Overall tailor-welding tool for outer portal of fork lift truck

Abstract

The invention relates to the technical field of tailor-welding tools, and particularly discloses an integral tailor-welding tool for an outer portal of a fork lift truck, which comprises a supporting mechanism and a positioning mechanism, the supporting mechanism comprises a tailor-welding platform, and the tailor-welding platform is provided with a supporting top plate located at the top of the tailor-welding platform and a supporting end plate located at the end of the tailor-welding platform; the positioning mechanism comprises a first positioning assembly and a second positioning assembly which are arranged in the length direction of the supporting top plate at an adjustable interval, are used for clamping and fixing the frame body and are adaptive to the frame bodies with different heights; the third positioning assembly is integrated on the second positioning assembly and fixes the upper cross beam through a supporting seat and a positioning pin; the fourth positioning assembly is integrated on the second positioning assembly and fixes the middle cross beam through a limiting seat and a clamping air cylinder; the fifth positioning assembly is arranged in the width direction of the supporting end plate at an adjustable interval, and the vehicle legs are fixed through a limiting seat, a clamping air cylinder and a rotary pressing arm to adapt to different vehicle leg intervals; positioning and welding of all parts such as vehicle legs, cross beams and electric appliance boxes are completed through a single tool, tool replacement is reduced, and efficiency and precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of tailor-made welding fixtures, in particular to an integral tailor-made welding fixture for a forklift outer door frame. Background Art

[0002] The outer mast is an important component of the forklift. The outer mast includes a frame, legs, an upper crossbeam, a middle crossbeam, an electrical box and multiple ledges. The welding and forming process of the outer mast generally includes the following welding steps: 1. Weld the legs to the frame; 2. Weld the upper crossbeam and the middle crossbeam to the frame; 3. Weld the upper crossbeam and the middle crossbeam to the frame; 4. Weld the electrical box to the frame; 5. Weld the ledge to the frame; In the above steps, due to the interference between some positioning structures, a welding tool needs to be replaced for each welding step, but frequent replacement of welding tools for the same component will lead to cumbersome operation, low component forming efficiency, and easy positioning errors, which greatly increases costs. Summary of the Invention

[0003] The present invention is made in consideration of the above-mentioned problems. The purpose of the invention is to provide an integral welding fixture for the outer door frame of a forklift truck, which can complete the welding and positioning of multiple components of the outer door frame on one welding fixture. It has a high degree of automation and is easy to operate. It can greatly improve the forming efficiency of the outer door frame, and is applicable to products of different specifications and has strong versatility.

[0004] To achieve the above-mentioned object, the present invention provides a tool for integrally welding the outer mast of a stacker truck, wherein the outer mast comprises a frame, legs, an upper crossbeam, a middle crossbeam, and an electrical box. The tool is used to weld the legs, the upper crossbeam, the middle crossbeam, and the electrical box to the frame, and the tool comprises:

[0005] The support mechanism includes a tailor-welded platform, on which a support top plate arranged in a horizontal direction and a support end plate arranged in a vertical direction are provided;

[0006] The positioning mechanism includes a first positioning assembly and a second positioning assembly for fixing the frame to the support top plate, a third positioning assembly for fixing the upper crossbeam to the frame, a fourth positioning assembly for fixing the middle crossbeam to the frame, and two fifth positioning assemblies for fixing the two legs to the frame; wherein,

[0007] The first positioning assembly and the second positioning assembly are arranged at intervals on the top of the supporting top plate along the length direction of the supporting top plate, and the second positioning assembly can move toward or away from the side of the first positioning assembly to adapt to the frames of different heights, and the third positioning assembly and the fourth positioning assembly are both integrated on the second positioning assembly;

[0008] The two fifth positioning assemblies are spaced apart on both sides of the support end plate along the width direction of the support end plate, and the two fifth positioning assemblies can move along one side close to or away from each other to be suitable for two vehicle legs with different spacings.

[0009] According to the above-mentioned integral welding tooling of the outer door frame of a forklift, the frame includes two vertical beams, the two legs are installed at the bottom ends of the two vertical beams, the upper cross beam is installed between the top ends of the two vertical beams, the middle cross beam is installed between the middle parts of the two vertical beams, and the electrical box is installed on the top of the bottom ends of the two vertical beams.

[0010] According to the above-mentioned integral welding tooling of the outer mast of a forklift, the first positioning assembly includes a first clamping cylinder and a first lining cylinder, at least two of the first clamping cylinders are symmetrically arranged on both sides of the support top plate close to one end of the support end plate, and the first lining cylinder is located between the two vertical beams and is used to cooperate with the first clamping cylinder to clamp the two vertical beams.

[0011] According to the above-mentioned tooling for integrally welding the outer mast of a stacker, the first positioning assembly further includes a pressure claw and a first pressing cylinder corresponding to the pressure claw, the two pressure claws being rotatably arranged on both sides of the supporting top plate symmetrically, and the first pressing cylinder being used to provide power for the rotation of the pressure claw;

[0012] The pressing claw has a first pressing position and a second pressing position. When the pressing claw is located at the first pressing position, the pressing claw can abut against the top of the vertical beam. When the pressing claw is located at the second pressing position, the two pressing claws respectively abut against the two outer sides of the electrical box to clamp the electrical box.

[0013] According to the above-mentioned integral welding fixture of the outer door frame of a forklift, the second positioning assembly includes a mounting base, a first limit seat and a second liner cylinder located on the mounting base, the support top plate is provided with two first guide rails arranged along its length direction and a first positioning block located on the outside of the first guide rail, the first positioning block is provided with a plurality of first positioning screw holes arranged along the length direction of the support top plate, the two ends of the mounting base are slidably connected to the corresponding first guide rails through a slider, and the two ends of the mounting base are provided with a first positioning bolt, and the first positioning bolt can be inserted into any of the first positioning screw holes;

[0014] The two first limit seats are respectively located at the two ends of the mounting base, the top ends of the two vertical beams are located on the mounting base and between the two first limit seats, and the second lining cylinder is located between the two vertical beams and is used to drive the top ends of the two vertical beams to abut against the two first limit seats respectively.

[0015] According to the above-mentioned integral welding tooling of the outer door frame of a forklift, the third positioning assembly includes a support seat and a positioning pin. The two support seats are arranged on the mounting base along the length direction of the mounting base and are used to provide support for the upper crossbeam. The two ends of the upper crossbeam can be respectively attached to the outer side of the top ends of the two vertical beams, and a first positioning hole is provided at both ends of the upper crossbeam, and a second positioning hole is provided on the outer side of the vertical beam. The positioning pin can be inserted into the connecting hole between the first positioning hole and the second positioning hole.

[0016] According to the above-mentioned integral welding tooling for the outer mast of a forklift, the fourth positioning assembly includes a second limit seat and a second clamping cylinder fixed on the mounting base plate, the second limit seat and the second clamping cylinder are respectively located on both sides of the middle cross beam, and the second clamping cylinder is used to drive the middle cross beam to abut against the second limit seat to clamp the middle cross beam.

[0017] According to the above-mentioned integral welding fixture of the outer door frame of a stacker, the fifth positioning assembly includes a mounting vertical plate and a third limiting seat, a third clamping cylinder, a first pressure arm and a rotating cylinder located on the mounting vertical plate. The upper and lower ends of the support end plate are provided with second guide rails arranged in the horizontal direction. The upper and lower ends of the mounting vertical plate are slidably connected to the two second guide rails through sliders. The third limiting seat and the third clamping cylinder are respectively located on both sides of the vehicle leg. The first pressure arm is fixed to one side of the vehicle leg through the rotating cylinder and can abut against the outer side of the vehicle leg.

[0018] The support end plate is further provided with a second positioning block, the second positioning block is provided with a plurality of second positioning screw holes arranged in a horizontal direction, the mounting vertical plate is provided with a second positioning bolt, and the second positioning bolt can be inserted into any of the second positioning screw holes.

[0019] According to the above-mentioned integral welding tooling of the outer door frame of a forklift, the positioning mechanism also includes a sixth positioning component, and the sixth positioning component includes a positioning plate with a handle. The two ends of the positioning plate can be overlapped on the two vertical beams, and positioning grooves are provided on both ends of the positioning plate. The outer door frame also includes a bracket, which can be inserted into the positioning groove and abut against the inner side of the vertical beam.

[0020] According to the above-mentioned integral welding tooling for the outer mast of a forklift, it also includes a control mechanism, which includes a control panel, and the control panel is electrically connected to the first positioning assembly, the second positioning assembly, the third positioning assembly, the fourth positioning assembly and the fifth positioning assembly.

[0021] The present invention has the following beneficial effects:

[0022] 1. Multiple components of the outer door frame can be positioned and welded in sequence on one welding fixture. The outer door frame has high forming efficiency, good forming quality, more compact overall structure and lower cost.

[0023] 2. The second positioning assembly can be displaced relative to the first positioning assembly, which can be used for frames of different heights. The two fifth positioning assemblies can move along the side close to or away from each other, which is suitable for two vehicle legs with different spacings. This can improve the applicability of the welding tooling to different models of external masts;

[0024] 3. The pressure claws in the first positioning assembly can not only position the vertical beam, but also, after the beam is welded to other components, the pressure claws can be rotated to provide a clearance for the electrical box, so that the electrical box can be placed on the beam. At the same time, the electrical box can also be positioned by the two pressure claws, realizing multiple uses of the positioning assembly and avoiding interference with each other.

[0025] 4. The control panel can perform corresponding actions on multiple positioning components in sequence, with a high degree of automation and more convenient operation;

[0026] 5. Both the installation base plate and the installation vertical plate can be positioned by positioning bolts, which can effectively improve the positioning accuracy of the components and avoid the displacement of the component position due to accidental sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic diagram of the overall structure of the embodiment;

[0028] Figure 2 It is a side view of the overall structure of the embodiment;

[0029] Figure 3 2. It is a schematic structural diagram of a positioning plate in an embodiment;

[0030] Figure 4 2. It is a schematic structural diagram of an outer door frame of an embodiment.

[0031] In the picture:

[0032] 100, outer door frame; 110, frame; 111, vertical beam; 120, legs; 130, upper crossbeam; 140, middle crossbeam; 150, electrical box; 160, bracket;

[0033] 200, support mechanism; 210, welding platform; 211, support top plate; 211a, first guide rail; 211b, first positioning block; 212, support end plate; 212a, second guide rail; 212b, second positioning block;

[0034] 300, positioning mechanism; 310, first positioning assembly; 311, first clamping cylinder; 312, first lining cylinder; 313, pressure claw; 314, first pressing cylinder; 320, second positioning assembly; 321, mounting base; 321a, first positioning bolt; 322, first limiting seat; 330, third positioning assembly; 331, support seat; 332, positioning pin; 340, fourth positioning assembly; 341, second limiting seat; 342, second clamping cylinder; 350, fifth positioning assembly; 351, mounting riser; 351a, second positioning bolt; 352, third limiting seat; 353, third clamping cylinder; 354, first pressure arm; 355, rotating cylinder; 360, sixth positioning assembly; 361, positioning plate; 361a, positioning groove;

[0035] 400. Control mechanism; 410. Control panel. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0037] like Figure 1-4 As shown, a forklift outer frame integral welding fixture includes a support mechanism 200, a positioning mechanism 300 and a control mechanism 400. The support mechanism 200 is used to provide support for the outer frame 100, the positioning mechanism 300 and the control mechanism 400. The positioning mechanism 300 is used to fix the various components of the outer frame 100 on the support mechanism 200 in sequence, so as to weld the various components of the outer frame 100 in sequence and form the outer frame 100. The control mechanism 400 is used to control the positioning mechanism 300 to perform corresponding actions, thereby improving the overall automation level of the welding fixture, thereby facilitating operation and improving the forming efficiency of the outer frame 100.

[0038] In this embodiment, the outer door frame 100 includes a frame body 110, a leg 120, an upper crossbeam 130, a middle crossbeam 140, an electrical box 150 and a bracket 160. The above-mentioned welding tooling is used to weld the leg 120, the upper crossbeam 130, the middle crossbeam 140, the electrical box 150 and the bracket 160 to the frame body 110, thereby forming the outer door frame 100. After the outer door frame 100 is formed, its frame body 110 is arranged in a vertical direction, the leg 120 is located at the front side of the bottom end of the frame body 110, the upper crossbeam 130 is located at the top of the frame body 110, the middle crossbeam 140 is located in the middle of the frame body 110, the electrical box 150 is located at the rear side of the bottom end of the frame body 110 and is used to place electrical appliances, and the bracket 160 is arranged on the inner side of the top end of the frame body 110.

[0039] Specifically, the support mechanism 200 includes a welding platform 210, which is provided with a support top plate 211 arranged in a horizontal direction and a support end plate 212 arranged in a vertical direction, wherein the support top plate 211 is used to provide support for the frame 110, and the support end surface is used to provide support for the vehicle leg 120.

[0040] Specifically, the positioning mechanism 300 includes a first positioning assembly 310, a second positioning assembly 320, a third positioning assembly 330, a fourth positioning assembly 340, a fifth positioning assembly 350, and a sixth positioning assembly 360, wherein the first positioning assembly 310 and the second positioning assembly 320 are used to fix the frame 110 to the support top plate 211, and the first positioning assembly 310 and the second positioning assembly 320 are arranged on the top of the support top plate 211 along the length direction of the support top plate 211, and the bottom end of the frame 110 is located at the first positioning assembly 310. The second positioning assembly 320 is located on the top of the frame 110, and the second positioning assembly 320 can move toward or away from the side of the first positioning assembly 310, that is, the first positioning assembly 310 and the second positioning assembly 320 can be applied to frames 110 of different heights. In this embodiment, when the frame 110 is laid on the support top plate 211 in the horizontal direction, its height direction is the length direction of the support top plate 211, and the third positioning assembly 320 is located on the top of the frame 110. The positioning assembly 330 is used to fix the upper crossbeam 130 to the top of the frame 110, the fourth positioning assembly 340 is used to fix the middle crossbeam 140 to the frame 110, and the sixth positioning assembly 360 is used to fix the bracket 160 to the frame 110. The third positioning assembly 330, the fourth positioning assembly 340 and the sixth positioning assembly 360 are all integrated on the second positioning assembly 320 and can move synchronously with the second positioning assembly 320 to adapt to frames 110 of different heights. The two fifth positioning assemblies 350 are respectively used to fix the bracket 160 to the frame 110. The two legs 120 are fixed to the support end plate 212, and the two fifth positioning assemblies 350 are arranged at intervals on both sides of the support end plate 212 along the width direction of the support end plate 212, and the two fifth positioning assemblies 350 can move along the side close to or away from each other to be suitable for two legs 120 with different spacings. The positioning mechanism 300 can realize the sequential positioning of multiple components, effectively utilize the space of the welding platform 210, avoid repeated movement and positioning of each component, and has good applicability to different models of external door frames 100.

[0041] Furthermore, the frame 110 includes two vertical beams 111, two legs 120 are installed at the bottom ends of the two vertical beams 111, an upper crossbeam 130 is installed between the top ends of the two vertical beams 111, a middle crossbeam 140 is installed between the middle parts of the two vertical beams 111, and an electrical box 150 is installed at the top of the bottom ends of the two vertical beams 111. In this embodiment, the top of the bottom end of the vertical beam 111 refers to when the vertical beam 111 is laid horizontally on the supporting top plate 211, and the top of the bottom end of the vertical beam 111 actually refers to the rear side of the bottom end of the vertical beam 111.

[0042] In this embodiment, the two vertical beams 111 each include a channel steel and a flat steel, and the flat steel is arranged on top of the channel steel.

[0043] Furthermore, the first positioning assembly 310 includes a first clamping cylinder 311 and a first lining cylinder 312. At least two first clamping cylinders 311 are symmetrically arranged on both sides of the support top plate 211 near one end of the support end plate 212. The first lining cylinder 312 is located between the two vertical beams 111 and is used to cooperate with the first clamping cylinder 311 to clamp the two vertical beams 111. The distance between the piston rods of at least two first clamping cylinders 311 can be adjusted according to the distance between the outer sides of the two vertical beams 111, and then the two vertical beams 111 are simultaneously driven to move outward by the piston rods at both ends of the first lining cylinder 312 until the outer sides of the two vertical beams 111 are respectively abutted against the piston rods of two or more first clamping cylinders to achieve clamping and fixation of the vertical beams 111. In this embodiment, a total of four first clamping cylinders are provided, which are symmetrically arranged on both sides of the support end plate 212.

[0044] Furthermore, since the legs 120 are vertically connected to the bottom ends of the frame 110, when the two vertical beams 111 are arranged on the support top plate 211 in the horizontal direction, the legs 120 and the vertical beams 111 are welded in the vertical direction, that is, the vertical beams 111 will inevitably be subjected to an upward force. In order to prevent the vertical beams 111 from moving upward, the first positioning assembly 310 also includes a pressure claw 313 and a first clamping cylinder 314 corresponding to the pressure claw 313. The two pressure claws 313 are rotatably arranged on both sides of the support top plate 211. The first clamping cylinder 314 is used to provide power for the rotation of the pressure claw 313. The first clamping cylinder 314 drives the pressure claw 313 to rotate in the vertical direction. In this embodiment, the pressure claw 313 has a first clamping position and a second clamping position. When the locking cam 313 is in the locked position, the locking cam 313 is in the locked position, and the winch 30, when in locked position, can lock the locking cam 313 and the winch 30 together.

[0045] Furthermore, the second positioning assembly 320 includes a mounting base 321 and a first limit seat 322 and a second liner cylinder located on the mounting base 321. The support top plate 211 is provided with two first guide rails 211a arranged along its length direction and a first positioning block 211b located outside the first guide rail 211a. The first positioning block 211b is provided with a plurality of first positioning screw holes arranged along the length direction of the support top plate 211. The two ends of the mounting base 321 are slidably connected to the corresponding first guide rail 211a through a slider, and a first positioning bolt 321a is provided at both ends of the mounting base 321. The first positioning bolt 321a can be inserted into any first positioning screw hole. The movement of the mounting base 321 can drive the displacement of other components on the mounting base plate 321, and the positioning of the mounting base plate 321 can be achieved by cooperating with the first positioning bolt 321a and the first positioning screw hole to prevent it from moving at will. The two first limit seats 322 are respectively located at both ends of the mounting base plate 321, and the top ends of the two vertical beams 111 are located on the mounting base plate 321 and between the two first limit seats 322. The second lining cylinder is located between the two vertical beams 111 and is used to drive the top ends of the two vertical beams 111 to abut against the two first limit seats 322 respectively, that is, when the second lining cylinder is started, it can drive the top ends of the two vertical beams 111 to move outward and cooperate with the two first limit seats 322 to clamp the top ends of the two vertical beams 111.

[0046] Of course, in this embodiment, in order to realize the driving of the mounting base 321 , a driving unit such as a cylinder or a motor may be provided to provide power for the movement of the mounting base 321 .

[0047] Furthermore, the third positioning assembly 330 includes a support seat 331 and a positioning pin 332. The two support seats 331 are arranged on the mounting base plate 321 along the length direction of the mounting base plate 321 and are used to provide support for the upper crossbeam 130. The two ends of the upper crossbeam 130 can be respectively attached to the outer side of the top end of the two vertical beams 111, and a first positioning hole is provided at both ends of the upper crossbeam 130, and a second positioning hole is provided on the outer side of the vertical beam 111. The positioning pin 332 can be inserted into the connecting hole between the first positioning hole and the second positioning hole. After the top end of the vertical beam 111 is fixed, the upper crossbeam 130 can be placed on the support seat 331, and the positioning pin 332 can be used to position the upper crossbeam 130 and the vertical beam 111.

[0048] Furthermore, the fourth positioning assembly 340 includes a second limit seat 341 and a second clamping cylinder 342 fixed on the mounting base 321. The second limit seat 341 and the second clamping cylinder 342 are respectively located on both sides of the middle cross beam 140, and the second clamping cylinder 342 is used to drive the middle cross beam 140 to abut against the second limit seat 341 to clamp the middle cross beam 140. After the middle cross beam 140 is placed, the second clamping cylinder 342 can be used to drive the middle cross beam 140 to abut against the second limit seat 341.

[0049] Furthermore, the fifth positioning assembly 350 includes a mounting vertical plate 351 and a third limiting seat 352, a third clamping cylinder 353, a first pressing arm 354 and a rotating cylinder 355 located on the mounting vertical plate 351. The upper and lower ends of the supporting end plate 212 are provided with second guide rails 212a arranged in the horizontal direction. The upper and lower ends of the mounting vertical plate 351 are slidably connected to the two second guide rails 212a through sliders. The third limiting seat 352 and the third clamping cylinder 353 are respectively located on both sides of the vehicle leg 120. The first pressing arm 354 is fixed to one side of the vehicle leg 120 through the rotating cylinder 355 and can abut against the outer side of the vehicle leg 120. That is, the cooperation of the third clamping cylinder 353 and the third limiting seat 352 can clamp and position the vehicle leg 120 in the horizontal direction, and the rotating cylinder 355 can drive the first pressing arm 354 to press the vehicle leg 120 in the horizontal direction. The arm 354 rotates to abut against the outer side of the leg 120, so that the leg 120 fits against the support base plate and is positioned from the front-to-back direction to achieve complete positioning of the leg 120. By adjusting the position of the two fifth positioning assemblies 350, it can be suitable for two legs 120 with different spacings. Similarly, in order to achieve the position fixation of the installation vertical plate 351, a second positioning block 212b is further provided on the support end plate 212. The second positioning block 212b is provided with a plurality of second positioning screw holes arranged in the horizontal direction, and a second positioning bolt 351a is provided on the installation vertical plate 351. The second positioning bolt 351a can be inserted into any second positioning screw hole. The positioning of the installation vertical plate 351 is achieved by cooperating with the second positioning bolt 351a and the second positioning screw hole to prevent it from moving at will and ensure the positioning accuracy of the leg 120.

[0050] Of course, in this embodiment, the displacement of the mounting vertical plate 351 can also be driven by a driving unit such as a cylinder or a motor.

[0051] In order to prevent the installation base plate 321 and the installation vertical plate 351 from being separated from the guide rail, limit plates are provided at both ends of the guide rail to limit the installation base plate 321 and the installation vertical plate 351 from being separated from the guide rail.

[0052] Furthermore, the sixth positioning assembly 360 includes a positioning plate 361 with a handle, and the two ends of the positioning plate 361 can be overlapped on the two vertical beams 111, and positioning grooves 361a are provided on both ends of the positioning plate 361. The outer door frame 100 also includes a lever 160, which can be inserted into the positioning groove 361a and abut against the inner side of the vertical beam 111. The positioning plate 361 can be extracted through the handle and placed at a preset position of the vertical beam 111, and then the lever 160 can be placed in the positioning groove 361a to achieve clamping and positioning of the lever 160, and then welding can be performed.

[0053] In this embodiment, two positioning plates 361 are provided, which can be arranged on the vertical beam 111 along the length direction of the vertical beam 111 and are both used to position the bracket 160 .

[0054] Furthermore, in order to improve the degree of automation of the welding tooling, the control mechanism 400 includes a control panel 410, which is electrically connected to the first positioning component 310, the second positioning component 320, the third positioning component 330, the fourth positioning component 340, the fifth positioning component 350 and the sixth positioning component 360. It can control multiple positioning components to act in sequence to achieve automatic clamping of each component.

[0055] In this embodiment, the welding steps of the outer door frame 100 are as follows:

[0056] 1. All cylinders are reset to ensure that they do not interfere with the placement of the components of the outer mast 100;

[0057] 2. Place the frame 110 on the support top plate 211 and position the frame 110 using the first positioning assembly 310 and the second positioning assembly 320. Place the legs 120 on the support end plates 212 and position the two legs using the two fifth positioning assemblies 350. Place the upper crossbeam 130 and the middle crossbeam 140 at corresponding positions on the frame 110 and position them using the third positioning assembly 330 and the fourth positioning assembly 340.

[0058] 3. Use robots or manual labor to perform initial welding on the above-mentioned multiple components;

[0059] 4. After the initial welding is completed, release the pressure claw 313, then place the electrical box 150 on the frame 110, use the pressure claw 313 to clamp and position the electrical box 150, and weld the electrical box 150. After welding is completed, place the positioning plate 361 on the frame 110 and weld the bracket 160;

[0060] 5. After the secondary welding is completed, loosen all cylinders and take out the outer mast 100 to complete the forming of an outer mast 100.

[0061] The technical solutions of the present invention have been described in detail above with reference to the accompanying drawings, and the embodiments described are intended to facilitate understanding of the concepts of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0062] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0063] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A tool for welding the outer mast of a stacker truck, wherein the outer mast comprises a frame, legs, an upper crossbeam, a middle crossbeam, and an electrical box. The tool is used to weld the legs, the upper crossbeam, the middle crossbeam, and the electrical box to the frame, and is characterized in that: The tailor-made welding tool comprises: The support mechanism includes a tailor-welded platform, on which a support top plate arranged in a horizontal direction and a support end plate arranged in a vertical direction are provided; The positioning mechanism includes a first positioning assembly and a second positioning assembly for fixing the frame to the support top plate, a third positioning assembly for fixing the upper crossbeam to the frame, a fourth positioning assembly for fixing the middle crossbeam to the frame, and two fifth positioning assemblies for fixing the two legs to the frame; wherein, The first positioning assembly and the second positioning assembly are arranged at intervals on the top of the supporting top plate along the length direction of the supporting top plate, and the second positioning assembly can move toward or away from the side of the first positioning assembly to adapt to the frames of different heights, and the third positioning assembly and the fourth positioning assembly are both integrated on the second positioning assembly; The two fifth positioning assemblies are spaced apart on both sides of the support end plate along the width direction of the support end plate, and the two fifth positioning assemblies can move along one side close to or away from each other to be suitable for two vehicle legs with different spacings.

2. The overall welding fixture for the outer mast of a stacker according to claim 1, characterized in that: The frame includes two vertical beams, the two legs are installed at the bottom ends of the two vertical beams, the upper crossbeam is installed between the top ends of the two vertical beams, the middle crossbeam is installed between the middle parts of the two vertical beams, and the electrical box is installed on the top of the bottom ends of the two vertical beams.

3. The overall welding fixture for the outer mast of a stacker according to claim 2, characterized in that: The first positioning assembly includes a first clamping cylinder and a first lining cylinder. At least two of the first clamping cylinders are symmetrically arranged on both sides of the support top plate close to one end of the support end plate. The first lining cylinder is located between the two vertical beams and is used to cooperate with the first clamping cylinder to clamp the two vertical beams.

4. The overall welding fixture for the outer mast of a stacker according to claim 3, characterized in that: The first positioning assembly further includes a pressure claw and a first pressing cylinder corresponding to the pressure claw, wherein the two pressure claws are rotatably arranged on both sides of the supporting top plate symmetrically, and the first pressing cylinder is used to provide power for the rotation of the pressure claw; The pressing claw has a first pressing position and a second pressing position. When the pressing claw is located at the first pressing position, the pressing claw can abut against the top of the vertical beam. When the pressing claw is located at the second pressing position, the two pressing claws respectively abut against the two outer sides of the electrical box to clamp the electrical box.

5. The overall welding fixture for the outer mast of a stacker according to claim 2, characterized in that: The second positioning assembly includes a mounting base, a first limiting seat located on the mounting base, and a second liner cylinder. The support top plate is provided with two first guide rails arranged along its length direction and a first positioning block located outside the first guide rails. The first positioning block is provided with a plurality of first positioning screw holes arranged along the length direction of the support top plate. Both ends of the mounting base are slidably connected to the corresponding first guide rails through a slider, and both ends of the mounting base are provided with a first positioning bolt, which can be inserted into any of the first positioning screw holes. The two first limit seats are respectively located at the two ends of the mounting base, the top ends of the two vertical beams are located on the mounting base and between the two first limit seats, and the second lining cylinder is located between the two vertical beams and is used to drive the top ends of the two vertical beams to abut against the two first limit seats respectively.

6. The overall welding fixture for the outer mast of a stacker according to claim 5, characterized in that: The third positioning assembly includes a support seat and a positioning pin. The two support seats are arranged on the mounting base along the length direction of the mounting base and are used to provide support for the upper crossbeam. The two ends of the upper crossbeam can be respectively attached to the outer side of the top end of the two vertical beams, and a first positioning hole is provided at both ends of the upper crossbeam, and a second positioning hole is provided on the outer side of the vertical beam. The positioning pin can be inserted into the connecting hole between the first positioning hole and the second positioning hole.

7. The overall welding fixture for the outer mast of a stacker according to claim 5, characterized in that: The fourth positioning assembly includes a second limit seat and a second clamping cylinder fixed on the mounting base. The second limit seat and the second clamping cylinder are respectively located on both sides of the middle beam, and the second clamping cylinder is used to drive the middle beam to abut against the second limit seat to clamp the middle beam.

8. The overall welding fixture for the outer mast of a stacker according to claim 2, characterized in that: The fifth positioning assembly includes a mounting vertical plate and a third limiting seat located on the mounting vertical plate, a third clamping cylinder, a first pressing arm and a rotating cylinder, the upper and lower ends of the support end plate are provided with second guide rails arranged in the horizontal direction, the upper and lower ends of the mounting vertical plate are slidably connected to the two second guide rails through sliders, the third limiting seat and the third clamping cylinder are respectively located on both sides of the vehicle leg, and the first pressing arm is fixed to one side of the vehicle leg through the rotating cylinder and can abut against the outer side of the vehicle leg; The support end plate is further provided with a second positioning block, the second positioning block is provided with a plurality of second positioning screw holes arranged in a horizontal direction, the mounting vertical plate is provided with a second positioning bolt, and the second positioning bolt can be inserted into any of the second positioning screw holes.

9. The overall welding fixture for the outer mast of a stacker according to claim 2, characterized in that: The positioning mechanism also includes a sixth positioning component, which includes a positioning plate with a handle. The two ends of the positioning plate can be overlapped on the two vertical beams, and positioning grooves are provided on both ends of the positioning plate. The outer door frame also includes a lever, which can be inserted into the positioning groove and abut against the inner side of the vertical beam.

10. The overall welding fixture for the outer mast of a stacker according to claim 1, characterized in that: It also includes a control mechanism, which includes a control panel. The control panel is connected to the first positioning component, the second positioning component, the third positioning component, the fourth positioning component and the fifth positioning component through electrical signals.

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