Movable construction device for outer side of bridge

Abstract

The utility model relates to a movable construction device on the outer side of a bridge, which belongs to the field of bridge operation equipment and comprises a support, a traveling mechanism, a parking mechanism, a cross beam, a vertical frame, a working platform and a first lifting mechanism. The walking mechanism is arranged at the bottom of the support. The parking mechanism is arranged on the support and used for fixing the relative position between the movable construction device and the bridge. The cross beam is arranged on one side of the support and connected with the support. The cross beam is a telescopic rod and comprises a sleeve beam and a telescopic beam; and the telescopic beam slides in the sleeve beam. The vertical frame is arranged at one end of the beam and slidably connected to the end, away from the support, of the beam. The working platform is arranged at the bottom end of the vertical frame and close to one side of the bracket; the working platform is slidably connected with the vertical frame. The first lifting mechanism is used for controlling the working platform to move on the vertical frame.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge operation equipment technical field, especially relate to a bridge outside movable construction device. BACKGROUND

[0002] With the rapid development of modern traffic construction, the bridge as the important traffic hub connecting two banks, its construction quality and efficiency indeed more and more people's attention. Bridge pier welding, formwork installation and other operations and bridge deck pavement, railing installation and other work are important factors affecting the quality of bridge. Personnel need to be in the bridge outside hoisting platform construction during construction, there is a great security risk, and need to move back and forth crane, seriously affect the construction efficiency.

[0003] The utility model patent with the publication number CN210797269U provides a platform car for bridge guardrail formwork dismounting. It can move on the bridge and provide a working platform, which solves the above problems to some extent.

[0004] But the horizontal distance between the working platform and the bridge in the above prior art document cannot be adjusted, and cannot be adjusted according to actual use requirements. And the lifting form of the working platform is single, when the winch fails, the construction personnel are easy to be trapped on the working platform, causing certain danger. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the related art, the utility model provides a bridge outside movable construction device, which is supported by a support in an integral structure. The walking mechanism enables the device to have a moving ability, facilitating operation at different positions of the bridge. The parking mechanism can fix the relative position of the device and the bridge, ensuring the stability of the device during construction. The length of the cross beam can be changed to adjust the operation range according to actual construction requirements. The vertical support can slide at one end of the cross beam, further flexibly adjusting the working position. The working platform is arranged at the bottom end of the vertical support and is slidably connected with the vertical support. The first lifting mechanism can control the movement of the working platform on the vertical support, meeting the construction operation requirements of different heights, and providing a flexible and movable construction device for the construction outside the bridge, to solve the technical problem of low construction efficiency in the prior art.

[0006] The utility model provides a bridge outside movable construction device, comprising:

[0007] A support;

[0008] A walking mechanism is arranged at the bottom of the support;

[0009] A parking mechanism is arranged on the support, and the parking mechanism is used to fix the relative position between the movable construction device and the bridge;

[0010] a crossbeam, arranged on one side of the support and connected with the support; the length of the crossbeam can be changed;

[0011] a vertical frame, arranged on one end of the crossbeam, and slidably connected with the end of the crossbeam away from the support;

[0012] a working platform, arranged on the bottom end of the vertical frame and close to one side of the support; the working platform is slidably connected with the vertical frame;

[0013] a first lifting mechanism, used for controlling the movement of the working platform on the vertical frame.

[0014] In the technical solution, the support provides support for the overall structure; the walking mechanism enables the device to have the mobility, facilitating the operation at different positions of the bridge; the parking mechanism can fix the relative position of the device and the bridge, ensuring the stability of the device during the construction process; the length of the crossbeam can be changed, and the operation range can be adjusted according to the actual construction requirements; the vertical frame can slide at one end of the crossbeam, further flexibly adjusting the working position; the working platform is arranged at the bottom end of the vertical frame and is slidably connected with the vertical frame, and in combination with the first lifting mechanism, the movement of the working platform on the vertical frame can be controlled, meeting the construction operation requirements of different heights, and providing a flexible and movable construction device for the construction outside the bridge.

[0015] In some embodiments, a second lifting mechanism is further included, used for controlling the up-and-down movement of the vertical frame and the working platform as a whole.

[0016] In the technical solution, the second lifting mechanism is added, so that the vertical frame and the working platform as a whole can move up and down, greatly expanding the operation range of the construction device in the vertical direction compared with only the working platform moving on the vertical frame, and the device can adapt to more complex construction scenes outside the bridge, improving the applicability and flexibility of the device. Moreover, when the first lifting mechanism is damaged, the working platform can be raised by the second lifting mechanism to enable the workers to reach the safety area, improving the safety.

[0017] In some embodiments, the crossbeam is a telescopic rod, including a sleeve beam and a telescopic beam; the telescopic beam slides in the sleeve beam; the sleeve beam is connected with the support; and the telescopic beam is connected with the vertical frame.

[0018] In the technical solution, this design not only facilitates the change of the length of the crossbeam, but also has a simple and compact structure, and is easy to manufacture and maintain. Meanwhile, the sleeve beam is connected with the support, and the telescopic beam is connected with the vertical frame, so that the structure connection of the whole device is stable, and the operation distance can be flexibly adjusted according to the actual construction situation.

[0019] In some embodiments, the sleeve beam is provided with a plurality of pins inserted through the sleeve beam, and the telescopic beam is provided with a plurality of pin holes along the length direction of the telescopic beam for the pins to be inserted.

[0020] In the technical scheme, the position of the telescopic beam in the sleeve beam can be accurately locked by inserting the pins into different pin holes, so that the length of the cross beam can be accurately controlled, the stability of the length of the cross beam during construction can be ensured, and the accurate requirement of different construction distances can be met.

[0021] In some embodiments, the first lifting mechanism comprises:

[0022] A winch is arranged on the telescopic beam, and an end of a cable is connected to the working platform.

[0023] In the technical scheme, the winch is simple to operate, can stably and accurately control the lifting of the working platform on the vertical frame by controlling the winding and unwinding of the cable, and can facilitate the construction personnel to quickly adjust the position of the working platform according to the construction height requirement, thereby improving the construction efficiency.

[0024] In some embodiments, the second lifting mechanism comprises:

[0025] A motor is arranged on the cross beam;

[0026] A gear is arranged on the output shaft of the motor;

[0027] A rack is arranged on the vertical frame, and the rack is engaged with the gear.

[0028] In the technical scheme, the rack drives the vertical frame to move by rotating the gear driven by the motor, so as to realize the up-down movement of the vertical frame and the working platform as a whole. This driving mode has high transmission efficiency and can provide stable and large driving force, so that the vertical frame and the working platform as a whole can be stably lifted, the construction device can be adapted to construction equipment and materials of different weights placed on the working platform for construction, and the reliability and carrying capacity of the construction device are improved.

[0029] In some embodiments, a limiting disc is arranged on the top of the vertical frame, and the limiting disc is used to contact the upper surface of the cross beam.

[0030] In the technical scheme, when the vertical frame is lowered to the limit position, the limiting disc can contact the upper surface of the cross beam to play a safety limiting role, effectively avoid the vertical frame and the cross beam from being separated due to operation errors and the like, and protect the safety of the construction personnel and equipment.

[0031] In some embodiments, a guardrail is arranged around the upper surface of the working platform, and the height of the guardrail is not less than 0.5 meters.

[0032] The technical scheme provides protection for the construction personnel working on the working platform, prevents the construction personnel from falling from the working platform by accident during the working process, and greatly improves the safety of the construction personnel during work.

[0033] In some embodiments, the walking mechanism includes wheels and a track, the track is used to be fixed to the upper surface of the bridge, and the wheels roll in the track.

[0034] In the technical scheme, the walking mechanism adopts the cooperation of the wheels and the track, the track is fixed to the upper surface of the bridge, and the wheels roll in the track, so that the device moves more stably on the bridge, the track guides the wheels, the movement direction of the device can be ensured, the accuracy and stability of the movement of the device are improved, and the construction operation at a specific position of the bridge is facilitated.

[0035] In some embodiments, the parking mechanism includes a plurality of hydraulic cylinders, and output shafts of the hydraulic cylinders are used to abut the upper surface of the bridge.

[0036] In the technical scheme, the output shafts of the hydraulic cylinders abut the upper surface of the bridge, the device can be fixed firmly on the bridge through the extension and retraction adjustment of the hydraulic cylinders, various external forces generated during the construction process can be effectively resisted, the device can maintain a stable position during the construction process, and the construction quality and safety are not affected by the movement of the device.

[0037] Based on the above technical scheme, in the embodiment of the utility model, the length of the cross beam can be changed, the working range can be adjusted according to actual construction requirements, the vertical frame can slide at one end of the cross beam, and the working position can be further flexibly adjusted, the working platform is arranged at the bottom end of the vertical frame and is in sliding connection with the vertical frame, the first lifting mechanism can be combined to control the movement of the working platform on the vertical frame, different height construction operation requirements can be met, a flexible and movable construction device is provided for bridge outside construction. BRIEF DESCRIPTION OF DRAWINGS

[0038] The drawings described herein are used to provide further understanding of the utility model, constitute a part of this application, the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0039] Figure 1 It is a whole structure schematic view of one embodiment of the utility model bridge outside movable construction device;

[0040] Figure 2 It is a front view of one embodiment of the utility model bridge outside movable construction device;

[0041] Figure 3 It is a structure schematic view of one embodiment of the utility model bridge outside movable construction device.

[0042] Fig.:

[0043] 100, support; 200, walking mechanism; 300, hydraulic cylinder; 400, cross beam; 401, sleeve beam; 402, telescopic beam; 500, vertical support; 600, winch; 601, cable; 700, motor; 800, gear; 900, rack; 110, limit disc; 120, working platform; 130, guardrail. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] The terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0047] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Please refer to all the drawings, in one schematic embodiment of the bridge outside movable construction device of the present application, the bridge outside movable construction device comprises: a support 100, the support 100 provides support for the overall structure; the overall structure is placed above the bridge through the support 100.

[0049] In some embodiments, the bridge-external movable construction device comprises a walking mechanism 200 arranged at the bottom of the support 100, and the walking mechanism 200 is used to move the support 100 on the surface of the bridge. The walking mechanism 200 enables the device to have the moving ability, which facilitates the operation at different positions of the bridge.

[0050] In some embodiments, the bridge-external movable construction device comprises a parking mechanism arranged at the support 100, and the parking mechanism is used to fix the relative position between the movable construction device and the bridge. The parking mechanism can fix the relative position between the device and the bridge, and ensure the stability of the device during the construction.

[0051] In some embodiments, the bridge-external movable construction device comprises a cross beam 400 arranged at one side of the support 100 and connected with the support 100, and the length of the cross beam 400 can be changed. The working range can be adjusted according to the actual construction requirement, and the vertical support 500 can slide at one end of the cross beam 400, so as to further flexibly adjust the working position.

[0052] In some embodiments, the bridge-external movable construction device comprises a vertical support 500 arranged at one end of the cross beam 400 and slidably connected with the cross beam 400 away from the support 100.

[0053] In some embodiments, the bridge-external movable construction device comprises a working platform 120 arranged at the bottom end of the vertical support 500 and close to one side of the support 100, and the working platform 120 is slidably connected with the vertical support 500.

[0054] In some embodiments, the bridge-external movable construction device comprises a first lifting mechanism used to control the movement of the working platform 120 on the vertical support 500.

[0055] According to the above scheme, the working platform 120 is arranged at the bottom end of the vertical support 500 and slidably connected with the vertical support 500, and the first lifting mechanism can control the movement of the working platform 120 on the vertical support 500, so as to meet the construction operation requirement of different heights and provide a flexible and movable construction device for the bridge-external construction.

[0056] In some embodiments, the support 100 is 3.4 meters high and is formed by welding a channel steel and an angle steel. The support 100 is in the form of a rectangular frame, and has stable structure and is not easy to fall down. The rectangular frame structure of the support 100 can bring excellent stability. Compared with other shapes, this structure has stronger ability to resist lateral force and vertical pressure, and greatly reduces the risk of falling down. In the complex construction environment outside the bridge, the support 100 can always keep upright, and effectively ensures the safe and efficient operation of the entire construction device.

[0057] In some embodiments, the support 100 can be provided with counterweights, which can be adjusted according to requirements. The counterweights can effectively enhance the stability of the construction device. When the working platform 120 carries a large amount of construction materials or equipment, and the weight is too large, the counterweights can balance the eccentric moment generated by the working platform 120 by adjusting their own weight and distribution. This is like adding a stable anchor point to the device, avoiding the structure from tipping over due to the shift of the center of gravity. In actual construction, the construction personnel can flexibly adjust the counterweights according to the real-time load of the working platform 120, to ensure that the device can safely operate under various working conditions, greatly improving the safety and reliability of the construction process.

[0058] In some embodiments, a second lifting mechanism is further included, which is used to control the up-and-down movement of the vertical frame 500 and the working platform 120 as a whole. The addition of the second lifting mechanism enables the vertical frame 500 and the working platform 120 as a whole to move up and down, greatly expanding the working range of the construction device in the vertical direction compared to only the working platform 120 moving on the vertical frame 500, and adapting to more complex bridge outside construction scenarios, improving the applicability and flexibility of the device. Moreover, when the first lifting mechanism is damaged, the second lifting mechanism can be used to lift the working platform 120 to reach a safe area for the workers, improving safety.

[0059] In some embodiments, the cross beam 400 is a telescopic rod, which includes a sleeve beam 401 and a telescopic beam 402; the telescopic beam 402 slides in the sleeve beam 401; the sleeve beam 401 is connected with the support 100; and the telescopic beam 402 is connected with the vertical frame 500. This design not only facilitates the change of the length of the cross beam 400, but also has a simple and compact structure, and is easy to manufacture and maintain. At the same time, the sleeve beam 401 is connected with the support 100, and the telescopic beam 402 is connected with the vertical frame 500, so that the structural connection of the entire device is stable, and the working distance can be flexibly adjusted according to the actual construction situation.

[0060] Further, the sleeve beam 401 and the telescopic beam 402 are arranged in the same length direction and horizontally.

[0061] In some embodiments, the top of the sleeve beam 401 is provided with a sling device, which can avoid the sinking of the cross beam 400. The sling device provides reliable auxiliary support for the cross beam 400. When the cross beam 400 bears a large load, the sling device can share the gravity borne by the cross beam 400, effectively avoiding its sinking. This design enhances the load-bearing stability of the cross beam 400, ensuring that the cross beam 400 can still maintain a horizontal state when the working platform 120 is heavily loaded or high-altitude work is performed, and maintaining the structural balance of the entire construction device. By reducing the risk of sinking of the cross beam 400, the sling device prolongs the service life of the cross beam 400, improves the safety and accuracy of construction, and makes the construction process more stable and reliable.

[0062] In some embodiments, the sleeve beam 401 is provided with a plurality of pins, and the telescopic beam 402 is provided with a plurality of pin holes along the length direction of the telescopic beam 402. The position of the telescopic beam 402 in the sleeve beam 401 can be accurately locked by inserting the pins into different pin holes, so as to accurately control the length of the cross beam 400, ensure the stability of the length of the cross beam 400 during construction, and meet the accurate requirements of different construction distances.

[0063] Further, the plurality of pin holes are arranged at intervals along the length direction of the telescopic beam 402, and the interval between any two adjacent pin holes is the same. The plurality of pin holes are arranged at equal intervals along the length direction of the telescopic beam 402, which brings high precision and convenience to the length adjustment of the cross beam 400. The equal interval design makes the length adjustment of the telescopic beam 402 regular, and the operator can quickly find the appropriate pin hole and accurately insert the pin according to the construction requirements, so as to accurately control the length of the cross beam 400. This not only improves the adjustment efficiency, but also ensures the structural stability of the cross beam 400 in different length states, so that the device can accurately adapt to various bridge construction scenes and meet diversified construction requirements.

[0064] In some embodiments, the length direction of the vertical frame 500 is vertically arranged. The vertical frame 500 is slidably connected to the telescopic beam 402 along the length direction of the vertical frame 500.

[0065] In some embodiments, the first lifting mechanism includes a winch 600, and the winch 600 is provided with a cable 601 wound thereon, and the end of the cable 601 is connected to the working platform 120. The winch 600 is simple to operate, and can stably and accurately control the lifting of the working platform 120 on the vertical frame 500 by controlling the winding and unwinding of the cable 601, so as to facilitate the operator to quickly adjust the position of the working platform 120 according to the construction height requirement and improve the construction efficiency.

[0066] Further, the winch 600 can be arranged above the support 100 or above the cross beam 400.

[0067] Further, the sling is wound around the top end of the vertical frame 500 and connected to the working platform 120. In this way, the vertical direction pulling force can be provided for the working platform 120, that is, the pulling force is the same as the sliding direction of the working platform 120 on the vertical frame 500.

[0068] In some embodiments, the telescopic beam 402 is provided with a guide roller for turning the cable 601.

[0069] In some embodiments, the second lifting mechanism comprises a motor 700, a gear 800 and a rack 900, the motor 700 is arranged on the cross beam 400. The gear 800 is arranged on the output shaft of the motor 700. The rack 900 is arranged on the vertical frame 500, and the rack 900 is engaged with the gear 800. The gear 800 is driven to rotate by the motor 700, so as to drive the rack 900 to move, and the vertical frame 500 and the working platform 120 as a whole move up and down. This driving mode has high transmission efficiency and can provide stable and large driving force, so that the vertical frame 500 and the working platform 120 as a whole move stably, can adapt to different weights of construction equipment and materials placed on the working platform 120 for construction, and improves the reliability and carrying capacity of the construction device.

[0070] Further, the motor 700 is arranged on the telescopic beam 402.

[0071] In some embodiments, the top of the vertical frame 500 is provided with a limiting disc 110, and the limiting disc 110 is used to contact the upper surface of the cross beam 400. When the vertical frame 500 is lowered to the limit position, the limiting disc 110 can contact the upper surface of the cross beam 400, which plays a safe limiting role, effectively avoids the vertical frame 500 from being separated from the cross beam 400 due to operation errors and the like, and protects the safety of construction personnel and equipment.

[0072] In some embodiments, the end of the telescopic beam 402 is provided with a sleeve, and the vertical frame 500 comprises two vertical rods which slide in the sleeve. In this way, the vertical frame 500 slides, and when the vertical frame 500 is disconnected from the cross beam 400, the lower surface of the limiting disc 110 contacts the upper surface of the sleeve, thereby avoiding the vertical frame 500 from being separated from the cross beam 400.

[0073] In some embodiments, the upper surface of the working platform 120 is provided with a guardrail 130 around the upper surface, and the height of the guardrail 130 is not less than 0.5 meters. The guardrail 130 provides protection for the construction personnel working on the working platform 120, prevents the construction personnel from falling from the working platform 120 by accident during the work process, and greatly improves the safety of the construction personnel during work.

[0074] In some embodiments, the walking mechanism 200 comprises wheels and a track, and the track is used to be fixed on the upper surface of the bridge, and the wheels roll in the track. The walking mechanism 200 adopts the cooperation of the wheels and the track, the track is fixed on the upper surface of the bridge, and the wheels roll in the track. This structure makes the device move more stably on the bridge, and the track guides the wheels, which can ensure that the device moves along the predetermined direction, improves the accuracy and stability of the movement of the device, and facilitates the construction operation at a specific position of the bridge.

[0075] In some embodiments, the parking mechanism comprises a plurality of hydraulic cylinders 300, and output shafts of the hydraulic cylinders 300 are used to abut the upper surface of the bridge. The output shafts of the hydraulic cylinders 300 abut the upper surface of the bridge, and the device can be firmly fixed on the bridge by adjusting the extension and retraction of the hydraulic cylinders 300, so that various external forces generated during the construction process can be effectively resisted, and the device can maintain a stable position during the construction process, thereby avoiding the influence of the movement of the device on the construction quality and safety.

[0076] Further, the cylinder body of the hydraulic cylinder 300 is fixed to the support 100, the output shaft of the hydraulic cylinder 300 is arranged downward, and the output shaft of the hydraulic cylinder 300 can be connected with a support plate. When the hydraulic cylinder 300 is started, the output shaft pushes downward, and the support plate contacts the ground, so as to realize the support of the support 100.

[0077] Through the description of the plurality of embodiments of the bridge outer side movable construction device of the utility model, it can be seen that the bridge outer side movable construction device embodiments of the utility model have at least one or more of the following advantages:

[0078] 1. The working platform 120 is arranged at the bottom end of the vertical frame 500 and is in sliding connection with the vertical frame 500, and the working platform 120 can be controlled to move on the vertical frame 500 in combination with the first lifting mechanism, so as to meet the construction operation requirements of different heights and provide a flexible and movable construction device for the bridge outer side construction.

[0079] 2. The second lifting mechanism is added, so that the vertical frame 500 and the working platform 120 as a whole can move up and down, which greatly expands the working range of the construction device in the vertical direction compared with the working platform 120 moving on the vertical frame 500, can adapt to more complex bridge outer side construction scenes, and improves the applicability and flexibility of the device. Moreover, when the first lifting mechanism is damaged, the working platform 120 can be raised by the second lifting mechanism to enable the workers to reach the safety area, thereby improving the safety.

[0080] Finally, it should be noted that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to.

[0081] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the utility model can be modified or some technical features can be replaced by equivalents without departing from the spirit of the utility model technical solutions, and all of them should be covered in the technical solution range of the utility model claimed.

Claims

1. A movable construction device for the outer side of a bridge, characterized in that, include: support; A walking mechanism is provided at the bottom of the support frame; A parking mechanism is provided on the support frame and is used to fix the relative position between the movable construction device and the bridge. A crossbeam is disposed on one side of the support and connected to the support; the crossbeam is a telescopic rod, which includes a sleeve beam and a telescopic beam; the telescopic beam slides within the sleeve beam. A vertical frame is disposed at one end of the horizontal beam and is slidably connected to the end of the horizontal beam away from the support. A working platform is disposed at the bottom end of the vertical frame and close to the support; the working platform is slidably connected to the vertical frame; A first lifting mechanism is used to control the movement of the work platform on the vertical frame.

2. The movable construction device for the outer side of a bridge according to claim 1, characterized in that, It also includes a second lifting mechanism, which is used to control the vertical movement of the vertical frame and the work platform as a whole.

3. The movable construction device for the outer side of a bridge according to claim 2, characterized in that, The sleeve beam is connected to the bracket; the telescopic beam is connected to the vertical frame.

4. The movable construction device for the outer side of a bridge according to claim 3, characterized in that, A pin passes through the sleeve beam, and multiple pin holes for inserting the pin are provided along the length of the telescopic beam.

5. The movable construction device for the outer side of a bridge according to claim 4, characterized in that, The first lifting mechanism includes: A winch, on which a cable is wound, the end of which is connected to the working platform.

6. The movable construction device for the outer side of a bridge according to claim 5, characterized in that, The second lifting mechanism includes: An electric motor, which is mounted on the crossbeam; Gear, the gear being disposed on the output shaft of the motor; A rack is disposed on the vertical frame and meshes with the gear.

7. The movable construction device for the outer side of a bridge according to claim 6, characterized in that, The top of the vertical frame is provided with a limiting plate, which is used to contact the upper surface of the crossbeam.

8. The movable construction device for the outer side of a bridge according to claim 1, characterized in that, The upper surface of the work platform is surrounded by a guardrail, the height of which is not less than 0.5 meters.

9. The movable construction device for the outer side of a bridge according to claim 1, characterized in that, The walking mechanism includes wheels and a track, the track being fixed to the upper surface of the bridge, and the wheels rolling within the track.

10. The movable construction device for the outer side of a bridge according to claim 1, characterized in that, The parking mechanism includes multiple hydraulic cylinders, the output shafts of which are used to abut against the upper surface of the bridge.

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