Tower crane structure

Abstract

The invention relates to the technical field of building machinery, and discloses a tower crane structure which comprises a stand column, a tower cap is rotationally arranged at the top of the stand column, a lifting arm and a balance arm are installed on the two sides of the tower cap correspondingly, a hoisting mechanism is arranged on the lifting arm in a sliding mode, and the lifting arm and the balance arm are both connected to the top of the tower cap through inhaul cables; a bed board is laid on the cargo boom, a winding mechanism is mounted on the bed board, a roller rail is arranged on the bed board between the winding mechanism and the tower cap, and a roller feeding mechanism is mounted at the bottom of the cargo boom. According to the tower crane structure, the problems that in the prior art, when a tower crane is maintained, a winding drum is fixed to the tower crane along with a winding mechanism and is difficult to replace, and only a steel wire rope can be simply replaced, so that when the tower crane runs for a long time, the winding drum is greatly abraded, and cracks and deformation occur in serious cases are solved; and potential safety hazards are brought to the operation of the tower crane.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, and particularly to a tower crane structure. Background Art

[0002] A tower crane is a lifting device with a metal frame as the main body and supplemented by an electrical system and equipment as the drive, also known as a tower-type crane. It is a commonly used lifting device on construction sites. The tower crane has a large working space and is mainly used for the vertical and horizontal transportation of materials and the installation of building components in building construction. With the continuous advancement of infrastructure construction in China, the demand for tower cranes is also increasing continuously.

[0003] As a lifting device, the steel wire rope is the main suspension structure of the tower crane. During the operation of the tower crane, the steel wire rope will be wound with the drum and continuously worn together with it. Therefore, both the steel wire rope and the drum are extremely prone to damage and need to be replaced regularly. In the existing technology, when the tower crane is maintained, the drum is fixed on the tower crane together with the winding mechanism and is difficult to replace. Only the steel wire rope can be simply replaced. As a result, when the tower crane operates for a long time, the drum will be severely worn, and in severe cases, cracks and deformations will occur, posing a safety hazard to the operation of the tower crane. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the invention provides a tower crane structure to solve the problems mentioned in the above background.

[0005] The invention provides the following technical solutions: A tower crane structure includes: a column, a tower cap is rotatably provided at the top of the column, a boom and a balance arm are respectively installed on both sides of the tower cap, a hoisting mechanism is slidably provided on the boom, and both the boom and the balance arm are connected to the top of the tower cap through cables;

[0006] A floor plate is laid on the boom, a winding mechanism is installed on the floor plate, a roller track is provided on the floor plate between the winding mechanism and the tower cap, a roller feeding mechanism is installed at the bottom of the boom, and a filling groove plate is provided on the boom, and the position of the filling groove plate corresponds to the structural position on the roller feeding mechanism;

[0007] The boom includes a bottom frame as the supporting main body, a first top frame and a second top frame. The end of the first top frame shrinks and is welded to the second top frame. A mounting frame is welded to the front end of the first top frame. The mounting frame and the front end of the bottom frame are jointly installed on the tower cap. A frame structure is formed by welding a number of strengthening supports between the first top frame, the second top frame and the bottom frame.

[0008] Preferably, the boom also includes a connecting rod welded between the first top frame and the bottom frame, the middle portion of the connecting rod is connected to the mounting frame by a welded reinforcing rod, a mounting seat is sleeved on the structure of the tower cap close to the boom side, and the mounting frame is installed on the mounting seat.

[0009] Preferably, the feeding roller mechanism includes a bottom connecting plate installed at the bottom of the lifting arm, a vertical frame is installed at the bottom of the bottom connecting plate, a supporting arm is rotatably provided on the side of the vertical frame on the bottom connecting plate through a connecting seat, a mounting bucket is installed on the side of the supporting arm close to the bottom end, connecting supports are provided on both the vertical frame and the supporting arm, a rotating shaft is rotatably provided at the bottom end of the vertical frame, a hydraulic cylinder is provided in the middle of the rotating shaft, and the end of the hydraulic cylinder piston rod is rotatably provided on the connecting support on the supporting arm.

[0010] Preferably, a cavity groove for carrying the upper structure of the winding mechanism is formed on the mounting bucket, and guide shaft grooves are formed on both sides of the cavity groove.

[0011] Preferably, the slot-filling plate comprises two brackets welded to the lifting arm, one of the brackets is provided with a rotation slot, a baffle is rotatably arranged inside the rotation slot, and the position of the baffle corresponds to the position of the structure on the feeding roller mechanism.

[0012] Preferably, baffle bars are provided on the side surfaces of the two support frames and the lifting arm, and the bottom of the baffle plate close to the outer edge is overlapped on the baffle bars.

[0013] Preferably, the winding mechanism includes a base plate mounted on a deck, a support is provided on the base plate, a pressure seat is rotatably provided on the support via an adapter, a reel is provided at the clamping position of the pressure seat and the support, and the shaft core of the reel is clamped between the pressure seat and the support via a sleeved bearing, a motor is installed on the pressure seat, the output shaft of the motor passes through the pressure seat and is provided with a driving mechanism, a coupling mechanism is provided on the driving mechanism, an end of the coupling mechanism passes through the structure of the driving mechanism and is inserted on the shaft core of the reel, and the support and the pressure seat are integrally mounted by providing a mounting bolt.

[0014] Preferably, the driving mechanism includes a first moving wheel, which is sleeved on the output shaft of the motor passing through the pressure seat, and a support wheel frame is installed on the pressure seat, and a second moving wheel is rotatably arranged on the support wheel frame, and the position of the second moving wheel is coaxially arranged with the axis core of the reel, the first moving wheel and the second moving wheel are connected by a sleeved driving belt, and the coupling mechanism is arranged on the second moving wheel.

[0015] Preferably, the shaft coupling mechanism includes a shaft cylinder rotatably arranged on the supporting wheel frame. A through-shaped second hexagonal groove is formed inside the shaft cylinder. A hexagonal prism is inserted into the second hexagonal groove. One end of the hexagonal prism away from the second hexagonal groove is integrally provided with a rotating rod. An end cover is arranged at the end of the rotating rod. A knob is rotatably sleeved on the surface of the rotating rod. An external screw sleeve is arranged on the side of the knob. The external screw sleeve is threadedly connected to the shaft cylinder.

[0016] Preferably, the reel includes a cylindrical roller. A coaxial through-shaped first hexagonal groove is formed on the axis of the cylindrical roller. A rail groove is formed on the outer edge of the cylindrical roller. The inner wall of the rail groove is in rolling connection with the roller rail.

[0017] Compared with the prior art, the invention has the following beneficial effects:

[0018] 1. In this tower crane structure, by installing a feeding roller mechanism on the boom, the reel to be replaced is lifted onto the feeding roller mechanism. Then, by the operation of the feeding roller mechanism, the filling groove plate on the boom is pushed open, so that the reel placed in the feeding roller mechanism can roll onto the roller rail. After the reel is removed and replaced, the replaced reel is rolled back into the feeding roller mechanism, and then lifted away by the lifting and pulling mechanism. This enables the reel on the tower crane to be replaced conveniently, avoiding significant wear of the reel due to long-term use, and thus improving the safety of the tower crane operation.

[0019] 2. In this tower crane structure, by setting up a winding mechanism, a convenient opening and closing structure is formed by the support and the pressure seat on the base plate. When the reel clamped between the support and the pressure seat is disassembled and replaced, it can directly roll from the base plate onto the roller rail after being removed, improving the convenience of reel disassembly and replacement. There is no need to carry the heavy reel. Just by pushing, the reel can be easily moved and replaced, avoiding the situation where the maintenance and replacement personnel stumble when carrying the reel, and further improving the safety of the maintenance and replacement personnel during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the invention;

[0021] Figure 2 It is a schematic diagram of the boom of the invention together with the installation mechanism thereon;

[0022] Figure 3 It is a schematic diagram of the installation position of the boom of the invention;

[0023] Figure 4 It is a schematic diagram of the feeding roller mechanism of the invention;

[0024] Figure 5 It is a schematic diagram of the boom frame structure of the invention;

[0025] Figure 6Schematic diagram of the operating structure of the roller feeding mechanism on the boom of the invention;

[0026] Figure 7 Schematic diagram of the sectional structure of the boom of the invention;

[0027] Figure 8 For the invention Figure 7 Enlarged structure diagram at position A in

[0028] Figure 9 Schematic diagram of the structure of the winding mechanism of the invention;

[0029] Figure 10 Schematic diagram of the structure for replacing the drum of the winding mechanism of the invention;

[0030] Figure 11 Schematic diagram of the disassembled structure of the coupling mechanism of the invention;

[0031] Figure 12 Schematic diagram of the structure of the drum rolling on the roller track of the invention.

[0032] In the figure: 1, column; 2, tower cap; 3, boom; 31, chassis; 32, first top frame; 33, second top frame; 34, mounting frame; 35, connecting rod; 36, strengthening rod; 37, mounting seat; 38, strengthening support; 4, balance arm; 5, winding mechanism; 51, base plate; 52, support; 53, pressing seat; 54, motor; 55, drum; 551, barrel roller; 552, first hexagonal groove; 553, rail groove; 56, driving mechanism; 561, first driving wheel; 562, support wheel frame; 563, second driving wheel; 564, driving belt; 57, coupling mechanism; 571, shaft cylinder; 572, second hexagonal groove; 573, hexagonal prism; 574, rotating rod; 575, end cover; 576, external screw sleeve; 577, knob; 58, mounting bolt; 6, roller feeding mechanism; 61, bottom connecting plate; 62, vertical frame; 63, rotating shaft; 64, feeding arm; 65, mounting bucket; 66, hydraulic cylinder; 67, connecting brace; 68, guide shaft groove; 7, filling plate; 71, support frame; 72, rotating groove; 73, baffle; 74, retaining strip; 8, lifting and pulling mechanism; 9, decking; 10, roller track. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the invention.

[0034] Please refer to Figures 1-12A tower crane structure comprises: a column 1, a tower cap 2 is rotatably provided on the top of the column 1, a lifting arm 3 and a balancing arm 4 are respectively installed on both sides of the tower cap 2, a lifting mechanism 8 is slidably provided on the lifting arm 3, and the lifting arm 3 and the balancing arm 4 are connected to the top of the tower cap 2 by a cable;

[0035] A floor plate 9 is provided on the lifting arm 3, a winding mechanism 5 is installed on the floor plate 9, a roller rail 10 is provided on the floor plate 9 between the winding mechanism 5 and the tower cap 2, a roller delivery mechanism 6 is installed at the bottom of the lifting arm 3, and a slot filling plate 7 is provided on the lifting arm 3, and the position of the slot filling plate 7 corresponds to the structural position on the roller delivery mechanism 6;

[0036] The lifting arm 3 includes a base frame 31 as a supporting body, a first top frame 32 and a second top frame 33. The end of the first top frame 32 is retracted and welded to the second top frame 33. A mounting frame 34 is welded to the front end of the first top frame 32. The mounting frame 34 is installed on the tower cap 2 together with the front end of the base frame 31. A frame structure is formed between the first top frame 32, the second top frame 33 and the base frame 31 by welding a number of reinforcing supports 38.

[0037] Among them, the boom 3 also includes a connecting rod 35 welded between the first top frame 32 and the bottom frame 31, the middle part of the connecting rod 35 is connected to the mounting frame 34 by welding a reinforcing rod 36, and a mounting seat 37 is sleeved on the structure of the tower cap 2 close to the boom 3, and the mounting frame 34 is installed on the mounting seat 37. By arranging the mounting frame 34 on the boom 3 and installing it with the tower cap 2, and cooperating with the structure of the bottom frame 31 installed on the tower cap 2, the stability of the connection between the boom 3 and the tower cap 2 is further increased, and the load-bearing capacity of the boom 3 is improved.

[0038] Among them, the feeding roller mechanism 6 includes a bottom connecting plate 61 installed at the bottom of the lifting arm 3, a hanging frame 62 is installed at the bottom of the bottom connecting plate 61, and a supporting arm 64 is rotatably arranged on the side of the hanging frame 62 through a transfer seat on the bottom connecting plate 61, and a loading bucket 65 is installed on the side of the supporting arm 64 near the bottom end, and a connecting support 67 is provided on both the hanging frame 62 and the supporting arm 64. A rotating shaft 63 is rotatably arranged at the bottom end of the hanging frame 62, and a hydraulic cylinder 66 is provided in the middle of the rotating shaft 63. The end of the piston rod of the hydraulic cylinder 66 is rotatably arranged on the connecting support 67 on the supporting arm 64. By setting the feeding roller mechanism 6, when replacing the reel 55 on the winding mechanism 5, the lifting mechanism 8 can be used to lift the new reel 55 into the loading bucket 65, and then the operation of the hydraulic cylinder 66 can be used to support the loading bucket 65 and pass it through the filling slot plate 7, so that the reel 55 is stably placed on the lifting arm 3, which is convenient for replacing the old reel 55.

[0039] Among them, a cavity groove for supporting the structure of the winding mechanism 5 is opened on the loading bucket 65, and guide shaft grooves 68 are opened on both sides of the cavity groove. The old and new reels 55 to be replaced are placed through the initial cavity groove, so that the old and new reels 55 can be gradually replaced. Then, by opening the guide shaft groove 68, when the old and new reels 55 are placed in the cavity groove, the axis core of the reel 55 can be limited, thereby improving the stability of the loading bucket 65 when lifting the reel 55.

[0040] Among them, the slot filling plate 7 includes two supports 71 welded to the boom 3, one of the supports 71 is provided with a rotation slot 72, and a baffle 73 is rotatably arranged inside the rotation slot 72, and the position of the baffle 73 corresponds to the position of the structure on the roller feeding mechanism 6. By arranging two supports 71 on the boom 3, a channel for the reel 55 to pass through can be opened on the boom 3 by the supports 71, and then baffles 73 are arranged on the two supports 71 to block the channel for the reel 55 to pass through, so as to avoid danger when maintenance personnel pass by.

[0041] Among them, baffle bars 74 are arranged on the sides of the two support frames 71 and the boom 3, and the bottom of the baffle plate 73 close to the outer edge is overlapped on the baffle bar 74. By setting the baffle bar 74, the baffle plate 73 can be embedded in the boom 3, so that the top of the baffle plate 73 and the deck 9 installed on the boom 3 are maintained on the same plane, so that the installed roller rails 10 are at the same height, which is convenient for pushing the reel 55 to move.

[0042] The winding mechanism 5 includes a base plate 51 mounted on the deck 9, a support 52 is provided on the base plate 51, a pressure seat 53 is rotatably provided on the support 52 through an adapter, a reel 55 is provided at the clamping position of the pressure seat 53 and the support 52, and the shaft core of the reel 55 is clamped between the pressure seat 53 and the support 52 through a sleeve bearing, a motor 54 is installed on the pressure seat 53, the output shaft of the motor 54 passes through the pressure seat 53 and is provided with a driving mechanism 56, and a coupling is provided on the driving mechanism 56 Structure 57, the end of the connecting mechanism 57 passes through the structure of the driving mechanism 56 and is inserted on the shaft core of the reel 55, and the support 52 and the pressure seat 53 are installed together by setting a mounting bolt 58. By setting the pressure seat 53 and the support 52, the shaft core of the reel 55 is clamped between the pressure seat 53 and the support 52. When the reel 55 needs to be replaced, it is only necessary to flip the pressure seat 53 using the adapter seat to quickly disassemble and assemble the reel 55, which improves the convenience of replacing the reel 55.

[0043] Among them, the driving mechanism 56 includes a first moving wheel 561, which is sleeved on the output shaft of the motor 54 that passes through the pressure seat 53. A support wheel frame 562 is installed on the pressure seat 53, and a second moving wheel 563 is rotatably arranged on the support wheel frame 562. The position of the second moving wheel 563 is coaxially arranged with the axis core of the reel 55. The first moving wheel 561 and the second moving wheel 563 are connected by a driving belt 564 sleeved on them. The coupling mechanism 57 is arranged on the second moving wheel 563. By setting the driving mechanism 56, the motor 54 can transmit power to the reel 55 clamped between the pressure seat 53 and the support 52 through the driving mechanism 56, thereby controlling the reel 55 to reel in the wire rope. At the same time, the second moving wheel 563 is installed on the pressure seat 53 by using the support wheel frame 562, so that the driving mechanism 56 can be flipped together with the pressure seat 53 when the reel 55 is replaced.

[0044] Among them, the coupling mechanism 57 includes a shaft cylinder 571 rotatably set on the support wheel frame 562, the interior of the shaft cylinder 571 is provided with a through second hexagonal groove 572, the interior of the second hexagonal groove 572 is inserted with a hexagonal column 573, the end of the hexagonal column 573 away from the second hexagonal groove 572 is integrally provided with a rotating rod 574, the end of the rotating rod 574 is provided with an end cover 575, the surface of the rotating rod 574 is rotatably sleeved with a knob 577, the side of the knob 577 is provided with an outer screw sleeve 576, and the outer screw sleeve 576 is threadedly connected to the shaft cylinder 571. By setting the coupling mechanism 57, after disassembling and replacing the reel 55, the insertion of the hexagonal column 573 can be used to quickly connect the reel 55 to the second moving wheel 563, thereby completing the installation of the reel 55 without wasting time on correction.

[0045] Among them, the reel 55 includes a drum roller 551, and a first hexagonal groove 552 that is coaxially connected is opened on the axis core of the drum roller 551, and a track groove 553 is opened on the outer edge of the drum roller 551. The inner wall of the track groove 553 is rollingly connected with the roller rail 10. When the new and old reel 55 are replaced, the rolling of the track groove 553 and the roller rail 10 is used to limit the moving direction of the reel 55, which not only improves the ease of movement of the reel 55, but also prevents the reel 55 from accidentally falling from the gap on the lifting arm 3, thereby improving the safety of the reel 55 when being replaced.

[0046] Working principle: when replacing the reel 55 of the winding mechanism 5 on the crane arm 3, first use the lifting mechanism 8 to lift the new reel 55 to the roller delivery mechanism 6. Through the operation of the roller delivery mechanism 6, the slot filling plate 7 is pushed open to deliver the reel 55 to the crane arm 3. Then the roller delivery mechanism 6 is reset, and the old reel 55 is removed and replaced with a new reel 55. After the replacement is completed, the old reel 55 is sent into the roller delivery mechanism 6, and the old reel 55 is lifted away by the lifting mechanism 8 to complete the replacement.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tower crane structure, characterized in that: include: A column (1), a tower cap (2) is rotatably provided on the top of the column (1), a lifting arm (3) and a balancing arm (4) are respectively installed on both sides of the tower cap (2), a lifting mechanism (8) is slidably provided on the lifting arm (3), and the lifting arm (3) and the balancing arm (4) are both connected to the top of the tower cap (2) by a cable; The lifting arm (3) is provided with a floor plate (9), a winding mechanism (5) is installed on the floor plate (9), a roller rail (10) is provided on the floor plate (9) between the winding mechanism (5) and the tower cap (2), a roller delivery mechanism (6) is installed at the bottom of the lifting arm (3), and a slot filling plate (7) is provided on the lifting arm (3), and the position of the slot filling plate (7) corresponds to the structural position on the roller delivery mechanism (6); The lifting arm (3) comprises a base frame (31) as a supporting body, a first top frame (32) and a second top frame (33); the end of the first top frame (32) is contracted and welded to the second top frame (33); a mounting frame (34) is welded to the front end of the first top frame (32); the mounting frame (34) is installed on the tower cap (2) together with the front end of the base frame (31); a frame structure is formed between the first top frame (32) and the second top frame (33) and the base frame (31) by welding a plurality of reinforcing supports (38).

2. A tower crane structure according to claim 1, characterized in that: The boom (3) further comprises a connecting rod (35) welded between the first top frame (32) and the bottom frame (31); the middle portion of the connecting rod (35) is integrally connected to the mounting frame (34) by means of a welded reinforcing rod (36); a mounting seat (37) is sleeved on the structure of the tower cap (2) on one side close to the boom (3); and the mounting frame (34) is mounted on the mounting seat (37).

3. A tower crane structure according to claim 1, characterized in that: The conveying roller mechanism (6) comprises a bottom connecting plate (61) mounted on the bottom of the lifting arm (3), a vertical frame (62) being mounted on the bottom of the bottom connecting plate (61), a supporting arm (64) being rotatably mounted on the side of the vertical frame (62) via a transfer seat on the bottom connecting plate (61), a mounting bucket (65) being mounted on the side of the supporting arm (64) close to the bottom end, a connecting support (67) being mounted on both the vertical frame (62) and the supporting arm (64), a rotating shaft (63) being rotatably mounted on the bottom end of the vertical frame (62), a hydraulic cylinder (66) being mounted in the middle of the rotating shaft (63), and an end of a piston rod of the hydraulic cylinder (66) being rotatably mounted on the connecting support (67) on the supporting arm (64).

4. A tower crane structure according to claim 3, characterized in that: The receiving bucket (65) is provided with a cavity groove for carrying the upper structure of the winding mechanism (5), and guide shaft grooves (68) are provided on both sides of the cavity groove.

5. A tower crane structure according to claim 1, characterized in that: The slot filling plate (7) comprises two brackets (71) welded to the lifting arm (3), one of the brackets (71) is provided with a rotation slot (72), a baffle (73) is rotatably arranged inside the rotation slot (72), and the position of the baffle (73) corresponds to the position of the structure on the feeding roller mechanism (6).

6. A tower crane structure according to claim 5, characterized in that: The sides of the two support frames (71) and the lifting arm (3) are both provided with baffles (74), and the bottom of the baffle plate (73) close to the outer edge is overlapped on the baffles (74).

7. A tower crane structure according to claim 1, characterized in that: The winding mechanism (5) comprises a base plate (51) mounted on a deck (9), a support (52) being arranged on the base plate (51), a pressure seat (53) being rotatably arranged on the support (52) via an adapter, a reel (55) being arranged at the clamping position between the pressure seat (53) and the support (52), and the shaft core of the reel (55) being clamped between the pressure seat (53) and the support (52) via a sleeved bearing, a motor (54) being mounted on the pressure seat (53), an output shaft of the motor (54) passing through the pressure seat (53) and a driving mechanism (56) being arranged, a coupling mechanism (57) being arranged on the driving mechanism (56), an end of the coupling mechanism (57) passing through the structure of the driving mechanism (56) and being inserted on the shaft core of the reel (55), and the support (52) and the pressure seat (53) being integrally mounted by means of a mounting bolt (58).

8. A tower crane structure according to claim 7, characterized in that: The driving mechanism (56) comprises a first moving wheel (561), the first moving wheel (561) is sleeved on the output shaft of the motor (54) and passes through the pressure seat (53), a supporting wheel frame (562) is installed on the pressure seat (53), a second moving wheel (563) is rotatably arranged on the supporting wheel frame (562), the position of the second moving wheel (563) is coaxially arranged with the axis core of the reel (55), the first moving wheel (561) and the second moving wheel (563) are connected in transmission by a sleeved driving belt (564), and the coupling mechanism (57) is arranged on the second moving wheel (563).

9. A tower crane structure according to claim 8, characterized in that: The coupling mechanism (57) comprises a shaft cylinder (571) rotatably arranged on a support wheel frame (562), a through second hexagonal groove (572) being provided inside the shaft cylinder (571), a hexagonal column (573) being inserted inside the second hexagonal groove (572), a rotating rod (574) being integrally arranged at one end of the hexagonal column (573) away from the second hexagonal groove (572), an end cover (575) being arranged at the end of the rotating rod (574), a knob (577) being rotatably sleeved on the surface of the rotating rod (574), an outer screw sleeve (576) being arranged on the side of the knob (577), and the outer screw sleeve (576) being threadedly connected to the shaft cylinder (571).

10. A tower crane structure according to claim 7, characterized in that: The reel (55) comprises a drum roller (551), the axis core of which is provided with a first hexagonal groove (552) which is coaxially connected thereto, the outer edge of which is provided with a track groove (553), the inner wall of which is rollingly connected to a roller rail (10).

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