Pipe joint pushing device for pipe jacking construction

Abstract

The invention provides a pipe joint pushing device for pipe jacking construction. The pipe joint pushing device comprises a base, a positioning table and a driving assembly. The base is used for being fixed in a starting well; the positioning table is fixedly arranged on the upper side of the base, a driving disc is arranged on the front side of the positioning table, a plurality of driving shafts are arranged on the driving disc, and each driving shaft is in sliding connection with the positioning table; the driving assembly is in transmission connection with the multiple driving shafts and used for driving the multiple driving shafts to synchronously move so that the driving disc can horizontally move in the front-back direction and push the pipe joint into a hole reserved in the reaction wall, and the purpose of providing driving force for pipe jacking construction is achieved. According to the pipe joint pushing device for pipe jacking construction, due to the fact that the driving shafts are arranged in the axial direction of the driving disc, and the driving disc is used for being coaxially arranged with the pipe joint, the contact area of the driving shafts and the driving disc can be increased, contact points are evenly distributed, the stability of the pipe joint in the translation process is improved, fatigue damage is avoided, and the service life of the pipe joint is prolonged. The service life of the device is prolonged, and continuous use of the device is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of pipe jacking construction technology, specifically relating to a pipe section pushing device for pipe jacking construction. Background Technology

[0002] In the field of urban underground infrastructure construction, pipe jacking technology is an important trenchless construction method, widely used in the laying and renovation of pipelines for water supply, drainage, gas, and communications. Its core principle is to use a jacking device to push prefabricated pipe sections into the soil layer in segments along a preset trajectory, effectively avoiding the large-scale interference to surface traffic, buildings, and the surrounding environment caused by traditional excavation methods.

[0003] In the prior art, the jacking device used to push the pipe section includes a jacking plate that abuts against the pipe end and a drive shaft connected to the jacking plate; the drive shaft is powered by a drive device such as a motor or cylinder to realize the linear movement of the jacking plate and the technical purpose of pushing the precast pipe section into the soil layer.

[0004] The inventors discovered that because the contact area between the drive shaft and the push plate is much smaller than the contact area between the push plate and the pipe section, the connection between the drive shaft and the push plate is prone to shaking and fatigue damage during the translation of the push plate, resulting in increased on-site noise and reduced service life of the device. Summary of the Invention

[0005] This application provides a pipe section jacking device for pipe jacking construction, which aims to increase the contact area between the drive shaft and the jacking plate, and to make the contact points evenly distributed, thereby improving the stability of the jacking plate translation process, avoiding fatigue damage, extending the service life of the device, and ensuring continuous use of the device.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A pipe section pushing device for pipe jacking construction is provided, comprising: A base for fixing inside the launching shaft, and it is located behind the reaction wall of the launching shaft; A positioning platform is fixedly mounted on the upper side of the base; the front side of the positioning platform has a drive disk, and the drive disk has multiple drive shafts spaced circumferentially thereon, each of the drive shafts being slidably connected to the positioning platform in the front-rear direction; and A drive assembly, which is connected to multiple drive shafts, is used to drive the multiple drive shafts to move synchronously so that the drive disc moves in the front-to-back direction; The front side of the drive disk is used to connect with the socket end of the pipe section, and the pipe section and the drive disk are coaxially arranged.

[0007] In one possible implementation, the driving component includes: A drive gear is rotatably connected to the positioning platform, with both its axial direction and rotational direction parallel to the front-rear direction; the drive gear is connected to a rotational drive component for driving its rotation; and Multiple driven gears are arranged at intervals around the driving gear, each driven gear meshing with the driving gear and rotatably connected to the positioning table; Each driven gear is coaxially provided with a transmission nut; multiple driven gears correspond one-to-one with multiple drive shafts, and each drive shaft adopts a screw structure that is threadedly connected to the transmission nut, so that when the driven gear rotates, the drive shaft moves synchronously in the front-back direction.

[0008] In one possible implementation, the rotation drive component includes: The driven helical gear is coaxially connected to the driving gear; A drive shaft is rotatably connected to the positioning platform in the vertical direction. An upper helical gear and a lower helical gear are coaxially connected to its upper and lower ends, respectively, and the upper helical gear meshes with the driven helical gear. A rotating motor is fixedly mounted on the base, with its power output shaft parallel to the front-to-back direction, and a drive helical gear that meshes with the lower helical gear is coaxially connected to its power output shaft. When the rotating motor starts, the driving helical gear drives the lower helical gear to rotate, thereby rotating the transmission shaft; at the same time, the upper helical gear drives the driven helical gear to rotate, thereby rotating the driving gear.

[0009] In one possible implementation, the drive disk includes: A push plate, disposed on the front side of the positioning platform and connected to the drive shaft; and A transmission disc is disposed on the front side of the push plate, and is detachably connected to the push plate, and the transmission disc has a degree of freedom to move relative to the push plate in the front-back direction; The push plate has multiple turntables spaced apart along its circumference; each turntable is located between the push plate and the transmission plate, and has multiple elastic buffers on the side facing the transmission plate. When the turntable rotates, at least one of the elastic buffer members is located outside the transmission disk to be in a non-deformable state; at the same time, at least one of the elastic buffer members is located between the push plate and the transmission disk and abuts against the transmission disk. There is a synchronous transmission structure between the push plate and the power output shaft of the rotating motor; when the rotating motor starts, the synchronous transmission structure is used to drive the multiple turntables to rotate synchronously.

[0010] In one possible implementation, the synchronous transmission structure includes: The mounting bracket is connected to the push plate, and a central gear coaxially arranged with the push plate is rotatably connected to it, and a central wheel is coaxially connected to the central gear; the mounting bracket also has a bottom wheel slidably sleeved on the power output shaft of the rotating motor, and the bottom wheel and the central wheel are connected by an inner synchronous belt; Multiple pulleys, each corresponding to one of the multiple turntables, with each pulley coaxially connected to its corresponding turntable; and Multiple follower pulleys are spaced around the central pulley and correspond one-to-one with the multiple pulleys; the corresponding follower pulleys and pulleys are connected by an external synchronous belt, and each follower pulley is coaxially connected with an external gear that meshes with the central gear; The outer wall of the power output shaft of the rotating motor is provided with a plurality of strip-shaped grooves spaced apart along its circumference, and each strip-shaped groove extends along the power output shaft of the rotating motor; the inner wall of the bottom wheel has a protrusion, which is adapted to be embedded in the strip-shaped groove so that the bottom wheel rotates synchronously when the rotating motor is started.

[0011] In one possible implementation, the elastic buffer includes: A connecting rod, fixedly connected to the front side of the turntable, and extending in the front-rear direction; and A bushing is slidably fitted around the outer periphery of the connecting rod, and a buffer spring is provided between the bushing and the turntable; the buffer spring is fitted around the outer periphery of the bushing, and its two ends are respectively connected to the bushing and the turntable; The bushing has a rounded corner structure at its front end. When the bushing moves from the outside to the inside of the transmission disk, the rounded corner structure is adapted to connect with the edge of the rear side of the transmission disk so that the buffer spring changes from a non-deformed state to an elastically compressed state.

[0012] In one possible implementation, the push plate has a forward-extending connecting shaft at its center; the transmission plate has a through hole at its center for the connecting shaft to pass through, and the extended end of the connecting shaft has a threaded groove, in which a limiting bolt adapted to abut against the front side of the transmission plate is coaxially connected.

[0013] In one possible implementation, a connecting block is connected to the center of the driven gear. The connecting block has a T-shaped cross-section and has a clearance hole that passes through the driven gear along the axial direction and communicates with the transmission nut. The rear side of the positioning platform is provided with a mounting groove suitable for embedding the connecting block, and the connecting block has at least two locking plates spaced apart along its circumference. The locking plate is used to connect with the rear side of the positioning platform to cooperate with the bottom of the mounting groove to clamp the connecting block and prevent the connecting block from detaching from the mounting groove.

[0014] In one possible implementation, the pipe section pushing device further includes: Two sliding platforms are arranged side by side in the left-right direction, both located on the front side of the positioning platform. Each of the two sliding platforms has a translational frame that is slidably connected to it in the front-back direction. An elastic reset member is provided between the translational frame and the sliding platform. The translational frame has an arc-shaped member for surrounding the outer periphery of the pipe section. The arc-shaped member has at least two mating members spaced apart in its circumference. The mating members are used to abut against the outer wall of the pipe section to limit the radial movement of the pipe section relative to the arc-shaped member. A synchronous drive component is connected to the two slides to drive the two slides to move towards each other or away from each other; The synchronous drive component is used to drive the two slides to move towards each other or away from each other until both arc-shaped parts are coaxially arranged with the pipe section, so that the docking part can abut against the outer wall of the pipe section and restrict the radial movement of the pipe section relative to the arc-shaped parts.

[0015] In one possible implementation, the arc-shaped member has a plurality of threaded holes corresponding one-to-one with the plurality of mating members, each threaded hole being radially through the arc-shaped member, and the mating member employing a screw structure threadedly connected to the threaded holes.

[0016] The beneficial effects of the pipe jacking device for pipe jacking construction provided in this embodiment are as follows: During the synchronous movement of multiple drive shafts driven by the drive assembly, the pipe section coaxially connected to the drive disc can receive thrust and gradually enter the reserved hole in the reaction wall, realizing the pipe jacking operation. Furthermore, since the multiple drive shafts are spaced apart circumferentially along the drive disc, the thrust provided by the drive shafts to the pipe section is evenly distributed. Moreover, compared to the operation method of transmitting driving force with a single drive shaft, this embodiment provides a method of synchronous operation with multiple drive shafts, which on the one hand increases the contact area and ensures the stability of the jacking process; on the other hand, the contact points are spaced apart circumferentially along the end face of the pipe section socket, which can effectively extend the service life of the drive shafts, thereby ensuring the stability of this device in continuous use scenarios.

[0017] Compared with existing technologies, it can increase the contact area between the drive shaft and the drive disc, and make the contact points evenly distributed, thereby improving the stability of the pipe section translation process, avoiding fatigue damage, extending the service life of the device, and ensuring continuous use of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural schematic diagram of the pipe section jacking device for pipe jacking construction provided in the embodiments of this application; Figure 2 for Figure 1 Front view; Figure 3 For along Figure 2 Cross-sectional view of line AA in the middle; Figure 4 A partial structural schematic diagram of the pipe section jacking device provided in the embodiments of this application (the protective cover behind the positioning platform is hidden for ease of display). Figure 5 This is a three-dimensional structural diagram of the positioning stage used in the embodiments of this application; Figure 6 This is an exploded view of the positioning stage used in the embodiments of this application. Figure 7 This is an exploded view of the driven gear and transmission nut used in the embodiments of this application. Figure 8 This is an exploded view of the two locking plates used in the embodiments of this application; Figure 9 This is a three-dimensional structural diagram of the rotation drive component used in the embodiments of this application; Figure 10 This is a three-dimensional structural diagram of the synchronous transmission structure used in the embodiments of this application; Figure 11 This is an exploded view of the drive disk used in the embodiments of this application; Figure 12 This is a three-dimensional structural diagram of the push plate used in the embodiments of this application; Figure 13 This is a three-dimensional structural diagram of the mounting bracket used in the embodiments of this application from a cross-sectional perspective; Figure 14 This is an exploded view of the turntable and elastic buffer used in the embodiments of this application; Figure 15 This is a partial cross-sectional view of the turntable and elastic buffer used in the embodiments of this application in a combined state; Figure 16This is a three-dimensional structural diagram of the slide table and synchronous drive component used in the embodiments of this application in a combined state; Figure 17 This is a three-dimensional structural diagram of the slide table used in the embodiments of this application; Figure 18 This is a cross-sectional view of the slide used in the embodiments of this application; Figure 19 This is a cross-sectional structural diagram of the translational frame and arc-shaped component used in the embodiments of this application in the combined state; Explanation of reference numerals in the attached drawings: 1. Base; 2. Positioning platform; 21. Mounting slot; 3. Drive assembly; 31. Drive gear; 32. Driven gear; 321. Transmission nut; 322. Connecting block; 3221. Clearance hole; 3222. Locking plate; 4. Drive disc; 41. Pushing disc; 411. Turntable; 412. Connecting shaft; 4121. Threaded groove; 4122. Limit bolt; 42. Transmission disc; 421. Through hole; 5. Drive shaft; 6. Rotation drive component; 61. Driven helical gear; 62. Transmission shaft; 621. Upper helical gear; 622. Lower helical gear; 6 3. Rotating motor; 631. Driving helical gear; 632. Strip groove; 7. Elastic buffer; 71. Connecting rod; 72. Bushing; 721. Buffer spring; 8. Synchronous transmission structure; 81. Mounting bracket; 811. Central gear; 812. Central wheel; 813. Bottom wheel; 8131. Protrusion; 814. Inner synchronous belt; 82. Pulley; 83. Follower wheel; 831. Outer synchronous belt; 832. External gear; 9. Slide table; 91. Translation frame; 92. Elastic reset component; 93. Arc-shaped component; 931. Threaded hole; 94. Connecting component; 10. Synchronous drive component. Detailed Implementation

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0021] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Please refer to the following: Figures 1 to 19 The pipe section jacking device for pipe jacking construction provided in this application will now be described.

[0025] It should be noted first that the pipe section jacking device provided in this application is used in pipe jacking construction operations, specifically set in the starting shaft (also known as the "starting working shaft", which is the pit where the pipe section enters the construction area) of the pipe jacking construction; for ease of description, the direction of pipe section jacking is defined as forward, and the position where the pipe section enters is the reaction wall of the starting shaft; that is, the reaction wall has a reserved hole for the pipe section to be jacked and inserted.

[0026] The pipe jacking device for pipe jacking construction proposed in this application includes a base 1, a positioning platform 2, and a drive assembly 3.

[0027] The base 1 is used to fix itself inside the launching shaft, and it is located behind the reaction wall of the launching shaft. In this embodiment, the base 1 is fixed to the bottom surface of the launching shaft using a multi-point support structure, specifically: as follows... Figure 1 and Figure 4 As shown, the base 1 has a through hole running vertically; a mounting nut is coaxially fixed at this through hole, and an adjusting bolt, threadedly connected to the mounting nut, is slidably inserted into the through hole. The upper end of the adjusting bolt is on the upper side of the base 1, and the lower end can move to the lower side of the base 1 and support it on the bottom surface of the launching well, thereby supporting the base 1. The base 1 has multiple sets of through holes, and correspondingly multiple sets of mounting nuts and adjusting bolt structures, to support the base 1 at multiple points and adapt to launching wells in different ground environments, ensuring that the upper surface of the base 1 can remain horizontal.

[0028] The positioning platform 2 is fixedly installed on the upper side of the base 1, specifically as follows: Figure 3 and Figure 4As shown, the positioning platform 2 is fixed above the base 1 and is connected to the upper side of the base 1 by at least two support rods to form a reserved gap between the upper side of the base 1 and the lower side of the positioning platform 2. When performing jacking pipe installation for different heights, the initial height of the positioning platform 2 can be adjusted by replacing the support rods.

[0029] The positioning platform 2 has a drive disk 4 on its front side, which has multiple drive shafts 5 spaced apart along its circumference. Each drive shaft 5 is slidably connected to the positioning platform 2 in the front-back direction to achieve a sliding connection between the positioning platform 2 and the drive disk 4 in the front-back direction. In actual use, when the base 1 is fixed in the launching well, the drive disk 4 is coaxially arranged with the reserved hole on the reaction wall; and the front side of the drive disk 4 is used to connect with the socket end of the pipe section, so that the pipe section and the drive disk 4 are coaxially arranged, and the multiple drive shafts 5 are spaced apart around the central axis of the pipe section; in the optimal embodiment, in the axial direction of the pipe section, each drive shaft 5 coincides with the socket end face of the pipe section.

[0030] The drive assembly 3 is connected to multiple drive shafts 5 for synchronous movement of the multiple drive shafts 5, so that the drive disc 4 moves in the front-to-back direction.

[0031] The beneficial effects of the pipe jacking device for pipe jacking construction provided in this embodiment are as follows: During the synchronous movement of multiple drive shafts 5 driven by the drive assembly 3, the pipe section coaxially connected to the drive disc 4 can receive thrust and gradually enter the reserved hole in the reaction wall, realizing the pipe jacking operation. Furthermore, since the multiple drive shafts 5 are spaced apart circumferentially along the drive disc 4, the thrust provided by the drive shafts 5 to the pipe section is evenly distributed. Moreover, compared to the operation method of transmitting driving force with a single drive shaft 5, this embodiment provides a method of synchronous operation with multiple drive shafts 5 to replace it. On the one hand, this increases the contact area, ensuring the stability of the jacking process; on the other hand, the contact points are spaced apart circumferentially along the end face of the pipe section socket, effectively extending the service life of the drive shafts 5, thereby ensuring the stability of this device in continuous use scenarios.

[0032] Compared with existing technologies, it can increase the contact area between the drive shaft 5 and the drive disk 4, and make the contact points evenly distributed, thereby improving the stability of the pipe section translation process, avoiding fatigue damage, extending the service life of the device, and ensuring the continuous use of the device.

[0033] In some embodiments, such as Figure 1 , Figure 4 and Figure 5 As shown, the drive assembly 3 includes a drive gear 31 and multiple driven gears 32.

[0034] The drive gear 31 is rotatably connected to the positioning table 2, and its axial direction and rotational axis are parallel to the front and rear directions. The drive gear 31 is driven by a rotational drive component 6 for driving its rotation. The rotational drive component 6 can be a motor directly connected to the drive gear 31, or it can be other drive structure designs (to achieve other drive requirements).

[0035] Multiple driven gears 32 are arranged at intervals around the driving gear 31. Each driven gear 32 meshes with the driving gear 31 and is rotatably connected to the positioning table 2, so that when the driving gear 31 rotates under the drive of the rotational drive member 6, the multiple driven gears 32 rotate synchronously and in the same direction.

[0036] Each driven gear 32 is coaxially equipped with a transmission nut 321, which rotates synchronously with the driven gear 32. The center of the driven gear 32 and the corresponding position on the positioning platform 2 have openings to avoid the central hole of the transmission nut 321. Specifically, the center of the driven gear 32 has a shaped hole that matches the outer circumference of the transmission nut 321. The transmission nut 321 is fixedly embedded in this shaped hole, and its six outer walls abut against the six inner walls of the shaped hole. In practice, to enhance structural strength, the contact surfaces of the transmission nut 321 and the driven gear 32 can be welded. Furthermore, a circular hole is provided at the junction of the positioning platform 2 and the driven gear 32, and this circular hole is coaxially connected to the central axis of the transmission nut 321.

[0037] Multiple driven gears 32 correspond one-to-one with multiple drive shafts 5, and each drive shaft 5 adopts a screw structure that can be threadedly connected to the corresponding transmission nut 321, and the combination of drive shaft 5 and transmission nut 321 is realized by means of this threaded connection.

[0038] By adopting the above technical solution, when the driven gear 32 rotates with the driving gear 31, the corresponding drive shaft 5 moves synchronously in the front-back direction to form a driving force in the front-back direction.

[0039] In some embodiments, such as Figure 3 and Figure 9 As shown, the rotation drive component 6 includes a driven helical gear 61, a transmission shaft 62, and a rotation motor 63.

[0040] The driven helical gear 61 is coaxially connected to the driving gear 31. This connection is a fixed coaxial connection to ensure that the rotation of the driving gear 31 and the driven helical gear 61 is synchronized.

[0041] The drive shaft 62 is rotatably connected to the positioning table 2 in the up-down direction. The upper helical gear 621 and the lower helical gear 622 are coaxially connected at its upper and lower ends, respectively, and the upper helical gear 621 meshes with the driven helical gear 61.

[0042] The rotating motor 63 is fixedly mounted on the base 1. Its power output shaft is parallel to the front and rear directions, and its power output shaft is coaxially connected to the driving helical gear 631 that meshes with the lower helical gear 622.

[0043] By adopting the above technical solution, when the rotary motor 63 starts, the driving helical gear 631 drives the lower helical gear 622 to rotate, thereby causing the transmission shaft 62 to rotate; at the same time, the upper helical gear 621 drives the driven helical gear 61 to rotate, thereby causing the driving gear 31 to rotate. Since the power output shaft of the rotary motor 63 is externally mounted, it can also perform other mechanical actions.

[0044] In some embodiments, such as Figures 10 to 15 As shown, the drive disk 4 includes a push disk 41 and a transmission disk 42.

[0045] The push plate 41 is located on the front side of the positioning platform 2 and is connected to the drive shaft 5. That is, each drive shaft 5 is connected to the rear side of the push plate 41, and multiple drive shafts 5 are arranged at intervals around the central axis of the push plate 41.

[0046] The transmission disc 42 is located on the front side of the push plate 41 and is detachably connected to the push plate 41. In actual use, the transmission disc 42 can be selected according to the outer diameter of the pipe section to be constructed. The transmission disc 42 has a degree of freedom to move relative to the push plate 41 in the front-back direction. The range of movement is limited. On the one hand, this ensures that the transmission disc 42 can transmit the forward movement force provided by the push plate 41. On the other hand, the slight movement of the transmission disc 42 relative to the push plate 41 can reduce the impact of vibration.

[0047] To ensure the stability of the aforementioned vibration reduction process, the push plate 41 has multiple turntables 411 spaced apart along its circumference; each turntable 411 is located between the push plate 41 and the transmission plate 42, and multiple elastic buffers 7 are provided on the side facing the transmission plate 42.

[0048] In this embodiment, the push plate 41 has a sinking groove structure that corresponds one-to-one with multiple turntables 411, and the sinking groove structure penetrates the outer wall of the push plate 41, so that after the turntables 411 are embedded in the sinking groove and rotated, part of the turntables 411 extend to the outside of the sinking groove, and during the rotation of the turntables 411, multiple elastic buffers 7 pass through the outside of the sinking groove in sequence to achieve the technical purpose of detaching from the transmission plate 42.

[0049] When the turntable 411 rotates, at least one elastic buffer 7 is located outside the transmission disc 42 to be in a non-deformed state, thereby enabling a "recovery deformation" state during continuous operation, interrupting the state of long-term stress fatigue, and improving the service life of the elastic buffer 7.

[0050] Meanwhile, at least one elastic buffer 7 is located between the push plate 41 and the transmission plate 42, and abuts against the transmission plate 42 to achieve its buffering purpose and effectively improve the reliability of the vibration reduction process.

[0051] Furthermore, there is a synchronous transmission structure 8 between the push plate 41 and the power output shaft of the rotating motor 63; when the rotating motor 63 starts, the synchronous transmission structure 8 is used to drive multiple turntables 411 to rotate synchronously. The purpose is to reduce the number of driving components, control the production cost and operating cost of the whole machine, and improve the market competitiveness of this device.

[0052] In some embodiments, such as Figures 10 to 13 As shown, the synchronous transmission structure 8 includes a mounting bracket 81, multiple pulleys 82, and multiple follower pulleys 83.

[0053] Mounting bracket 81 is connected to push plate 41, specifically to the rear side of push plate 41.

[0054] A central gear 811 is rotatably connected to the mounting bracket 81. Specifically, the central gear 811 is rotatably connected to the outer wall of the mounting bracket 81, and after the mounting bracket 81 and the push plate 41 are connected, the central gear 811 is coaxially arranged with the push plate 41. Furthermore, a central wheel 812 is coaxially connected to the central gear 811. The central wheel 812 is located inside the mounting bracket 81 and can rotate synchronously with the rotation of the central gear 811.

[0055] The mounting bracket 81 also has a bottom wheel 813, which is also located inside the mounting bracket 81 and below the center wheel 812. The bottom wheel 813 has an opening extending along the power output axis of the rotating motor 63, meaning it has a ring-shaped structure and is fitted onto the power output shaft of the rotating motor 63, allowing it to move freely relative to the power output shaft. Simultaneously, the outer wall of the power output shaft of the rotating motor 63 has multiple circumferentially spaced slots 632, each extending along the power output shaft. The inner wall of the opening of the bottom wheel 813 has a protrusion 8131, which is adapted to fit into the slot 632, so that when the rotating motor 63 starts, the bottom wheel 813 rotates synchronously (this transmission process does not affect the translation of the bottom wheel 813, and therefore does not affect the translation of the mounting bracket 81 or the push plate 41).

[0056] It should be noted that the protrusion 8131 also has multiple protrusions, and each protrusion is fitted into a corresponding slot 632.

[0057] Based on the above, the bottom wheel 813 and the center wheel 812 are connected by an inner synchronous belt 814, that is, the inner synchronous belt 814 wraps around the outer periphery of the bottom wheel 813 and the center wheel 812 and is in a taut state, so that when the bottom wheel 813 rotates, the center wheel 812 rotates synchronously.

[0058] Multiple pulleys 82 correspond one-to-one with multiple turntables 411. Each pulley 82 is coaxially connected to the corresponding turntable 411 and is located behind the push plate 41. Specifically, the push plate 41 has openings that correspond one-to-one with the multiple turntables 411. The rotation shaft of each turntable 411 extends to the rear of the push plate 41 through the corresponding opening, and the corresponding pulley 82 is coaxially connected to the extended end of the rotation shaft of the turntable 411.

[0059] Multiple follower wheels 83 are spaced around the central wheel 812 and correspond one-to-one with multiple pulleys 82. Specifically, each follower wheel 83 is located between the central wheel 812 and the corresponding pulley 82. The corresponding follower wheel 83 and the pulley 82 are connected by an external synchronous belt 831, and each follower wheel 83 is coaxially connected to an external gear 832 that meshes with the central gear 811.

[0060] It should be noted that the mounting bracket 81 and the push plate 41 are detachably connected. Specifically, the mounting bracket 81 consists of two side plates and multiple connecting pipes. The two side plates are arranged in parallel, and the multiple connecting pipes are spaced apart along the length of the side plates. Each side plate has multiple pre-drilled holes corresponding to the multiple connecting pipes, so that after the side plates and connecting pipes are combined, the pre-drilled holes and the inner cavities of the connecting pipes combine to form multiple pre-drilled openings spaced apart along the length of the mounting bracket 81. Correspondingly, the rear side of the push plate 41 has multiple connecting screws suitable for being inserted into the multiple pre-drilled openings. Each connecting screw can extend from the corresponding pre-drilled opening, and the extended part is threadedly connected to a connecting nut that abuts against the outer side of the mounting bracket 81.

[0061] The reason why the mounting bracket 81 and the push plate 41 are designed to be detachably connected is that in actual use, different center gears 811 need to be replaced according to different vibration reduction requirements, thereby changing the corresponding transmission ratio. While ensuring that multiple turntables 411 rotate at the same speed and in the same direction, the rotation speed of each turntable 411 is changed to adapt to different vibration reduction scenarios.

[0062] In summary, the transmission process described above can be summarized as follows: When the rotating motor 63 starts, its power output shaft rotates at a constant speed. Based on this, due to the engagement between the protrusion 8131 and the slot 632, the bottom wheel 813 rotates synchronously. Then, since the bottom wheel 813 is connected to the center wheel 812 via the inner synchronous belt 814, the center wheel 812 also rotates synchronously, thereby causing the center gear 811 to rotate. After the center gear 811 rotates, the multiple external gears 832 meshing with it rotate synchronously, thereby driving the multiple follower wheels 83 to rotate synchronously. Since each follower wheel 83 is connected to the pulley 82 via the outer synchronous belt 831, the pulley 82 also rotates synchronously, achieving the technical objective of driving multiple turntables 411 to rotate simultaneously, in the same direction, and at the same speed.

[0063] In some embodiments, such as Figure 14 and Figure 15 As shown, the elastic buffer 7 includes a connecting rod 71 and a bushing 72.

[0064] The connecting rod 71 is fixedly connected to the front side of the turntable 411 and extends in the front-back direction, specifically forward.

[0065] The bushing 72 is slidably sleeved on the outer periphery of the connecting rod 71 in the front-back direction, and there is a buffer spring 721 between it and the turntable 411; the buffer spring 721 is sleeved on the outer periphery of the bushing 72, and its two ends are respectively connected to the bushing 72 and the turntable 411.

[0066] During the jacking operation, there is a deformation between the bushing 72 and the connecting rod 71 that moves axially, so that the buffer spring 721 can play a role, that is, the vibration transmitted from the tube section to the transmission disc 42 can be absorbed by the buffer spring 721.

[0067] In order to facilitate the rotation of the bushing 72 with the turntable 411 between the transmission disk 42 and the push disk 41, the front end of the bushing 72 adopts a rounded corner structure; when the bushing 72 moves from the outside to the inside of the transmission disk 42, the rounded corner structure is suitable for contacting the edge of the rear side of the transmission disk 42 so that the buffer spring 721 is compressed, thereby changing from a non-deformed state to an elastic compression state.

[0068] In some embodiments, such as Figure 11 As shown, the center of the push plate 41 has a forward-extending connecting shaft 412; the center of the transmission plate 42 has a through hole 421 for the connecting shaft 412 to pass through, and the extended end of the connecting shaft 412 is provided with a threaded groove 4121.

[0069] The threaded groove 4121 is connected to a limiting bolt 4122. The head of the limiting bolt 4122 can abut against the front side of the transmission plate 42 to prevent the transmission plate 42 from disengaging from the push plate 41.

[0070] Furthermore, the connecting shaft 412 also has a limiting disc extending radially outward. The limiting disc and the head of the limiting bolt 4122 cooperate to limit the range of movement of the transmission disc 42 relative to the push disc 41 in the front-back direction.

[0071] In some embodiments, such as Figures 6 to 8 As shown, a connecting block 322 is connected to the center of the driven gear 32. The connecting block 322 has a T-shaped cross-section and has a clearance hole 3221 that runs through the driven gear 32 axially and communicates with the transmission nut 321.

[0072] It should be noted that the clearance hole 3221 is coaxially connected with the irregular hole mentioned above; and after the driven gear 32 and the transmission nut 321 are connected, the clearance hole 3221 is also connected with the center hole of the transmission nut 321.

[0073] The rear side of the positioning platform 2 is provided with a mounting groove 21 suitable for embedding the connecting block 322. The connecting block 322 has at least two locking plates 3222 spaced apart along its circumference.

[0074] In actual use, the locking plate 3222 is used to connect with the rear side of the positioning table 2 to cooperate with the bottom of the mounting groove 21 to clamp the connecting block 322 and prevent the connecting block 322 from disengaging from the mounting groove 21.

[0075] It should be noted that a protective cover is detachably connected to the rear side of the positioning stage 2. When the protective cover is fixed to the rear side of the positioning stage 2, it can effectively protect the drive assembly 3 and related parts, and prevent external dust from affecting the corresponding transmission process.

[0076] In some embodiments, such as Figures 16 to 19 As shown, the pipe section jacking device also includes two slides 9 and a synchronous drive component 10.

[0077] Both slides 9 are set in front of the positioning platform 2 and are arranged side by side in the left and right direction. During construction, the pipe section needs to be inserted between the two slides 9 to complete the alignment with the reserved hole on the reaction wall and the alignment with the drive plate 4.

[0078] Each of the two adjacent sides of the slide table 9 has a translation frame 91 that is slidably connected to it in the front-back direction. An elastic reset member 92 is provided between the translation frame 91 and the slide table 9. Specifically, the translation frame 91 has a slider that engages with a groove on the inner side of the slide table 9 to achieve a sliding connection between the translation frame 91 and the slide table 9. Based on this, the elastic reset member 92 is a reset spring fixedly installed in the groove, used to provide the translation frame 91 with an elastic degree of freedom to move backward. The reason for making the translation frame 91 slidable is that this allows the structure to operate throughout the entire jacking process of the pipe section. That is, when the socket end of the pipe section passes through the translation frame 91, the pipe section will not separate from the translation frame 91. Instead, the movement of the translation frame 91 ensures that the relevant components (i.e., the combination structure of the arc-shaped member 93 and the connecting member 94) remain in contact with the pipe section.

[0079] The translation frame 91 has an arc-shaped component 93. By moving the position of the slide table 9, the arc-shaped component 93 can be made to surround the outer circumference of the pipe section, that is, to be coaxially arranged with the pipe section.

[0080] The arc-shaped member 93 has at least two mating members 94, which are spaced apart circumferentially along the arc-shaped member 93 and are used to abut against the outer wall of the pipe section to limit the radial movement of the pipe section relative to the arc-shaped member 93.

[0081] The synchronous drive component 10 is connected to the two slides 9 to drive the two slides 9 to move towards each other or away from each other. Specifically, the synchronous drive component 10 includes two drive nuts connected to the two slides 9, and a bidirectional screw rotatably connected to the positioning table 2.

[0082] The bidirectional screw has two threaded sections with opposite thread directions. The two threaded sections are respectively threaded to two drive nuts, so as to achieve the technical purpose of the two drive nuts moving towards each other or away from each other when it rotates, thereby realizing the adjustment of the distance between the two slides 9.

[0083] In actual use, the synchronous drive component 10 is used to drive the two slides 9 to move towards each other or away from each other so that the two arc-shaped parts 93 are coaxially arranged with the pipe section; in this state, each docking part 94 can be adjusted to abut against the outer wall of the pipe section, thereby restricting the radial movement of the pipe section relative to the arc-shaped part 93.

[0084] In order to achieve the movement of the docking member 94 relative to the arc-shaped member 93, in some embodiments, such as Figures 16 to 19 As shown, the arc-shaped part 93 has multiple threaded holes 931 that correspond one-to-one with multiple mating parts 94, and each threaded hole 931 passes through the radial direction of the arc-shaped part 93.

[0085] Based on the foregoing, the mating part 94 adopts a screw structure that is threadedly connected to the threaded hole 931; in actual use, the mating part 94 can be rotated to move along the axial direction of the threaded hole 931 to get closer to or away from the central axis of the arc-shaped part 93.

[0086] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pipe section jacking device for pipe jacking construction, characterized in that, include: A base for fixing inside the launching shaft, and it is located behind the reaction wall of the launching shaft; A positioning platform is fixedly mounted on the upper side of the base; the front side of the positioning platform has a drive disk, and the drive disk has multiple drive shafts spaced circumferentially thereon, each of the drive shafts being slidably connected to the positioning platform in the front-rear direction; and A drive assembly, which is connected to multiple drive shafts, is used to drive the multiple drive shafts to move synchronously so that the drive disc moves in the front-to-back direction; The front side of the drive disk is used to connect with the socket end of the pipe section, and the pipe section and the drive disk are coaxially arranged.

2. The pipe section pushing device for pipe jacking construction as described in claim 1, characterized in that, The driving component includes: A drive gear is rotatably connected to the positioning platform, with both its axial direction and rotational direction parallel to the front-rear direction; the drive gear is connected to a rotational drive component for driving its rotation; and Multiple driven gears are arranged at intervals around the driving gear, each driven gear meshing with the driving gear and rotatably connected to the positioning table; Each driven gear is coaxially provided with a transmission nut; multiple driven gears correspond one-to-one with multiple drive shafts, and each drive shaft adopts a screw structure that is threadedly connected to the transmission nut, so that when the driven gear rotates, the drive shaft moves synchronously in the front-back direction.

3. The pipe section pushing device for pipe jacking construction as described in claim 2, characterized in that, The rotation drive component includes: The driven helical gear is coaxially connected to the driving gear; A drive shaft is rotatably connected to the positioning platform in the vertical direction. An upper helical gear and a lower helical gear are coaxially connected to its upper and lower ends, respectively, and the upper helical gear meshes with the driven helical gear. A rotating motor is fixedly mounted on the base, with its power output shaft parallel to the front-to-back direction, and a drive helical gear that meshes with the lower helical gear is coaxially connected to its power output shaft. When the rotating motor starts, the driving helical gear drives the lower helical gear to rotate, thereby rotating the transmission shaft; at the same time, the upper helical gear drives the driven helical gear to rotate, thereby rotating the driving gear.

4. The pipe section pushing device for pipe jacking construction as described in claim 3, characterized in that, The drive disk includes: A push plate, disposed on the front side of the positioning platform and connected to the drive shaft; and A transmission disc is disposed on the front side of the push plate, and is detachably connected to the push plate, and the transmission disc has a degree of freedom to move relative to the push plate in the front-back direction; The push plate has multiple turntables spaced apart along its circumference; each turntable is located between the push plate and the transmission plate, and has multiple elastic buffers on the side facing the transmission plate. When the turntable rotates, at least one of the elastic buffer members is located outside the transmission disk to be in a non-deformable state; at the same time, at least one of the elastic buffer members is located between the push plate and the transmission disk and abuts against the transmission disk. There is a synchronous transmission structure between the push plate and the power output shaft of the rotating motor; when the rotating motor starts, the synchronous transmission structure is used to drive the multiple turntables to rotate synchronously.

5. The pipe section pushing device for pipe jacking construction as described in claim 4, characterized in that, The synchronous transmission structure includes: The mounting bracket is connected to the push plate, and a central gear coaxially arranged with the push plate is rotatably connected to it, and a central wheel is coaxially connected to the central gear; the mounting bracket also has a bottom wheel slidably sleeved on the power output shaft of the rotating motor, and the bottom wheel and the central wheel are connected by an inner synchronous belt; Multiple pulleys, each corresponding to one of the multiple turntables, with each pulley coaxially connected to its corresponding turntable; and Multiple follower pulleys are spaced around the central pulley and correspond one-to-one with the multiple pulleys; the corresponding follower pulleys and pulleys are connected by an external synchronous belt, and each follower pulley is coaxially connected with an external gear that meshes with the central gear; The outer wall of the power output shaft of the rotating motor is provided with a plurality of strip-shaped grooves spaced apart along its circumference, and each strip-shaped groove extends along the power output shaft of the rotating motor; the inner wall of the bottom wheel has a protrusion, which is adapted to be embedded in the strip-shaped groove so that the bottom wheel rotates synchronously when the rotating motor is started.

6. The pipe section pushing device for pipe jacking construction as described in claim 4, characterized in that, The elastic buffer includes: A connecting rod, fixedly connected to the front side of the turntable, and extending in the front-rear direction; and A bushing is slidably fitted around the outer periphery of the connecting rod, and a buffer spring is provided between the bushing and the turntable; the buffer spring is fitted around the outer periphery of the bushing, and its two ends are respectively connected to the bushing and the turntable; The bushing has a rounded corner structure at its front end. When the bushing moves from the outside to the inside of the transmission disk, the rounded corner structure is adapted to connect with the edge of the rear side of the transmission disk so that the buffer spring changes from a non-deformed state to an elastically compressed state.

7. The pipe section pushing device for pipe jacking construction as described in claim 4, characterized in that, The center of the push plate has a connecting shaft extending forward; the center of the transmission plate has a through hole for the connecting shaft to pass through, and the extended end of the connecting shaft has a threaded groove, in which a limiting bolt suitable for abutting against the front side of the transmission plate is coaxially connected.

8. The pipe section pushing device for pipe jacking construction as described in claim 2, characterized in that, A connecting block is connected to the center of the driven gear. The connecting block has a T-shaped cross-section and has a clearance hole that runs through the driven gear along the axial direction and communicates with the transmission nut. The rear side of the positioning platform is provided with a mounting groove suitable for embedding the connecting block, and the connecting block has at least two locking plates spaced apart along its circumference. The locking plate is used to connect with the rear side of the positioning platform to cooperate with the bottom of the mounting groove to clamp the connecting block and prevent the connecting block from detaching from the mounting groove.

9. The pipe section pushing device for pipe jacking construction as described in claim 1, characterized in that, The pipe section pushing device also includes: Two sliding platforms are arranged side by side in the left-right direction, both located on the front side of the positioning platform. Each of the two sliding platforms has a translational frame that is slidably connected to it in the front-back direction. An elastic reset member is provided between the translational frame and the sliding platform. The translational frame has an arc-shaped member for surrounding the outer periphery of the pipe section. The arc-shaped member has at least two mating members spaced apart in its circumference. The mating members are used to abut against the outer wall of the pipe section to limit the radial movement of the pipe section relative to the arc-shaped member. A synchronous drive component is connected to the two slides to drive the two slides to move towards each other or away from each other; The synchronous drive component is used to drive the two slides to move towards each other or away from each other until both arc-shaped parts are coaxially arranged with the pipe section, so that the docking part can abut against the outer wall of the pipe section and restrict the radial movement of the pipe section relative to the arc-shaped parts.

10. The pipe section pushing device for pipe jacking construction as described in claim 9, characterized in that, The arc-shaped component has multiple threaded holes that correspond one-to-one with the multiple mating components. Each threaded hole is radially connected to the arc-shaped component, and the mating component adopts a screw structure that is threadedly connected to the threaded hole.

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