CN218968726U - Crane tower body bearing structure and crane - Google Patents

Abstract

The utility model provides a crane tower body bearing structure and a crane. The chassis comprises a heart plate and a plurality of supporting legs which are arranged on the heart plate at intervals around the heart plate; each supporting leg extends towards the periphery direction of the heart plate, and the end part of each supporting leg is provided with a supporting leg upright post for jacking up the chassis. One or adjacent ones of the legs have a length shorter than the length of the other legs. According to the crane tower body bearing structure, a telescopic tower body is arranged in the middle of four supporting legs, four brackets are arranged at the upper part of the tower body, four pull belts are connected with the four supporting legs and have a certain pretightening force, so that a stable structure is formed, and a rotatable lifting device is arranged at the top of the structure; through the asymmetric design of the support, when in hoisting, the weight to be hoisted can be closer to the wind power tower, and the contradiction between the load radius and interference is solved, so that the hoisting capacity of the crane is improved through close-range hoisting in a narrow place.

Description

Crane tower body bearing structure and crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a crane tower body bearing structure. In addition, the utility model also relates to a crane.

Background

Because wind power plants are arranged in areas with little human smoke such as hills, mountains, grasslands, beaches and the like, the wind power construction project has the characteristics of small construction area, high mobility, short construction period, long-time operation in a strong wind environment and the like, and therefore, the crane operation efficiency of the wind power equipment installation team has higher requirements.

In wind power hoisting construction projects, construction is usually carried out by means of hoisting machinery, and the hoisting machinery is multiple in variety, so that the equipment applied to the working conditions is multiple. Generally, the cranes used in wind power hoisting sites mainly include three types of automobile cranes, tire cranes and crawler cranes.

Wherein, the automobile crane is a crane arranged on a common automobile chassis or a special automobile chassis. The crane has the advantages of good maneuverability and rapid transfer. The disadvantage is that the support leg is needed when working, and the load cannot run. The chassis performance of the truck crane is equal to that of a truck with the same total weight of the whole truck, and meets the technical requirements of road vehicles, so that the truck crane can pass on various roads without resistance. Such cranes are generally equipped with two control rooms for loading and unloading, and the legs must be extended to remain stable during operation. The range of hoisting capacities is large, being the largest yield, the most widely used crane type. The crawler crane has large capacity, but has huge weight, complex assembly and special field and low efficiency, and is not suitable for the hoisting scene of wind power blades.

In the lifting operation, because the wind power tower is fixed, the crane needs stronger lifting capacity when lifting the wind power blade, and the crane is far away from the wind power tower when lifting the wind blade, and the installation of the wind blade has certain difficulty.

Disclosure of Invention

In view of the above, the present utility model aims to provide a crane tower body bearing structure, so as to shorten the distance between the hoisting equipment and the wind power tower and improve the hoisting capability.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a crane tower body bearing structure comprises a chassis and a tower body arranged on the chassis; the chassis comprises a heart plate and a plurality of supporting legs which are arranged on the heart plate at intervals around the axis of the heart plate; each supporting leg extends towards the peripheral direction of the heart plate, and the end part of each supporting leg is provided with a supporting leg upright post for jacking up the chassis; one or adjacent ones of the legs have a length shorter than the length of the other legs.

Further, the support legs comprise a first support leg, a second support leg, a third support leg and a fourth support leg which are uniformly distributed around the axis of the chassis at intervals; the second supporting leg, the third supporting leg and the fourth supporting leg are arranged in equal length, and the length of the first supporting leg is 0.6-0.8 times of that of the second supporting leg.

Further, the tower body comprises a plurality of tower bodies which are nested and arranged, and a lifting driving unit; and under the driving of the lifting driving unit, each tower body can be stretched to the highest state in a telescopic rod mode.

Further, the length of the second supporting leg is 0.08-0.16 times of the height of the tower body in the highest state.

Further, each supporting leg is detachably arranged on the heart plate, and/or a plurality of groups of hydraulic driving wheels are arranged at the bottom of the chassis.

Further, a plurality of groups of core disc pin lugs which are arranged at intervals are arranged on the core disc; the bottom of the tower body is connected with the pin lug of the heart disk through a pin rod, so that the tower body is fixed on the heart disk in a vertical posture.

Further, the crane tower bearing structure further comprises a reinforcing structure connected between the tower body and each supporting leg.

Further, the reinforcing structure comprises a top support arranged at the top of the tower body, a middle support arranged in the middle of the tower body and a plurality of pull belts arranged corresponding to the supporting legs; the top support and the middle support are respectively provided with a plurality of supporting rods which are arranged corresponding to the pull belts; each drawstring is sequentially connected with the corresponding end part of the supporting leg, the corresponding end part of the supporting rod on the middle support and the corresponding end part of the supporting rod on the top support.

Further, the reinforcing structure comprises a plurality of fixing pull bars arranged corresponding to the supporting legs, a hoop is sleeved at the top of the tower body at the bottom end of the tower body, and each fixing pull bar is connected between the hoop and the corresponding supporting leg.

Compared with the prior art, the embodiment has the following advantages:

according to the crane tower body bearing structure, the lengths of one or a plurality of adjacent brackets are shorter than those of other brackets, and the weight to be hoisted can be closer to the wind power tower body during hoisting through the asymmetric design of the brackets and the elliptic center plate, so that the load is effectively utilized, the contradiction between the load radius and interference is solved, the operation site is effectively utilized, and the hoisting capacity of the crane tower body bearing structure is improved through close-range hoisting.

Another object of the utility model is to propose a crane employing a crane tower carrying structure as described above.

According to the crane, the whole height is increased by adopting the crane tower body bearing structure, the lifting capacity can be enhanced while the height is increased, the lifting safety is ensured, and the working efficiency can be improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model, wherein the words of front and back, top and bottom, etc. are used to indicate relative position and are not intended to limit the utility model unduly. In the drawings:

fig. 1 is a schematic overall structure diagram of a tower bearing structure of a crane according to an embodiment of the utility model;

fig. 2 is a schematic structural view illustrating the expansion of a tower bearing structure of a crane according to an embodiment of the utility model;

fig. 3 is a top view of a tower bearing structure of a crane according to an embodiment of the utility model

FIG. 4 is a schematic view of a transplanting vehicle for transferring heart plates according to an embodiment of the utility model;

fig. 5 is a schematic view of a tower transporting vehicle for transferring towers according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a chassis; 10. a support leg; 100. a supporting leg upright post; 101. a first leg; 102. a second leg; 103. a third leg; 104. a fourth leg; 11. a heart plate; 110. a pin rod; 111. a heart plate pin ear; 112. a leg mounting portion; 113. a center plate jack cylinder;

2. transplanting the vehicle; 20. a tower body transport vehicle; 21. a driving wheel; 200. a bearing plate;

3. a tower body; 30. a tower body; 31. a top bracket; 32. a middle bracket; 33. pulling a belt; 50. fixing a pull rod; 51. a ferrule; 6. and (5) loading the assembly.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The embodiment relates to a crane tower body bearing structure, which comprises a chassis 1 and a tower body 3 arranged on the chassis 1. Wherein, chassis 1 includes heart dish 11, and a plurality of landing legs 10 that encircle the axis interval setting of heart dish 11 on heart dish 11, each landing leg 10 all extends towards heart dish 11's peripheral direction, and the tip of landing leg 10 is equipped with the landing leg stand 100 that is used for jack-up chassis 1. Meanwhile, in each leg 10, the length of one or adjacent ones of the legs 10 is shorter than the length of the other legs 10.

According to the structure, as the length of one or a plurality of adjacent supporting legs 10 in each supporting leg 10 is shorter than that of the other supporting legs 10, the weight to be hoisted can be closer to the tower body of the wind power tower during hoisting through the asymmetric design of the supporting legs 10, so that the load is effectively utilized, the contradiction between the radius of the load and interference is solved, the operation site can be effectively utilized, and the hoisting capacity of the bearing structure of the tower body of the crane is improved through short-distance hoisting.

Based on the above overall design, an exemplary structure of the crane tower bearing structure of the present embodiment is shown in fig. 1 to 3, and it should be noted that the above-mentioned support leg 10 includes a first support leg 101, a second support leg 102, a third support leg 103 and a fourth support leg 104 that are uniformly distributed around the axis of the chassis 1 at intervals. The second leg 102, the third leg 103 and the fourth leg 104 are equal in length, and the length of the first leg 101 is 0.6-0.8 times that of the second leg 102. In this embodiment, if the lengths of the second leg 102, the third leg 103 and the fourth leg 104 are 20 meters, the length of the first leg 101 may be 12 meters, 14 meters, 15 meters or 16 meters.

During hoisting operation, the wind power tower can be located on one side where the first supporting leg 101 is located, and corresponds to the first supporting leg 101 or is located on one of two sides of the first supporting leg 101. Through the asymmetric design of the first supporting leg 101, the second supporting leg 102, the third supporting leg 103 and the fourth supporting leg 104, when in hoisting, a weight to be hoisted can be closer to the tower body of the wind power tower, the load is effectively utilized, the contradiction between the radius of the load and interference is solved, and the hoisting capacity of the bearing structure of the tower body of the crane can be improved by utilizing close-range hoisting due to the fact that the operation field on the mountain is generally smaller.

In addition, the center plate 11 of the embodiment is preferably elliptical, and because the wind power tower is located on the side where the first supporting leg 101 is located, when the center plate 11 is elliptical, the supporting leg mounting portions 112 are disposed at the left and right sides of two ends of the ellipse, so that the wind power tower is closer to the tower body 3, and the construction operation of the wind power tower is facilitated. Of course, the heart plate 11 may be rectangular instead of elliptical. In addition, in order to facilitate the movement of the heart plate 11, in this embodiment, four small heart plate supporting legs arranged at intervals may be additionally arranged on the heart plate 11, and the four small heart plate supporting legs are provided with jacking cylinders, so that when the heart plate 11 is transferred, the heart plate 11 may be jacked up by the jacking cylinders, so that a gap is left between the heart plate 11 and the bottom surface, and then the heart plate 11 enters below the heart plate 11 by using the transplanting vehicle, and then the jacking cylinders are slowly retracted, so that the heart plate 11 can fall onto the transplanting vehicle.

Specifically, the tower body 3 includes a plurality of tower bodies 30 which are nested, and a lifting drive unit; the towers 30 can be driven by the lifting driving unit to extend the tower body 3 to the highest state in a telescopic rod mode. The lifting drive unit is referred to the construction of the crane tower 3 of the prior art and will not be described in detail here. The length of the second leg 102 is 0.08 to 0.16 times the height of the tower body 3 in the highest state. For example, the length of the second leg 102 is 20 m, and the height of the tower body 3 may reach 154 m to 200 m.

In this embodiment, each supporting leg 10 is detachably disposed on the core plate 11, and the core plate 11 is provided with a plurality of supporting leg mounting portions 112 for connecting with the supporting leg 10, and the supporting leg mounting portions 112 and the supporting leg 10 can be connected by pin insertion. In actual installation, the legs 10 and the core plate 11 are detachably connected by adopting a pin shaft, and the legs 10 are transported to a construction site, and the legs 10 and the core plate 11 are required to be installed and fixed on the site by an auxiliary crane.

As shown in connection with fig. 4 and 5, in order to facilitate the movement and loading of the heart plate 11, each leg 10 should be removed from the heart plate 11 first when it is desired to move the chassis 1. Meanwhile, in this embodiment, four removable heart plate jacking cylinders 113 are arranged on the heart plate 11 at intervals, when the heart plate 11 is transferred, the heart plate 11 can be jacked up by the heart plate jacking cylinders 113, so that a space is reserved between the heart plate 11 and the ground, then the transplanting vehicle 2 is used to enter the position below the heart plate 11, and then the heart plate 11 can be dropped onto the transplanting vehicle 2 by slowly retracting the heart plate jacking cylinders 113; the center tray lifting cylinder 113 is then detached from the center tray 11 and also placed on the transplanting car 2. The transplanting vehicle 2 moves on the operation site with the center plate 11, and the supporting legs 10 of the chassis 1 are detached from the center plate 11 and then are transported and moved by other transplanting vehicles 2.

In addition, to facilitate the transportation and fixing of the tower 3, a special tower transport vehicle 20 may be provided, and multiple sets of driving wheels 21 are provided at the bottom of the tower transport vehicle 20 to drive the tower transport vehicle 20 to move. Meanwhile, a supporting plate 200 is arranged on the tower body transport vehicle 20, and the supporting plate 200 is provided with a groove matched with the outer diameter of the tower body 3, so that the tower body 3 is clamped on the supporting plate 200, and the tower body 3 is prevented from falling off in the transport process.

For the connection mode between the heart plate 11 and the tower body 3, specifically, a plurality of groups of heart plate pin ears 111 which are arranged at intervals are arranged on the heart plate 11; the bottom of the tower body 3 is connected with the core plate pin ear 111 through the pin rod 110, so that the tower body 3 is fixed on the core plate 11 in a vertical posture. The pin 110 is bolted, so that the device has the characteristics of simple structure, convenient disassembly and assembly and strong bearing performance.

On the working site, a worker can erect the tower body 3 through a tower crane or auxiliary lifting equipment and the like, so that the tower body 3 can be converted between a horizontal posture and a vertical posture, and the tower body 3 is vertically fixed on the heart disk 11 through the pin rod 110 and the heart disk pin lug 111.

Referring back to fig. 2, in order to improve stability and safety during lifting of the crane, as a preferred embodiment of this embodiment, the crane tower carrying structure further includes a reinforcing structure connected between the tower 3 and each leg 10.

Specifically, the reinforcing structure includes a top bracket 31 provided at the top of the tower body 3, a middle bracket 32 provided in the middle of the tower body 3, and a plurality of pull straps 33 provided corresponding to the top bracket 31 and the middle bracket 32. Wherein, the top bracket 31 and the middle bracket 32 each have a plurality of struts corresponding to the pull straps 33, and each pull strap 33 is sequentially connected to the end of each leg 10, the end of the corresponding strut on the middle bracket 32, and the end of the corresponding strut on the top bracket 31. In this way, the four pull straps 33 are connected with the four support legs 10 and have a certain pretightening force, so that a stable structure is formed with the whole tower body 3; a rotatable lifting device can be mounted on top of the tower body 3 as a top assembly 6. The stretching straps 33 are stretched by the cylinders to be in a straight line in a traction state, so that a certain stress is provided on each stretching strap 33 to improve the stability of the tower body 3.

Through setting up middle part support 32 at tower body 3 middle part, make tower body 3 connect the reinforcement mode of four stretching straps 33 of landing leg 10 by top support 31, become by top support 31 to middle part support 32, the reinforcement mode of eight stretching straps 33 of middle part support 32 to landing leg 10 to increase the pulling force between landing leg 10 and the tower body 3, improve the stability of tower body 3 in the hoist and mount process.

In addition, the reinforcement structure includes a plurality of fixing bars 50 disposed corresponding to the respective legs 10, and each fixing bar 50 is connected to the top of the tower body 30 at the bottom end of the tower body 3 (i.e., the upper position of the first tower body 30 of the tower body 3). Specifically, a collar 51 may be sleeved on top of the tower 30, and the fixing tie bar 50 is connected between the collar 51 and the corresponding leg 10. It can be understood that the number of the fixing bars 50 corresponding to the number of the supporting legs 10 is four, and the fixing bars 50 are connected between the supporting legs 10 and the tower body 3 to form a triangle structure, so that a better fixing effect can be achieved, and the stability of the tower body 3 is further improved.

According to the crane tower body bearing structure, due to the oval design of the heart plate 11 and the fact that the length of one or a plurality of adjacent supporting legs 10 in each supporting leg 10 is shorter than that of the other supporting legs 10, the weight to be hoisted can be closer to the wind power tower body during hoisting through the asymmetric design of the supporting legs 10, the load is effectively utilized, the contradiction between the radius of the load and interference is solved, the operation site can be effectively utilized, and the hoisting capacity of the crane tower body bearing structure is improved through close-range hoisting.

Example two

The present embodiment relates to a crane employing the crane tower bearing structure provided in the first embodiment. It should be noted that the installation of the upper assembly 6 and the tower body 3 can be completed by using conventional hoisting equipment when the tower body 3 is not yet stretched; the upper assembly 6 is pivoted on the tower 3 for the hoisting operation, and the upper assembly 6 is referred to a crane in the prior art, which is not described in detail in this embodiment.

According to the crane disclosed by the embodiment, the whole height is increased by adopting the crane tower body bearing structure disclosed by the embodiment I, the lifting capacity can be enhanced while the height is increased, the lifting safety is ensured, and the working efficiency can be improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A crane tower body bearing structure, which comprises a chassis (1) and a tower body (3) arranged on the chassis (1); the method is characterized in that:

the chassis (1) comprises a heart plate (11) and a plurality of support legs (10) which are arranged on the heart plate (11) at intervals around the axis of the heart plate (11); each supporting leg (10) extends towards the peripheral direction of the heart plate (11), and a supporting leg upright post (100) for jacking up the chassis (1) is arranged at the end part of each supporting leg (10);

the length of one or adjacent ones of the legs (10) is shorter than the length of the other ones of the legs (10).

2. The crane tower bearing structure of claim 1 wherein:

the support legs (10) comprise first support legs (101), second support legs (102), third support legs (103) and fourth support legs (104) which are uniformly distributed around the axis of the chassis (1) at intervals;

the second supporting leg (102), the third supporting leg (103) and the fourth supporting leg (104) are arranged in equal length, and the length of the first supporting leg (101) is 0.6-0.8 times that of the second supporting leg (102).

3. The crane tower carrying structure of claim 2 wherein:

the tower body (3) comprises a plurality of tower bodies (30) which are nested and arranged, and a lifting driving unit;

under the drive of the lifting driving unit, each tower body (30) can stretch the tower body (3) to the highest state in a telescopic rod mode.

4. A crane tower bearing structure according to claim 3, wherein:

the length of the second supporting leg (102) is 0.08-0.16 times of the height of the tower body (3) in the highest state.

5. A crane tower bearing structure according to claim 3, wherein:

each supporting leg (10) is detachably arranged on the heart plate (11), and/or a plurality of groups of hydraulic driving wheels (21) are arranged at the bottom of the chassis (1).

6. A crane tower bearing structure according to claim 3, wherein:

a plurality of groups of core disc pin lugs (111) which are arranged at intervals are arranged on the core disc (11);

the bottom of the tower body (3) is connected with the core plate pin lug (111) through a pin rod (110), so that the tower body (3) is fixed on the core plate (11) in a vertical posture.

7. Crane tower carrying structure according to any of claims 3 to 6, characterized in that:

the crane tower carrying structure further comprises a reinforcing structure connected between the tower (3) and each of the legs (10).

8. The crane tower bearing structure of claim 7 wherein:

the reinforcing structure comprises a top support (31) arranged at the top of the tower body (3), a middle support (32) arranged in the middle of the tower body (3) and a plurality of pull belts (33) arranged corresponding to the supporting legs (10);

each drawstring (33) is sequentially connected with the end part of the top bracket (31), the end part of the middle bracket (32) and the corresponding end part of the supporting leg (10).

9. The crane tower bearing structure of claim 7 wherein:

the reinforcing structure (5) comprises a plurality of fixing pull bars (50) which are arranged corresponding to the supporting legs (10), a hoop (51) is sleeved on the top of the tower body (30) at the bottom end of the tower body (3), and each fixing pull bar (50) is connected between the hoop (51) and the corresponding supporting leg (10).

10. A crane, characterized in that: the crane employs a crane tower carrying structure according to any one of claims 1 to 9.

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