CN113264126A

CN113264126A - Crawler frame and crawler crane

Info

Publication number: CN113264126A
Application number: CN202110727361.6A
Authority: CN
Inventors: 潘丹丹; 丁美莲; 田洪杰; 王亚生
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-08-17
Anticipated expiration: 2041-06-29
Also published as: CN113264126B

Abstract

The invention relates to a track frame and a crawler crane, wherein the track frame comprises a track (30) and a supporting box body (10) for supporting the track (30), the supporting box body (10) comprises a cover plate (11), a bottom plate (12) and a plurality of lug plates (13), the lug plates (13) are respectively connected between the cover plate (11) and the bottom plate (12), and the lug plates (13) are arranged at intervals along the length direction of the cover plate (11) and the bottom plate (12); the cover plate (11) comprises at least two split cover plates (111), one side of each lug plate (13) far away from the bottom plate (12) is connected between the two adjacent split cover plates (111), and therefore a connecting welding seam of each lug plate (13) and the cover plate (11) is located on one side of the cover plate (11) far away from the bottom plate (12). The connecting weld joint of the lug plate and the cover plate is positioned on one side of the cover plate far away from the bottom plate, so that the operation is convenient to carry out on the outer side of the cover plate, the convenience in operation is improved, the quality of the weld joint is also improved, and the reliability of connection is improved.

Description

Crawler frame and crawler crane

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a crawler frame and a crawler crane.

Background

The crawler crane adopts a crawler traveling chassis. The crawler frame is formed by assembling four wheels, a driving device and the like by a structure formed by welding plates, is used for realizing the functions of walking, turning and the like of the crane, and is a main component part of the crane for getting off. The crawler frame structure is a box-type structure formed by welding plates and used for assembling four wheels and a belt. The form of the structure of the crawler frame directly influences the production process performance of the crawler frame.

In the related technology, the welding quality of the crawler frame structure is poor, the repair work amount is large after deformation occurs, and the structure needs to be further improved.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The embodiment of the invention provides a crawler frame and a crawler crane, which can effectively improve the welding quality.

According to an aspect of the present invention, there is provided a track frame including a track and a support case for supporting the track, the support case including:

a cover plate;

a base plate; and

the plurality of ear plates are respectively connected between the cover plate and the bottom plate and are arranged at intervals along the length direction of the cover plate and the bottom plate;

the cover plate comprises at least two split cover plates, one side of each lug plate, which is far away from the bottom plate, is connected between the two adjacent split cover plates, so that the connecting welding seam of each lug plate and the cover plate is positioned on one side of the cover plate, which is far away from the bottom plate.

In some embodiments, the supporting box body further comprises an end plate, a driving frame and a wrapping plate, wherein the driving frame is used for installing the driving device, the end plate is connected to the end portions of the cover plate and the bottom plate, the driving frame is installed on the end plate, and the wrapping plate is wrapped on the outer side of the driving frame.

In some embodiments, the supporting box body further comprises two mounting plates for mounting the speed reducer, the two mounting plates are respectively arranged on two sides of the driving frame, the radial length of the mounting plates is greater than that of the driving frame, a groove is formed between the circumferential side surface of the driving frame and the two mounting plates, and the wrapping plate comprises a first split wrapping plate arranged inside the groove, so that a connecting welding seam of the first split wrapping plate and the mounting plates is located on the outer side of the driving frame.

In some embodiments, the wrapper sheet comprises a first packet sheet wrapped around the periphery of the drive frame and a second packet sheet connected between the side of the first packet sheet and the end plate.

In some embodiments, the supporting box body further comprises a plurality of attaching plates, the bottom plate is provided with a plurality of first mounting holes for mounting the thrust wheels, the attaching plates are mounted at the first mounting holes, and the attaching plates are provided with second mounting holes communicated with the first mounting holes.

In some embodiments, the patch panel is elongated.

In some embodiments, the support box further comprises a plurality of first reinforcing plates connected between a side of the end plate remote from the drive rack and the cover plate and between a side of the end plate remote from the drive rack and the bottom plate.

In some embodiments, the support box further comprises a second reinforcement panel connected to the plurality of first reinforcement panels to form a reinforced box.

In some embodiments, the reinforcement box is provided with lightening holes.

According to another aspect of the invention, there is provided a crawler crane comprising the track frame described above.

Based on the technical scheme, the cover plate is of a split structure, the lug plate is connected between two adjacent split cover plates, and therefore the connecting welding line of the lug plate and the cover plate is located on one side of the cover plate far away from the bottom plate, operation is convenient to carry out on the outer side of the cover plate, operation convenience is improved, welding line quality is improved, and connecting reliability is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic structural diagram of one embodiment of the track frame of the present invention.

Fig. 2 is a schematic top view of a supporting box in the related art.

Fig. 3 is a sectional view taken along a-a in fig. 2.

Fig. 4 is a schematic bottom view of a support box according to the related art.

Fig. 5 is a schematic top view of a support housing according to an embodiment of the track frame of the present invention.

Fig. 6 is a schematic bottom view of a support housing according to an embodiment of the track frame of the present invention.

In the figure:

10. supporting the box body; 20. a thrust wheel; 30. a crawler belt;

11a, a cover plate; 12a, a bottom plate; 13a, ear plates; 131. beveling; 16a, wrapping a board;

11. a cover plate; 111. a split cover plate; 12. a base plate; 121. a bottom plate body; 122. pasting a board; 123. a second mounting hole; 13. an ear plate; 14. an end plate; 15. a driving frame; 16. wrapping a plate; 161. a first split wrapper sheet; 162. a second body-divided wrapper sheet; 17. mounting a plate; 18. reinforcing the box body; 181. a first reinforcing plate; 182. a second reinforcing plate; 183. lightening holes; 19. and extruding the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.

Aiming at the problem of poor welding quality of the crawler frame in the related art, the inventor conducts a great deal of research and finds that in the related art, the key welding seam between the main lug plate and the upper cover plate on the crawler frame of the medium-tonnage crawler crane is poor in welding quality, and the main reason is that: as shown in fig. 2 and 3, the grooves 131 are formed on both sides of the ear plate 13a, and fillet welds are added during welding, so that the welding amount is large, and the welds are located inside the supporting box below the cover plate 11a, which results in poor accessibility, difficulty in quality assurance, and difficulty in detection. Based on these findings, the inventors have made improvements to the structure of the track frame.

As shown in fig. 1, in some embodiments of the track frame provided by the present invention, the track frame includes a support housing 10, a track roller 20, and a track 30, the support housing 10 is used for supporting the track 30, the track roller 20 is installed below the support housing 10, and the track 30 is wound around the outer circumference of the support housing 10 and the track roller 20. The track frame further comprises a driving device for driving the track 30 to walk and a speed reducer for realizing speed reduction, wherein the driving device and the speed reducer are arranged on the driving frame on one side of the supporting box body 10.

As shown in fig. 5, the support case 10 includes a cover plate 11, a base plate 12, and a plurality of lug plates 13, the plurality of lug plates 13 are respectively coupled between the cover plate 11 and the base plate 12, and the plurality of lug plates 13 are spaced apart along the length direction of the cover plate 11 and the base plate 12.

The ear plate 13 has one end connected to the cover plate 11 and the other end connected to the base plate 12. The ear plate 13 extends along the width direction of the cover plate 11 and the bottom plate 12, and the ear plate 13 can be used as a support plate between the cover plate 11 and the bottom plate 12, so that the stability of the whole structure of the support box 10 can be improved, and the strength of the whole structure can be improved.

The cover plate 11 includes at least two separate cover plates 111, and one side of the ear plate 13 away from the bottom plate 12 is connected between two adjacent separate cover plates 111, so that a connecting weld seam between the ear plate 13 and the cover plate 11 is located on one side of the cover plate 11 away from the bottom plate 12.

In the above embodiment, the cover plate 11 is a split structure, and the ear plate 13 is connected between two adjacent split cover plates 111, so that the connecting weld of the ear plate 13 and the cover plate 11 is located on one side of the cover plate 11 away from the bottom plate 12, which is convenient for operation outside the cover plate 11, improves the convenience of operation, effectively improves the welding efficiency, is also beneficial to improving the quality of weld, and improves the reliability of connection.

In the embodiment shown in fig. 5, the cover plate 11 is divided into three sections, the cover plate 11 includes three separate cover plates 111, two ear plates 13 are disposed between the cover plate 11 and the bottom plate 12, and one end of each ear plate 13 close to the cover plate 11 is located between two adjacent separate cover plates 111, so that welding can be performed above the cover plate 11.

The inventor also finds that, in the related art, as shown in fig. 2, a driving frame is arranged on the left side of the supporting box body, a wrapping plate 16a is wrapped on the periphery of the driving frame, the wrapping plate 16a is of a whole-piece structure, the shape is irregular, and the processing is time-consuming and material-consuming. Moreover, the wrapping plate 16a covers the whole width of the driving frame, and the welding seam of the wrapping plate 16a and the driving frame is positioned below the wrapping plate 16a, so that welding is difficult, the quality of the welding seam is difficult to ensure, and detection is difficult.

The inventor also provides improvement measures aiming at the problem of the plate wrapping.

As shown in fig. 5, in some embodiments, the support box 10 further includes an end plate 14, a driving frame 15, and a packing plate 16, the driving frame 15 is used for mounting the driving device, the end plate 14 is connected to the end portions of the cover plate 11 and the bottom plate 12, the driving frame 15 is mounted on the end plate 14, and the packing plate 16 is packed outside the driving frame 15.

In some embodiments, the support box 10 further includes two mounting plates 17 for mounting the speed reducer, the two mounting plates 17 are respectively disposed on two sides of the driving frame 15, a radial length of the mounting plates 17 is greater than a radial length of the driving frame 15, a groove is formed between a circumferential side surface of the driving frame 15 and the two mounting plates 17, and the wrapping plate 16 includes a first split wrapping plate 161 disposed inside the groove, so that a connection weld of the first split wrapping plate 161 and the mounting plates 17 is located outside the driving frame 15.

First components of a whole that can function independently package board 161 sets up in the inside of recess, and the bottom of the groove is not exceeded to the outside of first components of a whole that can function independently package board 161, can not cover mounting panel 17, consequently first components of a whole that can function independently package board 161 can be in the same place mounting panel 17 welding, and the welding seam can set up in the radial outside of carriage in addition, compares in the scheme of welding seam in the package board below, can improve the convenience of operation greatly, also is favorable to improving welded quality, improves the reliability of connecting.

In some embodiments, the wrapper 16 includes a first divided wrapper 161 and a second divided wrapper 162, the first divided wrapper 161 being wrapped around the periphery of the drive frame 15, and the second divided wrapper 162 being connected between the side of the first divided wrapper 161 and the end plate 14.

The wrapper sheet 16 also sets up to split type structure, and wrapper sheet 16 is including the first components of a whole that can function independently wrapper sheet 161 and the second components of a whole that can function independently wrapper sheet 162 of connection between the side of first components of a whole that can function independently wrapper sheet 161 of parcel carriage 15 between end plate 14, and the volume of every components of a whole that can function independently wrapper sheet all is less than the volume of whole piece formula wrapper sheet, and machining efficiency is higher, and the shape of components of a whole that can function independently wrapper sheet is more regular moreover, can avoid the waste of material.

The first divided body covering 161 is substantially C-shaped, and the second divided body covering 162 is substantially triangular.

As shown in fig. 4, during the research process, the inventor also finds that the bottom plate 12a of the track frame is inevitably deformed at the welding position due to a large bearing load and high use frequency at the position where the bogie wheel 20 is mounted, and the stress uniformity of the bogie wheel 20 is affected after the deformation. In order to maintain the uniform stress of the thrust wheel 20, the base plate 12a needs to be repaired after the welding position is deformed, and in the related art, the welding deformation is generally large, and a large-area welding repair or a whole surface processing is often required to be performed on the base plate 12. However, the output capacity of the track frame is greatly limited by large-area welding repair or whole surface processing, and the production efficiency is affected.

In order to solve the repair problem after welding deformation, the inventor improves the structure of the bottom plate 12.

As shown in fig. 6, in some embodiments, the base plate 12 includes a base plate body 121 and a plurality of attachment plates 122, the base plate body 121 is provided with a plurality of first mounting holes for mounting the thrust wheel 20, the attachment plates 122 are mounted on the base plate body 121 at positions where the first mounting holes are provided, and the attachment plates 122 are provided with second mounting holes 123 communicating with the first mounting holes, so that the thrust wheel 20 can be mounted on the base plate 12 through the second mounting holes 123 and the first mounting holes.

By providing the attachment plate 122, the structural strength of the base plate 12 can be enhanced, reducing the likelihood of deformation of the base plate 12. Moreover, the attachment plate 122 is only installed at the position where the first installation hole is formed, that is, only the thickness of the partial position of the bottom plate body 121 is increased, and the entire thickness of the bottom plate body 121 is not increased, so that the entire weight of the bottom plate 12 can be effectively reduced on the premise of having the same strength.

If take place to warp the back at thrust wheel 20 mounted position, can only change or repair flitch 122, need not weld the benefit by a large scale, more need not carry out whole face processing to bottom plate 12, greatly reduced repair's work load improves the repair effect, avoids influencing the normal work of track frame, influences production efficiency.

In some embodiments, the patch 122 is elongated. The long strip shape is convenient to process, and the position of the first mounting hole can be better covered, so that the structural strength is effectively improved.

In some embodiments, the support box 10 further comprises a plurality of first reinforcing plates 181, the plurality of first reinforcing plates 181 being connected between the side of the end plate 14 remote from the drive rack 15 and the cover plate 11 and between the side of the end plate 14 remote from the drive rack 15 and the bottom plate 12.

By providing the plurality of first reinforcing plates 181, the overall structural strength of the support case 10 can be improved. The plurality of first reinforcing plates 181 may be arranged at intervals in the vertical direction.

In some embodiments, the support box 10 further includes a second reinforcement panel 182, the second reinforcement panel 182 being connected to the plurality of first reinforcement panels 181 to form the reinforced box 18. Through setting up second reinforcing plate 182, be connected with a plurality of first reinforcing plate 181 and form and strengthen box 18, can further improve the fastness of structure, improve structural strength.

In some embodiments, the reinforcement cage 18 is provided with lightening holes 183. Thus, the overall weight of the support box 10 can be reduced, a lightweight design is realized, and energy is saved.

In some embodiments, the support housing 10 further comprises a squeeze block 19, the squeeze block 19 being mounted in a recess provided on the cover plate 11. The lugs 13 are connected to lugs on the frame and together with the squeeze blocks 19 transfer the load from the frame to the track frame and then to the ground.

According to the embodiment of the invention, the cover plate 11 of the crawler frame is subjected to segmented tailor welding, the welding seam formed by welding the cover plate 11 and the lug plate 13 is arranged above the cover plate 11 and positioned at the outer side of the crawler frame, and the key welding seam is turned from the inner side to the outer side, so that the welding seam quality, the welding accessibility, the welding quality and the welding efficiency can be effectively improved, and the operation safety is improved.

The wrapper sheet 16 of drive frame 15 department also carries out segmentation design, can improve material utilization, and the welding seam between the mounting panel 17 of wrapper sheet 16 and speed reducer also changes the outside simultaneously, can effectively reduce the welding degree of difficulty, reduces the welding volume, and the welding seam of being convenient for detects, improves welding efficiency and quality.

The local of bottom plate 12 is equipped with flitch 122, processes as required, reduces the soldering, reduces bottom plate work load, optimizes main material thickness, plays the track frame and improves the effect of matter reduction, promotion productivity.

The embodiment of the invention fundamentally designs the crawler frame, combines the process and equipment capabilities, improves the production process performance of the crawler frame, improves the overall productivity, improves the market competitiveness of products, reduces the welding and machining difficulty, changes the shape and the layout of plates, improves the material utilization rate, and can also reduce the manufacturing difficulty and the cost and improve the production efficiency.

Based on the crawler frame, the invention further provides a crawler crane, and the crawler crane comprises the crawler frame.

The positive technical effects of the crawler frame in the above embodiments are also applicable to the crawler crane, and are not described herein again.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.

Claims

1. A track frame, comprising a track (30) and a support box (10) for supporting the track (30), the support box (10) comprising:

a cover plate (11);

a base plate (12); and

a plurality of ear plates (13) respectively connected between the cover plate (11) and the bottom plate (12), and the plurality of ear plates (13) are arranged at intervals along the length direction of the cover plate (11) and the bottom plate (12);

the cover plate (11) comprises at least two split cover plates (111), one side, far away from the bottom plate (12), of each lug plate (13) is connected between the two adjacent split cover plates (111), so that a connecting welding seam between each lug plate (13) and the cover plate (11) is located on one side, far away from the bottom plate (12), of the cover plate (11).

2. The track frame according to claim 1, wherein the support box (10) further comprises an end plate (14), a driving frame (15) and a wrapper (16), the driving frame (15) is used for installing a driving device, the end plate (14) is connected to the end portions of the cover plate (11) and the bottom plate (12), the driving frame (15) is installed on the end plate (14), and the wrapper (16) is wrapped outside the driving frame (15).

3. The track frame according to claim 2, wherein the support box (10) further comprises two mounting plates (17) for mounting a speed reducer, the two mounting plates (17) are respectively arranged on two sides of the driving frame (15), the radial length of the mounting plate (17) is greater than that of the driving frame (15), a groove is formed between the circumferential side surface of the driving frame (15) and the two mounting plates (17), and the covering plate (16) comprises a first split covering plate (161) arranged inside the groove, so that a connecting weld of the first split covering plate (161) and the mounting plate (17) is positioned outside the driving frame (15).

4. The track frame according to claim 2 or 3, wherein the plate (16) comprises a first split plate (161) and a second split plate (162), the first split plate (161) being wrapped around the periphery of the drive frame (15), the second split plate (162) being connected between a side of the first split plate (161) and the end plate (14).

5. The track frame according to claim 1, wherein the support box (10) further comprises a plurality of attachment plates (122), the base plate (12) is provided with a plurality of first mounting holes for mounting the thrust wheels (20), the attachment plates (122) are mounted at the first mounting holes, and the attachment plates (122) are provided with second mounting holes (123) communicated with the first mounting holes.

6. The track frame according to claim 5, wherein the flitch plate (122) is elongated.

7. The track frame according to claim 2, wherein the support box (10) further comprises a plurality of first reinforcing plates (181), the plurality of first reinforcing plates (181) being connected between a side of the end plate (14) remote from the drive frame (15) and the cover plate (11) and between a side of the end plate (14) remote from the drive frame (15) and the base plate (12).

8. The track frame according to claim 7, wherein said support box (10) further comprises a second reinforcing plate (182), said second reinforcing plate (182) being connected to a plurality of said first reinforcing plates (181) to form a reinforcing box (18).

9. The track frame according to claim 8, wherein said reinforcement cage (18) is provided with lightening holes (183).

10. A crawler crane, comprising a crawler frame according to any one of claims 1 to 9.