Half-moon type guardrail system used on bridge girder erection machine and use method of half-moon type guardrail system

Abstract

The invention discloses a half-moon type guardrail system used on a bridge girder erection machine, and belongs to the technical field of auxiliary devices of bridge girder erection machines. The structure comprises a pier; a box girder is arranged on the support on one side of the pier; a second column of the bridge girder erection machine is placed on the top of the box girder and close to the front end face of the box girder. A protective trailer assembly and two arc-shaped guardrails are mounted at the edge position of the front end of one side, not provided with the box girder, of the pier; the protective hanging bucket assembly is arranged in the middle, and one ends of the arc-shaped guardrails are detachably installed on the two sides of the protective hanging bucket assembly; the other end of the arc-shaped guardrail is arranged close to the box girder; a push rod is arranged on the second column. The push rod is arranged in the horizontal direction, and one end of the push rod transversely extends and crosses the side of the box girder. A sliding block is movably mounted on the push rod; the sliding block is connected with a hanging ring through a cable; a lifting rope is arranged between the lifting ring and the arc-shaped guardrail; the problems that a guardrail structure on a bridge pier is inconvenient to disassemble and assemble, time consumption is long, and the construction progress and cost are affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge erection machine auxiliary devices, and in particular to a half-moon type guardrail system used on a bridge erection machine and a use method thereof. Background Art

[0002] When working with a bridge erection machine to construct a bridge pier, the operator needs to go down to the pier surface to operate. Since the design of the support on the pier is generally close to the edge of the pier, there is a certain safety risk when the operator bypasses the support, so it is necessary to provide protective equipment around the pier. The current conventional disassembly and assembly of the protective structure requires the cooperation of a crane and other lifting protective devices to operate as a whole; and the bridge erection machine needs to be frequently moved during operation, which requires the protective structure to be able to be quickly disassembled and assembled, but the current guardrail structure obviously cannot meet this demand, which is the main purpose of this application. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a half-moon guardrail system for a bridge erecting machine, so as to solve the problem that the protective guardrail structure is inconvenient to disassemble and assemble, time-consuming, and requires a lot of manpower for disassembly and assembly when cooperating with the bridge erecting machine to construct bridge piers, thus affecting the construction progress and cost.

[0004] To solve the above problems, the present invention provides the following technical solutions: A half-moon guardrail system for a bridge erecting machine; it comprises a bridge pier; a box beam is arranged on a support on one side of the bridge pier; the second column of the bridge erecting machine is placed on the top of the box beam near its front end face; a protective bucket assembly and two arc-shaped guardrails are installed at the edge position of the front end of the side of the pier where the box beam is not arranged; the protective bucket assembly is arranged in the middle, and one end of the arc-shaped guardrail is detachably installed on both sides of the protective bucket assembly; the other end of the arc-shaped guardrail is arranged close to the box beam; a push rod is arranged on the second column; the push rod is arranged in the horizontal direction, and one end of the push rod extends horizontally and passes over the side of the box beam; a slider is movably installed on the push rod; a lifting ring is connected to the slider through a cable; a lifting rope is arranged between the lifting ring and the arc-shaped guardrail; when the arc-shaped guardrail is installed on the bridge pier, its top height exceeds the height of the bridge pier by not less than 1.5m.

[0005] Preferably, an embedded part is also provided on the bridge pier; the protective bucket assembly and the arc-shaped guardrail are detachably connected to the embedded part via a safety cable.

[0006] Furthermore, the protective bucket assembly includes a strip-shaped frame bucket; one end side surface of the frame bucket is arranged on the front end surface of the pier, and a plurality of T-shaped rods are also arranged on this end side surface of the frame bucket, and the right-angle position of the middle rod on the T-shaped rod is clamped at the angle position of the end of the pier; a positioning sleeve is arranged on the T-shaped rod; and the arc-shaped guardrail can be detachably installed on the positioning sleeve.

[0007] Furthermore, there are two protective bucket assemblies, which are respectively arranged on the left and right sides of the top groove on the pier; the two protective bucket assemblies are in the same straight line, and a functional cross bar is arranged between two opposite T-shaped rods on the two bucket assemblies; two safety cables are connected to the functional cross bar through pull rings, and the two safety cables are respectively connected to two embedded parts located in the grooves of the pier.

[0008] Furthermore, a middle guardrail is hingedly installed on the functional crossbar; positioning rods are hingedly installed on both sides of the middle guardrail; and one end of the positioning rod is detachably installed on the frame bucket.

[0009] Preferably, the arc-shaped guardrail includes a guardrail body in the shape of a grid; a horizontally placed pole is arranged on the lower side of the guardrail body; the other end of the pole is placed on the top surface of the pier; a plug rod for connecting with the protective bucket assembly is arranged on the side of the arc-shaped guardrail; and a pull rope is also detachably arranged between the bottom of the arc-shaped guardrail and the embedded parts of the pier.

[0010] Preferably, a pair of swing frames are rotatably mounted on the front side end surface of the second column; the swing frame rotation axis is arranged vertically; the push rod is horizontally mounted on the swing frame; a guide groove is opened on the push rod; and the slider is movably mounted on the guide groove.

[0011] Furthermore, a guide cylinder is arranged at the beam seam of column No. 2; the guide cylinder is arranged along the length direction of the box beam; a driving rod is movably installed in the guide cylinder; a connecting rod is also arranged between the driving rod and the swing frame; the driving rod can drive the swing frame to rotate relative to column No. 2 through the connecting rod; a limit clamp for limiting the movement of the driving rod is also arranged between the driving rod and column No. 2.

[0012] Furthermore, the push rod is a straight rod member with an I-shaped cross section; the swing frame is a triangular frame structure; the swing frame is arranged on the upper top surface of the push rod, and the slider is arranged on the lower side of the push rod.

[0013] The invention also discloses a method for using a half-moon type guardrail system on a bridge erecting machine, which comprises the following steps: S1. First, install the protective bucket assembly on the front end surface of the pier and connect it to the embedded parts of the pier through a safety cable; S2. When it is necessary to remove the arc guardrail from the bridge pier, untie the pull rope between the embedded parts connecting the arc guardrail and the bridge pier, and then take out the plug rod on the arc guardrail from the positioning sleeve at the end of the protective bucket assembly; S3, remove the limit clamp on the driving rod at the beam gap position, and then push the driving rod forward. During this process, the driving rod will drive the swing frame to rotate through the connecting rod to make the push rod away from the second column; S4. Thereafter, the slider is pushed along the push rod toward the outside of the box girder until the arc guardrail moves to a position where it will not interfere with other construction actions.

[0014] Beneficial effects of the present invention: The present invention provides a guardrail system used in conjunction with a bridge erection machine for the construction of bridge piers, wherein a protective hanging bucket is arranged on the construction side of the pier to provide an activity space for operators to bypass the supports on the piers, and an arc-shaped guardrail is arranged on the end side of the protective hanging bucket corresponding to the corner position of the side of the pier, thereby ensuring the protective effect of the construction space between the pier supports and the box girder; in addition, in order to conveniently disassemble and assemble the arc-shaped guardrail, the present invention also arranges a matching push rod and a slider on the side surface of the end of the second column of the bridge erection machine, and connects the slider and the arc-shaped guardrail with a lifting ring and a lifting rope, and relies on the movement of the slider on the push rod to realize the rapid adjustment of the arc-shaped guardrail relative to the box girder. The beam moves quickly, and when the slider moves to the tail of the extended end of the push rod, the arc guardrail will be expanded to the outside in the width direction of the box beam, so as to avoid interference with the equipment under construction; when the slider moves to the inside of the push rod, it can ensure that the arc guardrail is close to the pier while providing an inward pulling force, and the tension provided by the safety cable through the embedded parts on the pier can ensure the installation reliability of the guardrail device; it is easy to operate and can quickly install the guardrail without the use of additional cranes and other equipment; it greatly improves the speed of disassembly and assembly, reduces labor costs, and effectively shortens the construction period, which is suitable for promotion and use in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure when the arc-shaped guardrail in the device of the present embodiment is close to the bridge pier; Figure 2 yes Figure 1 Partial cross-sectional view along AA axis; Figure 3 is a schematic diagram of the structure of the device of the present embodiment when the arc-shaped guardrail is away from the bridge pier; Figure 4 yes Figure 3 Partial cross-sectional view along the BB axis; Figure 5 is a schematic diagram of a planar four-bar mechanism formed by the second column, the guide cylinder, the driving rod, the connecting rod and the rocker rod in this embodiment; Figure 6 is a schematic diagram of the three-dimensional structure of the protective bucket assembly and the arc-shaped guardrail in the embodiment when they are connected; Figure 7 yes Figure 4 Schematic diagram of the three-dimensional structure of the middle device after removing the lower lifting ring and the arc guardrail; Explanation of the reference numerals: 1. Bridge pier, 1A. Embedded parts, 2. Box beam, 3. Column No. 2, 4. Protective bucket assembly, 4A. Frame bucket, 4B. T-bar, 4C. Positioning sleeve, 4D. Functional cross bar, 5. Arc guardrail, 6. Push rod, 7. Slider, 8. Connecting rod, 9. Lifting ring, 10. Swing frame, 11. Guide cylinder, 12. Driving rod. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Example: Reference Figures 1 to 7 , this embodiment provides a half-moon guardrail system for a bridge erecting machine; it includes a pier 1; a box girder 2 is arranged on a support on one side of the pier 1; the second column 3 of the bridge erecting machine is placed on the top of the box girder 2 near its front end face; a protective bucket assembly 4 and two arc guardrails 5 are installed at the edge position of the front end of the side where the box girder 2 is not arranged on the pier 1; the protective bucket assembly 4 is arranged in the middle, and one end of the arc guardrail 5 is detachably installed on both sides of the protective bucket assembly 4; the other end of the arc guardrail 5 is arranged close to the box girder 2; a push rod 6 is arranged on the second column 3; the push rod 6 is arranged in the horizontal direction, and one end of the push rod 6 extends laterally and crosses the side of the box girder 2; a slider 7 is movably installed on the push rod 6; a lifting ring 9 is connected to the slider 7 through a cable; a lifting rope is arranged between the lifting ring 9 and the arc guardrail 5; when the arc guardrail 5 is installed on the pier 1.

[0017] An embedded part 1A is also provided on the bridge pier 1; the protective bucket assembly 4 and the arc-shaped guardrail 5 are both detachably connected to the embedded part 1A via a safety cable.

[0018] The protective bucket assembly 4 includes a strip-shaped frame bucket 4A; one end side of the frame bucket 4A is attached to the front end face of the pier 1, and a plurality of T-shaped rods 4B are also arranged on the end side of the frame bucket 4A, and the right angle position of the middle rod on the T-shaped rod 4B is stuck at the angle position of the end of the pier 1; a positioning sleeve 4C is arranged on the T-shaped rod 4B; and the arc guardrail 5 is detachably mounted on the positioning sleeve 4C. In this embodiment, the cross section of the frame bucket 4A is a right-angled trapezoidal structure, and the end plane corresponding to one of its right-angled sides is attached to the front side wall of the pier.

[0019] There are two protective bucket assemblies 4, which are respectively arranged at the left and right sides of the top groove of the bridge pier 1; the two protective bucket assemblies 4 are in the same straight line, and a functional cross bar 4D is arranged between two opposite T-shaped bars 4B on the two bucket assemblies 4; two safety cables are connected to the functional cross bar 4D through a pull ring, and the two safety cables are respectively connected to two embedded parts 1A located in the groove of the bridge pier 1. Considering the weight and force factors, two protective buckets are arranged in this embodiment, and the two are connected by a cross bar, which optimizes the force without affecting the consistency of the overall structure of the protective bucket.

[0020] A middle guardrail is hingedly mounted on the functional crossbar 4D; positioning rods are hingedly mounted on both sides of the middle guardrail; one end of the positioning rod is detachably mounted on the frame bucket 4A. The middle guardrail in this embodiment is not shown in the figure, and the middle guardrail is also detachably mounted on the protective bucket assembly, and its function is to provide local protection for the gap between the two protective bucket assemblies.

[0021] The arc-shaped guardrail 5 includes a guardrail body in the shape of a grid; a horizontally placed pole is arranged on the lower side of the guardrail body; the other end of the pole is placed on the top surface of the pier; a plug rod for connecting with the protective bucket assembly 4 is arranged on the side of the arc-shaped guardrail 5; and a pull rope is also detachably arranged between the bottom of the arc-shaped guardrail 5 and the embedded parts of the pier 1.

[0022] A pair of swing frames 10 are rotatably mounted on the front side end surface of the second column 3; the swing frame 10 has a rotating axis arranged vertically; the push rod 6 is horizontally mounted on the swing frame; a guide groove is provided on the push rod 6; and the slider 7 is movably mounted on the guide groove.

[0023] A guide cylinder 11 is provided at the beam seam of the No. 2 column 3; the guide cylinder 11 is provided along the length direction of the box beam 2; a driving rod 12 is movably installed in the guide cylinder 11; a connecting rod 8 is also provided between the driving rod 12 and the swing frame 10; the driving rod 11 can drive the swing frame 10 to rotate relative to the No. 2 column through the connecting rod 8; a limiting clamp for limiting the movement of the driving rod 11 is also provided between the driving rod 11 and the No. 2 column 3. In this embodiment, the limiting clamp is a limiting pin structure provided on the driving rod and capable of clamping the driving rod with the beam seam position of the No. 2 column.

[0024] The push rod 6 is a straight rod component with an I-shaped cross section; the swing frame 10 is a triangular frame structure; the swing frame 10 is arranged on the upper top surface of the push rod 6, and the slider 7 is arranged on the lower side of the push rod 6.

[0025] The invention also discloses a method for using a half-moon type guardrail system on a bridge erecting machine, which comprises the following steps: S1, first install the protective bucket assembly 4 on the front end surface of the pier 1, and connect it to the embedded part 1A of the pier 1 through a safety cable; S2. When it is necessary to remove the arc guardrail 5 from the bridge pier 1, untie the pull rope between the arc guardrail 5 and the embedded parts of the bridge pier 1, and then take out the plug rod on the arc guardrail 5 from the positioning sleeve 4C at the end of the protective bucket assembly 4; S3, remove the limit clamp on the driving rod 11 at the beam gap position, and then push the driving rod 11 forward. During this process, the driving rod 11 will drive the swing frame 10 to rotate through the connecting rod 8 to make the push rod 6 away from the second column 3; S4. Thereafter, the slider 7 is pushed along the push rod 6 toward the outside of the box beam 2 until the arc-shaped guardrail 5 moves to a position where it will not interfere with other construction actions.

[0026] When the arc guardrail 5 needs to be moved closer to the bridge pier 1 to form protection, it is only necessary to perform the reverse process from step S4 to S2.

Claims

1. A half-moon guardrail system for a bridge erecting machine, comprising a bridge pier (1); a box beam (2) is arranged on a side support of the bridge pier (1); a second column (3) of the bridge erecting machine is placed on the top of the box beam (2) near the front end surface thereof; and the characteristics are: A protective bucket assembly (4) and two arc-shaped guardrails (5) are installed at the edge position of the front end of a side of the pier (1) where the box girder (2) is not installed; the protective bucket assembly (4) is arranged in the middle, and one end of the arc-shaped guardrail (5) is detachably installed on both sides of the protective bucket assembly (4); the other end of the arc-shaped guardrail (5) is arranged close to the box girder (2); a push rod (6) is arranged on the second column (3); the push rod (6) is arranged in the horizontal direction, and one end of the push rod (6) extends horizontally and passes over the side of the box girder (2); a slider (7) is movably installed on the push rod (6); a lifting ring (9) is connected to the slider (7) through a cable; a lifting rope is arranged between the lifting ring (9) and the arc-shaped guardrail (5); when the arc-shaped guardrail (5) is installed on the pier (1), its top height exceeds the height of the pier by not less than 1.5m.

2. The half-moon type guardrail system for a bridge erecting machine according to claim 1, characterized in that: An embedded part (1A) is also provided on the bridge pier (1); the protective bucket assembly (4) and the arc-shaped guardrail (5) are both detachably connected to the embedded part (1A) via a safety cable.

3. The half-moon type guardrail system for a bridge erecting machine according to claim 2, characterized in that: The protective bucket assembly (4) comprises a strip-shaped frame bucket (4A); one end side surface of the frame bucket (4A) is arranged on the front end surface of the pier (1), and a plurality of T-shaped rods (4B) are also arranged on the end side surface of the frame bucket (4A), and the right angle position of the middle rod on the T-shaped rod (4B) is clamped at the angle position of the end of the pier (1); a positioning sleeve (4C) is arranged on the T-shaped rod (4B); and the arc-shaped guardrail (5) is detachably mounted on the positioning sleeve (4C).

4. The half-moon type guardrail system for a bridge erecting machine according to claim 3, characterized in that: Two protective bucket assemblies (4) are provided, and are respectively provided at the positions corresponding to the left and right sides of the top groove on the bridge pier (1); the two protective bucket assemblies (4) are located on the same straight line, and a functional cross bar (4D) is provided between two opposite T-shaped bars (4B) on the two bucket assemblies (4); two safety cables are connected to the functional cross bar (4D) via a pull ring, and the two safety cables are respectively connected to two embedded parts (1A) located at the groove of the bridge pier (1).

5. The half-moon type guardrail system for a bridge erecting machine according to claim 4, characterized in that: A middle guardrail is hingedly mounted on the functional crossbar (4D); positioning rods are hingedly mounted on both sides of the middle guardrail; and one end of the positioning rod is detachably mounted on the frame bucket (4A).

6. The half-moon type guardrail system for a bridge erecting machine according to claim 1, characterized in that: The arc-shaped guardrail (5) comprises a guardrail body in the shape of a grid; a horizontally placed pole is arranged on the lower side of the guardrail body; the other end of the pole is placed on the top surface of the bridge pier; a plug rod for connecting with the protective bucket assembly (4) is arranged on the side of the arc-shaped guardrail (5); and a pull rope is also detachably arranged between the bottom of the arc-shaped guardrail (5) and the embedded part of the bridge pier (1).

7. The half-moon type guardrail system for a bridge erecting machine according to claim 1, characterized in that: A pair of swing frames (10) are rotatably mounted on the front end surface of the second column (3); the swing frames (10) have rotation axes arranged in the vertical direction; the push rods (6) are horizontally mounted on the swing frames; a guide groove is formed on the push rods (6); and the slider (7) is movably mounted on the guide groove.

8. The half-moon type guardrail system for a bridge erecting machine according to claim 7, characterized in that: A guide cylinder (11) is arranged at the beam seam of the second column (3); the guide cylinder (11) is arranged along the length direction of the box beam (2); a driving rod (12) is movably mounted in the guide cylinder (11); a connecting rod (8) is further arranged between the driving rod (12) and the swing frame (10); the driving rod (11) can drive the swing frame (10) to rotate relative to the second column through the connecting rod (8); and a limit clamp for limiting the movement of the driving rod (11) is further arranged between the driving rod (11) and the second column (3).

9. The half-moon type guardrail system for a bridge erecting machine according to claim 7, characterized in that: The push rod (6) is a straight rod member with an I-shaped cross section; the swing frame (10) is a triangular frame structure; the swing frame (10) is arranged on the upper top surface of the push rod (6), and the slider (7) is arranged on the lower side of the push rod (6).

10. A method for using a half-moon type guardrail system for a bridge erecting machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, first installing the protective bucket assembly (4) on the front end surface of the pier (1), and connecting it to the embedded part (1A) of the pier (1) via a safety cable; S2. When it is necessary to remove the arc-shaped guardrail (5) from the bridge pier (1), untie the pull rope between the embedded parts connecting the arc-shaped guardrail (5) and the bridge pier (1), and then remove the insertion rod on the arc-shaped guardrail (5) from the positioning sleeve (4C) at the end of the protective bucket assembly (4); S3, removing the limit clamp on the driving rod (11) at the beam gap position, and then pushing the driving rod (11) forward. During this process, the driving rod (11) will drive the swing frame (10) to rotate through the connecting rod (8) so that the push rod (6) is away from the second column (3); S4. Thereafter, the slider (7) is pushed along the push rod (6) toward the outside of the box beam (2) until the arc-shaped guardrail (5) moves to a position where it will not interfere with other construction actions.

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