CN208791061U - A kind of suspension arm of lorry-mounted crane cylinder - Google Patents

Abstract

The utility model discloses a kind of suspension arm of lorry-mounted crane cylinders, it is related to suspension arm of lorry-mounted crane field, including the identical upper frid of shape and lower frid, the boom cylinder passes through one piece of steel plate once cold rolling molding, one weld seam welding is made, the ratio between depth of section and width of the boom cylinder are 1.3-1.7, the arm board group that the upper frid is obliquely installed by web and two sides at, groove is set among the web, the part web length A of the groove two sides is set as 20-50mm, forming angle α between two end arms plate of the upper frid and lower frid is set as 120-150 °.The utility model uses one piece of cold-rolling of steel plate one-pass molding, only forms tube structure by a weld seam butt welding, and simple process is accurate, and automated procedures are high, and production cost is low.

Description

A kind of suspension arm of lorry-mounted crane cylinder

Technical field

The utility model relates to suspension arm of lorry-mounted crane field, specifically a kind of suspension arm of lorry-mounted crane cylinder.

Background technique

Boom is the important component of lorry-mounted crane, and the cross sectional shape of boom structure has compared with polymorphic type: rectangle, it is trapezoidal, fall Set trapezoidal, pentagon, hexagon, octagon, Rouno Cormer Pregrinding Wheel rectangle, elliptic cross-section etc..Currently, polygonal cross-section cylinder is by multiple Bending, multi-pass welding manufacture are completed.Cylinder frid need to position, bending, inspection in steel plate cold-working bending process through device programming Multiple tracks bending is completed in the process flows such as survey.The consistency and frid that guarantee frid all angles bending in bending process are in length The straightness of aspect.Cylinder frid butt welding, it is higher to size, position accuracy demand between each plate.It is easy in welding process There is the problems such as welding deformation, welding workload are big, weld job environment is poor.General cylinder web is higher, is answered by larger pressure , often there is local buckling's situation in power effect.

Summary of the invention

To solve above-mentioned technical problem, the utility model provides a kind of suspension arm of lorry-mounted crane cylinder, using one Block cold-rolling of steel plate one-pass molding only forms tube structure by a weld seam butt welding, and simple process is accurate, automated procedures Height, production cost are low.

The utility model solve its technical problem the technical solution adopted is that:

A kind of suspension arm of lorry-mounted crane cylinder, including the identical upper frid of shape and lower frid, the boom cylinder pass through One piece of steel plate once cold rolling molding, a weld seam welding are made, and the ratio between depth of section and width of the boom cylinder are 1.3- 1.7, the arm board group that the upper frid is obliquely installed by web and two sides is at setting groove, the groove two among the web The part web length A of side is set as 20-50mm, and the forming angle α between two end arms plate of the upper frid and lower frid is set as 120-150°。

The depth B of the groove is set as 5-10mm.

The utility model structure is simple, and the shape of frid up and down of entire cylinder is formed by the disposable cold rolling of one block of steel plate, Bending process greatly reduces, and compared to accurate size for multiple tracks bending technique, straightness is high, is formed using cold rolling, automates journey Sequence is high, and plate and unnecessary waste are saved in one-pass molding；Entire cylinder only needs a weld seam butt welding molding, reduces weldering Process and production energy consumption are connect, production efficiency is substantially increased, saving of work and time reduces production cost；Web uses groove structure, The stability of web is improved, stress condition is greatly improved.

Detailed description of the invention

Fig. 1 is the schematic cross-section of the utility model；

Fig. 2 is the molding structure schematic diagram of the utility model.

Specific embodiment

The utility model is described in detail in the following with reference to the drawings and specific embodiments:

As shown in Figure 1, a kind of suspension arm of lorry-mounted crane cylinder, including the identical upper frid 1 of shape and lower frid 2, it is described Boom cylinder is made up of one piece of steel plate once cold rolling molding, a weld seam welding, the depth of section and width of the boom cylinder The ratio between degree is 1.3-1.7, and the arm plate 12 that the upper frid 1 is obliquely installed by web 11 and two sides forms, among the web 11 Groove 111 is set, and the part web length A of 111 two sides of groove is set as 20-50mm, the upper frid 1 and lower frid 2 Forming angle α between two end arms plates 12 is set as 120-150 °.

The depth B of the groove 111 is set as 5-10mm.

In the present embodiment, entire boom cylinder using one block of steel plate by cold-rolling mill according to designed shape once at Type is formed eventually by 3 butt welding of weld seam, and section global shape is symmetrical, that is to say, that upper frid 1 is under The structure of frid 2 is completely the same.Specific size design are as follows: formed after upper frid 1 and the welding of the arm plate 12 at lower 2 both ends of frid Angle be set as 120-150 °, groove 111 is bent among web 11, the part web length A at both ends is set as 20- 50mm, the depth B of groove 111 are set as 5-10mm, and the ratio between depth of section H and width W of whole boom cylinder are 1.3-1.7.

Using the disposable cold rolling molding of monolith steel plate, process is accurate, and straightness is high, avoids multiple bending and causes The low situation of frid straightness.Both ends are docked after one piece of steel plate forming, only form a weld seam, are welded by this weld seam Entire boom cylinder can be formed, the increase of multiple welding energy consumption and the pollution of environment is avoided, greatly reduces work Amount, improves production efficiency, reduces production cost, and groove 111 is designed on web 11, solves web and accepts and pays no attention to The problem of.

To sum up, the utility model structure is simple, and processing technology is simple and fast, and production cost is low, and suitable large-scale promotion is answered With.

Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above, The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered Belong to the protection scope of the utility model.

Claims (2)

1. a kind of suspension arm of lorry-mounted crane cylinder, including the identical upper frid (1) of shape and lower frid (2), which is characterized in that institute Boom cylinder is stated to be made up of the molding of one piece of steel plate once cold rolling, a weld seam welding, the depth of section of the boom cylinder with The ratio between width is 1.3-1.7, and the arm plate (12) that the upper frid (1) is obliquely installed by web (11) and two sides forms, the abdomen Groove (111) are set among plate (11), the part web length A of groove (111) two sides is set as 20-50mm, it is described on Forming angle α between (2) two end arms plate (12) of frid (1) and lower frid is set as 120-150 °.

2. a kind of suspension arm of lorry-mounted crane cylinder according to claim 1, which is characterized in that the depth of the groove (111) Degree B is set as 5-10mm.