A large-section rectangular jacking pipe retaining device

Abstract

The present invention relates to the technical field of tunnel engineering construction, and specifically to a large-section rectangular jacking pipe retreat preventing device, comprising: two cross beams, two longitudinal beams, a base, a base plate, an adjustment component, a clamping plate, a clamping block, a wedge block, a reset ring and a reset mechanism, wherein the two cross beams are spaced apart between the two longitudinal beams, the base is arranged between the two cross beams in a direction perpendicular to the ground, the base plate is rotatably arranged at the center position of the side wall of the base, the adjustment component is respectively mounted on the base and the base plate, the middle position of the clamping plate is rotatably arranged on the base plate, the clamping block is arranged at one end of the side wall of the clamping plate, the wedge block is arranged at the other end of the side wall of the clamping plate, the reset ring is arranged at the end of the side wall of the clamping plate, and the reset ring and the clamping block are respectively located on both sides of the clamping plate, and the reset mechanism is arranged in the inner cavity of one of the longitudinal beams, and the reset mechanism corresponds to the position of the clamping plate, so as to solve the problem that traditional retreat preventing devices require a lot of manpower and time to operate, which not only increases labor costs but also delays project progress.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering construction, in particular to a large-section rectangular jacking pipe anti-retraction device. Background Art

[0002] Pipe jacking is a common and critical operation in underground engineering construction, especially in the laying of urban tunnels, drainage pipes, and other large underground pipelines. Pipe jacking involves using a pipe jacking machine to gradually advance the pipe to the desired location underground. During this process, the pipe jacking machine must overcome the resistance of geological factors such as soil and rock to maintain stable advancement. However, as the pipe jacking machine advances, the existing pipe section may retreat with each advance. Especially after the pipe jacking machine stops advancing, the pipe jacking machine may retreat or deflect due to external forces (such as soil compaction, groundwater changes, and soil deformation). In severe cases, this may even affect subsequent construction and the safety of the pipeline. Traditional pipe jacking stop devices are usually manually operated using mechanical means or hydraulic systems. After the pipe jacking machine is advanced, the stop device is manually adjusted or locked to prevent the pipe jacking machine from retreating during construction breaks or due to soil changes. Although this traditional method can effectively prevent pipe jacking from retreating, it often requires a lot of manpower and time in actual construction, not only increasing labor costs but also delaying project progress. Summary of the Invention

[0003] The object of the present invention is to provide a large-section rectangular jacking pipe preventing device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a large-section rectangular jacking pipe retaining device, comprising:

[0005] Two cross beams and two longitudinal beams, wherein the two cross beams are spaced apart between the two longitudinal beams.

[0006] A base is arranged between the two beams in a direction perpendicular to the ground;

[0007] a base plate, rotatably disposed at the center of the side wall of the base;

[0008] an adjusting assembly, mounted on the base and the substrate respectively;

[0009] A card plate, the middle position of which is rotatably disposed on the base plate;

[0010] A card block is provided at one end of the side wall of the card plate;

[0011] A wedge block is provided at the other end of the side wall of the card plate, and the wedge block and the card block are located on the same side;

[0012] A reset ring is provided at the end of the card plate on the side with the card block, and the reset ring and the card block are respectively located on both sides of the card plate;

[0013] A reset mechanism, the reset mechanism being arranged in an inner cavity of one of the longitudinal beams, and the reset mechanism corresponding to the position of the clamping plate;

[0014] The reset mechanism comprises:

[0015] An insertion rod is inserted into one of the longitudinal beams and is capable of sliding along its own extension direction, with both ends of the insertion rod extending out of the side walls of the longitudinal beam respectively;

[0016] Two racks are mirror-imaged on the top and bottom surfaces of the insertion rod, and the extension direction of the two racks is consistent with the extension direction of the insertion rod;

[0017] Two fixing plates are arranged in the inner cavity of the longitudinal beam, and the two fixing plates are mirror-imaged and distributed on the upper and lower sides of the insertion rod;

[0018] A first shaft is rotatably mounted on the two fixing plates along the extending direction of the longitudinal beam;

[0019] Two first gears are respectively disposed on the first shaft, and the two first gears are respectively engaged with the two racks;

[0020] a shift rod, disposed on the first shaft;

[0021] The extension rod is detachably mounted on the end of the shift rod away from the first shaft rod.

[0022] Preferably, guide rails are respectively provided at the top and bottom ends of the base.

[0023] Preferably, the clamping plate is a two-section structure, and the two sections of the clamping plate are connected by a spring.

[0024] Preferably, the end surface of the insertion rod pointing towards the base has a wedge-shaped structure.

[0025] Preferably, the side wall of the clamping plate away from the base is located in the same vertical plane as the outer wall of the longitudinal beam.

[0026] Preferably, a through groove is provided on the outer wall corresponding to the longitudinal beam and the shift rod. When the extension rod rotates to the maximum limit along with the shift rod in the direction close to the base, the end of the extension rod away from the first shaft rod is in the inner cavity of the longitudinal beam. When the shift rod rotates to the maximum limit in the direction away from the base, the end of the shift rod away from the first shaft rod is in the inner cavity of the longitudinal beam.

[0027] Preferably, the adjustment component includes:

[0028] Positioning plates are provided on both sides of the base, with slide grooves formed on the positioning plates. The slide grooves are distributed along the rotation axis of the substrate, and a plurality of slots are formed on the inner wall of the slide groove along a circular array;

[0029] a fixing rod, one end of which is disposed on the base plate and the other end of which is located in the slide groove;

[0030] The fixing block is slidably arranged on the fixing rod, and the fixing block matches the card slot.

[0031] Preferably, the length of the fixing rod is greater than the thickness of the positioning plate.

[0032] The present invention proposes a large-section rectangular jacking pipe stop device, which has the following beneficial effects: the present invention changes the position of the clamping block by rotating the clamping plate, thereby achieving effective fixation and release of the jacking pipe end; when the jacking pipe needs to be fixed, the clamping block can closely contact and stabilize the jacking pipe end, thereby ensuring the stability and safety of the jacking pipe; during the jacking pipe advancement process, the position of the clamping block can be changed by utilizing the reset mechanism, so that it is away from the already fixed jacking pipe end; through this mechanism, the movement of the clamping block does not require manual operation; the reset mechanism enables the clamping block to automatically release the fixed jacking pipe end as the clamping plate rotates, providing sufficient space and stability for subsequent jacking pipe advancement; all adjustments in this process can be completed without external intervention, thereby reducing dependence on manual operation and improving construction efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 Schematic diagram of the crossbeam and longitudinal beam of the present invention;

[0035] Figure 3 This is a schematic diagram of the adjustment component of the present invention;

[0036] Figure 4 It is a schematic diagram of the dynamic device of the present invention;

[0037] Figure 5 Schematic diagram of the reset mechanism of the present invention;

[0038] Figure 6 Schematic diagram of the connection components of the present invention.

[0039] In the figure: 1. crossbeam, 2. longitudinal beam, 3. base, 4. base plate, 5. adjustment assembly, 51. positioning plate, 52. slide groove, 53. card slot, 54. fixing rod, 55. fixing block, 6. card plate, 7. card block, 8. wedge block, 9. reset ring, 10. reset mechanism, 101. insertion rod, 102. rack, 103. fixing plate, 104. first shaft rod, 105. first gear, 106. shift rod, 107. extension rod, 11. dynamic device, 111. driving plate, 112. housing, 113. upper cover, 114. bolt, 115. second shaft rod, 116. second gear, 117. cam, 118. push block, 12. connecting assembly, 121. connecting rod, 122. first connecting belt, 123. second connecting belt, 13. spring, 14. bottom plate, 15. guide rail. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] See also Figure 1-6 The present invention provides a technical solution for a large-section rectangular jacking pipe anti-retraction device. Its detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process. The specific work is as follows.

[0042] A large-section rectangular jacking pipe stopping device comprises: a crossbeam 1, a longitudinal beam 2, a base 3, a base plate 4, an adjustment component 5, a clamping plate 6, a clamping block 7, a wedge block 8, a reset ring 9 and a reset mechanism 10.

[0043] The two cross beams 1 are spaced apart between the two longitudinal beams 2. The two cross beams 1 are made of 20a I-steel, which has high strength and durability and can effectively withstand the huge load generated by the jacking pipe. The cross-sectional shape of the I-steel gives the cross beam good bending resistance and load-bearing capacity, and is suitable for use as a structure to support lateral loads. The cross beam 1 and the longitudinal beam 2 form an open-shaped bracket, and the back and both sides of the bracket are provided with 45° inclined I-steel for support. The inclined I-steel support structure can effectively enhance the bracket's ability to resist lateral forces and prevent the structure from tilting or becoming unstable. By setting the I-steel at a 45° angle, the best mechanical effect can be achieved, the rigidity and stability of the bracket can be increased, and the support can be avoided. In order to prevent the bracket from tilting or deforming due to uneven ground or other external factors, the two longitudinal beams 2 are made of 300×200 rectangular steel tubes. The cross-sectional design of the rectangular steel tubes enables it to provide higher stability and anti-deformation ability. At the same time, the cavity inside the rectangular steel tubes can reduce weight and increase the integrity of the structure. The rectangular steel tubes have strong strength and rigidity and can effectively support and share the longitudinal force. The base 3 is arranged between the two cross beams 1 in a direction perpendicular to the ground, and the base plate 4 is rotatably arranged at the center of the side wall of the base 3. In order to meet most construction requirements, the rotation angle of the base plate 4 is within ±30°. At the same time, the connection position of the base plate 4 and the base 3 is made of high-light wear-resistant material to ensure good mechanical properties. , such as high-strength steel, alloy materials, etc., the adjusting components 5 are respectively installed on the base 3 and the base plate 4, and the adjusting components 5 are used to fix the relative positions of the base plate 4 and the base 3. The middle position of the clamping plate 6 is rotatably set on the base plate 4. The rotation axis of the clamping plate 6 is along the radial direction of the base plate 4, and when no external force is applied, the clamping plate 6 and the base plate 4 remain parallel. The clamping block 7 is set at one end of the side wall of the clamping plate 6, and the clamping block 7 contacts the end of the jacking pipe to achieve a fixing effect on the jacking pipe. The material of the clamping plate 6 is usually selected from high-strength alloy to ensure wear resistance and stability in long-term use. The wedge block 8 is set at the other end of the side wall of the clamping plate 6, and the jacking pipe moves from one end of the clamping plate 6 where the clamping block 7 is installed to one end of the clamping plate 6 where the wedge block 8 is installed. When the jacking pipe contacts the wedge block 8, one end of the card plate 6 on which the wedge block 8 is mounted will move toward the base 3, and at the same time, one end of the card plate 6 on which the wedge block 8 is mounted will bend. The reset ring 9 is provided at the end of the side wall of the card plate 6, and the reset ring 9 and the block 7 are respectively located on both sides of the card plate 6. The reset mechanism 10 will cooperate with the reset ring 9 to gradually restore one end of the card plate 6 on which the block 7 is mounted to be parallel to the base plate 4. The reset mechanism 10 is provided in the inner cavity of one of the longitudinal beams 2, and the reset mechanism 10 corresponds to the position of the card plate 6. Through the movement of the jacking pipe and the reset mechanism 10, one end of the card plate 6 on which the block 7 is mounted will gradually restore to a position parallel to the base plate 4, thereby making the block 7 away from the end of the jacking pipe, which is convenient for the installation of the next jacking pipe.

[0044] The reset mechanism 10 includes an inserting rod 101 , a rack 102 , two fixing plates 103 , a first shaft 104 , two first gears 105 , a shifting rod 106 and an extension rod 107 .

[0045] The insertion rod 101 is inserted into one of the longitudinal beams 2 and can slide along its own extension direction. The two ends of the insertion rod 101 extend out of the side walls of the longitudinal beam 2 respectively, and at the same time provide sufficient contact area outside the side walls of the longitudinal beam 2 to ensure the stable operation of the insertion rod 101. The two racks 102 are mirror-imaged on the top and bottom surfaces of the insertion rod 101 to ensure uniform force distribution and improve transmission accuracy. The extension direction of the two racks 102 is consistent with the extension direction of the insertion rod 101. Two fixing plates 103 are set in the inner cavity of the longitudinal beam 2, and the two fixing plates 103 are mirror-imaged on the upper and lower sides of the insertion rod 101 to support and fix the other parts of the reset mechanism 10. Components, ensure the stability and accuracy of the insertion rod 101 and rack 102 system, the fixed plates 103 are mirror-imaged on the upper and lower sides of the insertion rod 101, the first shaft 104 is rotatably arranged on the two fixed plates 103 along the extension direction of the longitudinal beam 2, and the first shaft 104 and the fixed plate 103 include but are not limited to components such as coil springs installed, which are not shown in the figure, and the two first gears 105 are respectively arranged on the first shaft 104, and the two first gears 105 are respectively engaged with the two racks 102, the shift rod 106 is arranged on the first shaft 104, and the extension rod 107 is detachably installed on the end of the shift rod 106 away from the first shaft 104.

[0046] In this embodiment, at least one reset mechanism 10 is provided, and the number of reset mechanisms 10 can be increased according to actual needs, and multiple reset mechanisms 10 are distributed on the longitudinal beam 2 in a circular array to cope with the use of the clamping plate 6 within the range of ±30°.

[0047] The top and bottom ends of the base 3 are respectively provided with guide rails 15, which include but are not limited to heavy-duty linear guide rails 15 and have a limiting function, so that the base 3 can move within a predetermined range while ensuring that it can bear a large load.

[0048] The card plate 6 is a two-section structure, and the two sections of the card plate 6 are connected by a spring 13, so that one end of the card plate 6 on which the wedge block 8 is installed can still approach the base 3 when the other end of the card plate 6 moves to the maximum limit. At the same time, the elastic force generated by the spring 13 makes the card block 7 on the card plate 6 more firmly fixed on the end face of the top pipe.

[0049] The end face of the insertion rod 101 pointing towards the base 3 is a wedge-shaped structure. The wedge-shaped structure is adopted to achieve more precise positioning during the resetting process. When the reset ring 9 is clamped on the end of the top pipe by the clamping block 7, the end of the clamping plate 6 on which the reset ring 9 is installed is bent away from the base 3. The wedge-shaped structure enables the end of the insertion rod 101 to be accurately inserted into the reset ring 9, and at the same time, as the insertion depth of the insertion rod 101 increases, the end of the clamping plate 6 on which the reset ring 9 is installed is gradually reset.

[0050] The side wall of the clamping plate 6 away from the base 3 is located in the same vertical plane as the outer wall of the longitudinal beam 2, so as to avoid the jacking pipe from contacting the end of the clamping plate 6 during the advancement of the jacking block, thereby hindering the advancement of the jacking pipe and even causing damage to the device.

[0051] A through slot is provided on the outer wall corresponding to the longitudinal beam 2 and the lever 106. The size of the through slot limits the rotation angle of the lever 106. When the extension rod 107 rotates with the lever 106 toward the base 3 to the maximum limit, the end of the extension rod 107 away from the first shaft 104 is in the inner cavity of the longitudinal beam 2. The extension rod 107 is driven by the advancing jacking pipe. When the jacking pipe drives the extension rod 107 to rotate toward the base 3 to the maximum limit, the jacking pipe continues to advance, and the extension rod 107 will be in the inner cavity of the longitudinal beam 2. After completing the driving of the insertion rod 101 At the same time, the extension rod 107 is prevented from hindering the advancement of the jacking pipe. When the lever 106 is rotated to the maximum limit in the direction away from the base 3, the end of the lever 106 away from the first shaft 104 is in the inner cavity of the longitudinal beam 2. When the number of reset mechanisms 10 is greater than one, only one reset mechanism 10 works at a time. The extension rod 107 on the unworked reset mechanism 10 is removed. At this time, under the action of the coil spring, the lever 106 will be in the inner cavity of the longitudinal beam 2, avoiding the unworked reset mechanism 10 from affecting the overall operation of the device.

[0052] The adjustment assembly 5 includes a positioning plate 51 , a fixing rod 54 and a fixing block 55 .

[0053] The positioning plates 51 are arranged on both sides of the base 3, and a slide groove 52 is provided on the positioning plate 51 along the rotation axis direction of the substrate 4. A number of card slots 53 are provided on the inner wall of the slide groove 52 along a ring array, and the slide groove 52 has an annular structure; one end of the fixing rod 54 is provided on the substrate 4, and the other end of the fixing rod 54 is located in the slide groove 52; the fixing rod 54 is provided along the rotation axis direction of the substrate 4, and the cooperation between the fixing rod 54 and the slide groove 52 limits the rotation of the substrate 4 within the range of ±30°; the fixing block 55 is slidably provided on the fixing rod 54, and the fixing block 55 matches the card slot 53. By sliding the fixing block 55 into the card slot 53, the relative position of the substrate 4 and the positioning plate 51 can be fixed.

[0054] The length of the fixing rod 54 is greater than the thickness of the positioning plate 51, so that the fixing block 55 has two positions when sliding along the fixing rod 54. The first position is that the fixing block 55 is in the slot 53, and the second position is that the fixing block 55 is out of the slot 53. The fixing block 55 can be out of the slot 53 and can also slide into the slot 53.

[0055] A bottom plate 14 is provided between the bottom ends of the two longitudinal beams 2, and a fixing hole is opened on the bottom plate 14. A dynamic device 11 is installed on the bottom plate 14 to connect the device and the ground. At the same time, according to the thrust generated by the jacking pipe, the fixing effect between the anti-retraction device and the ground is dynamically adjusted. A connecting component 12 is installed in the longitudinal beam 2 where the reset mechanism 10 is not installed. The connecting component 12 connects the base 3 and the dynamic device 11, thereby realizing movement adjustment through the base 3.

[0056] The dynamic device 11 includes a driving plate 111 , a housing 112 , an upper cover 113 , a bolt 114 , a second shaft 115 , a second gear 116 , a cam 117 and a push block 118 .

[0057] The driving plate 111 is slidably arranged on the bottom plate 14, and the driving plate 111 slides along the extension direction of the bottom plate 14. A mounting groove is provided in the middle of the top surface of the driving plate 111. Tooth grooves are provided on the top surface of the driving plate 111 and on both sides of the mounting groove. The tooth grooves are distributed along the extension direction of the driving plate 111. The shell 112 is installed on the top surface of the bottom plate 14, and the shell 112 is in the mounting groove. The top and bottom ends of the shell 112 are open structures. The upper cover 113 is installed on the top of the shell 112. The upper cover 113 and The housing 112 needs to withstand vertical forces. The housing 112 and the upper cover 113 are made of high-strength and high-rigidity materials with high compressive strength, such as alloy steel. The top of the bolt 114 is installed on the upper cover 113, and the bottom of the bolt 114 passes through the mounting slot and is fixed to the ground. The initial fixing effect of the device is achieved by the bolt 114, the upper cover 113 and the housing 112. The second shaft 115 is rotatably set in the housing 112, and the two ends of the second shaft 115 extend out of the side walls of the housing 112 respectively. The two second gears 116 are respectively provided at both ends of the second shaft 115, and the two second gears 116 are respectively engaged with the tooth grooves on the driving plate 111, and the cam 117 is provided on the second shaft 115, and the cam 117 is located in the housing 112, and the outer wall of the cam 117 is a gradually open structure. When the cam 117 rotates, the shape of its outer wall will push the two push blocks 118 engaged with it. The two push blocks 118 are mirror-imaged on the upper and lower sides of the cam 117, and one push block 118 is provided on the bottom surface of the upper cover 113, and the other push block 118 is provided on the bottom surface of the upper cover 113. A push block 118 is provided on the top surface of the base plate 14, and the push block 118 is engaged with the outer wall of the cam 117. The two push blocks 118 can move in the vertical direction when the cam 117 rotates. As the cam 117 rotates, the distance between the two push blocks 118 gradually increases, thereby forming a greater fixing force. The contact area between the cam 117 and the push block 118 is designed with a lubricating oil groove or lubricating hole, not shown in the figure, to ensure that the lubricating oil can be evenly distributed between the contact surfaces to form an oil film, reduce direct metal contact, and reduce the friction coefficient.

[0058] In this embodiment, the number of dynamic devices 11 can be adjusted according to demand to provide a fixing force that meets the demand. When the number of dynamic devices 11 is greater than one, adjacent driving plates 111 are connected by hard connection.

[0059] The connecting assembly 12 includes a connecting rod 121 , a first connecting belt 122 and a second connecting belt 123 .

[0060] The connecting rod 121 is rotatably set in the corresponding longitudinal beam 2; one end of the first connecting belt 122 is connected to the top of the connecting rod 121, and the other end of the first connecting belt 122 is connected to the base 3; one end of the second connecting belt 123 is connected to the driving plate 111, and the other end of the second connecting belt 123 is connected to the bottom end of the connecting rod 121; the distance between the top end of the connecting rod 121 and the rotation point of the connecting rod 121 is greater than the distance between the bottom end of the connecting rod 121 and the rotation point of the connecting rod 121, so as to form a longer force arm, thereby generating a greater driving force to pull the displacement of the driving plate 111.

[0061] Working principle:

[0062] The two sets of anti-retraction devices are distributed in a mirror image on both sides of the jacking pipe, and the bracket composed of the crossbeam 1 and the longitudinal beam 2 is fixed to the ground through the dynamic device 11. According to the angle of advancement of the jacking pipe, the inclination angle of the clamping plate 6 is adjusted, and the fixing block 55 is slid into the corresponding clamping groove 53 to fix the position of the base plate 4, ensuring that the extension direction of the base plate 4 is consistent with the advancement direction of the jacking pipe. At the same time, the extension rods 107 in the reset mechanism 10 that does not correspond to the base plate 4 are all removed, ensuring that the lever 106 in the reset mechanism 10 corresponding to the base plate 4 is installed with the extension rod 107. When the jacking pipe is advanced, the head end of the jacking pipe first contacts the extension rod 107, and then the jacking pipe is pushed forward. The extension rod 107 moves from away from the base 3 to the direction close to the base 3 until it is completely moved to the inner cavity of the corresponding longitudinal beam 2, and the insertion rod 101 moves toward the base 3. As the jacking pipe continues to move, the head end of the jacking pipe contacts the wedge block 8, causing a backlog on the wedge block 8, and the wedge block 8 moves toward the direction close to the base 3. At the same time, the block 7 moves away from the base 3 and abuts against the outer wall of the jacking pipe. Relative sliding occurs between the block 7 and the jacking pipe, and the spring 13 bends. When the tail end of the jacking pipe passes through the coverage range of the extension rod 107, the extension rod 107 and the insertion rod 101 are reset under the action of the coil spring. When the tail end of the jacking pipe passes through the block 7, the spring Under the action of the plate 13, the block 7 will abut against the tail end of the top pipe. At the same time, since the wedge block 8 is still squeezed by the outer wall of the top pipe, the elastic force generated by the spring 13 ensures the fixing effect of the block 7 and the tail end of the top pipe. When the top pipe is reversed due to the action of external force, the top pipe will exert a force on the block 7 and transmit it to the base 3. Under the action of the guide rail 15, the base 3 will move in the opposite direction of the forward direction of the top pipe. The base 3 pulls the connecting rod 121 to deflect through the first connecting belt 122, and pulls the driving plate 111 to move through the second connecting belt 123, driving the second gear 116 to drive the cam 117 to rotate. Under the action of 17 and the two pushing blocks 118, the distance between the two pushing blocks 118 increases, thereby increasing the fixing force between the bracket and the ground. When the next jacking pipe is pushed forward, the head end of the jacking pipe will contact the extension rod 107 and drive the extension rod 107 to deflect. Repeat the above steps, the insertion rod 101 will move toward the base 3, and the insertion rod 101 will be inserted into the reset ring 9. When the insertion rod 101 moves to the maximum limit, the end of the card plate 6 equipped with the card block 7 will return to a state parallel to the base plate 4, and the card block 7 will separate from the tail end of the previous jacking pipe. After the head end of the next jacking pipe contacts the tail end of the previous jacking pipe, the jacking pipe can continue to be pushed forward.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A large-section rectangular jacking pipe retaining device, comprising: Two cross beams (1) and two longitudinal beams (2), wherein the two cross beams (1) are spaced apart and arranged between the two longitudinal beams (2), and the invention is characterized by comprising: A base (3) is arranged between the two beams (1) in a direction perpendicular to the ground; A base plate (4) is rotatably arranged at the center of the side wall of the base (3); An adjustment component (5) is mounted on the base (3) and the substrate (4) respectively; A card plate (6), wherein the middle position of the card plate (6) is rotatably arranged on the base plate (4); A card block (7) is provided at one end of the side wall of the card plate (6); A wedge block (8) is provided at the other end of the side wall of the clamping plate (6), and the wedge block (8) and the clamping block (7) are located on the same side; A reset ring (9) is arranged at the end of the card plate (6) on one side of the card block (7), and the reset ring (9) and the card block (7) are respectively located on both sides of the card plate (6); A reset mechanism (10), the reset mechanism (10) being arranged in the inner cavity of one of the longitudinal beams (2), and the reset mechanism (10) corresponding to the position of the clamping plate (6); The reset mechanism (10) comprises: An insertion rod (101) is inserted into the longitudinal beam (2) and is capable of sliding along its own extension direction, with both ends of the insertion rod (101) extending out of the side walls of the longitudinal beam (2); Two racks (102) are mirror-imaged on the top and bottom surfaces of the insertion rod (101), and the extension direction of the two racks (102) is consistent with the extension direction of the insertion rod (101); Two fixing plates (103) are arranged in the inner cavity of the longitudinal beam (2), and the two fixing plates (103) are mirror-imaged and distributed on the upper and lower sides of the insertion rod (101); A first shaft (104) is rotatably arranged on the two fixing plates (103) along the extending direction of the longitudinal beam (2); Two first gears (105) are respectively arranged on the first shaft (104), and the two first gears (105) are respectively engaged with the two racks (102); A shift rod (106) is disposed on the first shaft (104); an extension rod (107) detachably mounted on the end of the shift rod (106) away from the first shaft (104); A bottom plate (14) is provided between the bottom ends of the two longitudinal beams (2), a fixing hole is provided on the bottom plate (14), and a dynamic device (11) is installed on the bottom plate (14) to connect the device to the ground; A connecting assembly (12) is installed in the longitudinal beam (2) on which the reset mechanism (10) is not installed, and the connecting assembly (12) connects the base (3) and the dynamic device (11); The dynamic device (11) comprises: a driving plate (111), a housing (112), an upper cover (113), a bolt (114), a second shaft (115), a second gear (116), a cam (117) and a push block (118); The driving plate (111) is slidably arranged on the bottom plate (14), and the driving plate (111) slides along the extension direction of the bottom plate (14). A mounting groove is provided at the middle position of the top surface of the driving plate (111). Tooth grooves are provided on the top surface of the driving plate (111) and on both sides of the mounting groove. The tooth grooves are distributed along the extension direction of the driving plate (111). The shell (112) is installed on the top surface of the bottom plate (14), and the shell (112) is in the mounting groove. The top and bottom ends of the shell (112) are open structures. The upper cover (113) is installed on the top of the shell (112). The top end of the bolt (114) is installed on the upper cover (113). The bottom end of the bolt (114) passes through the mounting groove and is fixed to the ground. The second shaft (115) is rotatably arranged in the shell (112), and the two ends of the second shaft (115) extend out of the shell (112) respectively. The side wall of the second shaft (115), two second gears (116) are respectively arranged at both ends of the second shaft (115), and the two second gears (116) are respectively engaged with the tooth grooves on the driving plate (111). The cam (117) is arranged on the second shaft (115), and the cam (117) is located in the housing (112). The outer wall of the cam (117) is a gradually open structure. When the cam (117) rotates, the shape of its outer wall will push the two push blocks (118) engaged with it. The two push blocks (118) are mirror-imaged on the upper and lower sides of the cam (117), and one push block (118) is arranged on the bottom surface of the upper cover (113), and the other push block (118) is arranged on the top surface of the bottom plate (14). The push block (118) is engaged with the outer wall of the cam (117). The two push blocks (118) can move in the vertical direction when the cam (117) rotates; When the next jacking pipe is pushed forward, the head end of the jacking pipe will contact the extension rod (107) and drive the extension rod (107) to deflect, and the insertion rod (101) will move toward the base (3), and the insertion rod (101) will be inserted into the reset ring (9). When the insertion rod (101) moves to the maximum limit, the end of the clamping plate (6) equipped with the clamping block (7) will return to a state parallel to the base plate (4); The connecting assembly (12) comprises: a connecting rod (121), a first connecting belt (122) and a second connecting belt (123), wherein the connecting rod (121) is rotatably arranged in the corresponding longitudinal beam (2); one end of the first connecting belt (122) is connected to the top end of the connecting rod (121), and the other end of the first connecting belt (122) is connected to the base (3); one end of the second connecting belt (123) is connected to the driving plate (111), and the other end of the second connecting belt (123) is connected to the bottom end of the connecting rod (121); the distance between the top end of the connecting rod (121) and the rotation point of the connecting rod (121) is greater than the distance between the bottom end of the connecting rod (121) and the rotation point of the connecting rod (121), so as to form a longer force arm, thereby generating a greater driving force to pull the displacement of the driving plate (111); The regulating component (5) comprises: Positioning plates (51) are arranged on both sides of the base (3); a slide groove (52) is provided on the positioning plate (51); the slide groove (52) is distributed along the rotation axis of the base plate (4); and a plurality of slots (53) are provided on the inner wall of the slide groove (52) along a circular array; a fixing rod (54), one end of the fixing rod (54) being disposed on the base plate (4), and the other end of the fixing rod (54) being located in the slide groove (52); A fixed block (55) is slidably arranged on the fixed rod (54), and the fixed block (55) matches the clamping slot (53).

2. A large-section rectangular jacking pipe retaining device according to claim 1, characterized in that: The top and bottom ends of the base (3) are respectively provided with guide rails (15).

3. The large-section rectangular jacking pipe retaining device according to claim 1, characterized in that: The clamping plate (6) is a two-section structure, and the two sections of the clamping plate (6) are connected by a spring (13).

4. The large-section rectangular jacking pipe retaining device according to claim 1, characterized in that: The end surface of the insertion rod (101) pointing toward the base (3) is in a wedge-shaped structure.

5. The large-section rectangular jacking pipe retaining device according to claim 1, characterized in that: The side wall of the clamping plate (6) away from the base (3) and the outer wall of the longitudinal beam (2) are located in the same vertical plane.

6. The large-section rectangular jacking pipe retaining device according to claim 1, characterized in that: A through groove is provided on the outer wall corresponding to the longitudinal beam (2) and the shift rod (106); when the extension rod (107) rotates with the shift rod (106) toward the base (3) to the maximum limit, the end of the extension rod (107) away from the first shaft rod (104) is located in the inner cavity of the longitudinal beam (2); when the shift rod (106) rotates toward the base (3) to the maximum limit, the end of the shift rod (106) away from the first shaft rod (104) is located in the inner cavity of the longitudinal beam (2).

7. The large-section rectangular jacking pipe retaining device according to claim 1, characterized in that: The length of the fixing rod (54) is greater than the thickness of the positioning plate (51).

Images