Gantry crane suitable for low-clearance hoisting

Abstract

The invention discloses a gantry crane suitable for low-clearance hoisting, which belongs to the technical field of bridge engineering and comprises a supporting mechanism and a hoisting mechanism. The supporting mechanism comprises vertical supporting components and a transverse supporting component, the two vertical supporting components are arranged in a spaced mode in the transverse direction, and the vertical supporting components can stretch out and draw back in a reciprocating mode perpendicular to the supporting face. The transverse supporting component is connected to the two vertical supporting components, a guide groove is formed in the transverse supporting component, and an opening penetrating through the groove bottom is formed in the guide groove in the transverse direction; the hoisting mechanism comprises a walking component and a hoisting component, and the walking component is arranged in the guide groove; the hoisting component is installed on the walking component and comprises a hoisting assembly, and the hoisting assembly penetrates through the opening. The gantry crane suitable for low-clearance hoisting provided by the invention can adapt to a low-clearance complex construction environment, not only can form a stable hoisting body structure in the low-clearance construction environment, but also can ensure that the gantry crane can provide stable supporting hoisting on supporting surfaces with different gradients.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge engineering, and particularly relates to a gantry crane suitable for low-clearance hoisting. Background Art

[0002] With the rapid development of the railway industry in China, more and more old operating railway bridges have different requirements such as maintenance and reinforcement, beam replacement, new track addition, and upgrading. When carrying out maintenance and reinforcement or other construction operations under an operating railway, it is often necessary to transport construction materials and temporary equipment at the bottom of the beam with limited clearance, which leads to an increasing demand for hoisting operations in low-clearance environments such as low clearance and adjacent to the operating line. In addition to their large size and difficulty in being used in low-clearance environments, traditional gantry cranes (or other common hoisting equipment) have the following technical defects:

[0003] The structure of a conventional gantry crane is relatively complex, and the overall installation and disassembly efficiency of the equipment is relatively low. For working conditions with limited space and high clearance requirements such as low clearance or adjacent to the operating line, due to the large distance between the outriggers of the traditional gantry crane, it occupies a large area and it is basically difficult to enter sites with limited space such as the bottom of the existing line beam. At the same time, since the inspection and maintenance of existing railway bridges usually need to be completed during the construction skylight period, and in related technologies, due to the relatively complex structural devices of traditional gantry cranes, in the case of relatively complex construction environments such as inclined support surfaces, the traditional gantry crane structures in related technologies cannot achieve stable support and quick use, which in turn leads to the inability to guarantee the construction period and an increase in costs, resulting in poor economic benefits. Summary of the Invention

[0004] In view of one or more of the above defects or improvement requirements in the prior art, the present invention provides a gantry crane suitable for low-clearance hoisting, which can adapt to the complex construction environment of low clearance. It can not only quickly and conveniently form a stable lifting structure in the low-clearance construction environment, but also ensure that the gantry crane can provide stable and reliable support and hoisting on support surfaces with different inclination angles.

[0005] To achieve the above object, the present invention provides a gantry crane suitable for low-clearance hoisting, which is used for hoisting materials on an inclined support surface in a low-clearance environment, and includes:

[0006] A support mechanism, the support mechanism includes a transverse support member and at least two vertical support members. The two vertical support members are arranged at intervals along the transverse direction, and each vertical support member can reciprocally expand and contract perpendicular to the support surface; both ends of the transverse support member are detachably and rotatably connected to the tops of the two vertical support members, and a guiding groove extending along the transverse direction is provided on the top end surface of the transverse support member. An opening penetrating the bottom of the groove is provided in the guiding groove, the opening extends along the transverse direction, and the bottom surface of the guiding groove is always parallel to the horizontal plane;

[0007] Lifting mechanism, the lifting mechanism includes a traveling member and a hoisting member, the traveling member is arranged in the guiding groove, and the traveling member can reciprocate along the guiding groove; the hoisting member is detachably installed on the traveling member, and the hoisting member includes a hoisting assembly that can telescopically move vertically, and the hoisting assembly passes through the opening for hoisting materials vertically.

[0008] As a further preference of the present invention, the vertical support member includes two legs arranged at intervals longitudinally, the horizontal support member includes two cross beams arranged at intervals longitudinally, and two ends of the cross beam are detachably and rotatably connected to the legs of the two vertical support members.

[0009] As a further preference of the present invention, the vertical support member includes a leg extending vertically, the horizontal support member includes two cross beams arranged at intervals longitudinally and connecting beams arranged at intervals transversely, and the two connecting beams are respectively fixedly installed at the ends of the cross beams to form a rectangular frame structure; the transverse ends of the rectangular frame structure are detachably and rotatably connected to the two legs.

[0010] As a further preference of the present invention, wing plates extending transversely are arranged on the side walls of the two cross beams facing each other, and openings are formed at intervals transversely between adjacent wing plates.

[0011] As a further preference of the present invention, a rotating motor is arranged at the end of the leg, and the rotating shaft of the rotating motor is detachably connected to the horizontal support member.

[0012] As a further preference of the present invention, the vertical support member further includes a support bottom plate extending longitudinally, and the bottoms of the legs can be detachably and fixedly installed on the top of the support bottom plate.

[0013] As a further preference of the present invention, a number of lateral support rods are arranged between the leg and the support bottom plate, and both ends of each lateral support rod are respectively detachably connected to the leg and the support bottom plate.

[0014] As a further preference of the present invention, a number of traction wheels are arranged on the bottom end surface of the support bottom plate, and at least one traction wheel is provided with a traction motor for driving the support mechanism to move.

[0015] As a further preference of the present invention, the traveling member includes a traveling bracket and a number of traveling wheels, and the traveling wheels are symmetrically arranged on both longitudinal sides of the traveling bracket for driving the traveling bracket to reciprocate transversely.

[0016] As a further preference of the present invention, the hoisting member includes a conical rotor braking asynchronous motor.

[0017] Generally speaking, compared with the prior art, the beneficial effects of the above technical solutions conceived by the present invention include:

[0018] (1) The gantry crane suitable for low headroom hoisting of the present invention includes a support mechanism and a hoisting mechanism. The support mechanism includes at least two vertical support members and a horizontal support member. The two vertical support members are arranged at intervals in the horizontal direction, and each vertical support member can reciprocally expand and contract perpendicular to the support surface; both ends of the horizontal support member are detachably and rotatably connected to the tops of the two vertical support members, and a guiding groove is provided on the top surface of the horizontal support member, and an opening penetrating the bottom of the groove is formed in the guiding groove along the horizontal direction; the hoisting mechanism includes a traveling member and a hoisting member. The traveling member is arranged in the guiding groove, and the traveling member can reciprocally move along the guiding groove; the hoisting member is detachably installed on the traveling member, and the hoisting member includes a hoisting assembly that can expand and contract vertically. The hoisting assembly passes through the opening and is used for hoisting materials vertically. This gantry crane can adapt to the complex construction environment of low headroom. It can not only conveniently and quickly form a stable lifting structure in the construction environment of low headroom, but also ensure that the gantry crane can provide stable and reliable support and hoisting on support surfaces with different inclination angles.

[0019] (2) For the gantry crane suitable for low headroom hoisting of the present invention, through the second locking assembly provided between the telescopic column and the limit sleeve, after the telescopic column completes the vertical expansion and contraction movement, the stable positioning between the two can be realized through this second locking assembly. At the same time, by adopting a limit block and a limit tooth groove to form the second locking assembly, and combining with the arrangement of a number of limit teeth at the end of the limit block, the limit block can be accurately clamped in the limit card slot of the telescopic column. Furthermore, by adjusting the dimensions and densities of the limit card and the limit card slot, the adjustment accuracy between the telescopic column and the limit sleeve of the second locking assembly can be improved.

[0020] (3) The gantry crane suitable for low - headroom hoisting of the present invention has stable support, convenient assembly, and good adaptability. By adopting a conveniently detachable overall structure of the gantry crane, users can quickly assemble and form it at the construction site. Meanwhile, by setting telescopic legs and a transverse support member rotatably arranged at the top of the legs, the height of the gantry crane can be flexibly adjusted according to the actual construction height. Moreover, combined with the groove - width adjustment assembly arranged on the cross - beam, when the gantry crane is located on an inclined plane, not only can the wings on the two cross - beams be aligned and parallel by means of the telescoping of the brackets and the rotation of the cross - beam, but also the width of the guide groove can be adjusted by means of this groove - width adjustment assembly, thereby ensuring that the guide groove can form a stable limit for the traveling member, further expanding the applicable range of the gantry crane. In addition, combined with the longitudinally extending support bottom plate arranged under the legs and the lateral support rods arranged between the legs and the support bottom plate, not only the stability of the leg structure is improved, but also the anti - tipping ability of the entire gantry crane can be effectively enhanced, ensuring the safe operation of the hoisting operation, and having good popularization prospects and application value. Brief Description of the Drawings

[0021] Figure 1 is the front view of the hidden part of the cross - beam of the gantry crane suitable for low - headroom hoisting in the embodiment of the present invention;

[0022] Figure 2 is the side view of the overall structure of the gantry crane suitable for low - headroom hoisting in the embodiment of the present invention;

[0023] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0024] 1, telescopic column; 2, limit sleeve; 3, lateral support rod; 4, support bottom plate; 5, traction wheel; 6, traction motor; 7, cross - beam; 8, wing; 9, traveling support; 10, traveling wheel; 11, lifting assembly; 12, lifting motor; 13, second locking assembly; 14, controller. Detailed Description of the Embodiment

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] Embodiment:

[0031] Please refer to Figures 1-2 , the gantry crane suitable for low headroom hoisting in the preferred embodiment of the present invention can adapt to the complex construction environment of low headroom. It can not only quickly and conveniently form a stable lifting structure in the construction environment of low headroom, but also ensure that the gantry crane can provide stable and reliable support and hoisting on support surfaces with different inclination degrees.

[0032] Specifically, in a preferred embodiment of the present application, the gantry crane applicable to low headroom hoisting includes a support mechanism and a hoisting mechanism. Among them, the support mechanism includes at least two vertical support members and a horizontal support member. The two vertical support members are arranged at intervals in the horizontal direction, and each vertical support member can reciprocally expand and contract perpendicular to the support surface, so that the gantry crane can adapt to the hoisting height requirements of different materials. At the same time, both ends of the horizontal support member are detachably and rotatably connected to the tops of the two vertical support members. In the actual application process, when the top of the vertical support member is located on an inclined plane, the rotation angle between the horizontal support member and the vertical support member can be adjusted through the detachable and rotatable connection structure at the top of the horizontal support member and the vertical support member, so that the horizontal support member can always be parallel to the horizontal plane. A guiding groove extending in the horizontal direction is provided on the top surface of the horizontal support member. At the same time, an opening penetrating the bottom of the groove is provided in the guiding groove in the horizontal direction, and the bottom surface of the guiding groove is always parallel to the horizontal plane, so as to provide a stable support foundation for the gantry crane.

[0033] Furthermore, the hoisting mechanism includes a traveling member and a hoisting member. The traveling member is arranged in the guiding groove. At the same time, the traveling member can reciprocally move along the guiding groove, and is used to drive the hoisting mechanism to reciprocally move in the horizontal direction, so as to lift and drive the material to realize the transformation of the spatial position. The hoisting member is detachably installed on the traveling member, and the hoisting member includes a lifting assembly 11 that can expand and contract vertically. The lifting assembly 11 passes through the opening provided at the bottom of the groove and is used to hoist the material vertically.

[0034] It should be noted that in a preferred embodiment of the present application, the direction perpendicular or plumb to the horizontal plane is the vertical direction; the horizontal support member extends in a plane parallel to the horizontal plane, and the extending direction of the horizontal support member is the horizontal direction; in the horizontal plane, the direction perpendicular to the horizontal direction is the longitudinal direction.

[0035] Furthermore, in a preferred embodiment of the present application, the vertical support member includes two legs arranged at intervals in the longitudinal direction, and the horizontal support member includes two cross beams 7 arranged at intervals in the longitudinal direction. At the same time, both ends of the cross beam 7 are detachably and rotatably connected to the legs of the two vertical support members. Then, in combination with the cross beam 7 and the two legs arranged at intervals horizontally, two gantry frames arranged at intervals in the longitudinal direction are formed. At the same time, a guiding groove structure is formed at the top of the two gantry frames, so as to facilitate the stable reciprocal movement of the hoisting mechanism in the horizontal direction.

[0036] Further, in another preferred embodiment of the present application, the vertical support member includes legs extending vertically, and the horizontal support member includes two cross beams 7 arranged at intervals longitudinally and connecting beams arranged at intervals transversely. At the same time, the two connecting beams are respectively fixedly installed at the ends of the cross beam 7 to form a rectangular frame structure. The transverse ends of the rectangular frame structure are detachably and rotatably connected to the two legs. If the vertical support member is arranged on an inclined support surface, the transverse ends of the rectangular frame structure can rotate relative to the legs, so that the rectangular frame structure can remain horizontal, thereby providing a stable support foundation for the hoisting of the hoisting mechanism.

[0037] Further, in a preferred embodiment of the present application, wing plates 8 extending transversely are provided on the opposite side walls of the cross beam 7 to form a guiding groove extending transversely, and openings are formed at intervals transversely between adjacent wing plates 8. During actual use, the traveling member is arranged in the guiding groove, and one end of the lifting assembly 11 is fixed to the traveling member, while the other end of the lifting assembly 11 passes vertically through the opening, so that the lifting assembly 11 can facilitate the stable lifting of the material.

[0038] Further preferably, in a preferred embodiment of the present application, a groove width adjustment assembly is provided on at least one cross beam 7. The groove width adjustment assembly includes an adjustable side plate parallel to the side wall of the cross beam 7 and an adjusting rod. The adjustable side plate extends transversely, the adjusting rod penetrates the cross beam 7 longitudinally, and the end of the adjusting rod is fixedly connected to the adjustable side plate. Preferably, a threaded assembly is provided between the adjustable rod and the cross beam 7 to ensure that the adjustable rod can push the adjustable side plate away from or close to the cross beam 7, thereby adjusting the width of the guiding groove. Further preferably, the groove width adjustment assemblies are provided on both cross beams 7.

[0039] More specifically, in a preferred embodiment of the present application, the groove width adjustment assembly further includes a plurality of guiding rods. The guiding rods penetrate the cross beam 7 longitudinally, and one end of the guiding rod is fixedly connected to the adjustable side plate. Preferably, the guiding rods are arranged in a rectangular array or a linear array on the longitudinal plane of the cross beam 7, thereby ensuring the accuracy of the longitudinal movement of the adjustable side plate.

[0040] Further, in a preferred embodiment of the present application, a rotating motor is provided at the end of the leg. The rotating shaft of the rotating motor is detachably connected to the horizontal support member to ensure that the rotating motor can drive the horizontal support member to rotate relative to the leg, thereby providing a stable movement guide for the hoisting mechanism.

[0041] Furthermore, in another preferred embodiment of the present application, both ends of the cross beam 7 are directly hinged to the top of the support legs. Meanwhile, during actual use, by directly driving the rotation of the lateral support member relative to the support legs, it is ensured that the lateral support member can be parallel to the horizontal plane. Preferably, a horizontal detection member is provided on the top end surface of the cross beam 7. Preferably, the horizontal detection member is a level, which is used to detect the levelness of the upper wing plate 8 of the cross beam 7.

[0042] Further preferably, in the preferred embodiment of the present application, a first locking assembly is provided at the detachable connection between the support legs and the cross beam 7. Preferably, the first locking assembly includes a positioning hole provided at the top of the support legs, a plurality of positioning grooves arranged at intervals along the circumference on the rotation shaft of the cross beam 7, and a positioning pin. During actual use, the cross beam 7 rotates relative to the support legs until the cross beam 7 rotates to be parallel to the horizontal plane. At this time, the positioning pin passes through the positioning hole and is embedded in the positioning groove, thereby realizing the rotation of the cross beam 7 relative to the support legs.

[0043] Furthermore, in the preferred embodiment of the present application, the support legs include a base and a telescopic column 1. The base includes a driving assembly and a limiting sleeve 2. The moving end of the driving assembly is located within the limiting sleeve 2. At the same time, one end of the telescopic column 1 is fixedly connected to the moving end of the driving assembly, and the other end of the driving assembly is detachably and rotatably connected to the lateral support member. Preferably, the driving assembly includes a hydraulic telescopic cylinder or a telescopic motor.

[0044] Further preferably, in the preferred embodiment of the present application, a second locking assembly 13 is also provided between the telescopic column 1 and the limiting sleeve 2 to ensure that after the telescopic column 1 completes the vertical telescopic movement, stable and reliable locking between the two can be achieved.

[0045] More specifically, in the preferred embodiment of the present application, the second locking assembly 13 includes a plurality of positioning holes penetrating the telescopic column 1 and the limiting sleeve 2 in the horizontal direction and a positioning pin. Among them, the plurality of positioning holes are evenly arranged at intervals along the extending direction of the telescopic column 1, thereby ensuring that the positioning pin can stably position the relative positions of the two.

[0046] Furthermore, in another preferred embodiment of the present application, the second locking assembly 13 includes a limiting block and a limiting tooth groove. Among them, the limiting block penetrates the outer wall surface of the limiting sleeve 2, and the end portion thereof facing the limiting sleeve 2 is provided with teeth that can be embedded in the limiting tooth groove. The limiting tooth groove is arranged on the outer wall surface of the telescopic column 1 along the extending direction of the telescopic column 1. During actual use, the telescopic column 1 moves relative to the limiting sleeve 2 in a telescopic manner, and after the telescopic movement is completed, by controlling the limiting block to be embedded in the limiting tooth groove, the convenient locking of the relative positions between the telescopic column 1 and the limiting sleeve 2 is completed. Preferably, a plurality of limiting teeth are provided on the limiting block.

[0047] Further preferably, in the preferred embodiment of the present application, a limiting hole with a square cross-section is provided in the limiting sleeve 2. Correspondingly, the telescopic strut is also a square rod. Preferably, limiting blocks are provided on each side wall surface of the limiting sleeve 2. Correspondingly, a number of limiting grooves are also provided on each side wall surface of the telescopic column 1.

[0048] Furthermore, in a specific preferred embodiment of the present application, the vertical support member includes two legs arranged at intervals along the longitudinal direction. During actual use, when the vertical support member is located on an inclined support surface, first, by adjusting the rotation of the cross beam 7 relative to the legs, the wing plates 8 on both cross beams 7 are kept in a horizontal state. Then, by adjusting the relative movement between the telescopic column 1 in the legs and the limiting sleeve 2, the wing plates 8 on both cross beams 7 are in a horizontal state. Finally, through the groove width adjustment assembly, the groove width between adjacent cross beams 7 can form a guide for the movement of the running mechanism.

[0049] Furthermore, in the preferred embodiment of the present application, the vertical support member further includes a support bottom plate 4 extending along the longitudinal direction, and the tops of its respective legs are detachably and fixedly installed at the top position of the support bottom plate 4 to enhance the anti-overturning ability of the support mechanism on the inclined support surface.

[0050] Further preferably, in the preferred embodiment of the present application, a number of lateral support rods 3 are provided between the legs and the support bottom plate 4, and both ends of each lateral support rod 3 are detachably connected to the legs and the support bottom plate 4 respectively, thereby enhancing the structural stability of the legs.

[0051] More specifically, in the preferred embodiment of the present application, a number of traction wheels 5 are provided on the bottom end surface of the support bottom plate 4, and at least one traction wheel 5 is provided with a traction motor 6 for driving the support mechanism to move stably in the horizontal plane. Preferably, a number of traction wheels 5 are arranged at intervals along the longitudinal direction on the bottom end surface of the support bottom plate 4. Further preferably, a traction wheel 5 is provided at each of the four corner positions on the bottom end surface of the support bottom plate 4.

[0052] Preferably, a locking assembly is provided on the support bottom plate 4 for stably fixing it on the support surface through this locking assembly after the support bottom plate 4 moves in place.

[0053] Furthermore, in the preferred embodiment of the present application, the running member includes a running bracket 9 and a number of running wheels 10. Each running wheel 10 is symmetrically arranged on both longitudinal sides of the running bracket 9, and at least one running wheel 10 is fixedly connected to the rotating shaft of the running motor to ensure that the running member can reciprocate horizontally in the guide groove.

[0054] Further preferably, in the preferred embodiment of the present application, the lifting assembly 11 includes a hoisting motor 12 fixed to the frame. Preferably, the hoisting motor 12 is a conical rotor brake asynchronous motor, which eliminates the external brake, has a compact structure, and at the same time, can achieve braking instantly when power is cut off, with relatively high safety. Further preferably, the lifting assembly 11 includes a load-bearing rope and a hook. The load-bearing rope is wound around the rotating shaft of the hoisting motor 12 and is used for vertically hoisting materials.

[0055] More specifically, in the preferred embodiment of the present application, the gantry crane further includes a controller 14, which is respectively connected to the hoisting motor 12, the traction motor 6, the traveling motor, and the driving assembly for controlling the movement of the gantry crane.

[0056] Further, in the preferred embodiment of the present application, the legs, the support base plate 4, the lateral support rods 3, and the cross beam 7 are connected to each other by flange bolts, ensuring the convenience of installation and disassembly of the gantry crane. And when the power of the hoisting motor 12 is insufficient, it can be assembled and disassembled conveniently, and then it is convenient to replace motors with different powers.

[0057] Further preferably, the main structure of the gantry crane is made of high-strength steel materials, which can not only ensure the structural strength, but also achieve the lightweight of the overall quality of the equipment, facilitating the rapid implementation and deployment of the equipment and safe construction.

[0058] The gantry crane suitable for low headroom hoisting in the present invention has stable support, convenient assembly, and good adaptability. By adopting a gantry crane overall structure that is conveniently detachable, users can quickly assemble and form it at the construction site. At the same time, by setting telescopic legs and a transverse support member rotatably arranged at the top of the legs, the height of the gantry crane can be flexibly adjusted according to the actual construction height. And in combination with the groove width adjustment assembly arranged on the cross beam 7, when the gantry crane is located on an inclined plane, not only can the wings 8 on the two cross beams 7 be aligned and parallel by means of the telescoping of the brackets and the rotation of the cross beam 7, but also the width of the guide groove can be adjusted by means of this groove width adjustment assembly, thereby ensuring that the guide groove can form a stable limit for the traveling member, further expanding the applicable range of the gantry crane. In addition, in combination with the longitudinally extending support base plate 4 arranged under the legs and the lateral support rods 3 arranged between the legs and the support base plate 4, not only the stability of the leg structure is improved, but also the anti-overturning ability of the entire gantry crane can be effectively improved, ensuring the safe operation of the hoisting operation, and having good promotion prospects and application value.

[0059] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gantry crane suitable for low headroom hoisting, used for hoisting materials on an inclined support surface in a low headroom environment, characterized in that, Comprising: A support mechanism, the support mechanism includes a horizontal support member and at least two vertical support members. The two vertical support members are arranged at intervals in the horizontal direction, and each vertical support member can reciprocally expand and contract perpendicular to the support surface; both ends of the horizontal support member are detachably and rotatably connected to the tops of the two vertical support members, and a guiding groove extending in the horizontal direction is provided on the top end surface of the horizontal support member. An opening penetrating the bottom of the groove is provided in the guiding groove. The opening extends in the horizontal direction, and the bottom surface of the guiding groove is always parallel to the horizontal plane; A lifting mechanism, the lifting mechanism includes a traveling member and a lifting member. The traveling member is arranged in the guiding groove, and the traveling member can reciprocally move along the guiding groove; the lifting member is detachably installed on the traveling member, and the lifting member includes a lifting assembly that can expand and contract vertically. The lifting assembly passes through the opening for vertically lifting materials.

2. The gantry crane suitable for low headroom hoisting according to claim 1, wherein, The vertical support member includes two legs arranged at intervals in the longitudinal direction, and the horizontal support member includes two cross beams arranged at intervals in the longitudinal direction. Both ends of the cross beam are detachably and rotatably connected to the legs of the two vertical support members.

3. The gantry crane suitable for low headroom hoisting according to claim 1, wherein, The vertical support member includes a leg extending in the vertical direction, and the horizontal support member includes two cross beams arranged at intervals in the longitudinal direction and connecting beams arranged at intervals in the horizontal direction. The two connecting beams are respectively fixedly installed at the ends of the cross beams to form a rectangular frame structure; the horizontal two ends of the rectangular frame structure are detachably and rotatably connected to the two legs.

4. The gantry crane suitable for low headroom hoisting according to claim 2 or 3, wherein, Wing plates extending in the horizontal direction are provided on the side walls of the two cross beams facing each other, and the adjacent wing plates are spaced apart in the horizontal direction to form the opening.

5. The gantry crane suitable for low headroom hoisting according to claim 2 or 3, wherein, A rotating motor is provided at the end of the leg, and the rotating shaft of the rotating motor is detachably connected to the horizontal support member.

6. The gantry crane suitable for low headroom hoisting according to claim 2 or 3, wherein, The vertical support member further includes a support bottom plate extending in the longitudinal direction, and the bottoms of the legs are detachably and fixedly installed on the top of the support bottom plate.

7. The gantry crane suitable for low headroom hoisting according to claim 6, wherein, A number of lateral support rods are provided between the legs and the support bottom plate, and both ends of each lateral support rod are respectively detachably connected to the legs and the support bottom plate.

8. The gantry crane suitable for low headroom hoisting according to claim 6, wherein, A number of traction wheels are provided on the bottom end surface of the support bottom plate, and at least one of the traction wheels is provided with a traction motor for driving the movement of the support mechanism.

9. The gantry crane suitable for low-headroom hoisting according to any one of claims 1 to 3, 7, and 8, wherein, The traveling member includes a traveling support and a number of traveling wheels. Each traveling wheel is symmetrically arranged on the longitudinal two sides of the traveling support for driving the traveling support to reciprocally move in the horizontal direction.

10. The gantry crane suitable for low headroom hoisting according to any one of claims 1 to 3, 7, and 8, wherein, The lifting member includes a conical rotor braking asynchronous motor.

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