Rock breaking pipe jacking machine and construction method thereof

Abstract

The rock breaking pipe jacking machine and the construction method thereof, which comprise a supporting base, a supporting mechanism fixedly arranged at the top end of the supporting base, a jacking mechanism slidingly arranged at the top end of the supporting mechanism, an adjusting mechanism installed on the inner wall of the jacking mechanism, and an unfolding mechanism fixedly arranged at the outer side of the adjusting mechanism. Through the mutual cooperation between the servo motor and the transmission screw rod and the moving guide block, the moving guide block can move close to or away from each other through the rotation of the transmission screw rod. The device can unfold the counterforce mechanism from the pipe jacking machine main body through the unfolding mechanism, and provide counterforce support for the hydraulic output rod without additional installation of the back wall, effectively solving the technical problem that the pipe jacking operation cannot be smoothly carried out due to the narrow space of the working well and the inability to install the back wall.

Description

Technical Field

[0001] This invention relates to the field of pipe jacking machine construction, and in particular to a rock crushing pipe jacking machine and its construction method. Background Technology

[0002] With the rapid development of urbanization and the continuous advancement of infrastructure construction, the demand for modern underground engineering is showing a rapid growth trend. Various underground engineering projects, such as urban subways, underground utility tunnels, and tunnels, are being carried out extensively throughout the country. These projects play a crucial role in alleviating urban traffic pressure, optimizing urban spatial layout, and enhancing the comprehensive carrying capacity of cities.

[0003] When applying for this invention, the applicant, after searching, discovered a Chinese patent disclosing "A High-Strength Rock Crushing Pipe Jacking Machine," application number "CN202511143602.7." This patent mainly utilizes a machine head and tail. The machine head is rotatably connected to a mounting frame with a cutter disc. A partition inside the machine head is rotatably connected to a bushing, and the bushing is rotatably connected to a drive shaft connected to the cutter disc. A motor on the partition meshes with a driving bevel gear on the drive shaft and driven bevel gears two and one on the bushing, causing them to drive crushing rollers two and one respectively. The bushing, through toothed grooves, gears, and connecting rods, drives a baffle to slide along a chute, cooperating with the transfer port and guide trough of the partition. An auger conveying pipe connected to the guide trough passes through the mounting plates of the machine head and tail, and is supported by a tail support. A collection box on the tail base cooperates with the auger conveying pipe. This pipe jacking machine uses cutter disc cutting and secondary crushing by double crushing rollers, combined with baffle control to extend the crushing time, improving the rock crushing effect, avoiding conveyor blockage, and is suitable for construction in high-strength rock formations.

[0004] Based on the aforementioned existing technology, it is known that existing pipe jacking machines require a back wall for initial reaction support during operation. However, since the diameter of many working shafts is only slightly longer than the overall length of the rock pipe jacking machine, the remaining space after the pipe jacking machine is hoisted into the working shaft is insufficient for installing equipment such as the back wall, hindering smooth tunneling and pipe jacking operations. The traditional improvement method is to directly weld a corresponding working platform to the outer wall of the pipe jacking machine for temporary installation of the hydraulic structure to provide reaction force. However, after the pipe jacking machine has tunneled to a certain extent, the welded platform needs to be removed before the machine can continue tunneling. Frequent welding and disassembly cause significant inconvenience and affect the efficiency of normal tunneling and pipe jacking. Summary of the Invention

[0005] In view of this, the present invention provides a rock breaking pipe jacking machine and its construction method. The main technical problem it solves is that after the pipe jacking machine is hoisted into the working shaft, the remaining space is insufficient to install equipment such as the back wall, which makes it impossible to carry out smooth tunneling and pipe jacking operations. The traditional improvement method is to directly weld the corresponding working platform to the outer wall of the pipe jacking machine to provide reaction force for the temporary installation of the hydraulic structure. However, since the welded platform needs to be removed after the pipe jacking machine has tunneled to a certain extent before the pipe jacking machine can continue to tunnel, the frequent welding and disassembly will cause significant inconvenience and affect the efficiency of normal tunneling and pipe jacking.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rock crushing pipe jacking machine and its construction method, comprising a support base, a support mechanism fixedly installed at the top of the support base, a lifting mechanism slidably installed at the top of the support mechanism, an adjustment structure installed on the inner wall of the lifting mechanism, an unfolding mechanism fixedly installed on the outer side of the adjustment mechanism, a reaction mechanism fixedly connected to the side of the unfolding mechanism away from the adjustment mechanism, the pipe jacking mechanism including a pipe jacking machine body, the adjustment mechanism including a mounting box, a servo motor, a transmission screw, and a moving guide block, two mounting boxes being provided, the two mounting boxes being symmetrically fixedly installed on the left and right sides of the inner wall of the pipe jacking machine body. The two placement boxes have openings facing outwards. The servo motor is fixedly mounted on one end of the placement box, and the transmission screw is rotatably mounted inside the placement box. The transmission screw is also fixedly mounted on the outer wall of the servo motor output shaft. The servo motor and the transmission screw together form a transmission structure. There are four moving guide blocks, with each pair of laterally adjacent moving guide blocks forming a group. The two groups of moving guide blocks are symmetrically slidably mounted inside the two placement boxes. Each group of moving guide blocks has a screw hole inside that matches the transmission screw. When the servo motor is in a state of driving the transmission screw to rotate, each group of moving guide blocks is in a state of being close to or far from each other.

[0007] By adopting the above technical solution, which uses a servo motor to drive the transmission screw in the adjustment mechanism to move the guide block, a precise power source is provided for the operation of the unfolding mechanism, and the position of the reaction mechanism is flexibly adjusted to meet the reaction support requirements in different construction scenarios.

[0008] As a further description of the above technical solution: the unfolding mechanism includes a connecting support plate, a positioning shaft, a first connecting rod, a second connecting rod, a connecting shaft, a first splicing support plate, and a second splicing support plate. The splicing support plate is fixedly disposed at one end of the moving guide block. The positioning shaft is rotatably disposed inside the connecting support plate. The first connecting rod is fixedly disposed on the outer wall of the positioning shaft. There are two splicing support plates in total. The other splicing support plate is fixedly disposed on the outer wall of the other moving guide block. The second connecting rod is installed on the inner side of the splicing support plate through the positioning shaft. The connecting shaft is installed at the intersection of the first connecting rod and the second connecting rod.

[0009] By adopting the above technical solution, which uses the linkage and rotating shaft in the unfolding mechanism, the linear movement of the moving guide block is transformed into the unfolding and retraction of the mechanism. This eliminates the need for additional complex drive components, simplifies the structure, and ensures the stability of the unfolding action.

[0010] As a further description of the above technical solution: the first splicing support plate is rotatably disposed at one end of the first connecting rod, the second splicing support plate is rotatably disposed at one end of the second connecting rod, the reaction mechanism includes a shielding baffle, the main body of the shielding baffle is an arc-shaped structure, under normal conditions, the shielding baffle is in the open state outside the shielding placement box, and the outer wall of the shielding baffle is provided with an arc, which is consistent with the outer wall arc of the pipe jacking machine body.

[0011] By adopting the above technical solution, including the use of an arc-shaped shielding baffle in the reaction mechanism, the internal components of the placement box can be effectively protected from external interference under normal conditions. Furthermore, because the curvature of the outer wall is consistent with the main body of the pipe jacking machine, it avoids jamming when the pipe jacking machine moves, ensuring the smooth operation of the equipment as a whole.

[0012] As a further description of the above technical solution: the reaction mechanism also includes a reaction bracket, a mounting side plate, a flipping baffle, and a hydraulic output rod. The reaction bracket is fixedly installed on the inner wall of the shielding baffle, and the mounting side plate is fixedly installed on the same side of the shielding baffle. There are four mounting side plates, wherein every two longitudinally adjacent mounting side plates form a group, and the two groups of mounting side plates are symmetrically fixedly installed on the inner walls of the two groups of shielding baffles.

[0013] By adopting the above technical solution, which uses the reaction support and grouped installation side plates in the reaction mechanism, a solid foundation is provided for the subsequent installation and support of the flipping baffle, ensuring the reliability of the reaction force transmission path and improving the overall load-bearing capacity of the equipment.

[0014] As a further description of the above technical solution: the flip baffle is provided in two places, and the two flip baffles are respectively hinged to the inner side of the two sets of mounting side plates. Under normal conditions, the flip baffle is in a state parallel to the shielding baffle, and the flip baffle is in a state of being in contact with the inner wall of the shielding baffle.

[0015] By adopting the above technical solution, which uses a flip-up baffle that is normally attached to and covers the inner wall of the baffle, the space occupied when the equipment is idle or moved is greatly reduced, and no additional parts need to be disassembled, thus improving the adaptability of the equipment in narrow working wells.

[0016] As a further description of the above technical solution: when the flip baffle is in the unfolded state, the flip baffle is perpendicular to the shielding baffle and in contact with the reaction support. The hydraulic output rod is fixedly installed at the end of the flip baffle away from the reaction support. The reaction support and the flip baffle together form a support structure for the hydraulic output rod.

[0017] By adopting the above technical solution, which involves the unfolding of the flip-over baffle and its contact with the reaction support, rigid support is provided for the hydraulic output rod, preventing component deformation during hydraulic operation, ensuring the efficiency of reaction force transmission, and ensuring the stable progress of tunneling and pipe jacking operations.

[0018] As a further description of the above technical solution: the lifting mechanism also includes a rotating cutter head, a tunneling cutter head, and anti-twist blocks. The rotating cutter head is rotatably disposed at one end of the main body of the pipe jacking machine. The tunneling cutter head is fixedly disposed on the side of the rotating cutter head away from the main body of the pipe jacking machine. There are two anti-twist blocks, which are symmetrically fixedly disposed on the front and rear sides of the outer wall of the main body of the pipe jacking machine.

[0019] By adopting the above technical solution, which combines the rotating cutter head, the tunneling cutter head, and the anti-twist block in the jacking mechanism, rock breaking and tunneling operations can be completed efficiently, and the main body of the pipe jacking machine can be prevented from twisting during the tunneling process, thus ensuring construction accuracy and safety.

[0020] As a further description of the above technical solution: the support mechanism includes a support guide, a mounting plate, mounting holes, a reaction force fixing component and a guide bracket. The support guide is provided in two places, and the two support guides are symmetrically fixed on the front and rear sides of the top surface of the support base. The support base and the support guide together form a guiding structure for the main body of the pipe jacking machine.

[0021] By adopting the above technical solution, which uses the support guide frame and support base in the support mechanism, stable support and precise guidance are provided for the main body of the pipe jacking machine, avoiding deviation when the pipe jacking machine moves and ensuring the accuracy of the tunneling path.

[0022] As a further description of the above technical solution: the mounting plate is fixedly installed on the outer wall of the support guide, the mounting hole is opened in the mounting plate, the reaction force fixing member is fixedly installed on the outer wall of the support guide, and the reaction force fixing member is used for hydraulic output rod reaction force support, the guide bracket is fixedly installed at one end of the support base, and the guide bracket is used to guide the tunneling movement of the main body of the pipe jacking machine, and the main body of the pipe jacking machine and other components are all located in the working shaft.

[0023] By adopting the above technical solution, and using the technical solution of mounting plate 1011, reaction fixing component 1013 and guide bracket 1014 in the support mechanism, the stable installation of the support mechanism, the reaction support of hydraulic output rod 5013 and the tunneling guidance of the main body 2 of the pipe jacking machine are realized. The multi-functional integration improves the construction efficiency.

[0024] This invention discloses a construction method for a rock breaking and pipe jacking machine, comprising the following steps:

[0025] S1: Place the support base stably in the preset position inside the working well. Fix the support guide frame to the front and rear sides of the top of the support base through the mounting holes on the mounting plate. At the same time, ensure that the guide bracket is fixed to one end of the support base to complete the assembly of the support guide structure. Then place the main body of the pipe jacking machine on the support guide structure. At this time, the adjustment mechanism, the unfolding mechanism and the reaction mechanism are all in the initial state.

[0026] S2: Start the lifting mechanism, so that the rotating cutter head at one end of the main body of the pipe jacking machine drives the tunneling cutter head to rotate. The tunneling cutter head performs crushing operations on the rock in front. The anti-torsion block on the outer wall of the main body of the pipe jacking machine restricts the torsional trend during the tunneling process, ensuring that the tunneling is carried out in the preset direction.

[0027] S3: When reaction force support is required, the servo motor in the adjustment mechanism is started. Its output shaft drives the transmission screw to rotate in the mounting box, which in turn drives each set of moving guide blocks to move closer to each other in the mounting box. The moving guide blocks drive the connecting support plate to move, and through the positioning shaft, the first and second connecting rods are driven to unfold under the action of the connecting shaft, pushing the reaction force mechanism to extend outward as a whole.

[0028] S4: After the reaction mechanism moves to the preset position, it flips the two flip baffles around the hinge points of the two sets of mounting side plates until the flip baffles and the shielding baffles are perpendicular and the flip baffles are in close contact with the reaction support.

[0029] S5: Activate the hydraulic output rod fixed at the end of the tilting baffle away from the reaction support, so that the hydraulic output rod extends and contacts the reaction fixing component on the outer wall of the support guide. Utilize the supporting effect of the reaction support and the tilting baffle to transmit the reaction force generated by the hydraulic output rod to the reaction fixing component, the support guide, and the support base in sequence, and finally convert it into the power for the main body of the pipe jacking machine to advance forward.

[0030] S6: After completing a certain distance of tunneling, close the hydraulic output rod to retract and reset it, and reverse the flip baffle to a state parallel to the shielding baffle and in contact with the inner wall; then start the servo motor to rotate in the opposite direction, driving the transmission screw to rotate in the opposite direction, so that the moving guide block drives the connecting support plate, the first connecting rod and the second connecting rod to retract, and return the reaction mechanism to the initial position, and the shielding baffle covers the outer opening of the installation box again.

[0031] By employing the above technical solution, the rock breaking and pipe jacking machine and its construction method of the present invention have at least the following beneficial effects:

[0032] 1. Compared with the prior art, this rock crushing pipe jacking machine and its construction method, by setting up components such as adjustment mechanism, unfolding mechanism and reaction mechanism, and through the mutual cooperation between servo motor, transmission screw and moving guide block, the moving guide block can move closer or further away from each other through the rotation of transmission screw. This device can unfold the reaction mechanism from inside the main body of the pipe jacking machine through unfolding mechanism, and can provide reaction support for hydraulic output rod without the need for additional back wall installation. It effectively solves the technical problem that the pipe jacking operation is difficult to carry out smoothly due to the narrow space of the working well and the inability to install a back wall.

[0033] 2. Compared with existing technologies, this rock breaking pipe jacking machine and its construction method, by setting up components such as shielding baffles, tilting baffles, and reaction supports, and through the mutual cooperation between the tilting baffles, the installation side plates, and the reaction supports, allows the tilting baffles to expand and contract through a hinged structure. This device can switch between reaction support and tunneling operations by contracting and expanding the reaction mechanism, eliminating the need for frequent welding and disassembly of the work platform as in traditional methods. This greatly reduces the auxiliary operation time during construction and significantly improves the efficiency of tunneling and pipe jacking.

[0034] 3. Compared with existing technologies, this rock breaking pipe jacking machine and its construction method, by setting up components such as support guides, guide brackets and anti-twist blocks, and through the mutual cooperation between the support guides, support base and guide brackets, enables the main body of the pipe jacking machine to move stably under the guidance of the support mechanism. This device can prevent the main body of the pipe jacking machine from twisting during excavation through anti-twist blocks, and ensure the accuracy of the excavation path through the guide structure. At the same time, the reaction mechanism is normally retracted and does not occupy extra space, which improves the adaptability and construction stability of the equipment in narrow working shafts. Attached Figure Description

[0035] Figure 1 This is a front view of the rock breaking pipe jacking machine and its construction method proposed in this invention.

[0036] Figure 2 This is a schematic diagram of the combined structure of the support guide and guide bracket of a rock crushing pipe jacking machine and its construction method proposed in this invention.

[0037] Figure 3 This is a schematic diagram of the overall right-side structure of a rock crushing pipe jacking machine and its construction method proposed in this invention;

[0038] Figure 4 This is a schematic diagram of the combined structure of the main body and anti-twist block of a rock crushing pipe jacking machine and its construction method proposed in this invention.

[0039] Figure 5 This is a top view schematic diagram of the overall structure of a rock breaking pipe jacking machine and its construction method proposed in this invention;

[0040] Figure 6 This is a schematic diagram of the combined structure of the connecting guide block and connecting support plate of a rock crushing pipe jacking machine and its construction method proposed in this invention;

[0041] Figure 7 This is a left-side structural schematic diagram of a rock breaking pipe jacking machine and its construction method proposed in this invention;

[0042] Figure 8 This invention provides a rock breaking and pipe jacking machine and its construction method. Figure 4 Enlarged structural diagram at point A in the middle.

[0043] Legend:

[0044] 1. Support base; 101. Support guide frame; 1011. Mounting plate; 1012. Mounting hole; 1013. Reaction fastener; 1014. Guide bracket; 2. Pipe jacking machine body; 201. Rotating cutter head; 2011. Tunneling cutter head; 2012. Anti-torsion block; 3. Mounting box; 301. Servo motor; 3011. Transmission screw; 3012. Moving guide block; 4. Connecting support plate; 401. Positioning shaft; 4011. First connecting rod; 4012. Second connecting rod; 4013. Connecting shaft; 4014. First splicing support plate; 4015. Second splicing support plate; 5. Shielding baffle; 501. Reaction bracket; 5011. Mounting side plate; 5012. Tilting baffle; 5013. Hydraulic output rod; 6. Working shaft. Detailed Implementation

[0045] Reference Figure 1 - Figure 8This invention provides a rock crushing pipe jacking machine and its construction method: a support base 1, a support mechanism fixedly installed at the top of the support base 1, a lifting mechanism slidably installed at the top of the support mechanism, an adjustment structure installed on the inner wall of the lifting mechanism, an unfolding mechanism fixedly installed on the outer side of the adjustment mechanism, and a reaction mechanism fixedly connected to the side of the unfolding mechanism away from the adjustment mechanism. The lifting mechanism includes a pipe jacking machine body 2, and the adjustment mechanism includes a mounting box 3, a servo motor 301, a transmission screw 3011, and a moving guide block 3012. Two mounting boxes 3 are provided, symmetrically fixedly installed on the left and right sides of the inner wall of the pipe jacking machine body 2, with the openings of both mounting boxes 3 facing outwards. The servo motor 301... 1. Fixedly installed at one end of the mounting box 3, the transmission screw 3011 is rotatably installed inside the mounting box 3, and the transmission screw 3011 is fixedly installed on the outer wall of the output shaft of the servo motor 301. The servo motor 301 and the transmission screw 3011 together form a transmission structure. There are four moving guide blocks 3012, of which every two horizontally adjacent moving guide blocks 3012 form a group, and the two groups of moving guide blocks 3012 are symmetrically slidably installed in the two sets of mounting boxes 3. Each group of moving guide blocks 3012 has a screw hole that matches the transmission screw 3011 inside. When the servo motor 301 is in the state of rotating and driving the transmission screw 3011, each group of moving guide blocks 3012 is in the state of being close to or far away from each other.

[0046] Furthermore, the unfolding mechanism includes a connecting support plate 4, a positioning shaft 401, a first connecting rod 4011, a second connecting rod 4012, a connecting shaft 4013, a first splicing support plate 4014, and a second splicing support plate 4015. The connecting support plate 4 is fixedly installed at one end of the moving guide block 3012. The positioning shaft 401 is rotatably installed inside the connecting support plate 4. The first connecting rod 4011 is fixedly installed on the outer wall of the positioning shaft 401. There are two connecting support plates 4. The other connecting support plate 4 is fixedly installed on the outer wall of the other moving guide block 3012. The second connecting rod 4012 is installed on the inner side of the connecting support plate 4 via the positioning shaft 401. The connecting shaft 4013 is installed at the intersection of the first connecting rod 4011 and the second connecting rod 4012.

[0047] Furthermore, the first splicing support plate 4014 is rotatably mounted on one end of the first connecting rod 4011, and the second splicing support plate 4015 is rotatably mounted on one end of the second connecting rod 4012. The reaction mechanism includes a shielding baffle 5. The main body of the shielding baffle 5 is an arc-shaped structure. Under normal conditions, the shielding baffle 5 is in the open state outside the shielding installation box 3, and the outer wall of the shielding baffle 5 is provided with an arc, which is consistent with the outer wall arc of the pipe jacking machine body 2.

[0048] Furthermore, the reaction mechanism also includes a reaction support 501, a mounting side plate 5011, a flipping baffle 5012, and a hydraulic output rod 5013. The reaction support 501 is fixedly installed on the inner wall of the shielding baffle 5, and the mounting side plate 5011 is fixedly installed on the same side of the shielding baffle 5. There are four mounting side plates 5011, with each pair of longitudinally adjacent mounting side plates 5011 forming a group, and the two groups of mounting side plates 5011 are symmetrically fixedly installed on the inner walls of the two groups of shielding baffles 5.

[0049] Furthermore, there are two flip baffles 5012, which are respectively hinged to the inner side of the two sets of mounting side plates 5011. Under normal conditions, the flip baffles 5012 are parallel to the shielding baffles 5 and are in contact with the inner wall of the shielding baffles 5.

[0050] Furthermore, when the flip baffle 5012 is in the unfolded state, it is perpendicular to the shielding baffle 5 and in contact with the reaction support 501. The hydraulic output rod 5013 is fixedly installed at the end of the flip baffle 5012 away from the reaction support 501. The reaction support 501 and the flip baffle 5012 together form a support structure for the hydraulic output rod 5013.

[0051] Furthermore, the lifting mechanism also includes a rotating cutter head 201, a tunneling cutter head 2011, and an anti-twist block 2012. The rotating cutter head 201 is rotatably mounted at one end of the main body 2 of the pipe jacking machine. The tunneling cutter head 2011 is fixedly mounted on the side of the rotating cutter head 201 away from the main body 2 of the pipe jacking machine. There are two anti-twist blocks 2012, which are symmetrically fixed on the front and rear sides of the outer wall of the main body 2 of the pipe jacking machine.

[0052] Furthermore, the support mechanism includes a support guide 101, a mounting plate 1011, a mounting hole 1012, a reaction force fixing component 1013, and a guide bracket 1014. The support guide 101 is provided in two places, and the two support guides 101 are symmetrically fixed on the front and rear sides of the top surface of the support base 1. The support base 1 and the support guide 101 together form a guiding structure for the main body 2 of the pipe jacking machine.

[0053] Furthermore, the mounting plate 1011 is fixedly installed on the outer wall of the support guide 101, the mounting hole 1012 is opened in the mounting plate 1011, the reaction force fixing member 1013 is fixedly installed on the outer wall of the support guide 101, and the reaction force fixing member 1013 is used for the reaction force support of the hydraulic output rod 5013. The guide bracket 1014 is fixedly installed at one end of the support base 1, and the guide bracket 1014 is used to guide the tunneling movement of the main body 2 of the pipe jacking machine. The main body 2 of the pipe jacking machine and other components are all located in the working shaft 6.

[0054] This invention discloses a construction method for a rock breaking and pipe jacking machine, comprising the following steps:

[0055] S1: Place the support base 1 stably in the preset position inside the working well 6. Fix the support guide 101 to the front and rear sides of the top face of the support base 1 through the mounting holes 1012 on the mounting plate 1011. At the same time, ensure that the guide bracket 1014 is fixed to one end of the support base 1 to complete the assembly of the support guide structure. Then place the main body 2 of the pipe jacking machine on the support guide structure. At this time, the adjustment mechanism, the unfolding mechanism and the reaction mechanism are all in the initial state.

[0056] S2: Start the lifting mechanism, so that the rotating cutter head 201 at one end of the main body 2 of the pipe jacking machine drives the tunneling cutter head 2011 to rotate. The tunneling cutter head 2011 performs crushing operation on the rock in front. The anti-twist block 2012 on the outer wall of the main body 2 of the pipe jacking machine restricts the torsion trend during the tunneling process and ensures that the tunneling is carried out in the preset direction.

[0057] S3: When reaction force support is required, the servo motor 301 in the adjustment mechanism is started. Its output shaft drives the transmission screw 3011 to rotate in the mounting box 3, thereby driving each set of moving guide blocks 3012 to move closer to each other in the mounting box 3. The moving guide blocks 3012 drive the connecting support plate 4 to move, and through the positioning shaft 401, drive the first connecting rod 4011 and the second connecting rod 4012 to unfold under the action of the connecting shaft 4013, pushing the reaction force mechanism to extend outward as a whole.

[0058] S4: After the reaction mechanism moves to the preset position, the two flip baffles 5012 are flipped around the hinge points of the two sets of mounting side plates 5011 until the flip baffles 5012 and the shielding baffles 5 are perpendicular to each other, and the flip baffles 5012 and the reaction brackets 501 are tightly abutted.

[0059] S5: Activate the hydraulic output rod 5013 fixed at the end of the tilting baffle 5012 away from the reaction support 501, so that the hydraulic output rod 5013 extends and contacts the reaction fixing member 1013 on the outer wall of the support guide 101. Utilize the supporting effect of the reaction support 501 and the tilting baffle 5012 to transmit the reaction force generated by the hydraulic output rod 5013 to the reaction fixing member 1013, the support guide 101, and the support base 1 in sequence, and finally convert it into the power for the main body 2 of the pipe jacking machine to advance forward.

[0060] S6: After completing a certain distance of tunneling, close the hydraulic output rod 5013 to retract and reset it, and reverse the flip baffle 5012 to a state that is parallel to the shielding baffle 5 and fits against the inner wall; then start the servo motor 301 to rotate in the opposite direction, driving the transmission screw 3011 to rotate in the opposite direction, so that the moving guide block 3012 drives the connecting support plate 4, the first connecting rod 4011 and the second connecting rod 4012 to retract, and return the reaction mechanism to the initial position, and the shielding baffle 5 re-covers the outer opening of the mounting box 3.

[0061] Working principle: First, the support base 1 is placed stably in the preset position inside the working well 6. Then, the support guide 101 in the support mechanism is fixedly connected to the front and rear sides of the top surface of the support base 1 through the mounting holes 1012 on the mounting plate 1011. At the same time, the guide bracket 1014 is fixed at one end of the support base 1. At this time, the support base 1, the support guide 101, and the guide bracket 1014 together form the support and guide structure of the main body 2 of the pipe jacking machine. Then, the main body 2 of the pipe jacking machine is placed on the support and guide structure. At this time, the adjustment mechanism, the unfolding mechanism, and the reaction mechanism are all in the initial state. The shielding baffle 5 in the reaction mechanism is in the state of opening on the outside of the shielding placement box 3. The flipping baffle 5012 is parallel to the shielding baffle 5 and fits against its inner wall.

[0062] When the pipe jacking mechanism is started, the rotating cutter head 201 at one end of the pipe jacking machine body 2 begins to rotate. The rotating cutter head 201 drives the tunneling cutter head 2011 on the side away from the pipe jacking machine body 2 to rotate synchronously. The tunneling cutter head 2011 performs rock breaking operations in front. At the same time, the anti-twist blocks 2012 on the front and rear sides of the outer wall of the pipe jacking machine body 2 restrict the torsional tendency of the pipe jacking machine body 2 during the tunneling process, ensuring that the pipe jacking machine body 2 tunnels stably in the preset direction.

[0063] When it is necessary to provide reaction force support for the main body 2 of the pipe jacking machine to advance the tunneling, the servo motor 301 in the adjustment mechanism is started. The output shaft of the servo motor 301 rotates and drives the transmission screw 3011 fixed on its outer wall to rotate synchronously inside the mounting box 3. Since the moving guide block 3012 has a screw hole that matches the transmission screw 3011, and each set of moving guide blocks 3012 is symmetrically slidably arranged in the mounting box 3, when the transmission screw 3011 rotates, it drives each set of moving guide blocks 3012 to move away from each other along the axis of the transmission screw 3011 in the mounting box 3.

[0064] As the moving guide blocks 3012 approach each other, they drive the connecting support plate 4 fixed at one end to move synchronously. When the connecting support plate 4 moves, it drives the first connecting rod 4011 to move through the internally rotating positioning shaft 401. At the same time, the connecting support plate 4 on the outer wall of the other moving guide block 3012 drives the second connecting rod 4012 to move through the positioning shaft 401. The first connecting rod 4011 and the second connecting rod 4012 gradually unfold under the connection action of the connecting shaft 4013 at the intersection, thereby pushing the first splicing support plate 4014 at one end of the first connecting rod 4011 and the second splicing support plate 4015 at one end of the second connecting rod 4012 to move outward.

[0065] When the first splicing support plate 4014 and the second splicing support plate 4015 move outward, they drive the reaction mechanism connected to them to extend outward as a whole, so that the shielding baffle 5 gradually gets rid of the shielding state of the outer opening of the placement box 3. After the reaction mechanism moves to the preset position, the two flip baffles 5012 are flipped around the hinge points of the two sets of mounting side plates 5011 respectively, until the flip baffle 5012 is perpendicular to the shielding baffle 5 and the flip baffle 5012 is tightly abutted against the reaction support 501.

[0066] The hydraulic output rod 5013, which is fixed to the end of the tilting baffle 5012 away from the reaction support 501, is activated. The hydraulic output rod 5013 extends and its end contacts the reaction fixing member 1013 on the outer wall of the support guide 101. At this time, the reaction support 501 and the tilting baffle 5012 together provide stable support for the hydraulic output rod 5013. The reaction force generated by the operation of the hydraulic output rod 5013 is transmitted to the support guide 101 through the reaction fixing member 1013, and then transmitted to the support base 1 by the support guide 101, and finally converted into the power to push the main body 2 of the pipe jacking machine forward.

[0067] After the main body 2 of the pipe jacking machine completes a certain distance of excavation, the hydraulic output rod 5013 is closed, causing the hydraulic output rod 5013 to retract and reset. Then, the flipping baffle 5012 is flipped in the opposite direction until it is parallel to the shielding baffle 5 and fits against the inner wall. Then, the servo motor 301 is started to rotate in the opposite direction. The servo motor 301 drives the transmission screw 3011 to rotate in the opposite direction, which in turn drives each set of moving guide blocks 3012 to move in the same direction within the placement box 3. The moving guide blocks 3012 drive the connecting support plate 4, the first connecting rod 4011 and the second connecting rod 4012 to retract and reset, so that the reaction mechanism is returned to its initial position. The shielding baffle 5 then covers the outer opening of the placement box 3 again. After that, the main body 2 of the pipe jacking machine continues to excavate forward under the guidance of the support mechanism. The above operation steps are repeated until the entire pipe jacking construction task is completed.

[0068] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rock crushing pipe jacking machine, comprising a support base (1), characterized in that: A support mechanism is fixedly installed at the top of the support base (1), and a jacking mechanism is slidably installed at the top of the support mechanism. An adjustment mechanism is installed on the inner wall of the jacking mechanism, and an unfolding mechanism is fixedly installed on the outer side of the adjustment mechanism. A reaction mechanism is fixedly connected to the side of the unfolding mechanism away from the adjustment mechanism. The jacking mechanism includes the jacking machine body (2). The adjustment mechanism includes a mounting box (3), a servo motor (301), a transmission screw (3011), and a moving guide block (3012). There are two mounting boxes (3). The two mounting boxes (3) are symmetrically fixed on the left and right sides of the inner wall of the jacking machine body (2), and the openings of the two mounting boxes (3) face outward. The servo motor (301) is fixedly installed at one end of the mounting box (3). The transmission screw (3011) is rotatably disposed in the mounting box (3), and the transmission screw (3011) is fixedly disposed on the outer wall of the output shaft of the servo motor (301). The servo motor (301) and the transmission screw (3011) together form a transmission structure. There are four moving guide blocks (3012). Each pair of moving guide blocks (3012) that are laterally adjacent form a group. The two groups of moving guide blocks (3012) are symmetrically slidably disposed in the two groups of mounting boxes (3). Each group of moving guide blocks (3012) has a screw hole that matches the transmission screw (3011) inside. The servo motor (301) is in the state of rotating and driving the transmission screw (3011). Each group of moving guide blocks (3012) is in the state of being close to or far away from each other. The unfolding mechanism is fixedly installed on the outer wall of a set of movable guide blocks (3012). The reaction mechanism includes a shielding baffle (5). Under normal conditions, the shielding baffle (5) is in the open state outside the shielding installation box (3). The reaction mechanism also includes a reaction support (501), a mounting side plate (5011), a flipping baffle (5012), and a hydraulic output rod (5013). The reaction support (501) is fixedly installed on the inner wall of the shielding baffle (5). The mounting side plate (5011) is fixedly installed on the inner wall of the shielding baffle (5). The flipping baffle (5012) is hinged to the mounting side plate (5011). The hydraulic output rod (5013) is fixedly installed at the end of the flipping baffle (5012) away from the reaction support (501). The reaction support (501) and the flipping baffle (5012) together form a support structure for the hydraulic output rod (5013).

2. The rock crushing and pipe jacking machine according to claim 1, characterized in that: The unfolding mechanism includes a connecting support plate (4), a positioning shaft (401), a first connecting rod (4011), a second connecting rod (4012), a connecting shaft (4013), a first splicing support plate (4014), and a second splicing support plate (4015). The connecting support plate (4) is fixedly installed on the outer wall of the moving guide block (3012). The positioning shaft (401) is rotatably installed inside the connecting support plate (4). The first connecting rod (4011) is fixedly installed on the outer wall of the positioning shaft (401). There are two connecting support plates (4). The other connecting support plate (4) is fixedly installed on the outer wall of the other moving guide block (3012). The second connecting rod (4012) is fixedly installed on the outer wall of the other moving guide block (3012). The first connecting rod (4011) and the second connecting rod (4012) are connected by a connecting shaft (4013) installed on the inner side of the connecting support plate (4) via a positioning pivot (401). The first splicing support plate (4014) is rotatably disposed at one end of the first connecting rod (4011), and the second splicing support plate (4015) is rotatably disposed at one end of the second connecting rod (4012). The first splicing support plate (4014) and the second splicing support plate (4015) are respectively connected to a shielding baffle (5). The main body of the shielding baffle (5) is an arc-shaped structure, and the outer wall of the shielding baffle (5) is provided with an arc, which is consistent with the outer wall arc of the main body (2) of the pipe jacking machine.

3. A rock crushing and pipe jacking machine according to claim 2, characterized in that: The mounting side plate (5011) is provided in four places, wherein each pair of longitudinally adjacent mounting side plates (5011) forms a group, and the two groups of mounting side plates (5011) are symmetrically fixed on the inner wall of the two shielding baffles (5).

4. A rock crushing and pipe jacking machine according to claim 3, characterized in that: The flip baffle (5012) is provided in two places. The two flip baffles (5012) are respectively hinged to the inner side of the two sets of mounting side plates (5011). Under normal conditions, the flip baffle (5012) is parallel to the shielding baffle (5) and the flip baffle (5012) is in contact with the inner wall of the shielding baffle (5).

5. A rock crushing and pipe jacking machine according to claim 4, characterized in that: When the flip-up baffle (5012) is in the unfolded state, the flip-up baffle (5012) is perpendicular to the shielding baffle (5) and is in contact with the reaction support (501).

6. A rock crushing and pipe jacking machine according to claim 5, characterized in that: The pipe jacking mechanism also includes a rotating cutter head (201), a tunneling cutter head (2011), and an anti-twist block (2012). The rotating cutter head (201) is rotatably mounted at one end of the pipe jacking machine body (2). The tunneling cutter head (2011) is fixedly mounted on the side of the rotating cutter head (201) away from the pipe jacking machine body (2). There are two anti-twist blocks (2012), which are symmetrically fixed on the front and rear sides of the outer wall of the pipe jacking machine body (2).

7. A rock crushing and pipe jacking machine according to claim 6, characterized in that: The support mechanism includes a support guide (101), a mounting plate (1011), mounting holes (1012), a reaction fixing component (1013), and a guide bracket (1014). The support guide (101) is provided in two locations, symmetrically fixed on the front and rear sides of the top surface of the support base (1). The support base (1) and the support guide (101) together form a guiding structure for the main body (2) of the pipe jacking machine. The mounting plate (1011) is fixedly installed on the support guide (1012). 1) The mounting hole (1012) is opened in the mounting plate (1011) on the outer wall. The reaction force fixing member (1013) is fixedly installed on the outer wall of the support guide (101) and the reaction force fixing member (1013) is used for the reaction force support of the hydraulic output rod (5013). The guide bracket (1014) is fixedly installed at one end of the support base (1) and the guide bracket (1014) is used to guide the tunneling movement of the main body (2) of the pipe jacking machine. The main body (2) of the pipe jacking machine and the other components are all located in the working shaft (6).

8. The construction method of a rock crushing pipe jacking machine according to claim 7, characterized in that, Specifically, the following steps are included: S1: Place the support base (1) stably in the preset position inside the working well (6), and fix the support guide (101) to the front and rear sides of the top of the support base (1) through the mounting holes (1012) on the mounting plate (1011). At the same time, ensure that the guide bracket (1014) is fixed to one end of the support base (1) to complete the assembly of the support guide structure. Then place the main body (2) of the pipe jacking machine on the support guide structure. At this time, the adjustment mechanism, the unfolding mechanism and the reaction mechanism are all in the initial state. S2: Start the lifting mechanism, so that the rotating cutter head (201) at one end of the main body (2) of the pipe jacking machine drives the tunneling cutter head (2011) to rotate. The tunneling cutter head (2011) performs crushing operation on the rock in front. The anti-twist block (2012) on the outer wall of the main body (2) of the pipe jacking machine restricts the torsional trend during the tunneling process and ensures that the tunneling is carried out in the preset direction. S3: When a reaction force support is required, the servo motor (301) in the adjustment mechanism is started. Its output shaft drives the transmission screw (3011) to rotate in the mounting box (3), thereby driving each set of moving guide blocks (3012) to move closer to each other in the mounting box (3). The moving guide blocks (3012) drive the connecting support plate (4) to move. Through the positioning shaft (401), the first connecting rod (4011) and the second connecting rod (4012) are driven to unfold under the action of the connecting shaft (4013), pushing the reaction force mechanism to extend outward as a whole. S4: After the reaction mechanism moves to the preset position, the two flip baffles (5012) are flipped around the hinge points of the two sets of mounting side plates (5011) until the flip baffles (5012) and the shielding baffles (5) are perpendicular to each other, and the flip baffles (5012) and the reaction brackets (501) are tightly abutted. S5: Start the hydraulic output rod (5013) fixed at the end of the flip baffle (5012) away from the reaction support (501), so that the hydraulic output rod (5013) extends and contacts the reaction fixing part (1013) on the outer wall of the support guide (101). Utilize the supporting effect of the reaction support (501) and the flip baffle (5012) to transmit the reaction force generated by the hydraulic output rod (5013) to the reaction fixing part (1013), the support guide (101), and the support base (1) in sequence, and finally convert it into the power for the main body (2) of the pipe jacking machine to advance forward. S6: After completing a certain distance of tunneling, close the hydraulic output rod (5013) to retract and reset it, and flip the flip baffle (5012) in the opposite direction until it is parallel to the shielding baffle (5) and fits against the inner wall; then start the servo motor (301) to rotate in the opposite direction, drive the transmission screw (3011) to rotate in the opposite direction, so that the moving guide block (3012) drives the connecting support plate (4), the first connecting rod (4011) and the second connecting rod (4012) to retract, and return the reaction mechanism to the initial position. The shielding baffle (5) then covers the outer opening of the mounting box (3) again.

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