A tower crane base

Abstract

The present invention relates to the technical field of tower cranes, and in particular to a tower crane base, comprising a lower support assembly, an upper support assembly, a plurality of adjustment assemblies and a plurality of counterweight assemblies, wherein the plurality of adjustment assemblies are inserted at intervals in the circumferential direction at the lower part of the lower support assembly, a group of counterweight assemblies corresponds to a group of adjustment assemblies, the counterweight assemblies are arranged at the upper end of the adjustment assemblies, the upper support assembly is arranged on the lower support assembly, the adjustment assembly comprises a main slide rail and two auxiliary slide rails, one end of the main slide rail is plugged into a connecting seat, and the other end is movably connected to the auxiliary slide rail through a connecting rod, the counterweight assembly comprises a T-shaped plate, and rotatable counterweight blocks are cross-stacked on the upper end of the T-shaped plate in sequence. In the present invention, the upper support assembly and the lower support assembly are plugged into each other for better stability, and the adjustable counterweight assembly is used to expand the support area of ​​the base, further enhancing the stability of the lower support assembly, and all parts are detachably connected, so that disassembly and assembly are faster, making the replacement of the base more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of tower cranes, and in particular to a tower crane base. Background Art

[0002] Tower crane, also known as tower crane, originated in Western Europe. It is a rotating crane with a boom mounted on the top of a tall tower. It has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system; among them, the metal structure includes the tower body, boom and base.

[0003] In order to ensure the safety of tower cranes during use, the base of the tower crane is usually fixed to a set concrete foundation in the prior art. However, the traditional concrete foundation makes the base of the tower crane have no adjustment function, and the installation and disassembly are time-consuming and labor-intensive. In addition, an iron counterweight plate can be placed on the base frame of the tower crane to reinforce the stability of the base of the tower crane. However, the weight of the iron counterweight plate is not as heavy as the concrete foundation. When the crane needs to be modified and the lifting load is increased, the stability is not as good as the bottom stability of the concrete foundation. Moreover, both the concrete foundation and the iron counterweight plate can only be installed before the tower crane is lifted, and cannot be adjusted during the lifting process. Therefore, there is still a risk of collapse during the lifting construction of the tower crane. Summary of the invention

[0004] The object of the present invention is to provide a tower crane base to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a tower crane base, comprising a lower support assembly, an upper support assembly, multiple groups of adjustment assemblies and multiple groups of counterweight assemblies, the multiple groups of adjustment assemblies are inserted at intervals in the circumferential direction at the lower part of the lower support assembly, one group of counterweight assemblies corresponds to one group of adjustment assemblies, the counterweight assembly is arranged at the upper end of the adjustment assembly, the upper support assembly is arranged on the lower support assembly, the adjustment assembly comprises a main slide rail and two auxiliary slide rails, the two auxiliary slide rails are symmetrically arranged on both sides of the main slide rail, one end of the main slide rail is plugged into the lower support assembly, and the other end is movably connected to the auxiliary slide rail through a connecting rod, the counterweight assembly comprises a T-shaped plate, a first clamping plate and a second clamping plate, a column is fixedly arranged on the middle part of the upper surface of the T-shaped plate, the first clamping plate and the second clamping plate are sequentially inserted into the column and rotatably connected thereto, and a rotatable lower counterweight block and an upper counterweight block are cross-stacked on the first clamping plate and the second clamping plate in turn.

[0006] Furthermore, the adjustment component also includes a limit block and an auxiliary block. A movable screw rod is rotatably arranged in the main slide rail. The lower end of the limit block is connected to the movable screw rod by a thread and is slidably connected to the main slide rail. A slider is slidably arranged on the upper surface of the secondary slide rail. The auxiliary block is rotatably arranged on the upper end of the slider. The middle parts of both sides of the T-shaped plate are plugged into the limit block, and the auxiliary block is slidably connected to both sides of the limit groove.

[0007] Furthermore, two expansion hydraulic cylinders are symmetrically arranged on the upper surface of the T-shaped plate, the cylinder bodies of the expansion hydraulic cylinders are rotatably connected to the T-shaped plate, and the piston rod ends of the two expansion hydraulic cylinders are rotatably connected to the first clamping plate and the second clamping plate respectively.

[0008] Furthermore, a strip hole is formed through the lower part of one end of the main slide rail away from the lower support assembly, an expansion screw rod is rotatably arranged in the strip hole, a connecting piece is slidably arranged in the strip hole, the middle part of the connecting piece is threadedly connected to the expansion screw rod, a receiving hole is formed through the lower part of the auxiliary slide rail, a connecting column is fixedly arranged in the receiving hole, the connecting rod is located between the connecting piece and the auxiliary slide rail, one end of the connecting rod is rotatably connected to the connecting column, and the other end is rotatably connected to the connecting piece.

[0009] Furthermore, a first right-angle plate is fixedly provided at both ends of the first clamping plate, the upper counterweight block is located between the two first right-angle plates, a second right-angle plate is fixedly provided at both ends of the second clamping plate, the lower counterweight block is located between the two second right-angle plates, the lower counterweight block and the upper counterweight block are cross-arranged in groups, and the upper counterweight block in each group is rotatably connected to the lower counterweight block.

[0010] Furthermore, a lower avoidance groove is opened in the middle of the upper surface of the lower counterweight block, and an upper avoidance groove is opened in the middle of the lower surface of the upper counterweight block. The lower avoidance groove and the upper avoidance groove are plugged into each other. The ends of the upper surfaces of the lower counterweight block and the upper counterweight block are fixedly provided with plug posts, and corresponding plug post grooves are opened on the lower surfaces. Two adjacent upper counterweight blocks or lower counterweight blocks are plugged into the plug post grooves through the plug posts.

[0011] Furthermore, the lower support assembly includes a bottom plate and a top plate, and connecting seats are fixedly provided at the four corners of the bottom plate. The upper end of the connecting seat is fixedly connected to the edge of the top plate, and a plurality of positioning rods are fixedly provided at the lower end of the upper support assembly. The lower ends of the positioning rods pass through the top plate and abut against the upper surface of the bottom plate.

[0012] Furthermore, the upper support assembly includes an upper support plate, the upper surface of the positioning rod is fixedly connected to the lower surface of the upper support plate, the lower surface of the positioning rod is provided with a positioning groove, and the lower surface of the top plate is provided with a plurality of slots and holes along the circumferential direction, and the plurality of holes are located outside the plurality of slots. The lower support assembly also includes a connecting anchor rod, the lower end of the connecting anchor rod is inserted into the ground, the lower end of the positioning rod passes through the hole and is plugged into the corresponding connecting anchor rod through the positioning groove, and the top plate is plugged into the corresponding connecting anchor rod through the slot and fixedly connected by a nut.

[0013] Furthermore, a support block corresponding to the connecting seat is provided on the upper surface of the base plate, a driven bevel gear is rotatably provided between the support block and the corresponding connecting seat, a connecting shaft is rotatably provided in the middle of the upper surface of the base plate, an active bevel gear is fixedly provided in the middle of the connecting shaft, the active bevel gear and the driven bevel gear are meshed and transmitted to be connected, a connecting rod is fixedly provided at one end of the driven bevel gear close to the connecting seat, the end of the connecting rod is inserted in the connecting seat and extends in a direction close to the main slide rail, the connecting rod is rotatably connected to the connecting seat, and the connecting rod is connected to the end of the movable screw rod by a spline structure.

[0014] Furthermore, a plurality of supporting hydraulic cylinders are arranged at intervals at the lower part of the secondary slide rail, a supporting plate is fixedly arranged at the end of the piston rod of the supporting hydraulic cylinder, the lower surface of the supporting plate is in contact with the ground, rotating seats are rotatably arranged on both sides of the connecting seat, one end of the secondary slide rail is plugged into and fixedly connected to the rotating seat, and a universal wheel is rotatably arranged at the lower part of the other end, the universal wheel is rollingly connected to the ground, an expansion motor is arranged at the lower part of one end of the main slide rail, and the output shaft of the expansion motor is fixedly connected to the expansion screw rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides a tower crane base, in which a lower support assembly is arranged to be plugged into a corresponding anchor rod, and the lower end of an upper support assembly passes through a top plate and is plugged into a corresponding anchor rod, so that the upper support assembly and the lower support assembly are more stable, and at the same time, a plurality of oblique braces are arranged between the bottom plate and the upper support plate, so that the lower support assembly can better stabilize the upper support assembly, and an adjustable counterweight assembly is matched to expand the supporting area of ​​the tower crane base, further enhancing the stability of the lower support assembly, and all parts are detachably connected, so disassembly and assembly are faster, making replacement of the tower crane base more convenient.

[0017] 2. The tower crane base provided by the present invention has an adjustment component that can make the auxiliary slide rail in each group rotate relative to the main slide rail, so as to increase the supporting area of ​​the T-shaped plate. As the hoisting load-bearing capacity of the tower crane becomes larger and larger, the movable counterweight component is used to increase the supporting area of ​​the entire tower crane base, without the need to stack a large number of counterweight blocks, which is more convenient.

[0018] 3. The present invention provides a tower crane base, in which a counterweight assembly is arranged, which drives the first clamping plate and the second clamping plate to move away from or closer to each other through an expansion hydraulic cylinder, so as to change the angle between the upper counterweight block and the lower counterweight block. As the angle increases, the supporting area at the bottom of the upper counterweight block and the lower counterweight block also increases, so that the support of the counterweight block by the clamping plate is also more stable. When the counterweight needs to be increased and the overall height of the counterweight block increases, the larger supporting area greatly reduces the risk of collapse of the counterweight block, thereby reducing safety hazards.

[0019] 4. The present invention provides a tower crane base, wherein a plurality of reinforcing plates are arranged between the positioning rod and the lower support plate, the reinforcing plates not only support the positioning rod, but also strengthen the stability between the lower support assembly and the upper support assembly, the arranged diagonal braces support the four top corners of the lower end of the upper support plate, and further strengthen the stability of the bottom plate and the upper support plate, while the counterweight assembly stabilizes the bottom plate, and at the same time stabilizes the upper support plate through external anchor rods, diagonal braces and reinforcing plates, thereby ensuring the stability of the tower crane tower body.

[0020] 5. The present invention provides a tower crane base, in which the upper counterweight blocks and the lower counterweight blocks are cross-stacked in sequence, and two adjacent upper counterweight blocks or lower counterweight blocks are plugged into each other, so that the first clamping plate and the second clamping plate can drive all the upper counterweight blocks or lower counterweight blocks to rotate together, thereby increasing the stability of the counterweight blocks, and the number of counterweight groups can be increased or decreased according to the hoisting load-bearing capacity of the tower crane, with higher adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure used in the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention after expansion and adding counterweight;

[0023] Figure 3 This is a schematic diagram of the initial structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the lower support assembly and the upper support assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the lower support assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of a half-section structure of a lower support assembly and an upper support assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the disassembled structure of the adjustment assembly and the counterweight assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the connection structure of the adjustment component of the present invention;

[0029] Fig. 9 This is a schematic structural diagram of the adjustment component of the present invention from another viewing angle;

[0030] Fig.10 This is a schematic diagram of the disassembled structure of the counterweight assembly of the present invention;

[0031] Fig.11 This is a schematic diagram of the connection structure of the counterweight block of the present invention;

[0032] Fig.12 It is a schematic diagram of a partial half-section structure of the regulating component of the present invention.

[0033] In the figure: 1, lower support assembly; 101, inner anchor rod; 102, outer anchor rod; 11, bottom plate; 111, support block; 112, connecting groove; 113, anchor rod hole; 12, top plate; 121, slot; 122, jack; 13, connecting seat; 131, trapezoidal groove; 132, receiving groove; 14, driving motor; 141, active bevel gear; 15, driven bevel gear; 151, connecting rod; 1511, spline groove; 16, connecting shaft; 17, Fixed plate; 171, fixed column; 18, diagonal support; 181, connecting block; 182, plug block; 183, support seat; 19, rotating seat; 191, rotating groove; 2, upper support assembly; 21, upper support plate; 22, upper support seat; 23, mounting groove; 24, lower support plate; 25, positioning rod; 251, positioning groove; 26, reinforcement plate; 3, adjustment assembly; 31, main slide rail; 311, strip groove; 312, moving screw rod; 3121, spline shaft; 3 13, strip hole; 314, expansion screw rod; 315, expansion motor; 316, receiving block; 32, auxiliary slide rail; 321, slider; 322, receiving hole; 323, connecting column; 324, supporting hydraulic cylinder; 325, supporting plate; 326, universal wheel; 33, limit block; 331, moving block; 332, limit strip; 34, auxiliary block; 341, protrusion; 35, connecting piece; 36, connecting rod; 4, counterweight assembly; 41, T-shaped plate; 4 11. Column; 412. Limiting groove; 413. L-shaped groove; 42. Expansion hydraulic cylinder; 43. First clamping plate; 431. First right-angle plate; 432. First connecting plate; 44. Second clamping plate; 441. Second right-angle plate; 442. Second connecting plate; 45. Lower counterweight; 451. Lower avoidance groove; 452. Lower boss; 453. Lower groove; 46. Upper counterweight; 461. Upper avoidance groove; 462. Upper boss; 463. Upper groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0035] In the following description of the invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. The term "connection" only indicates the connection between devices and has no special meaning.

[0036] In addition, the technical fields and installation methods involved in the embodiments of the present invention described below can be combined with each other as long as there is no conflict between them.

[0037] Specific implementation: Please refer to Figure 1-Figure 12 A tower crane base comprises a lower support assembly 1, an upper support assembly 2, a plurality of adjustment assemblies 3 and a plurality of counterweight assemblies 4, wherein the plurality of adjustment assemblies 3 are inserted at intervals at the lower part of the lower support assembly 1 along the circumferential direction, a group of counterweight assemblies 4 corresponds to a group of adjustment assemblies 3, and the counterweight assemblies 4 are arranged at the upper end of the adjustment assemblies 3. The lower support assembly 1 comprises a bottom plate 11 and a top plate 12, and a connecting seat 13 is fixedly arranged at each of the four corners of the bottom plate 11, and the upper end of the connecting seat 13 is fixedly connected to the edge of the top plate 12, and a plurality of positioning rods 25 are fixedly arranged at the lower end of the upper support assembly 2, and the lower end of the positioning rod 25 passes through the top plate 12 and abuts against the upper surface of the bottom plate 11 The adjustment component 3 includes a main slide rail 31 and two auxiliary slide rails 32. The two auxiliary slide rails 32 are symmetrically arranged on both sides of the main slide rail 31. One end of the main slide rail 31 is plugged into the connecting seat 13, and the other end is movably connected to the auxiliary slide rail 32 through a connecting rod 36. The counterweight component 4 includes a T-shaped plate 41, a first clamping plate 43 and a second clamping plate 44. A column 411 is fixedly arranged in the middle of the upper surface of the T-shaped plate 41. The first clamping plate 43 and the second clamping plate 44 are sequentially inserted into the column 411 and rotatably connected thereto. A rotatable lower counterweight block 45 and an upper counterweight block 46 are cross-stacked on the first clamping plate 43 and the second clamping plate 44 in sequence.

[0038] Furthermore, the adjustment component 3 also includes a limit block 33 and an auxiliary block 34. A strip groove 311 is provided on the upper surface of the main slide rail 31. A movable screw rod 312 is rotatably provided in the strip groove 311. A movable block 331 is fixedly provided at the lower end of the limit block 33. The movable block 331 is connected to the movable screw rod 312 by threads and is slidably connected to the strip groove 311. A slider 321 is slidably provided on the upper surface of the secondary slide rail 32. The auxiliary block 34 is rotatably provided at the upper end of the slider 321. The upper cross-sectional shapes of the auxiliary block 34 and the limit block 33 are both U-shaped. Two limit grooves 412 are symmetrically provided in the middle of both sides of the T-shaped plate 41. The upper inner surface of the limit block 33 is symmetrical. Two limit strips 332 are provided, and the limit strips 332 are plugged into the limit grooves 412. The limit strips 332 limit the T-shaped plate 41. Two protrusions 341 are symmetrically provided on the upper inner surface of the auxiliary block 34. Two L-shaped grooves 413 are symmetrically provided on both sides of the limit groove 412. The long groove on the L-shaped groove 413 extends from the middle of the T-shaped plate 41 to the end of the T-shaped plate 41, and the short groove on the L-shaped groove 413 extends from the middle of the T-shaped plate 41 to the main slide rail 31. The protrusion 341 is inserted into the short groove of the L-shaped groove 413 and is slidably set. The protrusion 341 is slidably connected with the long groove of the L-shaped groove 413, and also limits the T-shaped plate 41.

[0039] Furthermore, two expansion hydraulic cylinders 42 are symmetrically arranged on the upper surface of the T-shaped plate 41, and the cylinder body of the expansion hydraulic cylinder 42 is rotatably connected to the T-shaped plate 41. A first connecting plate 432 is correspondingly arranged on the side wall of the first clamping plate 43, and a second connecting plate 442 is correspondingly arranged on the side wall of the second clamping plate 44. The piston rod ends of the two expansion hydraulic cylinders 42 are rotatably connected to the first connecting plate 432 and the second connecting plate 442 respectively.

[0040] Furthermore, a strip hole 313 is formed through the lower part of one end of the main slide rail 31 away from the bottom plate 11, and an expansion screw rod 314 is rotatably arranged in the strip hole 313, and the expansion screw rod 314 is located below the moving screw rod 312. A connecting piece 35 is slidably arranged in the strip hole 313, and the middle part of the connecting piece 35 is threadedly connected with the expansion screw rod 314. A receiving hole 322 is formed through the lower part of the auxiliary slide rail 32, and a connecting column 323 is fixedly arranged in the receiving hole 322. The connecting rod 36 is located between the connecting piece 35 and the auxiliary slide rail 32, and one auxiliary slide rail 32 corresponds to one connecting rod 36. One end of the connecting rod 36 is rotatably connected to the connecting column 323, and the other end is rotatably connected to the connecting piece 35. The connecting seat 13 is close to the counterweight assembly 4 A trapezoidal groove 131 is provided on the surface of one end of the main slide rail 31, and the end of the main slide rail 31 away from the strip hole 313 is plugged into the trapezoidal groove 131 and fixedly connected by bolts. A wedge-shaped accommodating groove 132 is provided in the middle of the trapezoidal groove 131, and a wedge-shaped accommodating block 316 is fixedly provided at the end of the main slide rail 31 away from the strip hole 313, and the accommodating block 316 is plugged into the accommodating groove 132. The arranged adjustment component 3 can make the auxiliary slide rail 32 in each group rotate and expand relative to the main slide rail 31, so as to increase the supporting area of ​​the T-shaped plate 41. As the hoisting load-bearing capacity of the tower crane becomes larger and larger, the movable counterweight component 4 is matched to increase the supporting area of ​​the entire tower crane base, and it is more convenient to increase the support area of ​​the entire tower crane base without stacking more counterweight blocks.

[0041] Furthermore, a first right-angle plate 431 is fixedly provided at both ends of the first clamping plate 43, and the two first right-angle plates 431 are centrally symmetrical. The upper counterweight block 46 is located between the two first right-angle plates 431. A second right-angle plate 441 is fixedly provided at both ends of the second clamping plate 44, and the two second right-angle plates 441 are centrally symmetrical. The lower counterweight block 45 is located between the two second right-angle plates 441. A lower avoidance groove 451 is provided in the middle of the upper surface of the lower counterweight block 45, and an upper avoidance groove 461 is provided in the middle of the lower surface of the upper counterweight block 46. The lower avoidance groove 451 and the upper avoidance groove 461 are plugged into each other, and the lower counterweight block 45 and the upper counterweight block 46 are connected to each other. The weights 46 are arranged in groups and crosswise, and the upper counterweight 46 in each group is rotatably connected to the lower counterweight 45. The counterweight assembly 4 is arranged to drive the first clamping plate 43 and the second clamping plate 44 to move away from or closer to each other through the expansion hydraulic cylinder 42, so as to change the angle between the upper counterweight 46 and the lower counterweight 45. As the angle increases, the supporting area at the bottom of the upper counterweight 46 and the lower counterweight 45 also increases, so that the support of the clamping plate to the counterweight is also more stable. When the counterweight needs to be increased and the overall height of the counterweight increases, the larger supporting area greatly reduces the risk of collapse of the counterweight, thereby reducing safety hazards.

[0042] Furthermore, an upper boss 462 is fixedly provided in the middle of the upper surface of the upper counterweight block 46, a lower boss 452 is fixedly provided in the middle of the bottom surface of the lower avoidance groove 451, an upper groove 463 is opened in the middle of the bottom surface of the upper avoidance groove 461, and a lower groove 453 is opened in the middle of the lower surface of the lower counterweight block 45. The upper boss 462 is plugged and rotatably connected with the lower groove 453 of the lower counterweight block 45 in the upper adjacent group, and the lower boss 452 in the same group is plugged and rotatably connected with the upper groove 463 of the upper counterweight block 46. The upper end of the column 411 passes through the first clamping plate 43 and the second clamping plate 44 and extends upward. The lower counterweight block 45 close to the first clamping plate 43 passes through the lower groove 45 3 is plugged and rotatably connected with the upper end of the column 411, the upper surface ends of the lower counterweight block 45 and the upper counterweight block 46 are fixedly provided with plugging columns, and the lower surfaces are correspondingly provided with plugging column grooves, and the adjacent two upper counterweight blocks 46 or lower counterweight blocks 45 are plugged into the plugging column grooves through the plugging columns, and the upper counterweight blocks 46 and the lower counterweight blocks 45 are arranged in sequence. Cross-stacked, and the adjacent two upper counterweight blocks 46 or lower counterweight blocks 45 are plugged into each other, so that the first clamping plate 43 and the second clamping plate 44 can drive all the upper counterweight blocks 46 or the lower counterweight blocks 45 to rotate together, so as to increase the stability of the counterweight blocks, and the number of counterweight groups can be increased or decreased according to the hoisting load-bearing capacity of the tower crane, and the adaptability is higher.

[0043] Furthermore, a plurality of supporting hydraulic cylinders 324 are arranged at intervals at the lower part of the auxiliary slide rail 32, and a supporting plate 325 is fixedly arranged at the end of the piston rod of the supporting hydraulic cylinder 324, and the lower surface of the supporting plate 325 is in contact with the ground, and rotating seats 19 are rotatably arranged on both sides of the connecting seat 13, one end of the auxiliary slide rail 32 is plugged into and fixedly connected to the rotating seat 19, and a universal wheel 326 is rotatably arranged at the lower part of the other end, and the universal wheel 326 is rollingly connected to the ground, and an expansion motor 315 is arranged at the lower part of one end of the main slide rail 31, and the output shaft of the expansion motor 315 is fixedly connected to the expansion screw rod 314.

[0044] Furthermore, the upper support assembly 2 includes an upper support plate 21, and upper supports 22 are arranged at the four corners of the upper surface of the upper support plate 21. A mounting groove 23 is opened between the four upper supports 22. The lower end of the tower body of the tower crane is fixedly connected to the mounting groove 23. The upper surface of the positioning rod 25 is fixedly connected to the lower surface of the upper support plate 21. The lower surface of the positioning rod 25 is provided with a positioning groove 251. The lower surface of the top plate 12 is provided with a plurality of slots 121 and sockets 122 along the circumferential direction. The plurality of sockets 122 are located in the plurality of slots. 121 outside, the lower support assembly 1 also includes a connecting anchor rod, the lower ends of the connecting anchor rods are inserted into the ground, the connecting anchor rods are divided into an inner anchor rod 101 and an outer anchor rod 102, a plurality of anchor rod holes 113 are opened on the lower surface of the bottom plate 11, the inner anchor rod 101 and the outer anchor rod 102 are both passed through the corresponding anchor rod holes 113, the lower end of the positioning rod 25 passes through the insertion hole 122 and is plugged into the outer anchor rod 102 through the positioning groove 251, and the upper end of the inner anchor rod 101 passes through the slot 121 and is fixedly connected to the top plate 12 through a nut.

[0045] Furthermore, a fixing plate 17 is fixedly provided between two adjacent connecting seats 13, and the fixing plate 17 is located outside the outer anchor rod 102. Two fixing columns 171 are fixedly provided between the fixing plate 17 and the bottom plate 11, and the two fixing columns 171 are symmetrically provided at both ends of the fixing plate 17. One end of the rotating seat 19 is rotatably connected to the fixing column 171, and a rotating groove 191 is provided on the surface of the other end. The end of the auxiliary slide rail 32 close to the bottom plate 11 is plugged into the rotating groove 191 and fixedly connected by bolts. An oblique brace 18 is fixedly connected between the four corners of the upper support plate 21 and the four sides of the bottom plate 11. A connecting groove 112 is provided in the middle of the four sides of the bottom plate 11. An insert block 182 is fixedly provided at the lower end of the oblique brace 18, and connecting blocks 181 are fixedly provided on both sides of the insert block 182. The insert block 182 is plugged into the connecting groove 112 and fixedly connected to the bottom plate 11 through the connecting block 181. A support seat 183 is fixedly provided at the upper end, and the support seat 183 is plugged into and fixedly connected to the top corner of the lower end of the upper support plate 21; a lower support plate 24 is fixedly provided on the upper part of the positioning rod 25; a plurality of reinforcing plates 26 are arranged at intervals along the circumferential direction on the upper surface of the lower support plate 24; the lower surface of the lower support plate 24 abuts against the upper surface of the top plate 12; the upper end of the inner anchor rod 101 passes through the slot 121 and the lower support plate 24 in sequence; the reinforcing plate 26 not only supports the positioning rod 25, but also strengthens the stability between the lower support assembly 1 and the upper support assembly 2; the inclined brace 18 supports the four top corners of the lower end of the upper support plate 21, further strengthening the stability of the bottom plate 11 and the upper support plate 21; while stabilizing the bottom plate 11, the counterweight assembly 4 stabilizes the upper support plate 21 through the external anchor rod 102, the inclined brace 18 and the reinforcing plate 26, thereby ensuring the stability of the tower body of the tower crane.

[0046] Furthermore, a driving motor 14 is provided in the middle of the lower surface of the top plate 12, a connecting shaft 16 is rotatably provided between the driving motor 14 and the bottom plate 11, the output shaft of the driving motor 14 is fixedly connected to the connecting shaft 16, a supporting block 111 corresponding to the connecting seat 13 is provided on the upper surface of the bottom plate 11, a driven bevel gear 15 is rotatably provided between the supporting block 111 and the corresponding connecting seat 13, an active bevel gear 141 is fixedly provided in the middle of the connecting shaft 16, the active bevel gear 141 is meshed and drivenly connected with the driven bevel gear 15, and a connecting rod 151 is fixedly provided at one end of the driven bevel gear 15 close to the connecting seat 13, and the connecting rod 151 is fixedly provided at the same time. The end of the connecting rod 151 is inserted in the connecting seat 13 and extends in the direction close to the main slide rail 31. The connecting rod 151 is rotatably connected to the connecting seat 13. A spline groove 1511 is provided on the end surface of the connecting rod 151. The end of the movable screw rod 312 away from the strip hole 313 passes through the accommodating block 316 and extends in the direction close to the base plate 11. A corresponding spline shaft 3121 is fixedly provided on the end of the movable screw rod 312. The spline shaft 3121 is rotatably connected to the accommodating block 316. The spline shaft 3121 is plugged into the spline groove 1511. The rotation of the connecting rod 151 can drive the movable screw rod 312 to rotate together through the spline connection.

[0047] When a tower crane base is in use, a square groove with a horizontal bottom surface is pre-dug at the position where the tower crane needs to be installed, and a plurality of deep holes are reserved in the groove, the positions of the deep holes correspond to the anchor holes 113 on the bottom plate 11, and connecting anchor rods are inserted into the reserved deep holes, from the inside to the outside, respectively, the inner anchor rod 101 and the outer anchor rod 102, wherein the length of the outer anchor rod 102 exposed to the ground is less than the length of the inner anchor rod 101 exposed to the ground, the anchor holes 113 of the bottom plate 11 are respectively plugged with the corresponding inner anchor rod 101 and the outer anchor rod 102, the upper end of the inner anchor rod 101 is inserted into the slot 121 of the top plate 12, and the top plate 12 is fixedly connected to the inner anchor rod 101 with screws, the lower end of the positioning rod 25 of the upper support assembly 2 is passed through the insertion hole 122, and the positioning slot 251 is inserted into the upper end of the outer anchor rod 102, and after the lower surface of the lower support plate 24 abuts against the upper surface of the top plate 12, the lower support plate 24 is fixedly connected to the top plate 12 with bolts, and the inclined plate 1 The plug block 182 of the support 18 is plugged into the connecting groove 112 of the bottom plate 11, the connecting block 181 is in contact with the side wall of the bottom plate 11, and the support seat 183 is plugged into the top corner of the lower end of the upper support plate 21. The support seat 183 is fixedly connected to the upper support plate 21 and the connecting block 181 is fixedly connected to the bottom plate 11 with screws. At this time, the upper support assembly 2 is connected to the lower support assembly 1. The receiving block 316 of the main slide rail 31 is plugged into the receiving groove 132, and the spline shaft 312 of the moving screw rod 312 is fixedly connected to the upper support assembly 21 and the connecting block 181. 121 is plugged into the spline groove 1511 of the connecting rod 151, and the auxiliary slide rail 32 is plugged into the corresponding rotating groove 191 of the rotating seat 19. The main slide rail 31 is fixedly connected to the connecting seat 13, and the auxiliary slide rail 32 is fixedly connected to the rotating seat 19 with bolts. Similarly, other sets of main slide rails 31 and auxiliary slide rails 32 are installed. The limiting groove 412 of the T-shaped plate 41 is plugged into the connecting column 323, and the L-shaped groove 413 is plugged into the corresponding protrusion 341. At this time, the entire device is installed;

[0048] When installing the counterweight, the lower groove 453 of the first lower counterweight 45 is plugged into the upper end of the column 411 and inserted between the two first right-angle plates 431. The upper groove 463 of the first upper counterweight 46 is plugged into the lower protrusion 452 of the first lower counterweight 45 and inserted between the two second right-angle plates 441. When adding more counterweights, the same procedure is repeated. The lower counterweight 45 and the upper counterweight 46 can be cross-stacked in sequence.

[0049] As the hoisting load of the tower crane becomes larger and larger, when the bottom support area needs to be increased, the drive motor 14 is started, the output shaft of the drive motor 14 rotates, driving the connecting shaft 16 to rotate, and the connecting rod 151 is driven to rotate through the active bevel gear 141 and the driven bevel gear 15, and the moving screw 312 matched with the connecting rod 151 through the spline rotates, driving the limit block 33 to move, and the limit block 33 drives the T-shaped plate 41 to move away from the bottom plate 11. At the same time, the expansion motor 315 is started, the expansion screw 314 rotates, and the connecting piece 35 threadedly connected to the expansion screw 314 moves closer to the bottom plate 11. , and the piston rod of the supporting hydraulic cylinder 324 retracts, and the supporting plate 325 is separated from the ground. Under the action of the connecting rod 36, the two auxiliary slide rails 32 rotate in the direction away from the main slide rail 31, and at the same time, the protrusion 341 of the auxiliary block 34 slides along the L-shaped groove 413 toward the end of the T-shaped plate 41. After the adjustment is completed, the piston rod of the supporting hydraulic cylinder 324 extends out, so that the supporting plate 325 abuts against the ground. At this time, the supporting area of ​​the main slide rail 31 and the auxiliary slide rail 32 on the T-shaped plate 41 becomes larger, and at the same time, the supporting area of ​​the counterweight assembly 4 relative to the entire base is also increased accordingly, further enhancing the stability of the base;

[0050] When the counterweight needs to be increased, resulting in the overall height of the counterweight block being raised, the expansion hydraulic cylinder 42 is started, and the piston rod of the expansion hydraulic cylinder 42 is extended, pushing the first clamping plate 43 and the second clamping plate 44 to rotate and move away from each other, driving the corresponding lower counterweight block 45 and upper counterweight block 46 to rotate, increasing the angle between the upper counterweight block 46 and the lower counterweight block 45, and increasing the bottom area to make the upper counterweight block 46 and the lower counterweight block 45 more stable. When the device is in use, the lower support assembly 1 is plugged with the corresponding anchor rod, and the lower end of the upper support assembly 2 passes through the top plate 12 and is plugged with the corresponding anchor rod, so that the upper support assembly 2 and the lower support assembly 1 are more stable. At the same time, a plurality of diagonal braces 18 are set between the bottom plate 11 and the upper support plate 21, so that the lower support assembly 1 has better stability for the upper support assembly 2, and the adjustable counterweight assembly 4 is matched to expand the support area of ​​the base, further strengthening the stability of the lower support assembly 1, and each component is detachably connected, which makes disassembly and assembly faster, making the replacement of the base more convenient.

Claims

1. A tower crane base, characterized in that: The cam is an adjustable weight assembly and a plurality of adjustable weight assemblies are connected to the lower support assembly at intervals in the circumferential direction. The adjustable weight assembly corresponds to the plurality of adjustable weight assemblies. The adjustable weight assembly is arranged at the upper end of the adjustable weight assembly. The upper support assembly is arranged on the lower support assembly. The adjustable weight assembly comprises a main slide rail and two auxiliary slide rails. The two auxiliary slide rails are symmetrically arranged on both sides of the main slide rail. One end of the main slide rail is plugged into the lower support assembly, and the other end is movably connected to the auxiliary slide rail through a connecting rod. The auxiliary weight assembly comprises a T-shaped plate, a first clamping plate and a second clamping plate. A column is fixedly arranged on the middle part of the upper surface of the T-shaped plate. The first clamping plate and the second clamping plate are sequentially inserted into the column and rotatably connected thereto. A rotatable lower counterweight block and an upper counterweight block are cross-stacked on the first clamping plate and the second clamping plate in turn. The adjustment assembly also includes a limit block and an auxiliary block. A movable screw is rotatably arranged in the main slide rail. The lower end of the limit block is connected to the movable screw by a thread and is slidably connected to the main slide rail. A slider is slidably arranged on the upper surface of the secondary slide rail. The auxiliary block is rotatably arranged on the upper end of the slider. The middle parts of both sides of the T-shaped plate are plugged into the limit block, and the auxiliary block is slidably connected to both sides of the limit groove.

2. A tower crane base according to claim 1, characterized in that: Two expansion hydraulic cylinders are symmetrically arranged on the upper surface of the T-shaped plate, the cylinder bodies of the expansion hydraulic cylinders are rotatably connected to the T-shaped plate, and the piston rod ends of the two expansion hydraulic cylinders are rotatably connected to the first clamping plate and the second clamping plate respectively.

3. A tower crane base according to claim 2, characterized in that: A strip hole is formed through the lower part of one end of the main slide rail away from the lower support assembly, an expansion screw rod is rotatably arranged in the strip hole, a connecting piece is slidably arranged in the strip hole, the middle part of the connecting piece is threadedly connected to the expansion screw rod, a receiving hole is formed through the lower part of the auxiliary slide rail, a connecting column is fixedly arranged in the receiving hole, the connecting rod is located between the connecting piece and the auxiliary slide rail, one end of the connecting rod is rotatably connected to the connecting column, and the other end is rotatably connected to the connecting piece.

4. A tower crane base according to claim 1, characterized in that: A first right-angle plate is fixedly provided at both ends of the first clamping plate, the upper counterweight block is located between the two first right-angle plates, a second right-angle plate is fixedly provided at both ends of the second clamping plate, the lower counterweight block is located between the two second right-angle plates, the lower counterweight block and the upper counterweight block are cross-arranged in groups, and the upper counterweight block in each group is rotatably connected to the lower counterweight block.

5. A tower crane base according to claim 4, characterized in that: A lower avoidance groove is provided in the middle of the upper surface of the lower counterweight block, and an upper avoidance groove is provided in the middle of the lower surface of the upper counterweight block. The lower avoidance groove and the upper avoidance groove are plugged into each other. Insertion columns are fixedly provided at the ends of the upper surfaces of the lower counterweight block and the upper counterweight block, and corresponding insertion column grooves are provided on the lower surfaces. Two adjacent upper counterweight blocks or lower counterweight blocks are plugged into the insertion column grooves through the insertion columns.

6. A tower crane base according to claim 3, characterized in that: The lower support assembly includes a bottom plate and a top plate, the four corners of the bottom plate are fixedly provided with connecting seats, the upper ends of the connecting seats are fixedly connected to the edge of the top plate, and the lower ends of the upper support assembly are fixedly provided with a plurality of positioning rods, the lower ends of the positioning rods pass through the top plate and abut against the upper surface of the bottom plate.

7. A tower crane base according to claim 6, characterized in that: The upper support assembly includes an upper support plate, the upper surface of the positioning rod is fixedly connected to the lower surface of the upper support plate, the lower surface of the positioning rod is provided with a positioning groove, the lower surface of the top plate is provided with a plurality of slots and holes along the circumferential direction, and the plurality of holes are located outside the plurality of slots, the lower support assembly also includes a connecting anchor rod, the lower end of the connecting anchor rod is inserted into the ground, the lower end of the positioning rod passes through the hole and is plugged into the corresponding connecting anchor rod through the positioning groove, and the top plate is plugged into the corresponding connecting anchor rod through the slot and fixedly connected through a nut.

8. A tower crane base according to claim 6, characterized in that: A supporting block corresponding to the connecting seat is provided on the upper surface of the base plate, a driven bevel gear is rotatably provided between the supporting block and the corresponding connecting seat, a connecting shaft is rotatably provided on the middle part of the upper surface of the base plate, an active bevel gear is fixedly provided in the middle of the connecting shaft, the active bevel gear and the driven bevel gear are meshed and transmitted, a connecting rod is fixedly provided on one end of the driven bevel gear close to the connecting seat, the end of the connecting rod is inserted in the connecting seat and extends in a direction close to the main slide rail, the connecting rod is rotatably connected to the connecting seat, and the connecting rod is connected to the end of the movable screw rod by a spline structure.

9. A tower crane base according to claim 6, characterized in that: A plurality of supporting hydraulic cylinders are arranged at intervals at the lower part of the auxiliary slide rail, a supporting plate is fixedly arranged at the end of the piston rod of the supporting hydraulic cylinder, the lower surface of the supporting plate is in contact with the ground, rotating seats are rotatably arranged on both sides of the connecting seat, one end of the auxiliary slide rail is plugged into and fixedly connected to the rotating seat, and a universal wheel is rotatably arranged at the lower part of the other end, and the universal wheel is rollingly connected to the ground, an expansion motor is arranged at the lower part of one end of the main slide rail, and the output shaft of the expansion motor is fixedly connected to the expansion screw rod.

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