Rivet welding tool for rotary table base of overhead working truck

Abstract

The utility model relates to the technical field of welding, and discloses an overhead working truck rotary table base rivet welding tool which comprises a bottom plate used for positioning a mounting plate of a rotary table base, a center cylinder used for positioning the rotary table base and an indexing positioning plate used for positioning a plurality of rib plates. A plurality of positioning pins corresponding to the process holes in the mounting plate are arranged on the bottom plate; a plurality of fixing holes corresponding to the positioning pins are formed in the indexing positioning plate, a positioning hole used for positioning the center cylinder is formed in the middle of the indexing positioning plate, rib plate placing grooves with the same number as the rib plates are circularly arrayed in the positioning hole, and a positioning rib plate is arranged on the same side face of each rib plate placing groove; and the mounting plate and the indexing positioning plate are sequentially placed on the bottom plate, are positioned by the positioning pins and are fixed by the gaskets and the nuts. The flange plate welding device has the advantages of being easy to operate and high in welding quality, the installation plate, the center cylinder and the rib plate can be positioned and welded through the bottom plate and the indexing positioning plate, after welding is completed, the indexing positioning plate is taken down, and finally the flange plate is welded.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a riveting and welding fixture for a turntable base of an aerial work platform. Background Technology

[0002] The turntable base is an important component of the slewing structure of an aerial work platform vehicle. One such type is shown in the attached diagram. Figure 1 and attached Figure 2 The turntable shown is welded from mounting plate A, central cylinder B, several ribs C, and flange plate D. The welding process must meet the following requirements:

[0003] 1. The central axis of the central cylinder is coaxial with the axis of the central hole of the mounting plate;

[0004] 2. The ribs outside the central tube are evenly distributed, and the ribs are perpendicular to the central tube and the mounting plate;

[0005] 3. The flange plate is parallel to the mounting plate, and the centerline of the flange plate is coaxial with the centerline of the central cylinder.

[0006] Currently, the welding of turntable bases is mainly carried out on the tooling platform by manually marking and positioning, and then using multiple clamps for fixing and welding. This welding method is not only time-consuming and labor-intensive, but also has the problem of low positioning accuracy. It is difficult to guarantee the flatness of the mounting plate and flange plate, as well as the position of the two with respect to the center cylinder, and it is also impossible to guarantee the consistency of the product.

[0007] Based on this, this application provides a riveting and welding fixture for the turntable base of an aerial work platform to solve the above problems. Utility Model Content

[0008] The present invention aims to solve one of the technical problems existing in the prior art. To this end, the present invention provides a riveting and welding fixture for the turntable base of an aerial work platform.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] A riveting and welding fixture for a turntable base of an aerial work platform is provided, comprising a base plate for positioning a mounting plate of the turntable base and an indexing positioning plate for positioning a central cylinder and several ribs of the turntable base; the base plate is provided with a plurality of positioning pins corresponding to process holes on the mounting plate; the indexing positioning plate is provided with a plurality of fixing holes corresponding to the positioning pins, and a positioning hole for positioning the central cylinder is provided in the middle of the plate; the positioning hole has a circular row of rib placement slots equal to the number of ribs, and a positioning rib is provided on the same side of each rib placement slot; the mounting plate and the indexing positioning plate are placed on the base plate in sequence, positioned by the positioning pins, and fixed by washers and nuts.

[0011] In some optional embodiments, the bottom of the positioning rib is provided with a pin, the indexing positioning plate is provided with a socket, and the positioning rib and the indexing positioning plate are inserted and then welded.

[0012] In some alternative embodiments, the base plate is further provided with a plurality of adjusting bolts for adjusting the levelness of the base plate.

[0013] In some alternative embodiments, the positioning pin is detachably mounted on the base plate, and a limiting end plate is provided at its bottom. The positioning pin passes through the bottom of the base plate.

[0014] In some optional embodiments, a positioning assembly for positioning the flange plate of the turntable base is also included. The positioning assembly includes a positioning base plate fixed to the base plate and multiple positioning plates disposed on the positioning base plate. The multiple positioning plates are distributed in an arc shape on the positioning plate base with the central cylinder as the center, and the top of each positioning plate is provided with a positioning surface for positioning the outer edge of the flange plate.

[0015] In some optional embodiments, the positioning plate base is provided with a plurality of limiting holes corresponding to the positioning pins, which are fixed to the mounting plate by washers and nuts.

[0016] In some optional embodiments, the bottom of the positioning plate is provided with a pin, the positioning seat plate is provided with a socket, the positioning plate and the positioning seat plate are inserted and welded together, and stiffening plates are also welded between the two sides of the positioning plate and the positioning seat plate.

[0017] In some alternative embodiments, a quick-pull clamp for pressing the flange plate onto the positioning assembly is also included. The quick-pull clamp is fixed to the bracket and is located on opposite sides of the turntable base, separate from the positioning assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model uses a base plate to position the mounting plate of the turntable base, and uses an indexing positioning plate to position the central cylinder and ribs of the turntable base. After welding, the mounting plate, central cylinder and ribs are welded. After welding, the indexing positioning plate is removed, and finally the flange plate is welded.

[0020] 2. When welding flange plates, the position of the flange plate is determined by the positioning component, and then it is pressed tightly by the quick push-pull clamp to fix the flange plate, thus completing the welding of the flange plate;

[0021] 3. This utility model can complete the precise welding of the turntable base in steps, and has the advantages of simple operation and high welding quality, which can improve the production quality of products and ensure product consistency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0023] Figure 1 This is a top view of the turntable base;

[0024] Figure 2 This is a sectional view of the rotary table base;

[0025] Figure 3 This is the main view of the mounting plate, center cylinder, and ribs of the turntable base, showing their clamping and positioning.

[0026] Figure 4 This is a top view showing the clamping and positioning of the mounting plate, center cylinder, and ribs of the turntable base;

[0027] Figure 5 This is a structural diagram of the base plate;

[0028] Figure 6 This is a schematic diagram of the indexing and positioning plate.

[0029] Figure 7 This is a structural schematic diagram of the positioning stiffener;

[0030] Figure 8 This is the main view of the flange plate of the turntable base being clamped and positioned.

[0031] Figure 9 This is a top view of the flange plate of the turntable base being clamped and positioned.

[0032] Figure 10 This is a structural schematic diagram of the positioning base plate;

[0033] Figure 11 This is a structural diagram of the positioning plate;

[0034] Figure 12 This is a structural diagram of the stiffening plate.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1—Base plate, 1.1—Positioning pin, 1.2—Adjusting bolt, 2—Indexing positioning plate, 2.1—Fixing hole, 2.2—Positioning hole, 2.3—Rib plate placement groove, 2.4—Positioning rib plate, 3—Positioning assembly, 3.1—Positioning seat plate, 3.1.1—Positioning hole, 3.2—Positioning plate, 3.2.1—Positioning surface, 3.3—Rib plate, 4—Quick push-pull clamp, 5—Bracket, n—Pin, u—Socket, A—Base plate, A.1—Process hole, B—Center cylinder, C—Rib plate, D—Flange plate. Detailed Implementation

[0037] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0040] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] Example 1

[0042] This embodiment provides a riveting and welding fixture for a turntable base of an aerial work platform, solving the positioning and welding problems of the base plate A, central cylinder B, and rib plate C of the turntable base, as shown in the attached figure. Figure 2 To be continued Figure 7 As shown, the riveting and welding fixture includes a base plate 1 for positioning the rotating platform A and an indexing and positioning plate 2 for positioning the central cylinder B and several rib plates C of the rotating platform, wherein:

[0043] The base plate 1 is provided with a plurality of positioning pins 1.1 corresponding to the process holes A.1 on the mounting plate A. The mounting plate A is positioned by inserting the positioning pins 1.1 into the process holes A.1.

[0044] The indexing and positioning plate 2 is provided with a plurality of fixing holes 2.1 corresponding to the positioning pins 1.1, for fixing the indexing and positioning plate to the mounting plate. The middle part of the indexing and positioning plate 2 is provided with positioning holes 2.2 for positioning the center cylinder B. The positioning holes 2.2 are arranged in a circular pattern with the same number of rib plate C slots 2.3. Each rib plate C has a positioning rib plate 2.4 on the same side of each rib plate placement slot 2.3 for positioning the rib plate C.

[0045] In practice, the mounting plate is first placed on the base plate, and then the indexing positioning plate is placed on the mounting plate. The mounting plate and the indexing positioning plate are fixed to the positioning pins by washers and nuts. Then, the center cylinder is inserted into the positioning hole of the indexing positioning plate so that it contacts the mounting plate. Next, several ribs are placed into the rib placement slots of the indexing positioning plate one by one, so that each rib uses the positioning rib as a backing plate, while controlling the rib to contact the center cylinder. The ribs are then welded to the mounting plate and the center cylinder. After the mounting plate, the center cylinder and the ribs are welded, the nuts and washers are removed, the indexing positioning plate is removed, and finally the flange plate is welded.

[0046] In one embodiment, the bottom of the positioning rib plate 2.4 is provided with a pin n, and the indexing positioning plate 2 is provided with a socket u. The positioning rib plate 2.4 is inserted into the indexing positioning plate 2 and then welded. This design is beneficial to maintaining the perpendicularity between the positioning rib plate and the indexing positioning plate.

[0047] In one embodiment, the base plate 1 is further provided with a plurality of adjusting bolts 1.2, the adjusting bolts having threads that penetrate the base plate, and can be used to adjust the levelness of the base plate.

[0048] In one embodiment, the positioning pin 1.1 is detachably mounted on the base plate 1, and its bottom is provided with a limiting end plate. The positioning pin 1.1 penetrates the base plate from the bottom. This design allows for the positioning of process holes of different diameters by replacing different positioning pins.

[0049] Example 2

[0050] Based on Example 1, this example further designs the riveting and welding fixture to solve the positioning welding problem of flange plate D. (See attached...) Figure 8 To be continued Figure 12 As shown, the riveting and welding fixture also includes a positioning assembly 3 for positioning the flange plate D of the turntable base. The positioning assembly 3 includes a positioning base plate 3.1 fixed on the base plate 1 and multiple positioning plates 3.2 disposed on the positioning base plate 3.1. The multiple positioning plates 3.2 are arranged in an arc shape on the positioning plate 3.1 base with the central cylinder B as the center, and the top of each positioning plate 3.2 is provided with a positioning surface 3.2.1 for positioning the outer edge of the flange plate.

[0051] In one embodiment, the positioning plate base 3.1 is provided with a plurality of positioning holes 3.1.1 corresponding to the positioning pins 1.1, which are fixed to the mounting plate A by washers and nuts.

[0052] In one embodiment, the bottom of the positioning plate 3.2 is provided with a pin n, and the positioning base plate 3.1 is provided with a socket u. The positioning plate 3.2 and the positioning base plate 3.1 are inserted and then welded. This connection method is beneficial to maintaining the perpendicularity of the positioning plate and the positioning base plate. In addition, stiffening plates 3.3 are welded between the two sides of the positioning plate 3.2 and the positioning base plate 3.1 to enhance the connection strength between the two.

[0053] In practice, the limiting holes on the positioning base plate are aligned with the positioning pins, and the pins are fixed to the mounting plate with washers and nuts. At this time, the multiple positioning plates on the plate form an arc-shaped positioning surface that limits the flange plate. The flange plate is placed on the center cylinder, with one side close to the arc-shaped positioning surface. This completes the positioning of the flange plate. After the flange plate, center cylinder and rib plate are welded together, the nuts and washers are removed, and the positioning assembly is removed.

[0054] Example 3

[0055] Based on Example 2, as shown in the appendix Figure 8 and attached Figure 9 As shown, this embodiment further includes a quick-pull clamp 4 for pressing the flange plate D onto the positioning assembly 3. After the flange plate is positioned, it is fixed by the quick-pull clamp to prevent displacement of the flange plate during the welding process. Specifically, the quick-pull clamp 4 is fixed on the bracket 5, and it and the positioning assembly 3 are located on opposite sides of the turntable base.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A riveting and welding fixture for a turntable base of an aerial work platform, characterized in that: Includes a base plate for mounting the rotary table and an indexing and positioning plate for positioning the rotary table, and several ribs. The base plate is provided with a plurality of positioning pins corresponding to the process holes on the mounting plate; The indexing and positioning plate is provided with a plurality of fixing holes corresponding to the positioning pins, and a positioning hole for positioning the central cylinder is provided in the middle. The positioning hole is provided with a circular row of rib plate placement slots, the same number as the rib plates. A positioning rib is provided on the same side of each rib plate placement slot. The mounting plate and indexing positioning plate are placed sequentially on the base plate, positioned by positioning pins, and fixed by washers and nuts.

2. The riveting and welding fixture for the turntable base of the aerial work platform according to claim 1, characterized in that: The bottom of the positioning rib plate is provided with a foot, and the indexing positioning plate is provided with a slot. The positioning rib plate and the indexing positioning plate are inserted and then welded together.

3. The riveting and welding fixture for the turntable base of the aerial work platform according to claim 1, characterized in that: The base plate is also equipped with multiple adjusting bolts for adjusting the levelness of the base plate.

4. The riveting and welding fixture for the turntable base of the aerial work platform according to claim 3, characterized in that: The positioning pin is detachably installed on the base plate, and a limiting end plate is provided at its bottom. The positioning pin passes through the bottom of the base plate.

5. The riveting and welding fixture for the turntable base of the aerial work platform according to any one of claims 1 to 4, characterized in that: It also includes a positioning assembly for positioning the flange plate of the turntable base. The positioning assembly includes a positioning base plate fixed to the base plate and multiple positioning plates disposed on the positioning base plate. The multiple positioning plates are distributed in an arc shape on the positioning plate base with the central cylinder as the center, and the top of each positioning plate is provided with a positioning surface for positioning the outer edge of the flange plate.

6. The riveting and welding fixture for the turntable base of the aerial work platform according to claim 5, characterized in that: The positioning plate base is provided with multiple limiting holes corresponding to the positioning pins, which are fixed to the mounting plate by washers and nuts.

7. The riveting and welding fixture for the turntable base of the aerial work platform according to claim 5, characterized in that: The bottom of the positioning plate is provided with a pin, and the positioning base plate is provided with a socket. The positioning plate and the positioning base plate are inserted and then welded together. Ribs are also welded between the two sides of the positioning plate and the positioning base plate.

8. The riveting and welding fixture for the turntable base of the aerial work platform according to claim 5, characterized in that: It also includes a quick-pull clamp for pressing the flange plate onto the positioning assembly, the quick-pull clamp being fixed on the bracket and located on opposite sides of the turntable base from the positioning assembly.

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