Inclined-leg gantry crane adjacent to urban viaduct

Abstract

The utility model discloses an inclined-leg gantry crane adjacent to an urban viaduct. The inclined-leg gantry crane comprises a top frame, a plurality of reinforcing rods are arranged on the outer wall of the top frame, sleeve plates are fixedly connected to the two sides of the top frame through bolts, supporting legs are installed at the bottoms of the two sleeve plates, and a driver is arranged below the top frame. The utility model relates to the technical field of gantry cranes, through the cooperation of a top frame, supporting legs, reinforcing rods and sleeve plates, the supporting legs of the gantry crane close to the side of a viaduct can be changed to be inclined inwards, the distance between the longest point of the modified whole machine and the flange plate edge of the viaduct is 584 mm, the normal safety distance is 200-300 mm so as to meet the use requirement of the gantry crane, the maximum span of inclined legs is 26.8 m, the minimum span of inclined legs is 22.9 m, the left supporting legs and the right supporting legs are matched, and the service life of the gantry crane is prolonged. According to the invention, any span change can be realized every 0.1 m in a 22.9-26.8 m gauge interval (i.e., the span change of the support legs on the front support leg side is 0.5 m * 7 = 3.5 m, and the span change of the support legs on the inclined support leg side is 0.1 m * 4 = 0.4 m), for example, when the assembly span is 25.4 m, the support legs on the front support leg side move towards the midspan by 1 m, and the support legs on the inclined support leg side move towards the midspan by 0.4 m.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to an inclined-leg gantry crane close to a city viaduct. Background Art

[0002] Gantry crane is a kind of deformation of bridge crane, also called portal crane. Gantry crane has the characteristics of high site utilization, large operating range, wide adaptability and strong versatility, and is widely used in subway station construction. Its metal structure is like a door-shaped frame, with two legs installed under the main beam, which can walk directly on the track on the ground, and the two ends of the main beam can have outward cantilever beams;

[0003] When the gantry crane was installed next to the foundation pit of a city viaduct subway station, the gantry crane legs could not be installed vertically as usual because the foundation pit was very close to the viaduct. This increased the difficulty of installation for the workers and brought inconvenience to them. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a slanted-leg gantry crane close to a city viaduct, which solves the problem that when a subway station is constructed close to a city viaduct, the gantry crane cannot erect vertical legs during construction, which increases the difficulty of erection for the workers and thus brings inconvenience to the workers.

[0005] To achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a slanted-leg gantry crane close to a city viaduct, comprising a top frame, a plurality of reinforcing rods are arranged on the outer wall of the top frame, sleeve plates are fixedly connected on both sides of the top frame by bolts, legs are installed on the bottom of the two sleeve plates, a driver is arranged below the top frame, and a hook is arranged below the driver.

[0006] Preferably, a cross bar is installed below the top frame, and a power box is installed on the outer wall of the cross bar.

[0007] Preferably, a top plate is installed on the top of the driver, vertical rods are installed at the four corners of the top plate, springs are sleeved on the outer walls of the four vertical rods, the tops of the four springs are fixedly connected to the bottom of the top plate, and the tops of the four vertical rods are fixedly connected to the bottom of the power box.

[0008] Preferably, a climbing frame is installed on the outer wall of the supporting leg, and a rubber pad is installed on the outer wall of the climbing frame.

[0009] Preferably, a bottom plate is installed at the bottom of the supporting leg, a power wheel is installed at the bottom of the bottom plate, and a ground rail is movably connected to the bottom of the power wheel.

[0010] Beneficial Effects

[0011] The utility model provides a gantry crane with inclined legs close to a viaduct in the city. It has the following beneficial effects: the gantry crane with inclined legs close to the viaduct in the city can change the legs of the gantry crane close to the viaduct to be inclined inwards through the cooperation of the top frame, legs, reinforcing rods and sleeve plates. After the modification, the longest point of the whole machine is 584mm away from the edge of the viaduct flange plate, and the normal safety distance is 200-300mm to meet the use of the gantry crane. The maximum span of the inclined legs is 26.8m, and the minimum span is 22.9m. The left and right legs cooperate to realize the 22.9-26.8m track gauge range. The span can be changed arbitrarily every 0.1m (that is, the legs on the positive leg side change the span every 0.5m*7=3.5m, and the legs on the inclined leg side change the span every 0.1m*4=0.4m). For example, when the assembling span is 25.4m, the legs on the positive leg side move 1m to the middle of the span, and the legs on the inclined leg side move 0.4m to the middle of the span;

[0012] Through the coordination of springs, vertical rods and top plates, automatic buffering protection can be provided when objects are lifted or lowered, avoiding damage to objects or equipment caused by instantaneous impact during lifting or lowering, thereby effectively ensuring the safe use of the inclined-leg gantry crane close to the urban elevated bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 A cross-sectional view of

[0015] Figure 3 for Figure 2 Structural diagram of the middle top frame, top plate and spring;

[0016] Figure 4 for Figure 2 Schematic diagram of the structure of the middle ground rail, power wheel and base plate.

[0017] In the figure: 1, top frame, 2, outriggers, 3, reinforcing rods, 4, sleeves, 5, hooks, 6, power boxes, 7, cross bars, 8, top plates, 9, vertical bars, 10, springs, 11, drivers, 12, power wheels, 13, bottom plates, 14, ground rails, 15, climbing frames. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0020] When the gantry crane was installed next to the foundation pit of a subway station next to a city viaduct, the gantry crane legs could not be installed vertically as usual because the foundation pit was very close to the viaduct. This increased the difficulty of the installation and brought inconvenience to the workers.

[0021] In view of this, the utility model provides a gantry crane with inclined legs close to a city viaduct. Through the cooperation of a top frame, legs, reinforcing rods and sleeves, the legs of the gantry crane on the viaduct side can be modified to be inclined inwards. After the modification, the longest point of the whole machine is 584mm away from the edge of the viaduct flange plate, and the normal safety distance is 200-300mm to meet the needs of the gantry crane. The maximum span of the inclined legs is 26.8m, and the minimum span is 22.9m. The left and right legs cooperate to achieve arbitrary span changes of every 0.1m in the gauge range of 22.9-26.8m (that is, the legs on the positive leg side change span every 0.5m*7=3.5m, and the legs on the inclined leg side change span every 0.1m*4=0.4m). For example, when the assembling span is 25.4m, the legs on the positive leg side move 1m to the middle of the span, and the legs on the inclined leg side move 0.4m to the middle of the span.

[0022] Embodiment 1: By Figure 1 , 2 , 3 and 4 show that a gantry crane with inclined legs close to a city viaduct comprises a top frame 1, a plurality of reinforcing rods 3 are arranged on the outer wall of the top frame 1, sleeve plates 4 are fixedly connected to both sides of the top frame 1 by bolts, legs 2 are installed at the bottom of the two sleeve plates 4, a driver 11 is arranged below the top frame 1, and a hook 5 is arranged below the driver 11;

[0023] In the specific implementation process, it is worth pointing out that the reinforcing rod 3 can improve the overall strength of the top frame 1, thereby ensuring the use strength, and the support leg 2 should be installed with an inward inclination of 6.26°, so that the safe distance between the inclined leg gantry crane adjacent to the urban viaduct and the viaduct can be ensured, and the normal walking requirements of the inclined leg gantry crane adjacent to the urban viaduct can be met. The driver 11 can change the position height of the hook 5, so the hook 5 can be used to lift external objects, and the driver 11 is a well-known technology for those skilled in the art, and its internal structure, installation method and electrical equipment are not specifically limited, so as to meet the actual work needs of this case, and this is not the main technical feature of this case, so no further elaboration is made here, and those skilled in the art should understand it in a broad sense;

[0024] Furthermore, a cross bar 7 is installed below the top frame 1, and a power box 6 is installed on the outer wall of the cross bar 7;

[0025] In the specific implementation process, it is worth pointing out that the power box 6 can move along the outer wall of the cross bar 7, and then the left and right positions of the components such as the driver 11 and the hook 5 can be changed, so that the items can be lifted and transported, and the power box 6 is a well-known technology for those skilled in the art, and its internal structure, installation method and electrical equipment are not specifically limited, so as to meet the actual work needs of this case, and this is not the main technical feature of this case, so no further elaboration is made here, and those skilled in the art should understand it in a broad sense;

[0026] Furthermore, a top plate 8 is installed on the top of the driver 11, and vertical rods 9 are installed at the four corners of the top plate 8. The outer walls of the four vertical rods 9 are sleeved with springs 10, and the tops of the four springs 10 are fixedly connected to the bottom of the top plate 8, and the tops of the four vertical rods 9 are fixedly connected to the bottom of the power box 6;

[0027] In the specific implementation process, it is worth pointing out that a damping pad is installed on the outer wall of the vertical rod 9, so that the elastic potential energy of the spring 10 can be consumed by the friction between the vertical rod 9 and the top plate 8, so that the spring 10 can be quickly stabilized;

[0028] Furthermore, a climbing frame 15 is installed on the outer wall of the leg 2, and a rubber pad is installed on the outer wall of the climbing frame 15;

[0029] In the specific implementation process, it is worth pointing out that the design of the climbing frame 15 can make it more convenient for the staff to reach the top of the inclined leg gantry crane adjacent to the urban viaduct to carry out maintenance work;

[0030] Furthermore, a bottom plate 13 is installed at the bottom of the leg 2, a power wheel 12 is installed at the bottom of the bottom plate 13, and a ground rail 14 is movably connected to the bottom of the power wheel 12;

[0031] In the specific implementation process, it is worth pointing out that the power wheel 12 can move along the top groove of the ground rail 14, thereby changing the overall position of the inclined leg gantry crane adjacent to the urban viaduct. The power wheel 12 is a well-known technology for those skilled in the art, and its specific model is not limited, as long as it meets the use requirements;

[0032] Specifically, when using the inclined-leg gantry crane close to the urban elevated bridge, the staff first places the ground rail 14 at a suitable position, and then the supporting legs 2, the top frame 1 and other components can be spliced ​​and installed. When the splicing is completed, it can be put into use. When lifting the object, the staff turns on the external power supply of the driver 11. At this time, the driver 11 can change the position height of the hook 5, and then the external objects can be lifted by the hook 5. At the moment of lifting the object, the top plate 8 can be driven to slide along the outer wall of the vertical rod 9, and the spring 10 can be compressed at the same time. At this time, the elastic force of the spring 10 can be used to perform buffering and protection work, and then the staff can change the position of the hook 5 and other components through the power box 6, thereby realizing the transportation of the objects.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0034] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gantry crane with inclined legs close to a city viaduct, comprising a top frame (1), characterized in that: The outer wall of the top frame (1) is provided with a plurality of reinforcing rods (3), both sides of the top frame (1) are fixedly connected with sleeve plates (4) by means of bolts, the bottoms of the two sleeve plates (4) are both provided with supporting legs (2), a driver (11) is provided below the top frame (1), and a hook (5) is provided below the driver (11).

2. The inclined-leg gantry crane close to the urban viaduct according to claim 1 is characterized in that: A cross bar (7) is installed below the top frame (1), and a power box (6) is installed on the outer wall of the cross bar (7).

3. The inclined-leg gantry crane close to the urban viaduct according to claim 1 is characterized in that: A top plate (8) is installed on the top of the driver (11), vertical rods (9) are installed at four corners of the top plate (8), springs (10) are sleeved on the outer walls of the four vertical rods (9), the tops of the four springs (10) are fixedly connected to the bottom of the top plate (8), and the tops of the four vertical rods (9) are fixedly connected to the bottom of the power box (6).

4. The inclined-leg gantry crane close to a city viaduct according to claim 1, characterized in that: A climbing frame (15) is installed on the outer wall of the supporting leg (2), and a rubber pad is installed on the outer wall of the climbing frame (15).

5. The inclined-leg gantry crane close to a city viaduct according to claim 1, characterized in that: A bottom plate (13) is installed at the bottom of the supporting leg (2), a power wheel (12) is installed at the bottom of the bottom plate (13), and a ground rail (14) is movably connected to the bottom of the power wheel (12).

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