A welding lifting platform and its manufacturing and installation method

Abstract

The present invention discloses a welding lifting platform and a method for manufacturing and installing the same, comprising a column, a roller assembly, a cantilever beam, and a welding platform. A first gap is provided between the side wall of the welding platform and the side wall of the column. A lifting lug is provided on each side of the welding platform close to the column, and the lifting lug is connected to a pulley disposed above the column via a chain. The roller assembly comprises a pair of side connecting plates, a pair of connecting shafts disposed between the pair of side connecting plates, and rollers are respectively sleeved on the pair of connecting shafts. The pair of side connecting plates are obliquely disposed on both sides of the column, and the rollers are disposed on the other two sides of the column and abut against the outer side wall of the column. The welding lifting platform has a simple structure, is easy to manufacture and install, has a low manufacturing cost, and has good connection strength and stability. It can be used to lift personnel or tools during welding, so as to perform welding operations on workpieces of different sizes and positions.

Description

Technical Field

[0001] The present invention relates to the technical field of welding auxiliary tooling, and in particular to a welding lifting platform and a manufacturing and installation method thereof. Background Art

[0002] The welding of longitudinal seams or welds of large steel structures requires the use of a welding platform. The welding platform needs to have lifting and moving functions to facilitate flexible adjustment of the welding machine position.

[0003] A Chinese utility model patent (publication number: CN202062170U) discloses a four-column gantry automatic welding machine, which includes a walking base, door-shaped columns, connecting beams, a lifting platform, a platform anti-fall safety mechanism, a welding head cross slide, and a control system. The utility model has a four-column gantry structure with high structural rigidity and good stability, and can be used for welding large-diameter containers. Although it has good flexibility, the overall structure is relatively complex, the production cost is high, and the installation difficulty is also greater.

[0004] There are also lifting platforms that use a cantilever support connection method. The overall structure is relatively simple, but the lifting platform requires more components and connectors to be connected, and the installation and construction are also more complicated. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding lifting platform and a manufacturing and installation method thereof in response to the problems existing in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The lifting mechanism is a pair of fixedly mounted on two guide wheels, and the guiding planes of the two guide wheels are connected with the guiding plane of the two guide wheels respectively.

[0008] The welding lifting platform has a simple structure, is easy to manufacture and install, has a low manufacturing cost, and has good connection strength and stability. It can be used to lift personnel or tools during welding, so as to perform welding operations on workpieces of different sizes and positions.

[0009] The welding lifting platform moves up and down on the column through the roller assembly to drive the welding platform to move up and down. The roller assembly uses a pair of rollers that are staggered up and down on both sides of the column to form a lever-type rolling support effect, which can provide a rolling effect while also improving the side support effect. The arrangement of a pair of side connecting plates is used to connect and install the rollers and also serves as a component for connecting the cantilever beam. The cantilever beam and the welding platform arranged above it can further apply downward pressure, so that the side connecting plates are further tilted and stressed, so that the rollers are closely abutted against the column, and can actually form a hovering effect when in a static state.

[0010] The setting of the first gap and the second gap makes it possible for only the roller of the entire assembly to contact the column, and other components do not directly contact the column; the setting of the second gap prevents the side connecting plate from contacting the column, so as to avoid additional friction during the lifting process; the setting of the first gap also has the function of adjusting and releasing the tightness of the contact between the roller and the column. In the horizontal static state, the roller is tightly against the column, and the force and friction are also large, which can form an upper and lower clamping effect, and the roller will not roll easily; when an external force is applied, such as pulling the chain, the welding platform is subjected to an upward pull. Since the lifting force is only applied on the side close to the column, the welding platform will be slightly closer to the column, that is, the spacing of the first gap becomes smaller. At this time, the large pressure of the roller against the column will be reduced a lot. Under the action of the lifting force, the roller can roll well again, thereby completing the lifting adjustment.

[0011] That is to say, through the above technical solution, the relative movement between the roller and the column does not require the provision of various auxiliary movement measures such as slide grooves, limiters, movable connectors, etc., nor does it require the provision of other connectors to connect the main structure, which greatly simplifies the installation of the connection structure; and no grooving or punching operations are required for the column.

[0012] The setting of the pulley facilitates the hanging and pulling of the chain. The chain between the pulley and the lifting lug does not need to be completely vertical. A slight tilting effect will be better because such lifting will slightly change the angle of the welding platform to release the roller.

[0013] Furthermore, the column is a rectangular hollow pole, and the upper and lower ends of the column are respectively provided with a top plate and a bottom plate, the bottom plate is connected to the ground foundation through anchors, and a crossbeam is connected above the top plate, which can improve the connection stability of a pair of the columns.

[0014] Furthermore, a connecting rod for fixed installation is provided above the column, and the connecting rod is arranged on the side facing away from the welding platform. The end face and / or side face of the connecting rod is provided with a mounting plate, and the mounting plate is used to connect to the building wall, and together with the base plate, forms an upper and lower fixed support structure, which can enable the column to maintain a stable vertical state.

[0015] Furthermore, the axial length of the roller is greater than the sum of the spacings between the pair of second gaps, and the spacing between the first gaps is smaller than the spacing between the second gaps. The second gaps on both sides of the column are generally arranged at equal intervals, so that the force is relatively balanced; even if the column deviates, the roller will not lose contact with the column.

[0016] Furthermore, the cantilever beam is arranged near the roller above, and its horizontal height is lower than the horizontal height of the connecting shaft above. With this arrangement, after the front end of the cantilever beam is subjected to downward pressure, a pair of rollers can both apply force toward the column; the ends of the cantilever beams on both sides of the same column are also connected to short beams, and the short beams can enhance the connection strength and stability of a pair of cantilever beams.

[0017] Furthermore, the retractable and unretractable driving device is a winch, at least one of the chains is connected to the winch, the end of the chain is provided with a hook, and the hook is hooked on the lifting lug. The winch can be set on the ground or on the building structure.

[0018] Furthermore, the side connecting plate and the cantilever beam are respectively channel steels, and the welding platform is a patterned steel plate. These materials are easy to obtain in a steel structure workshop, and scraps can be used to reduce material costs. The side connecting plate and the cantilever beam, and the cantilever beam and the welding platform are respectively welded and fixed, and a slide rail is also welded above the welding platform, and the slide rail is used to install a welding machine.

[0019] The welding platform is mainly used to place the welding machine, which facilitates the movement of the welding machine so as to weld workpieces of different sizes and positions. People can also stand on the welding platform. During the welding process, in order to ensure safety and stability, the welding platform can also be pulled by a chain.

[0020] Furthermore, an elastic limit block is provided near the bottom of the column, and the elastic limit block is used for limiting the support of the side connecting plate to prevent the side connecting plate from touching the bottom during the descent; a number of movable elastic buffer components are also provided below the cantilever beam, and the elastic buffer component includes a support seat arranged on the pad block, a bearing sleeve is provided in the support seat, a spring is provided between the bearing sleeve and the support seat, a support platform is provided above the bearing sleeve, and an elastic pad is provided on the support platform.

[0021] The setting of the elastic buffer component can, on the one hand, support the cantilever beam during the installation process to facilitate the installation operation; on the other hand, it can also play a limiting and protective role, supporting the cantilever beam during the descent of the welding platform to prevent it from exceeding the limit descent; the setting of the elastic buffer component is relatively flexible, and the number and position can be placed according to actual conditions.

[0022] A method for manufacturing and installing a welding lifting platform, the method comprising the following steps:

[0023] (1) preparing materials and prefabricating the columns, the cantilever beams, the side connecting plates, the connecting shafts, the rollers, and the welding platform;

[0024] (2) Making the roller assembly, sleeve the roller on the connecting shaft, and fix the two ends of the connecting shaft to the side connecting plates respectively. Install the rollers on the two ends of a pair of side connecting plates respectively to form the roller assembly, and weld the cantilever beams on the two outer sides of the roller assembly respectively. The cantilever beams and the side connecting plates intersect to form an angle;

[0025] (3) Fixing the columns, welding a base plate to the bottom of the columns, fixing the base plate to the ground foundation through a plurality of anchors, and setting a pair of the columns in parallel and spaced apart;

[0026] (4) Installing the roller assembly, and sleeve the roller assembly connected to the cantilever beam in (2) onto the column from above. When sleeved, the cantilever beam is tilted so that the roller assembly is sleeved onto the column horizontally. Then, the cantilever beam is rotated to make it horizontal. At this time, a pair of rollers on the connecting shaft just abut against both sides of the column. The rollers roll downward along the column, so that the cantilever beam is lowered to an operable height and temporarily supported by a number of elastic buffer assemblies.

[0027] (5) Installing the welding platform, placing the welding platform horizontally on the cantilever beam, adjusting a first gap between the welding platform and the column, and then welding and fixing the welding platform;

[0028] (6) Installing the chain: first, weld the lifting lug on the welding platform, set the pulley above the column, then connect one end of the chain to the lifting lug, and then connect the other end of the chain to the retracting and extending drive device after winding around the pulley;

[0029] (7) Top plates are welded to the ends of a pair of columns, and cross beams are welded to the top plates; then connecting rods are welded to the sides of a pair of columns, and mounting plates are welded to the ends of the connecting rods. The mounting plates are fixedly connected to the building wall, and the installation of the lifting platform is completed.

[0030] Furthermore, in step (2), through geometric simulation and calculation, when the cantilever beam is set horizontally and the pair of rollers just abut the outer side wall of the column, the angle between the cantilever beam and the side connecting plate is calculated, and then the cantilever beam is welded and fixed according to the angle data and the connection position; in the process of installing the roller assembly, when the cantilever beam is adjusted to a horizontal state, the roller assembly is also moved to maintain a second gap between the side connecting plate and the column; before using the welding platform, two slide rails are installed in parallel on the welding platform, and then the welding machine is set on the pair of slide rails, and the welding gun of the welding machine extends downward from the front of the welding platform.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The welding lifting platform has a simple structure, is easy to manufacture and install, has a low manufacturing cost, and has good connection strength and stability. It can be used for lifting and lowering personnel or tools during welding, so as to perform welding operations on workpieces of different sizes and positions; 2. The welding lifting platform uses a pair of rollers arranged on both sides of the column and staggered up and down to form a lever-type rolling support effect, which can provide a rolling effect while also improving the side support effect; 3. The cantilever beam and the welding platform arranged above it can further apply downward pressure, so that the side connecting plate is further tilted and stressed, so that the rollers are tightly against the column, so that it can form a hovering effect when it is in a static state; 4. The first The setting of the first gap and the second gap makes it possible for only the roller of the entire assembly to contact the column, and other components do not directly contact the column; the setting of the first gap also has the function of adjusting and releasing the tightness of the contact between the roller and the column; 5. The relative movement between the roller and the column does not require the setting of various auxiliary movement measures such as slide grooves, limiters, and movable connectors, nor does it require the setting of other connectors to connect the main structure, which greatly simplifies the installation and connection structure; 6. The setting of the pulley facilitates the hanging and pulling of the chain; the setting of the elastic buffer component can support the cantilever beam during the installation process, facilitate the installation operation, and can also play a role of limiting and protecting, supporting the cantilever beam during the descent of the welding platform to prevent it from exceeding the limit and falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic side structural diagram of a welding lifting platform of the present invention;

[0033] Figure 2 This is a schematic diagram of the top view of the welding platform of a welding lifting platform of the present invention;

[0034] Figure 3 This is a schematic diagram of the back structure of the column of a welding lifting platform of the present invention;

[0035] Figure 4 This is a schematic diagram of the top view of the roller assembly of a welding lifting platform of the present invention;

[0036] Figure 5 This is a schematic diagram of the cooperation between the rollers and the columns of a welding lifting platform of the present invention;

[0037] Figure 6 This is a schematic diagram of the process of sleeve-mounting the roller assembly of the present invention on the column;

[0038] Figure 7 It is a structural schematic diagram of the elastic buffer assembly of the present invention;

[0039] Figure 8 This is a schematic diagram of another connection structure of a connecting rod of a welding lifting platform of the present invention;

[0040] In the figure: 1. Column; 2. Roller assembly; 201. Side connecting plate; 202. Connecting shaft; 203. Roller; 3. Cantilever beam; 4. Short beam; 5. Welding platform; 6. First gap; 7. Second gap; 8. Lifting lug; 9. Pulley; 10. Bottom plate; 11. Top plate; 12. Crossbeam; 13. Connecting rod; 14. Mounting plate; 15. Slide rail; 16. Welding machine; 17. Elastic limit block; 18. Elastic buffer assembly; 1801. Pad; 1802. Support seat; 1803. Bearing sleeve; 1804. Spring; 1805. Support platform; 1806. Elastic pad; 19. Chain; 20. Winch. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," etc., etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Example 1:

[0044] like Figures 1 to 5 As shown, a welding lifting platform comprises a pair of columns 1, wherein the columns 1 are provided with roller assemblies 2 that can be raised and lowered, and a pair of cantilever beams 3 are fixedly connected to the outer sides of the roller assemblies 2, wherein the cantilever beams 3 are arranged parallel to each other and at the same height and are all arranged perpendicular to the columns 1, and a welding platform 5 is provided on the cantilever beams 3, and a first gap 6 is provided between the side wall of the welding platform 5 and the side wall of the column 1; the welding platform 5 is provided with a lifting ear 8 on the side close to the column 1, and the lifting ear 8 is connected to the pulley 9 arranged above the column 1 through a chain 19. The other end of the chain 19 is connected to a retracting and extending drive device; the roller assembly 2 includes a pair of side connecting plates 201, a pair of connecting shafts 202 are provided between the pair of side connecting plates 201, and rollers 203 are respectively sleeved on the pair of connecting shafts 202. The pair of side connecting plates 201 are tilted and arranged on both sides of the column 1 and maintain a second gap 7, and the rollers 203 in the upper and lower positions are respectively arranged on the other two sides of the column 1, and the rollers 203 respectively abut the outer side walls of the column 1, and the outer sides of the side connecting plates 201 are fixedly connected to the cantilever beam 3.

[0045] The welding lifting platform has a simple structure, is easy to manufacture and install, has a low manufacturing cost, and has good connection strength and stability. It can be used to lift personnel or tools during welding, so as to perform welding operations on workpieces of different sizes and positions.

[0046] The welding lifting platform moves up and down on the column 1 through the roller assembly 2 to drive the welding platform 5 to move up and down. The roller assembly 2 uses rollers 203 that are staggered up and down on both sides of the column 1 to form a lever-type rolling support effect, which can provide a rolling effect while also improving the side support effect. A pair of side connecting plates 201 are provided, which are used to connect and install the rollers 203 and also serve as components for connecting the cantilever beam 3. The cantilever beam 3 and the welding platform 5 provided above it can further apply downward pressure, so that the side connecting plate 201 is further tilted and stressed, so that the rollers 203 are tightly against the column 1, and can actually form a hovering effect when it is stationary.

[0047] The setting of the first gap 6 and the second gap 7 makes it possible for only the roller 203 of the entire assembly to contact the column 1, and other components do not directly contact the column; the setting of the second gap 7 prevents the side connecting plate 201 from contacting the column 1, so as to avoid additional friction during the lifting process; the setting of the first gap 6 also has the function of adjusting and releasing the tightness of the contact between the roller 203 and the column 1. In the horizontal static state, the roller 203 is tightly against the column, with greater force and friction, which can form an upper and lower clamping effect, and the roller 203 will not roll easily; when an external force is applied, such as pulling the chain 19, the welding platform 5 is subjected to an upward pulling force. Since the lifting force is only applied on the side close to the column, the welding platform 5 will move slightly closer to the column 1 and the far end will slightly tilt, that is, the spacing of the first gap 6 becomes smaller. At this time, the large pressure of the roller 203 against the column 1 will be greatly reduced. Under the action of the lifting force, the roller 203 can roll well again, thereby completing the lifting adjustment.

[0048] That is to say, through the above technical solution, the relative movement between the roller 203 and the column 1 does not require the provision of various auxiliary movement measures such as slide grooves, limiters, movable connectors, etc., nor does it require the provision of other connectors to connect the main structure, which greatly simplifies the installation and connection structure; and no grooving or punching operations are required for the column.

[0049] The setting of the pulley 9 facilitates the hanging and pulling of the chain 19. The chain between the pulley 9 and the lifting lug 8 does not need to be completely vertical. A slight tilting effect will be better because such lifting will slightly change the angle of the welding platform to release the roller.

[0050] Furthermore, the column 1 is a rectangular hollow pole, and the upper and lower ends of the column 1 are respectively provided with a top plate 11 and a bottom plate 10. The bottom plate 10 is connected to the ground foundation through anchors, and a cross beam 12 is connected above the top plate 11, which can improve the connection stability of a pair of columns 1.

[0051] Furthermore, a connecting rod 13 for fixed installation is provided above the column 1. The connecting rod 13 is arranged on the side facing away from the welding platform 5. The end face of the connecting rod 13 is provided with a mounting plate 14. The mounting plate 14 is used to connect to the building wall and form an upper and lower fixed support structure together with the base plate 10, which can enable the column 1 to maintain a stable vertical state.

[0052] Furthermore, the axial length of the roller 203 is greater than the sum of the spacings of the pair of second gaps 7, and the spacing of the first gap 6 is smaller than the spacing of the second gaps 7. The second gaps 7 on both sides of the column 1 are generally arranged at equal intervals, so that the force is relatively balanced; even if there is a deviation, the roller 203 will not lose contact with the column 1.

[0053] Furthermore, the cantilever beam 3 is arranged near the roller above, and its horizontal height is lower than the horizontal height of the connecting shaft above. With this arrangement, after the front end of the cantilever beam 3 is subjected to downward pressure, the upper and lower pairs of rollers 203 can both apply force toward the column 1; the ends of the cantilever beam 3 on both sides of the same column 1 are also connected to short beams 4, and the short beams 4 can enhance the connection strength and stability of a pair of cantilever beams 3.

[0054] Furthermore, the retractable driving device is a winch 20, at least one chain 19 is connected to the winch 20, and a hook is provided at the end of the chain 19, and the hook is hooked on the lifting lug 8. The winch 20 can be set on the ground.

[0055] Furthermore, the side connecting plate 201 and the cantilever beam 3 are channel steels respectively, and the welding platform 5 is a patterned steel plate. These materials are easy to obtain in a steel structure workshop, and scraps can be used to reduce material costs. The side connecting plate 201 and the cantilever beam 3, and the cantilever beam 3 and the welding platform 5 are welded and fixed respectively. A slide rail 15 is also welded above the welding platform 5, and the slide rail 15 is used to install a welding machine 16.

[0056] The welding platform 5 is mainly used to place the welding machine 16, which facilitates the movement of the welding machine so as to weld workpieces of different sizes and positions. People can also stand on the welding platform 5. During the welding process, in order to ensure safety and stability, the welding platform can also be pulled by a chain.

[0057] Furthermore, an elastic limit block 17 is provided near the bottom of the column 1, and the elastic limit block 17 is used for limiting the support of the side connecting plate 201 to prevent the side connecting plate 201 from touching the bottom during the descent process; a number of movable elastic buffer components 18 are also provided below the cantilever beam 3.

[0058] The setting of the elastic buffer component 18 can, on the one hand, support the cantilever beam 3 during the installation process to facilitate the installation operation; on the other hand, it can also play a limiting and protective role, supporting the cantilever beam 3 during the descent of the welding platform 5 to prevent it from exceeding the limit descent; the setting of the elastic buffer component 18 is relatively flexible, and the number and position can be placed according to actual conditions.

[0059] Example 2:

[0060] A method for manufacturing and installing a welding lifting platform, the method comprising the following steps:

[0061] (1) Prepare materials, prefabricate the column 1, the cantilever beam 3, the side connecting plate 201, the connecting shaft 202, the roller 203 and the welding platform 5, and cut them into the size to be used according to the drawing size;

[0062] (2) Manufacturing the roller assembly 2, sleeve the roller 203 onto the connecting shaft 202, and fix the two ends of the connecting shaft 202 to the side connecting plates 201, respectively. Install the rollers 203 at both ends of a pair of side connecting plates 201 to form the roller assembly 2, and weld the cantilever beams 3 to the two outer sides of the roller assembly 2, respectively. The cantilever beams 3 and the side connecting plates 201 intersect to form an angle;

[0063] (3) Fixing the column 1, welding a base plate 10 to the bottom of the column 1, fixing the base plate 10 to the ground foundation through a plurality of anchors, and setting a pair of the columns 1 in parallel and spaced apart;

[0064] (4) Install the roller assembly 2, and sleeve the roller assembly 2 connected with the cantilever beam 3 in (2) onto the column 1 from above. When sleeved, the cantilever beam 3 can be tilted, as shown in FIG. Figure 6 As shown, the roller assembly 2 is horizontally mounted on the column 1. Since the linear distance between the rollers on both sides is larger than the cross-sectional size of the column, it is convenient to mount the rollers. Then, the cantilever beam 3 is rotated to make it horizontal. At this time, the rollers 203 just abut against both sides of the column 1. The rollers 203 roll downward along the column 1, so that the cantilever beam 3 is lowered to an operable height (not exceeding 1m) and temporarily supported by a plurality of elastic buffer assemblies 18.

[0065] (5) Installing the welding platform 5, placing the welding platform 5 horizontally on the cantilever beam 3, adjusting the first gap 6 between the welding platform 5 and the column 1, and then welding and fixing the welding platform 5;

[0066] (6) Installing the chain 19: First, weld the lifting lug 8 on the welding platform 5, set the pulley 9 above the column 1, and then connect one end of the chain 19 to the lifting lug 8, and then connect the other end of the chain 19 to the retracting and extending drive device after winding around the pulley;

[0067] (7) Top plates 11 are welded to the ends of a pair of columns 1, and cross beams 12 are welded to the top plates 11; then connecting rods 13 are welded to the sides of a pair of columns 1, and mounting plates 14 are welded to the ends of the connecting rods 13. The mounting plates 14 are fixedly connected to the building wall, thereby completing the installation of the lifting platform.

[0068] Furthermore, in step (2), through geometric simulation and calculation, when the roller 203 is in the horizontal state of the cantilever beam 3 and just abuts the outer wall of the column 1, the angle between the cantilever beam 3 and the side connecting plate 201 is calculated, and then the cantilever beam 3 is welded and fixed according to the angle data and the connection position; in the process of sleeve-mounting the roller assembly 2, when the cantilever beam 3 is adjusted to the horizontal state, the roller assembly 2 is also moved so that the second gap is maintained between the side connecting plate 201 and the column 1; before using the welding platform 5, two slide rails 15 (strip ribs) are welded in parallel on the welding platform 5, and then the walking wheels of the welding machine 16 are set on a pair of the slide rails 15, and the welding gun of the welding machine 16 extends downward from the front of the welding platform 5.

[0069] Compared with the installation method of the traditional cantilever beam, the manufacturing and installation method of the welding lifting platform is simpler and more convenient to operate. The overall strength and stability are also guaranteed after connection. The roller assembly can rely on friction to form a hovering effect, and can also release a larger friction force to facilitate lifting and lowering movements.

[0070] Example 3:

[0071] This embodiment provides a structure of an elastic buffer component.

[0072] like Figure 7 As shown, the elastic buffer assembly 18 includes a support seat 1802 arranged on a pad 1801, a bearing sleeve 1803 is provided inside the support seat 1802, a spring 1804 is provided between the bearing sleeve 1803 and the support seat 1802, a support platform 1805 is provided above the bearing sleeve 1803, and an elastic pad 1806 is provided on the support platform 1805.

[0073] The support seat 1802 has a pair of semi-arc-shaped guide side walls, and the pair of arc-shaped side walls of the bearing sleeve 1803 can move up and down on the inner side of the guide side walls; the middle part of the support seat 1802 and the lower middle part of the support platform 1805 are both provided with spring seats to connect and install the spring 1804. Under the action of the elastic pad 1806 and the spring 1804, the cantilever beam 3 can be better supported to prevent the cantilever beam 3 from falling beyond the limit.

[0074] Example 4:

[0075] This embodiment provides another installation method of the connecting rod.

[0076] like Figure 8 As shown, the end face or side face of the connecting rod 13 is provided with a mounting plate 14, and the mounting plate 14 is used to connect to the building wall. For the connecting rod 13 close to the side wall or side column, the mounting plate 14 provided on the side can be used for connection and fixing operations.

[0077] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A welding lifting platform, characterized in that: The lifting mechanism is a pair of fixedly mounted on two guide wheels, and the guiding planks are connected along the longitudinal direction of the lifting link to the upper end of the lifting link, and the guiding planks are connected along the longitudinal direction of the lifting link to the upper end of the lifting link. A connecting rod for fixed installation is also provided above the column, and the connecting rod is arranged on the side facing away from the welding platform. The end face and / or side face of the connecting rod is provided with a mounting plate, and the mounting plate is used to connect to the building wall. A slide rail is also welded above the welding platform, and the slide rail is used to install the welding machine. The axial length of the roller is greater than the sum of the spacings between a pair of the second gaps, and the spacing between the first gaps is smaller than the spacing between the second gaps.

2. The welding lifting platform according to claim 1, characterized in that: The column is a rectangular hollow pole, and the upper and lower ends of the column are respectively provided with a top plate and a bottom plate, the bottom plate is connected to the ground foundation through an anchor, and a crossbeam is connected above the top plate.

3. The welding lifting platform according to claim 1, characterized in that: The cantilever beam is arranged near the upper roller, and its horizontal height is lower than the horizontal height of the upper connecting shaft; the ends of the cantilever beams on both sides of the same column are also connected with short beams.

4. The welding lifting platform according to claim 1, characterized in that: The retractable driving device is a winch, at least one chain is connected to the winch, and a hook is provided at the end of the chain, and the hook is hooked on the lifting ear.

5. The welding lifting platform according to claim 1, characterized in that: The side connecting plate and the cantilever beam are respectively channel steels, the welding platform is a patterned steel plate, and the side connecting plate and the cantilever beam, and the cantilever beam and the welding platform are respectively welded and fixed.

6. The welding lifting platform according to claim 1, characterized in that: An elastic limit block is also provided near the bottom of the column, and the elastic limit block is used for limiting the support of the side connecting plate; a number of movable elastic buffer components are also provided below the cantilever beam, and the elastic buffer component includes a support seat arranged on the pad block, a bearing sleeve is provided inside the support seat, a spring is provided between the bearing sleeve and the support seat, a support platform is provided above the bearing sleeve, and an elastic pad is provided on the support platform.

7. A method for manufacturing and installing a welding lifting platform according to any one of claims 1 to 6, characterized in that: The manufacturing and installation method comprises the following steps: (1) Prepare materials and prefabricate the columns, the cantilever beams, the side connecting plates, the connecting shafts, the rollers, and the welding platforms; (2) Making the roller assembly, sleeve the roller on the connecting shaft, and fix the two ends of the connecting shaft to the side connecting plates respectively. Install the rollers on the two ends of a pair of side connecting plates respectively to form the roller assembly, and weld the cantilever beams on the two outer sides of the roller assembly respectively. The cantilever beams and the side connecting plates intersect to form an angle; (3) Fix the columns, weld a base plate to the bottom of the columns, fix the base plate to the ground foundation through a number of anchors, and arrange a pair of columns in parallel and spaced apart; (4) Installing the roller assembly, sleeve the roller assembly connected to the cantilever beam in (2) onto the column from above, and tilt the cantilever beam when sleeved so that the roller assembly can be sleeved onto the column horizontally, and then rotate the cantilever beam to make it horizontal. At this time, the rollers on the pair of connecting shafts just abut against both sides of the column, and the rollers roll downward along the column, so that the cantilever beam drops to an operable height and is temporarily supported by a number of elastic buffer assemblies; (5) Installing the welding platform, placing the welding platform horizontally on the cantilever beam, adjusting a first gap between the welding platform and the column, and then welding and fixing the welding platform; (6) Install the chain. First, weld the lifting lug on the welding platform, set the pulley above the column, and then connect one end of the chain to the lifting lug, and then connect the other end of the chain to the retracting and extending drive device after winding around the pulley; (7) Top plates are welded to the ends of a pair of columns, and cross beams are welded to the top plates; then connecting rods are welded to the sides of a pair of columns, and mounting plates are welded to the ends of the connecting rods. The mounting plates are fixedly connected to the building wall, and the installation of the lifting platform is completed.

8. The method for manufacturing and installing a welding lifting platform according to claim 7, characterized in that: In step (2), through geometric simulation and calculation, when the cantilever beam is set horizontally and the roller just abuts the outer side wall of the column, the angle between the cantilever beam and the side connecting plate is calculated, and then the cantilever beam is welded and fixed according to the angle data and the connection position; in the process of sheathing the roller assembly, when the cantilever beam is adjusted to a horizontal state, the roller assembly is also moved to maintain a second gap between the side connecting plate and the column; before using the welding platform, two slide rails are installed in parallel on the welding platform, and then the welding machine is set on a pair of the slide rails, and the welding gun of the welding machine extends downward from the front of the welding platform.

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