A crawler type steel box girder continuous pushing system and method

Abstract

The present invention proposes a crawler type steel box girder continuous pushing system and method, which belongs to the technical field of bridge construction, including a crawler guide plate, on which a crawler is installed; one side of the crawler guide plate is symmetrically connected to two fixed blocks, two groups of hydraulic rods are oppositely arranged on the two fixed blocks, the hydraulic ends of the hydraulic rods are connected to a clamping assembly, and the clamping assembly is clamped with the crawler through a guide groove on the crawler guide plate; the bottom of the fixed block is connected to a support plate, the bottom of the support plate is connected to a jack, the jack is installed on a base, and receiving columns are connected on both sides of the base. The present invention realizes that when one group of hydraulic rods is pushing, the clamping assembly of the other group of hydraulic rods is separated from the crawler and the hydraulic rods are contracted, and the two groups of hydraulic rods are pushed alternately, so that the steel box girder can be continuously moved, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a crawler type steel box girder continuous jacking system and method. Background Art

[0002] In the process of basic transportation infrastructure construction, bridge construction is one of the key contents and the lifeline of the entire transportation facility. In the construction of roads and bridges, construction in areas such as rivers, railways, and highways is often involved, and these areas often have site restrictions and cannot directly hoist steel box girders. Therefore, the jacking construction process is often used to construct steel box girders. The jacking construction of steel box girders is an important construction form in the field of steel box girder installation, and is particularly suitable for the erection of steel box girder bridges such as multi-span continuous beam bridges and overpass bridges. The widely used jacking construction technologies currently include the ratchet block jacking technology and the walking jacking technology. The existing walking jacking technology needs to wait for the hydraulic cylinder to reset after the hydraulic cylinder pushes once before the next push, and the use efficiency is not high. Summary of the invention

[0003] The present invention aims to solve the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a crawler type steel box girder continuous jacking system and method.

[0004] On the one hand, the technical scheme proposes a crawler-type steel box girder continuous pushing system, including a crawler guide plate, on which a crawler is installed; two fixed blocks are symmetrically connected to one side of the crawler guide plate, and two groups of hydraulic rods are arranged opposite to each other on the two fixed blocks, and the hydraulic ends of the hydraulic rods are connected to the clamping components, and the clamping components are clamped with the crawler through the guide grooves on the crawler guide plate; the bottom of the fixed block is connected to the support plate, and the bottom of the support plate is connected to the jack, and the jack is installed on the base.

[0005] Preferably, the crawler track is composed of a plurality of crawler track units, the crawler track unit includes a crawler body, a first connecting portion is provided at one end of the crawler track body, a second connecting portion is provided at the other end of the crawler track body, and the first connecting portion and the second connecting portion of adjacent crawler track units are connected; extension blocks are respectively connected on both sides of the crawler track unit, and a snap-in groove is opened on the extension block, and the snap-in assembly can be snapped into the snap-in groove.

[0006] Preferably, the clamping assembly comprises a shell, an inner sleeve is slidably connected to the inner wall of the shell, and the shell and the inner sleeve form a telescopic structure; a guide sleeve with a through cavity inside is fixedly connected to the top of the shell, and a connecting rod that can move vertically is slidably connected in the cavity of the guide sleeve, an oblique channel is provided on the connecting rod, and a transverse through hole intersecting the cavity is provided on the guide sleeve; an oblique rod is slidably connected to the oblique channel, and the two ends of the oblique rod respectively pass through the transverse through holes and are connected to the guide oblique block, and the oblique rod and the guide oblique block form a Z-shaped rod; the inner wall of the inner sleeve is connected to a guide oblique plate with an inclined surface adapted to the guide oblique block;

[0007] The top of the connecting rod extends out of the shell and is fixedly connected to the clamping plate, and the top of the clamping plate is fixedly connected to a number of clamping blocks that match the clamping groove; the bottom of the connecting rod is fixedly connected to the limit plate, and the limit plate is connected to the reset spring, and the bottom of the reset spring is connected to the bottom of the inner sleeve; the outer wall of the inner sleeve is connected to a guide rod, and the guide rod can slide in the guide groove; when the inner sleeve moves downward, the clamping block can be linked to move upward in the opposite direction.

[0008] Preferably, three groups of clamping blocks are provided, which are respectively clamped to the clamping grooves of three adjacent groups of crawler units.

[0009] Preferably, the guide groove includes an EA segment groove and a BC segment groove which are arranged in parallel laterally, one end of the EA segment groove and the BC segment groove are connected to the vertically arranged AB segment groove, and the other end is connected to the CE segment groove, the CE segment groove includes a CD segment groove and a DE segment groove, the outer side walls of the CD segment groove and the DE segment groove together form a semicircle, the inner walls of the CD segment groove and the DE segment groove are both straight lines, the angle between the two straight lines is an acute angle, the inflection point of the two straight lines is point D, and point D is lower than the midpoint of the semicircle of the outer side wall of the CE segment groove.

[0010] Preferably, the shortest distance between the inflection point D and the outer wall is the same as the diameter of the guide rod.

[0011] Preferably, two fixed blocks are also symmetrically connected on the other side of the track guide plate, and two sets of hydraulic rods are arranged opposite to each other on the two fixed blocks. The hydraulic ends of the hydraulic rods are connected to the clamping components, and the clamping components are clamped with the track through the guide grooves on the track guide plate; the bottom of the fixed block is connected to the support plate, and the bottom of the support plate is connected to the jack, and the jack is installed on the base.

[0012] Preferably, the inner side wall of the receiving column contacts the fixed block to limit the vertical movement of the fixed block.

[0013] On the other hand, the technical solution also proposes a working method of a crawler type steel box girder continuous jacking system, comprising the following steps:

[0014] S1. Lower the jack so that the top of the crawler track is lower than the top of the receiving column, and place the steel box girder on the receiving column at the starting end;

[0015] S2. Start the jack to lift the steel box girder upwards so that the bottom of the steel box girder leaves the receiving column;

[0016] S3. Start a set of hydraulic rods, the hydraulic rods extend, so that the guide rod slides along the outer wall of the BC section, the clamping assembly is in an extended state, the clamping block cooperates with the clamping groove, and drives the crawler to move forward;

[0017] S4. The hydraulic rod continues to extend, so that the guide rod reaches the farthest end along the outer wall of the CD segment groove and the DE segment groove, at which time the hydraulic rod reaches the maximum extension;

[0018] S5. The hydraulic rod begins to retract, and the guide rod slides against the inner wall of the DE segment groove, compressing the inner sleeve of the clamping assembly, driving the clamping block to move upward and separate from the crawler track;

[0019] S6. The hydraulic rod continues to retract, causing the guide rod to slide along the inner wall of the EA segment groove, and the clamping assembly continues to separate from the crawler track;

[0020] S7. After the hydraulic rod retracts to the initial position, the guide rod slides along the AB segment groove under the action of the return spring and reaches the beginning of the BC segment groove, and the hydraulic rod repeats the next movement;

[0021] S8. When the hydraulic rod is extended to the maximum extension for the first time, the hydraulic rod on the opposite side is started, and the hydraulic rod on the opposite side starts to operate from the maximum extension, so that the two hydraulic rods operate alternately;

[0022] S9. When the steel box girder is transported to the upper part of the receiving column at the terminal, close the hydraulic rod and start the jack to descend so that the steel box girder falls onto the receiving column.

[0023] Compared with the prior art, the above solution has the following advantages or beneficial effects:

[0024] 1. The present invention realizes that the clamping assembly of one group of hydraulic rods is separated from the crawler and the hydraulic rods are retracted by two groups of clamping assemblies and hydraulic rods arranged opposite to each other when one group of hydraulic rods is pushing. The two groups of hydraulic rods push alternately, so that the steel box girder can move continuously, thereby improving work efficiency.

[0025] 2. The present invention arranges extension blocks on both sides of the crawler unit, and provides clamping grooves on the extension blocks to increase the contact area between the clamping blocks and both sides of the crawler unit, making the clamping more firm and the pushing more stable.

[0026] 3. The present invention provides a guide groove so that the clamping assembly is clamped with the crawler track when the hydraulic rod reaches the maximum stroke and is separated from the crawler track when the stroke is the minimum, thereby realizing automatic connection and separation and facilitating continuous pushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 It is a schematic diagram of the structure of the present invention.

[0029] Figure 2 It is the front view of the present invention.

[0030] Figure 3 It is a schematic diagram of the structure of the crawler unit of the present invention.

[0031] Figure 4 for Figure 1Enlarged view of point A in the middle.

[0032] Figure 5 It is a schematic diagram of the extended state of the clamping assembly of the present invention.

[0033] Figure 6 It is a schematic diagram of the recovery state of the clamping assembly of the present invention.

[0034] Figure 7 It is a schematic diagram of the guide groove of the present invention.

[0035] Description of reference numerals:

[0036] 1. Base; 2. Supporting column; 3. Track unit; 31. Track body; 32. First connecting part; 33. Second connecting part; 34. Extension block; 35. Snap-in groove; 4. Fixed block; 5. Hydraulic rod; 6. Snap-in assembly; 61. Inner sleeve; 62. Shell; 63. Guide rod; 64. Guide inclined plate; 65. Guide inclined block; 66. Guide sleeve; 67. Connecting rod; 68. Inclined rod; 69. Limiting plate; 610. Return spring; 611. Snap-in plate; 612. Snap-in block; 613. Horizontal through hole; 614. Oblique channel; 7. Guide groove; 71. AB segment groove; 72. BC segment groove; 73. CD segment groove; 74. DE segment groove; 75. EA segment groove; 8. Jack; 9. Support plate; 10. Track guide plate. DETAILED DESCRIPTION

[0037] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention. The orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiment 1:

[0039] refer to Figure 1-Figure 7 The present embodiment proposes a crawler steel box girder continuous pushing system, including a crawler guide plate 10, on which a crawler is installed; one side of the crawler guide plate 10 is symmetrically connected to two fixed blocks 4, on which two sets of hydraulic rods 5 are arranged opposite to each other, and the two sets of hydraulic rods 5 are respectively arranged on the inner sides of the two fixed blocks 4, and the hydraulic ends of the hydraulic rods 5 are connected to the clamping assembly 6, which is clamped with the crawler through the guide groove 7 on the crawler guide plate 10; the bottom of the fixed block 4 is connected to the support plate 9, and the bottom of the support plate 9 is connected to the jack 8, which is installed on the base 1, and the two sides of the base 1 are connected to the receiving column 2, and the inner wall of the receiving column 2 is in contact with the fixed block 4, so as to limit the vertical movement of the fixed block 4.

[0040] The crawler track in this embodiment is composed of a plurality of crawler track units 3, and the crawler track unit 3 includes a crawler track body 31, one end of the crawler track body 31 is provided with a first connecting portion 32, and the other end of the crawler track body 31 is provided with a second connecting portion 33, the first connecting portion 32 and the second connecting portion 33 of adjacent crawler track units 3 are hinged, and adjacent crawler track units 3 can rotate; the two sides of the crawler track unit 3 are respectively connected to extension blocks 34, and the extension blocks 34 are provided with clamping grooves 35, and the clamping assembly 6 can be clamped into the clamping grooves 35, so that the hydraulic rod 5 can push the crawler track to move on the crawler guide plate 10.

[0041] The clamping assembly 6 in this embodiment includes a shell 62, and an inner sleeve 61 is slidably connected to the inner wall of the shell 62, and the shell 62 and the inner sleeve 61 form a telescopic structure; the top of the shell 62 is fixedly connected to a guide sleeve 66 with a through cavity inside, and a connecting rod 67 that can move vertically is slidably connected in the cavity of the guide sleeve 66, and an oblique channel 614 is provided on the connecting rod 67, and a transverse through hole 613 intersecting the cavity is provided on the guide sleeve 66; the oblique channel 614 is slidably connected to an oblique rod 68, and the two ends of the oblique rod 68 respectively penetrate the transverse through holes 613 and are connected to the guide oblique block 65, and the oblique rod 68 and the guide oblique block 65 form a Z-shaped rod; the inner wall of the inner sleeve 61 is connected to a guide oblique plate 64 with an inclined surface adapted to the guide oblique block 65;

[0042] The top of the connecting rod 67 extends out of the housing 62 and is fixedly connected to the clamping plate 611. The top of the clamping plate 611 is fixedly connected to a plurality of clamping blocks 612 that match the clamping grooves 35. The clamping blocks 612 are provided in three groups, which are respectively clamped to the clamping grooves 35 of three adjacent groups of crawler units 3. The bottom of the connecting rod 67 is fixedly connected to the limit plate 69. The limit plate 69 is connected to the return spring 610. The bottom of the return spring 610 is connected to the bottom of the inner sleeve 61. The outer wall of the inner sleeve 61 is connected to the guide rod 63, which can slide in the guide groove 7. When the inner sleeve 61 moves downward, the clamping blocks 612 can move upward in the opposite direction in linkage.

[0043] The guide groove 7 includes an EA segment groove 75 and a BC segment groove 72 which are arranged in parallel in the transverse direction. One end of the EA segment groove 75 and the BC segment groove 72 is connected to the vertically arranged AB segment groove 71, and the other end is connected to the CE segment groove. The CE segment groove includes a CD segment groove 73 and a DE segment groove 74. The outer side walls of the CD segment groove 73 and the DE segment groove 74 together form a semicircular arc. The inner walls of the CD segment groove 73 and the DE segment groove 74 are both straight lines. The angle between the two straight lines is an acute angle. The inflection point of the two straight lines is point D. Point D is lower than the midpoint of the semicircle of the outer side wall of the CE segment groove. The closest distance between the inflection point D and the outer wall is the same as the diameter of the guide rod 63. The AB segment groove 71, the BC segment groove 72, the CD segment groove 73, the DE segment groove 74, and the EA segment groove 75 are connected end to end to form a closed groove.

[0044] The working principle of the clamping assembly 6 and the guide groove 7 is as follows: when the guide rod 63 is located in the EA segment groove 75, the return spring 610 is in a compressed state, at which time the connecting rod 67 is retracted, and the clamping block 612 is separated from the clamping groove 35; when the guide rod 63 is located in the AB segment groove 71, it bounces downward under the action of the return spring 610 so that the guide rod 63 bounces to the beginning of the BC segment groove 72; when the guide rod 63 is located in the BC segment groove 72, due to the action of the return spring 610, the guide rod 63 slides against the outer wall of the BC segment groove 72, at which time the clamping block 612 is clamped into the clamping groove 35, and the hydraulic rod 5 drives the crawler to move. movement; when the guide rod 63 is located in the CE section, at this time, before the guide rod 63 reaches the midpoint of the semicircular arc of the outer wall, it slides downward close to the outer arc wall under the action of the hydraulic rod 5, and when reaching the midpoint of the semicircular arc of the outer wall, the hydraulic rod 5 reaches the maximum contraction amount, and the clamping block 612 is separated from the clamping groove 35; thereafter, the hydraulic rod 5 begins to extend, and under the action of the return spring 610, the guide rod 63 slides close to the inner wall of the DE section groove 74, and at the same time, the return spring 610 continues to shrink under the continuous squeezing of the inner wall of the DE section groove 74, and shrinks to the maximum when reaching point E, and the hydraulic rod 5 completes a telescopic stroke.

[0045] Working method:

[0046] S1. Lower the jack 8 so that the top of the crawler is lower than the top of the receiving column 2, and place the steel box girder on the receiving column 2 at the starting end;

[0047] S2. Start the jack 8 to lift the steel box girder upward so that the bottom of the steel box girder leaves the receiving column 2;

[0048] S3. Start a set of hydraulic rods 5, the hydraulic rod 5 is extended, so that the guide rod 63 slides along the outer wall of the BC section, the clamping assembly 6 is in an extended state, the clamping block 612 cooperates with the clamping groove 35, and drives the track to move forward;

[0049] S4. The hydraulic rod 5 continues to extend, so that the guide rod 63 reaches the farthest end along the outer wall of the CD segment groove 73 and the DE segment groove 74, at which time the hydraulic rod 5 reaches the maximum extension;

[0050] S5. The hydraulic rod 5 begins to retract, and the guide rod 63 slides against the inner wall of the DE segment groove 74, compressing the inner sleeve 61 of the clamping assembly 6, driving the clamping block 612 to move upward and separate from the track;

[0051] S6. The hydraulic rod 5 continues to retract, so that the guide rod 63 slides along the inner wall of the EA segment groove 75, and the clamping assembly 6 continues to separate from the track;

[0052] S7. After the hydraulic rod 5 is retracted to the initial position, the guide rod 63 slides along the AB segment groove 71 under the action of the return spring 610 and reaches the beginning of the BC segment groove 72, and the hydraulic rod 5 repeats the next movement;

[0053] S8. When the hydraulic rod 5 is extended to the maximum extension for the first time, the opposite hydraulic rod 5 is started, and the opposite hydraulic rod 5 starts to operate from the maximum extension, so that the two hydraulic rods 5 operate alternately;

[0054] S9. When the steel box girder is transported to the upper part of the receiving column 2 at the terminal, close the hydraulic rod 5 and start the jack 8 to descend, so that the steel box girder falls on the receiving column 2.

[0055] Embodiment 2:

[0056] Continue to refer Figure 1-Figure 7 This embodiment is further elaborated on the basis of the first embodiment. In this embodiment, two fixed blocks 4 are also symmetrically connected to the other side of the crawler guide plate 10. Two sets of hydraulic rods 5 are arranged opposite to each other on the two fixed blocks 4. The hydraulic ends of the hydraulic rods 5 are connected to the clamping assembly 6. The clamping assembly 6 is clamped with the crawler through the guide groove 7 on the crawler guide plate 10. The bottom of the fixed block 4 is connected to the support plate 9. The bottom of the support plate 9 is connected to the jack 8. The jack 8 is installed on the base 1. The fixed blocks 4, hydraulic rods 5 and clamping assembly 6 are arranged on both sides of the crawler guide plate 10, which can ensure stable transportation and avoid construction inconvenience caused by the failure of a single hydraulic rod 5 on one side.

[0057] The working process of this embodiment is similar to that of the first embodiment and will not be described in detail here.

[0058] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A crawler type steel box girder continuous jacking system, characterized in that: The crawler track plate (10) comprises a crawler track plate (10), on which a crawler track is mounted; one side of the crawler track plate (10) is symmetrically connected to two fixing blocks (4), two sets of hydraulic rods (5) are arranged opposite to each other on the two fixing blocks (4), the hydraulic ends of the hydraulic rods (5) are connected to a clamping assembly (6), and the clamping assembly (6) is clamped with the crawler track through a guide groove (7) on the crawler track plate (10); the bottom of the fixing block (4) is connected to a support plate (9), the bottom of the support plate (9) is connected to a jack (8), and the jack (8) is mounted on a base (1), and both sides of the base (1) are connected to receiving columns (2); The crawler track is composed of a plurality of crawler track units (3), wherein the crawler track unit (3) comprises a crawler track body (31), one end of the crawler track body (31) is provided with a first connecting portion (32), the other end of the crawler track body (31) is provided with a second connecting portion (33), and the first connecting portion (32) of adjacent crawler track units (3) is connected to the second connecting portion (33); both sides of the crawler track unit (3) are respectively connected to extension blocks (34), the extension blocks (34) are provided with clamping grooves (35), and the clamping assembly (6) can be clamped to the clamping grooves (35); The clamping assembly (6) comprises a shell (62), the inner wall of which is slidably connected to an inner sleeve (61), the shell (62) and the inner sleeve (61) forming a telescopic structure; the top of the shell (62) is fixedly connected to a guide sleeve (66) having a through cavity inside, the cavity of the guide sleeve (66) is slidably connected to a connecting rod (67) that can move vertically, the connecting rod (67) is provided with an oblique channel (614), the guide sleeve (66) is provided with a transverse through hole (613) intersecting the cavity; the oblique channel (614) is slidably connected to an oblique rod (68), the two ends of the oblique rod (68) respectively penetrate the transverse through holes (613) and are connected to the guide oblique block (65), the oblique rod (68) and the guide oblique block (65) forming a Z-shaped rod; the inner wall of the inner sleeve (61) is connected to a guide oblique plate (64) having an oblique surface that matches the guide oblique block (65); The top of the connecting rod (67) extends out of the housing (62) and is fixedly connected to the clamping plate (611); the top of the clamping plate (611) is fixedly connected to a plurality of clamping blocks (612) that match the clamping grooves (35); the top of the connecting rod (67) is fixedly connected to the limiting plate (69); the limiting plate (69) is connected to a return spring (610); the bottom of the return spring (610) is connected to the bottom of the inner sleeve (61); the outer wall of the inner sleeve (61) is connected to a guide rod (63); the guide rod (63) can slide in the guide groove (7); when the inner sleeve (61) moves downward, the clamping blocks (612) can move upward in the opposite direction in a linked manner; The guide groove (7) comprises an EA segment groove (75) and a BC segment groove (72) which are arranged in parallel in the transverse direction. One end of the EA segment groove (75) and the BC segment groove (72) is connected to the AB segment groove (71) which is arranged in the vertical direction, and the other end is connected to the CE segment groove. The CE segment groove comprises a CD segment groove (73) and a DE segment groove (74). The outer side walls of the CD segment groove (73) and the DE segment groove (74) together form a semicircular arc. The inner walls of the CD segment groove (73) and the DE segment groove (74) are both straight lines. The angle between the two straight lines is an acute angle. The inflection point of the two straight lines is point D. Point D is lower than the midpoint of the semicircle of the outer side wall of the CE segment groove.

2. The crawler type steel box girder continuous jacking system according to claim 1, characterized in that: The clamping blocks (612) are provided in three groups, respectively clamping the clamping grooves (35) of three adjacent groups of crawler units (3).

3. The crawler type steel box girder continuous jacking system according to claim 1 is characterized in that: The shortest distance between the inflection point D and the outer wall is the same as the diameter of the guide rod (63).

4. The crawler type steel box girder continuous jacking system according to claim 1, characterized in that: The other side of the crawler guide plate (10) is also symmetrically connected to two fixed blocks (4), two sets of hydraulic rods (5) are arranged opposite to each other on the two fixed blocks (4), the hydraulic ends of the hydraulic rods (5) are connected to the clamping assembly (6), and the clamping assembly (6) is clamped with the crawler through the guide groove (7) on the crawler guide plate (10); the bottom of the fixed block (4) is connected to the support plate (9), the bottom of the support plate (9) is connected to the jack (8), and the jack (8) is installed on the base (1).

5. The crawler type steel box girder continuous jacking system according to claim 4 is characterized in that: The inner side wall of the receiving column (2) contacts the fixed block (4) to limit the vertical movement of the fixed block (4).

6. A working method using the crawler type steel box girder continuous jacking system according to claim 1, characterized in that The following steps are involved: S1. Lower the jack (8) so that the top of the crawler is lower than the top of the receiving column (2), and place the steel box girder on the receiving column (2) at the starting end; S2. Start the jack (8) to lift the steel box girder upward so that the bottom of the steel box girder leaves the receiving column (2); S3. Start a set of hydraulic rods (5), the hydraulic rods (5) are extended, so that the guide rod (63) slides along the outer wall of the BC section, the clamping assembly (6) is in an extended state, the clamping block (612) cooperates with the clamping groove (35), and drives the crawler to move forward; S4. The hydraulic rod (5) continues to extend, so that the guide rod (63) reaches the farthest end along the outer wall of the CD segment groove (73) and the DE segment groove (74), at which time the hydraulic rod (5) reaches the maximum extension; S5. The hydraulic rod (5) begins to retract, and the guide rod (63) slides against the inner wall of the DE segment groove (74), compressing the inner sleeve (61) of the clamping assembly (6), driving the clamping block (612) to move downward and separate from the crawler track; S6. The hydraulic rod (5) continues to retract, causing the guide rod (63) to slide along the inner wall of the EA segment groove (75), and the clamping assembly (6) continues to be separated from the crawler track; S7. After the hydraulic rod (5) is retracted to the initial position, the guide rod (63) slides along the AB segment groove (71) under the action of the return spring (610) and reaches the beginning of the BC segment groove (72), and the hydraulic rod (5) repeats the next movement; S8. When the hydraulic rod (5) is extended to the maximum extension for the first time, the opposite hydraulic rod (5) is started, and the opposite hydraulic rod (5) starts to operate from the maximum extension, so that the two hydraulic rods (5) operate alternately; S9. When the steel box girder is transported to the upper part of the receiving column (2) at the terminal, the hydraulic rod (5) is closed and the jack (8) is started to descend so that the steel box girder falls onto the receiving column (2).

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