Novel double-portal crane
By designing a new two-door crane, the sliding rails and lifting mechanisms are used to achieve flexible transportation of construction equipment, the coordination problems of multiple lifting facilities have been solved, construction efficiency and safety have been improved, and equipment conflicts and resource waste have been avoided.
Patent Information
- Application Number
- CN202422331457.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-24
AI Technical Summary
When excavating two pressure regulating wells, two lifting facilities are needed, resulting in equipment conflicts, waste of resources, increased safety risks and delayed construction progress.
A new two-door crane is designed, including a crane body and a slide rail supporting the movement of the crane body. The crane body transfers construction equipment through lifting mechanisms at both ends, and moves along the slide rail through walking components to avoid equipment interference and improve construction efficiency and safety.
Through the design of the new two-door crane, the location of construction equipment can be flexibly changed, construction efficiency and safety can be improved, equipment conflicts and resource waste can be reduced, and construction progress can be avoided.
Smart Images
Figure CN222974754U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gantry cranes, in particular to a novel double gantry crane. Background Art
[0002] When excavating a surge shaft, traditional gantry cranes have problems such as slow lifting speed, inconvenient movement, small transportation tonnage, and high technical requirements for operators when performing lifting tasks at the 25-ton level. At the same time, when excavating two surge shafts, two lifting facilities are required, and it is necessary to coordinate the operation of construction equipment. Otherwise, equipment conflicts, resource waste, increased safety risks, and construction progress delays will occur. Summary of the Invention
[0003] The technical problem to be solved by the utility model is that when excavating two surge shafts, two lifting facilities are required, and it is necessary to coordinate the operation of construction equipment. Otherwise, equipment conflicts, resource waste, increased safety risks, and construction progress delays will occur.
[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a novel double gantry crane, including a crane body and a slide rail for supporting the movement of the crane body. The crane body includes a gantry-type frame, a workbench fixed on the top of the frame, a hoisting mechanism arranged on the workbench, and a guiding pulley structure fixed at both ends of the top of the frame. The steel wire rope wound on the hoisting mechanism passes through the guiding pulley structure and is connected to a hook. Hoisting mechanisms are arranged at both ends of the frame, and a traveling assembly is arranged at the bottom end of the frame; the height and width of the inner channel of the frame are both greater than the height and width of the construction equipment.
[0005] Preferably, the guiding pulley structure includes a support frame obliquely connected to the end of the frame and a fixed pulley connected to the movable end of the support frame. The support frame is in a triangular structure, and reinforcing ribs are arranged in an S shape inside the support frame, and the bottom edge of the support frame is connected to the frame.
[0006] Preferably, a pull rod is connected between the top end of the frame and the middle of the side wall of the support frame, and both ends of the pull rod are connected by pins and ear plates.
[0007] Preferably, the hoisting mechanism includes a drum fixed on the workbench and a guiding wheel arranged between the drum and the guiding pulley structure. One end of the drum is connected with a reducer and a motor for driving. Two steel wire ropes are respectively wound at both ends of the drum, and the movable ends of the two steel wire ropes are connected to the hook after passing through the guiding wheel and the guiding pulley structure.
[0008] Preferably, the walking assembly includes rollers rotatably arranged at the bottom end of the frame and a driving device installed at the bottom end of the frame. The driving device includes a motor and a reducer connected in transmission. The output shaft of the reducer is connected to the mounting shaft of the roller, and an anchoring device cooperating with the slide rail is arranged on one side of the roller.
[0009] Preferably, the anchoring device includes a bolt vertically slidably arranged at the bottom end of the frame and an electric rail clamp. Support pillows are equidistantly arranged at the bottom of the slide rail, and an opening for inserting the bolt is formed at one end of the support pillow.
[0010] The utility model provides a novel double-gate crane. By arranging a slide rail along the tunnel, the slide rail supports the crane body, and at the same time, the crane body can slide along the slide rail. The hoisting mechanisms at both ends of the crane body are used for hoisting the construction equipment in the surge shaft, and the construction equipment can pass through the frame of the crane body without interference between the crane body and the construction equipment. The crane body can flexibly adjust the position of the construction equipment through the hoisting mechanisms at both ends, improving the construction efficiency and safety while facilitating the coordinated construction on site. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The following further describes the utility model with reference to the drawings and embodiments:
[0012] Figure 1 It is the front view of the construction state of the utility model.
[0013] Figure 2 It is the top view of the construction state of the utility model.
[0014] Figure 3 It is the side view of the structure of the embodiment of the utility model.
[0015] Figure 4 It is the front view of the structure of the embodiment of the utility model.
[0016] In the figure: 1, the first surge shaft; 2, the second surge shaft; 3, the crane body; 31, the frame; 32, the workbench; 33, the drum; 34, the guide wheel; 35, the support frame; 36, the pull rod; 37, the hook; 38, the walking assembly; 39, the anchoring device; 4, the slide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] As Figures 1-4As shown in the figure, the utility model provides a new type of double-gate crane, which includes a crane body 3 and a slide rail 4 for supporting the movement of the crane body 3. The crane body 3 includes a gantry-type frame 31, a workbench 32 fixed to the top of the frame 31, a hoisting mechanism arranged on the workbench 32, and guide pulley structures fixed to both ends of the top of the frame 31. The steel wire rope wound on the hoisting mechanism passes through the guide pulley structure and is connected to a hook 37. Hoisting mechanisms are arranged at both ends of the frame 31, and a traveling assembly 38 is arranged at the bottom end of the frame 31; the height and width of the inner channel of the frame 31 are both greater than the height and width of the construction equipment.
[0018] The hoisting motor in the hoisting mechanism adopts a variable-frequency speed-regulating three-phase asynchronous motor, with a motor voltage of 380V, a frequency of 50 - 100Hz, a protection grade of IP55 for the motor, an insulation grade of F, TH treatment, and meeting the heat dissipation requirements during low-speed operation. The reducer in the hoisting mechanism adopts hard tooth surface gear transmission, a horizontal reducer, and forced lubrication with thin oil in the reducer box. The service factor of the reducer according to the motor power is not less than 1.45, the safety factor for gear bending fatigue Sfmin≥1.5, and the safety factor for contact fatigue Shmin≥1.25. The gear machining accuracy is higher than 8 - 8 - 7 level. The noise measured 1m in front, behind, left, and right of the reducer after assembly is less than 85dB(A).
[0019] The steel wire rope model is 18 - 6※19W - 1670, that is, the steel wire rope diameter is φ18mm, it uses 6 strands of single-strand 19 W-type metal wire cores, the nominal tensile strength of the steel wire rope is selected as 1670MPa, the steel wire rope selects the anti-rotation series, and the safety factor n≥5.5.
[0020] A signal receiver is arranged on the crane body 3 for remote control through an external remote control device. When hoisting construction equipment, first control the anchoring device 39 in the traveling assembly 38 to release the connection between the roller and the slide rail 4, then control the traveling assembly 38 to move along the slide rail 4, so that one end of the crane body 3 moves above the construction equipment, control the hoisting mechanism of the crane body 3 to unwind the steel wire rope, so that under the steel wire rope, until the hook 37 touches the lifting ring of the construction equipment, connect the construction equipment through the hook 37, use the hoisting mechanism to lift the construction equipment. After the construction equipment is lifted to the set height, control the movement of the crane body 3 to drive the construction equipment to move. After the construction equipment moves to the set position, control the hoisting mechanism to lower the construction equipment. After the construction equipment completely falls, release the hook; then control the movement of the crane body 3 so that the crane body 3 straddles the construction equipment, and then lift the construction equipment through the hoisting mechanism at the other end of the crane body 3, and then transport the construction equipment through the slide rail 4 to another construction position (i.e., the hoisting between the first pressure regulating well 1 and the second pressure regulating well 2), and finally lower the construction equipment, that is, complete the hoisting.
[0021] A working brake and a safety brake are also installed in the hoisting mechanism. The working brake is a normally-closed electro-hydraulic block brake, which is installed on the high-speed shaft side of the hoisting mechanism. Its working mode is spring-energized braking and electro-hydraulic thruster-released braking, and the safety factor of the brake is not less than 1.75. The safety brake is a hydraulic disc brake, which is installed at the drum end, with a time-delay action. Its working mode is disc-spring-energized braking and hydraulic-released braking, and the safety factor of the brake is not less than 1.5. The brake includes a manual release device, which can manually operate the brake to release the brake when the equipment is powered off or under maintenance.
[0022] As Figures 1-4 shown. The guide pulley structure includes a support frame 35 obliquely connected to the end of the frame 31 and a fixed pulley connected to the movable end of the support frame 35. The support frame 35 is in a triangular structure, and reinforcing ribs are arranged in an S shape inside the support frame 35, and the bottom edge of the support frame 35 is connected to the frame 31. The overall support frame 35 is in an isosceles triangular structure, the bottom edge of the support frame 35 is fixedly connected to the frame 31, the overall support frame 35 is obliquely arranged, the movable end of the support frame 35 is the top end, a fixed pulley is arranged at the top end of the support frame 35, and the fixed pulleys are arranged in pairs and multiple groups are arranged, so that the steel wire rope passes between the two fixed pulleys in a pair to guide the steel wire rope. Reinforcing ribs in an S shape are arranged inside the support frame 35 to ensure the overall structural strength of the support frame 35.
[0023] As Figure 1 and Figure 4 shown. A pull rod 36 is connected between the top end of the frame 31 and the middle part of the side wall of the support frame 35, and both ends of the pull rod 36 are connected through pins and ear plates. The pull rod 36 provides support for the middle part of the support frame 35 to ensure the stability of the support frame 35.
[0024] As a preferred embodiment of the present invention. The hoisting mechanism includes a drum 33 fixed on the workbench 32 and a guide wheel 34 arranged between the drum 33 and the guide pulley structure. One end of the drum 33 is connected with a reducer and a motor for driving. Two steel wire ropes are respectively wound around both ends of the drum 33. The movable ends of the two steel wire ropes are connected to the hook 37 after passing through the guide wheel 34 and the guide pulley structure. Two steel wire ropes are connected to the hook 37, and the two steel wire ropes are respectively wound around both ends of the drum 33. The drum is driven to rotate by the reducer and the motor for synchronous winding and unwinding.
[0025] As Figure 3 and Figure 4As shown in the figure. The traveling assembly 38 includes rollers rotatably provided at the bottom end of the frame 31 and a driving device mounted at the bottom end of the frame 31. The driving device includes a motor and a reducer connected in transmission. The output shaft of the reducer is connected to the mounting shaft of the roller. An anchoring device 39 cooperating with the slide rail 4 is provided on one side of the roller. The roller is driven to rotate by the driving device. The slide rail 4 is made of an I-beam, and a limiting protrusion is axially provided in the middle of the top of the slide rail 4. An annular groove is provided in the middle of the roller. The annular groove cooperates with the limiting protrusion, and the driving device drives the roller to rotate to realize the movement of the crane body 3 on the slide rail 4.
[0026] As a preferred embodiment of the present invention. The anchoring device 39 includes a bolt vertically slidably provided at the bottom end of the frame 31 and an electric rail clamp. Support pillows are equidistantly provided at the bottom of the slide rail 4, and an opening for the bolt to be inserted is provided at one end of the support pillow. During the lifting operation, the connection between the bottom end of the frame 31 and the slide rail 4 is realized through the anchoring device 39 and the electric rail clamp. The bolt is pushed into the opening of the support pillow by an electric push rod, and then the slide rail 4 is clamped by the electric rail clamp to realize the fixed connection between the bottom end of the frame 31 and the slide rail 4.
Claims
1. A new type of double-gantry crane, characterized by: The crane body (3) comprises a crane body (3) and a slide rail (4) for supporting the movement of the crane body (3); the crane body (3) comprises a door-shaped frame (31), a workbench (32) fixed on the top of the frame (31), a lifting mechanism arranged on the workbench (32), and guide pulley structures fixed on both ends of the top of the frame (31); a steel wire rope wound on the lifting mechanism passes through the guide pulley structure and is connected to a hook (37); both ends of the frame (31) are provided with a lifting mechanism, and the bottom end of the frame (31) is provided with a walking assembly (38); the height and width of the inner channel of the frame (31) are greater than the height and width of the construction equipment.
2. A novel double-gantry crane as claimed in claim 1, characterized in that: The guide pulley structure comprises a support frame (35) obliquely connected to the end of the frame (31) and a fixed pulley connected to the movable end of the support frame (35); the support frame (35) is a triangular structure, and reinforcing ribs are arranged in an S shape inside the support frame (35); and the bottom edge of the support frame (35) is connected to the frame (31).
3. A novel double-gantry crane as claimed in claim 2, characterized in that: A pull rod (36) is connected between the top of the frame (31) and the middle of the side wall of the support frame (35), and both ends of the pull rod (36) are connected via a pin shaft and an ear plate.
4. A novel double-gantry crane as claimed in claim 1, characterized in that: The lifting mechanism comprises a drum (33) fixed on the workbench (32) and a guide wheel (34) arranged between the drum (33) and the guide pulley structure. One end of the drum (33) is connected to a reducer and a motor for driving. Two ends of the drum (33) are respectively wound with two steel wire ropes. The movable ends of the two steel wire ropes pass through the guide wheel (34) and the guide pulley structure and are connected to the hook (37).
5. A novel double-gantry crane as claimed in claim 1, characterized in that: The walking assembly (38) comprises a roller rotatably arranged at the bottom end of the frame (31) and a driving device installed at the bottom end of the frame (31), the driving device comprising a motor and a reducer in transmission connection, the output shaft of the reducer is connected to the mounting shaft of the roller, and an anchoring device (39) cooperating with the slide rail (4) is arranged on one side of the roller.
6. A novel double-gantry crane as claimed in claim 5, characterized in that: The anchoring device (39) comprises a latch and an electric rail clamp which are vertically slidably arranged at the bottom end of the frame (31); support pillows are equidistantly arranged at the bottom of the slide rail (4); and an opening is provided at one end of the support pillow for inserting the latch.