阅读说明：本技术 一种塔机变幅小车及塔机 (Tower crane becomes width of cloth dolly and tower crane ) 是由 朱毅 陈勇卫 靳玮勃 侯文海 陈爱丽 吕武平 刘立国 王永刚 李会丽 胡平利 王 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种塔机变幅小车及塔机,包括车架,所述车架的四角内侧分别设置有一个用于在塔机起重臂导轨上行走的行走轮机构,所有行走轮机构的底部位于同一平面内,其中,两个行走轮机构为能够沿竖直方向上下位移的浮动行走轮机构,其余的两个行走轮机构为固定行走轮机构；假想有一竖直平面将所述车架均分为两半,且所述竖直平面的水平延伸方向与塔机变幅小车在塔机起重臂导轨上的行走方向一致；则一个所述浮动行走轮机构位于所述竖直平面的一侧,另一个所述浮动行走轮机构位于所述竖直平面的另一侧。本发明能够保证塔机变幅小车的四个行走轮相对在一个平面上行走,进而使塔机变幅小车受力更加均匀。(The invention discloses a tower crane luffing trolley and a tower crane, which comprise a frame, wherein the inner sides of four corners of the frame are respectively provided with a walking wheel mechanism for walking on a guide rail of a tower crane boom, and the bottoms of all the walking wheel mechanisms are positioned in the same plane, wherein two walking wheel mechanisms are floating walking wheel mechanisms capable of vertically displacing, and the other two walking wheel mechanisms are fixed walking wheel mechanisms; a vertical plane is supposed to divide the frame into two halves, and the horizontal extension direction of the vertical plane is consistent with the walking direction of the tower crane luffing trolley on the guide rail of the tower crane boom; one of the travelling wheel assemblies is located on one side of the vertical plane and the other travelling wheel assembly is located on the other side of the vertical plane. The invention can ensure that four travelling wheels of the tower crane luffing trolley travel on a plane relatively, thereby ensuring that the tower crane luffing trolley is stressed more uniformly.)

1. The tower crane luffing trolley is characterized by comprising a frame (1), wherein the inner sides of four corners of the frame (1) are respectively provided with a travelling wheel mechanism for travelling on a guide rail of a tower crane boom, the bottoms of all the travelling wheel mechanisms are positioned in the same plane, two travelling wheel mechanisms are floating travelling wheel mechanisms (2) capable of vertically displacing, and the other two travelling wheel mechanisms are fixed travelling wheel mechanisms (3);

a vertical plane is supposed to divide the frame (1) into two halves, and the horizontal extension direction of the vertical plane is consistent with the walking direction of the tower crane luffing trolley on the guide rail of the tower crane boom; one of the floating travelling wheel mechanisms (2) is positioned on one side of the vertical plane, and the other floating travelling wheel mechanism (2) is positioned on the other side of the vertical plane.

2. The tower crane luffing trolley according to claim 1, wherein the two floating travelling wheel mechanisms (2) are arranged opposite to each other, and the two fixed travelling wheel mechanisms (3) are arranged opposite to each other.

3. The tower crane luffing trolley according to claim 1, wherein one of the floating travelling wheel mechanisms (2) is arranged opposite to one of the fixed travelling wheel mechanisms (3), and the other floating travelling wheel mechanism (2) is arranged opposite to the other fixed travelling wheel mechanism (3).

4. The tower crane luffing trolley as claimed in claim 1, wherein the floating travelling wheel mechanism (2) comprises travelling wheels (21), U-shaped plates (22), a first sliding rod (23), a sliding barrel (24) and an elastic member (25), the travelling wheels (21) are mounted between the U-shaped plates (22) through rotating shafts, one end of the first sliding rod (23) is connected to the outer wall of the bottom of the U-shaped plates (22), the other end of the first sliding rod (23) extends into the sliding barrel (24), the first sliding rod (23) and the sliding barrel (24) are in clearance fit, one end of the elastic member (25) abuts against the other end of the first sliding rod (23), the other end of the elastic member (25) abuts against the bottom of the sliding barrel (24), and the sliding barrel (24) is fixed on the frame (1).

5. The tower crane luffing trolley according to claim 4, wherein the floating travelling wheel mechanism (2) further comprises a second slide bar (26), the diameter of the second slide bar (26) is smaller than that of the first slide bar (23), a through hole is formed in the bottom of the slide cylinder (24), one end of the second slide bar (26) is connected to the other end of the first slide bar (23), the elastic member (25) is sleeved on the second slide bar (26), the other end of the second slide bar (26) extends out of the through hole, the second slide bar (26) is in clearance fit with the through hole, the other end of the second slide bar (26) is connected with a limiting plate (27), and the limiting plate (27) cannot pass through the through hole.

6. The tower crane luffing trolley according to claim 4, wherein the elastic member (25) is a compression spring or a disc spring.

7. The tower crane luffing trolley is characterized by comprising a frame (1), wherein the inner sides of four corners of the frame (1) are respectively provided with a travelling wheel mechanism used for travelling on a guide rail of a tower crane boom, the bottoms of all the travelling wheel mechanisms are located in the same plane, and all the travelling wheel mechanisms are floating travelling wheel mechanisms (2) capable of moving up and down along the vertical direction.

8. The tower crane luffing trolley according to any one of claims 1 to 7, wherein a lifting rope pulley block (4) connected to the frame (1) is arranged in the middle of the frame (1).

9. The tower crane luffing trolley according to claim 8, wherein a guide wheel set (5) for walking on the side of the guide rail of the tower crane boom is respectively arranged at the four corners of the frame (1) near the walking wheel mechanism.

10. A tower crane is characterized in that the tower crane boom guide rail is provided with the tower crane luffing trolley as claimed in claim 9.

Technical Field

The invention belongs to the technical field of tower cranes, and particularly relates to a tower crane luffing trolley and a tower crane.

Background

The traveling structure of the tower crane luffing trolley is arranged at four corners, and tower crane manufacturers at home and abroad adopt the type, as shown in fig. 1, the inner sides of the four corners of a frame 1 are respectively provided with a fixed traveling wheel mechanism 3 for traveling on a guide rail of a tower crane boom. The technical parameters of the existing tower crane luffing trolley are strictly controlled in the manufacturing process, and the technical parameters are difficult to control by manufacturers particularly on the planeness requirement of a traveling wheel of the tower crane luffing trolley; meanwhile, in the manufacturing process, due to the deformation caused by the stress after welding of the frame of the tower crane amplitude variation trolley, four travelling wheels of the tower crane amplitude variation trolley are difficult to travel on one plane relatively, and even if the four travelling wheels of the tower crane amplitude variation trolley travel on one plane relatively, later correction is difficult to ensure, so that the tower crane amplitude variation trolley is uneven in stress, and the condition of single-wheel unilateral abrasion often occurs in the using process.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a tower crane luffing trolley and a tower crane, which can ensure that four travelling wheels of the tower crane luffing trolley travel on a plane relatively, so that the tower crane luffing trolley is stressed more uniformly.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a tower crane luffing trolley comprises a frame, wherein the inner sides of four corners of the frame are respectively provided with a traveling wheel mechanism for traveling on a guide rail of a tower crane boom, the bottoms of all the traveling wheel mechanisms are positioned in the same plane, two traveling wheel mechanisms are floating traveling wheel mechanisms capable of vertically displacing up and down, and the other two traveling wheel mechanisms are fixed traveling wheel mechanisms;

a vertical plane is supposed to divide the frame into two halves, and the horizontal extension direction of the vertical plane is consistent with the walking direction of the tower crane luffing trolley on the guide rail of the tower crane boom; one of the travelling wheel assemblies is located on one side of the vertical plane and the other travelling wheel assembly is located on the other side of the vertical plane.

Furthermore, the two floating travelling wheel mechanisms are arranged oppositely, and the two fixed travelling wheel mechanisms are arranged oppositely.

Furthermore, one floating travelling wheel mechanism is opposite to one fixed travelling wheel mechanism, and the other floating travelling wheel mechanism is opposite to the other fixed travelling wheel mechanism.

Further, the walking wheel mechanism that floats includes walking wheel, U-shaped plate, first slide bar, slide cartridge and elastic component, the walking wheel is installed through the pivot between the U-shaped plate, the one end of first slide bar is connected the bottom outer wall of U-shaped plate, the other end of first slide bar stretches into in the slide cartridge, first slide bar with the slide cartridge is clearance fit, the one end of elastic component supports the other end of first slide bar, the other end of elastic component supports the bottom of slide cartridge, the slide cartridge is fixed on the frame.

Further, the walking wheel mechanism that floats still includes the second slide bar, the diameter of second slide bar is less than the diameter of first slide bar, the through-hole has been seted up to the bottom of slide cartridge, the one end of second slide bar is connected the other end of first slide bar, the elastic component cover is established on the second slide bar, the other end of second slide bar stretches out the through-hole, the second slide bar with the through-hole is clearance fit, the other end of second slide bar is connected with the limiting plate, the limiting plate can not pass the through-hole.

Further, the elastic part is a compression spring or a disc spring.

The tower crane luffing trolley comprises a frame, wherein traveling wheel mechanisms used for traveling on guide rails of a tower crane boom are arranged on the inner sides of four corners of the frame respectively, the bottoms of all the traveling wheel mechanisms are located in the same plane, and all the traveling wheel mechanisms are floating traveling wheel mechanisms capable of moving up and down along the vertical direction.

Furthermore, the middle part of the frame is provided with a lifting rope pulley block connected to the frame.

Furthermore, the four corners of the frame, which are close to the traveling wheel mechanism, are respectively provided with a guide wheel set for traveling on the side surface of the guide rail of the crane boom.

The tower crane has a tower crane boom guide rail on which the tower crane luffing trolley is mounted.

Compared with the prior art, the invention has at least the following beneficial effects: the invention provides a tower crane luffing dolly, wherein the inner sides of four corners of a frame are respectively provided with a walking wheel mechanism for walking on a tower crane boom guide rail, the bottoms of all the walking wheel mechanisms are positioned in the same plane, two walking wheel mechanisms are floating walking wheel mechanisms capable of moving up and down along the vertical direction, the other two walking wheel mechanisms are fixed walking wheel mechanisms, the arrangement positions of the two floating walking wheel mechanisms are not positioned at the same side of the frame, namely, after the tower crane luffing dolly of the invention is arranged on the tower crane boom guide rail, one floating walking wheel mechanism is positioned at one side of the tower crane boom, the other floating walking wheel mechanism is positioned at the other side of the tower crane boom, more specifically, after the tower crane luffing dolly of the invention is arranged on the tower crane boom guide rail, the two floating walking wheel mechanisms are arranged oppositely, the two fixed travelling wheel mechanisms are arranged oppositely; or one floating travelling wheel mechanism is arranged opposite to one fixed travelling wheel mechanism, and the other floating travelling wheel mechanism is arranged opposite to the other fixed travelling wheel mechanism. The walking wheel mechanism designed in this way has the advantages that: the four travelling wheels can be always in contact with the guide rail of the crane boom, the problem that the travelling wheels are not in good contact with the lower chord of the crane boom when the crane luffing trolley travels due to the deformation of a structural member of the crane luffing trolley in the welding process and the deformation of the crane boom in the welding process is solved, and finally the four travelling wheels of the crane luffing trolley can travel on one plane relatively, so that the tower crane luffing trolley is more uniformly stressed, the process of correcting the frame of the tower crane luffing trolley at the later stage is reduced, and the tower crane luffing trolley is more time-saving, labor-saving and cost-saving in the process of machining and manufacturing.

Furthermore, the floating travelling wheel mechanism comprises travelling wheels, U-shaped plates, a first sliding rod, a sliding cylinder and an elastic element, wherein the travelling wheels are installed between the U-shaped plates through a rotating shaft, one end of the first sliding rod is connected to the outer wall of the bottom of the U-shaped plates, the other end of the first sliding rod extends into the sliding cylinder, the first sliding rod and the sliding cylinder are in clearance fit, one end of the elastic element abuts against the other end of the first sliding rod, the other end of the elastic element abuts against the bottom of the sliding cylinder, and the sliding cylinder is fixed on a frame.

Further, the running wheel mechanism that floats still includes the second slide bar, the diameter of second slide bar is less than the diameter of first slide bar, the through-hole has been seted up to the bottom of slide cartridge, the other end at first slide bar is connected to the one end of second slide bar, the elastic component cover is established on the second slide bar, the through-hole is stretched out to the other end of second slide bar, second slide bar and through-hole are clearance fit, the other end of second slide bar is connected with the limiting plate, the limiting plate can not pass the through-hole, design benefit is favorable to the tower machine to become the width of cloth dolly and installs this floating installation, guarantee floating installation's whole.

Furthermore, the elastic part is a pressure spring or a disc spring, so that the material is convenient to obtain and the cost is low.

The tower crane luffing trolley comprises a frame, wherein traveling wheel mechanisms used for traveling on guide rails of a tower crane boom are arranged on the inner sides of four corners of the frame respectively, the bottoms of all the traveling wheel mechanisms are located in the same plane, and all the traveling wheel mechanisms are floating traveling wheel mechanisms capable of moving up and down along the vertical direction.

A tower crane is characterized in that a tower crane boom guide rail is provided with a tower crane luffing trolley, the tower crane is matched with the tower crane luffing trolley, and the service life of the whole tower crane is prolonged in the matching of the boom and a tower crane luffing trolley walking part.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a tower crane luffing trolley in the prior art;

FIG. 2 is a schematic structural diagram of a tower crane luffing trolley in the invention;

FIG. 3 is a schematic structural diagram of a floating travelling wheel mechanism in the tower crane luffing trolley.

In the figure: 1-a vehicle frame; 2-a floating travelling wheel mechanism; 21-a travelling wheel; 22-U-shaped plate; 23-a first slide bar; 24-a slide cylinder; 25-an elastic member; 26-a second slide bar; 27-a limiting plate; 3-fixing a traveling wheel mechanism; 4-lifting a rope pulley block; 5-guide wheel group.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As a specific embodiment of the invention, as shown in fig. 2, the tower crane luffing trolley of the invention comprises a frame 1, wherein the frame 1 is a cubic or rectangular frame structure formed by welding a plurality of rod pieces, and a lifting rope pulley block 4 connected to the frame 1 is arranged in the middle of the frame 1. The inner sides of four corners of the frame 1 are respectively provided with a traveling wheel mechanism used for traveling on a guide rail of a crane boom of the tower crane, the bottoms of all the traveling wheel mechanisms are positioned in the same plane, and specifically all the traveling wheel mechanisms are positioned at the top of the frame 1. The four corners of the frame 1 are respectively provided with a guide wheel group 5 which is used for walking on the side surface of the guide rail of the crane boom.

As a preferred embodiment of the present invention, two of the travelling wheel mechanisms are floating travelling wheel mechanisms 2 capable of vertically displacing, and the other two travelling wheel mechanisms are fixed travelling wheel mechanisms 3, and the two floating travelling wheel mechanisms 2 capable of vertically displacing are required to satisfy the following arrangement position conditions: for the convenience of clearly explaining the arrangement position conditions of the floating travelling wheel mechanisms 2, a vertical plane is supposed to divide the frame 1 into two halves, and the horizontal extension direction of the vertical plane is consistent with the travelling direction of the tower crane luffing trolley on the guide rail of the tower crane boom, so that one floating travelling wheel mechanism 2 is positioned on one side of the vertical plane, and the other floating travelling wheel mechanism 2 is positioned on the other side of the vertical plane.

Specifically, in one embodiment, as shown in fig. 2, the two floating road wheel mechanisms 2 are arranged opposite to each other, and the two fixed road wheel mechanisms 3 are arranged opposite to each other.

Of course, in another embodiment, one floating road wheel mechanism 2 is arranged opposite to one fixed road wheel mechanism 3, and the other floating road wheel mechanism 2 is arranged opposite to the other fixed road wheel mechanism 3, that is, two floating road wheel mechanisms 2 are arranged at the diagonal position of the frame structure.

As another embodiment of the invention, all the travelling wheel mechanisms are floating travelling wheel mechanisms 2 capable of moving up and down along the vertical direction, that is, all the four travelling wheel mechanisms are floating travelling wheel mechanisms 2 capable of moving up and down along the vertical direction, and of course, the embodiment has relatively high manufacturing cost, and through practice verification, only two travelling wheel mechanisms are required to be the floating travelling wheel mechanisms 2, and the problem of uneven stress caused by the fact that travelling wheels of the tower crane luffing trolley are not on the same plane can be well solved by arranging the travelling wheel mechanisms according to the position.

On the basis of the above embodiment, the present invention provides a specific design structure of the floating traveling wheel mechanism 2, as shown in fig. 2 and fig. 3, the floating traveling wheel mechanism 2 includes a traveling wheel 21, a U-shaped plate 22, a first sliding rod 23, a sliding cylinder 24 and an elastic element 25, the traveling wheel 21 is installed between the U-shaped plates 22 through a rotating shaft, one end of the first sliding rod 23 is connected to the outer wall of the bottom of the U-shaped plate 22, the other end of the first sliding rod 23 extends into the sliding cylinder 24, the first sliding rod 23 and the sliding cylinder 24 are in clearance fit, one end of the elastic element 25 abuts against the other end of the first sliding rod 23, the other end of the elastic element 25 abuts against the bottom of the sliding cylinder 24, and the sliding cylinder 24 is fixed on the frame. Specifically, the first sliding rod 23 and the U-shaped plate 22 may be connected by welding or integrally formed; the slide tube 24 and the frame 1 can be connected by welding or by screw thread.

Preferably, the floating travelling wheel mechanism 2 further comprises a second slide bar 26, the diameter of the second slide bar 26 is smaller than that of the first slide bar 23, a through hole is formed in the bottom of the slide cylinder 24, one end of the second slide bar 26 is connected to the other end of the first slide bar 23, the elastic piece 25 is sleeved on the second slide bar 26, the other end of the second slide bar 26 extends out of the through hole, the second slide bar 26 is in clearance fit with the through hole, the other end of the second slide bar 26 is connected with a limiting plate 27, and the limiting plate 27 cannot penetrate through the through hole. Specifically, the second slide bar 26 and the first slide bar 23 may be connected by welding or integrally formed.

The elastic part 25 in the above embodiment can adopt a pressure spring or a disc spring, and is specifically flexibly selected according to the model of the tower crane, for example, a small-sized tower crane adopts a pressure spring, and for a large-sized tower crane, a disc spring with better performance is preferentially selected.

Of course, the floating travel wheel mechanism 2 may be of a floating type such as hydraulic, electric, or pneumatic, and is not limited to the preferred embodiment described above.

The invention discloses a tower crane, wherein a tower crane boom guide rail is provided with a tower crane luffing trolley, and the comprehensive performance of the tower crane is better.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.