Quick welding tool for forklift frame

Abstract

The invention relates to a quick welding tool for a forklift frame, which is applied to the field of welding processing and comprises two bases with recesses at the tops, a plurality of separated welding units are slidably mounted in a guide rail, the output end of a driving motor is connected with a protective cover, and a welding gun is mounted on the top wall of the protective cover; a rotating gear ring is rotationally connected to the interior of each recess, rotating motors are installed on the surfaces, deviating from each other, of the supporting frames, one output end of each rotating motor is connected with a driving gear, and a first electric extension rod is installed in each rotating gear ring in a penetrating mode through a shaft sleeve; a plurality of third electric extension rods are inserted into the inner wall of the rotating gear ring, an adjusting unit used for adjusting the butt joint state of the steel pipe and the square pipe is installed on the inner side of the rotating gear ring, the welding device for multi-station welding operation can be separated through the separating welding unit and the adjusting unit, automatic alignment of the steel pipe and the square pipe is achieved, and the welding efficiency is improved. And the time needed by manual alignment and splicing is shortened, and the welding efficiency is further improved.

Description

Technical Field

[0001] The invention relates to a forklift frame welding tool, in particular to a forklift frame quick welding tool applied in the field of welding processing. Background Art

[0002] The forklift frame is the base of the forklift, supporting the weight of all the forklift accessories and cargo, and bearing various forces, moments and loads. It is one of the important components of the forklift. It has various structural types, a wide range of material choices, outstanding functional characteristics, and requires regular maintenance and inspection to ensure its normal operation and service life.

[0003] The specification of Chinese invention patent CN118578049B discloses a frame assembly welding tool and a frame assembly welding method. The frame assembly welding tool and the frame assembly welding method, through the linkage cooperation of multiple structures, can mechanically flip the welded side downward to knock off the welding slag after the welding of one side of the frame is completed, and can flip the unwelded side upward for welding, thereby reducing the labor intensity of workers and improving the welding efficiency of the frame assembly. In addition, the specification of Chinese utility model patent CN221640060U discloses a new type of universal welding device for forklift frames. In the utility model, under the action of a first drive motor, a second drive motor and a third drive motor, the welding gun is moved to a suitable position for welding, and then the rotating motor is started to drive the fixture to rotate, so that the turntable rotates together, so as to achieve the purpose of rotating the frame, perform multi-faceted welding, and improve work efficiency.

[0004] When the existing frame welding equipment is working, the rotation of the motor is used to drive the clamped frame parts to rotate, so as to achieve circular welding processing. However, in the actual operation process, in order to improve the welding efficiency, multi-point welding operations are required, but the welding operations of different welding positions are not the same, because a single rotation will affect the normal welding of other welding positions and thus reduce the welding efficiency. In addition, when welding steel pipes and square pipes, the welding points of the square pipes and steel pipes need to be manually aligned, resulting in limited welding efficiency. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a welding equipment that can take into account different welding operations at different welding positions when performing multi-point welding processing on the frame. In addition, it can also realize automatic alignment of steel pipes and square pipes to improve welding efficiency.

[0006] In order to solve the above problems, the present invention provides a forklift frame rapid welding tool, comprising two bases with depressions on the top, brackets located behind the depressions are installed on the tops of the two bases, guide rails are installed on the tops of the brackets, and a plurality of separation welding units are slidably installed inside the guide rails. The separation welding units include a hydraulic telescopic rod slidably connected to the inside of the guide rails, the output end of the hydraulic telescopic rod is detachably connected to a driving motor, the output end of the driving motor is connected to a shield, and a welding gun is installed on the top wall of the shield;

[0007] The inside of each depression is rotatably connected with a rotating gear ring, the bottom of the guide rail is connected with a support frame, and the surfaces of the support frame that are separated from each other are installed with rotating motors, and the rotating motor has two output ends, one of the output ends of the rotating motor is connected with a driving gear that meshes with the rotating gear ring, and a No. 1 electric extension rod is installed inside the rotating gear ring through a shaft sleeve;

[0008] A plurality of No. 3 electric extension rods are plugged into the inner wall of the rotating gear ring, and an adjustment unit for adjusting the docking state of the steel pipe and the square pipe is installed on the inner side of the rotating gear ring, and the adjustment unit includes a magnetic push ring, wherein the surface of the fixed end of one of the No. 3 electric extension rods is fixedly connected with an electromagnetic ring, and the magnetic push ring is slidably connected to the surface of the movable end of the No. 3 electric extension rod, and an inclined No. 2 electric extension rod is installed on the inner wall of the rotating gear ring.

[0009] In the above-mentioned forklift frame rapid welding tooling, a separate welding unit is used to provide separate processing for the welding device of the multi-station welding operation, so that the present application can simultaneously perform circular welding processing and linear welding processing, thereby improving welding efficiency. In addition, the adjustment unit can be used to realize automatic alignment of steel pipes and square pipes, thereby reducing the time required for manual alignment and splicing, thereby further improving welding efficiency.

[0010] As a further improvement of the present application, the part that is connected through the No. 1 electric extension rod and the rotating gear ring is the fixed end of the No. 1 electric extension rod, and the surface of the fixed end of the No. 1 electric extension rod is sleeved with the No. 1 gear. The other output end of the rotating motor is connected to a miniature electric extension rod, and the surface of the power end of the miniature electric extension rod is connected to the No. 2 gear that meshes with the No. 1 gear.

[0011] As a further improvement of the present application, a plurality of screw holes are provided on the surface of the protective cover, and the movable end of the No. 1 electric extension rod is provided with threads matching the screw holes.

[0012] As a further improvement of the present application, a plug-in slot is provided in the power end of the hydraulic telescopic rod, and an electromagnetic plug-in block matching the plug-in slot is installed on the top of the driving motor.

[0013] As a further improvement of the present application, when the No. 1 electric extension rod rotates to the bottom along with the rotating ring gear, the No. 1 electric extension rod is located above the recess.

[0014] As another improvement of the present application, the working steps of the adjustment unit are as follows:

[0015] S1. Use the No. 3 electric extension rod to fix the steel pipe, then start the electromagnetic ring to drive the magnetic push ring to leave the surface close to the steel pipe;

[0016] S2, overlap the end of the square tube on the surface of the movable end of the No. 3 electric extension rod installed with the electromagnetic ring in the rotating gear ring, so that the lower left end of the square tube is in contact with the surface of the steel tube and the end surface of the No. 3 electric extension rod overlapped with the square tube;

[0017] S3, the electromagnetic ring continues to start, and the magnetic push ring continues to approach the surface of the steel pipe. After pushing the inclined square pipe to fit the surface of the steel pipe, the No. 2 electric extension rod is started to squeeze and constrain the square pipe to complete the positioning;

[0018] S4. After the upper surface of the square tube and the steel tube are welded, the steel tube and the square tube are rotated by rotating the gear ring so that the unwelded surface faces upward and welding continues.

[0019] As another improvement of the present application, an arc-shaped groove is provided on the inner wall of the rotating gear ring, and the arc length of the arc-shaped groove is less than one-fourth of the circumference of the rotating gear ring itself, an electromagnetic block is installed on the top wall of the arc-shaped groove, the No. 2 electric extension rod is slidably connected to the inside of the arc-shaped groove, and the surface of the No. 2 electric extension rod located in the arc-shaped groove is coated with a magnetic coating that attracts the electromagnetic block.

[0020] As another improved supplement of the present application, it also includes an image collector, which is installed on one side of the base and is connected to the signal of the second electric extension rod.

[0021] To sum up, by using a separate welding unit, separate processing can be provided for the welding device of multi-station welding operations, so that the present application can simultaneously perform circular welding processing and linear welding processing, thereby improving welding efficiency. In addition, the adjustment unit can be used to achieve automatic alignment of steel pipes and square pipes, thereby reducing the time required for manual alignment and splicing, thereby further improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application;

[0023] Figure 2 This is a schematic diagram of the installation of a separation welding unit according to the first embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the installation of a rotating motor, a driving gear and a micro electric extension pole according to the first embodiment of the present application;

[0025] Figure 4This is a schematic diagram of the working state of the separation welding unit according to the first embodiment of the present application;

[0026] Figure 5 This is an installation diagram of the No. 2 electric extension rod, electromagnetic ring and magnetic push ring of the second embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the process of automatic alignment of square tubes and steel tubes according to the second embodiment of the present application;

[0028] Figure 7 This is a diagram showing the welding position of a square tube and a steel tube in a second embodiment of the present application;

[0029] Figure 8 This is a schematic diagram of the installation of the arc slot and the electromagnetic block according to the third embodiment of the present application;

[0030] Fig. 9 For this application Figure 8 A is an enlarged schematic diagram;

[0031] Fig.10 This is a schematic diagram of the moving state of the No. 2 electric extension pole in the third embodiment of the present application.

[0032] Description of the numbers in the figure:

[0033] 1. Base; 2. Guide rail; 3. Hydraulic telescopic rod; 4. Drive motor; 5. Protective cover; 51. Screw hole; 6. Welding gun; 7. No. 1 electric telescopic rod; 71. No. 1 gear; 8. Rotating motor; 81. Drive gear; 82. Micro electric telescopic rod; 83. No. 2 gear; 9. Rotating gear ring; 91. No. 2 electric telescopic rod; 92. Arc groove; 93. Electromagnetic block; 10. No. 3 electric telescopic rod; 11. Magnetic push ring; 12. Electromagnetic ring. DETAILED DESCRIPTION

[0034] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0035] The first implementation method:

[0036] Figure 1-Figure 3 A forklift frame quick welding tool is shown, comprising two bases 1 with depressions on the tops, brackets located behind the depressions are installed on the tops of the two bases 1, guide rails 2 are installed on the tops of the brackets, and a plurality of separation welding units are slidably installed inside the guide rails 2. The separation welding units include a hydraulic telescopic rod 3 slidably connected to the inside of the guide rails 2, a drive motor 4 is detachably connected to the output end of the hydraulic telescopic rod 3, a shield 5 is connected to the output end of the drive motor 4, and a welding gun 6 is installed on the top wall of the shield 5;

[0037] A rotating gear ring 9 is rotatably connected inside each recess, a support frame is connected to the bottom of the guide rail 2, and rotating motors 8 are installed on surfaces of the support frames that are away from each other, and the rotating motor 8 has two output ends, one of the output ends of the rotating motor 8 is connected to a driving gear 81 that meshes with the rotating gear ring 9, and a No. 1 electric extension rod 7 is installed inside the rotating gear ring 9 through a shaft sleeve;

[0038] A plurality of No. 3 electric extension rods 10 are inserted into the inner wall of the rotating gear ring 9. The portion where the No. 1 electric extension rod 7 is connected to the rotating gear ring 9 is the fixed end of the No. 1 electric extension rod 7. A No. 1 gear 71 is sleeved on the surface of the fixed end of the No. 1 electric extension rod 7. The other output end of the rotating motor 8 is connected to a miniature electric extension rod 82. The power end surface of the miniature electric extension rod 82 is connected to a No. 2 gear 83 which meshes with the No. 1 gear 71.

[0039] A plurality of screw holes 51 are provided on the surface of the protective cover 5 , and a movable end of the No. 1 electric extension rod 7 is provided with threads matching the screw holes 51 .

[0040] Specifically, when performing the corresponding frame welding process, the steel pipe is inserted into the interior of the rotating gear ring 9, and then the steel pipe is constrained and limited by the No. 3 electric extension rod 10 in the rotating gear ring 9, and then the corresponding welding process is performed by the separation welding unit. During welding, the hydraulic telescopic rod 3 is used for lifting and lowering adjustment, and the driving motor 4 is used for direction adjustment;

[0041] When performing multi-point synchronous welding (that is, the movement of multiple welding guns 6 during welding is unified into circular or linear mode), the rotating motor 8 is used to drive the driving gear 81 to rotate, which can drive the rotating gear ring 9 to rotate, and then drive the steel pipe in the constrained state to rotate, thereby realizing circular welding, or the linear movement of the guide rail 2 is used to drive the two welding guns 6 to move linearly in the same direction synchronously, thereby realizing the same multi-point welding operation and improving welding efficiency.

[0042] When performing asynchronous welding at multiple points (that is, the movement modes of multiple welding guns 6 are not uniform during welding, for example, the welding gun 6 on the left is circular movement welding, and the welding gun 6 on the right is linear movement welding), it is necessary to first start the No. 1 electric extension rod 7 on the right side, and drive the movable end of the No. 1 electric extension rod 7 on the right side to be plugged into the screw hole 51 on the surface of the right side shield 5 (because at this time the shield 5 is adjusted by the hydraulic telescopic rod 3 and the drive motor 4, and the screw hole 51 and the movable end of the No. 1 electric extension rod 7 are in a coaxial state, which is convenient for plugging), and then start the other output end of the rotating motor 8 to drive the hydraulic telescopic rod 3 and the drive motor 4 in the separation welding unit on the right to be separated. At this time, the meshed gear No. 1 71 and the No. 2 gear 83 rotate, driving the No. 1 electric extension rod 7 on the right to rotate, so that the movable end of the No. 1 electric extension rod 7 on the right is threadedly connected to the shield 5, and then the micro electric extension rod 82 is started to release the meshing state of the No. 1 gear 71 and the No. 2 gear 83 on the right. Then, the rotating motor 8, the driving gear 81 and the rotating gear ring 9 are used to drive the steel pipe to rotate. At this time, the welding gun 6 on the left can perform circular welding on the surface of the steel pipe, and the welding gun 6 on the right is constrained and stabilized on the surface of the steel pipe by the shield 5 and the No. 1 electric extension rod 7, and can drive the welding gun 6 on the right to perform linear welding (such as Figure 4 shown).

[0043] A plug-in slot is provided in the power end of the hydraulic telescopic rod 3, and an electromagnetic plug-in block matching the plug-in slot is installed on the top of the driving motor 4.

[0044] Specifically, the welding gun 6 and the hydraulic telescopic rod 3 can be detachably separated by energizing and de-energizing the electromagnetic plug block.

[0045] When the No. 1 electric extension rod 7 rotates to the bottom along with the rotating gear ring 9, the No. 1 electric extension rod 7 is located above the depression.

[0046] Specifically, when the rotating gear ring 9 rotates, even if the No. 1 electric extension rod 7 reaches the recessed position, it will not be blocked.

[0047] The second implementation method:

[0048] Figure 2 and Figure 5 It is shown that an adjustment unit for adjusting the docking state of the steel pipe and the square pipe is installed on the inner side of the rotating gear ring 9, and the adjustment unit includes a magnetic push ring 11, wherein the surface of the fixed end of one No. 3 electric extension rod 10 is fixedly connected with an electromagnetic ring 12, and the magnetic push ring 11 is slidably connected to the surface of the movable end of the No. 3 electric extension rod 10, and the inner wall of the rotating gear ring 9 is installed with an inclined No. 2 electric extension rod 91.

[0049] The working steps of the adjustment unit are as follows:

[0050] S1. Use the No. 3 electric extension rod 10 to fix the steel pipe, then start the electromagnetic ring 12 to drive the magnetic push ring 11 to leave the surface close to the steel pipe;

[0051] S2, overlap the end of the square tube on the surface of the movable end of the No. 3 electric extension rod 10 installed with the electromagnetic ring 12 in the rotating gear ring 9, so that the lower left end of the square tube is in contact with the surface of the steel pipe and the end surface of the No. 3 electric extension rod 10 overlapped with the square tube;

[0052] S3, the electromagnetic ring 12 continues to start, and the magnetic push ring 11 continues to approach the surface of the steel pipe, and after pushing the inclined square pipe to fit the surface of the steel pipe, the second electric extension rod 91 is started to squeeze and constrain the square pipe to complete the positioning;

[0053] S4. After the upper surfaces of the square tube and the steel tube are welded, the steel tube and the square tube are driven to rotate by rotating the gear ring 9 so that the unwelded surface faces upward and welding is continued.

[0054] It also includes an image collector, which is installed on one side of the base 1 and is connected to the second electric extension rod 91 by signal.

[0055] Different from the first embodiment, this embodiment is mainly aimed at the automated splicing and alignment of square tubes and steel tubes, and the image collector is not drawn in this embodiment.

[0056] Specifically, when welding the square tube and the steel tube, the surface of the square tube needs to be processed into an arc shape that fits the surface of the steel tube, and then welding can be performed.

[0057] Before welding, according to the cross-sectional size of the square tube, a repulsive force is generated between the electromagnetic ring 12 and the magnetic push ring 11, driving the magnetic push ring 11 to move a certain distance, so that the magnetic push ring 11 is located at the center right position of the square tube in the horizontal projection state, and then the end of the square tube is overlapped on the top of the No. 2 electric extension rod 91, so that the square tube is placed at an angle, and the lower left end of the square tube is in contact with the surface of the steel tube and the surface of the movable end of the No. 3 electric extension rod 10, which serves as the center of the subsequent swing of the square tube, and then the electromagnetic ring 12 is started again to drive the magnetic push ring 11 to move in the direction of the steel tube, and then the square tube is lifted around the center of the circle by prying until the arc surface of the square tube fits with the surface of the steel tube (this state can be photographed and viewed by an image collector), and a start signal is sent to the No. 2 electric extension rod 91 through the image collector, so that the No. 2 electric extension rod 91 squeezes the square tube to strengthen the connection between the square tube and the steel tube (such as Figure 6 shown).

[0058] Then, welding is performed using a welding gun 6. After the weld is formed, the electromagnetic ring 12 generates an attraction effect with the magnetic push ring 11, so that the magnetic push ring 11 is adsorbed and reset to the surface of the electromagnetic ring 12. The rotating motor 8 and the rotating gear ring 9 can drive the square tube and the steel tube in the clamping constraint state to rotate. After the surface is changed, the weld that has been formed faces downward, and the welding operation is performed on the welding position of the square tube and the steel tube that was originally at the lower position (such as Figure 7 shown).

[0059] The third implementation method:

[0060] Figure 8-Figure 9 It is shown that the inner wall of the rotating gear ring 9 is provided with an arc groove 92, and the arc length of the arc groove 92 is less than one-fourth of the circumference of the rotating gear ring 9 itself, an electromagnetic block 93 is installed on the top wall of the arc groove 92, and the No. 2 electric extension rod 91 is slidably connected to the inside of the arc groove 92, and the surface of the part of the No. 2 electric extension rod 91 located in the arc groove 92 is coated with a magnetic coating that attracts the electromagnetic block 93.

[0061] Different from the second embodiment, according to the different sizes of the square tubes, the clamping and restraining effect of the fixed-angle No. 2 electric extension rod 91 is limited, so an adjustable-angle No. 2 electric extension rod 91 is designed.

[0062] Specifically, the electromagnetic block 93 is utilized, and the magnetic attraction between the electromagnetic block 93 and the magnetic attraction coating is utilized to drive the second electric extension rod 91 to move upward and adjust the angle, thereby achieving better clamping and restraining treatment for square tubes of different sizes.

[0063] In summary, the present application utilizes a separate welding unit to provide separate processing for a welding device for multi-station welding operations, so that the present application can simultaneously perform circular welding processing and linear welding processing, thereby improving welding efficiency. In addition, the adjustment unit can be used to achieve automatic alignment of steel pipes and square pipes, thereby reducing the time required for manual alignment and splicing, thereby further improving welding efficiency (such as Fig.10 shown).

[0064] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A forklift frame quick welding tool, comprising two bases (1) each having a depression on the top, a bracket located behind the depression installed on the top of each of the two bases (1), a guide rail (2) installed on the top of the bracket, and a plurality of separate welding units slidably installed inside the guide rail (2), characterized in that: The separation welding unit comprises a hydraulic telescopic rod (3) slidably connected to the inside of the guide rail (2); the output end of the hydraulic telescopic rod (3) is detachably connected to a drive motor (4); the output end of the drive motor (4) is connected to a shield (5); and a welding gun (6) is installed on the top wall of the shield (5); A rotating gear ring (9) is rotatably connected inside each of the recesses, a support frame is connected to the bottom of the guide rail (2), rotating motors (8) are installed on surfaces of the support frames that are away from each other, and the rotating motor (8) has two output ends, one of the output ends of the rotating motor (8) is connected to a driving gear (81) that meshes with the rotating gear ring (9), and a No. 1 electric extension rod (7) is installed inside the rotating gear ring (9) through a shaft sleeve; A plurality of No. 3 electric extension rods (10) are inserted into the inner wall of the rotating gear ring (9), and an adjustment unit for adjusting the docking state between the steel pipe and the square pipe is installed on the inner side of the rotating gear ring (9), and the adjustment unit includes a magnetic push ring (11), wherein the surface of the fixed end of one of the No. 3 electric extension rods (10) is fixedly connected with an electromagnetic ring (12), and the magnetic push ring (11) is slidably connected to the surface of the movable end of the No. 3 electric extension rod (10), and the inner wall of the rotating gear ring (9) is installed with an inclined No. 2 electric extension rod (91).

2. The forklift frame rapid welding tool according to claim 1, characterized in that: The portion of the No. 1 electric extension rod (7) that is connected to the rotating gear ring (9) is the fixed end of the No. 1 electric extension rod (7), and the surface of the fixed end of the No. 1 electric extension rod (7) is sleeved with a No. 1 gear (71), and the other output end of the rotating motor (8) is connected to a micro electric extension rod (82), and the surface of the power end of the micro electric extension rod (82) is connected to a No. 2 gear (83) that meshes with the No. 1 gear (71).

3. The forklift frame rapid welding tool according to claim 2, characterized in that: The surface of the protective cover (5) is provided with a plurality of screw holes (51), and the movable end of the No. 1 electric extension rod (7) is provided with threads matching the screw holes (51).

4. The forklift frame rapid welding tool according to claim 3, characterized in that: A plug-in slot is provided in the power end of the hydraulic telescopic rod (3), and an electromagnetic plug-in block matching the plug-in slot is installed on the top of the drive motor (4).

5. The forklift frame rapid welding tool according to claim 4, characterized in that: When the first electric extension rod (7) rotates to the bottom end following the rotating gear ring (9), the first electric extension rod (7) is located above the depression.

6. The forklift frame rapid welding tool according to claim 5, characterized in that: The working steps of the adjustment unit are as follows: S1. Use the No. 3 electric extension rod (10) to fix the steel pipe, then start the electromagnetic ring (12) to drive the magnetic push ring (11) to leave the surface close to the steel pipe; S2, overlap the end of the square tube on the surface of the movable end of the third electric extension rod (10) installed with the electromagnetic ring (12) in the rotating gear ring (9), so that the lower left end of the square tube is in contact with the surface of the steel tube and the end surface of the third electric extension rod (10) overlapped with the square tube; S3, the electromagnetic ring (12) continues to start, the magnetic push ring (11) continues to approach the surface of the steel pipe, and after pushing the inclined square pipe to fit the surface of the steel pipe, the second electric extension rod (91) is started to squeeze and constrain the square pipe to complete the positioning; S4. After the upper surfaces of the square tube and the steel tube are welded, the steel tube and the square tube are driven to rotate by the rotating gear ring (9) so that the unwelded surface faces upwards and welding is continued.

7. The forklift frame rapid welding tool according to claim 1, characterized in that: The inner wall of the rotating gear ring (9) is provided with an arc-shaped groove (92), and the arc length of the arc-shaped groove (92) is less than one-fourth of the circumference of the rotating gear ring (9), and the top wall of the arc-shaped groove (92) is installed with an electromagnetic block (93), and the second electric extension rod (91) is slidably connected to the inside of the arc-shaped groove (92), and the surface of the part of the second electric extension rod (91) located in the arc-shaped groove (92) is coated with a magnetic coating that attracts the electromagnetic block (93).

8. The forklift frame rapid welding tool according to claim 1, characterized in that: It also includes an image collector, which is installed on one side of the base (1) and is connected to the second electric extension rod (91) by signal.

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