Tailor-welding tool for manufacturing middle rotating pin box structure of double-box lifting appliance

Abstract

The utility model discloses a tailor-welding tool for manufacturing a middle rotating pin box structure of a double-box lifting appliance. The tailor-welding tool comprises a jig frame, a side sliding block positioning seat, a lifting oil cylinder support positioning shaft, a pressing block, a rear sliding block positioning seat, a lifting pin hole positioning shaft and a rotating pin hole positioning shaft, wherein the side sliding block positioning seat, the lifting oil cylinder support positioning shaft, the pressing block, the rear sliding block positioning seat, the lifting pin hole positioning shaft and the rotating pin hole positioning shaft are arranged on the jig frame. The two side sliding block positioning seats are arranged up and down and are close to one side of the jig frame; the lifting pin hole positioning shaft and the rotating pin hole positioning shaft are arranged close to the bottom of the other side of the jig frame; the two pressing blocks are arranged up and down, are close to the other side of the jig frame and are positioned on the outer sides of the lifting pin hole positioning shaft and the rotating pin hole positioning shaft; the lifting oil cylinder support positioning shaft and the rear sliding block positioning seat are close to the bottom of the other side of the jig frame and located above the lifting pin hole positioning shaft and the rotating pin hole positioning shaft. According to the movable frame structure, all machined and formed parts can be rapidly positioned and formed in a tailor-welded mode at a time, all key sizes of the movable frame structure can be guaranteed, and follow-up assembly of the middle rotating pin box is not affected.

Description

Technical Field

[0001] The utility model relates to the manufacturing field of the middle pin box structure of a double-container spreader, and more specifically, to a welding fixture for preparing the middle pin box structure of a double-container spreader. Background Art

[0002] When a double-container spreader lifts two 20-foot containers, the middle pin box structure is an important lifting point position. With the continuous increase in the freight throughput of the terminal, the quality of the double-container spreader is more strictly tested. The middle pin box structure is one of the important components of the middle lifting point of the double-container spreader. High-efficiency manufacturing and high-quality assurance are both indispensable.

[0003] The traditional middle pin box structure mainly locates key positions through cold working operations and overall machining on a machine tool. In cold working operations, operators mark and position on-site according to dimensional requirements, while overall machining on a machine tool accurately positions through machining holes or planes of the machine tool. For the above two methods, cold working operations have high requirements for operators and large errors, which affect the subsequent assembly and use of the double-container spreader; while overall machining on a machine tool increases the manufacturing cost. Summary of the Utility Model

[0004] Aiming at the defects existing in the prior art, the purpose of the utility model is to provide a welding fixture for preparing the middle pin box structure of a double-container spreader, which can quickly position and weld all the processed and formed parts at one time, has high cold working efficiency, and can ensure all key dimensions of the moving frame structure without affecting the subsequent assembly of the middle pin box.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A welding fixture for preparing the middle pin box structure of a double-container spreader includes a jig and side slider positioning seats, lifting oil cylinder support positioning shafts, pressing blocks, rear slider positioning seats, top pin hole positioning shafts and pin hole positioning shafts arranged on the jig;

[0007] There are two side slider positioning seats, which are arranged vertically and are both arranged near one side of the jig;

[0008] The top pin hole positioning shaft and the pin hole positioning shaft are both arranged near the bottom of the other side of the jig;

[0009] There are two pressing blocks, which are arranged vertically and are both arranged near the other side of the jig and outside the top pin hole positioning shaft and the pin hole positioning shaft;

[0010] The lifting oil cylinder support positioning shaft and the rear slider positioning seat are both arranged near the bottom of the other side of the jig and above the top pin hole positioning shaft and the pin hole positioning shaft.

[0011] Preferably, the jig includes a chassis, a first bracket, a second bracket and a mounting platform;

[0012] A plurality of legs are provided at the bottom of the chassis;

[0013] The first bracket is provided at the top of the chassis and is disposed close to one side of the chassis;

[0014] The mounting platform is provided at the side of the chassis and is disposed close to the other side of the chassis;

[0015] The second bracket is provided at the top of the chassis and is disposed close to the other side of the chassis.

[0016] Preferably, the side slider positioning seat is positioned on the first bracket through a keyway;

[0017] An inner arc notch is formed on the side slider positioning seat.

[0018] Preferably, the opening direction of the inner arc notch on the side slider positioning seat faces upward.

[0019] Preferably, the top pin hole positioning shaft and the rotating pin hole positioning shaft are both inserted on the mounting platform;

[0020] The central axes of the top pin hole positioning shaft and the rotating pin hole positioning shaft are perpendicular to the ground plane.

[0021] Preferably, the outer diameter of the top pin hole positioning shaft is set to a stepped structure;

[0022] The outer diameter of the upper end of the top pin hole positioning shaft is smaller than the outer diameter of the lower end of the top pin hole positioning shaft.

[0023] Preferably, a raised step is provided at a position close to the middle section on the rotating pin hole positioning shaft.

[0024] Preferably, the pressing block is provided on the second bracket.

[0025] Preferably, the lifting oil cylinder support positioning shaft and the rear slider positioning seat are both provided on the second bracket;

[0026] The lifting oil cylinder support positioning shaft is located outside the rear slider positioning seat.

[0027] Preferably, the rear slider positioning seat includes a pair of parallel L-shaped structures;

[0028] An inner arc notch with an upward opening direction is formed on the L-shaped structure;

[0029] A pressing component is provided on the L-shaped structure.

[0030] The welding and assembly tool for the intermediate rotating pin box structure of a double-box lifting tool provided by the present utility model can effectively inspect the machining dimensions of each part. If there are dimensional errors in the machining of the parts, the positioning components cannot accurately position each part on the front sealing plate structure. With the positioning of the welding and assembly tool of the present utility model, the positioning efficiency is high, the welding deformation is controlled to a certain extent, and the influence on subsequent assembly is prevented. Brief Description of the Drawings

[0031] Figure 1 is a schematic three-dimensional structure diagram of the welding and assembly tool of the present utility model;

[0032] Figure 2 is a schematic structural diagram of the top pin hole positioning shaft in the welding and assembly tool of the present utility model;

[0033] Figure 3 is a schematic structural diagram of the rotating pin hole positioning shaft in the welding and assembly tool of the present utility model;

[0034] Figure 4 is a schematic structural diagram of the rear slider positioning seat in the welding and assembly tool of the present utility model. Detailed Description of the Embodiment

[0035] In order to better understand the above technical solutions of the present utility model, the technical solutions of the present utility model will be further described below with reference to the drawings and embodiments.

[0036] Combined with Figure 1 As shown, the welding and assembly tool for the intermediate rotating pin box structure of a double-box lifting tool provided by the present utility model includes a jig 1 and a side slider positioning seat 2, a lifting oil cylinder support positioning shaft 3, a pressing block 4, a rear slider positioning seat 5, a top pin hole positioning shaft 6, and a rotating pin hole positioning shaft 7 provided on the jig 1.

[0037] There are two side slider positioning seats 2, which are arranged up and down, and are both arranged near one side of the jig 1 (such as Figure 1 on the right side of the jig 1).

[0038] The top pin hole positioning shaft 6 and the rotating pin hole positioning shaft 7 are both arranged near the bottom of the other side of the jig 1 (such as Figure 1 at the bottom left side of the jig 1).

[0039] There are two pressing blocks 4, which are arranged up and down, and are both arranged near the other side of the jig 1 and are located outside the top pin hole positioning shaft 6 and the rotating pin hole positioning shaft 7 (such as Figure 1 on the left side of the jig 1).

[0040] The lifting oil cylinder support positioning shaft 3 and the rear slider positioning seat 5 are both arranged near the bottom of the other side of the jig 1 and are located above the top pin hole positioning shaft 6 and the rotating pin hole positioning shaft 7 (such as Figure 1on the left side of the jig 1

[0041] The jig 1 is the main structure of the welding fixture of the present utility model, including a chassis 11, a first bracket 12, a second bracket 13 and a mounting platform 14.

[0042] Four legs 15 are provided at the bottom of the chassis 11.

[0043] The first bracket 12 is installed on the top of the chassis 11 and is arranged at a position close to one side of the chassis 11.

[0044] The mounting platform 14 is installed on the side of the chassis 11 and is arranged at a position close to the other side of the chassis 11.

[0045] The second bracket 13 is installed on the top of the chassis 11 and is arranged at a position close to the other side of the chassis 11.

[0046] Positioning key grooves for installing various components are provided on the chassis 11, the first bracket 12, the second bracket 13 and the mounting platform 14.

[0047] The jig 1 is machined and positioned by the machine tool in an integral machining method, reducing the error of the overall structure and ensuring the precision dimensions when the welding fixture of the present utility model is used.

[0048] The side slider positioning seat 2 is connected to the corresponding position on the first bracket 12 through a key groove.

[0049] An inner arc notch with an upward opening direction is provided on the side slider positioning seat 2.

[0050] The top pin hole positioning shaft 6 and the rotating pin hole positioning shaft 7 are both inserted into the mounting platform 14, and the central axes of the top pin hole positioning shaft 6 and the rotating pin hole positioning shaft 7 are perpendicular to the ground plane.

[0051] Combined Figure 2 As shown, the outer diameter of the top pin hole positioning shaft 6 is set as a stepped structure, that is, the top pin hole positioning shaft 6 is divided into 4 segments from top to bottom, and the outer diameter of the uppermost segment of the top pin hole positioning shaft 6 is the smallest, and the outer diameter gradually increases downward.

[0052] Combined Figure 3 As shown, a raised step 71 is provided at a position close to the middle section on the rotating pin hole positioning shaft 7.

[0053] The pressing block 4 is connected to the corresponding position on the second bracket 12 through a key groove.

[0054] The lifting oil cylinder support positioning shaft 3 and the rear slider positioning seat 5 are both connected to the corresponding positions on the second bracket 12 through key grooves.

[0055] The lifting oil cylinder support positioning shaft 3 is located outside the rear slider positioning seat 5, and the lifting oil cylinder support positioning shaft 3 is parallel to the bottom plane of the mounting platform 14.

[0056] Combined Figure 4 As shown, the rear slider positioning seat 5 includes a pair of L-shaped structures 51 arranged in parallel.

[0057] An inner arc groove 52 with an upward opening direction is formed on the L-shaped structure 51. A pressing component is also provided on the L-shaped structure 51. After the protruding round platform on the intermediate rotating pin box structure is placed into the inner arc groove 52 of the rear slider positioning seat 5, the pressing component can be used to ensure that the longitudinal position of the L-shaped structure 51 is parallel and can fix the parts for welding to prevent problems such as shrinkage deformation.

[0058] When the welding fixture of the present utility model is actually used: First, the key parts of the intermediate rotating pin box are processed to ensure the dimensions and accuracy of the parts; then, through the various positioning components on the jig 1, such as the side slider positioning seat 2, the rear slider positioning seat 5, the lifting oil cylinder support positioning shaft 3, etc., the various positioning holes, grooves or planes on the jig 1 are machined by the machine tool to ensure the dimensional accuracy. When positioning the various parts of the intermediate rotating pin box, the accurate position dimensions can be ensured. The welding fixture of the present experimental new type not only directly replaces the cold working operation through the positioning components and the fixing components, but also can further inspect the conformity of the key dimensions of each component, improving the manufacturing quality of the middle rotating pin structure.

[0059] Embodiment

[0060] Reference Figure 1 , this embodiment provides a welding fixture for preparing the intermediate rotating pin box structure of a double-box lifting tool, including a jig 1 and a side slider positioning seat 2, a lifting oil cylinder support positioning shaft 3, a pressing block 4, a rear slider positioning seat 5, a top pin hole positioning shaft 6 and a rotating pin hole positioning shaft 7 arranged on the jig 1.

[0061] Reference Figure 2 , the outer diameter of the top pin hole positioning shaft 6 is in a stepped form. When positioning, it ensures that the holes of the two parts, namely the part bottom plate and the reinforcing plate, in the intermediate rotating pin box structure are concentric.

[0062] Reference Figure 3 , a raised step 71 is provided on the rotating pin hole positioning shaft 7, and its function is to ensure that the waist-shaped hole on the bottom plate and the round hole on the reinforcing plate in the intermediate rotating pin box structure are concentric.

[0063] In this embodiment, the main structure (front sealing plate) of the intermediate rotating pin box structure is placed on the jig 1, and the bottom plane of the intermediate rotating pin box structure is in full contact with the bottom plane of the jig 1 to control the height position of the intermediate rotating pin box structure in the jig 1; two pressing blocks 4 are used to control the left and right vertical screen positions of the intermediate rotating pin box structure including the parts and fix the position of the intermediate rotating pin box on the jig 1.

[0064] The dowel pin hole positioning shaft 6 and the rotating pin hole positioning shaft 7 are centered on the hole center to position the rotating pin hole and the dowel pin hole of the intermediate rotating pin box structure.

[0065] The side slider positioning seat 2 is divided into two upper and lower parts, and there is a fixed positional relationship between the two parts. The upper and lower side slider positioning seats 2 are positioned on the jig 1 using key grooves; when welding the side slider positioning seat 2 together, the inner arc notch of the side slider positioning seat 2 is used as the basis to position the side slider positioning seat 2.

[0066] The positioning method of the rear slider positioning seat 5 is basically the same as that of the side slider positioning seat 2, but the rear slider positioning seat 5 is set as a double L-shaped structure. Refer to Figure 4 , and the parallel position must be ensured during the positioning of the double L-shaped structure. There is a pressing component on the rear slider positioning seat 5. After placing the protruding round table on the double L-shaped structure into the inner arc notch of the rear slider positioning seat 5, the pressing component can be used to ensure the parallel longitudinal position of the double L-shaped structure and can fix the parts for welding to prevent problems such as shrinkage deformation.

[0067] Through this embodiment, a welding fixture for preparing the intermediate rotating pin box structure of a double-box lifting tool is provided, which can effectively inspect the processing dimensions of each part. If there are dimensional errors in the part processing, the positioning components on the side cannot accurately position each part on the front sealing plate structure. Through this embodiment, a welding fixture for preparing the intermediate rotating pin box structure of a double-box lifting tool is provided, with high positioning efficiency, which controls the welding deformation to a certain extent and prevents the impact on subsequent assembly.

[0068] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present invention and are not used to limit the present invention. As long as it is within the scope of the substantial spirit of the present invention, the changes and modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A welding fixture for fabricating the intermediate swivel pin box structure of a double-box spreader, characterized in that: It includes a jig, a side slider positioning seat, a lifting oil cylinder support positioning shaft, a pressing block, a rear slider positioning seat, a top pin hole positioning shaft, and a rotating pin hole positioning shaft provided on the jig; There are two side slider positioning seats, arranged vertically, and both are provided near one side of the jig; The top pin hole positioning shaft and the rotating pin hole positioning shaft are both provided near the bottom of the other side of the jig; There are two pressing blocks, arranged vertically, and both are provided near the other side of the jig and outside the top pin hole positioning shaft and the rotating pin hole positioning shaft; The lifting oil cylinder support positioning shaft and the rear slider positioning seat are both provided near the bottom of the other side of the jig and above the top pin hole positioning shaft and the rotating pin hole positioning shaft; 2. The welding fixture for preparing the welded structure of the intermediate pin box of the double-box spreader, as claimed in claim 1, wherein: The jig includes a base frame, a first support, a second support, and an installation platform; There are multiple legs at the bottom of the base frame; The first support is provided on the top of the base frame and near one side of the base frame; The installation platform is provided on the side of the base frame and near the other side of the base frame; The second support is provided on the top of the base frame and near the other side of the base frame; 3. The welding fixture for fabricating the intermediate pivot box structure of the double-box spreader, as claimed in claim 2, wherein: The side slider positioning seat is positioned on the first support through a keyway; An inner arc notch is provided on the side slider positioning seat; 4. The welding fixture for preparing the intermediate pin box structure of the double-box sling, according to claim 3, wherein: The opening direction of the inner arc notch on the side slider positioning seat faces upward; 5. The welding fixture for fabricating the intermediate pivot box structure of a double-box spreader according to claim 2, characterized in that: The top pin hole positioning shaft and the rotating pin hole positioning shaft are both inserted into the installation platform; The central axes of the top pin hole positioning shaft and the rotating pin hole positioning shaft are perpendicular to the ground plane; 6. The welding jig for preparing the welded structure of the intermediate swivel pin box of the double-box sling, as claimed in claim 5, wherein: The outer diameter of the top pin hole positioning shaft is set as a stepped structure; The outer diameter of the upper end of the top pin hole positioning shaft is smaller than the outer diameter of the lower end of the top pin hole positioning shaft; 7. The welding fixture for fabricating the intermediate pin box structure of the double-box sling, as claimed in claim 5, wherein: A raised step is provided near the middle position of the rotating pin hole positioning shaft; 8. The welding jig for preparing the welded structure of the intermediate pin box of the double-box sling, according to claim 2, characterized in that: The pressing block is provided on the second support; 9. The welding jig for preparing the welded structure of the intermediate pin box of the double-box spreader, as claimed in claim 2, wherein: The lifting oil cylinder support positioning shaft and the rear slider positioning seat are both provided on the second support; The lifting oil cylinder support positioning shaft is located outside the rear slider positioning seat; 10. The welding fixture for preparing the intermediate rotating pin box structure of the double-box sling, as claimed in claim 9, is characterized in that: The rear slider positioning seat includes a pair of parallel L-shaped structures; An inner arc notch with an upward opening direction is provided on the L-shaped structure; A pressing component is equipped on the L-shaped structure.

Images