Welding cage device of arm cylinder

Abstract

The utility model discloses a welding cage device of an arm cylinder, and belongs to the technical field of machine manufacturing. The device comprises a positioning base plate, a positioning lower die, a positioning upper die and an inner supporting plate, the positioning base plate is provided with a plurality of positioning lower dies used for fixing a lower bending plate of a workpiece, and each positioning lower die is connected with a positioning upper die used for fixing an upper bending plate of the workpiece; a plurality of inner supporting plates are arranged in an arm cylinder formed by the lower workpiece bent plate and the upper workpiece bent plate. According to the device, the positioning lower dies are inserted into the positioning holes of the positioning base plate through the positioning bosses, it is guaranteed that the multiple positioning lower dies are aligned in order, meanwhile, the positioning lower dies and the positioning upper dies jointly position the workpiece lower bent plate and the workpiece upper bent plate, and the multiple inner supporting plates are placed in an arm barrel formed by the positioning lower dies and the positioning upper dies; the problem that the arm cylinder is prone to deformation and distortion in the welding process is solved, and meanwhile the problem that the arm cylinder sinks or protrudes in the welding process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical manufacturing technical field, concretely is a kind of welding cage device of arm cylinder. BACKGROUND

[0002] With the development of economic society, modern construction means is constantly innovated, and overhead working truck, crane, long arm fork truck is important production equipment.

[0003] The arm support of overhead working truck, crane, long arm fork truck often adopts multistage box member telescoping, and the size and straightness of inner and outer telescopic arm members need to be strictly controlled;And in actual manufacture, due to various reasons, the size and straightness of inner and outer telescopic arm members have great difference with ideal state. When welding, the inaccuracy and non-uniformity of arm cylinder group size can easily lead to diamond deformation of arm cylinder, and further cause problems such as jamming and shaking of inner arm cylinder during telescoping.

[0004] In order to solve the above problems, the size needs to be corrected by disassembling the arm cylinder several times, which seriously affects the production efficiency. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of welding cage device of arm cylinder to solve the problems of easy deformation and easy distortion of arm cylinder when welding.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of welding cage device of arm cylinder, including positioning base plate, positioning lower die, positioning upper die and inner bracing plate;

[0008] A plurality of positioning lower dies for fixing workpiece lower bend plate are arranged on the positioning base plate, and each positioning lower die is connected with a positioning upper die for fixing workpiece upper bend plate;

[0009] A plurality of inner bracing plates are arranged in the arm cylinder formed by workpiece lower bend plate and workpiece upper bend plate.

[0010] Preferably, the positioning lower die is composed of lower die plate and lower connecting plate;

[0011] The lower connecting plate is connected with the positioning upper die at the connecting end of the lower die plate.

[0012] Preferably, the positioning upper die is composed of upper die plate and upper connecting plate;

[0013] The upper connecting plate is connected with the lower connecting plate at the connecting end of the upper die plate.

[0014] Preferably, the lower die plate is provided with lower positioning member at the connecting end, and the upper die plate is provided with upper positioning member at the connecting end.

[0015] The lower positioning member and the upper positioning member are matched.

[0016] Preferably, the connecting member is further included.

[0017] The lower connecting plate is provided with a lower connecting port, and the upper connecting plate is provided with an upper connecting port.

[0018] When the lower connecting plate is connected with the upper connecting plate, the lower connecting port is aligned with the upper connecting port, and the connecting member is arranged in the lower connecting port and the upper connecting port.

[0019] Preferably, the inner side shape of the lower die plate is the same as the outer side shape of the workpiece lower bending plate.

[0020] The inner side size of the lower die plate is the same as the outer side size of the workpiece lower bending plate.

[0021] Preferably, the inner side shape of the upper die plate is the same as the outer side shape of the workpiece upper bending plate.

[0022] The inner side size of the upper die plate is the same as the outer side size of the workpiece upper bending plate.

[0023] Preferably, the outer side shape of the inner support plate is the same as the inner side shape of the arm cylinder.

[0024] The outer side size of the inner support plate is the same as the inner side size of the arm cylinder.

[0025] Preferably, the positioning base plate is provided with a plurality of positioning holes.

[0026] The positioning holes are arranged in multiple rows and multiple columns.

[0027] Preferably, the bottom of the positioning lower die is provided with a positioning boss, and the positioning boss is inserted into the positioning hole.

[0028] The shape and size of the positioning boss are the same as those of the positioning hole.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] As described above, the utility model discloses a kind of arm cylinder welding cage device, and positioning boss is inserted into the positioning hole of positioning base plate by positioning boss, and it is guaranteed that multiple positioning lower die is in order and is aligned;Positioning lower die and positioning upper die fix workpiece lower bending plate and workpiece upper bending plate, and place multiple inner support plates in the arm cylinder formed by positioning lower die and positioning upper die, solve the problem that arm cylinder is deformed and twisted when welding, simultaneously also avoid the problem that arm cylinder is concave or convex when welding.

[0031] The utility model is provided with multiple rows and multiple columns of positioning on positioning base plate, can be applicable to different sizes of arm cylinder, and the common use of positioning base plate is achieved.

[0032] The utility model discloses still be provided with upper positioning piece on the connecting end of upper template, be provided with lower positioning piece on the connecting end of lower template, and upper positioning piece and lower positioning piece cooperate with each other, make the positioning upper mould and positioning lower mould better alignment, avoid the positioning upper mould and positioning lower mould misplacement, guarantee the size tolerance requirement and form tolerance requirement of workpiece lower bend plate and workpiece upper bend plate, improve the qualified rate of welding arm cylinder.

[0033] The positioning lower mould, the positioning upper mould and the inner support plate in the utility model are cut by a laser cutting machine, and are easy to manufacture and accurate in size. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below.

[0035] Figure 1 Structure diagram of the welding cage device of an arm cylinder in the embodiment Figure 1 ;

[0036] Figure 2 Structure diagram of the welding cage device of an arm cylinder in the embodiment Figure 2 ;

[0037] Figure 3 Partial structure diagram of the positioning base plate in the embodiment

[0038] Figure 4 Assembly relationship of the positioning lower mould, the positioning upper mould and the inner support plate in the embodiment Figure 1 ;

[0039] Figure 5 Structure diagram of the positioning lower mould in the embodiment

[0040] Figure 6 Structure diagram of the lower template in the embodiment

[0041] Figure 7 Structure diagram of the positioning upper mould in the embodiment

[0042] Figure 8 Structure diagram of the upper template in the embodiment

[0043] Figure 9 Assembly relationship of the positioning lower mould, the positioning upper mould and the inner support plate in the embodiment Figure 2 ;

[0044] Figure 10 It is Figure 9 The enlarged view of A in the embodiment

[0045] Figure 11 Structure diagram of the inner support plate in the embodiment

[0046] In the figure: 1, positioning base plate; 2, positioning lower die; 3, positioning upper die; 4, bolt; 5, nut; 6, inner support plate; 7, lower die plate; 8, lower connecting plate; 9, upper die plate; 10, upper connecting plate; 11, upper positioning member; 12, lower positioning member; 13, positioning boss; 14, positioning hole. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0048] Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0050] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0051] EMBODIMENT

[0052] As shown in Figure 1 and Figure 2 , the embodiment describes a welding cage device for arm cylinder. The device comprises a positioning base plate 1, a positioning lower die 2, a positioning upper die 3 and an inner support plate 6.

[0053] A plurality of positioning lower dies 2 for fixing the lower bent plate of the workpiece are arranged on the positioning base plate 1, and the spacing between the plurality of positioning lower dies 2 is 500mm to 600mm. Each positioning lower die 2 is connected with a positioning upper die 3 for fixing the upper bent plate of the workpiece.

[0054] A plurality of inner support plates 6 are arranged in the arm cylinder formed by the lower bent plate of the workpiece and the upper bent plate of the workpiece, and the inner support plates 6 can avoid the concave or convex of the arm cylinder during welding. The number of inner support plates 6, the number of positioning upper dies 3 and the number of positioning lower dies 2 are the same.

[0055] As shown in Figure 3 A plurality of positioning holes 14 are arranged on the positioning base plate 1. The positioning holes 14 are arranged in multiple rows and columns, and can be suitable for arm barrels of different sizes, so that the positioning base plate 1 can be shared. The shape of the positioning hole 14 is square, and the shape and size of the positioning hole 14 can be reasonably changed according to actual conditions.

[0056] As shown in Figure 5 and Figure 6 The positioning lower die 2 is composed of a lower die plate 7 and a lower connecting plate 8. The outer shape of the lower die plate 7 is U-shaped, the inner shape of the lower die plate 7 is the same as the outer shape of the workpiece lower bent plate, and the inner size of the lower die plate 7 is the same as the outer size of the workpiece lower bent plate.

[0057] A lower connecting plate 8 is arranged on the left and right connecting ends of the lower die plate 7 respectively, and two lower connecting openings are arranged on the lower connecting plate 8. The outer shape of the lower connecting plate 8 is H-shaped.

[0058] Two positioning bosses 13 are arranged on the bottom of the lower die plate 7, and the shape and size of the positioning boss 13 are the same as those of the positioning hole 14. When the positioning upper die 3 and the positioning lower die 2 are fixed, the positioning boss 13 is inserted into the positioning hole 14 of the positioning base plate 1. Through the cooperation of the positioning boss 13 and the positioning hole 14, not only the positioning lower die 2 can be fixed, but also multiple positioning lower dies 2 can be aligned in order, thereby ensuring the straightness of the arm barrel.

[0059] As shown in Figure 7 and Figure 8 The positioning upper die 3 is composed of an upper die plate 9 and an upper connecting plate 10. The outer shape of the upper die plate 9 is U-shaped, the inner shape of the upper die plate 9 is the same as the outer shape of the workpiece upper bent plate, and the inner size of the upper die plate 9 is the same as the outer size of the workpiece upper bent plate.

[0060] An upper connecting plate 10 is arranged on the left and right connecting ends of the upper die plate 9 respectively, and two upper connecting openings are arranged on the upper connecting plate 10. The outer shape of the upper connecting plate 10 is H-shaped.

[0061] As shown in Figure 4 , Figure 9 and Figure 10 When the workpiece lower bent plate and the workpiece upper bent plate are fixed, the two upper connecting plates 10 of the positioning upper die 3 are aligned with the two lower connecting plates 8 of the positioning lower die 2, the upper connecting openings are aligned with the lower connecting openings, and the fixing members are arranged in the upper connecting openings and the lower connecting openings, so as to fix the positioning upper die 3 and the positioning lower die 2. In this embodiment, the fixing members are bolts 4 and nuts 5, and the positioning upper die 3 and the positioning lower die 2 are fastened by the bolts 4 and the nuts 5.

[0062] A lower positioning member 12 is arranged at the left and right connecting ends of the lower die plate 7, and an upper positioning member 11 is arranged at the left and right connecting ends of the upper die plate 9. In this embodiment, the lower positioning member 12 is integrally formed with the lower die plate 7, and the upper positioning member 11 is integrally formed with the upper die plate 9.

[0063] When the positioning upper die 3 and the positioning lower die 2 are fixed, the lower positioning member 12 cooperates with the upper positioning member 11, which can prevent the positioning upper die 3 and the positioning lower die 2 from being misaligned, and further ensures the cross-sectional size of the arm cylinder and the straightness of the arm cylinder.

[0064] In this embodiment, the outer shape of the inner support plate 6 is the same as the inner shape of the arm cylinder, and the outer size of the inner support plate 6 is the same as the inner size of the arm cylinder.

[0065] In this embodiment, the installation process of the welding cage device of one arm cylinder is briefly described as follows:

[0066] (1) Place the positioning base plate 1 on the platform, and determine the number of the positioning lower dies 2 according to the length of the arm cylinder. Insert the positioning boss 13 at the bottom of the positioning lower die 2 into the positioning hole 14 of the positioning base plate 1, so that the positioning lower die 2 is tightly attached to the positioning base plate 1.

[0067] (2) Place the workpiece lower bending plate in the positioning lower die 2, and place the inner support plate 6 on the workpiece lower bending plate. The number of the inner support plates 6 is the same as the number of the positioning lower dies 2.

[0068] (3) Then, place the workpiece upper bending plate, and press the positioning upper die 3 above the workpiece upper bending plate. The number of the positioning upper dies 3 is the same as the number of the positioning lower dies 2.

[0069] (4) Fasten the positioning upper die 3 with the positioning lower die 2 by using the bolt 4 and the nut 5, and check whether the workpiece lower bending plate and the positioning lower die 2, the workpiece upper bending plate and the positioning upper die 3, and the workpiece upper and lower bending plates and the inner support plate 6 are tightly attached and have no gaps, so as to ensure that the local gap is not greater than 0.2 mm.

[0070] (5) Remove the positioning base plate 1, and weld the workpiece upper bending plate and the workpiece lower bending plate.

[0071] (6) After the welding is completed, loosen the bolt 4 and the nut 5, remove the positioning lower die 2 and the positioning upper die 3, and use a long rod to push the inner support plate 6 down and take out the inner support plate 6.

[0072] The positioning lower die 2, the positioning upper die 3 and the inner support plate 6 in this embodiment are cut by a laser cutting machine, which is easy to manufacture and accurate in size.

[0073] The embodiments of the utility model are only used for explaining the technical scheme of the utility model and are not limited, and for the ordinary skilled in the art, can understand that these embodiments can be changed, modified, replaced and changed in a plurality of ways without departing from the principles and spirits of the utility model, and the range of the utility model is defined by the appended claims and its equivalents.

Claims

1. A welding cage device for a boom, characterized in that: Includes a positioning base plate, a lower positioning mold, an upper positioning mold, and an inner support plate; The positioning base plate is provided with a plurality of positioning lower molds for fixing the lower bending plate of the workpiece, and each positioning lower mold is connected to a positioning upper mold for fixing the upper bending plate of the workpiece. Several internal support plates are installed in the arm cylinder formed by the lower bending plate and the upper bending plate of the workpiece.

2. The welding cage device for a boom cylinder according to claim 1, characterized in that: The positioning lower mold consists of a lower template and a lower connecting plate; The lower template is provided with a lower connecting plate at its connecting end, and the lower connecting plate is connected to and positioned above the upper template.

3. The welding cage device for a boom cylinder according to claim 2, characterized in that: The positioning upper mold consists of an upper template and an upper connecting plate; The upper template is provided with an upper connecting plate at its connecting end, and the upper connecting plate is connected to the lower connecting plate.

4. The welding cage device for a boom cylinder according to claim 3, characterized in that: The lower template is provided with a lower positioning component at its connecting end, and the upper template is provided with an upper positioning component at its connecting end. The lower positioning component and the upper positioning component are compatible.

5. The welding cage device for a boom cylinder according to claim 3, characterized in that: It also includes connectors; The lower connecting plate is provided with a lower connecting port, and the upper connecting plate is provided with an upper connecting port; When the lower connecting plate is connected to the upper connecting plate, the lower connecting port is aligned with the upper connecting port, and a connector is installed in the lower connecting port and the upper connecting port.

6. The welding cage device for a boom cylinder according to claim 2, characterized in that: The inner shape of the lower template is the same as the outer shape of the lower bending plate of the workpiece; The inner dimensions of the lower template are the same as the outer dimensions of the lower bending plate of the workpiece.

7. The welding cage device for a boom cylinder according to claim 3, characterized in that: The inner shape of the upper template is the same as the outer shape of the upper bending plate of the workpiece; The inner dimensions of the upper template are the same as the outer dimensions of the upper bending plate of the workpiece.

8. The welding cage device for a boom cylinder according to claim 1, characterized in that: The outer shape of the inner support plate is the same as the inner shape of the boom tube; The outer dimensions of the inner support plate are the same as the inner dimensions of the boom.

9. The welding cage device for a boom cylinder according to claim 1, characterized in that: The positioning base plate is provided with a plurality of positioning holes; The positioning holes are configured in multiple rows and columns.

10. The welding cage device for the boom cylinder according to claim 9, characterized in that: A positioning boss is provided at the bottom of the positioning lower mold, and the positioning boss is inserted into the positioning hole; The shape and size of the positioning boss are the same as the shape and size of the positioning hole.

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