阅读说明：本技术 一种受限空间内搬运长条轨道的方法 (Method for carrying long-strip track in limited space ) 是由 吉智勇 谢作华 毛勇 黄少奇 于 2020-06-20 设计创作，主要内容包括：本发明涉及一种受限空间内搬运长条轨道的方法,包括长条形的横梁和连接在横梁上的行走轮组,还包括固定吊钩组件和滑动吊钩组件,所述固定吊钩组件和滑动吊钩组件分别连接在横梁的两个端部；通过固定吊钩组件和滑动吊钩组件将长条轨道固定在横梁的下部；通过行走轮组转动带动横梁和长条轨道在受限空间内行走。本发明的方法,实现将长条轨道在受限空间内进行转运至指定的安装位置,在保证安全的同时,降低生产成本,提高工作效率,确保安装进度。并且,该方法降低了吊装难度与安全风险,吊装成本及耗时明显减少,吊装及运输工作效率至少提高5倍以上,对类似机房长距离吊车轨道吊运有着重要的借鉴意义。(The invention relates to a method for carrying a long track in a limited space, which comprises a long beam, a traveling wheel set connected to the beam, a fixed hook assembly and a sliding hook assembly, wherein the fixed hook assembly and the sliding hook assembly are respectively connected to two ends of the beam; fixing the long-strip track at the lower part of the cross beam through the fixed hook component and the sliding hook component; the walking wheel set rotates to drive the cross beam and the long-strip track to walk in the limited space. The method realizes the transfer of the long-strip track to the appointed installation position in the limited space, reduces the production cost, improves the working efficiency and ensures the installation progress while ensuring the safety. In addition, the method reduces the hoisting difficulty and safety risk, obviously reduces the hoisting cost and time consumption, improves the hoisting and transportation work efficiency by at least 5 times, and has important reference significance for hoisting similar machine room long-distance crane rails.)

1. A method of handling elongate rails in a confined space, comprising: the device comprises a device for carrying a long track in a limited space, a fixed lifting hook assembly and a sliding lifting hook assembly, wherein the device comprises a long beam and a travelling wheel set connected to the beam, and the fixed lifting hook assembly and the sliding lifting hook assembly are respectively connected to two ends of the beam; which comprises the following steps:

(1) pushing a device for transporting the long-strip track in the limited space to be above the long-strip track to be transported and to be positioned in the middle of the long-strip track;

(2) pressing down a cross beam with one end of a fixed lifting hook component, and clamping the fixed lifting hook component on the waist parts at two sides of one side of the long-strip track;

(3) clamping the sliding hook components at the other end of the cross beam at the waist parts at two sides of the other side of the long strip track;

(4) lifting the long rail by the sliding hook assembly, wherein the lifting height is controlled to be about 5-10 cm above the ground;

(5) the walking wheel set rotates under the action of force to drive the cross beam and the long track to move in a limited space and walk to a specified installation position;

(6) after the side, connected with the long-strip track, of the sliding hook component is lowered to the ground, the sliding hook component is separated from the long-strip track;

(7) under the action of gravity of the rail, the long rail on one side connected with the fixed lifting hook assembly descends to the ground, and the fixed lifting hook assembly is separated from the long rail;

(8) the walking wheel set is driven to rotate under the action of force, so that the cross beam is driven to move in a limited space and leave an appointed installation position;

(9) and (5) repeating the steps (1) to (8) to carry out the transportation of the next long track.

2. The method of claim 1, wherein the method further comprises: the walking wheel set comprises two walking wheels; the two walking wheels are symmetrically fixed on two sides of the beam through a connecting shaft, and the walking wheels are locked on the connecting shaft through cotter pins.

3. The method of claim 1, wherein the method further comprises: the fixed hook component comprises a lifting lug plate, a fixed lifting hook nut and a fixed lifting hook bolt; the two lifting lug plates are fixedly connected to the bottom of one end of the cross beam; the fixed hook is locked between the two lug plates by a fixed hook bolt and a fixed hook nut.

4. A method of handling elongated rails within a confined space as claimed in claim 3 wherein: and (2) pressing down a cross beam with one end of the fixed hook component, rotating the fixed hook left and right to clamp the waist parts on the two sides of the long strip track, and fixing the fixed hook and the lifting lug plate by using a fixed hook bolt and a fixed hook nut.

5. A method of handling elongated rails within a confined space as claimed in claim 3 wherein: and (7) under the action of gravity of the rail, the long rail on one side connected with the fixed hook assembly descends to the ground, the fixed hook bolt and the fixed hook nut are loosened to enable the fixed hook to be separated from the waist parts on two sides of the long rail after the fixed hook bolt and the fixed hook nut are loosened to enable the fixed hook to be loosened from the lifting lug plate in a left-right rotating mode.

6. The method of claim 1, wherein the method further comprises: the sliding hook assembly comprises a guide bolt and a guide nut which are positioned at the other end of the cross beam, a steel wire rope, a shackle and a sliding hook; one end of the steel wire rope is connected with the shackle and then is lapped on the guide bolt and steered through the guide bolt; the sliding hook is connected with the shackle; the steel wire rope pulling device is characterized by further comprising a connecting rod and a chain block, wherein the connecting rod and the chain block are fixed on the cross beam, and the chain block is connected with the other end of the steel wire rope and is fixedly connected with the connecting rod.

7. The method of claim 6, wherein the method further comprises: and (3) loosening the chain block at the other end of the cross beam to enable the steel wire rope, the shackle and the sliding lifting hook to be in a loose state, and rotating the sliding lifting hook left and right to clamp and buckle the waist parts at two sides of the long-strip track.

8. The method of claim 6, wherein the method further comprises: in the step (4), the long-strip track is lifted by tensioning the chain block; in the step (6), the long-strip track on one side of the sliding lifting hook descends to the ground by loosening the chain block, and then the sliding lifting hook clamped on the long-strip track is loosened to separate the sliding lifting hook from the long-strip track.

9. The method of claim 1, wherein the method further comprises: armrests are respectively arranged on the side walls of the two ends of the cross beam; in the step (1), the step (5) and the step (8), the driving wheel set is rotated by applying force on the handrail.

10. The method of claim 1, wherein the method further comprises: the beam reinforcing assembly is also included; the beam reinforcing component comprises a lacing wire vertical plate and a lacing wire; the lacing wire vertical plate is positioned in the middle of the cross beam, the number of the lacing wires is two, one end of each lacing wire is connected with the top of the lacing wire vertical plate, and the other end of each lacing wire is connected with the position of two adjacent ends of the cross beam.

Technical Field

The invention belongs to the field of constructional engineering, relates to the carrying of a long track in a narrow and small limited space, and particularly relates to a device and a method for carrying the long track in the limited space.

Background

With the development of industrialization, cranes are uniformly arranged in more and more plants or machine rooms and are used for hoisting tasks such as production, operation maintenance, overhaul and the like. The crane rail is about ten meters in length and hundreds of meters in length according to the working area of the bridge crane, the rail must be lifted in place before the rail is installed, and the crane rail is generally lifted to the installation position one by adopting an automobile crane under the condition of site and space allowance.

In the actual installation process of the crane track, due to the restriction of progress and cross construction factors, when the field condition is adopted for hoisting by using a truck crane, the installation condition is generally not met. When the roof is installed, the roof in a factory building or a machine room is constructed, and the lifting operation of the automobile is limited.

After a roof in a factory building or a machine room is formed, the only existing method is to hoist a side door window hole or an outer wall opening hole of the machine room into the roof by parts, and a hoisting point is arranged in the machine room to be connected in the air. The machine room is hung from a door and window hole or an outer wall opening, so that the machine room structure is inevitably damaged, the later repair difficulty is high, and the attractiveness of the whole machine room structure is influenced; in addition, because the track is made of steel castings, welding of hoisting points is not allowed during hoisting, the track is generally bound and hoisted by steel wire ropes, and inclined hoisting exists during aerial access in a machine room, so that the track is easy to fall off during the process of accessing the machine room, and equipment and personal accidents are caused.

The method has the advantages of high difficulty, long time consumption, high cost and high safety risk, and is particularly remarkable for long-distance rail hoisting. The lifting device is particularly remarkable for long-distance rail lifting with limited lifting operation space, high machine room height and large longitudinal working range of a crane. For example, in the medium and large-sized avionic junction engineering, a drainage gate machine room is generally arranged, according to the arrangement requirement, the vertical height of the machine room (and a traffic bridge) is generally 20-30 meters, the length of the machine room (and the traffic bridge) is 200-500m, and the traffic bridge is the only place for the hoisting operation of automobiles. How to guarantee the safe hoisting of crane track, reduction in production cost improves work efficiency simultaneously, is one technological problem of putting in front.

Disclosure of Invention

In order to solve the technical problem, the invention provides a device and a method for conveying a long rail in a limited space. By the device and the method, the long-strip track is transported to the appointed installation position in the limited space, the safety is guaranteed, meanwhile, the production cost is reduced, the working efficiency is improved, and the installation progress is guaranteed.

The invention provides a device for carrying a long track in a limited space, which comprises a long-strip-shaped cross beam, a traveling wheel set connected to the cross beam, a fixed hook assembly and a sliding hook assembly, wherein the fixed hook assembly and the sliding hook assembly are respectively connected to two end parts of the cross beam; the fixed lifting hook assembly and the sliding lifting hook assembly fix the long-strip track at the lower part of the cross beam; the walking wheel set rotates to drive the cross beam and the long-strip track to walk in the limited space.

In some preferred embodiments, the set of road wheels comprises two road wheels; the two walking wheels are symmetrically fixed on two sides of the beam through the connecting shaft.

In some preferred embodiments, the bottom of the cross beam is provided with a seat plate, and the connecting shaft is locked on the seat plate through a U-shaped pipe clamp and a U-shaped pipe clamp nut.

In some preferred embodiments, the device further comprises a cotter pin, and the cotter pin locks the road wheel on the connecting shaft.

In some preferred embodiments, the running wheel sets are one or more sets.

In some preferred embodiments, the fixed hook assembly comprises a lug plate, a fixed hook nut, and a fixed hook bolt; the two lifting lug plates are fixedly connected to the bottom of one end of the cross beam; the fixed hook is locked between the two lug plates by a fixed hook bolt and a fixed hook nut.

In some preferred embodiments, the sliding hook assembly includes a guide bolt and a guide nut at the other end of the beam, as well as a wire rope, shackle and sliding hook; one end of the steel wire rope is connected with the shackle and then is lapped on the guide bolt and steered through the guide bolt; the sliding hook is connected with the shackle.

In some preferred embodiments, the sliding hook assembly further comprises a connecting rod fixed on the cross beam and a chain block connected to the other end of the steel wire rope and fixedly connected to the connecting rod.

In some preferred embodiments, the fixed hook assembly and the sliding hook assembly are one or more; wherein, the fixed lifting hook assembly and the sliding lifting hook assembly are the same in number.

In some preferred embodiments, a beam reinforcement assembly is also included.

In some preferred embodiments, the beam reinforcement assembly comprises a tie bar vertical plate and a tie bar; the lacing wire vertical plate is positioned in the middle of the cross beam, the number of the lacing wires is two, one end of each lacing wire is connected with the top of the lacing wire vertical plate, and the other end of each lacing wire is connected with the position of two adjacent ends of the cross beam.

In some preferred embodiments, the side walls at the two ends of the cross beam are respectively provided with armrests.

On the other hand, the invention also provides a method for transporting the long track in the limited space, wherein the device for transporting the long track in the limited space comprises a long-strip-shaped cross beam, a traveling wheel set connected to the cross beam, a fixed hook assembly and a sliding hook assembly, wherein the fixed hook assembly and the sliding hook assembly are respectively connected to two ends of the cross beam; which comprises the following steps:

(1) pushing a device for transporting the long-strip track in the limited space to be above the long-strip track to be transported and to be positioned in the middle of the long-strip track;

(2) pressing down a cross beam with one end of a fixed lifting hook component, and clamping the fixed lifting hook component on the waist parts at two sides of one side of the long-strip track;

(3) clamping the sliding hook components at the other end of the cross beam at the waist parts at two sides of the other side of the long strip track;

(4) lifting the long rail by the sliding hook assembly, wherein the lifting height is controlled to be about 5-10 cm above the ground;

(5) the walking wheel set rotates under the action of force to drive the cross beam and the long track to move in a limited space and walk to a specified installation position;

(6) after the side, connected with the long-strip track, of the sliding hook component is lowered to the ground, the sliding hook component is separated from the long-strip track;

(7) under the action of gravity of the rail, the long rail on one side connected with the fixed lifting hook assembly descends to the ground, and the fixed lifting hook assembly is separated from the long rail;

(8) the walking wheel set is driven to rotate under the action of force, so that the cross beam is driven to move in a limited space and leave an appointed installation position;

(9) and (5) repeating the steps (1) to (8) to carry out the transportation of the next long track.

In some preferred embodiments, the set of road wheels comprises two road wheels; the two walking wheels are symmetrically fixed on two sides of the beam through a connecting shaft, and the walking wheels are locked on the connecting shaft through cotter pins.

In some preferred embodiments, the bottom of the cross beam is provided with a seat plate, and the connecting shaft is locked on the seat plate through a U-shaped pipe clamp and a U-shaped pipe clamp nut.

In some preferred embodiments, the fixed hook assembly comprises a lug plate, a fixed hook nut, and a fixed hook bolt; the two lifting lug plates are fixedly connected to the bottom of one end of the cross beam; the fixed hook is locked between the two lug plates by a fixed hook bolt and a fixed hook nut.

In some preferred embodiments, in the step (2), the cross beam with one end of the fixed hook assembly is pressed down, the fixed hook is clamped on the waist parts on two sides of the long track in a left-right rotating mode, and the fixed hook is fixed with the lug plate by using a fixed hook bolt and a fixed hook nut.

In some preferred embodiments, in the step (7), under the gravity of the rail, the long rail on one side connected to the fixed hook assembly descends to the ground, and after the fixed hook bolt and the fixed hook nut are loosened to loosen the fixed hook from the lug plate, the fixed hook is rotated left and right to detach from the waist parts on both sides of the long rail.

In some preferred embodiments, the sliding hook assembly includes a guide bolt and a guide nut at the other end of the beam, as well as a wire rope, shackle and sliding hook; one end of the steel wire rope is connected with the shackle and then is lapped on the guide bolt and steered through the guide bolt; the sliding hook is connected with the shackle; the steel wire rope pulling device is characterized by further comprising a connecting rod and a chain block, wherein the connecting rod and the chain block are fixed on the cross beam, and the chain block is connected with the other end of the steel wire rope and is fixedly connected with the connecting rod.

In some preferred embodiments, in the step (3), the chain block at the other end of the cross beam is loosened, so that the wire rope, the shackle and the sliding hook are in a loose state, and the sliding hook is rotated left and right to be fastened to the waist portions on the two sides of the long rail.

In some preferred embodiments, in step (4), the elongated rail is lifted by pulling on the chain block.

In some preferred embodiments, in step (6), the chain block is loosened to lower the elongated rail on one side of the slide hook to the ground, and then the slide hook engaged with the elongated rail is loosened to separate the slide hook from the elongated rail.

In some preferred embodiments, the side walls at two ends of the cross beam are respectively provided with a handrail; in the step (1), the step (5) and the step (8), the driving wheel set is rotated by applying force on the handrail.

In some preferred embodiments, a beam reinforcement assembly is also included.

In some preferred embodiments, the beam reinforcement assembly comprises a tie bar vertical plate and a tie bar; the lacing wire vertical plate is positioned in the middle of the cross beam, the number of the lacing wires is two, one end of each lacing wire is connected with the top of the lacing wire vertical plate, and the other end of each lacing wire is connected with the position of two adjacent ends of the cross beam.

In some preferred embodiments, the fixed hook assembly and the sliding hook assembly are one or more; wherein, the fixed lifting hook assembly and the sliding lifting hook assembly are the same in number.

In some preferred embodiments, two fixed hook assemblies and two sliding hook assemblies are respectively connected to two ends of the cross beam side by side, and by the method of the steps (1) to (9), each fixed hook assembly and each sliding hook assembly is hung on one long track, the two long tracks are hung below the cross beam in parallel, and the two long tracks are transported by rotating the travelling wheel sets.

Advantageous effects

The device and the method for transporting the long-strip track in the limited space realize that the long-strip track is transported to the appointed installation position in the limited space, ensure the safety, reduce the production cost, improve the working efficiency and ensure the installation progress. Moreover, the device and the method reduce the hoisting difficulty and the safety risk, obviously reduce the hoisting cost and time consumption, improve the hoisting and transportation efficiency by at least 5 times, and have important reference significance for hoisting similar machine room long-distance crane rails.

Drawings

Fig. 1 is a schematic view of the structure of an apparatus for handling elongated rails in a confined space according to the present invention;

fig. 2 is a side view of the apparatus for handling elongated rails within a confined space of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line B-B in FIG. 1;

FIG. 5 is a schematic view of the connection of the fixed hook assembly to the beam;

FIG. 6 is a schematic cross-sectional view taken along line C-C in FIG. 5;

FIG. 7 is a schematic view of a portion of the fixed hook assembly attached to a beam;

FIG. 8 is a schematic cross-sectional view taken along line D-D of FIG. 7;

fig. 9 is an enlarged schematic view of the connection of the road wheels and the cross beam.

Reference numerals:

carry rectangular orbital device 100 in restricted space, walking wheel group 25, walking wheel 1, split pin 2, connecting axle 3, bedplate 4, U-shaped pipe strap 5, U-shaped pipe strap nut 6, fixed lifting hook 7, fixed lifting hook nut 8, fixed lifting hook bolt 9, lug plate 10, handrail 11, lacing wire 12, crossbeam 13, lacing wire riser 14, connecting bolt 15, connecting nut 16, connecting rod 17, chain block 18, wire rope 19, shackle 20, sliding hook 21, guide bolt 22, guide nut 23, rectangular track 200.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

As shown in fig. 1 to 9, the device 100 for transporting a long track in a limited space of the present invention includes a long-strip-shaped cross beam 13 and a traveling wheel 25 connected to the cross beam, the traveling wheel set 25 is fixed on the cross beam 13 and is in force linkage with the cross beam 13, when a pushing force or a pulling force is applied to the cross beam 13 or the traveling wheel set 25, a traveling wheel 1 of the traveling wheel set 25 rotates, and the traveling wheel 1 rotates to drive the cross beam 13 to move linearly, thereby realizing the linear movement of the cross beam 13 in the limited space. When a steering force is applied to the cross beam 13 or the road wheel sets 25, the cross beam 13 and the road wheels 1 rotate in directions, so that the cross beam 13 can perform steering movement in a limited space. In the present invention, the limited space is a space that is completely open and not enclosed by four sides, the limited space refers to a space that is enclosed by one side or two sides or three sides or four sides, and further, the enclosed space also has a roof, and generally, the limited space has a limited size (length, width and height), so that the whole space is limited, such as a factory building or a machine room. The apparatus 100 for carrying a long rail in a limited space further includes a fixed hook assembly and a sliding hook assembly, wherein the fixed hook assembly and the sliding hook assembly are respectively connected to both ends of the cross beam. The fixed and sliding hook assemblies cooperate to lift the elongated rail 200, and in the particular embodiment, the fixed and sliding hook assemblies secure the elongated rail to the lower portion of the cross beam 13. In one embodiment, the beam 13 is formed by assembling two channel beams, and is a hollow frame-shaped beam. In some embodiments, the length of the beam 13 is between 6 and 12 meters, and preferably, the length of the elongated beam 13 is 6 meters, 8 meters, 10 meters, and 12 meters.

In the invention, the walking wheel set 25 comprises two walking wheels 1; two walking wheels 1 are symmetrically fixed on two sides of a beam 13 through a connecting shaft 3. Wherein, the length of the connecting shaft 3 is determined according to the mounting tread walking width of the long rail 200. For example, the length of the connecting shaft 3 is between 50 and 100cm, and preferably, the length of the connecting shaft 3 is 50cm, 60cm, 80cm and 100 cm. In one embodiment, the middle part of the connecting shaft 3 is fixed at the bottom of the cross beam 13, and two ends of the connecting shaft 3 are respectively sleeved and fixed with the walking wheels 1. The connecting shaft 3 may be welded to the bottom of the cross beam 13. In a more specific embodiment, in order to ensure that the traveling wheel set 25 and the connecting shaft 3 can be better fixed on the cross beam 13, the seat plate 4 is fixed at the bottom of the cross beam 13, and the connecting shaft 3 is fixedly connected with the seat plate 4. The width of the seat plate 4 is larger than that of the cross beam 13, and two sides of the seat plate protrude out of the cross beam 13. The connecting shaft 3 is locked on two sides of the base plate 4 protruding out of the beam 13 through the U-shaped pipe clamp 5 and the U-shaped pipe clamp nut 6, and then the walking wheels 1 are respectively sleeved on two ends of the connecting shaft 3 and then inserted into holes at the end part of the connecting shaft 3 through the cotter pins 2, so that the walking wheels 1 are locked on the connecting shaft 3. In some embodiments, the set of road wheels 25 is a set and is connected to the middle of the beam 13. In other embodiments, the plurality of road wheel sets 25 are uniformly connected to the beam 13. For example, the two traveling wheel sets 25 are respectively connected to two ends of the beam 13; for another example, the traveling wheel sets 25 are three sets, and are respectively connected to the two ends and the middle of the cross beam 13.

In order to facilitate the application of force to the cross beam 13 or the road wheel set 25, a handrail 11 may be provided on the cross beam 13 or the road wheel set 25, and the handrail 11 is fixed on the cross beam 13 or the road wheel set 25. In one embodiment, armrests 11 are provided at the ends and in the middle of the beam 13. In one embodiment, there are two armrests 11 fixed to two ends of the beam. For example, the handrail 11 is made of steel or iron, and the handrail 11 is welded and fixed to the cross member 13. In one embodiment, the handrail 11 is formed by connecting two steel pipes to a transverse steel pipe, wherein the two steel pipes are respectively fixed on the side walls of the two ends of the cross beam 13.

The fixed hook assembly is used for fixing one end of the long rail 200 and comprises a lifting lug plate 10, a fixed hook 7, a fixed hook nut 8 and a fixed hook bolt 9. The two lifting lug plates 10 are symmetrically connected to the end of the cross beam 13, and specifically, the two lifting lug plates 10 are fixedly connected to the bottom of one end of the cross beam 13 through the tops of the two lifting lug plates 10, so that the lifting lug plates 10 are perpendicular to the cross beam 13. Wherein the distance between the two lug plates 10 is larger than the thickness of the fixing hook 7. The bottom of the lug plate 10 is provided with a through hole, the top of the fixed lifting hook 7 is also provided with a through hole, the top of the fixed lifting hook 7 is arranged between the two lug plates 10, the through hole at the bottom of the lug plate 10 and the through hole at the top of the fixed lifting hook 7 are positioned on the same connecting line, the fixed lifting hook bolt 9 is inserted into the three through holes, and the fixed lifting hook nut 8 is sleeved with the fixed lifting hook bolt 9 for locking. When necessary, can loosen fixed lifting hook 7, for example, when fixed lifting hook bolt 9 and fixed lifting hook nut 8 are screw-thread fit, with fixed lifting hook nut 8 from fixed lifting hook bolt 9 back of unscrewing, take out fixed lifting hook bolt 9, make the both sides waist of cup jointing rectangular track 200 that fixed lifting hook 7 bottom crotch can be free. In some embodiments, the shackle plate 10 may be welded to the bottom of the cross member 13.

The sliding hook assembly is used to fix the other end of the elongated rail 200 and lift the entire elongated rail 200. In the specific embodiment, the sliding hook assembly includes a guide bolt 22 and a guide nut 23 at the other end of the beam 13, as well as a wire rope 19, a shackle 20, and a sliding hook 21; and a connecting rod 17 and a chain block 18 fixed on the cross beam. Wherein, one end of the steel wire rope 19 is connected with the shackle 20 and then is lapped on the guide bolt 22, and the steel wire rope 19 is turned through the guide bolt 22. The shackle 20 is a U-shaped ring into which the wire rope 19 is fastened. Through holes are arranged at two open ends of the U-shaped ring, the top of the sliding lifting hook 21 is provided with a through hole, the top of the sliding lifting hook 21 is inserted into the two open ends of the U-shaped ring, three through holes are connected into a line and locked by a shackle bolt and a shackle nut. When necessary, for example, the slide hook 21 is removed to engage the long rail 200, the shackle bolt and shackle nut are loosened. The guide bolt 22 is inserted into the through hole at the end of the beam 13 and then locked and fixed on the beam 13 by the guide nut 23. The connecting rod 17 is fixed vertically on the upper surface of the beam 13, and in some embodiments, the connecting rod 17 is fixed between the middle of the beam 13 and the end with the guide bolt 22. The connecting rod 17 may be made of steel and welded to the cross beam 13. The chain block 18 is fixedly connected with the connecting rod 17 after being connected with the other end of the steel wire rope 18. Specifically, a through hole is formed in the top of the connecting rod 17, and the connecting bolt 15 penetrates through the connecting position of the through hole and the chain block 18 and then is locked and fixed through a connecting nut 16.

In some preferred embodiments, a beam reinforcement assembly is also included. Since the apparatus 100 is used to convey the long rails 200, the long rails 200 are usually cast steel, and their individual lengths are 12 meters or more, so that their weight is very heavy. Thus, a reinforcement assembly is provided on the cross beam 13. Specifically, the cross beam reinforcing component comprises a lacing wire vertical plate 14 and a lacing wire 12; wherein, the lacing wire vertical plate 14 is positioned in the middle of the cross beam 13. The number of the tie bars 12 is two, one end of each of the two tie bars 12 is connected with the top of the tie bar vertical plate 14, and the other end of each of the two tie bars 12 is connected with the two adjacent ends of the cross beam 13. Specifically, the lacing wire vertical plate 14 is a steel plate, the width of the lacing wire vertical plate is the same as that of the cross beam 13, and the thickness of the lacing wire vertical plate is 5 mm. The height of the lacing plate 14 is usually between 50cm and 100cm, and usually, the lacing plate 14 can also be used as an armrest. The tie bars 12 are made of steel bars, one end of each tie bar 12 is welded to the top of the tie bar vertical plate 14, the other ends of the two tie bars 12 are respectively welded to the positions of the adjacent ends of the upper surface of the cross beam 13, and in some embodiments, the distance between the position point where the other ends of the tie bars 12 are connected and the end of the cross beam 13 is 0-1 meter. Specifically, the connection point is located at a distance of 0.5 m or 1 m from the end.

The method for conveying the long rail in the limited space by using the device 100 for conveying the long rail in the limited space comprises the following steps:

(1) pushing the device 100 for transporting the long rail in the limited space to the upper part of the long rail 200 to be transported; wherein the device 100 for transporting the long rail in the limited space is positioned at the middle position of the long rail 200;

(2) pressing down a cross beam 13 with one end of a fixed hook component, loosening a fixed hook 7 from a lifting lug plate 10, clamping the fixed hook 7 on the waist parts of two sides of a long rail 200 in a left-right rotating mode, and locking the fixed hook 7 and the lifting lug plate 10 by using a fixed hook bolt 9 and a fixed hook nut 8;

(3) the chain block 18 is loosened to enable the steel wire rope 19, the shackle 20 and the sliding hook 21 to be in a loose state, or the sliding hook 21 at the other end of the cross beam 13 is taken out of the shackle 20, the sliding hook 21 is clamped at the waist parts at two sides of the long rail 200 in a left-right rotating mode, the steel wire rope 19 is connected with the sliding hook 21 through the shackle 20,

(4) tensioning the chain block 18, lifting the long track 200, and controlling the lifting height to be about 5-10 cm above the ground;

(5) force is applied to the cross beam handrail 11, so that the travelling wheels 1 rotate under the action of force to drive the cross beam 13 and the long track 200 to move forward in a limited space; when needed, force can be applied to the cross beam handrail 11, so that the travelling wheels 1 can turn under the action of force, and the cross beam 13 and the long rail 200 can turn in a limited space;

(6) after the device 100 travels to a designated installation position, the armrest 11 is released;

(7) loosening the chain block 18 to make the long rail 200 at one side of the sliding hook 21 descend to the ground, and loosening the sliding hook 21 clamped on the long rail 200;

(8) under the action of gravity of the rail, the rail on one side of the fixed lifting hook 7 descends to the ground, after the fixed lifting hook 7 and the lifting lug plate 10 are loosened by loosening the fixed lifting hook bolt 9 and the fixed lifting hook nut 8, the fixed lifting hook 7 is rotated left and right to separate the fixed lifting hook 7 from the waist parts on two sides of the long rail 200, and the long rail 200 is detached;

(9) applying force on the cross beam handrail 11 to enable the travelling wheels 1 to rotate under the action of force to drive the cross beam 13 to move in a limited space, and enabling the whole device 100 to leave a specified installation position;

(10) and (5) repeating the steps (1) to (9) to carry out the transportation of the next long rail 200.

Of course, the apparatus and method for transporting long rails in a limited space of the present invention is not limited to transporting one long rail at a time, and can transport more than one long rail at a time by changing part of the structure of the apparatus according to the size of the actual limited space. For example, the length of the beam is lengthened, and a fixed hook assembly or a sliding hook assembly is arranged on the beam corresponding to the tail end and the head end of each long strip rail according to the length of the long strip rails, so that the purpose of simultaneously carrying two or more long strip rails connected in series can be realized. For another example, the width of the beam is widened according to the width of the long-strip rails, two or more fixed hook assemblies and sliding hook assemblies are respectively arranged at two ends of the beam side by side, and the two or more long-strip rails are hung and connected below the beam in parallel for carrying.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.