 13 is arranged on both sides of the upper part of the first supporting platform 12. When the first movable base 11 and the second movable base 21 are fixed, the first supporting platform 12 and the second supporting platform 22 are abutted, and the first supporting plate body 13 abuts against the side of the supporting ring 24. The surface of the first supporting plate body 13 is provided with a supporting plate 31, and the surface of the supporting ring 24 is provided with a corresponding insertion port 243. The oscillation motor 4 passes through the opening 131 and is embedded in the insertion port 243 to be fixed. The first movable base 11 and the first supporting platform 12 can be understood as supporting the supporting ring 24 for cooperating with the second supporting plate body 23, and the first supporting plate body 13 and the supporting ring 24 are fixed by inserting the inserting plate 14, so that the first movable base 11 and the second movable base 21 are fixed;

[0041] In order to break the pile head when the present invention is fixed outside the pile head, an opening is provided in the middle of the first movable base 11 and the second movable base 21 in the present invention for the output shaft of the breaking device to pass through, and the second telescopic cylinder 221 and the first telescopic cylinder 121 are staggered from the opening, and the breaking drill bit 3 is respectively installed at the front and rear parts of the first movable base 11 and the positioning column 211. When breaking the pile head, the output shaft of each breaking drill bit 3 needs to be pushed outward and embedded in the pile head, and the pile head is broken by the output shaft of the breaking drill bit 3;

[0042] Furthermore, the first movable base 11 and the first support platform 12 are driven and adjusted by a driving mechanism. The driving mechanism includes a telescopic driving oil cylinder 25 arranged on the second movable base 21 and a fastening component 15 arranged on the first movable base 11. The output shaft of the telescopic driving oil cylinder 25 extends into the fastening component 15 and is fixed through the fastening component 15 to drive the output shaft of the telescopic driving oil cylinder 25 to expand and contract to adjust the distance between the first movable base 11 and the second movable base 21. Based on this, it can be known that in the present invention, when in use, the first movable base 11 and the second movable base 21 are not only in a fixed state, but the distance between the first movable base 11 and the second movable base 21 can be changed by removing the insertion plate 14 and driving the expansion and contraction of the output shaft of the telescopic driving oil cylinder 25. Under such a working principle, the steel bar protection device in the present invention can be matched with pile heads of different sizes, and the length of the output shaft of the telescopic driving oil cylinder 25 can be changed with the replacement of the user, which does not mean that the adjustable width between the first movable base 11 and the second movable base 21 in the present invention is a fixed width;

[0043] Further, in order to enable the first movable base 11 and the second movable base 21 to accurately form a combination during the combination and fixation process, the following design is made in the present invention: A positioning column 211 is provided on one side of the second movable base 21 facing the first movable base 11, and a corresponding positioning hole 111 is provided on the side surface of the first movable base 11. When the first movable base 11 is connected to the first support platform 12, the positioning column 211 is embedded in the positioning hole 111 to form a positioning. And the fastening component 15 includes a fixed base 151 and a fastening plate 152. The fastening plate 152 covers the fixed base 151, and the fastening plate 152 is hinged to the fixed base 151. A convex block 251 is provided on the output shaft of the telescopic driving oil cylinder 25, and a corresponding card slot 1521 is provided on the surface of the fastening plate 152. When the output shaft of the telescopic driving oil cylinder 25 extends into the fastening component 15 and the fastening plate 152 covers the fixed base 151, the convex block 251 is embedded in the card slot 1521 to form a fixation.

[0044] Furthermore, the side of the oscillation motor 4 away from the output shaft is fixed to the steel bar through a fixed sleeve 41, and the circumferential surface of the fixed sleeve 41 is equidistantly provided with a first protrusion 42 and a second protrusion 43, and an extrusion block 44 is slidably installed in the second protrusion 43, and a slide groove 441 is provided on the side of the extrusion block 44, and a corresponding guide rail 431 is provided in the second protrusion 43, and the guide rail 431 is embedded in the slide groove 441, and a screw rod 442 is rotatably installed on the surface of the extrusion block 44, and the screw rod 442 After passing through the second protruding portion 43, it is rotatably connected with the extruding block 44, and the screw rod 442 is threadedly connected with the second protruding portion 43. A filling block 421 is provided in the first protruding portion 42, and the filling block 421 protrudes from the inner surface of the fixed sleeve 41. A cavity 4211 is provided in the filling block 421, and a plurality of anti-skid protrusions 4212 are distributed on the inner surface of the cavity 4211, and a rubber airbag 4213 is respectively provided at the upper and lower parts of the inner end of the cavity 4211, and the anti-skid protrusions 4212 are staggered from the rubber airbag 4213.

[0045] Based on the above content, it can be known that when the steel bars protruding from the pile head are fixed by the oscillation motor 4, they can be fixed by the fixed sleeve 41 connected to the oscillation motor 4, and when they are sleeved outside the steel bars, the distance between the two slide grooves 441 can be shortened by rotating the screw rod 442 to facilitate clamping the steel bars, thereby being able to transmit the vibration more directly and improve the efficiency of stripping and breaking the concrete attached to the surface of the steel bars.

[0046] The present embodiment also proposes a method for using the steel bar protection device. When the pile head is broken by the steel bar protection device, the first movable base 11 and the first supporting platform 12 need to be moved and carried to the two sides of the pile head respectively, and the positioning column 211 is aligned with the positioning hole 111, and the output shaft of the telescopic driving cylinder 25 is extended to the buckle assembly 15 to be fixed, and then the output shaft of the telescopic driving cylinder 25 is driven to be extended and retracted, and the distance between the first movable base 11 and the second movable base 21 is adjusted to make them closely against the pile head, and the oscillation motor 4 is made to be against the steel bar, and the oscillation motor 4 is started to generate vibration, so as to shake off the concrete blocks around the steel bar, and at the same time, the output shaft of the breaking drill bit 3 is controlled to rotate and embed into the pile head, so as to break the concrete of the pile head;

[0047] It should be noted that the steel bar protection device in the present invention ensures the integrity of the steel bar by actively breaking the concrete blocks attached to the surface of the steel bar. Because in the prior art, the pile head breaking process directly cuts off the entire pile head through a cutting machine, and when cutting off the pile head, the steel bars of the pile head will be cut off together. When pouring concrete again in the subsequent process, additional steel bars need to be inserted and installed, which is extremely inconvenient. When the steel bar protection device in the present invention is in use, the pile head can be broken by the breaking drill bit 3 and connected to the steel bar through the fixed sleeve 41 to complete the pile head breaking process in cooperation. In the present invention, the pile head is not only broken by the breaking drill bit 3, but also can be broken by additionally setting a drilling machine, so that the output shaft of the drilling machine extends to the surface of the pile head through the opening in the middle of the first movable base 11 and the second movable base 21 to perform the pile head breaking work.

[0048] The above is only a preferred embodiment of the present invention, and thus the scope of implementation of the present invention cannot be limited thereby. That is, equivalent changes and modifications made according to the scope of the present invention patent and the content of the specification should still fall within the scope covered by the present invention.

Claims

1. A steel bar protection device for a broken pile head, characterized in that: The invention comprises a first breaking component (1), a second breaking component (2) and a breaking drill bit (3) for breaking the pile head, wherein the breaking drill bit (3) is respectively mounted on the first breaking component (1) and the second breaking component (2), and an output shaft of the breaking drill bit (3) is arranged toward the middle of the steel bar protection device; The second breaking assembly (2) comprises a second movable base (21), a second support platform (22), a second support plate body (23), and a support ring (24); the support ring (24) is fixed to the second support platform (22) via two second support plate bodies (23); the second support platform (22) is mounted on the output shafts of a plurality of second telescopic cylinders (221); the second telescopic cylinders (221) are fixed to the second movable base (21); four vertical plates (241) are arranged equidistantly on the upper part of the support ring (24); a metal hose (242) is fixed to the upper end of each vertical plate (241); the metal hose (242) is in an inverted U-shaped structure, with the other end extending obliquely downward toward the middle of the support ring (24); An oscillating motor (4) is installed above the support ring (24), a fixing plate (244) is provided on the outer casing of the oscillating motor (4), and each metal hose (242) is connected to the surface of the fixing plate (244), and the oscillating motor (4) is connected to the steel bar protruding from the pile head.

2. A steel bar protection device for a broken pile head according to claim 1, characterized in that: The first breaking assembly (1) comprises a first movable base (11), a first supporting platform (12), a first supporting plate body (13), and a plug plate (14); the first supporting platform (12) is mounted on the output shafts of a plurality of first telescopic cylinders (121), and the first supporting plate body (13) is arranged on both sides of the upper part of the first supporting platform (12); when the first movable base (11) and the second movable base (21) are fixed, the first supporting platform (12) and the second supporting platform (22) are abutted against each other, and the first supporting plate body (13) abuts against the side of the supporting ring (24).

3. A reinforcement protection device for a broken pile head according to claim 2, characterized in that: An opening is provided in the middle of each of the first movable base (11) and the second movable base (21) for the output shaft of the breaking device to pass through, and the second telescopic cylinder (221) and the first telescopic cylinder (121) are arranged to be staggered with respect to the opening.

4. A reinforcement protection device for a broken pile head according to claim 3, characterized in that: The first movable base (11) and the second movable base (21) are driven and adjusted by a driving mechanism, the driving mechanism comprising a telescopic driving cylinder (25) arranged on the second movable base (21) and a buckle assembly (15) arranged on the first movable base (11), the output shaft of the telescopic driving cylinder (25) extending into the buckle assembly (15) and being fixed by the buckle assembly (15) so as to drive the output shaft of the telescopic driving cylinder (25) to extend and retract to adjust the distance between the first movable base (11) and the second movable base (21); A positioning column (211) is provided on a side of the second movable base (21) facing the first movable base (11), and a corresponding positioning hole (111) is provided on a side of the first movable base (11); when the first movable base (11) is connected to the second movable base (21), the positioning column (211) is embedded in the positioning hole (111).

5. A reinforcement protection device for a broken pile head according to claim 4, characterized in that: The buckle assembly (15) comprises a fixed base (151) and a buckle plate (152). The buckle plate (152) covers the fixed base (151) and is hinged to the fixed base (151). The output shaft of the telescopic drive cylinder (25) is provided with a protrusion (251), and the surface of the buckle plate (152) has a corresponding groove (1521). When the output shaft of the telescopic drive cylinder (25) extends into the buckle assembly (15) and the buckle plate (152) covers the fixed base (151), the protrusion (251) is embedded in the groove (1521) to be fixed.

6. A reinforcement protection device for a broken pile head according to any one of claims 1 to 5, characterized in that: The side of the oscillation motor (4) away from the output shaft is fixed to the steel bar through a fixed sleeve (41), and the circumference of the fixed sleeve (41) is equidistantly provided with a first protrusion (42) and a second protrusion (43), and an extrusion block (44) is slidably installed in the second protrusion (43), and a slide groove (441) is provided on the side of the extrusion block (44), and a corresponding guide rail (431) is provided in the second protrusion (43), and the guide rail (431) is embedded in the slide groove (441). A screw rod (442) is also rotatably installed on the surface of the extrusion block (44), and the screw rod (442) passes through the second protrusion (43) and is rotatably connected to the extrusion block (44), and the screw rod (442) and the second protrusion (43) are threadedly connected; A filling block (421) is provided in the first raised portion (42), the filling block (421) protruding from the inner surface of the fixed sleeve (41), a cavity (4211) is provided in the filling block (421), and a plurality of anti-slip protrusions (4212) are distributed on the inner surface of the cavity (4211), and a rubber airbag (4213) is provided at the upper and lower parts of the inner end of the cavity (4211), respectively, and the anti-slip protrusions (4212) are staggered with the rubber airbag (4213).

7. A method for using the steel bar protection device according to claim 6, characterized in that: When breaking the pile head by means of the steel bar protection device, the first movable base (11) and the second movable base (21) need to be moved and carried to the two sides of the pile head respectively, the positioning column (211) is aligned with the positioning hole (111), and the output shaft of the telescopic driving oil cylinder (25) is extended into the buckle assembly (15) to be fixed, and then the output shaft of the telescopic driving oil cylinder (25) is driven to extend and retract, and the distance between the first movable base (11) and the second movable base (21) is adjusted so that they are closely against the pile head, and the oscillation motor (4) is abutted against the steel bar, and the oscillation motor (4) is started to vibrate, so as to shake off the concrete blocks around the steel bar, and at the same time, the output shaft of the breaking drill bit (3) is controlled to rotate and embed into the pile head, so as to break the concrete of the pile head.

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