Unilateral bridge erecting machine

Abstract

The utility model discloses a unilateral bridge erecting machine which comprises a main beam composed of a left branch main beam and a right branch main beam which extend front and back, a tail supporting leg is installed at the bottom of the rear end of the main beam, a middle supporting leg device is arranged at the bottom of the middle of the main beam, a front supporting leg device is arranged below the main beam at the front portion of the middle supporting leg device, and a connecting beam is installed at the bottom of the front end of the main beam. Flat steel guide rails extending front and back are fixed on the top surfaces of the two branch main beams; the rear hoisting trolley and the front hoisting trolley are positioned on the two flat steel guide rails; the front hoisting trolley is provided with the connecting beam capable of rotating horizontally, so that a beam plate can be rotated horizontally, the requirements of hoisting transportation and installation are met, and the front hoisting trolley is supported on a bridge through the temporary short supporting legs and is supported on a corresponding extension bearing platform through the temporary long supporting legs; therefore, the requirement of the bridge girder erection machine for moving and bridging on the bridge and the side extension bearing platform is met.

Description

Technical Field

[0001] This utility model relates to the field of bridge processing equipment technology, and more specifically to a single-sided bridge erecting machine. Background Technology

[0002] When existing bridges need to be widened, a pier cap needs to be installed on one side of the bridge, then piers are installed on the pier cap, and finally the top beams are installed to achieve the widening. The bridge erecting machine is positioned on one side of the bridge and on the other side of the pier to move and lay the beams. However, some pier caps have not yet been installed. In this case, the length of the temporary outriggers of the bridge erecting machine is insufficient to press against the top surface of the corresponding pier cap. Therefore, the existing bridge erecting machines cannot meet the laying requirements.

[0003] Meanwhile, existing beams are transported with long horizontal lengths and short front-to-back distances to ensure stability during lifting and movement. Once in position, they need to be rotated to increase the front-to-back distance so that they can be laid onto the cap beams installed on the corresponding piers. However, current lifting equipment does not have a structure that allows for horizontal rotation. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a single-sided bridge erecting machine. Its front lifting trolley has a horizontally rotatable connecting beam, which allows it to rotate the beam horizontally to meet the needs of lifting, transportation and installation. Moreover, it is supported on the bridge by temporary short support legs and supported on the corresponding expansion pier by temporary long support legs, thereby meeting the needs of the bridge erecting machine to move and erect bridges on the bridge and the side expansion pier.

[0005] The solution of this utility model to the aforementioned technical problem is:

[0006] A single-sided bridge erecting machine includes a main beam composed of two sub-main beams extending forward and backward on the left and right. A tail support leg is installed at the bottom of the rear end of the main beam, a middle support leg device is provided at the bottom of the middle part of the main beam, a front support leg device is provided below the main beam at the front part of the middle support leg device, a first connecting beam is installed at the bottom of the front end of the main beam, and flat steel guide rails extending forward and backward are fixed on the top surfaces of the two sub-main beams. The rear lifting trolley and the front lifting trolley are located on the two flat steel guide rails.

[0007] A horizontal fixed plate is fixed to the bottom of the movable pulley seat of the front lifting trolley. A rotary reduction motor is fixed to the left and right sides of the top surface of the horizontal fixed plate. The bottom end of the output shaft of the rotary reduction motor extends out of the horizontal fixed plate and is fixed with a drive gear. A vertical main shaft is movably connected to the middle of the horizontal fixed plate through a bearing. The bottom of the vertical main shaft extends out of the bottom surface of the horizontal fixed plate and is fixed with a transmission gear. Two drive gears mesh with the transmission gear. A connecting lifting device is fixed to the lower part of the vertical main shaft.

[0008] The bottom of the first connecting beam is movably connected to a horizontal rotating connecting seat, and the middle part of the horizontal rotating connecting seat is movably connected to an upper rotating seat through a hinge shaft. The bottom surfaces of the two upper rotating seats are fixed to the same left-right extending support beam.

[0009] Telescopic sleeves are fixed to the left and right sides of the supporting crossbeam. Temporary short support legs are installed in the telescopic sleeve on the left side, and temporary long support legs are installed on the telescopic sleeve on the right side.

[0010] The bottom surfaces of the support beams on both sides of the right telescopic sleeve are equipped with hand-operated hoists. Two connecting blocks are fixed on the outer bottom of the upper sleeve of the temporary long support leg device. The hooks of the hand-operated hoists are hooked onto the corresponding connecting blocks.

[0011] The bottom plate of the first bottom support leg of the temporary short support leg presses against the top surface of the right side of the bridge. An extended pier is fixed on the ground on the right side of the bridge, and the bottom plate of the bottom support leg device presses against the top surface of the extended pier.

[0012] The connecting hanger includes an upper connecting rod, the upper part of which is fixed to the lower part of the upper vertical main shaft. The lower part of the upper connecting rod is movably connected to a connecting beam extending forward and backward via a hinge shaft. The front or rear part of the top surface of the connecting beam is movably connected to an oblique pushing cylinder via a hinge shaft. The end of the push rod of the oblique pushing cylinder is movably connected to a connecting seat fixed on the upper side wall of the upper connecting rod via a hinge shaft.

[0013] The connecting beam is equipped with a movable frame at both the front and rear. The upper transverse beam of the movable frame is located on the top surface of the connecting beam. The left and right vertical beams of the movable frame are located on the left and right sides of the connecting beam. A transverse plate extending to the left and right is fixed between the bottom of the two side vertical beams. The two transverse plates are located below the connecting beam. The middle of the two transverse plates is movably connected to a lifting transverse beam extending to the left and right through a hinge shaft. Lifting connecting seats are fixed on the left and right sides of the bottom surface of the lifting transverse beam.

[0014] The front and rear of the left and right side plates of the connecting beam are each equipped with an adjusting screw that extends forward and backward. The front and rear of the adjusting screw are inserted into the vertical plates of two corresponding adjusting seats fixed on the outer side wall of the connecting beam. The middle part of the adjusting screw is inserted into the corresponding side vertical beam. Multiple adjusting nuts are screwed to the front and rear of the adjusting screw. The inner end face of the adjusting nut at the end presses against the end face of the vertical plate of the corresponding adjusting seat. The side vertical beam is clamped between the two adjusting nuts in the middle.

[0015] The temporary short support leg includes a left connecting sleeve, the upper part of which is inside the left telescopic sleeve, and its outer side wall is fixed to the inner side wall of the left telescopic sleeve. The lower part of the left connecting sleeve extends out of the bottom end of the left telescopic sleeve. A first hydraulic cylinder connecting seat is fixed to the upper part of the left connecting sleeve. A first hydraulic cylinder with an external displacement sensor is located in the left connecting sleeve, and its top is movably connected to the first hydraulic cylinder connecting seat through a hinge shaft. The bottom end of the push rod of the first hydraulic cylinder is movably connected to a connecting seat through a hinge shaft. The bottom surface of the connecting seat is fixed to the top surface of the bottom plate of the first bottom support leg. The first bottom support leg is sleeve-shaped and is inserted into the left connecting sleeve. Its outer side wall is close to and cooperates with the inner side wall of the left connecting sleeve. The first hydraulic cylinder is inserted into the first bottom support leg.

[0016] The cross-sections of the telescopic sleeve, the left connecting sleeve, and the first bottom support leg are all rectangular.

[0017] The first bottom support leg has multiple positioning through holes formed on its front and rear wall panels, which correspond to the connecting through holes formed on the front and rear wall panels of the left connecting sleeve.

[0018] The outstanding effect of this utility model is:

[0019] Compared with existing technologies, its front crane trolley has a horizontally rotating connecting beam, which allows it to rotate the beam horizontally to meet the needs of lifting, transportation and installation. Moreover, it supports the bridge with temporary short support legs and supports the corresponding expansion pier with temporary long support legs, thereby meeting the needs of the bridge erecting machine to move and erect bridges on the bridge and the side expansion pier. Attached Figure Description

[0020] Figure 1 This is a partial structural schematic diagram of the present invention;

[0021] Figure 2 This is a partial sectional view of the tail support leg;

[0022] Figure 3 This is a partial sectional view of the middle outrigger assembly;

[0023] Figure 4 This is a partial sectional view of the front outrigger assembly;

[0024] Figure 5 This is a partial structural diagram of the component below the movable pulley seat of the front crane trolley;

[0025] Figure 6 This is a partial structural diagram of the rotary reduction motor of the front crane trolley;

[0026] Figure 7 This is a partial structural schematic diagram of the component at the connecting beam of this utility model;

[0027] Figure 8 yes Figure 7 A magnified view of a portion of the image;

[0028] Figure 9 yes Figure 7 A magnified view of another part;

[0029] Figure 10 yes Figure 7 There are also some enlarged partial images. Detailed Implementation

[0030] For example, see below. Figures 1 to 10 As shown, a single-sided bridge erecting machine includes a main beam 10 composed of two main beams 11 extending forward and backward. A tail support leg 200 is installed at the bottom of the rear end of the main beam 10 (one tail support leg 200 is installed at the bottom of the rear part of each main beam 11). A middle support leg device 300 is provided at the bottom of the middle part of the main beam 10. A front support leg device 400 is provided below the main beam 10 at the front part of the middle support leg device 300. A first connecting beam 12 is installed at the bottom of the front end of the main beam 10. The top surfaces of the two main beams 11 are fixed with flat steel guide rails 111 extending forward and backward. The rear lifting trolley 500 and the front lifting trolley 600 are located on the two flat steel guide rails 111. The bridge below the middle support leg device 300 and the front support leg device 400 and the top surface of the beam slab laid on its right side are fixed with left and right extending movable flat steel guide rails 1. The bottom movable wheels of the middle support leg device 300 and the front support leg device 400 are placed on the corresponding movable flat steel guide rails 1.

[0031] The tail outrigger 200, middle outrigger device 300, and front outrigger device 400 in this embodiment are basically the same as the existing structures, so they will not be described in detail.

[0032] Both the rear trolley 500 and the front trolley 600 include portal-shaped outriggers on the left and right sides. A forward- and backward extending transverse beam of the traveling mechanism is installed at the bottom of the portal-shaped outriggers. The front and rear parts of the transverse beam are movably connected to wheels via hinge shafts. A geared motor is fixed on the transverse beam, which drives one of the wheels to rotate, thus enabling the rear trolley 500 or the front trolley 600 to move forward and backward. An upper horizontal support frame is fixed to the upper part of the two corresponding portal-shaped outriggers. The front and rear parts of the top surface of the upper horizontal support frame are fixed with left- and right extending upper flat steel guide rails. Wheels are installed at the left and right ends of the support beams at the front and rear of the corresponding trolley frames. A geared motor is fixed on the support beam, which drives the corresponding wheel to rotate, placing it on the corresponding upper flat steel guide rail for left- and right movement. A winch device is installed on the trolley frame. The rear trolley 500 and the front trolley 600 have a structure basically the same as those currently on the market, and will not be described in detail here.

[0033] A horizontal fixed plate 70 is fixed to the bottom of the movable pulley seat of the front lifting trolley 600. A rotary reduction motor 71 is fixed to the left and right parts of the top surface of the horizontal fixed plate 70. The bottom end of the output shaft of the rotary reduction motor 71 extends out of the horizontal fixed plate 70 and is fixed with a drive gear 72. A vertical main shaft 73 is movably connected to the middle of the horizontal fixed plate 70 through a bearing. The bottom of the vertical main shaft 73 extends out of the bottom surface of the horizontal fixed plate 70 and is fixed with a transmission gear 74. The two drive gears 72 mesh with the transmission gear 74. A connecting lifting device 80 is fixed to the lower part of the vertical main shaft 73.

[0034] The bottom of the first connecting beam 12 is movably connected to a horizontal rotating connecting seat 13, and the middle part of the horizontal rotating connecting seat 13 is movably connected to an upper rotating seat 14 through a hinge shaft. The bottom surfaces of the two upper rotating seats 14 are fixed to the same left and right extending support leg beam 20.

[0035] Telescopic sleeves 21 are fixed to the left and right sides of the support leg beam 20. A temporary short support leg 30 is installed in the telescopic sleeve 21 on the left side, and a temporary long support leg 40 is installed on the telescopic sleeve 21 on the right side.

[0036] The bottom surfaces of the support beams 20 on both sides of the telescopic sleeve 21 on the right are equipped with hand-operated hoists 50. The bottom of the temporary long support leg 40 is fixed to the bottom of the bottom support leg device 60. Two connecting blocks 62 are fixed to the bottom outer side of the upper sleeve 61. The hook of the hand-operated hoist 50 is hooked onto the corresponding connecting block 62.

[0037] Furthermore, the bottom plate of the first bottom support leg 35 of the temporary short support leg 30 presses against the top surface of the right side of the bridge, and the extended pier 100 is fixed on the ground at the right side of the bridge, and the bottom plate of the bottom support leg device 60 presses against the top surface of the extended pier 100.

[0038] The connecting hanger 80 includes an upper connecting rod 81. The upper part of the upper connecting rod 81 is fixed to the lower part of the upper vertical main shaft 73. The lower part of the upper connecting rod 81 is movably connected to a connecting beam 82 extending forward and backward via a hinge shaft. The front or rear part of the top surface of the connecting beam 82 is movably connected to an oblique pushing cylinder 83 via a hinge shaft. The end of the push rod of the oblique pushing cylinder 83 is movably connected to a connecting seat fixed on the upper side wall of the upper connecting rod 81 via a hinge shaft.

[0039] The connecting beam 82 is equipped with a movable frame 84 at both the front and rear. The upper transverse beam of the movable frame 84 is located on the top surface of the connecting beam 82. The left and right vertical beams of the movable frame 84 are located on the left and right sides of the connecting beam 82. A transverse plate extending to the left and right is fixed between the bottom of the two side vertical beams. The two transverse plates are located below the connecting beam 82. The middle of the two transverse plates is movably connected to a lifting transverse beam 85 extending to the left and right through a hinge shaft. Lifting connecting seats are fixed on the left and right sides of the bottom surface of the lifting transverse beam 85. The left and right side plates of the connecting beam 82 are each equipped with front and rear extending adjusting screws 86. The front and rear parts of the adjusting screws 86 are inserted into the vertical plates of two corresponding adjusting seats fixed on the outer side wall of the connecting beam 82. The middle part of the adjusting screw 86 is inserted into the corresponding side vertical beam. Multiple adjusting nuts 87 are screwed to the front and rear parts of the adjusting screws 86. The inner end face of the adjusting nut 87 at the end presses against the end face of the vertical plate of the corresponding adjusting seat. The side vertical beam is clamped between the two adjusting nuts 87 in the middle. By loosening and rotating the corresponding adjusting nuts 87, the front and rear positions of the two moving frames 84 can be changed, thereby meeting the needs of lifting beams and plates of different widths or lengths.

[0040] Furthermore, the telescopic sleeve 21 is inserted into the vertical through groove formed in the middle of the left and right sides of the support leg beam 20. Connecting blocks are fixed to the upper and lower parts of the outer side wall of the telescopic sleeve 21, and the connecting blocks are welded and fixed to the support leg beam 20.

[0041] Furthermore, the temporary short support leg 30 includes a left connecting sleeve 32. The upper part of the left connecting sleeve 32 is located in the left telescopic sleeve 21, and its outer side wall is fixed to the inner side wall of the left telescopic sleeve 21. The lower part of the left connecting sleeve 32 extends out of the bottom end of the left telescopic sleeve 21. A first hydraulic cylinder connecting seat 33 is fixed to the upper part of the left connecting sleeve 32. A first hydraulic cylinder 34 with an external displacement sensor is located in the left connecting sleeve 32. Its top is movably connected to the first hydraulic cylinder connecting seat 33 through a hinge shaft. The bottom end of the push rod of the first hydraulic cylinder 34 is movably connected to a connecting seat through a hinge shaft. The bottom surface of the connecting seat is fixed to the top surface of the bottom plate of the first bottom support leg 35. The first bottom support leg 35 is sleeve-shaped and is inserted into the left connecting sleeve 32. Its outer side wall is close to and cooperates with the inner side wall of the left connecting sleeve 32. The first hydraulic cylinder 34 is inserted into the first bottom support leg 35.

[0042] The cross-sections of the telescopic sleeve 21, the left connecting sleeve 32, and the first bottom support leg 35 are all rectangular;

[0043] The first bottom support leg 35 has multiple positioning through holes formed on its front and rear wall panels, which correspond to the connecting through holes formed on the front and rear wall panels of the left connecting sleeve 32.

[0044] The push rod of the first hydraulic cylinder 34 pushes the bottom plate of the first bottom support leg 35 of the temporary short support leg 30 against the top surface of the right side of the bridge. At this time, the displacement sensor senses the distance of the extension of the push rod of the first hydraulic cylinder 34 and sends the signal to the control host (the control host is electrically connected to all electrical components through electrical connection lines to realize control, which is a conventional structure and will not be described in detail here). The control host controls the control valves of the corresponding hydraulic system to operate (this is the existing conventional control method and structure, which will not be described in detail here), so that the push rod of the first hydraulic cylinder 34 stops pushing. At this time, the positioning through hole of the first bottom support leg 35 is aligned with the corresponding connecting through holes formed on the front and rear walls of the left connecting sleeve 32. Then, a pin is inserted for limiting and fixing.

[0045] Furthermore, the bottom surfaces of the support leg beams 20 on both sides of the right telescopic sleeve 21 are movably connected to the hand chain hoist 50 via hinge shafts.

[0046] Furthermore, the temporary long support leg 40 includes a first right vertical sleeve 41 with a rectangular cross-section. The first right vertical sleeve 41 is inserted into the right telescopic sleeve 21. The outer side wall of the first right vertical sleeve 41 is close to the inner side wall of the right telescopic sleeve 21 and cooperates with the right telescopic sleeve 21. A second right vertical sleeve 42 is inserted into the lower part of the first right vertical sleeve 41. The second right vertical sleeve 42 cooperates with the first right vertical sleeve 41. The lower part of the second right vertical sleeve 42 extends out of the bottom end of the first right vertical sleeve 41 and is fixedly connected to the top end of the upper outer sleeve 61 of the bottom support leg device 60 by bolts.

[0047] Furthermore, the front and rear walls of the second right vertical sleeve 42 are formed with a plurality of corresponding connecting through holes, and the lower front and rear walls of the first right vertical sleeve 41 are formed with positioning through holes corresponding to the connecting through holes.

[0048] Furthermore, the bottom support leg device 60 includes an upper outer sleeve 61 with a rectangular cross-section. Two connecting blocks 62 are fixed on the left and right side walls of the bottom of the upper outer sleeve 61. A bottom sleeve 63 is inserted into the lower part of the upper outer sleeve 61. The outer side wall of the bottom sleeve 63 is close to and cooperates with the inner side wall of the upper outer sleeve 61. An upper connecting seat is fixed to the top of the upper outer sleeve 61. A second hydraulic cylinder 64 with an external displacement sensor is inserted into the upper outer sleeve 61 and the bottom sleeve 63. The top of the second hydraulic cylinder 64 is movably connected to the upper connecting seat through a hinge shaft. The bottom end of the push rod of the second hydraulic cylinder 64 is movably connected to the lower connecting seat through a hinge shaft. The lower connecting seat is fixed to the top surface of the bottom plate of the bottom sleeve 63.

[0049] Furthermore, an inclined support beam 22 is fixed to the right side of the support leg beam 20, and the bottom end of the inclined support beam 22 is fixedly connected to the first right vertical sleeve 41 by bolts.

[0050] Furthermore, the upper outer sleeve 61 has corresponding connecting through holes formed on its front and rear wall plates, and the bottom sleeve 63 has multiple corresponding positioning through holes formed on its front and rear wall plates, with all positioning through holes corresponding to the corresponding connecting through holes.

[0051] In this embodiment, one side of the bridge erecting machine is installed on the existing bridge, and the other side is located on the right side of the bridge, on the top surface of the cap beam fixed on the ground (which is on the top surface of the pier fixed on the top surface of the corresponding expanded abutment 100). However, the top surface of the expanded abutment 100 on this side does not have piers or bridge piers installed. At this time, when this embodiment moves forward, its temporary long support leg 40 needs to be supported when it moves to this location.

[0052] The bottom support leg device 60 is lowered by two manual chain hoists 50 until it approaches the top surface of the expanded pier 100. At the same time, it is necessary to ensure that the corresponding connecting through hole of the second right vertical sleeve 42 is aligned with the positioning through hole formed on the front and rear wall plates of the lower part of the first right vertical sleeve 41. The two are fixed by inserting positioning pins. Then, the bottom end of the inclined support beam 22 is fixed to the first right vertical sleeve 41 by bolts to further support the first right vertical sleeve 41.

[0053] Then, the push rod of the second hydraulic cylinder 64 pushes the bottom plate of the bottom sleeve 63 to press against the top surface of the expanded support platform 100 to achieve support. At this time, its external displacement sensor can feed back the displacement to the control host (the control host is electrically connected to all electrical components through electrical connection lines to achieve control, which is a conventional structure and will not be described in detail here). The control host controls the corresponding hydraulic system control valves and other components to operate (which is a conventional structure and operation method and will not be described in detail here). At this time, the connecting through hole of the upper outer sleeve 61 is aligned with the corresponding positioning through hole of the bottom sleeve 63, and it can be fixed by inserting a pin.

[0054] Then, you can proceed with the operation.

[0055] When it is necessary to retract the bottom plate of the first bottom support leg 35 of the temporary short support leg 30, simply pull out the corresponding pin, and then retract it by pushing the rod of the first hydraulic cylinder 34.

[0056] When it is necessary to retract the temporary long support leg 40, firstly, all the corresponding pins are disassembled. Then, the bottom plate of the bottom sleeve 63 is retracted by the push rod of the second hydraulic cylinder 64. Then, the bolts connecting the bottom end of the inclined support beam 22 to the first right vertical sleeve 41 are disassembled. Then, the chains are retracted by manually controlling the two hand chain hoists 50. At this time, the second right vertical sleeve 42 is retracted into the first right vertical sleeve 41. Then, the first right vertical sleeve 41 is raised to the highest position, completing the complete retraction.

[0057] This embodiment is easy to operate and has good results.

[0058] The bridge erection process in this embodiment is basically the same as that of the bridge erection machine for integrated pier and beam construction described in Chinese Patent Application No. 202110702656.8, therefore, it will not be described in detail here.

[0059] The main difference lies in the method of transporting the beam. The beam is connected to the lifting connectors of the two lifting transverse beams 85 of the front lifting trolley 600. After being moved to the installation position, two rotary reduction motors 71 operate, causing two drive gears 72 to rotate the transmission gears 74, resulting in a 180° horizontal rotation of the beam. This ensures the beam's length is aligned front-to-back and its width is aligned left-to-right, allowing it to be placed onto the cap beam 700 on the corresponding pier. (See attached diagram.) Figure 3 , 4 As shown in Figure 5.

[0060] This embodiment has good performance.

[0061] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A single-sided bridge erecting machine, comprising a main beam (10) composed of two main beams (11) extending forward and backward on the left and right sides, a tail support leg (200) installed at the bottom of the rear end of the main beam (10), a middle support leg device (300) provided at the bottom of the middle part of the main beam (10), a front support leg device (400) provided below the main beam (10) at the front part of the middle support leg device (300), and a first connecting beam (12) installed at the bottom of the front end of the main beam (10), characterized in that: The top surfaces of the two main beams (11) are fixed with flat steel guide rails (111) extending forward and backward. The rear crane trolley (500) and the front crane trolley (600) are located on the two flat steel guide rails (111). A horizontal fixed plate (70) is fixed to the bottom of the movable pulley seat of the front lifting trolley (600). A rotary reduction motor (71) is fixed to the left and right sides of the top surface of the horizontal fixed plate (70). The bottom end of the output shaft of the rotary reduction motor (71) extends out of the horizontal fixed plate (70) and is fixed with a drive gear (72). A vertical main shaft (73) is movably connected to the middle of the horizontal fixed plate (70) through a bearing. The bottom of the vertical main shaft (73) extends out of the bottom surface of the horizontal fixed plate (70) and is fixed with a transmission gear (74). The two drive gears (72) mesh with the transmission gear (74). A connecting lifting device (80) is fixed to the lower part of the vertical main shaft (73). The bottom of the first connecting beam (12) is movably connected to a horizontal rotating connecting seat (13), and the middle part of the horizontal rotating connecting seat (13) is movably connected to an upper rotating seat (14) via a hinge shaft. The bottom surfaces of the two upper rotating seats (14) are fixed to the same left and right extending support leg beam (20). Telescopic sleeves (21) are fixed at the left and right sides of the support leg beam (20). A temporary short support leg (30) is installed in the telescopic sleeve (21) on the left side, and a temporary long support leg (40) is installed on the telescopic sleeve (21) on the right side. The bottom surfaces of the support beams (20) on both sides of the right telescopic sleeve (21) are equipped with hand-operated hoists (50). The bottom of the temporary long support leg (40) is fixed with two connecting blocks (62) on the outer bottom of the upper sleeve (61) of the bottom support leg device (60). The hook of the hand-operated hoist (50) is hooked onto the corresponding connecting block (62).

2. The single-sided bridge erecting machine according to claim 1, characterized in that: The bottom plate of the first bottom support leg (35) of the temporary short support leg (30) presses against the top surface of the right side of the bridge. An extended pier (100) is fixed at the ground on the right side of the bridge, and the bottom plate of the bottom support leg device (60) presses against the top surface of the extended pier (100).

3. A single-sided bridge erecting machine according to claim 1, characterized in that: The connecting hanger (80) includes an upper connecting rod (81), the upper part of which is fixed to the lower part of the upper vertical main shaft (73). The lower part of the upper connecting rod (81) is movably connected to a connecting beam (82) extending forward and backward via a hinge shaft. The front or rear part of the top surface of the connecting beam (82) is movably connected to an oblique pushing cylinder (83) via a hinge shaft. The end of the push rod of the oblique pushing cylinder (83) is movably connected to a connecting seat fixed on the upper side wall of the upper connecting rod (81) via a hinge shaft. The connecting beam (82) is provided with a movable frame (84) at the front and rear. The upper transverse beam of the movable frame (84) is located on the top surface of the connecting beam (82). The left and right vertical beams of the movable frame (84) are located on the left and right sides of the connecting beam (82). A transverse plate extending to the left and right is fixed between the bottom of the two side vertical beams. The two transverse plates are located below the connecting beam (82). The middle of the two transverse plates is movably connected to a lifting transverse beam (85) extending to the left and right through a hinge shaft. A lifting connecting seat is fixed on the left and right sides of the bottom surface of the lifting transverse beam (85).

4. A single-sided bridge erecting machine according to claim 3, characterized in that: The front and rear sides of the left and right side plates of the connecting beam (82) are each equipped with an adjusting screw (86) extending forward and backward. The front and rear sides of the adjusting screw (86) are inserted into the vertical plates of the corresponding two adjusting seats fixed on the outer side wall of the connecting beam (82). The middle part of the adjusting screw (86) is inserted into the corresponding side vertical beam. The front and rear sides of the adjusting screw (86) are each screwed with a plurality of adjusting nuts (87). The inner end face of the adjusting nut (87) at the end is pressed against the end face of the vertical plate of the corresponding adjusting seat. The side vertical beam is clamped between the two adjusting nuts (87) in the middle.

5. A single-sided bridge erecting machine according to claim 2, characterized in that: The temporary short support leg (30) includes a left connecting sleeve (32). The upper part of the left connecting sleeve (32) is located in the left telescopic sleeve outer sleeve (21), and its outer side wall is fixed to the inner side wall of the left telescopic sleeve outer sleeve (21). The lower part of the left connecting sleeve (32) extends out of the bottom end of the left telescopic sleeve outer sleeve (21). A first hydraulic cylinder connecting seat (33) is fixed to the upper part of the left connecting sleeve (32). A first hydraulic cylinder (34) with an external displacement sensor is located in the left connecting sleeve (32). The top of the first hydraulic cylinder (34) is movably connected to the first hydraulic cylinder connecting seat (33) via a hinge shaft. The bottom end of the push rod of the first hydraulic cylinder (34) is movably connected to the connecting seat via a hinge shaft. The bottom surface of the connecting seat is fixed to the top surface of the bottom plate of the first bottom support leg (35). The first bottom support leg (35) is sleeve-shaped and is inserted into the left connecting sleeve (32). Its outer side wall is close to and cooperates with the inner side wall of the left connecting sleeve (32). The first hydraulic cylinder (34) is inserted into the first bottom support leg (35). The cross-sections of the telescopic sleeve (21), the left connecting sleeve (32), and the first bottom support leg (35) are all rectangular; The first bottom support leg (35) has multiple positioning through holes formed on its front and rear walls, which correspond to the connecting through holes formed on the front and rear walls of the left connecting sleeve (32).

6. A single-sided bridge erecting machine according to claim 1, characterized in that: The bottom surfaces of the support leg beams (20) on both sides of the right telescopic sleeve (21) are movably connected to a hand chain hoist (50) via a hinge shaft.

7. A single-sided bridge erecting machine according to claim 1, characterized in that: The temporary long support leg (40) includes a first right vertical sleeve (41) with a rectangular cross-section. The first right vertical sleeve (41) is inserted into the right telescopic sleeve (21). The outer side wall of the first right vertical sleeve (41) is close to the inner side wall of the right telescopic sleeve (21) and cooperates with the right telescopic sleeve (21). The lower part of the first right vertical sleeve (41) is fitted with a second right vertical sleeve (42). The second right vertical sleeve (42) cooperates with the first right vertical sleeve (41). The lower part of the second right vertical sleeve (42) extends out of the bottom end of the first right vertical sleeve (41) and is fixedly connected to the top end of the upper outer sleeve (61) of the bottom support leg device (60) by bolts.

8. A single-sided bridge erecting machine according to claim 6, characterized in that: The bottom support leg device (60) includes an upper outer sleeve (61) with a rectangular cross-section. Two connecting blocks (62) are fixed on the left and right side walls of the bottom of the upper outer sleeve (61). A bottom sleeve (63) is inserted into the lower part of the upper outer sleeve (61). The outer side wall of the bottom sleeve (63) is close to and cooperates with the inner side wall of the upper outer sleeve (61). An upper connecting seat is fixed on the top of the upper outer sleeve (61). A second hydraulic cylinder (64) with an external displacement sensor is inserted into the upper outer sleeve (61) and the bottom sleeve (63). The top of the second hydraulic cylinder (64) is movably connected to the upper connecting seat through a hinge shaft. The bottom end of the push rod of the second hydraulic cylinder (64) is movably connected to the lower connecting seat through a hinge shaft. The lower connecting seat is fixed on the top surface of the bottom plate of the bottom sleeve (63).

9. A single-sided bridge erecting machine according to claim 8, characterized in that: An oblique support beam (22) is fixed to the right side of the support beam (20), and the bottom end of the oblique support beam (22) is fixed to the first right vertical sleeve (41) by bolts.

10. A single-sided bridge erecting machine according to claim 1, characterized in that: Left and right extending movable flat steel guide rails (1) are fixed on the top surface of the bridge and the beam slab laid on the right side below the middle outrigger device (300) and the front outrigger device (400), and the bottom movable wheels of the middle outrigger device (300) and the front outrigger device (400) are placed on the corresponding movable flat steel guide rails (1).

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