CN214570298U

CN214570298U - Wind power hoisting tower crane truss type chassis suitable for all-terrain weak earth pressure anti-inclination

Info

Publication number: CN214570298U
Application number: CN202120190128.4U
Authority: CN
Inventors: 郭志康; 李伟; 孙秋香; 石小飞; 李芳�; 徐清; 池大光; 韩哲
Original assignee: Kerun Electro Mechanical Engineering Co ltd; Huadian Zhengzhou Machinery Design and Research Institute Co Ltd
Current assignee: Kerun Electro Mechanical Engineering Co ltd; Huadian Zhengzhou Machinery Design and Research Institute Co Ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-11-02
Anticipated expiration: 2031-01-25

Abstract

The utility model discloses a wind-powered electricity generation hoist and mount tower machine truss-like chassis suitable for all-terrain weak ground pressure anti-tilt belongs to hoisting machinery technical field. The chassis is including supporting the cross chassis of base festival bottom below at the bottom of the tower, and both ends articulate four bearing diagonal that connect at base festival upper portion and cross chassis top surface at the bottom of the tower respectively, support four groups of supports and base distance broad face landing legs of four farthest end belows at the cross chassis, all combine together through altitude mixture control formula ball pivot subassembly between every support and the cross chassis. The utility model discloses a chassis can satisfy the foundation bearing capacity and require low, anti slope, the simple full topography geological foundation's of basis construction requirement, can compatible multiple geological foundation's difference, has that the atress is reasonable, the structure is light and handy, the dead weight is light, the cost is low, be convenient for installation and dismantlement, convenient transition and transportation, convenient operation's advantage, especially is fit for short, the frequent wind-powered electricity generation hoist and mount tower machine adapted of transition with the time limit for a project.

Description

Wind power hoisting tower crane truss type chassis suitable for all-terrain weak earth pressure anti-inclination

Technical Field

The utility model belongs to the technical field of hoisting machinery, more specifically say and relate to a wind-powered electricity generation hoist and mount tower machine truss-like chassis suitable for all-terrain weak ground pressure anti-tilt, especially be suitable for the short, frequent wind-powered electricity generation hoist and mount tower machine adapted of transition of time limit for a project.

Background

The self-supporting tower crane is characterized in that the upper part of the tower crane stands on the ground after being connected with the underframe structure, so that load is transferred to the ground foundation, and the underframe structure can be connected with the ground through a pre-buried foundation, a ground anchor type underframe or a ballast type underframe. The pre-buried underframe has low cost, can not be reused, is difficult to disassemble, and is generally suitable for occasions with long construction period and infrequent tower crane transition. The ground anchor type or ballast type underframe generally adopts a box girder structure, has high manufacturing cost, can be repeatedly used, but has the defects of difficult installation, inconvenient transition and transportation because the underframe is stressed complexly, has large structural size and is very heavy. Because the construction period of each project of the wind power hoisting tower crane is short, about 5-7 days, the transition is very frequent, the underframe part needs to be frequently disassembled and assembled, and the differences of the geological foundation, the economical efficiency of construction and the convenience of assembly, disassembly and transportation are considered, so that the underframe needs to meet the construction requirements of the all-terrain geological foundation, such as low foundation bearing capacity, simple foundation treatment, no permanent foundation, light and handy structure and the like.

Disclosure of Invention

The utility model aims at providing a wind-powered electricity generation hoist and mount tower machine truss-like chassis suitable for all-terrain weak ground pressure anti-tilt just to the weak point that exists among the above-mentioned prior art. The utility model discloses a chassis can satisfy the foundation bearing capacity and require low, anti slope, the simple full topography geological foundation's of basis construction requirement, can compatible multiple geological foundation's difference, has that the atress is reasonable, the structure is light and handy, the dead weight is light, the cost is low, be convenient for installation and dismantlement, convenient transition and transportation, convenient operation's advantage, especially is fit for short, the frequent wind-powered electricity generation hoist and mount tower machine adapted of transition with the time limit for a project.

The purpose of the utility model can be realized by the following technical measures:

the utility model discloses a wind-powered electricity generation hoist and mount tower crane truss-like chassis suitable for all-terrain weak ground pressure anti-tilt, including supporting the truss-like cross chassis (the cross chassis is truss-like structure, as the installation basis of tower bottom foundation knot, support and connect tower bottom foundation knot, tower machine upper portion load passes to the cross chassis through tower body chord member, web member part and bearing diagonal brace, bear pressure and pulling force), four diagonal braces (support between tower bottom foundation knot upper portion and cross chassis, transmit upper portion load) that both ends articulated respectively at tower bottom foundation knot upper portion and cross chassis top surface, support four groups of supports and foundation distance broad face landing legs (can greatly reduce ground pressure through foundation distance broad face landing leg) below four farthest ends of tower machine chassis, can satisfy the foundation bearing capacity requirement low, the construction requirement of the simple all-terrain geological foundation of foundation, can be compatible with the differences of multiple geological foundations), its characterized in that: each support is combined with the cross-shaped underframe through a height-adjusting spherical hinge assembly (the height-adjusting spherical hinge assemblies can enable four groups of supports and wide-area base legs to be stressed uniformly, and a leveller is matched to detect the levelness of the underframe, so that the danger of equipment caused by errors generated by foundation settlement is avoided, the integral anti-inclination capability of the tower crane is improved, the construction requirements of an all-terrain geological foundation with uneven foundation and simple foundation can be met, and the differences of various geological foundations can be compatible); the height-adjustable spherical hinge component comprises a spherical column which is processed by a cylinder, wherein the upper part of the spherical hinge component is of a hemispherical structure, the lower part of the spherical column is of an external thread section, an inner cavity of the spherical hinge component is a hemispherical groove matched with the hemispherical structure, and an upper support block which is fixed on the bottom surface of the farthest end of the cross-shaped chassis is in spherical fit with the hemispherical groove, has a self-leveling function, and improves the integral anti-inclination capacity of the tower crane, the inner cavity of the spherical hinge component is an internal thread cavity matched with the external thread section, and is fixed on the top surface of a support (the lower part of the spherical column is in threaded fit with the lower support block to realize quick connection, and the height can be adjusted according to actual conditions easily only by rotating the spherical column).

The utility model discloses in the length of external screw thread section is greater than the length of internal thread chamber in the lower branch piece in the ball post (only need rotate the ball post just so can easily realize need adjustment height to the levelness of cooperation spirit level detection chassis can quick leveling chassis, has both avoided the error that the basis subsides the production to lead to equipment dangerous to appear, has improved the whole anti-inclination ability of tower machine again).

The cross-shaped underframe of the utility model comprises an intermediate connecting piece formed by fixedly combining an upper connecting section and a diagonal cross in an up-and-down superposition mode (the intermediate connecting piece is supported and connected with a tower bottom base section through the upper connecting section, the intermediate connecting piece is hinged with four straight beams through the diagonal cross to form a cross-shaped big underframe, and has the advantages of light structure, light dead weight and low manufacturing cost), straight beams which are respectively hinged with four ends of the diagonal cross and extend outwards (the straight beams are hinged with the diagonal cross to form the cross-shaped big underframe, and can be quickly opened or closed according to the needs of work or transportation, and have the advantages of convenient transition, convenient assembly and disassembly, convenient transportation, simple operation and convenient use), two horizontal long supporting rods which are hinged and supported at the far ends of the four straight beams and are combined with the four straight beams to form two opposite vertex triangles (the horizontal long supporting rods enclose two adjacent straight beams into a stable triangular bracket, the straight beam and the short beam in the diagonal cross are fixed into a straight line, the lateral stability of the straight beam is increased, and the load in the horizontal direction is transferred), and four horizontal short support rods (which increase the rigidity of the triangular support and transfer the load in the horizontal direction) are supported at the four near ends of the diagonal cross and the middle part of the horizontal long support rods at the corresponding side; the cross section of the section of going up even is the same with the cross section of tower bottom basis festival (utilizing the utility model discloses when supporting wind-powered electricity generation hoist and mount tower machine, directly go up overlap joint tower bottom basis festival on the section of going up even, then at the top overlap joint body of tower bottom basis festival standard festival can, easy operation, convenient to use).

The utility model discloses in four the upper end of bearing diagonal articulates the upper portion at four chord members of tower bottom foundation festival respectively, and the lower extreme of four bearing diagonal articulates the distal end top surface at four word roof beams respectively (the bearing diagonal connects and constitutes the big triangular supports frame in right angle behind chord member and the word roof beam of tower bottom foundation festival, bears the load on tower machine upper portion, has improved the tradition greatly and has done the atress situation that the owner supported with the cross section of tower bottom foundation festival, and the atress is reasonable, simple structure, the dead weight is light, economy, practicality.

The support in the utility model is a quadrangular frustum pyramid structure consisting of a lower bottom plate, an upper bottom plate, a vertical rib plate and a sealing plate (the frustum pyramid structure with a large lower part and a small upper part is convenient for evenly and dispersedly transmitting the upper load to the lower landing leg); the lower bottom plate extends outwards beyond the lower edge of the sealing plate (a pressing block can be conveniently and quickly pressed on the lower bottom plate); the center of the upper bottom plate is provided with an internal thread matched with the external thread section of the ball column and matched with the internal thread cavity in the lower support block (ensuring that the ball column is smoothly rotated for height adjustment).

In the utility model, the foundation distance wide-surface supporting leg is of a cuboid box-shaped structure (which is convenient for evenly transmitting the load to the ground), and a positioning strip and a pressing block are arranged on the foundation distance wide-surface supporting leg (the positioning strip is convenient for quickly positioning the lower bottom plate, and the pressing block is used for quickly pressing the lower bottom plate); the area of the bottom surface of the foundation distance broad-face supporting leg is not less than 16 square meters (compared with the traditional foundation distance of less than 12 square meters and a tower body pre-embedded base structure, the grounding pressure of the foundation distance broad-face supporting leg is greatly reduced, so that the geological foundation can be simply treated, and the foundation distance broad-face supporting leg is suitable for all terrains.

The design principle of the utility model is as follows:

the utility model discloses improved the connected mode of landing leg and cross chassis among traditional wind-powered electricity generation hoist and mount tower machine cross chassis system-promptly replaced the direct bonding of traditional landing leg and cross chassis through the self-leveling transitional coupling of altitude mixture control formula ball hinge subassembly, it is even to utilize the altitude mixture control formula ball hinge subassembly to make four group's supports and the wide face landing leg atress of base distance like this, and cooperate the spirit level to detect the levelness of chassis, both avoided the basis to subside and produced the error and lead to equipment danger to appear, the whole anti-tilt ability of tower machine has been improved again, can satisfy the ground unevenness, the simple construction requirements of the simple full geology topography foundation of basis, the difference that can compatible multiple geology foundation. And the utility model discloses well basal distance broad face landing leg's bottom surface area is not less than 16 square meters, compares with the basal distance below the 12 square meters of tradition and the pre-buried formula base structure of tower body, and the ground pressure of basal distance broad face landing leg reduces greatly for geological foundation only need simple and easy processing can, be suitable for the use of full topography. In addition, the utility model reserves the cross-shaped underframe of the truss structure in the traditional wind power hoisting tower crane cross-shaped underframe system and the inclined support supported between the top surface of the linear beam of the cross-shaped underframe and the upper part of the chord member of the tower bottom base section, the utility model forms the cross-shaped large underframe which can be rapidly opened or closed according to the work or transportation requirement through the diagonal cross at the lower part of the middle connecting piece and the four linear beams which are hinged, can be transported integrally without splitting, and has the advantages of convenient transition, convenient transportation, simple operation and convenient use; the utility model discloses a big triangle braced frame in right angle is constituted to bearing diagonal behind chord member and the straight line roof beam of tower bottom basis festival, and tower machine upper portion load passes through tower body chord member, web member part and bearing diagonal and stably passes to the cross chassis, has improved the atress situation that the tradition was done main support with the cross section of tower bottom basis festival greatly, has that the atress is reasonable, simple structure, dead weight is light, the cost is low, economy, practical advantage.

The utility model has the advantages of as follows:

the utility model discloses a chassis can satisfy the foundation bearing capacity and require low, anti slope, the simple full topography geological foundation's of basis construction requirement, can compatible multiple geological foundation's difference, has that the atress is reasonable, the structure is light and handy, the dead weight is light, the cost is low, be convenient for installation and dismantlement, convenient transition and transportation, convenient operation's advantage, especially is fit for short, the frequent wind-powered electricity generation hoist and mount tower machine adapted of transition with the time limit for a project.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic view of the structure of the chassis.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a schematic structural view of the height-adjustable ball hinge assembly.

Fig. 6 is a schematic structural view of the cradle.

Fig. 7 is a top view of fig. 6.

Fig. 8 is a schematic structural view of the leg.

Fig. 9 is a top view of fig. 8.

Number in the figure: 1. a tower bottom base section; 2. obliquely supporting; 3. the device comprises a cross-shaped underframe, 3-1 parts of middle connecting pieces, 3-1-1 parts of upper connecting sections, 3-1-2 parts of diagonal crosses, 3-2 parts of straight beams, 3-3 parts of horizontal long support rods and 3-4 parts of horizontal short support rods; 4. 4-1 of a support, 4-2 of a lower bottom plate, 4-3 of an upper bottom plate, 4-4 of a vertical rib plate and 4-4 of a sealing plate; 5. 5-1 parts of base distance wide-surface supporting legs, 5-2 parts of positioning strips and pressing blocks; 6. the height-adjustable spherical hinge assembly comprises a height-adjustable spherical hinge assembly 6-1, a spherical column 6-1-1, a hemispherical structure 6-1-2, an external thread section 6-2, an upper supporting block 6-2-1, a hemispherical groove 6-3, a lower supporting block 6-3-1 and an internal thread cavity.

Detailed Description

The present invention will be further described with reference to the accompanying drawings:

the utility model discloses a wind-powered electricity generation hoist and mount tower machine truss-like chassis suitable for all-terrain weak ground pressure anti-tilt, including supporting truss-like cross chassis 3 (cross chassis 3 is the truss-like structure) in the bottom of tower bottom foundation knot 1 below (as the installation basis of tower bottom foundation knot 1, support and connect tower bottom foundation knot 1, tower machine upper portion load passes through the tower body chord member, web member part and bearing diagonal 2 and gives the cross chassis, bearing pressure and pulling force), four bearing diagonal 2 (support between tower bottom foundation knot upper portion and cross chassis, transmission tower machine upper portion load) that both ends articulate respectively at tower bottom foundation knot upper portion and cross chassis top surface, support four group's supports 4 and basal distance broad face landing leg 5 (can reduce pressure greatly through basal distance broad face landing leg 5) of four most distal ends below cross chassis 3, can satisfy the foundation bearing capacity requirement low, The simple construction requirement of all-terrain geological foundation in basis can compatible multiple geological foundation's difference), its characterized in that: each support 4 is combined with the cross-shaped underframe 3 through a height-adjusting spherical hinge assembly 6 (the four groups of supports 4 and the wide-area base support legs 5 can be uniformly stressed by adopting the height-adjusting spherical hinge assemblies, and the levelness of the underframe is detected by matching with a level gauge, so that the danger of equipment caused by errors generated by foundation settlement is avoided, the integral anti-inclination capability of the tower crane is improved, the construction requirements of an all-terrain geological foundation with uneven foundation and simple foundation can be met, and the difference of various geological foundations can be compatible); the height-adjustable spherical hinge component 6 comprises a spherical column 6-1 which is formed by processing a cylinder, the upper part of the spherical column is a hemispherical structure 6-1-1, the lower part of the spherical column is an external thread section 6-1-2, an inner cavity is a hemispherical groove 6-2-1 matched with the hemispherical structure 6-1-1, an upper supporting block 6-2 which is fixed on the lower bottom surface of the farthest end of the cross-shaped underframe 3 (the hemispherical structure 6-1-1 and the hemispherical groove 6-2-1 are in spherical fit, have a self-leveling function and improve the integral anti-tilting capability of the tower crane), the inner cavity is an internal thread cavity 6-3-1 matched with the external thread section 6-1-2 and a lower supporting block 6-3 which is fixed on the top surface of the supporting seat 4 (the lower part of the spherical column 6-1 is combined with the lower supporting block 6-3 through threads to realize quick connection, and can be easily realized only by rotating the ball column 6-1 when the height is required to be adjusted according to actual conditions).

The utility model discloses in the length of external thread section 6-1-2 is greater than the length of internal thread chamber 6-3-1 in the lower prop piece 6-3 in the ball post 6-1 (only need rotate ball post 6-1 just can easily realize like this and need the height-adjusting to cooperate the levelness that the spirit level detected the chassis, can quick leveling chassis, both avoided the basis to subside the error that produces and lead to equipment dangerous, improved the whole anti-inclination ability of tower machine again).

The cross-shaped underframe 3 in the utility model comprises a middle connecting piece 3-1 formed by fixedly combining an upper connecting section 3-1-1 and a diagonal cross 3-1-2 in an up-and-down superposition way (the middle connecting piece 3-1 is supported and connected with a tower bottom base section 1 through the upper connecting section 3-1-1, the middle connecting piece 3-1 is hinged with four straight beams 3-2 through the diagonal cross 3-1-2 to form a cross-shaped big underframe, has the advantages of light structure, light dead weight and low manufacturing cost), straight beams 3-2 which are respectively hinged with four ends of the diagonal cross 3-1-2 and extend outwards (the straight beams are hinged with the diagonal cross 3-1-2 to form the cross-shaped big underframe and can be quickly opened or folded according to the needs of work or transportation, the device has the advantages of convenient transition, convenient assembly and disassembly, convenient transportation, simple operation and convenient use), and is hinged with two horizontal long support rods 3-3 (the horizontal long support rods surround two adjacent straight beams to form a stable triangular support so that the straight beams and the short beams in the diagonal cross are fixed into a straight line, the lateral stability of the straight beams is increased, and the load in the horizontal direction is transferred) which are supported at the far ends of four straight beams 3-2 and are combined with the four straight beams 3-2 to form two opposite triangles, and four horizontal short support rods 3-4 (the rigidity of the triangular support is increased and the load in the horizontal direction is transferred) which are supported at the four near ends of the diagonal cross 3-1-2 and the middle parts of the horizontal long support rods 3-3 at the corresponding sides; the cross section of the upper connecting section 3-1-1 is the same as that of the tower bottom foundation section 1 (when the utility model is used for supporting a wind power hoisting tower crane, the tower bottom foundation section 1 is directly lapped on the upper connecting section 3-1-1, and then the tower body standard section is lapped above the tower bottom foundation section 1, so that the operation is simple and the use is convenient).

The utility model discloses in four the upper end of bearing diagonal 2 articulates respectively on the upper portion of four chord members of tower bottom foundation festival 1, and the lower extreme of four bearing diagonal 2 articulates respectively at four sharp roof beam 3-2's distal end top surface (the bearing diagonal is connected and is constituting the big triangle braced frame in right angle behind the chord member of tower bottom foundation festival 1 and the straight roof beam, bears the load on tower machine upper portion, has improved the tradition greatly and has done the atress situation that main support with the cross section of tower bottom foundation festival, and the atress is reasonable, simple structure, the dead weight is light, economy, practicality.

The support 4 in the utility model is a quadrangular frustum pyramid structure consisting of a lower bottom plate 4-1, an upper bottom plate 4-2, a vertical gusset plate 4-3 and a closing plate 4-4 (the frustum pyramid structure with a large lower part and a small upper part is convenient for evenly and dispersedly transmitting the upper load to the lower landing leg); the lower bottom plate 4-1 extends outwards beyond the lower edge of the sealing plate 4-4 (so that the lower bottom plate can be quickly pressed by the pressing block); the center of the upper bottom plate 4-2 is provided with an internal thread matched with the external thread section 6-1-2 of the ball column 6-1 and matched with the internal thread cavity 6-3-1 in the lower block 6-3 (ensuring that the ball column 6-1 is smoothly rotated for height adjustment).

In the utility model, the foundation distance wide-surface supporting leg 5 is of a cuboid box-shaped structure (which is convenient for evenly transmitting load to the ground), and a positioning strip 5-1 and a pressing block 5-2 are arranged on the foundation distance wide-surface supporting leg 5 (the positioning strip 5-1 is convenient for quickly positioning the lower bottom plate, and the pressing block 5-2 is used for quickly pressing the lower bottom plate); the area of the bottom surface of the foundation distance broad-face supporting leg 5 is not less than 16 square meters (compared with the traditional foundation distance below 12 square meters and a tower body pre-embedded base structure, the grounding pressure of the foundation distance broad-face supporting leg 5 is greatly reduced, so that the geological foundation can be simply treated, and the foundation distance broad-face supporting leg is suitable for all terrains.

The utility model discloses a concrete in service behavior as follows:

will the utility model discloses when transporting to the job site, carry out the spelling according to above-mentioned structure description earlier: firstly, arranging four sets of fast positioning and pressing integrated support seats 4 and base distance broadside supporting legs 5 at corresponding positions on the ground; next, the lower support block 6-3 is fixed to the top surface of the upper base plate 4-2 in the support, and the coaxial line of the two is adjusted. Then, screwing the external thread section 6-1-2 of the sphere column 6-1 into the internal thread cavity 6-3-1 of the lower support block 6-3, and reversely buckling the upper support block 6-2 on the hemisphere structure 6-1-1 of the sphere column 6-1; then, the intermediate connecting member 3-1 is placed on the ground at the center; then horizontally rotating the two groups of folded linear beams 3-2 along the hinged ends of the diagonal crosses 3-1-2 to open, namely rotating until the linear beams 3-2 and the corresponding short beams in the diagonal crosses 3-1-2 are positioned on the same straight line, hoisting the middle connecting piece 3-1 and the four linear beams 3-2 to be right above the support 4, and fixedly welding the upper support block 6-2 on the corresponding position of the lower bottom surface of the far end of the linear beam 3-2 after the adjustment is in place; then, two long horizontal support rods 3-3 are hinged and supported between the far ends of the four straight beams 3-2 to form two opposite-vertex triangles, and two short horizontal support rods 3-4 are hinged between the middle part of each long horizontal support rod 3-3 and two near-end ends of the diagonal cross 3-1-2; then, butting the tower bottom base section 1 on the top of the upper connecting section 3-1-1 of the middle connecting piece 3-1; and finally, respectively hinging four inclined supports 2 between the top surfaces of the far ends of the four straight beams 3-2 and the upper parts of the chord members of the tower bottom base section on the corresponding side of the tower bottom base section 1. Thus, the utility model discloses just assembled fast and finish. When the utility model is used for supporting the wind power hoisting tower crane, the tower bottom base section 1 is directly lapped on the upper connecting section 3-1-1, and then the tower body standard section is lapped above the tower bottom base section 1, thereby having simple operation and convenient use.

After this stage of engineering construction finishes, wind-powered electricity generation hoist and mount tower machine need carry out the circulation of transition and use, demolish earlier upper portion with the tower body standard festival and tower bottom basis festival 1 in cross-section, will again the utility model discloses dismantle fast and transport: namely, only four inclined struts 2 need to be dismantled firstly, then a tower bottom foundation section 1 is dismantled, then horizontal short supporting rods 3-4 and horizontal long supporting rods 3-3 are dismantled, four straight beams 3-2 hinged with a diagonal cross 3-1-2 are divided into two groups to be horizontally rotated and folded for integral transportation, a rotary ball column 6-1 is separated from a lower support block 6-3, and a press block 5-2 is unscrewed to separate a support 4 and a support leg 5, so that the utility model discloses just the dismantlement is finished fast, transportation and transition can be carried out.

Claims

1. The utility model provides a wind-powered electricity generation hoist and mount tower machine truss-like chassis suitable for all-terrain weak earth pressure resists slope, including supporting truss-like cross chassis (3) below basic festival (1) bottom at the bottom of the tower, both ends articulate four bearing diagonal (2) at basic festival upper portion and cross chassis top surface at the bottom of the tower respectively, support four group's supports (4) and base distance broad face landing leg (5) of four distal ends belows in cross chassis (3), its characterized in that: each support (4) is combined with the cross-shaped underframe (3) through a height-adjustable spherical hinge assembly (6); the height-adjustable spherical hinge assembly (6) comprises a spherical column (6-1) which is formed by processing a cylinder, the upper part of the spherical column is of a hemispherical structure (6-1-1), the lower part of the spherical column is of an external thread section (6-1-2), an inner cavity is of a hemispherical groove (6-2-1) matched with the hemispherical structure (6-1-1), and is fixed on an upper supporting block (6-2) of the lower bottom surface of the farthest end of the cross-shaped underframe (3), and the inner cavity is of an internal thread cavity (6-3-1) matched with the external thread section (6-1-2) and is fixed on a lower supporting block (6-3) of the top surface of the support (4).

2. The truss type underframe of the wind power hoisting tower crane applicable to all-terrain weak ground pressure resisting inclination according to claim 1, wherein: the length of the external thread section (6-1-2) in the ball column (6-1) is greater than that of the internal thread cavity (6-3-1) in the lower supporting block (6-3).

3. The truss type underframe of the wind power hoisting tower crane applicable to all-terrain weak ground pressure resisting inclination according to claim 1, wherein: the cross-shaped underframe (3) comprises a middle connecting piece (3-1) formed by vertically superposing and fixedly combining an upper connecting section (3-1-1) and a diagonal cross (3-1-2), a straight beam (3-2) which is respectively hinged at four ends of the diagonal cross (3-1-2) and extends outwards, two horizontal long support rods (3-3) which are hinged and supported at the far ends of the four straight beams (3-2) and combined with the four straight beams (3-2) to form two opposite triangles, and four horizontal short support rods (3-4) which are supported at the four near ends of the diagonal cross (3-1-2) and the middle parts of the horizontal long support rods (3-3) at the corresponding sides; the cross section of the upper connecting section (3-1-1) is the same as that of the tower bottom base section (1).

4. The truss type underframe of the wind power hoisting tower crane applicable to all-terrain weak ground pressure resisting inclination according to claim 1, wherein: the upper ends of the four inclined supports (2) are respectively hinged to the upper parts of the four chord members of the tower bottom foundation section (1), and the lower ends of the four inclined supports (2) are respectively hinged to the top surfaces of the far ends of the four straight beams (3-2).

5. The truss type underframe of the wind power hoisting tower crane applicable to all-terrain weak ground pressure resisting inclination according to claim 1, wherein: the support (4) is of a quadrangular frustum pyramid structure consisting of a lower bottom plate (4-1), an upper bottom plate (4-2), a vertical rib plate (4-3) and a sealing plate (4-4); the lower bottom plate (4-1) extends outwards beyond the lower edge of the sealing plate (4-4); the center of the upper bottom plate (4-2) is provided with an internal thread matched with the external thread section (6-1-2) of the ball column (6-1) and matched with the internal thread cavity (6-3-1) in the lower support block (6-3).

6. The truss type underframe of the wind power hoisting tower crane applicable to all-terrain weak ground pressure resisting inclination according to claim 1, wherein: the base distance wide-surface supporting legs (5) are of a cuboid box-shaped structure, and positioning strips (5-1) and pressing blocks (5-2) are arranged on the base distance wide-surface supporting legs (5); the area of the bottom surface of the base distance broadside supporting leg (5) is not less than 16 square meters.