Articulated multi-pivot crane

Abstract

The utility model relates to a kind of articulated multi-support point cranes, including segmented girder, the top of segmented girder is equipped with several end beams, end beam travels in the lower part of track by trolley frame, segmented girder includes middle girder, the both ends of middle girder are hinged with outer girder, the both sides of the top of middle girder are fixedly connected with the horizontally arranged tab, the end of outer girder top and tab is close and is fixedly connected with the horizontally arranged recessed plate, tab and recessed plate are matched, tab is inserted into recessed plate recessed groove, end beam in middle position is hinged with outer girder, end beam located in outer side is rigidly connected with outer girder.

Description

Technical Field

[0001] This utility model relates to the field of cranes, specifically to a hinged multi-point crane. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. In manufacturing, KBK rails, tool rails, and aluminum alloy rails are generally used. However, according to the layout design and process flow requirements of automobile manufacturing workshops, large-span cranes are required for conveying in automobile production lines, assembly lines, and cross-regional sorting lines. Therefore, multi-point cranes are needed. Multi-point cranes have a large span, and when multiple trolley frames travel along the rails, there is insufficient uniform force distribution and wheel slippage, which can lead to safety hazards. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an articulated multi-point crane.

[0004] The technical solution of this utility model is implemented as follows: A hinged multi-support crane includes a segmented main beam, with several end beams installed on the top of the segmented main beam. The end beams travel on the lower part of the track via a trolley frame. The segmented main beam includes a middle main beam, with outer main beams hinged to both ends of the middle main beam. Horizontally arranged convex plates are fixedly connected to both sides of the top of the middle main beam. A horizontally arranged concave plate is fixedly connected to the top of the outer main beam near the convex plate. The convex plate and the concave plate cooperate, with the protrusion of the convex plate inserted into the groove of the concave plate. The end beams in the middle position are hinged to the outer main beams, and the end beams on the outer side are rigidly connected to the outer main beams.

[0005] The ends of the two outer main beams near the middle main beam are open structures. The two ends of the middle main beam are inserted into the openings of the two outer main beams. The outer main beams and the middle main beams are hinged together by a connecting shaft.

[0006] Several mounting seats are fixedly installed on the top of the outer main beam. The mounting seats are rigidly connected to the end beam in the middle position through two connecting shafts, and the mounting seats are hinged to the outer end beam through one connecting shaft.

[0007] Each end beam has a fixedly connected trolley frame at intervals. The two trolley frames are the active trolley frame and the driven trolley frame. Each trolley frame includes two trolley frame plates connected by double-headed screws. The two trolley frame plates are installed on both sides of the end beam. Two traveling wheels are installed on the outer side of each trolley frame plate. The traveling wheels travel on the track. A drive motor is installed on the trolley frame plate of the active trolley frame.

[0008] The active trolley frame has placement slots on both sides of the trolley frame plate. Horizontal wheels are installed in the placement slots. The horizontal wheels are rotatably connected to the vertical shaft. The vertical shaft is installed on the trolley frame plate by double-headed bolts.

[0009] The technical solution of this utility model has the following positive effects: The middle main beam of this utility model is hinged to the two outer main beams, so that the segmented main beams maintain the elasticity of the steel structure in the upper and lower parts, and the wheels will not slip due to excessive rigidity of the main beams. The two outer main beams and the middle main beam are connected by concave and convex plates, so that the segmented main beams have no relative displacement in the horizontal direction. The end beam in the middle position is rigidly connected, so that the end beam and the outer main beam are stably integrated. The outer end beams are single-axis hinged, so that the outer end beams can move up and down along the axis. The top of the same outer main beam is rigidly connected to one end beam and hinged to another end beam. During use, the wheel assembly can maintain balanced force and maintain good driving synchronization of multiple end beams. Attached Figure Description

[0010] Figure 1 This is the main structural view of the present invention.

[0011] Figure 2 This is a top view of the structure of this utility model.

[0012] Figure 3 This is the main view showing the connection between the convex and concave plates.

[0013] Figure 4 This is a top view showing the connection between the convex and concave plates.

[0014] Figure 5 This is a schematic diagram of the rigid connection structure between the mounting base and the end beam.

[0015] Figure 6 This is a schematic diagram of the hinged connection structure between the mounting base and the end beam.

[0016] Reference numerals in the attached diagram: 1. Segmented main beam; 2. End beam; 3. Intermediate main beam; 4. Outer main beam; 5. Convex plate; 6. Concave plate; 7. Connecting shaft one; 8. Mounting seat; 9. Connecting shaft two; 10. Track; 11. Trolley frame plate; 12. Traveling wheel; 13. Drive motor; 14. Placement slot; 15. Horizontal wheel; 16. Vertical shaft. Detailed Implementation

[0017] like Figure 1-6As shown, a hinged multi-point crane includes a segmented main beam 1, an electric hoist traveling on the bottom of the segmented main beam 1, and several end beams 2 installed on the top of the segmented main beam 1. The end beams 2 travel on the lower part of the track 10 via a trolley frame. The segmented main beam 1 includes a middle main beam 3, with outer main beams 4 hinged to both ends of the middle main beam 3. Horizontally arranged protruding plates 5 are fixedly connected to both sides of the top of the middle main beam 3. A horizontally arranged concave plate 6 is fixedly connected to the top of the outer main beam 4 near the protruding plate 5. The protruding plate 5 and the concave plate 6 cooperate with each other, with the protrusion of the protruding plate 5 inserted into the groove of the concave plate 6. The end beams 2 in the middle position are hinged to the outer main beams 4, and the end beams 2 on the outer side are rigidly connected to the outer main beams 4.

[0018] Specifically, the outer end beam 2 is rigidly connected to the outer main beam 4, keeping the main beam and the end beam stable as one unit. The middle end beam 2 is hinged to the outer main beam 4, allowing the middle end beam to move up and down along the axis. The concave plate and convex plate ensure that there is no relative displacement between the middle main beam and the outer main beam in the horizontal direction.

[0019] The ends of the two outer main beams 4 near the middle main beam 3 are open structures. The two ends of the middle main beam 3 are inserted into the openings of the two outer main beams 4. The outer main beams 4 and the middle main beam 3 are hinged together by a connecting shaft 7. Specifically, the connecting shaft 7 enables the two outer main beams 4 and the middle main beam 3 to maintain the elasticity of the steel structure from top to bottom.

[0020] Several mounting seats 8 are fixedly installed on the top of the outer main beam 4. The mounting seats 8 are rigidly connected to the end beam 2 in the middle position through two connecting shafts 9. The mounting seats 8 are hinged to the outer end beam through one connecting shaft 9. Specifically, the end beam 2 in the middle position adopts a double-axis rigid connection to keep the main beam and the end beam stable as one unit. The outer end beam adopts a single-axis hinge, so that the end beam can move up and down along the axis. According to the deformation calculation of the main beam, it does not exceed 10mm.

[0021] The top of the end beam 2 is fixedly connected with a spaced-apart trolley frame. The two trolley frames are the active trolley frame and the driven trolley frame, respectively. The trolley frame includes two trolley frame plates 11 connected by double-headed screws. The two trolley frame plates 11 are installed on both sides of the end beam 2. Two traveling wheels 12 are installed on the outer side of the two trolley frame plates 11. The traveling wheels 12 travel on the track 10. The drive motor 13 is installed on the trolley frame plate 11 of the active trolley frame.

[0022] Specifically, the drive motor 13 starts, the active trolley frame moves along the track 10, and drives the driven trolley frame to move along the track 10.

[0023] The active trolley frame plate 11 has placement slots 14 on both sides, and horizontal wheels 15 are installed in the placement slots 14. The horizontal wheels 15 are rotatably connected to the vertical shaft 16, and the vertical shaft 16 is installed on the trolley frame plate 11 by double-headed bolts.

[0024] Specifically, the horizontal wheel 15 serves as a guide to prevent the trolley frame from deviating when traveling along the track 10.

[0025] The working process is as follows: the drive motor 13 of the active trolley frame on the end beam 2 starts, driving the end beam 2 to move back and forth along the track 10. The bottom of the end beam 2 is installed on the top surface of the outer main beam 4, thereby driving the segmented main beam 1 to move back and forth along the track 10, and the electric hoist moves left and right along the segmented main beam 1.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An articulated multi-point crane comprising a segmented main beam, the top of the segmented main beam mounting a number of end beams, the end beams travelling on the lower part of the track by means of a trolley frame, characterised in that: The segmented main beam includes a middle main beam, with outer main beams hinged to both ends of the middle main beam. Horizontally arranged convex plates are fixedly connected to both sides of the top of the middle main beam. A horizontally arranged concave plate is fixedly connected to the top of the outer main beam near the convex plate. The convex and concave plates cooperate with each other, with the protrusion of the convex plate inserted into the groove of the concave plate. The end beam in the middle position is hinged to the outer main beam, and the end beam on the outer side is rigidly connected to the outer main beam.

2. A hinged multi-legged crane according to claim 1, characterized in that: The ends of the two outer main beams near the middle main beam are open structures. The two ends of the middle main beam are inserted into the openings of the two outer main beams. The outer main beams and the middle main beams are hinged together by a connecting shaft.

3. A hinged multi-legged crane according to claim 2, characterized in that: Several mounting seats are fixedly installed on the top of the outer main beam. The mounting seats are rigidly connected to the end beam in the middle position through two connecting shafts, and the mounting seats are hinged to the outer end beam through one connecting shaft.

4. A hinged multi-point crane according to claim 3, characterized in that: Each end beam has a fixedly connected trolley frame at intervals. The two trolley frames are the active trolley frame and the driven trolley frame. Each trolley frame includes two trolley frame plates connected by double-headed screws. The two trolley frame plates are installed on both sides of the end beam. Two traveling wheels are installed on the outer side of each trolley frame plate. The traveling wheels travel on the track. A drive motor is installed on the trolley frame plate of the active trolley frame.

5. A hinged multi-point crane according to claim 3, characterized in that: The active trolley frame has placement slots on both sides of the trolley frame plate. Horizontal wheels are installed in the placement slots. The horizontal wheels are rotatably connected to the vertical shaft. The vertical shaft is installed on the trolley frame plate by double-headed bolts.

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