A welding fixture for the outer mast legs of a stacker truck

Abstract

This utility model relates to the technical field of welding fixtures, and specifically discloses a welding fixture for the outer mast legs of a stacker truck. It includes a support mechanism, a positioning mechanism, and a welding mechanism. The support mechanism includes an active positioner, a passive positioner, and a support frame rotatably disposed between the active and passive positioners. Both ends of the support frame are connected to the active and passive positioners respectively. The distance between the active and passive positioners is adjustable. The positioning mechanism is disposed on the support frame and is used to position the legs located on the support frame. The welding mechanism is located on one side of the support mechanism and is used to weld the legs located on the support frame. By adjusting the distance between the active and passive positioners, it can be applied to different types of legs. Furthermore, by rotating the legs through the active positioner, the welding angle of the legs can be adjusted, enabling multi-angle welding without repeated positioning and disassembly, thus improving welding efficiency and precision.

Description

Technical Field

[0001] This utility model relates to the technical field of welding fixtures, specifically to a welding fixture for the outer mast legs of a stacker truck. Background Technology

[0002] The legs of the stacker's outer mast mainly serve as rolling supports and are an indispensable part of the stacker. As the market demand for stackers increases, the demand for the number of outer mast legs also increases. In the existing technology, the legs of the stacker's outer mast include two legs, a connecting beam connecting the two legs, and a wheel frame located at the front end of the two legs. The wheel frame is used to install rollers. During the assembly process, the connecting beam and the wheel frame need to be welded to the two legs. This is usually done manually, but manual welding has problems such as high labor intensity, high safety risks, and low welding accuracy. Utility Model Content

[0003] This utility model addresses the aforementioned problems and aims to provide a welding fixture for the legs of a stacker truck's outer mast. This fixture enables automatic positioning and welding of the legs, improving welding efficiency and precision while reducing the operator's workload.

[0004] To achieve the above objectives, this utility model provides a welding fixture for the outer mast legs of a stacker truck, comprising:

[0005] The support mechanism includes an active positioner, a passive positioner, and a support frame rotatably disposed between the active positioner and the passive positioner. The two ends of the support frame are respectively connected to the active positioner and the passive positioner, and the distance between the active positioner and the passive positioner is adjustable.

[0006] A positioning mechanism is provided on the support frame and is used to position the vehicle legs located on the support frame;

[0007] A welding mechanism, located on one side of the support mechanism, is used to weld the legs located on the support frame.

[0008] According to the above-described welding fixture for the outer mast legs of a stacker truck, the support mechanism further includes a support guide rail arranged horizontally, the active positioner and the driven positioner are both arranged on the support guide rail, and the driven positioner is connected to the support guide rail through a slide.

[0009] According to the above-described welding fixture for the outer mast legs of a stacker truck, the active positioner includes a first housing, a servo motor, a reducer, and an active turntable. The active turntable is rotatably disposed inside the first housing, the servo motor is fixed inside the first housing, and the servo motor is connected to the active turntable through the reducer.

[0010] According to the above-described welding fixture for the outer mast legs of a stacker truck, the driven positioner includes a second housing and a driven turntable. The driven turntable is rotatably disposed inside the second housing and is arranged opposite to the driving turntable.

[0011] According to the above-described welding fixture for the outer mast legs of a stacker truck, both the active turntable and the driven turntable are provided with connecting blocks, and both ends of the support frame are detachably connected to the corresponding connecting blocks by bolts.

[0012] According to the above-described welding fixture for the outer mast legs of a stacker truck, the legs include two outriggers, a connecting beam, and two wheel frames. The welding fixture is used to weld the connecting beam to the tail ends of the two outriggers and to weld the two wheel frames to the front ends of the two outriggers respectively.

[0013] The positioning mechanism includes a first positioning component for positioning the support onto the support frame, a second positioning component for positioning the connecting beam between the two rear ends of the outriggers, and a third positioning component for positioning the wheel frame onto the front end of the outrigger. The first positioning component, the second positioning component, and the third positioning component are all located on the support frame.

[0014] According to the above-described welding fixture for the outer mast legs of a stacker truck, the first positioning component includes a first clamping cylinder, a second clamping cylinder, a first limiting plate, a second limiting plate, and a first pressing cylinder. The first clamping cylinder and the first limiting plate are respectively located at both ends of the support leg and cooperate to clamp the support leg along the length direction of the support leg. The second clamping cylinder and the second limiting plate are respectively located on both sides of the support leg and cooperate to clamp the support leg along the width direction of the support leg. The piston rod of the first pressing cylinder can abut against the top of the support leg.

[0015] According to the above-described welding fixture for the outer mast legs of a stacker truck, the second positioning component includes a third clamping cylinder, a third limiting block, and a second pressing cylinder. The third clamping cylinder and the third limiting block are located on both sides of the connecting beam and cooperate to clamp the legs along the width direction of the connecting beam. The piston rod of the second pressing cylinder can abut against the top of the connecting beam.

[0016] According to the above-described welding fixture for the outer mast legs of a stacker truck, the third positioning component includes two fourth clamping cylinders, which are located on both sides of the wheel frame and cooperate to clamp the wheel frame along the width direction of the wheel frame.

[0017] According to the above-described welding fixture for the outer mast legs of a stacker truck, the support frame is provided with guide wheels arranged along its length, and the legs are connected to the guide wheels.

[0018] This utility model has the following beneficial effects:

[0019] 1. The active and passive positioners can be used to drive the support frame to rotate, which in turn drives the legs positioned on the support frame to rotate synchronously. Thus, the welding mechanism can be used to perform multi-angle welding of the legs, realize automatic welding of the legs, improve welding accuracy and efficiency, and reduce the labor intensity and safety risks of the operator.

[0020] 2. The distance between the driven positioner and the active positioner is adjustable, which can be used for different models of car legs;

[0021] 3. Guide wheels are provided on the support frame to provide rolling support for the legs, which facilitates fine-tuning of the leg position. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0023] Figure 2 This is a schematic diagram of the positioning mechanism and the assembly of the legs on the support frame in an embodiment;

[0024] Figure 3 This is a schematic diagram of the assembly of the active positioner and the driven positioner on the support guide rail in an embodiment.

[0025] In the picture:

[0026] 100. Support mechanism; 110. Active positioner; 111. First housing; 112. Servo motor; 113. Reducer; 114. Active turntable; 120. Driven positioner; 121. Slide; 122. Second housing; 123. Driven turntable; 123a. Connecting block; 130. Support frame; 131. Guide wheel; 140. Support guide rail;

[0027] 200. Positioning mechanism; 210. First positioning component; 211. First clamping cylinder; 212. Second clamping cylinder; 213. First limiting plate; 214. Second limiting plate; 215. First pressing cylinder; 220. Second positioning component; 221. Third clamping cylinder; 222. Third limiting block; 223. Second pressing cylinder; 230. Third positioning component; 231. Fourth clamping cylinder;

[0028] 300. Welding mechanism;

[0029] 400, Leg; 410, Outrigger; 420, Connecting beam; 430, Wheel frame. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] like Figure 1-3 As shown, a welding fixture for the outer mast legs of a stacker truck includes a support mechanism 100, a positioning mechanism 200, and a welding mechanism 300. The support mechanism 100 provides rotatable support for the legs 400 and the positioning mechanism 200, while the welding mechanism 300 is located on one side of the support mechanism 100 and is used to weld the legs 400 located on the support mechanism 100.

[0032] Specifically, the support mechanism 100 includes an active positioner 110, a passive positioner 120, and a support frame 130 rotatably disposed between the active positioner 110 and the passive positioner 120. Both ends of the support frame 130 are connected to the active positioner 110 and the passive positioner 120, respectively. The distance between the active positioner 110 and the passive positioner 120 is adjustable. A positioning mechanism 200 is disposed on the support frame 130 and is used to position the leg 400 located on the support frame 130. First, the distance between the active positioner 110 and the passive positioner 120 is adjusted. The positioning mechanism 200 allows the support frame 130 to be adjusted to fit different lengths, and thus to different models of legs 400. After all the components of the legs 400 are positioned on the support frame 130 by the positioning mechanism 200, the welding mechanism 300 can be used to weld the components of the legs 400. Since the active positioner 110 can drive the support frame 130 to rotate, it will drive the legs 400 to rotate, thereby adjusting the welding angle of the legs 400 and realizing multi-angle welding. There is no need for repeated positioning and disassembly, which improves welding efficiency and welding accuracy.

[0033] In this embodiment, the support frame 130 is initially positioned horizontally to facilitate the placement of the leg 400 on the support frame 130. After placement, the positioning mechanism 200 is used to position each component of the leg 400 sequentially. After positioning, the welding mechanism 300 is used to weld each component of the leg 400. During the welding process, the active positioner 110 can drive the support frame 130 to rotate, thereby driving the leg 400 to rotate, so as to facilitate multi-angle welding. After welding is completed, the support frame 130 is rotated to a horizontal position, and then the positioning mechanism 200 releases the leg 400.

[0034] In this embodiment, a guide wheel 131 is provided on the support frame 130 along its length direction. The leg 400 is connected to the guide wheel 131. That is, when the leg 400 is placed on the support frame 130, its bottom will be connected to the top of the guide wheel 131. With the setting of the guide wheel 131, the leg 400 can easily move on the support frame 130 and adjust its position.

[0035] Furthermore, in order to achieve the adjustment of the distance between the active positioner 110 and the driven positioner 120, the support mechanism 100 also includes a horizontally arranged support rail 140. Both the active positioner 110 and the driven positioner 120 are arranged on the support rail 140. The active positioner 110 is fixed on the support rail 140 and its position cannot be changed, while the driven positioner 120 is connected to the support rail 140 through a slide 121. The driven positioner 120 can slide on the support rail 140 through the slide 121, thereby adjusting the distance between the driven positioner 120 and the active positioner 110 to accommodate support frames 130 of different lengths, and thus to accommodate legs 400 of different lengths and models.

[0036] Furthermore, the active positioner 110 includes a first housing 111, a servo motor 112, a reducer 113, and an active turntable 114. The first housing 111 provides support for the servo motor 112, the reducer 113, and the active turntable 114. The active turntable 114 is rotatably disposed inside the first housing 111. The servo motor 112 is fixed inside the first housing 111 and is connected to the active turntable through the reducer 113. The servo motor 112 drives the active turntable to rotate through the reducer 113. The servo motor 112 has high control precision, which can improve the rotational precision of the support frame 130. The reducer 113 can prevent the support frame 130 from rotating too fast and ensure the smooth rotation of the support frame 130.

[0037] Furthermore, the driven positioner 120 includes a second housing 122 and a driven turntable 123. The second housing 122 provides support for the driven turntable 123. The driven turntable 123 is rotatably disposed inside the second housing 122 and is arranged opposite to the driving turntable 114. One end of the support frame 130 is connected to the driving turntable 114 and the other end is connected to the driven turntable 123. When the driving turntable 114 rotates, it drives the support frame 130 to rotate, and the support frame 130 drives the driven turntable 123 to rotate. Therefore, the function of the driven turntable 123 is to provide a rotational support for the support frame 130.

[0038] Furthermore, in order to accommodate support frames 130 of different lengths, both ends of the support frame 130 are required to be detachably connected to the active turntable 114 and the driven turntable 123. Therefore, in this embodiment, both the active turntable 114 and the driven turntable 123 are provided with connecting blocks 123a. Both ends of the support frame 130 are detachably connected to the corresponding connecting blocks 123a by bolts. When the support frame 130 needs to be replaced, the bolts are removed, the old support frame 130 is removed, the distance between the active turntable 114 and the driven turntable 123 is adjusted, the new support frame 130 is placed between the two, and then the bolts are installed.

[0039] In this embodiment, the leg 400 includes two support legs 410, a connecting beam 420, and two wheel frames 430. The welding fixture is used to weld the connecting beam 420 to the tail ends of the two support legs 410 and to weld the two wheel frames 430 to the front ends of the two support legs 410 respectively. After welding is completed, a complete leg 400 product is obtained. Therefore, the positioning mechanism 200 includes a first positioning component 210 for positioning the support on the support frame 130, a second positioning component 220 for positioning the connecting beam 420 between the tail ends of the two support legs 410, and a third positioning component 230 for positioning the wheel frames 430 to the front ends of the support legs 410. The first positioning component 210, the second positioning component 220, and the third positioning component 230 are all located on the support frame 130.

[0040] Furthermore, the first positioning assembly 210 includes a first clamping cylinder 211, a second clamping cylinder 212, a first limiting plate 213, a second limiting plate 214, and a first pressing cylinder 215. The first clamping cylinder 211 and the first limiting plate 213 are located at both ends of the support leg 410 and cooperate to clamp the support leg 410 along its length. The second clamping cylinder 212 and the second limiting plate 214 are located on both sides of the support leg 410 and cooperate to clamp the support leg 410 along its width. The piston rod of the first pressing cylinder 215 can... The top of the outrigger 410 abuts against the support frame 130, and two first positioning components 210 are provided. The two first positioning components 210 are used to fix the two outriggers 410 respectively. When the outrigger 410 is placed on the support frame 130, it has three degrees of freedom. Therefore, its length direction degree of freedom can be restricted by the first clamping cylinder 211 and the first limiting plate 213, its width direction degree of freedom can be restricted by the second clamping cylinder 212 and the second limiting plate 214, and its height direction degree of freedom can be restricted by the first pressing cylinder 215 cooperating with the support frame 130 to prevent it from moving.

[0041] Furthermore, the second positioning component 220 includes a third clamping cylinder 221, a third limiting block 222, and a second pressing cylinder 223. The third clamping cylinder 221 and the third limiting block 222 are located on both sides of the connecting beam 420, and cooperate to clamp the support leg 410 along the width direction of the connecting beam 420. The piston rod of the second pressing cylinder 223 can abut against the top of the connecting beam 420. Since the two ends of the connecting beam 420 are connected to the tail ends of the two support legs 410 respectively, its length direction has been positioned. Therefore, it is only necessary to use the third clamping cylinder 221 and the third limiting block 222 to align and limit the width direction, and the second pressing cylinder 223 to limit the height direction, so as to prevent displacement.

[0042] Furthermore, the third positioning component 230 includes two fourth clamping cylinders 231, which are located on both sides of the wheel frame 430 and cooperate to clamp the wheel frame 430 along the width direction of the wheel frame 430. The piston rods of the two fourth clamping cylinders 231 extend out to clamp the wheel frame 430.

[0043] In this embodiment, the welding mechanism 300 is configured as a welding robot to achieve automatic welding.

[0044] In this embodiment, a welding fixture for the outer mast leg 400 of a stacker truck is disclosed, including a support mechanism 100, a positioning mechanism 200, and a welding mechanism 300. The support mechanism 100 includes an active positioner 110, a driven positioner 120, and a support frame 130 rotatably disposed between the active positioner 110 and the driven positioner 120. Both ends of the support frame 130 are respectively connected to the active positioner 110 and the driven positioner 120. The distance between the active positioner 110 and the driven positioner 120 is adjustable. The positioning mechanism 200 is disposed on the support frame 130. The upper part is used to position the leg 400 located on the support frame 130. The welding mechanism 300 is located on one side of the support mechanism 100 and is used to weld the leg 400 located on the support frame 130. By adjusting the distance between the active positioner 110 and the driven positioner, it can be adapted to support frames 130 of different lengths, and thus to different models of leg 400. The active positioner 110 drives the leg 400 to rotate, thereby adjusting the welding angle of the leg 400, realizing multi-angle welding without repeated positioning and disassembly, improving welding efficiency and welding accuracy.

[0045] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are 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.

Claims

1. A welding tool for the outrigger legs of a reach stacker, characterized in that include: The support mechanism includes an active positioner, a passive positioner, and a support frame rotatably disposed between the active positioner and the passive positioner. The two ends of the support frame are respectively connected to the active positioner and the passive positioner, and the distance between the active positioner and the passive positioner is adjustable. A positioning mechanism is provided on the support frame and is used to position the vehicle legs located on the support frame; A welding mechanism, located on one side of the support mechanism, is used to weld the legs located on the support frame.

2. The welding tooling for the outer mast leg of a reach stacker according to claim 1, characterized in that, The support mechanism also includes a support guide rail arranged horizontally. Both the active positioner and the passive positioner are arranged on the support guide rail, and the passive positioner is connected to the support guide rail through a slide.

3. The welding tooling for the outer mast leg of a reach stacker according to claim 1 or 2, characterized in that, The active positioner includes a first housing, a servo motor, a reducer, and an active turntable. The active turntable is rotatably disposed inside the first housing. The servo motor is fixed inside the first housing and is connected to the active turntable through the reducer.

4. The welding tooling for the outer mast leg of a reach stacker according to claim 3, characterized in that, The driven positioner includes a second housing and a driven turntable. The driven turntable is rotatably disposed inside the second housing and is arranged opposite to the driving turntable.

5. The welding tooling for the outer mast leg of a reach stacker as claimed in claim 4, wherein, Both the active turntable and the driven turntable are provided with connecting blocks, and both ends of the support frame are detachably connected to the corresponding connecting blocks by bolts.

6. The welding tooling for the outer mast leg of a reach stacker as claimed in claim 1, wherein, The vehicle leg includes two legs, a connecting beam, and two wheel frames. The welding fixture is used to weld the connecting beam to the tail ends of the two legs and to weld the two wheel frames to the front ends of the two legs respectively. The positioning mechanism includes a first positioning component for positioning the support onto the support frame, a second positioning component for positioning the connecting beam between the two rear ends of the outriggers, and a third positioning component for positioning the wheel frame onto the front end of the outrigger. The first positioning component, the second positioning component, and the third positioning component are all located on the support frame.

7. The welding tooling for the outer mast leg of a reach stacker as claimed in claim 6, wherein, The first positioning component includes a first clamping cylinder, a second clamping cylinder, a first limiting plate, a second limiting plate, and a first pressing cylinder. The first clamping cylinder and the first limiting plate are respectively located at both ends of the support leg and cooperate to clamp the support leg along the length direction of the support leg. The second clamping cylinder and the second limiting plate are respectively located on both sides of the support leg and cooperate to clamp the support leg along the width direction of the support leg. The piston rod of the first pressing cylinder can abut against the top of the support leg.

8. The welding tooling for the outer mast leg of a reach stacker as claimed in claim 6, wherein, The second positioning component includes a third clamping cylinder, a third limiting block, and a second pressing cylinder. The third clamping cylinder and the third limiting block are located on both sides of the connecting beam and cooperate to clamp the support leg along the width direction of the connecting beam. The piston rod of the second pressing cylinder can abut against the top of the connecting beam.

9. The welding tooling for the outrigger legs of the external mast of a lift truck of claim 6 wherein, The third positioning component includes two fourth clamping cylinders, which are located on both sides of the wheel frame and cooperate to clamp the wheel frame along the width direction of the wheel frame.

10. The welding tooling for the outrigger legs of the external mast of a lift truck of claim 1 wherein, The support frame is provided with guide wheels arranged along its length, and the vehicle legs are connected to the guide wheels.

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