Cable drum convenient to replace on crown block and replacing method of cable drum

Abstract

The invention discloses a cable drum convenient to replace on a crown block and a replacing method of the cable drum, and belongs to the technical field of cable drum replacing. The cable drum comprises two bottom plates, vertical plates are installed on the top sides of the bottom plates, a wire outlet box is arranged on the vertical plates, rotating shafts are installed in the two vertical plates, and volute springs are rotationally connected to the outer surfaces of the rotating shafts; a sleeve body is rotationally connected to the outer surface of the rotating shaft, baffles are installed on the left side and the right side of the sleeve body, cross rods are installed on the opposite sides of the two vertical plates, at least one pair of connecting holes are formed in the baffles, and locking pieces are arranged on the cross rods; the baffle penetrates through the connecting hole through a locking piece to be connected with the cross rod, an auxiliary rotating assembly is detachably arranged on the outlet box and the rotating shaft, and a limiting assembly is arranged on the auxiliary rotating assembly. And the baffle and the cable drum are fixed through the locking piece, so that the cable drum can be conveniently stored for a long time after the torque ring is locked.

Description

Technical Field

[0001] The invention relates to the technical field of cable drum replacement, and in particular to a cable drum which is easy to replace on an overhead crane and a replacement method thereof. Background Art

[0002] The electromagnetic bridge crane is a bridge crane that uses an electromagnetic disk as a pick-up device. It is used to lift magnetic metal materials such as steel sections, steel plates and scrap steel. The electromagnetic disk uses direct current. It is controlled by a separate set of electrical equipment and automatically reels the power cable through an elastic cable reel with a spiral spring as the power source. It is used in various occasions to supply power to the DC control cabinet on the overhead crane bridge and the lifting electromagnet mobile cable of the ground picking device.

[0003] During use, the spiral spring of the cable reel is easily failed due to reasons such as power cable breakage and frequent use. In the prior art, when replacing the spiral spring, the cable is first removed from the damaged cable reel, and then the damaged cable reel is removed from the overhead crane. Then, the new cable reel is fixed to the overhead crane, and the cable reel is rotated to the torque circle by manpower. Then, the cable reel is held with a crowbar to prevent the spiral spring from deforming and restoring to drive the cable reel to rotate. Finally, the external cable is connected to the internal terminal of the cable reel to complete the replacement of the cable reel and the spiral spring.

[0004] The prior art has the following technical defects. First, the reasons such as the crowbar is not held firmly or accidentally tripped can cause the cable reel to rotate rapidly, leaving a huge hidden danger to production safety. Secondly, the cable reel requires multiple people to rotate at the same time to drive the cable reel to rotate, and the space on the overhead crane is narrow, which is not convenient for multiple workers to stand on the overhead crane at the same time to rotate the cable reel to the specified torque circle. Thirdly, there are no guardrails on the left and right sides of the overhead crane. The risk of workers performing construction on the overhead crane is high, and safety accidents are prone to occur. Finally, it takes 1 hour to replace a single-spring cable reel and 1.5 hours for a double-spring, and the replacement time is relatively long. Summary of the invention

[0005] The purpose of the present invention is to provide a cable reel which is easy to replace on an overhead travelling crane and a replacement method thereof in view of the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cable reel that is easy to replace on an overhead crane and a replacement method thereof, comprising two base plates, a vertical plate is installed on the top side of the base plate, an outlet box is provided on the vertical plate, a rotating shaft is installed inside the two vertical plates, a spiral spring is rotatably connected to the outer surface of the rotating shaft, a sleeve body is rotatably connected to the outer surface of the rotating shaft, baffles are installed on the left and right sides of the sleeve body, a cross bar is installed on the opposite side of the two vertical plates, at least one pair of connecting holes is opened on the baffle, a locking piece is provided on the cross bar, the baffle is connected to the cross bar through the connecting hole by the locking piece, an auxiliary rotating assembly is detachably provided on the outlet box and the rotating shaft, and a limiting assembly is provided on the auxiliary rotating assembly.

[0007] By adopting the above technical scheme, the auxiliary rotating assembly can make the sleeve body more labor-saving during the rotation process, so that the sleeve body can be locked with a torque when operated by a single person, and the limiting assembly can facilitate temporary locking of the torque of the sleeve body, so as to facilitate the use of the locking piece to lock the torque ring of the cable reel, and the locking piece is used to fix the sleeve body and the baffle on the cross bar, so that the torque ring of the cable reel can be locked before the cable reel is installed, and at the same time, the limiting assembly and the auxiliary rotating assembly can be disassembled and applied to other cable reels.

[0008] Preferably, the locking member is two iron wires with one end wound around the cross bar, and the iron wires are respectively passed through the corresponding connecting holes and then wound around the cross bar.

[0009] By adopting the above technical solution, the baffle plate and the cross bar can be bound by the wire, thereby locking the torque ring of the sleeve body, making it convenient to store the sleeve body with the locked torque ring for a long time.

[0010] Preferably, the locking member includes a connecting plate installed on the outer surface of the cross bar, a first bolt slidably connected to the inside of the connecting plate, and a first nut threadedly connected to the outer surface of the first bolt. A through hole is provided in the connecting plate for the first bolt to pass through. The first bolt passes through the through hole on the connecting plate and the connecting hole and is locked by the first nut.

[0011] By adopting the above technical solution, the cross bar and the baffle can be fixed together by using the first bolt and the first nut, thereby preventing the baffle and the cable drum from rotating and achieving early locking of the torque ring.

[0012] Preferably, the auxiliary rotating assembly includes a mounting plate detachably mounted on the outlet box, the mounting plate is internally rotatably connected to a rotating rod, a turntable is mounted at one end of the rotating rod, a driving pinion is mounted on the outer surface of the rotating rod, and the auxiliary rotating assembly also includes a driven large gear detachably mounted on the outer surface of the rotating shaft, and the driving pinion and the driven large gear are meshed.

[0013] By adopting the above technical solution, rotating the turntable can drive the rotating rod and the active pinion to rotate, and the cooperation between the active pinion and the driven large gear can save the force required to rotate the sleeve body, so that the sleeve body can be rotated when operated by one person.

[0014] Preferably, a bottom plate is mounted on the bottom end of the mounting plate, and the bottom plate is mounted on the top side of the outlet box by means of second bolts.

[0015] By adopting the above technical solution, it is convenient to install the mounting plate on the outlet box, and it is also convenient to disassemble the auxiliary rotating assembly after use, thereby realizing the reuse of the auxiliary rotating assembly.

[0016] Preferably, the driven large gear comprises two half gears, a plurality of pairs of ear plates installed on both sides of the half gears, a third bolt passing through each set of the ear plates and a second nut threadedly connected to the outer surface of the third bolt.

[0017] By adopting the above technical solution, it is convenient to install the driven large gear on the rotating shaft, and it is also convenient to remove the driven large gear from the rotating shaft.

[0018] Preferably, the limit assembly includes a horizontal plate installed on one side of the mounting plate, the internal thread of the horizontal plate is connected to a screw, a handle is installed at one end of the screw, the other end of the screw away from the handle is rotatably connected to the limit plate, the horizontal plate is slidably connected to a limit rod, one end of the limit rod is connected to the corresponding side of the limit plate, and the limit plate can limit the rotating rod by abutting against the outer surface of the rotating rod.

[0019] By adopting the above technical solution, the sleeve body can be limited by the limiting abutment rotating rod, so that the locking piece can be easily installed on the cross bar and the baffle.

[0020] Preferably, the auxiliary rotating assembly further comprises a fixing plate mounted on the transverse plate, and the rotating rod is rotatably connected to the fixing plate via a bearing seat.

[0021] By adopting the above technical solution, the fixing plate can be used to support the rotating rod, thereby ensuring the stability of the rotating rod during rotation.

[0022] Preferably, an inspection port is provided on the opposite sides of the two baffles, and the outer surface of the sleeve body is used for winding the cable.

[0023] By adopting the above technical solution, the inspection port can facilitate the inspection of the interior of the cable reel, thereby facilitating timely replacement of the cable reel after the cable reel is damaged.

[0024] A method for replacing a cable drum for an overhead crane in a safe and quick manner online is more efficient and convenient when the torque ring of the sleeve body is locked in advance on the ground. The method comprises the following steps: Step 1: Place the new sleeve body on the ground so that the spiral spring is in a natural state, open at least one set of connection holes at the lowest points of the baffles on the left and right sides of the new sleeve body, and loosen the connection bolts of each terminal on the new sleeve body; Step 2: Observe the upper and lower limits of the overhead crane lifting mechanism and the number of turns of the sleeve body corresponding to the winding and releasing of the cable in advance, and use this number of turns plus the reserved circle of the sleeve body as the torque circle; Step 3: Install the auxiliary rotating assembly on the outlet box and connect the auxiliary rotating assembly to the rotating shaft; Step 4: By rotating the turntable on the auxiliary rotating assembly, the turntable drives the sleeve body to rotate, so that the sleeve body rotates to the specified torque circle, and at the same time, the connecting hole is kept at the lowest point, and the torque circle of the sleeve body is temporarily locked by the limit mechanism; Step 5: Use the wire to pass through the connection holes on both sides of the sleeve body, and use the locking piece to connect the baffle and the cross bar; Step 6: Remove the auxiliary rotating assembly and the limit assembly from the new cable drum, and transport the new cable drum to the overhead traveling crane; Step 7. Unscrew the anchor bolts of the old cable reel on the overhead crane, remove the cable from the old sleeve body, install the removed cable on the new sleeve body, install the new cable reel on the overhead crane, and remove the wire wrapped around the crossbar.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The baffle and the cable reel are fixed by a locking piece, which is convenient for long-term storage of the cable reel after the locking torque ring, so that it can be used directly when needed. At the same time, it replaces the method of locking the cable torque ring with tools such as a crowbar in the prior art, avoiding the situation where the crowbar is not firmly held or accidentally tripped and causes the crowbar to move, thereby avoiding the safety hazard caused by the cable reel under the reset action of the spiral spring.

[0027] 2. By detachably providing an auxiliary rotating assembly on the outlet box, the auxiliary rotating assembly can be installed on the outlet box when the torque ring needs to be locked, thereby saving effort when rotating the sleeve body, allowing the sleeve body to be rotated by one person, and after locking the torque ring with a locking piece, it can be removed and used on another sleeve body, thereby realizing the reuse of the auxiliary rotating assembly.

[0028] 3. By providing a limit assembly on the auxiliary rotating assembly, the limit assembly can be used to temporarily lock the sleeve body after the torque ring of the sleeve body is adjusted by the auxiliary rotating assembly, thereby facilitating the installation of the locking piece on the cable reel.

[0029] 4. By adopting the above technical solution to lock the torque ring before replacing the cable reel, the cable reel can be rotated on the ground, and the construction space is wider than that on the overhead crane. At the same time, the torque ring of the cable reel can be locked in advance when it is idle, reducing the manpower required for installation. At the same time, locking the torque ring of the cable reel on the ground can prevent construction workers from falling from the overhead crane during construction.

[0030] 5. Since the torque ring of the cable reel is locked in advance, the time required for replacing the cable reel is shorter, which improves the replacement efficiency and ensures the progress of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.

[0032] Figure 2 This is a schematic side view of the structure of the present invention without the auxiliary rotating assembly and the limiting assembly.

[0033] Figure 3 It is a schematic structural diagram of the third embodiment of the present invention.

[0034] Figure 4 Schematic diagram of the structure of a locking member according to the third embodiment of the present invention.

[0035] Figure 5 It is a schematic structural diagram of the auxiliary rotating assembly and the limiting assembly of the present invention.

[0036] Figure 6 It is a side structural schematic diagram of the driven large gear of the present invention.

[0037] In the figure: 1. bottom plate; 2. vertical plate; 3. outlet box; 4. rotating shaft; 5. spiral spring; 6. sleeve body; 7. baffle; 8. cross bar; 900. locking piece; 901. iron wire; 902. connecting plate; 903. first bolt; 904. first nut; 10. inspection port; 11. cable; 1200. auxiliary rotating assembly; 1201. mounting plate; 1202. rotating rod; 1203. turntable; 1204. driving small gear; 1205. driven large gear; 1206. fixing plate; 1300. limiting assembly; 1301. horizontal plate; 1302. screw; 1303. handle; 1304. limiting plate; 1305. limiting rod; 14. connecting hole. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0039] Please refer to Figures 1 to 6 In this embodiment, a cable reel for online safe and quick replacement of a crane comprises two bottom plates 1, a vertical plate 2 is installed on the top side of the bottom plate 1, an outlet box 3 is provided on the vertical plate 2, a rotating shaft 4 is installed inside the two vertical plates 2, a spiral spring 5 is rotatably connected to the outer surface of the rotating shaft 4, a sleeve body 6 is rotatably connected to the outer surface of the rotating shaft 4, baffles 7 are installed on the left and right sides of the sleeve body 6, a cross bar 8 is installed on the opposite side of the two vertical plates 2, at least one pair of connecting holes 14 is opened on the baffle 7, a locking piece 900 is provided on the cross bar 8, the baffle 7 is connected to the cross bar 8 through the connecting hole 14 through the locking piece 900, an auxiliary rotating assembly 1200 is detachably provided on the outlet box 3 and the rotating shaft 4, a limiting assembly 1300 is provided on the auxiliary rotating assembly 1200, an inspection port 10 is opened on the opposite side of the two baffles 7, and the outer surface of the sleeve body is used for winding a cable 11.

[0040] It can be understood that the outlet box 3 is used to connect the power supply for power supply, the spiral spring 5 is used for deformation recovery to drive the cable 11 to shrink, so that the cable 11 is rolled up on the sleeve body 6, and the baffle 7 can limit the cable 11 to prevent the cable 11 from falling off from both sides of the sleeve body 6. The locking piece 900 and the connecting hole 14 are used to connect the baffle 7 and the sleeve body 6 with the cross bar 8, so that the sleeve body 6 can be locked in advance after the cable reel is rotated to a specified number of circles. The torque circle is convenient for the sleeve body 6 to be stored for a long time after the torque circle is locked. The auxiliary rotation component 1200 is used to save effort when driving the sleeve body 6 to rotate, so that the sleeve body 6 can be rotated under single-person operation. The limit component 1300 is used to temporarily limit the torque circle of the sleeve body 6 after adjusting it, so as to facilitate the use of the locking piece 900 to lock the torque circle of the sleeve body 6.

[0041] It should be noted that, compared with using the limit assembly 1300 to lock the torque ring of the sleeve body 6, using the locking member 900 to lock the torque ring of the sleeve body 6 is more economical and can facilitate the application of the auxiliary rotating assembly 1200 and the limit assembly 1300 on other cable reels.

[0042] Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 The auxiliary rotating assembly 1200 in this embodiment includes a mounting plate 1201 detachably mounted on the outlet box 3, a bottom plate is mounted on the bottom end of the mounting plate 1201, and the bottom plate is mounted on the top side of the outlet box 3 through a second bolt, and the internal rotation of the mounting plate 1201 is connected to a rotating rod 1202, a turntable 1203 is mounted on one end of the rotating rod 1202, and a driving pinion 1204 is mounted on the outer surface of the rotating rod 1202. The auxiliary rotating assembly 1200 also includes a driven large gear 1205 detachably mounted on the outer surface of the rotating shaft 4, the driving pinion 1204 and the driven large gear 1205 are meshed, and the driven large gear 1205 includes two half gears, a plurality of pairs of ear plates mounted on both sides of the half gears, a third bolt running through each group of ear plates, and a second nut threadedly connected to the outer surface of the third bolt.

[0043] It should be noted that the mounting plate 1201 is installed on the outlet box 3 through the base plate and the second bolt, which can facilitate the installation and disassembly of the mounting plate 1201. The driven large gear 1205 is connected together through the third bolt, the second nut and the ear plate, which can be conveniently removed from and installed on the rotating shaft 4, thereby facilitating the reuse of the auxiliary rotating assembly 1200. The turntable 1203 can save effort while driving the rotating rod 1202 to rotate, thereby ensuring that the rotating rod 1202 saves effort when driving the driving pinion 1204. The driving pinion 1204 and the driven large gear 1205 are used in conjunction to reduce the force required to rotate the sleeve body 6, so that the sleeve body 6 can be rotated under the operation of a single person.

[0044] Please refer to Figure 1 , Figure 2 and Figure 5 The limiting assembly 1300 in this embodiment includes a horizontal plate 1301 installed on one side of the mounting plate 1201, the internal thread of the horizontal plate 1301 is connected with a screw rod 1302, one end of the screw rod 1302 is installed with a handle 1303, the other end of the screw rod 1302 away from the handle 1303 is rotatably connected to a limiting plate 1304, the horizontal plate 1301 is slidably connected with a limiting rod 1305, one end of the limiting rod 1305 is connected to the corresponding side of the limiting plate 1304, and the limiting plate 1304 can limit the rotating rod 1202 by abutting against the outer surface of the rotating rod 1202.

[0045] It should be noted that the handle 1303 can conveniently drive the screw 1302 to rotate, and the screw 1302 can drive the limit plate 1304 to move, so that the limit plate 1304 can abut against the rotating rod 1202, thereby limiting the rotating rod 1202, and then temporarily locking the torque ring of the sleeve body 6, making it convenient to install the locking piece 900 on the cable reel.

[0046] Please refer to Figure 4 In this embodiment, the auxiliary rotating assembly 1200 further includes a fixed plate 1206 mounted on the horizontal plate 1301, and the rotating rod 1202 is rotatably connected to the fixed plate 1206 via a bearing seat.

[0047] It should be noted that the fixing plate is used to support the rotating rod 1202 so that the rotating rod 1202 can rotate stably. Embodiment 2

[0048] Please refer to Figures 1 to 2 The locking member 900 in this embodiment is two iron wires 901 with one end wound around the cross bar 8. The iron wires 901 pass through the corresponding connecting holes 14 and are wound around the cross bar 8.

[0049] In this embodiment, an iron wire is passed through the first connecting hole in advance and the two ends of the iron wire are wrapped around the cross bar 8 to fix the sleeve body 6 and the baffle 7, thereby preventing the baffle 7 and the sleeve body 6 from rotating due to the deformation recovery of the spiral spring 5, which is convenient for locking the torque ring in advance on the ground, and there is no need for the staff to rotate the cable reel on the overhead crane to lock the torque ring.

[0050] It should be noted that the locking member 900 may also be a steel wire rope.

[0051] A method for replacing a cable drum for an overhead crane in a safe and fast manner online is more efficient and convenient when the torque ring of the sleeve body 6 is locked in advance on the ground. The method comprises the following steps: Step 1, place the new sleeve body 6 on the ground, rotate the new sleeve body 6 to make the spiral spring 5 in a natural state, open at least one set of connection holes 14 at the lowest points of the baffles 7 on the left and right sides of the new sleeve body 6, and loosen the connection bolts of each terminal on the new sleeve body 6; Step 2: Observe in advance the upper and lower limits of the overhead crane lifting mechanism and the number of turns of the sleeve body 6 corresponding to the winding and releasing of the cable 11, and use this number of turns plus the reserved circle of the sleeve body 6 as the torque circle. For example, if the number of turns corresponding to the upper and lower limits is seven, and the reserved circle is three, then the torque circle of the sleeve body 6 is ten. Step 3, place the bottom plate on the mounting plate 1201 against the outlet box 3, thread the second bolt onto the outlet box 3, install the two half gears on the outer surface of the rotating shaft 4, adjust the positions and angles of the two half gears so that the half gears can mesh with the driving small gear, pass the third bolt through the corresponding pair of ear plates, and screw on the second nut to splice the driven large gear 1205; Step 4, the sleeve body 6 is driven to rotate by rotating the turntable 1203, so that the sleeve body 6 rotates ten times to reach the torque circle of the sleeve body 6, and the connecting hole 14 is kept at the lowest point, and the handle 1303 is rotated, and the handle 1303 drives the screw rod 1302 to rotate, and the screw rod 1302 drives the limit plate 1304 to move downward, and the limit plate 1304 abuts against the rotating rod 1202 to limit the rotating rod 1202, thereby temporarily locking the torque circle of the sleeve body 6; Step 5: Use the iron wire 901 to pass through the connection holes 14 on the corresponding sides of the sleeve body 6, and wrap both ends of the iron wire 901 around the cross bar 8 to achieve long-term locking of the torque ring of the sleeve body 6; Step 6, remove the second bolt on the outlet box 3, remove the mounting plate 1201 from the outlet box 3, rotate the second nut to remove the second nut from the third bolt, then remove the third nut from the ear plate, remove the driven large gear 1205 from the rotating shaft 4, and then transport the new cable reel to the overhead crane; Step 7, unscrew the anchor bolts of the old cable reel on the overhead crane, remove the cable 11 from the old sleeve body 6, install the removed cable 11 on the new sleeve body 6, install the new cable reel on the overhead crane, remove the wire 901 wrapped around the cross bar 8, so that the sleeve body 6 can rotate freely.

[0052] The present embodiment uses an iron wire that passes through the first connecting hole and then is wrapped around the cross bar 8 to lock the cable reel. This is safer than using a crowbar to fix the cable reel. The cable reel will not rotate due to the movement of the crowbar. At the same time, the torque ring of the cable coil can be locked on the ground, avoiding the danger of the torque ring of the cable coil on the overhead crane. It is also convenient to lock the torque ring of the cable coil when idle, reducing the construction time required for replacing the cable coil. Embodiment 3

[0053] Please refer to Figures 1 to 4 The locking member 900 in this embodiment includes a connecting plate 902 installed on the outer surface of the cross bar 8, a first bolt 903 slidably connected to the inside of the connecting plate 902, and a first nut 904 threadedly connected to the outer surface of the first bolt 903. A through hole is opened in the connecting plate 902 for the first bolt 903 to pass through. The first bolt 903 passes through the through hole on the connecting plate 902 and the connecting hole 14 and is locked by the first nut 904.

[0054] A method for replacing a cable drum for an overhead crane in a safe and fast manner online is more efficient and convenient when the torque ring of the sleeve body 6 is locked in advance on the ground. The method comprises the following steps: Step 1, place the new sleeve body 6 on the ground, rotate the new sleeve body 6 to make the spiral spring 5 in a natural state, open at least one set of connection holes 14 at the lowest points of the baffles 7 on the left and right sides of the new sleeve body 6, and loosen the connection bolts of each terminal on the new sleeve body 6; Step 2: Observe in advance the upper and lower limits of the overhead crane lifting mechanism and the number of turns of the sleeve body 6 corresponding to the winding and releasing of the cable 11, and use this number of turns plus the reserved circle of the sleeve body 6 as the torque circle. For example, if the number of turns corresponding to the upper and lower limits is seven, and the reserved circle is three, then the torque circle of the sleeve body 6 is ten. Step 3, place the bottom plate on the mounting plate 1201 against the outlet box 3, thread the second bolt onto the outlet box 3, install the two half gears on the outer surface of the rotating shaft 4, adjust the positions and angles of the two half gears so that the half gears can mesh with the driving small gear, pass the third bolt through the corresponding pair of ear plates, and screw on the second nut to splice the driven large gear 1205; Step 4, the sleeve body 6 is driven to rotate by rotating the turntable 1203, so that the sleeve body 6 rotates ten times to reach the torque circle of the sleeve body 6, and the connecting hole 14 is kept at the lowest point, and the handle 1303 is rotated, and the handle 1303 drives the screw rod 1302 to rotate, and the screw rod 1302 drives the limit plate 1304 to move downward, and the limit plate 1304 abuts against the rotating rod 1202 to limit the rotating rod 1202, thereby temporarily locking the torque circle of the sleeve body 6; Step 5: Use the first bolt 903 to pass through the connection holes 14 on the corresponding sides of the sleeve body 6 and the through hole on the connecting plate 902, and thread the first nut 904 onto the outer surface of the first bolt 903 to achieve long-term locking of the torque ring of the sleeve body 6; Step 6, remove the second bolt on the outlet box 3, remove the mounting plate 1201 from the outlet box 3, rotate the second nut to remove the second nut from the third bolt, then remove the third nut from the ear plate, remove the driven large gear 1205 from the rotating shaft 4, and then transport the new cable reel to the overhead crane; Step 7, unscrew the anchor bolts of the old cable reel on the overhead crane, remove the cable 11 from the old sleeve body 6, install the removed cable 11 on the new sleeve body 6, install the new cable reel on the overhead crane, unscrew the first nut 904 on the first bolt 903, and pull the first bolt 903 out of the connecting hole 14, so that the sleeve body 6 can rotate freely.

[0055] The connecting plate 902 and the baffle plate 7 can be locked together by the first bolt 903 and the first nut 904, thereby preventing the baffle plate 7 and the sleeve body 6 from rotating due to the deformation recovery of the spiral spring 5. Compared with the first embodiment, this method is simpler to operate and has higher stability.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable reel for easy replacement on an overhead crane, comprising two bottom plates (1), a vertical plate (2) being mounted on the top side of the bottom plate (1), a terminal box (3) being disposed on the vertical plate (2), a rotating shaft (4) being mounted inside the two vertical plates (2), a spiral spring (5) being rotatably connected to the outer surface of the rotating shaft (4), a sleeve body (6) being rotatably connected to the outer surface of the rotating shaft (4), baffles (7) being mounted on the left and right sides of the sleeve body (6), and a cross bar (8) being mounted on the opposite side of the two vertical plates (2), characterized in that: At least one pair of connection holes (14) is formed on the baffle plate (7), a locking piece (900) is formed on the cross bar (8), the baffle plate (7) is connected to the cross bar (8) by the locking piece (900) passing through the connection holes (14), an auxiliary rotating assembly (1200) is detachably provided on the outlet box (3) and the rotating shaft (4), and a limit assembly (1300) is provided on the auxiliary rotating assembly (1200).

2. The cable reel for easy replacement on an overhead travelling crane according to claim 1, characterized in that: The locking member (900) is two iron wires (901) with one end wound around the cross bar (8); the iron wires (901) pass through the corresponding connecting holes (14) and are then wound around the cross bar (8).

3. The cable reel for easy replacement on an overhead travelling crane according to claim 1, characterized in that: The locking member (900) comprises a connecting plate (902) mounted on the outer surface of the crossbar (8), a first bolt (903) slidably connected to the inside of the connecting plate (902), and a first nut (904) threadedly connected to the outer surface of the first bolt (903); a through hole for the first bolt (903) to pass through is provided in the connecting plate (902); the first bolt (903) passes through the through hole on the connecting plate (902) and the connecting hole (14) and is then locked by the first nut (904).

4. The cable reel for easy replacement on an overhead travelling crane according to claim 1, characterized in that: The auxiliary rotating assembly (1200) comprises a mounting plate (1201) detachably mounted on the outlet box (3); a rotating rod (1202) is rotatably connected to the interior of the mounting plate (1201); a rotating disk (1203) is mounted on one end of the rotating rod (1202); a driving pinion (1204) is mounted on the outer surface of the rotating rod (1202); the auxiliary rotating assembly (1200) further comprises a driven large gear (1205) detachably mounted on the outer surface of the rotating shaft (4); the driving pinion (1204) and the driven large gear (1205) are meshed with each other.

5. The cable reel for easy replacement on an overhead travelling crane according to claim 4, characterized in that: A bottom plate is mounted on the bottom end of the mounting plate (1201), and the bottom plate is mounted on the top side of the outlet box (3) via a second bolt.

6. The cable reel for easy replacement on an overhead travelling crane according to claim 4, characterized in that: The driven large gear (1205) comprises two half gears, a plurality of pairs of ear plates mounted on both sides of the half gears, a third bolt passing through the interior of each set of the ear plates, and a second nut threadedly connected to the outer surface of the third bolt.

7. The cable reel for easy replacement on an overhead travelling crane according to claim 1, characterized in that: The limit assembly (1300) comprises a transverse plate (1301) mounted on one side of the mounting plate (1201); the internal thread of the transverse plate (1301) is connected to a screw rod (1302); a handle (1303) is mounted on one end of the screw rod (1302); the other end of the screw rod (1302) away from the handle (1303) is rotatably connected to a limit plate (1304); a limit rod (1305) is slidably connected inside the transverse plate (1301); one end of the limit rod (1305) is connected to a side corresponding to the limit plate (1304); and the limit plate (1304) can limit the rotating rod (1202) by abutting against the outer surface of the rotating rod (1202).

8. The cable reel for easy replacement on an overhead travelling crane according to claim 7, characterized in that: The auxiliary rotating assembly (1200) further comprises a fixed plate (1206) mounted on the transverse plate (1301), and the rotating rod (1202) is rotatably connected to the fixed plate (1206) via a bearing seat.

9. A cable reel for easy replacement on an overhead travelling crane according to any one of claims 1 to 7, characterized in that: An inspection port (10) is provided on opposite sides of the two baffles (7), and the outer surface of the sleeve body is used for winding a cable (11).

10. A method for replacing a cable drum that is easy to replace on an overhead travelling crane according to any one of claims 1 to 9, characterized in that: It is more efficient and convenient to lock the torque ring of the sleeve body (6) in advance on the ground. The method comprises the following steps: Step 1, place the new sleeve body (6) on the ground, so that the spiral spring (5) is in a natural state, and at least one set of connection holes (14) are opened at the lowest points of the baffles (7) on the left and right sides of the new sleeve body (6), and at the same time, the connection bolts of each terminal on the new sleeve body (6) are loosened; Step 2: Observe in advance the upper limit and lower limit of the overhead crane lifting mechanism and the number of coils of the sleeve body (6) corresponding to the coiling and releasing of the cable (11), and use this number of coils plus the reserved coil of the sleeve body (6) as the torque coil; Step 3, installing the auxiliary rotating assembly (1200) on the outlet box (3) and connecting the auxiliary rotating assembly (1200) to the rotating shaft (4); Step 4: By rotating the rotating disk (1203) on the auxiliary rotating assembly (1200), the rotating disk (1203) drives the sleeve body (6) to rotate, so that the sleeve body (6) rotates to a specified torque circle, and at the same time, the connecting hole (14) is kept at the lowest point, and the sleeve body (6) is temporarily locked to the torque circle by using the limiting mechanism (1300); Step 5: Use the iron wire (901) to pass through the corresponding connection holes (14) on both sides of the sleeve body (6), and use the locking member (9) to connect the baffle (7) and the cross bar (8); Step 6: Remove the auxiliary rotating assembly (1200) and the limiting assembly (1300) from the new cable drum, and transport the new cable drum to the overhead traveling crane; Step 7. Unscrew the anchor bolts of the old cable drum on the overhead crane, remove the cable (11) from the old sleeve body (6), install the removed cable (11) on the new sleeve body (6), install the new cable drum on the overhead crane, and remove the wire (901) wound on the crossbar (8).

Images