Walking mechanism, steel box girder tractor trolley and material conveying system

Abstract

The utility model relates to the field of bridge construction technology, more particularly to a walking mechanism, steel box girder tractor trolley and material conveying system. Walking mechanism includes walking subassembly and track, and walking subassembly is reciprocatingly moved on the track, walking subassembly includes walking unit, steering unit and steering connecting unit, walking unit is connected with steering connecting unit, steering connecting unit is connected with steering unit, and walking unit is movably connected with the track, walking unit can rotate relative to steering connecting unit along the first rotation direction, steering unit can rotate relative to steering connecting unit along the second rotation direction, walking unit has first rotation trajectory line along the first rotation direction rotation, steering unit has second rotation trajectory line along the second rotation direction rotation, and the first rotation center axis of first rotation trajectory line is perpendicular to the second rotation center axis of second rotation trajectory line. In this way, the problem that the position of steel box girder changes on the bearing platform when dragging the steel box girder is solved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to a walking mechanism, a steel box girder trolley, and a material conveying system. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans and are called steel box girders because of their box-like shape. During construction, steel box girders are typically hoisted to the bridge supports in sections and then welded together, or the steel box girders are welded first and then hoisted to the bridge supports. With the rapid development of transportation networks, more and more bridges need to cross or pass under existing highways, railways, rivers, and other facilities, including many curved bridges. The jacking method or towing method is commonly used for the construction of steel box girders. For example, Chinese patent application "201410173429.0", entitled "A Rolling Dragging Device and its Construction Method", discloses that "the device includes a guide rail, a pulley, a wire rope, a first winch, a slide beam, a fixed pulley, a movable pulley, a second winch, and a control device. The first winch is installed at the traction endpoint. The first winch connects to the structure via the wire rope through the fixed and movable pulleys and pulls the structure into position. The control device includes a sensor and a control unit. The sensor is located at the endpoint in front of the fixed pulley to obtain distance data between the endpoint and the structure. The control unit determines the speed of the first winch based on the data detected by the sensor and controls the speed change of the first winch. The second winch changes speed synchronously. This invention uses the guide rail and pulley to drag the structure. The speed of the dragging process can be automatically controlled, the dragging process is smooth, and the impact on the structure is minimal." If the above-mentioned scheme is used to tow and pull steel box girders on curved bridges, the angle between the steel box girder and the steel wire rope will change during the towing process. The existing towing and pulling steel box girder device cannot correct the angle between the steel box girder and the steel wire rope as the angle changes. This may cause the steel box girder to move relative to the platform supporting it when the direction of movement of the steel box girder changes due to inertia. This will cause instability of the steel box girder, affect the towing of the steel box girder, and bring safety risks. Moreover, the change in the displacement of the steel box girder will also affect the next steel box girder installation process, increasing the difficulty of the work. Utility Model Content

[0003] To address the problem of changes in the position of steel box girders on the load-bearing platform during existing towing operations, this utility model provides a walking mechanism, a steel box girder towing trolley, and a material conveying system.

[0004] According to one aspect of the present invention, a walking mechanism is provided, comprising: A walking assembly and a track, wherein the walking wheels are capable of reciprocating on the track; The walking assembly includes a walking unit, a steering unit, and a steering connection unit; The walking unit is connected to the steering connection unit, the steering connection unit is connected to the steering unit, and the walking unit is movably connected to the track; The walking unit can rotate relative to the steering connection unit along a first rotation direction, and during the rotation, the walking unit moves relative to the track along the direction in which the track extends. The steering unit can rotate relative to the steering connection unit along the second rotation direction; The walking unit rotates along a first rotation direction and has a first rotation trajectory line, and the steering unit rotates along a second rotation direction and has a second rotation trajectory line. The first rotation center axis of the first rotation trajectory line is perpendicular to the second rotation center axis of the second rotation trajectory line.

[0005] According to one embodiment of the present invention, the steering connection unit includes a first support shaft, a second support shaft, a first support frame, and a second support frame. Both ends of the first support shaft are connected to the first support frame. The first support frame is connected to the second support frame. The second support frame is connected to one end of the second support shaft. The first central axis of the first support shaft is perpendicular to the second central axis of the second support shaft. The walking unit is sleeved on the outer periphery of the first support shaft, and the walking unit can rotate relative to the first support shaft. The steering unit is sleeved on the outer periphery of the second support shaft, and the steering unit can rotate relative to the second support shaft.

[0006] According to one embodiment of the present invention, the walking unit includes a walking wheel, a first bearing, and a first axle cover; The first bearing is sleeved on the outer periphery of the first support shaft, the traveling wheel is sleeved on the outer periphery of the first bearing, the first shaft cover is sleeved on the outer periphery of both ends of the first support shaft, the first shaft cover is connected to the traveling wheel, and the first shaft cover at least partially abuts against the first bearing. When the traveling wheel moves on the track, the traveling wheel drives the first bearing to rotate relative to the first support shaft.

[0007] According to one embodiment of the present invention, the first support shaft is sleeved with at least two first bearings, the two first bearings being far apart from each other, and the two first bearings, the first shaft cover, the first support shaft and the traveling wheel forming a first lubricating oil cavity.

[0008] According to one embodiment of the present invention, the first support shaft is provided with a first lubricating oil channel, the oil inlet of the first lubricating oil channel is located at one end of the first support shaft, and the oil outlet of the first lubricating oil channel is connected to the lubricating oil cavity.

[0009] According to one embodiment of the present invention, the two ends of the walking wheel are provided with a first protrusion away from the third central axis of the walking wheel, so that the walking wheel has an I-shaped structure, and the first protrusion abuts against the side of the track to form a state in which the walking wheel is engaged with the track.

[0010] According to one embodiment of the present invention, the walking unit has at least two units, the number of the first support shafts is adapted to the number of the walking units, and each walking unit is sleeved on one of the first support shafts.

[0011] According to one embodiment of the present invention, a second boss is provided in the middle of the second support shaft; The steering unit includes a steering sleeve, a second bearing, a third bearing, and a second axle cover; The second bearing is sleeved on the outer periphery of the first end of the second support shaft and abuts against the second support frame. The third bearing is sleeved on the outer periphery of the second end of the second support shaft and abuts against the side of the second boss. The steering sleeve is sleeved on the outer periphery of the second bearing and the third bearing. The second shaft cover is sleeved on the outer periphery of the second support shaft and is connected to the steering sleeve. The second shaft cover at least partially abuts against the third bearing. When the steering sleeve rotates, the steering sleeve drives the second bearing and the third bearing to rotate relative to the second support shaft.

[0012] According to one embodiment of the present invention, the steering sleeve, the second support shaft, the second bearing, the third bearing, and the second shaft cover form a second lubricating oil cavity.

[0013] According to a second aspect of this utility model, a steel box girder trolley is provided, comprising: As described above, the traveling mechanism and the installation platform are connected to the steering unit in the traveling mechanism, and the installation platform carries the steel box girder.

[0014] According to a third aspect of the present invention, the present invention provides a material conveying system, including the aforementioned steel box girder trolley and a winch, wherein the winch is connected to the mounting platform in the steel box girder trolley via a traction cable, and the winch is located in front of the steel box girder trolley in the direction of travel.

[0015] To address the problem of shifting position of steel box girders on the load-bearing platform during existing towing operations, this utility model offers the following advantages: This utility model's traveling unit is connected to the steering unit via a steering connection unit. This allows the traveling unit to move along the guide rail by rotation, while simultaneously driving the steering unit forward. The rotation of the traveling unit does not affect the rotation of the steering unit. The steering unit and traveling unit are two independently rotating structures. The steering unit connects to the platform carrying the material, and during material transport, adjusting the steering unit allows for adjustment of the platform's orientation. This enables the material and platform to move according to changes in the bridge's curvature, ensuring that the material's position remains unaffected by inertia during transport. Attached Figure Description

[0016] Figure 1 A schematic diagram of a walking mechanism is shown; Figure 2 A structural schematic diagram of a steel box girder trolley is shown; Figure 3 A top view of the mounting platform is shown. Figure 4 A schematic diagram of a material conveying system is shown.

[0017] Reference numerals: 01-Traveling mechanism; 11-Railway; 12-Traveling assembly; 121-Traveling unit; 1211-Traveling wheel; 1212-First bearing; 1213-First shaft cover; 1214-First boss; 1215-Third boss; 1216-First lubricating oil cavity; 1217-First bushing; 1218-Second lubricating oil channel; 1219-Second bushing; 122-Steering unit; 1221-Steering sleeve; 1222-Second bearing; 1223-Third bearing; 1224-Second shaft 1225 - Fourth boss; 1226 - Third bushing; 1227 - Second lubricating oil cavity; 1228 - Support pad; 123 - Steering connection unit; 1231 - First support shaft; 1232 - Second support shaft; 1233 - Second boss; 1234 - First support frame; 1235 - Second support frame; 1236 - First lubricating oil channel; 1237 - Third lubricating oil channel; 02 - Steel box girder trolley; 21 - Installation platform; 03 - Material conveying system; 31 - Winch; 32 - Traction cable. Detailed Implementation

[0018] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0019] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0020] According to a first aspect of this utility model, this embodiment discloses a walking mechanism, such as... Figure 1 As shown, the walking mechanism 01 includes: The walking assembly 12 and the track 11, wherein the walking wheel 1211 can reciprocate on the track 11; The walking assembly 12 includes a walking unit 121, a steering unit 122, and a steering connection unit 123; The walking unit 121 is connected to the steering connection unit 123, the steering connection unit 123 is connected to the steering unit 122, and the walking unit 121 is movably connected to the track 11; The walking unit 121 can rotate relative to the steering connection unit 123 along the first rotation direction. During the rotation, the walking unit 121 moves relative to the track 11 along the direction in which the track 11 extends. The steering unit 122 can rotate relative to the steering connection unit 123 along the second rotation direction; The walking unit 121 rotates along a first rotation direction and has a first rotation trajectory line, and the steering unit 122 rotates along a second rotation direction and has a second rotation trajectory line. The first rotation center axis of the first rotation trajectory line is perpendicular to the second rotation center axis of the second rotation trajectory line.

[0021] In this embodiment, as Figure 1 As shown, the traveling unit 121 is in direct contact with the track 11. The traveling unit 121 moves along the track 11 in cooperation with it. The traveling unit 121 moves on the track 11 by rotation, ensuring smooth movement when carrying heavy materials. The traveling unit 121 is connected to the steering unit 122 via a steering connection unit 123. When the traveling unit 121 moves on the guide rail by rotation, it drives the steering unit 122 forward, and the rotation of the traveling unit 121 does not affect the rotation of the steering unit 122. The steering unit 122 and the traveling unit 121 are two independently rotating structures. The steering unit 122 connects to the platform carrying the material, and during material transportation, adjusting the steering unit 122 adjusts the direction of the platform carrying the material, allowing the material and the platform to move with changes in the curvature of the bridge, ensuring that the position of the material does not change due to inertia during transportation. By setting the first rotation center axis of the first rotation trajectory line perpendicular to the second rotation center axis of the second rotation trajectory line, the steering unit 122 can easily move relative to the walking unit 121 when carrying materials with a large weight.

[0022] According to one embodiment of the present invention, such as Figure 1 As shown, the steering connection unit 123 includes a first support shaft 1231, a second support shaft 1232, a first support frame 1234, and a second support frame 1235. Both ends of the first support shaft 1231 are connected to the first support frame 1234. The first support frame 1234 is connected to the second support frame 1235. The second support frame 1235 is connected to one end of the second support shaft 1232. The first central axis of the first support shaft 1231 is perpendicular to the second central axis of the second support shaft 1232. The walking unit 121 is sleeved on the outer periphery of the first support shaft 1231, and the walking unit 121 can rotate relative to the first support shaft 1231. The steering unit 122 is sleeved on the outer periphery of the second support shaft 1232, and the steering unit 122 can rotate relative to the second support shaft 1232.

[0023] In this embodiment, the arrangement of the first support shaft 1231 and the second support shaft 1232 ensures that the walking unit 121 drives the rotating unit to move during rotation and movement, preventing the steering unit 122 and the walking unit 121 from interfering with each other during their respective rotations. The arrangement of the first support frame 1234 and the second support frame 1235 connects the first support shaft 1231 and the second support shaft 1232, such that the first central axis of the first support shaft 1231 is perpendicular to the second central axis of the second support shaft 1232. This achieves that the first rotation center axis of the first rotation trajectory line of the walking unit 121 is perpendicular to the second rotation center axis of the second rotation trajectory line of the steering unit 122, thereby making it easier for the steering unit 122 to move relative to the walking unit 121.

[0024] According to one embodiment of the present invention, such as Figure 1 As shown, the walking unit 121 includes a walking wheel 1211, a first bearing 1212, and a first axle cover 1213; The first bearing 1212 is sleeved on the outer periphery of the first support shaft 1231, the traveling wheel 1211 is sleeved on the outer periphery of the first bearing 1212, and the first shaft cover 1213 is sleeved on the outer periphery of both ends of the first support shaft 1231. The first shaft cover 1213 is connected to the traveling wheel 1211, and the first shaft cover 1213 at least partially abuts against the first bearing 1212. When the traveling wheel 1211 moves on the track 11, the traveling wheel 1211 drives the first bearing 1212 to rotate relative to the first support shaft 1231.

[0025] In this embodiment, the connection method and position setting between the traveling wheel 1211, the first bearing 1212, and the first bearing cover 1213 enable the traveling wheel 1211 to drive the first bearing 1212 to move on the track 11 by rotation during the movement of the traveling wheel 1211 along the track 11. The first bearing cover 1212 is connected to the traveling wheel 1211. Specifically, the first bearing cover 1212 is detachably connected to the traveling wheel 1211, and the first bearing cover 1212 is at least partially in contact with the first bearing 1212 to prevent the first bearing 1212 from detaching from the interior of the traveling wheel 1211, thereby further increasing the positional stability of the first bearing 1212.

[0026] In some embodiments, the walking unit 121 further includes a driver, the output of which is connected to the walking wheel 1211. The driver can drive the walking wheel 1211 to move, so that when the walking wheel 1211 encounters difficulty in moving forward while being dragged, the driver can provide driving force to the walking wheel 1211 to promote the walking wheel 1211 to move forward.

[0027] Preferably, the driver includes a motor.

[0028] According to one embodiment of the present invention, such as Figure 1 As shown, the first support shaft 1231 is fitted with at least two first bearings 1212, which are far apart from each other. The two first bearings 1212, the first shaft cover 1213, the first support shaft 1231 and the traveling wheel 1211 form a first lubricating oil cavity 1216.

[0029] In this embodiment, by arranging at least two first bearings 1212 far apart from each other, the traveling wheel 1211 can easily drive the first bearings 1212 to rotate, while the two first bearings 1212 can provide stable support for the first support shaft 1231. The arrangement of the two first bearings 1212, the first shaft cover 1213, the first support shaft 1231, and the traveling wheel 1211 to form a lubricating oil cavity ensures sufficient space for storing lubricating oil, thereby providing lubrication for the first bearings 1212, enabling normal use of the first bearings 1212, and avoiding frequent replenishment of lubricating oil to the first bearings 1212.

[0030] In some embodiments, a third boss 1215 is provided inside the middle part of the walking wheel 1211. There is a first gap between the third boss 1215 and the first support shaft 1231. One side of the first bearing 1212 abuts against the side of the third boss 1215, and the other side of the first bearing 1212 abuts against the first support shaft 1231. Through this connection method, the walking wheel 1211 is restricted from moving axially, thereby improving the stability of the structure.

[0031] In some embodiments, the walking unit 121 further includes a first bushing 1217 and a second bushing 1219. The first bushing 1217 is sleeved on the outer periphery of the first support shaft 1231, positioned between two adjacent first bearings 1212, and abuts against a portion of the first bearings 1212. The second bushing 1219 is sleeved on the outer periphery of both ends of the first support shaft 1231, and abuts against a portion of the first bearings 1212. A first shaft cover 1213 is sleeved on the outer periphery of the second bushing 1219, i.e., the first shaft cover 1213 contacts the first support shaft 1231. The arrangement of the first bushing 1217 and the second bushing 1219 further increases the stability of the position of the first bearings 1212.

[0032] According to one embodiment of the present invention, such as Figure 1 As shown, the first support shaft 1231 is provided with a first lubricating oil channel 1236. The oil inlet of the first lubricating oil channel 1236 is located at one end of the first support shaft 1231, and the oil outlet of the first lubricating oil channel 1236 is connected to the first lubricating oil cavity 1216.

[0033] In this embodiment, the first lubricating oil channel 1236 is provided to facilitate the supply of oil to the first lubricating oil cavity 1216.

[0034] In some embodiments, the oil inlet of the first lubricating oil channel 1236 is provided with an oil plug to prevent the external environment from affecting the quality of the lubricating oil in the lubricating oil cavity, and at the same time to prevent the lubricating oil in the lubricating oil channel from overflowing.

[0035] In some embodiments, the first bushing 1217 is provided with a second lubricating oil channel 1218, the oil outlet of the first lubricating oil channel 1236 corresponds to the oil inlet of the second lubricating oil channel 1218, and the oil outlet of the second lubricating oil channel 1218 is connected to the first lubricating oil cavity 1216, so that the first bushing 1217 can ensure structural stability without affecting the entry of lubricating oil into the first lubricating oil cavity 1216.

[0036] According to one embodiment of the present invention, such as Figure 1 As shown, the two ends of the traveling wheel 1211 are provided with a first boss 1214 away from the third central axis of the traveling wheel 1211, so that the traveling wheel 1211 has an I-shaped structure. The first boss 1214 abuts against the side of the track 11 to form a state in which the traveling wheel 1211 and the track 11 are engaged.

[0037] In this embodiment, by providing first protrusions 1214 at both ends of the walking wheel 1211, the walking wheel 1211 is prevented from deviating from the track 11 during the sliding process, ensuring that the walking wheel 1211 only moves on the track 11.

[0038] According to one embodiment of the present invention, such as Figure 1 As shown, the walking unit 121 has at least two units, and the number of the first support shafts 1231 is adapted to the number of the walking units 121. Each walking unit 121 is fitted onto one of the first support shafts 1231.

[0039] In this embodiment, by having at least two walking units 121, the walking mechanism 01 is provided with more stable movement capability, while the support performance provided to the first support shaft 1231 is improved.

[0040] According to one embodiment of the present invention, such as Figure 1As shown, a second boss 1233 is provided in the middle of the second support shaft 1232; The steering unit 122 includes a steering sleeve 1221, a second bearing 1222, a third bearing 1223, and a second axle cover 1224; The second bearing 1222 is sleeved on the outer periphery of the first end of the second support shaft 1232 and abuts against the second support frame 1235. The third bearing 1223 is sleeved on the outer periphery of the second end of the second support shaft 1232 and abuts against the side of the second boss 1233. The steering sleeve 1221 is sleeved on the outer periphery of the second bearing 1222 and the third bearing 1223. The second shaft cover 1224 is sleeved on the outer periphery of the second support shaft 1232 and is connected to the steering sleeve 1221. The second shaft cover 1224 at least partially abuts against the third bearing 1223. When the steering sleeve 1221 rotates, it drives the second bearing 1222 and the third bearing 1223 to rotate relative to the second support shaft 1232.

[0041] In this embodiment, the third boss 1215 in the middle of the second support shaft 1232 limits the position of the third bearing 1223. The second shaft cover 1224 at least partially abuts against the third bearing 1223, further limiting the position of the third bearing 1223 and ensuring the stability of the structure. The second bearing 1222 facilitates the movement of the steering sleeve 1221 relative to the second support shaft 1232, and at the same time, the second bearing 1222 provides support for the steering sleeve 1221. The steering sleeve 1221 is connected to an external structure, that is, the steering sleeve 1221 is connected to the structure supporting the material as a connector, so that the material can be transported by the walking unit 121, and the steering unit 122 can axially rotate the structure transporting the material.

[0042] In some embodiments, the steering unit 122 further includes a third bushing 1226, which is sleeved on the outer periphery of the first end of the second support shaft 1232. A second bushing cover 1224 is sleeved on the outer periphery of the third bushing 1226, and the second bushing cover 1224 abuts against a portion of the third bearing 1223. The provision of the third bushing 1226 further improves structural stability.

[0043] In some embodiments, a support pad 1228 is provided between the second bearing 1222 and the second support frame 1235 to increase structural reliability.

[0044] In some embodiments, the driver is mounted on the side of the second support frame 1235.

[0045] According to one embodiment of the present invention, such as Figure 1As shown, the steering sleeve 1221, the second support shaft 1232, the second bearing 1222, the third bearing 1223 and the second shaft cover 1224 form a second lubricating oil cavity 1227.

[0046] In this embodiment, the second lubricating oil cavity 1227 can store lubricating oil, which facilitates the supply of lubricating oil to the first bearing 1212 and the second bearing 1222.

[0047] In some embodiments, the second support shaft 1232 is provided with a third lubricating oil channel 1237. The oil inlet of the third lubricating oil channel 1237 is located at one end of the second support shaft 1232 away from the walking unit 121, and the oil outlet of the third lubricating oil channel 1237 is connected to the second lubricating oil cavity 1227, so that lubricating oil can be replenished to the second lubricating oil cavity 1227 through the second lubricating oil.

[0048] In some embodiments, a fourth boss 1225 is provided inside the middle of the steering sleeve 1221. The second bearing 1222 abuts against the side of the fourth boss 1225 to form a snap-fit ​​state between the first bearing 1212 and the steering sleeve 1221. The other side of the fourth boss 1225 is used to support the third bearing 1223, that is, the third boss 1215 and the fourth boss 1225 jointly support the third bearing 1223. There is a third gap between the fourth boss 1225 and the second support shaft 1232, so that the steering sleeve 1221 does not contact the second support shaft 1232, avoiding direct contact between the two, increasing the frictional force generated by relative rotation, and the third gap also facilitates the formation of the second lubricating oil cavity 1227.

[0049] According to a second aspect of this utility model, this utility model provides a steel box girder tractor, such as... Figure 3 and Figure 4 As shown, the steel box girder trolley 02 includes: As described above, the walking mechanism 01 and the installation platform 21 are connected to the steering unit 122 in the walking mechanism 01, and the installation platform 21 carries the steel box girder.

[0050] In this embodiment, the installation platform 21 has a platform for supporting the steel box girder and a connection part connected to the steering unit 122, so as to realize the transportation of the steel box girder by the steel box girder trolley 02.

[0051] Specifically, each track 11 has two walking components 12. During operation, with two tracks 11, four walking components 12 are connected to the mounting platform 21. That is, one walking component 12 is connected to each of the four sides of the bottom of the mounting platform 21, thereby improving the stability of the connection between the walking mechanism 01 and the mounting platform 21 and enabling the walking mechanism 01 to provide reliable support to the mounting platform 21.

[0052] According to a third aspect of this utility model, this utility model provides a material conveying system, such as... Figure 4 As shown, the material conveying system 03 includes the aforementioned steel box girder trolley 02 and winch 31. The winch 31 is connected to the mounting platform 21 in the steel box girder trolley 02 via a traction cable 32. The winch 31 is located in front of the steel box girder trolley 02 in the direction of travel.

[0053] In this embodiment, the winch 31 is used to drive the steel box girder trolley 02. Specifically, the reciprocating movement of the steel box girder trolley 02 is achieved by the winch 31 positioned in front of the steel box girder trolley 02 in the direction of its reciprocating movement. For example, when the steel box girder trolley 02 moves forward, it is pulled by the winch 31 in front of it; when the steel box girder trolley 02 moves backward, it is pulled by the winch 31 behind it.

[0054] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A walking mechanism, characterized in that, include: Walking components and tracks; The walking component can reciprocate on the track; The walking assembly includes a walking unit, a steering unit, and a steering connection unit; The walking unit is connected to the steering connection unit, the steering connection unit is connected to the steering unit, and the walking unit is movably connected to the track; The walking unit can rotate relative to the steering connection unit along a first rotation direction, and during the rotation, the walking unit moves relative to the track along the direction in which the track extends. The steering unit can rotate relative to the steering connection unit along the second rotation direction; The walking unit rotates along a first rotation direction and has a first rotation trajectory line, and the steering unit rotates along a second rotation direction and has a second rotation trajectory line. The first rotation center axis of the first rotation trajectory line is perpendicular to the second rotation center axis of the second rotation trajectory line.

2. The walking mechanism according to claim 1, characterized in that, The steering connection unit includes a first support shaft, a second support shaft, a first support frame, and a second support frame. Both ends of the first support shaft are connected to the first support frame. The first support frame is connected to the second support frame. The second support frame is connected to one end of the second support shaft. The first central axis of the first support shaft is perpendicular to the second central axis of the second support shaft. The walking unit is sleeved on the outer periphery of the first support shaft, and the walking unit can rotate relative to the first support shaft. The steering unit is sleeved on the outer periphery of the second support shaft, and the steering unit can rotate relative to the second support shaft.

3. A walking mechanism according to claim 2, characterized in that, The walking unit includes a walking wheel, a first bearing, and a first axle cover; The first bearing is sleeved on the outer periphery of the first support shaft, the traveling wheel is sleeved on the outer periphery of the first bearing, the first shaft cover is sleeved on the outer periphery of both ends of the first support shaft, the first shaft cover is connected to the traveling wheel, and the first shaft cover at least partially abuts against the first bearing. When the traveling wheel moves on the track, the traveling wheel drives the first bearing to rotate relative to the first support shaft.

4. A walking mechanism according to claim 3, characterized in that, The first support shaft is fitted with at least two first bearings, which are far apart from each other. The two first bearings, the first shaft cover, the first support shaft and the traveling wheel form a first lubricating oil cavity.

5. A walking mechanism according to claim 4, characterized in that, The first support shaft is provided with a first lubricating oil channel. The oil inlet of the first lubricating oil channel is located at one end of the first support shaft, and the oil outlet of the first lubricating oil channel is connected to the first lubricating oil cavity.

6. A walking mechanism according to claim 3, characterized in that, The two ends of the traveling wheel are provided with a first protrusion away from the third central axis of the traveling wheel, so that the traveling wheel has an I-shaped structure. The first protrusion abuts against the side of the track to form a state in which the traveling wheel is engaged with the track.

7. A walking mechanism according to claim 2, characterized in that, The walking unit has at least two units, and the number of the first support shafts is adapted to the number of the walking units, with each walking unit being fitted onto one of the first support shafts.

8. A walking mechanism according to claim 2, characterized in that, The second support shaft has a second boss in the middle; The steering unit includes a steering sleeve, a second bearing, a third bearing, and a second axle cover; The second bearing is sleeved on the outer periphery of the first end of the second support shaft and abuts against the second support frame. The third bearing is sleeved on the outer periphery of the second end of the second support shaft and abuts against the side of the second boss. The steering sleeve is sleeved on the outer periphery of the second bearing and the third bearing. The second shaft cover is sleeved on the outer periphery of the second support shaft and is connected to the steering sleeve. The second shaft cover at least partially abuts against the third bearing. When the steering sleeve rotates, the steering sleeve drives the second bearing and the third bearing to rotate relative to the second support shaft.

9. A walking mechanism according to claim 8, characterized in that, The steering sleeve, the second support shaft, the second bearing, the third bearing, and the second shaft cover form a second lubricating oil cavity.

10. A steel box girder tractor, characterized in that, include: The traveling mechanism and installation platform as described in any one of claims 1-9, wherein the installation platform is connected to the steering unit in the traveling mechanism, and the installation platform carries the steel box girder.

11. A material conveying system, characterized in that, Includes the steel box girder trolley and winch as described in claim 10, wherein the winch is connected to the steel box girder trolley via a traction cable, and the winch is located in front of the steel box girder trolley in the direction of travel.

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