A portal frame channel steel opening and positioning mechanism and positioning method

Abstract

This invention discloses a portal frame channel steel opening and positioning mechanism, including an opening and positioning assembly. The opening and positioning assembly includes a base plate on which two opening and positioning rotating bodies are symmetrically mounted. Two clamping assemblies are symmetrically mounted on the base plate between the two opening and positioning rotating bodies. The clamping assemblies at the same end move towards the opening and positioning rotating bodies to clamp the side wall of one channel steel. A positioning method for the portal frame channel steel opening and positioning mechanism is also disclosed. This opening and positioning assembly is used to position two channel steels. By selecting two positioning seats of different lengths and opening and positioning blocks of different sizes, precise positioning of the opening of the two channel steels is achieved, and the compatibility range of different opening portal frames is improved.

Description

Technical Field

[0001] This invention relates to the field of forklift technology, specifically to a mast channel steel opening and positioning mechanism and positioning method. Background Technology

[0002] The forklift mast is the main load-bearing structure of the forklift's lifting device, consisting of the mast, fork carriage, and forks. A two-stage mast is a two-stage telescopic device composed of an outer mast and an inner mast, with the inner mast moving along the outer mast. The mast is composed of two channel steels and upper, middle, and lower crossbeams connecting the channel steels. Because there are many forklift models, there are also many compatible mast models; however, the channel steels of the mast are generally long and heavy, making it difficult to accurately determine the opening dimensions during manual assembly. Furthermore, to improve the forklift's workability, the accuracy of mast assembly is crucial. Therefore, it is necessary to determine the opening dimensions of the channel steels for different mast models. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a portal steel channel opening and positioning mechanism and a positioning method.

[0004] The technical solution of the present invention is as follows:

[0005] A portal frame channel steel opening and positioning mechanism includes an opening and positioning component. The opening and positioning component includes a base plate on which two opening and positioning rotating bodies are symmetrically mounted. Two clamping components are symmetrically mounted on the base plate between the two opening and positioning rotating bodies. The clamping components located at the same end move toward the opening and positioning rotating bodies to clamp the side wall of a channel steel.

[0006] In a further embodiment, the opening positioning rotating body includes a positioning mandrel fixed on the base plate. The outer periphery of the positioning mandrel is rotatably fitted with a lower rotating body and an upper rotating body from bottom to top. The outer side wall of the upper rotating body is respectively fixed with a long positioning seat and a short positioning seat. The long positioning seat or the short positioning seat is located on the same horizontal line as the clamping assembly.

[0007] An anti-rotation seat is fixedly provided on the outer side wall of the lower rotating body. The anti-rotation seat is rotatably connected to an anti-rotation clamping plate, and the anti-rotation clamping plate is movably fastened to the upper rotating body.

[0008] In a further embodiment, one end of the anti-rotation plate is connected to the anti-rotation seat via a rotating shaft, and the other end has a groove that engages with the bottom end of the long positioning seat or the short positioning seat. The anti-rotation plate rotates on the anti-rotation seat, and when the groove on it engages with the bottom end of the long positioning seat or the short positioning seat, the lower rotating body and the upper rotating body are connected as one unit.

[0009] In a further embodiment, a connecting seat is fixedly provided on the outer side wall of the lower rotating body, and a driving mechanism is fixedly provided on the base plate. The driving end of the driving mechanism is connected to the connecting seat through a pin to drive the lower rotating body to rotate. A limiting seat for limiting the driving mechanism is also fixedly provided on the outer side wall of the lower rotating body.

[0010] In a further embodiment, the lower rotating body and the upper rotating body are rotatably connected to the positioning spindle via bushings; a rotating shaft pressure plate is installed on the positioning spindle located at the bottom of the lower rotating body for axial limiting.

[0011] In a further embodiment, the opening positioning rotating body is connected to an opening positioning block, the opening positioning block includes a connecting block, one end of the connecting block is equipped with a pressing head and the other end is provided with an installation groove; the end of the long positioning seat or the short positioning seat is inserted into the installation groove and connected by a pin.

[0012] In a further embodiment, the clamping assembly includes a slide rail fixed to the base plate, a slider slidably connected to the slide rail, and a clamping block fixed on the slider; a driving device is fixed to the base plate, and the driving end of the driving device is connected to the slider, thereby driving the clamping block to move on the slide rail, and together with the opening positioning rotating body, clamping or releasing the channel steel.

[0013] In a further embodiment, the base plate is provided with a centering platform height support plate, the centering platform is fixed directly above the two clamping components, and the height support plate is movably installed on the rear side of the clamping components to support the channel steel.

[0014] A further embodiment also includes a base, with two opening positioning components symmetrically arranged at both ends of the base; a guide rail is fixed on the base, and the opening positioning components are slidably connected to the guide rail.

[0015] The second objective of this invention is to provide a positioning method for the aforementioned portal steel channel steel opening and positioning mechanism, comprising the following steps:

[0016] (1) First, adjust the spacing between the two opening positioning components according to the length of the channel steel and fix them on the base;

[0017] (2) Select the long or short positioning seat on the upper rotating body according to the different gantry opening size, and make it in line with the clamping assembly; then fasten the anti-rotation plate and connect the upper and lower rotating bodies into a whole.

[0018] (3) Select a suitable size opening positioning block and connect it to the long positioning seat or the short positioning seat. At this time, the positioning of the opening size of the two channel steels is completed.

[0019] (4) Select a height support plate of appropriate height according to the different models of gantry channel steel and install it on the base plate;

[0020] (5) Hoist the two channel steels to be assembled onto the two opening positioning components and set them on the height support plate;

[0021] (6) Start the clamping cylinder to drive the clamping assembly to move in the direction of the opening positioning rotating body on the same side. When the clamping head on the clamping assembly is in contact with the inner wall of the channel steel and is pressed against it, push the outer wall of the channel steel to be in contact with the pressing head on the opening positioning block. This completes the clamping and positioning of the channel steel.

[0022] (7) When demolding is required, the clamping cylinder retracts to move the clamping assembly outward and separate it from the inner wall of the channel steel. Then, the part positioning cylinder retracts to rotate the opening positioning rotating body by a certain angle, so that the long positioning seat or short positioning seat moves to the side and leaves the outer wall of the channel steel, thus separating the opening positioning block from the outer wall of the channel steel, and demolding is completed.

[0023] This application has the following advantages over the prior art:

[0024] This opening positioning assembly is used to position two channel steels. It has a centering platform in the middle for centering different types of upper crossbeams. The upper rotating body has two positioning seats of different lengths, which can be used to address the large differences in the opening of the gantry. The two positioning seats are of different lengths, which can reduce the number of times the opening positioning block needs to be replaced and improve the compatibility range of different opening gantry.

[0025] Furthermore, the opening positioning block in this application is connected to the opening positioning rotating body via a pin, facilitating its replacement. Specifically, a long or short positioning seat is selected based on the actual situation, i.e., the opening size of the channel steel, and an opening positioning block of the corresponding size is also selected. These are then connected as a whole, ensuring that the distance between the clamping heads on the two opening positioning blocks is equal to the distance between the outer walls of the two channel steels, thus achieving precise positioning of the opening of the two channel steels.

[0026] Two opening and positioning components are provided and slidably installed on the base. The distance between the two opening and positioning components can be adjusted according to the length of the channel steel, so that the two ends of the channel steel fall on the two opening and positioning components respectively, and clamp and position the two ends of the channel steel to ensure quality. Attached image description:

[0027] Figure 1 This is a schematic diagram of the opening positioning component in this application.

[0028] Figure 2 This is a schematic diagram of the structure for opening, positioning, and rotating in this application.

[0029] Figure 3 This is a sectional view of the opening, positioning, and rotation of the body in this application.

[0030] Figure 4This is a schematic diagram of the opening positioning block in this application.

[0031] Figure 5 This is a schematic diagram of the clamping assembly in this application.

[0032] Figure 6 This is a schematic diagram of the opening and positioning component in this application for demolding the channel steel.

[0033] Figure 7 This is a schematic diagram of the slot opening positioning component installed on the base in this application.

[0034] In the diagram: 1. Base plate

[0035] 2. Opening positioning rotating body, 21. Positioning mandrel, 22. Rotating shaft pressure plate, 231. Lower rotating body, 232. Upper rotating body, 233. Bushing, 24. Limit seat, 25. Anti-rotation clamping plate, 261. Short positioning seat, 262. Long positioning seat, 263. Pin, 27. Connecting seat, 28. Anti-rotation seat, 29. Rotating shaft.

[0036] 3. Opening positioning block, 31. Connecting block, 32. Mounting slot, 33. Clamping head.

[0037] 4 Clamping assembly, 41 Slide rail, 42 Slider, 43 Connecting plate, 44 Clamping block, 45 Clamping head, 5 Clamping cylinder, 6 Centering platform, 7 Height support plate, 8 Positioning cylinder; Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] See Figure 1-7 This application provides a portal steel channel opening and positioning mechanism, including an opening and positioning component. The opening and positioning component includes a base plate 1, on which two opening and positioning rotating bodies 2 are symmetrically installed. Two clamping components 4 are symmetrically installed on the base plate 1 between the two opening and positioning rotating bodies 2. The clamping components 4 located at the same end move toward the opening and positioning rotating bodies 2 to clamp the side wall of a channel steel.

[0041] Based on the width of the gantry, adjust the distance between the two opening positioning rotating bodies 2. By moving the clamping assembly 4, position the outer side of the channel steel and clamp the inner side with the opening positioning rotating bodies 2, thereby achieving the positioning of the gantry width and the opening between the two channel steels. Finally, install the crossbeam, middle crossbeam, and other components between the two channel steels.

[0042] The opening positioning rotating body 2 includes a positioning mandrel 21 fixed on the base plate 1. The positioning mandrel 21 is rotatably sleeved with a lower rotating body 231 and an upper rotating body 232 from bottom to top. The outer side wall of the upper rotating body 232 is respectively fixed with a long positioning seat 262 and a short positioning seat 261. The long positioning seat 262 or the short positioning seat 261 is located on the same horizontal line as the clamping assembly 4. That is, according to the width of the gantry, the long positioning seat 262 or the short positioning seat 261 can be selected to clamp the side wall of the channel steel with the clamping assembly 4.

[0043] An anti-rotation seat 28 is fixedly provided on the outer wall of the lower rotating body 231. The anti-rotation seat 28 is rotatably connected to an anti-rotation clamping plate 25, which is movably fastened to the upper rotating body 232. That is, after the anti-rotation clamping plate 25 is fastened to the upper rotating body 232, the upper and lower rotating bodies are connected as one unit, preventing the upper rotating body 232 from rotating and achieving positioning. When the upper rotating body 232 needs to be rotated to adjust its position, the anti-rotation clamping plate 25 is pulled outward, and its bottom end rotates outward around the rotating shaft 29 fixed on the anti-rotation seat 28, thereby separating the upper rotating body 232 and allowing it to rotate freely.

[0044] In another embodiment, one end of the anti-rotation plate 25 is connected to the anti-rotation seat 28 via a rotating shaft 29, and the other end has a groove that engages with the bottom end of the long positioning seat 262 or the short positioning seat 261. The anti-rotation plate 25 rotates on the anti-rotation seat 28. When the groove on it engages with the bottom end of the long positioning seat 262 or the short positioning seat 261, the lower rotating body 231 and the upper rotating body 232 are connected as one unit.

[0045] In another embodiment, to control the rotation of the upper and lower rotating bodies, a connecting seat 27 is fixed on the outer wall of the lower rotating body 231, and a driving mechanism is fixed on the base plate 1. The driving end of the driving mechanism is connected to the connecting seat 27 via a pin, driving the lower rotating body 231 to rotate. A limiting seat 24 for limiting the driving mechanism is also fixed on the outer wall of the lower rotating body 231. In this embodiment, the driving mechanism is a positioning cylinder 8. The driving end of the positioning cylinder 8 is connected to the connecting seat 27 via a pin. When the positioning cylinder 8 extends, since it is connected via a pin, it can push the connecting seat 27 to rotate the lower rotating body 231 together. After the anti-rotation clamping plate 25 is engaged with the upper rotating body 232, it pushes the entire opening positioning rotating body 2 to rotate together, causing the long positioning seat 262 or the short positioning seat 261 on the opening positioning rotating body 2 to disengage from the channel steel, thus achieving demolding (e.g. Figure 6 (As shown). The limiting seat 24 is used to limit the extension of the positioning cylinder 8. That is, when the extension end of the positioning cylinder 8 contacts the limiting seat 24, the extension operation stops.

[0046] In a further embodiment, the lower rotating body 231 and the upper rotating body 232 are rotatably connected to the positioning spindle 21 via bushings 233, as shown below. Figure 3 As shown, bushings 233 are installed at the upper and lower ends of the lower rotating body 231 and the upper rotating body 232 respectively to improve the smoothness of the upper and lower rotating bodies rotating on the positioning spindle 21; a rotating shaft pressure plate 22 is installed on the positioning spindle 21 at the bottom end of the lower rotating body 231 for axial limiting.

[0047] To achieve adaptability and flexibility, the opening positioning rotating body 2 is connected to an opening positioning block 3. The opening positioning block 3 includes a connecting block 31, one end of which is equipped with a clamping head 33, and the other end has an installation groove 32. The end of the long positioning seat 262 or the short positioning seat 261 is inserted into the installation groove 32 and connected by a pin 263. As shown in the figure, the installation groove 32 is not completely milled through to increase the rigidity of the connecting block 31 and reduce its deformation. The pin 263 is used for connection to facilitate the replacement of the opening positioning block 3. The size of the opening positioning block 3 varies. The long positioning seat 262 or the short positioning seat 261 can be selected according to the actual situation, i.e., the opening size of the channel steel. At the same time, the opening positioning block 3 of the corresponding size is also selected. Then, the end of the long positioning seat 262 or the short positioning seat 261 is inserted into the installation groove 32 on the opening positioning block 3 and connected into a whole by the pin 263. Then, the distance between the clamping heads 33 on the two opening positioning blocks 3 is equal to the distance between the outer walls of the two channel steels.

[0048] The clamping assembly 4 includes a slide rail 41 fixed on the base plate 1, a slider 42 slidably connected to the slide rail 41, and a clamping block 44 fixed on the slider 42; a driving device is fixed on the base plate 1, and the driving end of the driving device is connected to the slider 42, thereby driving the clamping block 44 to move on the slide rail 41, and clamping or releasing the channel steel together with the opening positioning rotating body 2.

[0049] In this embodiment, the driving device is a clamping cylinder 5. The driving end of the clamping cylinder 5 is connected to the slider 42 through the connecting plate 43. When the clamping cylinder 5 is working, the slider 42 drives the clamping head 45 mounted on the clamping block 44 to move forward or backward in the direction of the opening positioning rotating body 2, thereby achieving the clamping or releasing of the channel steel together.

[0050] The base plate 1 is equipped with a centering platform 6 and a height support plate 7. The centering platform 6 is fixed directly above the two clamping assemblies 4, and the height support plate 7 is movably installed on the rear side of the clamping assemblies 4 to support the channel steel. The centering platform 6 acts as a centering structure, providing a height and centering base for positioning components such as the upper and lower crossbeams and chain plates on the gantry, thus improving mold compatibility. The height support plate 7 supports the channel steel, and different heights of the support plate 7 can be selected according to different channel steel models. It is inserted or bolted to the base plate 1 for easy replacement.

[0051] For ease of operation, such as Figure 7 As shown, this embodiment also includes a base 9. Two opening positioning components are symmetrically arranged at both ends of the base 9. A guide rail 9-1 is fixedly mounted on the base 9. The base plate of each opening positioning component is slidably connected to the guide rail 9-1 via a sliding table, allowing it to move along the guide rail. That is, the two opening positioning components are slidably mounted on the base 9. The distance between the two opening positioning components can be adjusted according to the length of the channel steel, so that both ends of the channel steel fall onto the two opening positioning components respectively, clamping and positioning both ends of the channel steel to ensure quality.

[0052] In this application, one slotting positioning component can be provided, suitable for slotting positioning of shorter channel steel; or two components can be provided, suitable for slotting positioning of longer channel steel. The optimal solution is to provide two components.

[0053] In addition, the base 9 has symmetrical U-shaped hollow areas at both ends; when positioning the channel steel on the gantry, workers can enter this hollow area to place and fine-tune the channel steel, improving the convenience of operation.

[0054] Example 2:

[0055] A positioning method for a portal steel channel opening and positioning mechanism includes the following steps:

[0056] (1) First, adjust the spacing between the two opening positioning components according to the length of the channel steel and fix them on the base;

[0057] Even if both ends of the channel steel can fall on the two opening positioning components respectively, the two opening positioning components can be fixed on the base 9 by using fixing pins, latches, etc.

[0058] (2) Select the long positioning seat 262 or short positioning seat 261 on the upper rotating body 232 according to the different gantry opening size, that is, rotate the direction of the upper rotating body 232 so that the appropriate long positioning seat 262 or short positioning seat 261 is on the same straight line as the clamping assembly 4; then fasten the anti-rotation plate 25 to connect the upper rotating body 232 and the lower rotating body 231 into a whole;

[0059] (3) Select a suitable size opening positioning block 3 and connect and fix it to the long positioning seat 262 or the short positioning seat 261 through the pin 263. At this time, the positioning of the opening size of the two channel steels is completed.

[0060] (4) Select a height support plate 7 of appropriate height according to different models of gantry channel steel and install it on the base plate 1;

[0061] (5) Hoist the two channel steels to be assembled onto the two opening positioning components, so that they are mounted on the height support plate 7;

[0062] (6) Start the clamping cylinder 5 to drive the clamping assembly 4 to move towards the opening positioning rotating body 2 on the same side. When the clamping head 45 on the clamping assembly 4 is in contact with the inner wall of the channel steel and is pressed against it, the outer wall of the channel steel is pushed to be in contact with the pressing head 33 on the opening positioning block 3. Thus, the clamping and positioning of the channel steel is completed.

[0063] (7) When demolding is required, the clamping cylinder 5 retracts, causing the clamping assembly 4 to move outward and disengage from the inner wall of the channel steel. Then, the retraction of the positioning cylinder 8 causes the opening positioning rotating body 2 to rotate at a certain angle, causing the long positioning seat 262 or the short positioning seat 261 to move laterally away from the outer wall of the channel steel, thus disengaging the opening positioning block 3 from the outer wall of the channel steel. Demolding is thus completed. Figure 6 (As shown).

[0064] When assembling other components such as the upper crossbeam and middle crossbeam on the gantry, positioning lines can be marked on the channel steel in advance for positioning and assembly.

[0065] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0066] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A portal steel channel opening and positioning mechanism, comprising an opening and positioning component, wherein the opening and positioning component includes a base plate (1), characterized in that: Two opening positioning rotating bodies (2) are symmetrically installed on the base plate (1); two clamping assemblies (4) are symmetrically installed on the base plate (1) between the two opening positioning rotating bodies (2); the clamping assembly (4) located at the same end moves toward the opening positioning rotating body (2) to clamp the side wall of a channel steel. The opening positioning rotating body (2) includes a positioning spindle (21) fixed on the base plate (1). The positioning spindle (21) is rotatably sleeved with a lower rotating body (231) and an upper rotating body (232) from bottom to top. The outer side wall of the upper rotating body (232) is respectively fixed with a long positioning seat (262) and a short positioning seat (261). The long positioning seat (262) or the short positioning seat (261) is located on the same horizontal line as the clamping assembly (4). An anti-rotation seat (28) is fixedly provided on the outer side wall of the lower rotating body (231). The anti-rotation seat (28) is rotatably connected to an anti-rotation clamping plate (25). The anti-rotation clamping plate (25) is movably fastened to the upper rotating body (232). One end of the anti-rotation plate (25) is provided with a groove that engages with the bottom end of the long positioning seat (262) or the short positioning seat (261). The anti-rotation plate (25) rotates on the anti-rotation seat (28). When the groove on it engages with the bottom end of the long positioning seat (262) or the short positioning seat (261), the lower rotating body (231) and the upper rotating body (232) are connected as one unit. A connecting seat (27) is fixed on the outer side wall of the lower rotating body (231), and a driving mechanism is fixed on the bottom plate (1). The driving end of the driving mechanism is connected to the connecting seat (27) by a pin to drive the lower rotating body (231) to rotate. A limiting seat (24) for limiting the driving mechanism is also fixed on the outer side wall of the lower rotating body (231). A rotating shaft pressure plate (22) is installed on the positioning spindle (21) at the bottom of the lower rotating body (231) for axial limiting. The clamping assembly (4) includes a slide rail (41) fixed on the base plate (1), a slider (42) slidably connected to the slide rail (41), and a clamping block (44) fixed on the slider (42); a driving device is fixed on the base plate (1), and the driving end of the driving device is connected to the slider (42), thereby driving the clamping block (44) to move on the slide rail (41) and clamp or release the channel steel together with the opening positioning rotating body (2).

2. The portal steel channel opening and positioning mechanism according to claim 1, characterized in that: The other end of the anti-rotation plate (25) is connected to the anti-rotation seat (28) via a rotating shaft (29).

3. The portal steel channel opening and positioning mechanism according to claim 1, characterized in that: The lower rotating body (231) and the upper rotating body (232) are rotatably connected to the positioning spindle (21) through bushings (233).

4. The portal steel channel opening and positioning mechanism according to claim 1, characterized in that: The opening positioning rotating body (2) is connected to the opening positioning block (3). The opening positioning block (3) includes a connecting block (31). One end of the connecting block (31) is equipped with a pressing head (33), and the other end is provided with an installation groove (32). The end of the long positioning seat (262) or the short positioning seat (261) is inserted into the installation groove (32) and connected by a pin (263).

5. The portal steel channel opening and positioning mechanism according to claim 4, characterized in that: The base plate (1) is provided with a centering platform (6) and a height support plate (7). The centering platform (6) is fixed directly above the two clamping components (4). The height support plate (7) is movably installed on the rear side of the clamping components (4) to support the channel steel.

6. The portal steel channel opening and positioning mechanism according to claim 5, characterized in that: It also includes a base (9), and the opening positioning component is provided in two symmetrically arranged at both ends of the base (9); a guide rail (9-1) is fixed on the base (9), and the opening positioning component is slidably connected to the guide rail (9-1).

7. A positioning method for a portal steel channel steel opening and positioning mechanism as described in claim 6, characterized in that: Includes the following steps: (1) First, adjust the spacing between the two opening positioning components according to the length of the channel steel and fix them on the base; (2) Select the long or short positioning seat on the upper rotating body according to the different gantry opening size, and make it in line with the clamping assembly; then fasten the anti-rotation plate to connect the upper rotating body and the lower rotating body into a whole. (3) Select a suitable size opening positioning block and connect it to the long positioning seat or the short positioning seat. At this time, the positioning of the opening size of the two channel steels is completed. (4) Select a height support plate of appropriate height according to the different models of gantry channel steel and install it on the base plate; (5) Hoist the two channel steels to be assembled onto the two opening positioning components and set them on the height support plate; (6) Start the clamping cylinder to drive the clamping assembly to move in the direction of the opening positioning rotating body on the same side. When the clamping head on the clamping assembly is in contact with the inner wall of the channel steel and is pressed against it, push the outer wall of the channel steel to be in contact with the pressing head on the opening positioning block. This completes the clamping and positioning of the channel steel. (7) When demolding is required, the clamping cylinder retracts to move the clamping assembly outward and separate it from the inner wall of the channel steel. Then, the retraction of the positioning cylinder drives the opening positioning rotating body to rotate at a certain angle, so that the long positioning seat or the short positioning seat moves to the side and leaves the outer wall of the channel steel, thus separating the opening positioning block from the outer wall of the channel steel, and demolding is completed.

Images