Door frame channel steel opening positioning mechanism

Abstract

The utility model discloses a door frame channel steel opening positioning mechanism which comprises an opening positioning assembly, the opening positioning assembly comprises a bottom plate, and two opening positioning rotating bodies are symmetrically installed on the bottom plate. Two clamping assemblies are symmetrically installed on the portion, located between the two opening positioning rotating bodies, of the bottom plate, and the clamping assemblies located at the same end move towards the opening positioning rotating bodies to clamp the side wall of one steel channel. The opening positioning assembly is used for positioning the two pieces of channel steel, accurate positioning of opening of the two pieces of channel steel is achieved by selecting the two positioning seats with different lengths and the opening positioning blocks with different sizes, and the compatible range of different opening portal frames is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a door frame channel steel opening and positioning mechanism. Background Art

[0002] The forklift mast is the main load-bearing structure of the forklift pickup device, which is composed of a mast, a fork frame, a fork, etc. The two-stage mast is a two-stage telescopic device composed of an outer mast and an inner mast, and the inner mast moves along the outer mast. The mast is composed of two channel steels and upper, middle and lower beams connecting the channel steels. Since there are many types of forklifts, there are many types of masts that are suitable for them; and the general mast channel steel is long and heavy, and it is difficult to grasp the size of its opening when assembling it manually. In addition, in order to improve the workability of the forklift, the accuracy of mast assembly is also required to be relatively high. Therefore, it is necessary to locate the opening size of the channel steel of different mast models. Utility Model Content

[0003] In order to solve the above existing problems, the utility model provides a door frame channel steel opening and positioning mechanism.

[0004] The technical solution of the utility model is as follows:

[0005] A door frame channel steel opening and positioning mechanism includes an opening and positioning assembly, the opening and positioning assembly includes a base plate, and two opening and positioning swivels are symmetrically installed on the base plate; two clamping assemblies are symmetrically installed on the base plate located between the two opening and positioning swivels, and the clamping assemblies located at the same end move toward the opening and positioning swivel to clamp the side wall of a channel steel.

[0006] In a further embodiment, the opening and positioning swivel comprises a positioning mandrel fixed on the bottom plate, the outer circumference of the positioning mandrel is sequentially rotatably sleeved with a lower swivel and an upper swivel from bottom to top, and the outer side wall of the upper swivel is respectively fixed with a long positioning seat and a short positioning seat, and 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 arranged on the outer side wall of the lower rotating body, and the anti-rotation seat is rotatably connected with an anti-rotation clamping plate, and the anti-rotation clamping plate is movably buckled with the upper rotating body.

[0008] A further solution is that one end of the anti-rotation plate is connected to the anti-rotation seat via a rotating shaft, and the other end is provided with 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 into one.

[0009] According to a further solution, a connecting seat is fixedly provided on the outer wall of the lower rotating body, a driving mechanism is fixedly provided on the bottom plate, a driving end of the driving mechanism is connected to the connecting seat by a pin shaft, and drives the lower rotating body to rotate; a limiting seat is also fixedly provided on the outer wall of the lower rotating body to limit the driving mechanism.

[0010] In a further solution, the lower rotating body and the upper rotating body are rotatably connected to the positioning core shaft through bushings respectively; a rotating shaft pressure plate is installed on the positioning core shaft located at the bottom end of the lower rotating body for axial limitation.

[0011] According to a further solution, the opening gear positioning swivel is connected to an opening gear positioning block, which includes a connecting block, a clamping head is installed at one end of the connecting block, and an installation groove is opened at the other end; the end of the long positioning seat or the short positioning seat is inserted into the installation groove and connected by a pin.

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

[0013] In a further solution, a centering platform height support plate is provided on the base plate, the centering platform is fixed just above between the two clamping assemblies, and the height support plate is movably installed at the rear side of the clamping assembly to support the channel steel.

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

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This opening positioning assembly is used to position two channel steels, and a centering platform is provided in the middle to center different types of upper beams; two positioning seats of different lengths are provided on the upper swivel, which can be used to address the large differences in the opening of the door frame. The two positioning seats are one long and one short, which can reduce the number of times the opening positioning block is replaced and improve the compatibility range of different opening door frames.

[0017] In addition, the opening positioning block in the present application is connected to the opening positioning swivel through a pin, which is convenient for replacement. That is, according to the actual situation, i.e., the opening size of the channel steel, a long positioning seat or a short positioning seat is selected, and the opening positioning block of the corresponding size is also selected, and then connected into a whole, so that the distance between the clamping heads on the two opening positioning blocks is equal to the distance between the outer side walls of the two channel steels, and the opening of the two channel steels can be accurately positioned.

[0018] There are two opening positioning components, which are slidably installed on the base. The distance between the two opening 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 positioning components respectively, and the two ends of the channel steel are clamped and positioned respectively to ensure the quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the opening and positioning assembly in this application.

[0020] Figure 2 This is a schematic diagram of the structure of the opening and positioning swivel in this application.

[0021] Figure 3 This is a cross-sectional view of the opening and positioning swivel in this application.

[0022] Figure 4 This is a schematic diagram of the structure of the opening and positioning block in this application.

[0023] Figure 5 is a schematic diagram of the structure of the clamping assembly in this application,

[0024] Figure 6 This is a schematic diagram of the demoulding of the channel steel by the opening and positioning assembly in this application.

[0025] Figure 7 This is a schematic diagram of the opening and positioning assembly in this application installed on the base.

[0026] In the figure: 1 bottom plate,

[0027] 2 opening positioning swivel, 21 positioning mandrel, 22 rotating shaft pressure plate, 231 lower swivel, 232 upper swivel, 233 bushing, 24 limiting seat, 25 anti-rotation card plate, 261 short positioning seat, 262 long positioning seat, 263 latch, 27 connecting seat, 28 anti-rotation seat, 29 rotating shaft,

[0028] 3 opening positioning block, 31 connecting block, 32 mounting slot, 33 clamping head,

[0029] 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 DESCRIPTION

[0030] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] See also Figure 1-7 The present application provides a door frame channel steel opening and positioning mechanism, including an opening and positioning assembly, the opening and positioning assembly includes a base plate 1, and two opening and positioning swivels 2 are symmetrically installed on the base plate 1; two clamping assemblies 4 are symmetrically installed on the base plate 1 located between the two opening and positioning swivels 2, and the clamping assembly 4 located at the same end moves toward the opening and positioning swivel 2 to clamp the side wall of a channel steel.

[0033] According to the width of the door frame, the distance between the two opening positioning swivels 2 is adjusted, and the clamping assembly 4 is moved to position the outer side of the channel steel and clamp the inner side with the opening positioning swivel 2, so as to realize the positioning of the door frame width and the opening between the two channel steels. Finally, the upper crossbeam, the middle crossbeam and other components are installed between the two channel steels.

[0034] The opening positioning swivel 2 includes a positioning core shaft 21 fixed on the base plate 1, and the outer circumference of the positioning core shaft 21 is rotated from bottom to top and is successively sleeved with a lower swivel 231 and an upper swivel 232, and the outer side walls of the upper swivel 232 are respectively fixed with a long positioning seat 262 and a short positioning seat 261, and 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 size of the door frame, 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.

[0035] An anti-rotation seat 28 is fixedly arranged on the outer wall of the lower rotating body 231, and the anti-rotation seat 28 is rotatably connected with an anti-rotation clamping plate 25, and the anti-rotation clamping plate 25 is movably buckled with the upper rotating body 232. That is, after the anti-rotation clamping plate 25 is buckled with the upper rotating body 232, the upper and lower rotating bodies are connected into one body, the rotation of the upper rotating body 232 is avoided, and the positioning is achieved. When the upper rotating body 232 needs to be rotated to adjust the position, the anti-rotation clamping plate 25 is pulled outward, and its bottom end is rotated outward around the rotating shaft 29 fixed on the anti-rotation seat 28, so that the upper rotating body 232 is separated and independent, and then it can rotate freely.

[0036] In another embodiment, one end of the anti-rotation plate 25 is connected to the anti-rotation seat 28 through a rotating shaft 29, and the other end 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, and when the groove thereon 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 into one.

[0037] In another embodiment, in order to control the rotation of the upper and lower rotating bodies, a connecting seat 27 is fixedly provided on the outer wall of the lower rotating body 231, and a driving mechanism is fixedly provided on the bottom plate 1. The driving end of the driving mechanism is connected to the connecting seat 27 by a pin shaft to drive the lower rotating body 231 to rotate; a limiting seat 24 for limiting the driving mechanism is also fixedly provided on the outer wall of the lower rotating body 231. In this embodiment, the driving mechanism is a positioning cylinder 8, and the driving end of the positioning cylinder 8 is connected to the connecting seat 27 by a pin shaft. When the positioning cylinder 8 is extended, since it is connected by a pin shaft, it can push the connecting seat 27 to rotate with the lower rotating body 231. Since the anti-rotation clamping plate 25 is buckled with the upper rotating body 232, it pushes the entire opening positioning rotating body 2 to rotate together, so that the long positioning seat 262 or the short positioning seat 261 on the opening positioning rotating body 2 is separated from the channel steel, and demolding is achieved (such as Figure 6 The limit seat 24 is used to limit the extension of the positioning cylinder 8, that is, when the telescopic end of the positioning cylinder 8 contacts the limit seat 24, the extension work is stopped.

[0038] In a further embodiment, the lower rotating body 231 and the upper rotating body 232 are rotatably connected to the positioning core shaft 21 through the bushing 233, as shown in FIG. 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 rotation of the upper and lower rotating bodies on the positioning core shaft 21; a rotating shaft pressure plate 22 is installed on the positioning core shaft 21 at the bottom end of the lower rotating body 231 for axial limiting.

[0039] In order to achieve adaptability and flexibility, the opening and positioning swivel 2 is connected with an opening and positioning block 3, and the opening and positioning block 3 includes a connecting block 31, and the connecting block 31 is provided with a pressing head 33 at one end and a mounting groove 32 at the other end; the end of the long positioning seat 262 or the short positioning seat 261 is inserted into the mounting groove 32 and connected by a latch 263. As shown in the figure, the mounting groove 32 is not completely milled through, which increases the rigidity of the connecting block 31 and reduces its deformation; the latch 263 is used to connect and facilitate the replacement of the opening and positioning block 3. The size of the opening and positioning block 3 is different. The long positioning seat 262 or the short positioning seat 261 can be selected according to the actual situation, that is, the opening size of the channel steel, and the opening and positioning block 3 of the corresponding size can also be selected. Then, the end of the long positioning seat 262 or the short positioning seat 261 is inserted into the mounting groove 32 on the opening and positioning block 3 and connected into a whole by the latch 263, so that the distance between the pressing heads 33 on the two opening and positioning blocks 3 is equal to the distance between the outer walls of the two channel steels.

[0040] The clamping assembly 4 includes a slide rail 41 fixed on the base plate 1, the slide rail 41 is slidably connected to a slider 42, and a clamping block 44 is 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 swivel 2.

[0041] 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 works, the slider 42 drives the clamping head 45 installed on the clamping block 44 to move forward or backward in the direction of the opening and positioning swivel 2, thereby clamping or releasing the channel steel.

[0042] The base plate 1 is provided with a centering platform 6 and a height support plate 7. The centering platform 6 is fixed just above the two clamping assemblies 4. The height support plate 7 is movably installed on the rear side of the clamping assembly 4 to support the channel steel. The centering platform 6 is equivalent to a centering structure of a platform. The positioning of the upper crossbeam, lower crossbeam, chain plate and other parts on the door frame can use this centering platform as the height and centering positioning base to improve the compatibility of the mold. The height support plate 7 is used to support the channel steel. The height support plates 7 of different heights can be selected according to different types of channel steels. They can be inserted or fixed to the base plate 1 by bolts for easy replacement.

[0043] For ease of operation, Figure 7 As shown, this embodiment also includes a base 9, and the two opening and positioning components are provided and symmetrically arranged at the two ends of the base 9; the base 9 is fixed with a guide rail 9-1, and the bottom plate of the opening and positioning component is slidably connected to the guide rail 9-1 through a slide table and can move along the guide rail. That is, the two opening and positioning components are slidably installed on the base 9, and the spacing 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 the two ends of the channel steel are clamped and positioned respectively, thereby ensuring the quality.

[0044] In the present application, one opening and positioning assembly can be provided, which is suitable for opening and positioning of a shorter channel steel; or two opening and positioning assemblies can be provided, which is suitable for opening and positioning of a longer channel steel. The best solution is to provide two opening and positioning assemblies.

[0045] In addition, U-shaped hollow areas are symmetrically provided at both ends of the base 9; when positioning the channel steel on the door frame, workers can enter the hollow area to place and fine-tune the channel steel, thereby improving the convenience of operation.

[0046] The working process of the opening and positioning component in this application is:

[0047] (1) First, adjust the distance between the two opening positioning components according to the length of the channel steel and fix them on the base;

[0048] Even if the two ends of the channel steel can fall on the two opening and positioning components respectively, the two opening and positioning components can be fixed on the base 9 respectively by using fixing pins, latches, etc.;

[0049] (2) Select the long positioning seat 262 or the short positioning seat 261 on the upper rotating body 232 according to the different door frame opening sizes, that is, rotate the direction of the upper rotating body 232 so that the appropriate long positioning seat 262 or short positioning seat 261 and the clamping assembly 4 are in the same straight line; then buckle the anti-rotation clamping plate 25 to connect the upper rotating body 232 and the lower rotating body 231 into a whole;

[0050] (3) Select a suitable size of the opening positioning block 3, and connect and fix it to the long positioning seat 262 or the short positioning seat 261 through the latch 263, and the positioning of the opening size of the two channel steels is completed;

[0051] (4) Select a height support plate 7 of appropriate height according to different types of portal channel steels and install it on the base plate 1;

[0052] (5) Lift the two channel steels to be assembled onto the two opening and positioning assemblies so that they are erected on the height support plate 7;

[0053] (6) Start the clamping cylinder 5 to drive the clamping assembly 4 to move toward the direction of the opening and positioning swivel 2 on the same side. When the clamping head 45 on the clamping assembly 4 fits and presses against the inner wall of the channel steel, the outer wall of the channel steel is pushed to fit against the pressing head 33 on the opening and positioning block 3, thereby completing the clamping and positioning of the channel steel.

[0054] (7) When demoulding is required, the clamping cylinder 5 is contracted to drive the clamping assembly 4 to move outward and separate from the inner wall of the channel steel, and then the positioning cylinder 8 is retracted to drive the opening and positioning swivel 2 to rotate a certain angle, so that the long positioning seat 262 or the short positioning seat 261 moves sideways and leaves the outer wall of the channel steel, even if the opening and positioning block 3 is separated from the outer wall of the channel steel, and the demoulding is completed (such as Figure 6 shown).

[0055] When assembling the upper crossbeam, middle crossbeam and other components on the portal frame, positioning lines can be drawn on the channel steel in advance for positioning and assembly.

[0056] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0057] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A door frame channel steel opening and positioning mechanism, comprising an opening and positioning assembly, wherein the opening and positioning assembly comprises a bottom plate (1), characterized in that: Two opening positioning swivels (2) are symmetrically mounted on the base plate (1); two clamping assemblies (4) are symmetrically mounted on the base plate (1) located between the two opening positioning swivels (2); the clamping assemblies (4) located at the same end move toward the opening positioning swivel (2) to clamp the side wall of a channel steel.

2. A door frame channel steel opening and positioning mechanism according to claim 1, characterized in that: The opening positioning swivel (2) comprises a positioning core shaft (21) fixedly mounted on the bottom plate (1); a lower swivel (231) and an upper swivel (232) are rotatably sleeved on the outer circumference of the positioning core shaft (21) from bottom to top; a long positioning seat (262) and a short positioning seat (261) are fixedly mounted on the outer side wall of the upper swivel (232); the long positioning seat (262) or the short positioning seat (261) are 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), and the anti-rotation clamping plate (25) is movably buckled with the upper rotating body (232).

3. A door frame channel steel opening and positioning mechanism according to claim 2, characterized in that: One end of the anti-rotation clamping plate (25) is connected to the anti-rotation seat (28) via a rotating shaft (29), and the other end is provided with a groove engaged with the bottom end of the long positioning seat (262) or the short positioning seat (261). The anti-rotation clamping plate (25) rotates on the anti-rotation seat (28), and when the groove on the anti-rotation clamping plate (25) 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 into one body.

4. A door frame channel steel opening and positioning mechanism according to claim 2, characterized in that: A connecting seat (27) is fixedly provided on the outer side wall of the lower rotating body (231); a driving mechanism is fixedly provided on the bottom plate (1); a driving end of the driving mechanism is connected to the connecting seat (27) via a pin shaft to drive the lower rotating body (231) to rotate; a limiting seat (24) for limiting the driving mechanism is also fixedly provided on the outer side wall of the lower rotating body (231).

5. A door frame channel steel opening and positioning mechanism according to claim 2, characterized in that: The lower rotating body (231) and the upper rotating body (232) are rotatably connected to the positioning core shaft (21) via bushings (233) respectively; a rotating shaft pressing plate (22) is installed on the positioning core shaft (21) at the bottom end of the lower rotating body (231) for axial limiting.

6. A door frame channel steel opening and positioning mechanism according to claim 2, characterized in that: The opening positioning swivel (2) is connected to an opening positioning block (3), the opening positioning block (3) comprising a connecting block (31), one end of the connecting block (31) being provided with a pressing head (33) and the other end being provided with a mounting groove (32); the end of the long positioning seat (262) or the short positioning seat (261) being inserted into the mounting groove (32) and connected via a latch (263).

7. A door frame channel steel opening and positioning mechanism according to claim 1, characterized in that: The clamping assembly (4) comprises a slide rail (41) fixedly mounted on the base plate (1), the slide rail (41) being slidably connected to a slider (42), and a clamping block (44) being fixedly mounted on the slider (42); a driving device is fixedly mounted on the base plate (1), and a 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 and positioning swivel (2).

8. The door frame channel steel opening and positioning mechanism according to claim 1, 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 just above the two clamping assemblies (4); and the height support plate (7) is movably mounted on the rear side of the clamping assembly (4) for supporting the channel steel.

9. A door frame channel steel opening and positioning mechanism according to claim 1, characterized in that: It also comprises a base (9), two of the opening and positioning components are provided and symmetrically arranged at the two ends of the base (9); a guide rail (9-1) is fixedly arranged on the base (9), and the opening and positioning components are slidably connected to the guide rail (9-1).

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