A detachable portable gantry crane

Abstract

The application relates to a detachable portable gantry crane, relates to the technical field of electric power construction equipment, and aims to improve the problems of large pulling force and great safety hidden danger of manual carrying of a protection cabinet. The detachable portable gantry crane comprises two groups of supporting legs and a cross beam arranged at the top of the two groups of supporting legs, the bottom of each supporting leg is provided with a plurality of groups of direction-changing wheels for movement, a hoisting assembly is arranged on the cross beam and used for hoisting goods, and a connecting assembly is arranged between the cross beam and each group of supporting legs and used for fixedly connecting the cross beam and the supporting legs. The application has the effect of conveniently moving the protection cabinet.

Description

Technical Field

[0001] This application relates to the field of power construction equipment technology, and in particular to a detachable portable gantry crane. Background Technology

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

[0003] In related technologies, when it is necessary to position the protection cabinet in the secondary room of a 110kV substation, since the bottom of the secondary room is an elevated foundation, which is usually 50 centimeters above the ground level, and the protection cabinet is usually lightweight, manual lifting and carrying is used during on-site construction.

[0004] Regarding the aforementioned technologies, the inventors discovered that manually handling protective cabinets is labor-intensive and poses significant safety hazards, thus requiring improvement. Summary of the Invention

[0005] To facilitate the movement of the protective cabinet, this application provides a detachable portable gantry crane.

[0006] The detachable portable gantry crane provided in this application adopts the following technical solution:

[0007] A detachable portable gantry crane includes two sets of legs and a crossbeam mounted on top of the two sets of legs. The bottom of each leg is provided with several sets of directional wheels for movement. The crossbeam is provided with a lifting assembly for lifting goods. A connecting assembly is provided between the crossbeam and each set of legs for fixing the crossbeam and legs together.

[0008] By adopting the above technical solution, the connecting component enables the detachable connection between the crossbeam and the legs, so as to facilitate the disassembly, movement and storage of the crane; the lifting component is used to lift goods to ensure the normal lifting function of the crane; the directional wheels facilitate the transfer of the whole equipment after the goods are lifted.

[0009] Preferably, the hoisting assembly includes a fixed pulley, a guide wheel, a hook, a traction rope, and a winch; the fixed pulley is mounted on a crossbeam, the guide wheel is mounted at one end of the crossbeam along its length, the hook is mounted on the fixed pulley, and the traction rope passes through the guide wheel and the fixed pulley and is connected to the hook; the winch is mounted on a support leg near the guide wheel for winding and unwinding the traction rope.

[0010] By adopting the above technical solution, the fixed pulley and guide wheel guide and limit the movement path of the traction rope, the winch winds up and unwinds the traction rope, and the hook is used to hook the goods to lift and lower them, thereby realizing the hoisting of goods and convenient handling.

[0011] Preferably, the connecting assembly includes columns, fixing plates, connecting plates, and connectors; the columns are located at both ends of the crossbeam along its length, the fixing plates are located at the bottom of each set of columns, the connecting plates are located at the top of each set of legs, and the fixing plates and connecting plates are respectively provided in a one-to-one correspondence; the connectors are inserted through the corresponding fixing plates and connecting plates to fix and connect the fixing plates and connecting plates.

[0012] By adopting the above technical solution, the fixing plate and the connecting plate are fitted together and connected and fixed using connectors to achieve rapid assembly and fixing of the crossbeam and the support legs; when it is necessary to disassemble the crossbeam and the support legs, the connectors are disassembled to separate the fixing plate and the connecting plate, so as to facilitate the easy disassembly of the crossbeam and the support legs, thereby realizing the convenient disassembly and assembly of the whole device and improving convenience.

[0013] Preferably, the crossbeam is provided with a moving component for driving the fixed pulley to move along the length of the crossbeam, and the support leg is provided with a lifting component for driving the crossbeam to move up and down.

[0014] By adopting the above technical solution, the moving component drives the fixed pulley to move along the length of the crossbeam, so as to move the goods hoisted by the fixed pulley and thus facilitate the adjustment of the position of the goods; the lifting component adjusts the height of the crossbeam to facilitate the transportation of goods at different heights, thereby improving the practicality of the overall device.

[0015] Preferably, the moving component includes a moving screw, a moving block, and a moving motor; the moving screw is rotatably mounted 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 mounted on the crossbeam to drive the moving screw to rotate.

[0016] 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, which in turn drives the fixed pulley to move, thereby facilitating the movement of the goods lifted by the hook.

[0017] Preferably, the support leg includes a base and a lifting rod. The base is connected to the steering wheel, and the lifting rod is connected to the connecting assembly. The lifting rod is slidably inserted inside the base. The lifting assembly includes a lifting screw and a lifting motor. The lifting screw is rotatably disposed inside the base and is threadedly connected to the lifting rod. The lifting motor is disposed inside the base to drive the lifting screw to rotate.

[0018] 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, which in turn drives the crossbeam to move up and down, so as to adjust the height position of the crossbeam.

[0019] Preferably, the top of the base has an installation ring groove around the lifting rod, and a sealing ring that is tightly attached to the lifting rod is provided inside the installation ring groove of the base; the side wall of the lifting rod has a number of positioning protrusions that abut against the sealing ring at intervals along the height direction of the lifting rod; and the base has a clearance notch that communicates with the inside of the installation ring groove so that the positioning protrusions can slide into it.

[0020] By adopting the above technical solution, the sealing ring is placed inside the mounting ring groove, so that the lifting rod fits snugly against the inner wall of the base, so as to limit and guide the movement direction of the lifting rod.

[0021] The sealing ring fits snugly around the lifting rod, creating an airtight space between the base and the bottom of the lifting rod. When the lifting rod moves slowly, the positioning protrusion moves within the clearance notch and abuts against the sealing ring, causing it to elastically deform. At this time, the air inside the airtight space exchanges normally with the outside air, allowing the lifting rod to move normally and ensuring its lifting and lowering requirements. When the thread between the lifting rod and the lifting screw fails, the weight of the goods carried by the crossbeam causes the lifting rod to move rapidly towards the base. In this case, the air inside the airtight space cannot exchange with the outside air in time, increasing the air pressure inside the airtight space. This increases the air pressure inside the airtight space, supporting and cushioning the lifting rod and crossbeam, reducing the risk of goods falling and injuring people due to thread failure, and ensuring the overall operational safety of the device.

[0022] Preferably, the side wall of the base has a through-hole for ventilation, and a fastening rod is threaded inside the ventilation. One end of the fastening rod is provided with a knob, and the other end of the fastening rod is provided with a sealing plug for sealing the ventilation.

[0023] By adopting the above technical solution, when it is necessary to quickly adjust the lifting rod, the fastening rod and sealing plug can be removed from the vent. The air inside the base and the outside can be exchanged through the vent, which facilitates the rapid movement of the lifting rod. After the lifting rod has been moved, the fastening rod and sealing plug can be rotated into the vent through the knob to seal the vent, so that the inside of the base and the bottom of the lifting rod form a closed airtight space to ensure the safety of the entire device.

[0024] Preferably, each of the support legs is rotatably provided with two sets of rotating shafts, each of the rotating shafts is provided with an auxiliary rod, and each of the auxiliary rods is provided with a caster wheel at its bottom. The support leg is provided with a drive assembly for synchronously unfolding and retracting the auxiliary rod.

[0025] By adopting the above technical solution, the drive component drives the auxiliary rod to unfold and retract synchronously. After unfolding the auxiliary rod, the casters provide auxiliary support for the legs, reducing the risk of goods tipping over due to the legs and ensuring the stability of the entire device during operation. After retracting the auxiliary rod, the footprint of the legs and auxiliary rod is reduced, making it easier to store the entire device.

[0026] Preferably, the drive assembly includes a drive gear, a transmission gear, and a drive motor; the drive gear is disposed on one set of rotating shafts, the transmission gear is disposed on another set of rotating shafts, and the drive gear and the transmission gear mesh with each other; the drive motor is disposed on a support leg to drive one set of rotating shafts to rotate.

[0027] By adopting the above technical solution, the drive motor drives one set of rotating shafts to rotate, and the drive gear and transmission gear mesh 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 of the two sets of auxiliary rods.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The crossbeam and legs are detachably connected by a connecting component, which facilitates the disassembly, movement and storage of the crane; the lifting component is used to lift goods and ensure the normal lifting function of the crane; the directional wheels facilitate the transfer of the whole equipment after lifting goods;

[0030] 2. By setting up a moving component to drive the fixed pulley to move along the length of the crossbeam, it is possible to move the goods hoisted by the fixed pulley, thereby facilitating the adjustment of the goods' position; the lifting component adjusts the height of the crossbeam to facilitate the transport of goods at different heights, thus improving the practicality of the overall device.

[0031] 3. By setting up the drive assembly to extend the auxiliary rod, the casters provide auxiliary support to the outriggers, reducing the risk of goods tipping over due to the outriggers and ensuring the stability of the entire device during operation. By setting up the drive assembly to store the auxiliary rod, the overall footprint of the outriggers and auxiliary rod is reduced, making it easier to store the entire device. Attached Figure Description

[0032] Figure 1This is a structural schematic diagram of a detachable portable gantry crane according to an embodiment of this application.

[0033] Figure 2 It is a structural diagram used to illustrate the connection between the base and the lifting rod.

[0034] Figure 3 It is a cross-sectional schematic diagram used to illustrate the connection relationship between the base and the fastening rod.

[0035] Figure 4 It is a cross-sectional schematic diagram used to illustrate the connection relationship between the lifting rod and the sealing ring.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Support leg; 10. Directional wheel; 11. Base; 111. Mounting ring groove; 112. Sealing ring; 113. Clearance notch; 114. Vent; 115. Rotating shaft; 116. Auxiliary rod; 117. Caster 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. Fixing plate; 43. Connecting plate; 44. Connector; 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. Drive assembly; 81. Drive gear; 82. Transmission gear; 83. Drive motor. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0039] This application discloses a detachable portable gantry crane for conveniently moving protective cabinets.

[0040] Reference Figure 1 and Figure 2 A detachable portable gantry crane includes two sets of legs 1 and a crossbeam 2 mounted on top of the two sets of legs 1. Each set of legs 1 has several sets of directional wheels 10 rotatably mounted on its bottom to facilitate movement. A connecting assembly 4 is installed between the crossbeam 2 and each set of legs 1 to achieve a detachable connection between the crossbeam 2 and the legs 1. A lifting assembly 3 is mounted on the crossbeam 2 for lifting goods.

[0041] Reference Figure 1 and Figure 2The connecting assembly 4 includes a column 41, a fixing plate 42, a connecting plate 43, and a connector 44; the column 41 is welded and fixed to both ends of the crossbeam 2 along its length, and the fixing plate 42 is welded and fixed to the bottom of each set 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 directional wheel 10, and the lifting rod 12 slides through the interior of the base 11.

[0042] 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 fitted together. In this embodiment, the connecting member 44 can be a bolt with a nut. The connecting member 44 is inserted and fixed to the correspondingly fitted fixing plate 42 and connecting plate 43, so that the fixing plate 42 and the connecting plate 43 are fixedly connected.

[0043] 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 via a bracket. In this 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 wound and unwound through the operation of the winch 35.

[0044] Reference Figure 1 and Figure 2 The fixed pulley 31 is installed on the crossbeam 2, the guide wheel 32 is installed on the end of the crossbeam 2 near the winch 35, the traction rope 34 away from the winch 35 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 the hoisting of goods.

[0045] Reference Figure 1 and Figure 2 A movable assembly 5 is installed on the crossbeam 2 to drive the fixed pulley 31 to move along the length of the crossbeam 2. The movable assembly 5 includes a movable screw 51, a movable block 52, and a movable motor 53; the movable screw 51 is rotatably mounted on the crossbeam 2, the movable block 52 is sleeved on the movable screw 51, and the movable block 52 is threadedly connected to the movable screw 51; the movable block 52 is connected to the fixed pulley 31, and the movable block 52 is slidably connected to the crossbeam 2; the movable motor 53 is mounted on the crossbeam 2 to drive the movable screw 51 to rotate.

[0046] Reference Figure 2 and Figure 3A 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 mounted inside the base 11 via bearings, passes through the lifting rod 12, and is threadedly connected to the lifting rod 12. The lifting motor 62 is installed inside the base 11, and its output end is driven by the lifting screw 61 to drive the lifting screw 61 to rotate.

[0047] Reference Figure 2 and Figure 4 The base 11 has a mounting groove 111 around the lifting rod 12 at its top, and a sealing ring 112 is glued to the base 11 inside the mounting groove 111, with the sealing ring 112 fitting into the lifting rod 12. The sidewall of the lifting rod 12 is integrally formed with several sets of positioning protrusions 121 that abut against the sealing ring 112, and all positioning protrusions 121 are spaced apart along the height direction of the lifting rod 12. The base 11 has a clearance notch 113 inside that communicates with the inside of the mounting groove 111, and the clearance notch 113 extends along the height direction of the base 11 to allow the positioning protrusions 121 to slide into the lifting rod 12.

[0048] Reference Figure 2 and Figure 3 The base 11 has a vent 114 through its side wall, which communicates with the interior of the base 11. A fastening rod 7 is threadedly connected to the vent 114 inside the base 11. A knob 71 is welded to one end of the fastening rod 7, and a rubber sealing plug 72 is installed at the other end of the fastening rod 7 to seal the vent 114.

[0049] Reference Figure 1 and Figure 2 Each leg 1 has two sets of rotating shafts 115 rotatably mounted on it via a support plate and bearings, and each set of rotating shafts 115 is fixedly sleeved with an auxiliary rod 116. Each auxiliary rod 116 has a universal wheel 117 rotatably mounted at its bottom that rests against the ground, so as to assist in supporting the leg 1.

[0050] Reference Figure 1 and Figure 2 Each set of support legs 1 is equipped with a drive assembly 8 for synchronously deploying and retracting the auxiliary rod 116. The drive assembly 8 includes a drive gear 81, a transmission gear 82, and a drive motor 83. The drive gear 81 is fixedly sleeved on one set of rotating shafts 115, and the transmission gear 82 is fixedly sleeved on the other set of rotating shafts 115, with the drive gear 81 and transmission gear 82 meshing with each other. The drive motor 83 is fixedly mounted on the support leg 1, and the output end of the drive motor 83 is connected to one set of rotating shafts 115 for transmission, so that the meshing of the drive gear 81 and transmission gear 82 drives the two sets of rotating shafts 115 to rotate.

[0051] The implementation principle of a detachable portable gantry crane according to an embodiment of this application is as follows:

[0052] When using the crane, align the fixed plate 42 and the connecting plate 43 together, and use the connector 44 to fix the fixed plate 42 and the connecting plate 43 together, so as to quickly connect the crossbeam 2 and the support leg 1. Connect the hook 33 to the cargo, drive the winch 35 to work, and wind up the traction rope 34. Use the traction rope 34 and the hook 33 to lift the cargo, and then make it easy for the worker to move the cargo using the reversing wheel 10 on the support leg 1.

[0053] When the crane needs to be stored, the connector 44 is removed from the fixing plate 42 and the connecting plate 43, so that the fixing plate 42 and the connecting plate 43 are separated, that is, the crossbeam 2 and the support leg 1 are separated, so that the crane can be disassembled, thereby facilitating the portable storage and transfer of the crane.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A detachable and portable gantry crane, characterized in that: It includes two sets of support legs (1) and a crossbeam (2) set on top of the two sets of support legs (1). The bottom of the support legs (1) is provided with several sets of directional wheels (10) for movement. The crossbeam (2) is provided with a lifting assembly (3) for lifting goods. A connecting assembly (4) is provided between the crossbeam (2) and each set of support legs (1) for fixing and connecting the crossbeam (2) and the support legs (1). The support leg (1) includes a base (11) and a lifting rod (12). The base (11) is connected to the directional wheel (10), and the lifting rod (12) is connected to the connecting assembly (4). The lifting rod (12) slides through the base (11). The top of the base (11) is provided with an installation ring groove (111) around the lifting rod (12), and a sealing ring (112) is glued to the base (11) inside the installation ring groove (111). The sealing ring (112) and the lifting rod (12) are adapted to each other. The side wall of the lifting rod (12) is formed in one piece with several sets of positioning protrusions (121) that abut against the sealing ring (112). All the positioning protrusions (121) are distributed at intervals along the height direction of the lifting rod (12). The base (11) is provided with a clearance notch (113) that communicates with the inside of the installation ring groove (111). The clearance notch (113) extends along the height direction of the base (11) so that the positioning protrusions (121) slide into the lifting rod (12).

2. A detachable portable gantry crane according to claim 1, characterized in that: 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 fixed pulley (31) is mounted on the crossbeam (2), the guide wheel (32) is mounted at one end of the crossbeam (2) along its length, the hook (33) is mounted on the fixed pulley (31), and the traction rope (34) passes through the guide wheel (32) and the fixed pulley (31) and is connected to the hook (33); the winch (35) is mounted on a support leg (1) near the guide wheel (32) for winding and unwinding the traction rope (34).

3. A detachable portable gantry crane according to claim 1, characterized in that: The connecting assembly (4) includes a column (41), a fixing plate (42), a connecting plate (43), and a connector (44); the column (41) is located at both ends of the crossbeam (2) along its length, and the fixing plate (42) is located at the bottom of each set of columns (41); the connecting plate (43) is located at the top of each set of legs (1), and the fixing plate (42) and the connecting plate (43) are respectively provided in a one-to-one correspondence; the connector (44) passes through the corresponding fixing plate (42) and connecting plate (43) to fix and connect 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 component (5) for driving the fixed pulley (31) to move along the length direction of the crossbeam (2), and the support leg (1) is provided with a lifting component (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 component (5) includes a moving screw (51), a moving block (52), and a moving motor (53); the moving screw (51) is rotatably mounted 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 mounted 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 lifting assembly (6) includes a lifting screw (61) and a lifting motor (62); the lifting screw (61) is rotatably disposed inside the base (11), and the lifting screw (61) is threadedly connected to the lifting rod (12); the lifting motor (62) is disposed inside the base (11) to drive the lifting screw (61) to rotate.

7. A detachable portable gantry crane according to claim 1, characterized in that: The base (11) has a vent (114) through the side wall. A fastening rod (7) is threaded inside 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).

8. A detachable portable gantry crane according to claim 1, characterized in that: Each of the support legs (1) is rotatably provided with two sets of rotating shafts (115), each of the rotating shafts (115) is provided with an auxiliary rod (116), and each of the auxiliary rods (116) is provided with a universal wheel (117) at the bottom. The support leg (1) is provided with a drive assembly (8) for synchronously unfolding and storing the auxiliary rods (116).

9. A detachable portable gantry crane according to claim 8, characterized in that: The drive assembly (8) includes a drive gear (81), a transmission gear (82), and a drive motor (83); the drive gear (81) is mounted on one set of rotating shafts (115), the transmission gear (82) is mounted on another set of rotating shafts (115), and the drive gear (81) and the transmission gear (82) mesh with each other; the drive motor (83) is mounted on a support (1) to drive one set of rotating shafts (115) to rotate.

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