Bridge for hoisting equipment

Abstract

The utility model discloses a crane span structure for hoisting equipment, which comprises a support component, a beam frame and a balance structure, the beam frame comprises two end cross beams arranged at intervals along the longitudinal direction, and two main longitudinal beams arranged at intervals along the transverse direction, mounted at the top of the support component and connected with the two end cross beams; the main longitudinal beam is divided into a cantilever beam section and a balance beam section in the longitudinal direction through the supporting assembly, the balance structure is arranged at the end, away from the cantilever beam section, of the beam frame, and the longitudinal central axis of the cantilever beam section warps upwards in the direction from the balance beam section to the cantilever beam section. According to the utility model, the longitudinal central axis of the cantilever beam section warps upwards from the balance beam section to the cantilever beam section, so that the cantilever beam section has an upward trend in an initial state, and when the far end of the cantilever beam section is stressed and deformed, the far end of the cantilever beam section is not easy to incline to be lower than the horizontal plane due to a downward inclination trend generated by stress; therefore, the hoisting mechanism on the bridge frame for the hoisting equipment is prevented from being separated from the cantilever beam section, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a bridge frame for lifting equipment. Background Art

[0002] With the development of inland river shipping, the throughput of inland river ports and docks is increasing, and the berthing of cargo ships is becoming more frequent. At present, cranes are installed in cargo ports and docks, and the cranes are used to load and unload cargo on container ships and transport ships. The prior art discloses a crane, which includes a column and a cantilever beam. The cantilever beam is horizontally arranged at the upper end of the column, and a lifting mechanism is arranged on the cantilever beam. In the prior art, most of the cantilever beams are horizontally installed on the column. When the lifting mechanism lifts a heavy object and is at the far end of the cantilever beam, the far end of the cantilever beam is deformed by force and has a tendency to tilt downward. At this time, the lifting mechanism is prone to detach from the cantilever beam, which poses a great safety hazard. Utility Model Content

[0003] The utility model aims to provide a bridge frame for lifting equipment, so as to solve the problem in the prior art that the far end of the cantilever beam has a downward tilting tendency when subjected to force deformation, the lifting mechanism is easy to separate from the cantilever beam, and there is a safety hazard.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A bridge frame for lifting equipment includes a support assembly, a beam frame and a balance structure. The beam frame includes two end cross beams spaced apart along the longitudinal direction, and two main longitudinal beams spaced apart along the transverse direction and installed on the top of the support assembly and connecting the two end cross beams. The main longitudinal beam is divided into a cantilever beam section and a balance beam section along the longitudinal direction by the support assembly. The balance structure is arranged at one end of the beam frame away from the cantilever beam section, and the longitudinal center axis of the cantilever beam section is tilted from the balance beam section toward the cantilever beam section.

[0006] Preferably, the support assembly comprises two support frames respectively connected to the bottom ends of two main longitudinal beams; the longitudinal center axis of the main longitudinal beam is tilted from the balance beam section to the cantilever beam section.

[0007] Preferably, the top surface of the support frame has an inclined surface inclined upward from the balance beam section to the cantilever beam section, and the main longitudinal beam is arranged on the inclined surface; or, the support assembly also includes a support pad block arranged between the support frame and the main longitudinal beam, and the top surface of the support pad block has an inclined surface inclined upward from the balance beam section to the cantilever beam section.

[0008] Preferably, a prestressed cable with a downwardly arched middle portion is provided in the main longitudinal beam; and / or the angle between the bottom surface of the cantilever beam section and the horizontal plane is α, 0.5≦α≦0.6°.

[0009] Preferably, the balancing structure includes a counterweight box arranged on the balancing beam section of the two main longitudinal beams; and / or, the balancing structure includes two supporting columns, and the two supporting columns are respectively installed on one end of the balancing beam section of the two main longitudinal beams away from the cantilever beam section; and / or, the balancing structure includes at least one anchor pile connected to the main longitudinal beam / or the end cross beam through a cable.

[0010] Preferably, the counterweight box is slidably mounted on the balance beam section of the main longitudinal beam; and / or the support column and / or the support frame are connected to an external pedestal; and / or the support column has a hollow portion, which can be filled with a cementitious material; and / or a walking mechanism is provided at the bottom end of the support column and / or the support frame; and / or a sliding track is provided on the top surface of the main longitudinal beam along the longitudinal direction.

[0011] Preferably, a heating layer is sandwiched in the sliding track.

[0012] Preferably, the beam frame also includes auxiliary columns installed on the top of the two main longitudinal beams, and one of the auxiliary columns is provided with at least two tie assemblies respectively connected to the longitudinal ends of the main longitudinal beams, and the tie assembly includes at least two tie rods, and the ends of two adjacent tie rods are hingedly connected, and the other ends of the two tie rods located at the endmost ends are respectively hinged to the auxiliary column and the main longitudinal beam.

[0013] Preferably, the tie rod is connected to the main longitudinal beam via a length adjustment assembly; the length adjustment assembly comprises two threaded sleeves respectively hinged to the main longitudinal beam and the tie rod, and a double-headed adjustment screw connecting the two threaded sleeves, wherein the spiral directions of the double-headed adjustment screws are opposite.

[0014] Preferably, the threaded sleeve is provided with an observation window; and / or the double-headed adjusting screw is provided with a screwing portion on the middle outer wall; and / or the double-headed adjusting screw is threaded with locking nuts at both ends, and the locking nuts can tighten the threaded sleeve; and / or the two auxiliary columns are connected by a support beam.

[0015] Compared with the prior art, the beneficial effect of the utility model is that by setting the longitudinal center axis of the cantilever beam section to be tilted from the balance beam section toward the cantilever beam section, the cantilever beam section has an upward tendency in the initial state, and when the far end of the cantilever beam section is deformed by force, the far end of the cantilever beam section is not easy to tilt below the horizontal plane due to the downward tilting tendency caused by the force, thereby avoiding the lifting mechanism located on the bridge frame for the lifting equipment from detaching from the cantilever beam section, thereby improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a first bridge for lifting equipment disclosed in an embodiment of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure from another perspective;

[0019] Figure 4 A schematic diagram of the structure of a second bridge for lifting equipment disclosed in an embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a third bridge for lifting equipment disclosed in an embodiment of the utility model;

[0021] Figure 6 This is a schematic structural diagram of a fourth type of bridge for lifting equipment disclosed in an embodiment of the utility model.

[0022] In the figure: 1. Support assembly; 11. Support frame; 12. Support pad; 2. Beam frame; 21. End cross beam; 22. Main longitudinal beam; 221. Cantilever beam section; 222. Balance beam section; 223. Prestressed cable; 23. Auxiliary column; 24. Tie assembly; 241. Tie rod; 25. Length adjustment assembly; 251. Threaded sleeve; 252. Double-headed adjustment screw; 253. Locking nut; 254. Observation window; 26. Support beam; 3. Balance structure; 31. Support column; 32. Counterweight box; 33. Cable; 34. Anchor pile; 4. External pedestal; 5. Sliding track. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0025] Embodiment 1

[0026] like Figure 1 and 3As shown, the bridge frame for lifting equipment provided in this embodiment includes a support component 1, a beam frame 2 and a balance structure 3. The beam frame 2 includes two end cross beams 21 arranged at intervals along the longitudinal direction, and two main longitudinal beams 22 arranged at intervals along the transverse direction and installed on the top of the support component 1 and connecting the two end cross beams 21; the main longitudinal beam 22 is divided into a cantilever beam section 221 and a balance beam section 222 along the longitudinal direction by the support component 1, and the balance structure 3 is arranged at one end of the beam frame 2 away from the cantilever beam section 221, and the longitudinal center axis of the cantilever beam section 221 is tilted from the balance beam section 222 to the cantilever beam section 221.

[0027] Specifically, by setting the longitudinal center axis of the cantilever beam segment 221 to be tilted from the balancing beam segment 222 toward the cantilever beam segment 221, the cantilever beam segment 221 has an upward tendency in the initial state. When the far end of the cantilever beam segment 221 (the end of the cantilever beam segment 221 away from the self-balancing beam segment 222) is deformed by force, the far end of the cantilever beam segment 221 is not easy to tilt below the horizontal plane due to the downward tilting tendency generated by the force, thereby avoiding the lifting mechanism located on the bridge for lifting equipment from detaching from the cantilever beam segment 221, thereby improving the safety performance; it can be understood that the cantilever beam segment 221 has a certain deformation reset function, and when the force acting on the far end of the cantilever beam segment 221 is cancelled, the cantilever beam segment 221 can resume its upward tilt.

[0028] Furthermore, if Figure 3 As shown, the support assembly 1 includes two support frames 11 respectively connected to the bottom ends of the two main longitudinal beams 22; the longitudinal center axis of the main longitudinal beam 22 is tilted from the balance beam section 222 to the cantilever beam section 221; wherein, the longitudinal center axis of the main longitudinal beam 22 is tilted from the balance beam section 222 to the cantilever beam section 221, and the longitudinal center axis of the main longitudinal beam 22 can be gradually tilted upward from the balance beam section 222 to the cantilever beam section 221, or the longitudinal center axis of the main longitudinal beam 22 can be bent upward from the balance beam section 222 to the cantilever beam section 221; it can be understood that the main longitudinal beam 22 can be tilted as a whole or only the cantilever beam section 221 can be tilted, without specific limitation.

[0029] Furthermore, in order to ensure that the main longitudinal beam 22 can be tilted upward, the top surface of the support frame 11 has an inclined surface inclined upward from the balance beam section 222 to the cantilever beam section 221, and the main longitudinal beam 22 is arranged on the inclined surface; preferably, the support assembly 1 also includes a support pad 12 arranged between the support frame 11 and the main longitudinal beam 22, and the top surface of the support pad 12 has an inclined surface inclined upward from the balance beam section 222 to the cantilever beam section 221. Since the contact part between the main longitudinal beam 22 and the support pad 12 is easily deformed by force, the support pad 12 needs to be replaced during long-term use. Preferably, the support pad 12 is connected to the support frame 11 and the main longitudinal beam 22 by bolts.

[0030] Furthermore, if Figure 4As shown, in order to improve the deformation restoration ability of the main longitudinal beam 22 , a prestressed cable 223 with a downward arched middle portion is provided in the main longitudinal beam 22 ; when prestress is applied to both ends of the prestressed cable 223 , the prestressed cable 223 will provide an upward prestress to the main longitudinal beam 22 .

[0031] Furthermore, if Figure 3 As shown, the angle between the bottom surface of the cantilever beam section 221 and the horizontal plane is α, 0.5≦α≦0.6°; at this time, the upward angle of the main longitudinal beam 22 is small and does not affect the normal movement of the lifting mechanism.

[0032] Furthermore, in order to maintain the balance of the beam frame 2, as Figure 6 As shown, the balancing structure 3 includes a counterweight box 32 arranged on the balance beam section 222 of the two main longitudinal beams 22; wherein, there may be multiple counterweight boxes 32 and they are respectively installed on the balance beam sections 222 of the main longitudinal beams 22; of course, there may also be one counterweight box 32 and it is arranged across the two main longitudinal beams 22. The specific installation position and number of the counterweight boxes 32 are selected according to actual needs and are not elaborated here. Preferably, the counterweight box 32 is slidably installed on the balance beam section 222 of the main longitudinal beam 22, and the position of the counterweight box 32 can be automatically adjusted according to the position of the lifting mechanism. It can be understood that the balancing structure 3 is not limited to the counterweight box 32, and other structures can also be adopted, for example: Figure 1 , Figure 2 and Figure 4 As shown, the balancing structure 3 includes two supporting columns 31, and the two supporting columns 31 are respectively installed at one end of the balancing beam section 222 of the two main longitudinal beams 22 away from the cantilever beam section 221; preferably, in order to save materials and ensure the stability of the beam frame 2, the supporting columns 31 have a hollow part, and the hollow part can be filled with cementitious material; or, as Figure 5 As shown, the balancing structure 3 includes at least one anchor pile 34 connected to the main longitudinal beam 22 / or the end cross beam 21 through a cable 33. In addition, the above-mentioned balancing structures 3 can also be used in combination without interfering with each other to further improve the stability of the beam frame 2; the specific structure of the balancing structure 3 is not limited as long as it can meet the use requirements.

[0033] Furthermore, if Figure 5 As shown, when the bridge for lifting equipment is in a specific position and remains unchanged, the supporting columns 31 and / or the supporting frame 11 can also be connected to the external pedestal 4 to further improve the stability of the beam frame 2; of course, when the bridge for lifting equipment needs to change position frequently, the supporting columns 31 and / or the supporting frame 11 are provided with a walking mechanism at the bottom end, and the walking mechanism is provided to facilitate the movement of the bridge for lifting equipment.

[0034] Furthermore, if Figure 1As shown, a sliding track 5 is longitudinally arranged on the top surface of the main longitudinal beam 22, and the sliding track 5 is used to connect the lifting mechanism, and the lifting mechanism slides on the sliding track 5 to achieve lifting and transportation. Since the bridge for lifting equipment is mostly set outdoors, when there is extreme weather of ice and snow, it is difficult to remove snow on the sliding track 5, which affects the normal operation of the lifting mechanism. By sandwiching a heating layer in the sliding track 5, the heating layer is a heating resistor. When snow removal is required, the heating layer is energized, and the heat generated by the heating layer melts the ice and snow to ensure the normal operation of the lifting mechanism.

[0035] Furthermore, in order to further improve the stability of the bridge for lifting equipment and further improve the deformation restoration ability of the main longitudinal beam 22; Figure 1 As shown, the beam frame 2 also includes an auxiliary column 23 installed on the top of the two main longitudinal beams 22, and one auxiliary column 23 is provided with at least two tie assemblies 24 respectively connected to the longitudinal ends of the main longitudinal beam 22, and the tie assembly 24 includes at least two tie rods 241, and the ends of two adjacent tie rods 241 are hingedly connected, and the other ends of the two tie rods 241 located at the end are respectively hinged to the auxiliary column 23 and the main longitudinal beam 22; by providing at least two tie rods 241 to replace the original tie rope, it is avoided that the tie rod 241 produces a large deflection deformation, and the deformation resistance of the tie assembly 24 is improved; it can be understood that the cantilever beam section 221 is subjected to a large force. In order to ensure that the cantilever beam section 221 does not undergo a large deformation, at least two tie assemblies 24 are provided on the cantilever beam section 221.

[0036] Furthermore, if Figure 1 and Figure 2 As shown, the tie rod 241 is connected to the main longitudinal beam 22 via a length adjustment assembly 25; the length adjustment assembly 25 includes two threaded sleeves 251 respectively hinged to the main longitudinal beam 22 and the tie rod 241, and a double-headed adjustment screw 252 connecting the two threaded sleeves 251, and the spiral directions of the double-headed adjustment screws 252 are opposite.

[0037] Specifically, the tightness of the tie-binding assembly 24 is adjusted by setting the length adjustment assembly 25, and the specific operation is as follows: according to the actual adjustment requirements, the double-headed adjustment screw 252 is screwed, and at this time, the two threaded sleeves 251 can move simultaneously in the direction close to the double-headed adjustment screw 252, so as to achieve the purpose of tensioning the tie-binding assembly 24; or, the double-headed adjustment screw 252 is screwed, and at this time, the two threaded sleeves 251 can move simultaneously in the direction away from the double-headed adjustment screw 252, so as to achieve the purpose of loosening the tie-binding assembly 24.

[0038] Furthermore, if Figure 2 As shown, the threaded sleeve 251 is provided with an observation window 254. By providing the observation window 254, the assembly degree of the double-headed adjusting screw 252 and the threaded sleeve 251 can be visually seen to avoid excessive assembly.

[0039] Furthermore, if Figure 2 As shown, the double-headed adjusting screw 252 is provided with a screwing portion on the middle outer wall, and the screwing portion is provided to provide a force application position for the installation of the double-headed adjusting screw 252.

[0040] Furthermore, if Figure 2 As shown, the double-headed adjusting screw 252 has locking nuts 253 threadedly connected at both ends, and the locking nuts 253 can press against the threaded sleeve 251. The locking nuts 253 are provided to prevent the double-headed adjusting screw 252 from being over-assembled after being stressed.

[0041] Furthermore, if Figure 1 As shown, the two auxiliary columns 23 are connected by a support beam 26 . By providing the support beam 26 , the two auxiliary columns 23 are connected as a whole, thereby improving the force-bearing performance of the auxiliary columns 23 .

[0042] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A bridge for lifting equipment, characterized in that: It includes a support component, a beam frame and a balance structure. The beam frame includes two end cross beams arranged at intervals along the longitudinal direction, and two main longitudinal beams arranged at intervals along the transverse direction and installed on the top of the support component and connecting the two end cross beams; the main longitudinal beam is divided into a cantilever beam section and a balance beam section along the longitudinal direction by the support component, and the balance structure is arranged at one end of the beam frame away from the cantilever beam section, and the longitudinal center axis of the cantilever beam section is tilted from the balance beam section to the cantilever beam section.

2. The bridge for lifting equipment according to claim 1, characterized in that: The support assembly comprises two support frames respectively connected to the bottom ends of two main longitudinal beams; the longitudinal center axis of the main longitudinal beam is tilted from the balance beam section to the cantilever beam section.

3. The bridge for lifting equipment according to claim 2, characterized in that: The top surface of the support frame has an inclined surface that slopes upward from the balance beam section to the cantilever beam section, and the main longitudinal beam is arranged on the inclined surface; Alternatively, the support assembly further comprises a support pad block disposed between the support frame and the main longitudinal beam, wherein a top surface of the support pad block comprises an inclined surface inclined upward from the balance beam section to the cantilever beam section.

4. The bridge for lifting equipment according to any one of claims 1 to 3, characterized in that: The main longitudinal beam is provided with a prestressed cable with a downwardly arched middle portion; And / or, the angle between the bottom surface of the cantilever beam section and the horizontal plane is α, 0.5≦α≦0.6°.

5. The bridge for lifting equipment according to claim 2 or 3, characterized in that: The balancing structure comprises a counterweight box provided at the balancing beam section of the two main longitudinal beams; And / or, the balancing structure comprises two supporting columns, and the two supporting columns are respectively installed at one end of the balancing beam section of the two main longitudinal beams away from the cantilever beam section; And / or, the balancing structure includes at least one anchor pile connected to the main longitudinal beam and / or the end cross beam via a cable.

6. The bridge for lifting equipment according to claim 5, characterized in that: The counterweight box is slidably mounted on the balance beam section of the main longitudinal beam; And / or, the support column and / or the support frame are connected to an external support platform; And / or, the supporting column has a hollow portion, and the hollow portion can be filled with a cementitious material; And / or, the supporting column and / or the bottom end of the supporting frame is provided with a walking mechanism; And / or, a sliding track is arranged on the top surface of the main longitudinal beam along the longitudinal direction.

7. The bridge for lifting equipment according to claim 6, characterized in that: A heating layer is sandwiched in the sliding track.

8. The bridge for lifting equipment according to claim 5, characterized in that: The beam frame also includes auxiliary columns installed on the top of the two main longitudinal beams, one of the auxiliary columns is provided with at least two tie assemblies respectively connected to the longitudinal ends of the main longitudinal beam, the tie assembly includes at least two tie rods, the ends of two adjacent tie rods are hingedly connected, and the other ends of the two tie rods located at the end are respectively hinged to the auxiliary column and the main longitudinal beam.

9. The bridge for lifting equipment according to claim 8, characterized in that: The tie rod is connected to the main longitudinal beam via a length adjustment component; The length adjustment assembly comprises two threaded sleeves respectively hinged to the main longitudinal beam and the tie rod, and a double-headed adjustment screw connecting the two threaded sleeves, wherein the spiral directions of the double-headed adjustment screw are opposite.

10. The bridge for lifting equipment according to claim 9, characterized in that: The threaded sleeve is provided with an observation window; And / or, the double-headed adjusting screw is provided with a screwing portion on the middle outer wall; And / or, the double-ended adjusting screw is threaded with locking nuts at both ends, and the locking nuts can be pressed against the threaded sleeve; And / or, the two auxiliary columns are connected by a support beam.

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