Reinforced concrete pipe biting machine for urban renewal and construction method of reinforced concrete pipe biting machine

Abstract

The invention relates to the technical field of urban concrete pipe renewal, and discloses a reinforced concrete pipe biting machine for urban renewal and a construction method thereof.The reinforced concrete pipe biting machine comprises a pipe biting machine assembly, the pipe biting machine assembly comprises a machine body, a propelling head, a crushing head, a supporting piece and an old pipeline, the propelling head is arranged at the end of the machine body, and the crushing head is arranged in the machine body; the supporting piece is fixed in the machine body, and the old pipeline is located in the machine body; the auxiliary assembly is arranged in the machine body and comprises a fixing ring, an electromagnetic coil, a rubbing ring, a guide part, a buffer ring and a driving part, the fixing ring is fixed in the machine body, the electromagnetic coil is wound in the fixing ring, and the rubbing ring slides in the fixing ring. An old pipeline can be crushed in the pipe biting machine through the auxiliary assembly, a steel bar structure in concrete is heated and softened in an electromagnetic heating mode, the crushing efficiency is improved, the construction procedure is simplified, and the pipeline updating efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of urban concrete pipe renewal, in particular to a reinforced concrete pipe biting machine for urban renewal and a construction method thereof. Background Art

[0002] In recent years, with the continuous advancement of my country's urbanization construction and the emergence of extreme weather, the existing pipelines in many cities can no longer meet people's daily needs, affecting people's lives, property, health and quality of life. For example, the cross-sectional dimensions of urban sewage and drainage pipes are insufficient, resulting in limited drainage volume in extreme weather, urban waterlogging and sewage accumulation. Therefore, there is an urgent need to upgrade the urban drainage pipe system and rebuild a new drainage pipe system.

[0003] Prior art, such as patent application number 2020115412160, is a pipe-eating method pipeline renewal tunneling machine and construction method, which cuts the soil layer around the old pipe constructed by the original jacking method to eat the old pipe into the main machine, and realizes the advancement of the tunneling machine and the expansion of the original tunnel without cutting the old pipe, thereby greatly improving the cutting and advancement efficiency. During the tunneling process, the old pipe is dragged on the track by a winch as a whole section, transported to the starting position and then lifted out, which greatly improves the cleaning efficiency of the old pipe section, and then improves the pipeline renewal construction efficiency. However, when adding a new pipe, the device needs to drag out the old pipe first and then send in the new pipe. This operation needs to be repeated for each section of the pipe, which greatly increases the construction time and has low efficiency. At the same time, the handling of the old pipe is also inconvenient, and an additional process is required to crush it. Summary of the invention

[0004] Purpose of the invention: The problem to be solved by the present invention is that in the prior art, when adding a new pipeline, it is necessary to first drag out the old pipeline and then send the new pipeline in. This operation needs to be repeated for each section of the pipeline, which greatly increases the construction time and has low efficiency. At the same time, the handling of the old pipeline is also inconvenient, and an additional process is required to crush it.

[0005] Technical solution: The present invention provides a reinforced concrete pipe biting machine for urban renewal and a construction method thereof, which comprises a pipe biting machine assembly, including a fuselage, a propulsion head, a crushing head, a support member and an old pipe, wherein the propulsion head is arranged at the end of the fuselage, the crushing head is arranged in the fuselage, the support member is fixed in the fuselage, and the old pipe is located in the fuselage; and

[0006] An auxiliary component is arranged in the fuselage, including a fixed ring, an electromagnetic coil, a scratch ring, a guide, a buffer ring and a driving member. The fixed ring is fixed in the fuselage, the electromagnetic coil is wound in the fixed ring, the scratch ring slides in the fixed ring, the guide member is fixed on both sides of the scratch ring, the buffer ring is fixed on one side of the fixed ring, and the driving member is arranged on the top of the inner wall of the fixed ring.

[0007] Furthermore, the tube biting machine assembly of the reinforced concrete tube biting machine also includes a feed plate and a conveyor belt. The feed plate is arranged at the bottom of the crushing head, and the conveyor belt is fixed to the inner bottom wall of the machine body and is located on one side of the feed plate.

[0008] Furthermore, the support member of the reinforced concrete pipe biting machine includes a support ring, which is fixed in the machine body, the crushing head is located in the support ring, and a discharge port is opened at the bottom of the support ring.

[0009] Furthermore, the support member of the reinforced concrete pipe biting machine also includes a positioning ring, a support rod, a hinged plate, a support pad and a hydraulic rod. The positioning ring is located inside the fuselage, the support rod is fixed to one side of the positioning ring, and the other end thereof is fixed to the inner wall of the fuselage, the hinged plate is hinged to the outside of the positioning ring, the support pad is fixed to the end of the hinged plate, and both ends of the hydraulic rod are respectively fixed to the outside of the positioning ring and the hinged plate.

[0010] Furthermore, the guide member of the reinforced concrete pipe biting machine includes a guide rod, a guide frame, a fixed rod, a fixed block and a first spring, the guide rod is fixed on both sides of the scratch ring, the guide frame is located on the surface of the guide rod, the two ends of the fixed rod are respectively fixed to the guide frame and the support ring, the fixed block is fixed to the end of the guide rod, and the two ends of the first spring are respectively fixed to the fixed block and the support ring.

[0011] Furthermore, an ejector ring is fixed on the inner side of the buffer ring of the reinforced concrete pipe biting machine, and anti-blocking holes are opened on all sides of the buffer ring.

[0012] Furthermore, the driving part of the reinforced concrete pipe biting machine includes a fixed frame, a slide plate, a traction block, a second spring and a reset rod. The fixed frame is fixed to the top and bottom of the inner wall of the scratch ring, the slide plate slides in the fixed frame, the traction block is fixed to the bottom of the slide plate, the two ends of the second spring are respectively fixed to the inner wall of the fixed frame and the slide plate, the reset rod is fixed to the inner wall of the fixed ring, the traction block is provided with an inclined groove that cooperates with it, and the top and bottom of the old pipe are provided with traction holes.

[0013] Furthermore, the auxiliary components of the reinforced concrete pipe biting machine also include a hydraulic breaker, which is fixed to the top and bottom of the inner wall of the machine body.

[0014] Furthermore, the auxiliary components of the reinforced concrete pipe biting machine also include shield brushes, which are evenly distributed on the inner wall of the machine body.

[0015] Furthermore, the construction method of the reinforced concrete pipe biting machine includes the following steps:

[0016] Dig the starting well and receiving well, and install the pipe biting machine assembly and its supporting equipment in the starting well;

[0017] Perform excavation operations, and use the propulsion head to dig away the soil around the old pipe during the propulsion process, so that the old pipe enters the fuselage;

[0018] The old pipe is crushed by the crushing head, and the steel bars in the old pipe are softened by heating with the electromagnetic coil;

[0019] The crushed waste is transported out and new pipe is laid simultaneously as the pipe biting machine assembly moves.

[0020] Beneficial effects: Compared with the prior art, the significant advantages of the present invention are: the old pipe can be crushed inside the pipe biting machine through the auxiliary components, and the steel structure in the concrete is heated and softened by electromagnetic heating, which improves the crushing efficiency, simplifies the construction process, and greatly improves the efficiency of pipeline renewal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structural diagram of the reinforced concrete pipe biting machine and its construction method for urban renewal;

[0022] Figure 2 A side view of a reinforced concrete pipe biting machine and a construction method thereof for urban renewal;

[0023] Figure 3 An overall cross-sectional view of a reinforced concrete pipe biting machine for urban renewal and its construction method;

[0024] Figure 4 Another side view of the reinforced concrete pipe biting machine and its construction method for urban renewal;

[0025] Figure 5 A cross-sectional view of a driving part of a reinforced concrete pipe biting machine for urban renewal and a construction method thereof;

[0026] Figure 6 Another perspective view of the scratch ring of the reinforced concrete pipe biting machine and its construction method for urban renewal;

[0027] Figure 7 A structural diagram of a guide member for a reinforced concrete pipe biting machine and a construction method thereof for urban renewal;

[0028] Figure 8Side view of a buffer ring of a reinforced concrete pipe biting machine and its construction method for urban renewal. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1 to Figure 4 , which is the first embodiment of the present invention, and this embodiment provides a reinforced concrete pipe biting machine for urban renewal and a construction method thereof. The reinforced concrete pipe biting machine for urban renewal includes a pipe biting machine assembly 100, including a fuselage 101, a propulsion head 102, a crushing head 103, a support member 104 and an old pipe 105. The propulsion head 102 is arranged at the end of the fuselage 101, the crushing head 103 is arranged in the fuselage 101, the support member 104 is fixed in the fuselage 101, and the old pipe 105 is located in the fuselage 101.

[0033] The thrust head 102 and the fuselage 101 are both provided with a driving mechanism and a slurry conveying mechanism, and their working principles are existing technologies and will not be elaborated here. The crushing head 103 adopts the crushing part of the existing pipe jacking machine or shield machine, and a driving mechanism is provided at the tail end, which can crush the concrete pipe, and can also adopt a jaw crushing method. Those skilled in the art can set it as needed, and their working principles are existing technologies and will not be elaborated here. The support member 104 is used to support and guide the old pipe 105 to a certain extent, so as to avoid its displacement due to gravity and other reasons after entering the fuselage 101, which affects subsequent operations.

[0034] The auxiliary component 200 is arranged in the fuselage 101, and includes a fixed ring 201, an electromagnetic coil 202, a scratch ring 203, a guide member 204, a buffer ring 205 and a driving member 206. The fixed ring 201 is fixed in the fuselage 101, the electromagnetic coil 202 is wound in the fixed ring 201, the scratch ring 203 slides in the fixed ring 201, the guide member 204 is fixed on both sides of the scratch ring 203, the buffer ring 205 is fixed on one side of the fixed ring 201, and the driving member 206 is arranged on the top of the inner wall of the fixed ring 201.

[0035] The fixed ring 201 is located on one side of the crushing head 103 and is made of high-strength plastic material. The electromagnetic coil 202 is located inside it. During the movement of the old pipe 105, the internal steel structure is first heated by the electromagnetic coil 202, and then the entire old pipe 105 is crushed by the crushing head 103. The scratch ring 203 is used to scratch the inner wall of the fixed ring 201 to prevent the steel bar fragments from entering the electromagnetic coil 202 during the crushing process and affecting its heating efficiency. The guide member 204 is used to guide and limit the scratch ring 203 to prevent it from offsetting during the left and right movement. The buffer ring 205 has a limiting and buffering effect on the scratch ring 203 to prevent it from a large impact during resetting and causing damage. The driving member 206 is used to drive the scratch ring 203 to perform a scratching operation.

[0036] Example 2

[0037] Reference Figure 2 to Figure 8 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0038] Specifically, the tube biting machine assembly 100 also includes a blanking plate 106 and a conveyor belt 107 . The blanking plate 106 is arranged at the bottom of the crushing head 103 , and the conveyor belt 107 is fixed to the inner bottom wall of the machine body 101 and is located on one side of the blanking plate 106 .

[0039] A vibration generator may be provided at the bottom of the unloading plate 106. The unloading plate 106 is inclined, which facilitates the conveying of the crushed material to the conveyor belt 107 and to the starting well. The conveyor belt 107 is extended and laid along the new pipeline. The working principle of this conveying link is the existing technology and will not be elaborated here.

[0040] The support member 104 includes a support ring 104a, which is fixed in the body 101. The crushing head 103 is located in the support ring 104a. A discharge port S is provided at the bottom of the support ring 104a.

[0041] The support ring 104a is used to fix the crushing head 103. The crushed slag is introduced into the discharge port S from the discharge plate 106, and then input into the conveyor belt 107 by the discharge plate 106 for the discharge operation. The technicians in this field can install a re-crushing mechanism such as a jaw crusher at the position of the discharge port S as needed to crush large pieces of concrete again, thereby improving the efficiency of crushing and conveying.

[0042] The support member 104 also includes a positioning ring 104b, a support rod 104c, a hinge plate 104d, a support pad 104e and a hydraulic rod 104f. The positioning ring 104b is located inside the fuselage 101, the support rod 104c is fixed to one side of the positioning ring 104b, and the other end thereof is fixed to the inner wall of the fuselage 101, the hinge plate 104d is hinged to the outside of the positioning ring 104b, the support pad 104e is fixed to the end of the hinge plate 104d, and the two ends of the hydraulic rod 104f are respectively fixed to the outside of the positioning ring 104b and the hinge plate 104d.

[0043] When the old pipe 105 enters the interior of the fuselage 101, the positioning ring 104b will be located in the old pipe 105, and the multiple hinged plates 104d around it will extend outward to support the old pipe 105 from the inside, thereby achieving a multi-directional positioning effect, so that the old pipe 105 can be in a centered position when moving forward. The hydraulic rod 104f is hinged with a support plate, which makes it more convenient to apply a top force to the hinged plate 104d. The support pad 104e contacts the inner wall of the old pipe 105 to play a buffering effect, avoiding damage to the hinged plate 104d caused by hard contact.

[0044] There are at least four hinged plates 104d, which are equidistantly distributed around the positioning ring 104b. The support rod 104c is made of hard plastic material to ensure its bearing capacity while avoiding being heated by the electromagnetic coil 202, which affects the efficiency of the electromagnetic coil 202 in heating the steel bars. The hydraulic rod 104f is externally electrically controlled. According to the inner diameter of the old pipe 105, the staff controls the extension and retraction of the hydraulic rod 104f in advance, so that the inclination angle of the hinged plate 104d can support the old pipe 105.

[0045] The guide member 204 includes a guide rod 204a, a guide frame 204b, a fixed rod 204c, a fixed block 204d and a first spring 204e. The guide rod 204a is fixed on both sides of the scratch ring 203. The guide frame 204b is located on the surface of the guide rod 204a. The two ends of the fixed rod 204c are respectively fixed to the guide frame 204b and the support ring 104a. The fixed block 204d is fixed to the end of the guide rod 204a. The two ends of the first spring 204e are respectively fixed to the fixed block 204d and the support ring 104a.

[0046] Both the guide rod 204a and the scratch ring 203 are made of hard plastic to avoid being heated by the electromagnetic coil 202 and affecting the efficiency of the electromagnetic coil 202 in heating the steel bars. The guide rod 204a and the scratch ring 203 are arranged in two parts, symmetrically distributed on both sides of the scratch ring 203. The guide frame 204b and the fixed rod 204c position and guide the guide rod 204a to prevent it from shifting during the left and right movement. The first spring 204e applies a reset force to the guide rod 204a and the scratch ring 203. When the scratch ring 203 completes a scratch operation, the first spring 204e pushes the guide rod 204a and the scratch ring 203 to reset, which is convenient for subsequent scratch operations.

[0047] The inner side of the scratch ring 203 is inclined, so that it is convenient to push the scraps attached to the inner wall of the fixing ring 201 to the position of the blanking plate 106 when the scratch ring 203 moves.

[0048] An ejector ring 207 is fixed on the inner side of the buffer ring 205, and anti-blocking holes M are opened around it. When the scratch ring 203 completes a scratch operation and is reset, some impurities that fall down leak out from the anti-blocking holes M to prevent the impurities from being stuck between the ejector ring 207 and the scratch ring 203 for a long time, affecting subsequent use. The ejector ring 207 has a certain buffering effect to prevent a large collision between the two when the scratch ring 203 is reset, affecting its service life.

[0049] The driving member 206 includes a fixed frame 206a, a slide plate 206b, a traction block 206c, a second spring 206d and a reset rod 206e. The fixed frame 206a is fixed to the top and bottom of the inner wall of the scratch ring 203, the slide plate 206b slides in the fixed frame 206a, the traction block 206c is fixed to the bottom of the slide plate 206b, the two ends of the second spring 206d are respectively fixed to the inner wall of the fixed frame 206a and the slide plate 206b, the reset rod 206e is fixed to the inner wall of the fixed ring 201, and the traction block 206c is provided with an inclined groove K that cooperates with it, and the old pipe 105 is provided with a traction hole V at the top and bottom.

[0050] The slide plate 206b moves in the fixed frame 206a, and the end of the traction block 206c is inclined away from the side of the travel direction of the old pipe 105. The second spring 206d applies a force to the slide plate 206b and the traction block 206c in the direction of the old pipe 105, so as to facilitate their clamping in the traction hole V, thereby driving the traction block 206c and the scratch ring 203 to move through the movement of the old pipe 105, and cleaning the debris attached to the inner wall of the fixed ring 201 through the scratch ring 203.

[0051] The reset rod 206e is L-shaped. When the scratch ring 203 and the traction block 206c move to a position close to the edge of the inner wall of the fixed ring 201, the end of the reset rod 206e extends into the inclined groove K, thereby pushing the traction block 206c away from the traction hole V, so that it is separated from the traction hole V. At this time, the traction block 206c and the scratch ring 203 lose traction, and the scratch ring 203 is pushed to reset by the first spring 204e, which is convenient for subsequent operations.

[0052] The auxiliary assembly 200 further includes a hydraulic breaker 207 , which is fixed to the top and bottom of the inner wall of the fuselage 101 .

[0053] A person skilled in the art may replace the hydraulic breaker 207 with other equipment capable of drilling holes on the surface of the old pipe 105, which is configured to be retractable for drilling holes, and is set to an intermittent drilling operation in the external program so that the traction holes V are spaced apart at a larger interval, thereby adjusting the frequency of the scratching of the scratch ring 203 by adjusting the spacing of the holes. The operation of the hydraulic breaker 207 and the drilling are both prior arts, and a person skilled in the art may set them as required. A person skilled in the art also knows the working principle, which will not be elaborated here.

[0054] The auxiliary component 200 also includes a shield brush 208, which is evenly distributed on the inner wall of the fuselage 101. The shield brush 208 is set on one side of the propulsion head 102 to scratch the surface of the old pipe 105 entering the fuselage 101 to prevent excessive mud on the surface of the old pipe 105 from entering the fuselage 101, which will cause great inconvenience to subsequent cleaning.

[0055] Example 3

[0056] Reference Figures 1 to 8 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0057] Specifically, a launching well and a receiving well are excavated, and the pipe biting machine assembly 100 and its supporting equipment are installed in the launching well;

[0058] Performing an excavation operation, the soil around the old pipe 105 is excavated by the propulsion head 102 during the propulsion process, and the old pipe 105 enters the fuselage 101;

[0059] The old pipe 105 is crushed by the crushing head 103, and the steel bars in the old pipe 105 are heated and softened by the electromagnetic coil 202;

[0060] When in use, the propulsion head 102 and the fuselage 101 place the old pipe 105 inside during the movement, and then the old pipe 105 is slowly crushed by the crushing head 103. During this process, the positioning ring 104b will be located in the old pipe 105, and the multiple hinged plates 104d around it will extend outward to support the old pipe 105 from the inside, thereby achieving a multi-directional positioning effect, so that the old pipe 105 can be in a centered position when moving forward. The hydraulic rod 104f is hinged with a support plate, which makes it more convenient to apply a top force to the hinged plate 104d. The support pad 104e contacts the inner wall of the old pipe 105 to play a buffering effect and avoid damage to the hinged plate 104d caused by hard contact. At the same time, the steel bar structure inside the old pipe 105 is heated by the electromagnetic coil 202, so that the crushing head 103 can perform the crushing operation more efficiently, and it can also avoid excessively long steel bars from being stirred into the crushing head 103 and causing damage to it.

[0061] During the movement of the old pipe 105, the traction block 206c will be stuck in the traction hole V, thereby driving the traction block 206c and the scratch ring 203 to move through the movement of the old pipe 105, and cleaning the debris attached to the inner wall of the fixed ring 201 through the scratch ring 203. When the scratch ring 203 and the traction block 206c move to a position close to the edge of the inner wall of the fixed ring 201, the end of the reset rod 206e extends into the inclined groove K, thereby pushing the traction block 206c away from the traction hole V to separate it from the traction hole V. At this time, the traction block 206c and the scratch ring 203 lose traction, and the scratch ring 203 is pushed to reset by the first spring 204e, which is convenient for continuous scratch cleaning operations.

[0062] The crushed waste is transported out, and new pipes are laid synchronously while the pipe biting machine assembly 100 is moving.

Claims

1. A reinforced concrete pipe biting machine for urban renewal, characterized by: include, A pipe biting machine assembly (100) comprises a body (101), a propulsion head (102), a crushing head (103), a support member (104) and an old pipe (105), wherein the propulsion head (102) is arranged at the end of the body (101), the crushing head (103) is arranged in the body (101), the support member (104) is fixed in the body (101), and the old pipe (105) is located in the body (101); and The auxiliary component (200) is arranged in the fuselage (101), and comprises a fixing ring (201), an electromagnetic coil (202), a scratch ring (203), a guide member (204), a buffer ring (205) and a driving member (206); the fixing ring (201) is fixed in the fuselage (101); the electromagnetic coil (202) is wound in the fixing ring (201); the scratch ring (203) slides in the fixing ring (201); the guide member (204) is fixed on both sides of the scratch ring (203); the buffer ring (205) is fixed on one side of the fixing ring (201); and the driving member (206) is arranged on the top of the inner wall of the fixing ring (201).

2. The reinforced concrete pipe biting machine for urban renewal according to claim 1, characterized in that: The tube biting machine assembly (100) further comprises a feed plate (106) and a feed conveyor belt (107), wherein the feed plate (106) is arranged at the bottom of the crushing head (103), and the feed conveyor belt (107) is fixed to the inner bottom wall of the machine body (101) and is located on one side of the feed plate (106).

3. The reinforced concrete pipe biting machine for urban renewal according to claim 2, characterized in that: The support member (104) comprises a support ring (104a) which is fixed in the machine body (101); the crushing head (103) is located in the support ring (104a); and a discharge port (S) is provided at the bottom of the support ring (104a).

4. The reinforced concrete pipe biting machine for urban renewal according to claim 3, characterized in that: The support member (104) further comprises a positioning ring (104b), a support rod (104c), a hinge plate (104d), a support pad (104e) and a hydraulic rod (104f); the positioning ring (104b) is located inside the fuselage (101); the support rod (104c) is fixed to one side of the positioning ring (104b), and the other end of the support rod (104c) is fixed to the inner wall of the fuselage (101); the hinge plate (104d) is hinged to the outside of the positioning ring (104b); the support pad (104e) is fixed to the end of the hinge plate (104d); and the two ends of the hydraulic rod (104f) are respectively fixed to the outside of the positioning ring (104b) and the hinge plate (104d).

5. The reinforced concrete pipe biting machine for urban renewal according to claim 4, characterized in that: The guide member (204) comprises a guide rod (204a), a guide frame (204b), a fixed rod (204c), a fixed block (204d) and a first spring (204e); the guide rod (204a) is fixed to both sides of the scratch ring (203); the guide frame (204b) is located on the surface of the guide rod (204a); two ends of the fixed rod (204c) are respectively fixed to the guide frame (204b) and the support ring (104a); the fixed block (204d) is fixed to the end of the guide rod (204a); and two ends of the first spring (204e) are respectively fixed to the fixed block (204d) and the support ring (104a).

6. The reinforced concrete pipe biting machine for urban renewal according to claim 5, characterized in that: An ejection ring (207) is fixed inside the buffer ring (205), and anti-blocking holes (M) are provided around the buffer ring (205).

7. The reinforced concrete pipe biting machine for urban renewal according to claim 6, characterized in that: The driving member (206) comprises a fixed frame (206a), a slide plate (206b), a traction block (206c), a second spring (206d) and a reset rod (206e); the fixed frame (206a) is fixed to the top and bottom of the inner wall of the scratch ring (203); the slide plate (206b) slides in the fixed frame (206a); the traction block (206c) is fixed to the bottom of the slide plate (206b); two ends of the second spring (206d) are respectively fixed to the inner wall of the fixed frame (206a) and the slide plate (206b); the reset rod (206e) is fixed to the inner wall of the fixed ring (201); a matching inclined groove (K) is provided inside the traction block (206c); and traction holes (V) are provided at the top and bottom of the old pipe (105).

8. The reinforced concrete pipe biting machine for urban renewal according to claim 7, characterized in that: The auxiliary assembly (200) further comprises a hydraulic breaker (207) which is fixed to the top and bottom of the inner wall of the fuselage (101).

9. The reinforced concrete pipe biting machine for urban renewal according to claim 8, characterized in that: The auxiliary component (200) further comprises shield brushes (208) which are evenly distributed on the inner wall of the fuselage (101).

10. A construction method of a reinforced concrete pipe biting machine for urban renewal, characterized in that: The reinforced concrete pipe biting machine for urban renewal according to any one of claims 1 to 9 further comprises the following steps: Excavating a launching well and a receiving well, and installing a pipe biting machine assembly (100) and its supporting equipment in the launching well; Performing an excavation operation, wherein the soil around the old pipe (105) is excavated away by the propulsion head (102) during the propulsion process, and the old pipe (105) enters the fuselage (101); The old pipe (105) is crushed by a crushing head (103), and the steel bars in the old pipe (105) are heated and softened by an electromagnetic coil (202); The crushed waste is transported out, and new pipes are laid synchronously while the pipe biting machine assembly (100) is moving.

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