Detachable portable portal crane

Abstract

The invention relates to a detachable portable portal crane, relates to the technical field of electric power construction equipment, and aims to solve the problems that pulling force is consumed and potential safety hazards are large when a protection cabinet is manually carried. The detachable portable portal crane comprises two groups of supporting legs and a cross beam arranged at the tops of the two groups of supporting legs, and a plurality of groups of turning wheels for moving are arranged at the bottoms of the supporting legs; a hoisting assembly is arranged on the cross beam and is used for hoisting goods; and a connecting assembly is arranged between the cross beam and each group of supporting legs and is used for fixedly connecting the cross beam and the supporting legs. The effect of conveniently moving the protection cabinet is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electric power construction equipment, and in particular to a detachable portable gantry crane. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range.

[0003] In the related art, when the protection cabinet of the secondary room of a 110kV substation needs to be put in place, since the bottom of the secondary room is an overhead foundation, which is usually 50 centimeters above the ground level, and the protection cabinet is usually light in weight, manual lifting and transportation is adopted during on-site construction.

[0004] With respect to the above-mentioned related technologies, the inventors found that the manual transportation of the protective cabinet is labor-intensive and has great potential safety hazards, so it needs to be improved. Summary of the invention

[0005] In order to facilitate the movement of the protection cabinet, the present application provides a detachable portable gantry crane.

[0006] The present application provides a detachable portable gantry crane adopts the following technical solution: A detachable portable gantry crane comprises two groups of supporting legs and a crossbeam arranged on the top of the two groups of supporting legs, wherein a plurality of groups of changing wheels for movement are arranged at the bottom of the supporting legs; a hoisting assembly is arranged on the crossbeam for hoisting goods; a connecting assembly is arranged between the crossbeam and each group of supporting legs for fixedly connecting the crossbeam and the supporting legs.

[0007] By adopting the above technical solution, the connecting component realizes the detachable connection between the crossbeam and the support leg, so as to facilitate the disassembly, movement and storage of the crane; the lifting component is used to lift the goods to ensure the normal lifting function of the crane; the changing wheel facilitates the transfer of the entire equipment after lifting the goods.

[0008] Preferably, the lifting assembly includes a fixed pulley, a guide wheel, a hook, a traction rope and a winch; the fixed pulley is arranged on the beam, the guide wheel is arranged at one end of the beam in the length direction, the hook is arranged on the fixed pulley, the traction rope is passed through the guide wheel and the fixed pulley, and is connected to the hook; the winch is arranged on a support leg close to the guide wheel for winding and unwinding the traction rope.

[0009] By adopting the above technical solution, the fixed pulley and the guide wheel guide and limit the moving path of the traction rope, the winch reels and unwinds the traction rope, and cooperates with the hook to hook the goods to achieve the lifting and lowering of the goods, thereby realizing the lifting of the goods and convenient transportation.

[0010] Preferably, the connecting assembly includes columns, fixed plates, connecting plates and connecting pieces; the columns are arranged at both ends of the beam in the length direction, and the fixed plates are arranged at the bottom of each group of columns; the connecting plates are arranged at the top of each group of legs, and the fixed plates and connecting plates are arranged in one-to-one correspondence; the connecting pieces are passed through the corresponding fixed plates and connecting plates for fixedly connecting the fixed plates and connecting plates.

[0011] By adopting the above technical solution, the fixed plate and the connecting plate are fitted and docked, and the fixed plate and the connecting plate are connected and fixed by using connecting parts, so as to realize the rapid assembly and fixation of the beam and the supporting leg; when the beam and the supporting leg need to be disassembled, the connecting parts are disassembled to separate the fixed plate and the connecting plate, so as to facilitate the convenient disassembly of the beam and the supporting leg, thereby realizing the convenient disassembly and assembly of the overall device and improving convenience.

[0012] Preferably, the crossbeam is provided with a moving assembly for driving the fixed pulley to move along the length direction of the crossbeam, and the supporting foot is provided with a lifting assembly for driving the crossbeam to move up and down.

[0013] By adopting the above technical solution, the moving component drives the fixed pulley to move along the length direction of the beam, so as to move the goods hoisted by the fixed pulley, thereby facilitating the adjustment of the position of the goods; the lifting component adjusts the height of the beam to facilitate the transportation of goods at different heights, thereby improving the practicality of the overall device.

[0014] Preferably, the moving assembly includes a moving screw, a moving block and a moving motor; the moving screw is rotatably arranged on a crossbeam, the moving block is sleeved on the moving screw, and the moving block is threadedly connected to the moving screw; the moving block is connected to a fixed pulley, and the moving block is slidably connected to the crossbeam; the moving motor is arranged on the crossbeam to drive the moving screw to rotate.

[0015] By adopting the above technical solution, the output end of the mobile motor drives the mobile screw to rotate, and the rotating mobile screw drives the mobile block, so that the mobile block drives the fixed pulley to move, thereby facilitating the movement of the goods hoisted by the hook.

[0016] Preferably, the support leg includes a base and a lifting rod, the base is connected to the changing wheel, the lifting rod is connected to the connecting assembly, and the lifting rod is slidably inserted into the base; the lifting assembly includes a lifting screw and a lifting motor; the lifting screw is rotatably arranged inside the base, and the lifting screw is threadedly connected to the lifting rod; the lifting motor is arranged inside the base to drive the lifting screw to rotate.

[0017] By adopting the above technical solution, the output end of the lifting motor drives the lifting screw to rotate, and the rotating lifting screw drives the lifting rod, so that the lifting rod drives the beam to move up and down to adjust the height position of the beam.

[0018] Preferably, a mounting ring groove is provided on the top of the base around the lifting rod, and a sealing ring tightly attached to the lifting rod is provided inside the mounting ring groove of the base; a plurality of positioning protrusions that abut against the sealing ring are provided on the side wall of the lifting rod at intervals along the height direction of the lifting rod, and a clearance notch connected to the inside of the mounting ring groove is provided inside the base for the positioning protrusion to slide into.

[0019] By adopting the above technical solution, the sealing ring is placed inside the mounting ring groove, so that the lifting rod fits snugly with the inner wall of the base, so as to limit and guide the moving direction of the lifting rod; The sealing ring fits around the lifting rod, forming an airtight space between the inside of the base and the bottom of the lifting rod; when the lifting rod moves slowly, the positioning protrusion moves inside the gap, and the positioning protrusion contacts the sealing ring, causing the sealing ring to elastically deform; at this time, the air inside the airtight space is normally exchanged with the outside air to achieve the normal movement of the lifting rod, thereby ensuring the lifting and moving needs of the lifting rod; when the thread between the lifting rod and the lifting screw fails, the weight of the goods carried by the beam drives the lifting rod to move quickly toward the inside of the base. At this time, the air inside the airtight space cannot interact with the outside air in time, thereby increasing the air pressure inside the airtight space to support and cushion the lifting rod and the beam, reducing the phenomenon of goods falling and injuring people due to the failure of the lifting rod thread, thereby ensuring the operational safety of the overall device.

[0020] Preferably, a vent is formed through the side wall of the base, a fastening rod is threadedly connected to the inside of the vent, a knob is provided at one end of the fastening rod, and a sealing plug for sealing the vent is provided at the other end of the fastening rod.

[0021] By adopting the above technical solution, when the lifting rod needs to be quickly raised or lowered, the fastening rod and the sealing plug are taken out of the vent, and the air inside the base and the outside can be exchanged through the vent, so as to facilitate the rapid movement of the lifting rod; when the lifting rod is moved, the fastening rod and the sealing plug can be rotated into the vent through the knob to close the vent, so that a closed airtight space is formed between the inside of the base and the bottom of the lifting rod, so as to ensure the safety of the entire device.

[0022] Preferably, each of the supporting legs is rotatably provided with two sets of rotating shafts, each of the rotating shafts is provided with an auxiliary rod, and each auxiliary rod has a universal wheel at the bottom, and the supporting legs are provided with a driving assembly for synchronously unfolding and storing the auxiliary rod.

[0023] By adopting the above technical solution, the driving component drives the auxiliary rod to be synchronously unfolded and stored. After the auxiliary rod is unfolded, the universal wheel is used to assist in supporting the support leg, thereby reducing the threat of the support leg causing the cargo to tip over, and ensuring the stability of the entire device during operation; after the auxiliary rod is stored, the overall footprint of the support leg and the auxiliary rod is reduced, so that the entire device can be easily stored.

[0024] Preferably, the driving assembly includes a driving gear, a transmission gear and a driving motor; the driving gear is arranged on one group of rotating shafts, the transmission gear is arranged on another group of rotating shafts, and the driving gear and the transmission gear are meshed with each other, and the driving motor is arranged on a support leg to drive one group of rotating shafts to rotate.

[0025] By adopting the above technical solution, the driving motor drives one set of rotating shafts to rotate, and the driving gear and the transmission gear are meshed and transmitted to drive the other set of rotating shafts to rotate, so as to realize the opposite rotation of the two sets of auxiliary rods, thereby realizing the synchronous unfolding and storage operations of the two sets of auxiliary rods.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The detachable connection between the beam and the support leg is achieved by setting the connection assembly, so as to facilitate the disassembly, movement and storage of the crane; the lifting assembly is used to lift the goods to ensure the normal lifting function of the crane; the reversing wheel is convenient for the transfer of the whole equipment after lifting the goods; 2. By setting a moving assembly to drive the fixed pulley to move along the length direction of the beam, it is convenient to move the goods hoisted by the fixed pulley, so as to facilitate the adjustment of the position of the goods; the lifting assembly adjusts the height of the beam to facilitate the transportation of goods at different heights, thereby improving the practicality of the overall device; 3. After the drive assembly is set to unfold the auxiliary rod, the universal wheel is used to assist the support leg, which reduces the threat of the support leg causing the cargo to tip over and ensures the stability of the entire device during operation; after the drive assembly is set to store the auxiliary rod, the overall footprint of the support leg and the auxiliary rod is reduced, so that the entire device can be easily stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a detachable portable gantry crane according to an embodiment of the present application.

[0028] Figure 2 It is a structural diagram used to reflect the connection relationship between the base and the lifting rod.

[0029] Figure 3 It is a cross-sectional schematic diagram used to reflect the connection relationship between the base and the fastening rod.

[0030] Figure 4 It is a cross-sectional schematic diagram used to illustrate the connection relationship between the lifting rod and the sealing ring.

[0031] Description of reference numerals: 1. Support foot; 10. Direction-changing wheel; 11. Base; 111. Mounting ring groove; 112. Sealing ring; 113. Clearance gap; 114. Vent; 115. Rotating shaft; 116. Auxiliary rod; 117. Universal wheel; 12. Lifting rod; 121. Positioning protrusion; 2. Crossbeam; 3. Lifting assembly; 31. Fixed pulley; 32. Guide wheel; 33. Hook; 34. Traction rope; 35. Winch; 4. Connecting assembly; 41. Column; 42. Fixed plate; 43. Connecting plate; 44. Connecting piece; 5. Moving assembly; 51. Moving screw; 52. Moving block; 53. Moving motor; 6. Lifting assembly; 61. Lifting screw; 62. Lifting motor; 7. Fastening rod; 71. Knob; 72. Sealing plug; 8. Driving assembly; 81. Driving gear; 82. Transmission gear; 83. Driving motor. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a detachable portable gantry crane for conveniently moving a protective cabinet.

[0034] Reference Figure 1 and Figure 2 A detachable portable gantry crane comprises two groups of legs 1 and a crossbeam 2 mounted on the top of the two groups of legs 1. A plurality of groups of turning wheels 10 are rotatably mounted on the bottom of each group of legs 1 to facilitate the movement of the legs 1. A connecting assembly 4 is installed between the crossbeam 2 and each group of legs 1 to achieve a detachable connection between the crossbeam 2 and the legs 1. A hoisting assembly 3 is installed on the crossbeam 2 for hoisting cargo.

[0035] Reference Figure 1 and Figure 2 The connecting assembly 4 includes a column 41, a fixing plate 42, a connecting plate 43 and a connecting piece 44; the column 41 is welded and fixed to both ends of the beam 2 in the length direction, and the fixing plate 42 is welded and fixed to the bottom of each group of columns 41. The support leg 1 includes a base 11 placed on the ground and a lifting rod 12, the bottom of the base 11 is rotatably connected to the direction-changing wheel 10, and the lifting rod 12 is slidably inserted into the base 11.

[0036] Reference Figure 1 and Figure 2 , the connecting plate 43 is welded and fixed to the top of each set of lifting rods 12, and the fixing plate 42 and the connecting plate 43 are respectively arranged in a one-to-one correspondence. In this embodiment, the connecting member 44 can be a bolt with a nut. The connecting member 44 is inserted and fixed on the corresponding fixing plate 42 and the connecting plate 43, so that the fixing plate 42 and the connecting plate 43 are fixedly connected.

[0037] Reference Figure 1 and Figure 2 The hoisting assembly 3 includes a fixed pulley 31, a guide wheel 32, a hook 33, a traction rope 34 and a winch 35; the winch 35 is fixedly connected to one of the bases 11 through a bracket. In the present embodiment, the traction rope 34 can be a steel wire rope, and the traction rope 34 is wound and fixed on the winch 35 so that the traction rope 34 can be reeled in and unreeled through the operation of the winch 35.

[0038] Reference Figure 1 and Figure 2 The fixed pulley 31 is installed on the beam 2, the guide wheel 32 is installed at one end of the beam 2 close to the winch 35, the traction rope 34 is away from the end of the winch 35, and passes through the guide wheel 32 and the fixed pulley 31 in sequence, and the hook 33 is fixedly connected to the end of the traction rope 34 away from the winch 35 to facilitate lifting of cargo.

[0039] Reference Figure 1 and Figure 2 , a moving assembly 5 is installed on the cross beam 2 to drive the fixed pulley 31 to move along the length direction of the cross beam 2. The moving assembly 5 includes a moving screw 51, a moving block 52 and a moving motor 53; the moving screw 51 is rotatably installed on the cross beam 2, the moving block 52 is sleeved on the moving screw 51, and the moving block 52 is threadedly connected to the moving screw 51; the moving block 52 is connected to the fixed pulley 31, and the moving block 52 is slidably connected to the cross beam 2; the moving motor 53 is installed on the cross beam 2 to drive the moving screw 51 to rotate.

[0040] Reference Figure 2 and Figure 3 , a lifting assembly 6 is installed on the support leg 1 to drive the crossbeam 2 to move up and down. The lifting assembly 6 includes a lifting screw 61 and a lifting motor 62; the lifting screw 61 is rotatably installed inside the base 11 through a bearing, the lifting screw 61 passes through the lifting rod 12, and the lifting screw 61 is threadedly connected to the lifting rod 12. The lifting motor 62 is installed inside the base 11, and the output end of the lifting motor 62 is transmission-connected to the lifting screw 61 to drive the lifting screw 61 to rotate.

[0041] Reference Figure 2 and Figure 4The top of the base 11 is provided with a mounting groove 111 around the lifting rod 12, and a sealing ring 112 is glued to the inside of the mounting groove 111 of the base 11, and the sealing ring 112 and the lifting rod 12 are adapted to each other. The side wall of the lifting rod 12 is formed with a plurality of groups of positioning protrusions 121 that abut against the sealing ring 112, and all the positioning protrusions 121 are distributed at intervals along the height direction of the lifting rod 12. A clearance notch 113 that is connected to the inside of the mounting groove 111 is provided inside the base 11, and the clearance notch 113 extends along the height direction of the base 11, so that the positioning protrusion 121 can slide in along the lifting rod 12.

[0042] Reference Figure 2 and Figure 3 The side wall of the base 11 is penetrated with a vent 114 connected to the inside of the base 11, and the base 11 is threadedly connected with a fastening rod 7 inside the vent 114. A knob 71 is welded and installed at one end of the fastening rod 7, and a sealing plug 72 made of rubber material is installed at the other end of the fastening rod 7 to seal the vent 114.

[0043] Reference Figure 1 and Figure 2 Two sets of rotating shafts 115 are rotatably mounted on each leg 1 through a support plate and a bearing, and an auxiliary rod 116 is fixedly sleeved on each set of rotating shafts 115. A universal wheel 117 that is rotatably mounted at the bottom of each auxiliary rod 116 and is against the ground is used to assist in supporting the leg 1.

[0044] Reference Figure 1 and Figure 2 , a driving assembly 8 is installed on each set of legs 1, for synchronously unfolding and folding the auxiliary rod 116. The driving assembly 8 includes a driving gear 81, a transmission gear 82 and a driving motor 83; the driving gear 81 is fixedly sleeved on one set of rotating shafts 115, the transmission gear 82 is fixedly sleeved on the other set of rotating shafts 115, and the driving gear 81 and the transmission gear 82 are meshed with each other. The driving motor 83 is fixedly installed on the legs 1, and the output end of the driving motor 83 is transmission-connected with one set of rotating shafts 115, so that the two sets of rotating shafts 115 are driven to rotate through the meshing of the driving gear 81 and the transmission gear 82.

[0045] The implementation principle of a detachable portable gantry crane in the embodiment of the present application is: When using the crane, the fixing plate 42 and the connecting plate 43 are aligned with each other, and the fixing plate 42 and the connecting plate 43 are fixedly connected by the connecting piece 44 to realize the quick connection between the crossbeam 2 and the support leg 1. The hook 33 is connected to the goods, and the winch 35 is driven to work, the traction rope 34 is wound, and the goods are lifted by the traction rope 34 and the hook 33, and then the workers use the turning wheel 10 on the support leg 1 to drive the goods to move.

[0046] When the crane needs to be stored, the connecting piece 44 is removed from the fixing plate 42 and the connecting plate 43, so that the fixing plate 42 is separated from the connecting plate 43, that is, the crossbeam 2 is separated from the supporting leg 1, so that the crane can be disassembled, thereby facilitating the portable storage and transfer of the crane.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detachable portable gantry crane, characterized in that: The invention comprises two groups of supporting legs (1) and a crossbeam (2) arranged on the top of the two groups of supporting legs (1); the bottom of the supporting legs (1) is provided with a plurality of groups of direction-changing wheels (10) for movement; a lifting assembly (3) is arranged on the crossbeam (2) for lifting goods; and a connecting assembly (4) is arranged between the crossbeam (2) and each group of supporting legs (1) for fixedly connecting the crossbeam (2) and the supporting legs (1).

2. A detachable portable gantry crane according to claim 1, characterized in that: The hoisting assembly (3) comprises a fixed pulley (31), a guide wheel (32), a hook (33), a traction rope (34) and a winch (35); the fixed pulley (31) is arranged on the crossbeam (2), the guide wheel (32) is arranged at one end of the crossbeam (2) in the length direction, the hook (33) is arranged on the fixed pulley (31), the traction rope (34) is passed through the guide wheel (32) and the fixed pulley (31), and is connected to the hook (33); the winch (35) is arranged on a support leg (1) close to the guide wheel (32) to be used for winding and unwinding the traction rope (34).

3. A detachable portable gantry crane according to claim 1, characterized in that: The connection assembly (4) comprises a column (41), a fixing plate (42), a connecting plate (43) and a connecting piece (44); the columns (41) are arranged at both ends of the crossbeam (2) in the length direction, and the fixing plate (42) is arranged at the bottom of each group of columns (41); the connecting plate (43) is arranged at the top of each group of supporting legs (1), and the fixing plate (42) and the connecting plate (43) are arranged in a one-to-one correspondence; the connecting piece (44) is passed through the corresponding fixing plate (42) and the connecting plate (43) to be used for fixing and connecting the fixing plate (42) and the connecting plate (43).

4. A detachable portable gantry crane according to claim 2, characterized in that: The crossbeam (2) is provided with a moving assembly (5) for driving the fixed pulley (31) to move along the length direction of the crossbeam (2), and the support foot (1) is provided with a lifting assembly (6) for driving the crossbeam (2) to move up and down.

5. A detachable portable gantry crane according to claim 4, characterized in that: The moving assembly (5) comprises a moving screw (51), a moving block (52) and a moving motor (53); the moving screw (51) is rotatably arranged on the crossbeam (2), the moving block (52) is sleeved on the moving screw (51), and the moving block (52) is threadedly connected to the moving screw (51); the moving block (52) is connected to the fixed pulley (31), and the moving block (52) is slidably connected to the crossbeam (2); the moving motor (53) is arranged on the crossbeam (2) to drive the moving screw (51) to rotate.

6. A detachable portable gantry crane according to claim 4, characterized in that: The support leg (1) comprises a base (11) and a lifting rod (12); the base (11) is connected to the direction-changing wheel (10); the lifting rod (12) is connected to the connecting assembly (4), and the lifting rod (12) is slidably arranged inside the base (11); the lifting assembly (6) comprises a lifting screw (61) and a lifting motor (62); the lifting screw (61) is rotatably arranged inside the base (11), and the lifting screw (61) is threadedly connected to the lifting rod (12); the lifting motor (62) is arranged inside the base (11) to drive the lifting screw (61) to rotate.

7. A detachable portable gantry crane according to claim 6, characterized in that: The top of the base (11) is provided with a mounting ring groove (111) around the lifting rod (12); the base (11) is provided with a sealing ring (112) in the mounting ring groove (111) and tightly attached to the lifting rod (12); the side wall of the lifting rod (12) is provided with a plurality of groups of positioning protrusions (121) that abut against the sealing ring (112) at intervals along the height direction of the lifting rod (12); and the base (11) is provided with a clearance notch (113) that is connected to the inside of the mounting ring groove (111) so that the positioning protrusion (121) can slide into it.

8. A detachable portable gantry crane according to claim 7, characterized in that: A vent (114) is formed through the side wall of the base (11), a fastening rod (7) is threadedly connected to the inside of the vent (114), a knob (71) is provided at one end of the fastening rod (7), and a sealing plug (72) for sealing the vent (114) is provided at the other end of the fastening rod (7).

9. The detachable portable gantry crane according to claim 1, characterized in that: Two sets of rotating shafts (115) are rotatably arranged on each of the supporting legs (1), an auxiliary rod (116) is arranged on each of the rotating shafts (115), and a universal wheel (117) is arranged at the bottom of each of the auxiliary rods (116), and a driving assembly (8) for synchronously unfolding and folding the auxiliary rods (116) is arranged on the supporting legs (1).

10. A detachable portable gantry crane according to claim 9, characterized in that: The driving assembly (8) comprises a driving gear (81), a transmission gear (82) and a driving motor (83); the driving gear (81) is arranged on one group of rotating shafts (115), the transmission gear (82) is arranged on another group of rotating shafts (115), and the driving gear (81) and the transmission gear (82) are meshed with each other; the driving motor (83) is arranged on the supporting leg (1) to drive one group of rotating shafts (115) to rotate.

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