A hoist for forging bars

Abstract

The utility model provides a kind of hoisting device for forging bar, it is related to hoisting field, the scheme used is: including moving crossbeam, still include: positioning fixture, positioning fixture is set in the middle position of moving crossbeam, two sliding slots are provided on moving crossbeam, two sliding slots are symmetrical about positioning fixture;At least two mobile clamps, mobile clamp is set in corresponding sliding slot, and mobile clamp can be moved along the length direction of sliding slot.The utility model can flexibly adjust clamping point according to bar size, ensure the stability of transportation.

Description

Technical Field

[0001] This utility model relates to the field of hoisting, and in particular to a hoisting device for forging bars. Background Technology

[0002] Precision forging refers to a forming technology in which parts, after being forged, require only minor or no further processing to meet the part requirements. It is an important component of advanced manufacturing technology. Generally, long bars are transported using hooks and chains. This requires manual labor to lift high-temperature forgings with auxiliary tools such as long hooks. Being close to the workpiece can easily lead to burns. More importantly, it is difficult to achieve fast and stable gripping and fixing.

[0003] In the prior art, Chinese utility model patent with authorization announcement number CN202449720U discloses a clamp-type lifting device, which has a lifting ring and a main lifting chain. A butterfly buckle is connected to each end of the main lifting chain, with one end of the butterfly buckle connected to the lifting ring. An earring is provided at the middle of the upper end of a movable crossbeam, and the earring is connected to the butterfly buckle at the other end of the main lifting chain. A through hole is opened at each of the left and right ends of the movable crossbeam, and a butterfly buckle is connected to each through hole. Each butterfly buckle is connected to a secondary lifting chain, and each end of each secondary lifting chain also has a butterfly buckle connected to it. Each butterfly buckle has a lifting clamp, and the two clamps on each secondary lifting chain are hinged. The two secondary lifting chains on the movable crossbeam are of equal length. This technical solution achieves the transfer of longer materials through the lifting clamps at both ends.

[0004] Because the forged bars are of varying lengths, on the one hand, it is necessary to adjust the distance between the lifting clamps to ensure that the clamping points on the bars are evenly distributed and that the lifting equipment is subjected to uniform force. On the other hand, to ensure smooth transport, clamping points need to be set in the middle of the bars. Using the above technical solution, it is impossible to adjust the distance between the lifting clamps at both ends, which cannot meet the lifting requirements of forged bars of varying lengths. Utility Model Content

[0005] To address the technical problem that clamp-type lifting devices in the prior art cannot flexibly adjust the clamping points of forging bars, this utility model provides a lifting device for forging bars that can flexibly adjust the clamping points according to the size of the bars, ensuring stable transportation.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a hoisting device for forging bars, including a moving crossbeam, and further including: a positioning clamp, the positioning clamp being disposed at the middle position of the moving crossbeam, the positioning clamp being unable to move along the length direction of the moving crossbeam, the moving crossbeam being provided with two sliding grooves, the two sliding grooves being symmetrical about the positioning clamp; at least two moving clamps, the moving clamps being disposed in the corresponding sliding grooves, the moving clamps being able to move along the length direction of the sliding grooves.

[0007] This invention, through the combination of a positioning clamp, a moving clamp, and a spacing adjustment component, allows for adjustment of the clamping position distribution according to the size of the bar stock during clamping. This ensures that clamping points are available in the center of bars of various sizes during lifting, guaranteeing lifting stability. Furthermore, the clamping points in other positions are evenly distributed at reasonable intervals, ensuring balanced force distribution on the lifting device for forging bars.

[0008] Furthermore, it also includes at least two spacing adjustment components, with the plurality of spacing adjustment components respectively disposed between two adjacent movable clamps and between the positioning clamp and an adjacent movable clamp.

[0009] This invention, through the spacing adjustment component, on the one hand, prevents the moving clamp from moving along the crossbeam under vibration and other effects, thus affecting the accuracy of the clamping position; on the other hand, it also ensures that the positioning clamp and multiple moving clamps move synchronously, ensuring a smooth lifting process.

[0010] Furthermore, the spacing adjustment assembly includes two sleeved adjustment rods, each with multiple positioning holes along its length, and the same pin passing through the corresponding positioning holes on the two adjustment rods.

[0011] This utility model allows for convenient adjustment of the spacing through two nested adjusting rods.

[0012] Furthermore, both the positioning fixture and the moving fixture include a gripper assembly. The gripper assembly includes two grippers arranged opposite each other, with the middle of the two grippers hinged together. The upper parts of the two grippers are respectively hinged to the lower ends of corresponding connecting rods. The upper ends of the two connecting rods are respectively rotatably connected to the upper crossbar. The upper crossbar is connected to the moving crossbeam. The spacing adjustment assembly is provided between the grippers of the adjacent moving fixture and between the positioning fixture and the grippers of the moving fixture.

[0013] This utility model uses two grippers and two connecting rods to form a clamp-type clamp. On the one hand, it can automatically open to grab the material, reducing manual operation. On the other hand, the clamp-type clamp provides clamping force through the lever principle, which can firmly fix the bar material and prevent it from slipping and causing safety accidents.

[0014] Furthermore, both the positioning fixture and the moving fixture include two gripper assemblies, which are respectively disposed at both ends of the upper crossbar, and a reinforcing bracket is provided between the corresponding grippers of the two gripper assemblies.

[0015] This invention increases the clamping area of ​​the comparison bar by providing two gripper assemblies for the moving clamp and the positioning clamp, thereby further improving the stability of clamping and lifting.

[0016] Furthermore, the positioning fixture also includes a limiting hook and a limiting rod. The limiting hook includes a connecting part and a hook part. The connecting part is rotatably disposed on the lower part of the upper crossbar. The limiting rod is horizontally disposed between the two gripper assemblies and on the side close to the hook part. The hook part can generate sliding friction with the limiting rod, and the limiting hook can engage with the limiting rod.

[0017] This invention, through the use of a limiting hook and a limiting rod, allows the limiting hook and the limiting rod to engage after the gripper assembly releases the bar material and further opens, ensuring that the gripper assembly does not close during the upward movement of the moving crossbeam and thus preventing accidental clamping of the bar material.

[0018] Furthermore, a counterweight is provided on the side of the hook that is away from the limiting rod.

[0019] This invention incorporates a counterweight, making it easier for the hook to rotate downwards and engage with the limiting hook, ensuring timely engagement with the limiting rod.

[0020] Furthermore, the slide groove has a T-shaped cross-section, and the top of the movable clamp is also provided with a slider, which has a T-shaped cross-section, and the head of the slider extends into the slide groove and moves along the slide groove.

[0021] Furthermore, a roller is rotatably provided on the lower surface of the slider head, and the roller rolls and rubs against the groove.

[0022] As can be seen from the above technical solutions, this utility model has the following advantages:

[0023] This utility model provides a hoisting device for forging bars. By combining a positioning clamp, a moving clamp, and a spacing adjustment component, the distribution of clamping positions can be adjusted according to the size of the bar during clamping. This ensures that clamping points are available in the center of bars of various sizes during hoisting, guaranteeing hoisting stability. Furthermore, the clamping points at other positions are evenly distributed at reasonable intervals, ensuring balanced force distribution within the hoisting device. The spacing adjustment component also ensures synchronized operation of the positioning clamp and multiple moving clamps, guaranteeing smooth hoisting. Two nested adjustment rods allow for convenient spacing adjustment. Two grippers and two connecting rods form a clamp-like grip. On the one hand, the clamps can automatically open to grab materials, reducing manual operation. On the other hand, the clamps provide clamping force through the lever principle, which can firmly fix the bar stock and prevent slippage and safety accidents. By setting two jaw assemblies for the moving clamp and the positioning clamp, the clamping area of ​​the bar stock can be increased, further improving the stability of clamping and lifting. With the limit hook and limit rod, after the jaw assembly releases the bar stock and further opens, the limit hook and limit rod can engage, so that the jaw assembly does not close during the upward movement of the moving beam, and will not accidentally clamp the bar stock. By setting a counterweight, the hook can more easily rotate downward and engage with the limit hook, ensuring timely engagement with the limit rod. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 1 .

[0026] Figure 2 This is a structural diagram illustrating a specific embodiment of the present invention. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the structure of the movable clamp in a specific embodiment of this utility model.

[0028] Figure 4 This is a schematic diagram of the positioning fixture in a specific embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the limiting hook in a specific embodiment of the present invention.

[0030] In the diagram, 1. Moving crossbeam; 101. Slide groove; 2. Moving clamp; 3. Positioning clamp; 4. Shaft 1; 5. Spacing adjustment assembly; 501. Adjusting rod; 502. Positioning hole; 503. Pin; 6. Upper crossbar; 7. Connecting rod; 8. Gripper; 9. Reinforcing bracket; 10. Shaft 2; 11. Limiting rod; 12. Limiting hook; 1201. Connecting part; 1203. Counterweight; 1204. Hook; 14. Slider; 15. Roller shaft; 16. Gripper assembly. Detailed Implementation

[0031] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0032] like Figure 1 and Figure 2 As shown in the figure, this specific embodiment provides a hoisting device for forging bars, including a moving beam 1, a positioning clamp 3, and a moving clamp 2. In use, the moving beam 1 is connected to the overhead crane in the workshop. The overhead crane drives the moving beam 1 to move horizontally and lift vertically. The positioning clamp 3 is located at the middle position of the moving beam 1. The positioning clamp 3 cannot move along the length direction of the moving beam 1. When clamping, the position of the positioning clamp 3 and the middle position of the bar can be observed by the naked eye, and the position of the moving beam 1 can be adjusted so that the center positions of the moving beam 1 and the bar are basically coplanar, ensuring that the moving beam 1 and the two ends of the bar are subjected to balanced forces. The bar can be transported horizontally during transfer. The moving beam 1 is provided with two sliding grooves 101, which are symmetrical about the positioning clamp 3. At least two moving clamps 2 are provided, and multiple moving clamps 2 are symmetrically arranged on both sides of the positioning clamp 3. The moving clamps 2 are set in the corresponding sliding grooves 101, and the moving clamps 2 can move along the length direction of the sliding grooves 101.

[0033] This specific embodiment, through the cooperation of positioning clamp 3, moving clamp 2 and spacing adjustment component 5, can adjust the distribution of clamping positions according to the size of the bar stock during clamping, ensuring that clamping points can be set in the middle of bars of various sizes during hoisting, and that clamping points in other positions can be evenly distributed at reasonable intervals, ensuring that the hoisting device for forging bars is subjected to balanced force, that the bars are in a horizontal state, and that hoisting stability is guaranteed.

[0034] To prevent the movable clamp 2 from moving along the movable beam 1 under external force, thus affecting the accuracy of the clamping position adjustment, this embodiment also includes a spacing adjustment component 5. At least two spacing adjustment components 5 are provided, and multiple spacing adjustment components 5 are respectively arranged between two adjacent movable clamps 2 and between the positioning clamp 3 and an adjacent movable clamp 2. Through the spacing adjustment components 5, the position of the movable clamp 2 on the movable beam 1 can be fixed, preventing movement under vibration or other forces that could affect the accuracy of the clamping position. Furthermore, connecting adjacent clamps through the spacing adjustment components 5 ensures that the positioning clamp 3 and multiple movable clamps 2 operate synchronously, guaranteeing a smooth lifting process. In this embodiment, four movable clamps 2 are provided, and eight spacing adjustment components 5 are provided, arranged symmetrically front and back.

[0035] like Figure 1 As shown, to facilitate the adjustment of the spacing adjustment component 5, in this specific embodiment, the spacing adjustment component 5 includes two sleeved adjustment rods 501. Each adjustment rod 501 has multiple positioning holes 502 along its length. A common pin 503 passes through the corresponding positioning holes 502 on the two adjustment rods 501. Both ends of the pin 503 are provided with cotter pins to prevent the pin 503 from falling off. Furthermore, the adjustment rods 501 are made of channel steel, and the two adjustment rods 501 use different widths of channel steel to meet the sleeve requirements. During adjustment, the smaller adjustment rod 501 is pulled to align the corresponding positioning holes 502, and then the pin 503 is installed.

[0036] Because the forged bar stock is at a high temperature, in order to facilitate automatic clamping and reduce manual operation, such as Figure 3 and Figure 4As shown, in this specific embodiment, both the positioning fixture 3 and the moving fixture 2 include a gripper assembly 16. The gripper assembly 16 includes two grippers 8 arranged opposite each other. The middle parts of the two grippers 8 are hinged together by a shaft 4. The upper parts of the two grippers 8 are respectively hinged to the lower ends of the corresponding connecting rods 7 by a shaft 10. The upper ends of the two connecting rods 7 are respectively rotatably connected to the upper crossbar 6. That is, the upper end of the connecting rod 7 is provided with a through hole, and the connecting rod 7 is connected to the upper crossbar 6 through the through hole. The upper crossbar 6 is connected to the moving crossbeam 1. The adjacent moving crossbeam 1... The spacing adjustment assembly 5 is welded between the grippers 8 of the clamp 2 and between the grippers 8 of the positioning clamp 3 and the moving clamp 2. The upper crossbar 6 of the moving clamp 2 is slidably connected to the moving crossbeam 1, and the upper crossbar 6 of the positioning clamp 3 is welded to the moving crossbeam 1. A clamp-type clamp is formed by two grippers 8 and two connecting rods 7. On the one hand, when the clamp-type clamp is lowered to the support surface, the connecting rods 7 and grippers 8 rotate relative to each other as the upper crossbar 6 descends, which can automatically open the clamp to realize material gripping and unloading, reducing manual operation. On the other hand, The clamp-type fixture provides clamping force through the lever principle, which can firmly fix the bar stock and prevent it from slipping and causing safety accidents. Furthermore, both the positioning fixture 3 and the moving fixture 2 include two gripper assemblies 16, which are respectively disposed at both ends of the upper crossbar 6. A reinforcing bracket 9 is provided between the corresponding grippers 8 of the two gripper assemblies 16. This arrangement increases the clamping area of ​​the bar stock, further improving the stability of clamping and lifting. In this specific embodiment, to enhance the stability of the moving fixture 2 and the positioning fixture... With strength 3, the two shafts 4 in the two gripper assemblies 16 of the moving clamp 2 and the positioning clamp 3 are integrated structures, and the two corresponding shafts 10 in the two gripper assemblies 16 of the moving clamp 2 are integrated structures. That is, four grippers 8 are rotatably mounted on one shaft 4, and two grippers 8 and two connecting rods 7 are rotatably mounted on one shaft 10. There are two shafts 10. Through holes are provided at corresponding positions of the grippers 8 and connecting rods 7. Two limit nuts are provided at corresponding positions on the shaft 4 and shaft 10 to prevent the grippers 8 and connecting rods 7 from moving.

[0037] To prevent the gripper assembly 16 from losing support and closing when the moving beam 1 rises, thus avoiding secondary clamping of the transferred bar stock, such as... Figure 4 and Figure 5As shown in this specific embodiment, the positioning clamp 3 further includes a limiting hook 12 and a limiting rod 11. The limiting hook 12 includes a connecting part 1201 and a hook part 1204. The connecting part 1201 is rotatably disposed on the lower part of the upper crossbar 6 via a rotating ring. The limiting rod 11 is horizontally disposed between the two gripper assemblies 16 and on the side close to the hook part 1204. The hook part 1204 can generate sliding friction with the limiting rod 11, and the limiting hook 12 can engage with the limiting rod 11. A counterweight 1203 is provided on the side of the hook part 1204 away from the limiting rod 11. By providing the counterweight 1203, the hook part 1204 can more easily rotate downwards and engage with the limiting hook. 12. The limiting process is as follows: As the moving crossbeam 1 descends, the two grippers 8 of the gripper assembly 16 continuously open, the upper crossbar 6 also continuously descends, and the limiting hook 12 continuously descends. The hook part 1204 of the limiting hook 12 generates sliding friction with the limiting rod 11. As the upper crossbar 6 continues to descend, the hook part 1204 no longer contacts the limiting rod 11, and under the action of the counterweight 1203, it swings towards the limiting rod 11. The hook part 1204 is located at the lower part of the limiting rod 11. When the upper crossbar 6 rises with the moving crossbeam 1, the hook part 1204 engages with the limiting rod 11, so that the distance between the upper crossbar 6 and the limiting rod 11 is fixed. The grippers 8 and the connecting rod 7 cannot rotate to further close, and will no longer clamp the bar material, causing mis-clamping.

[0038] Due to the presence of numerous impurities in the frame, dust easily accumulates inside the moving crossbeam 1. To prevent the moving clamp 2 from jamming with the moving crossbeam 1 during position adjustments, such as... Figure 2 and Figure 3 As shown, in this specific embodiment, the cross-section of the slide groove 101 is T-shaped, and the top of the movable clamp 2 is also provided with a slider 14, which is connected to the upper crossbeam. The cross-section of the slider 14 is T-shaped, and the head of the slider 14 extends into the interior of the slide groove 101 and moves along the slide groove 101. Furthermore, a roller 15 is rotatably provided on the lower surface of the head of the slider 14, and the roller 15 rolls and rubs against the slide groove 101.

[0039] The working process of the hoisting device for this forging bar is as follows:

[0040] First, unlock the spacing adjustment component 5. Based on the length of the bar stock, move the moving clamp 2 to the appropriate clamping position, insert the pin 503, and fix the length of the spacing adjustment component 5. Control the crane to move the moving beam 1 to the top of the bar stock, so that the positioning clamp 3 is aligned with the middle position of the bar stock. Lower the moving beam 1. When the gripper 8 is on the support plate near the bar stock, use the push rod to push the limit hook 12 to one side so that it is no longer engaged with the limit rod 11. Then pull the moving beam 1 up. The moving clamp 2 and the positioning clamp 3 will gradually close, clamping the bar stock. Control the moving beam 1 to hoist the bar stock to the designated position. Lower the moving beam 1. The gripper 8 will contact the support plate or support roller at the corresponding position. The gripper assembly 16 will gradually open as the moving beam 1 descends. The limit hook 12 will descend and then engage with the limit rod 11. Finally, control the moving beam 1 to rise and return to the starting position.

[0041] As can be seen from the above specific embodiments, this utility model has the following beneficial effects:

[0042] 1. By setting up the positioning clamp 3, the moving clamp 2 and the spacing adjustment component 5 together, the distribution of the clamping position can be adjusted according to the size of the bar stock during clamping, so that clamping points can be set in the middle of the bar stock of various sizes during hoisting, ensuring hoisting stability. The clamping points in other positions can be evenly distributed at reasonable intervals, ensuring that the hoisting device for forging bar stock is subjected to balanced force. Furthermore, the spacing adjustment component 5 can also ensure that the positioning clamp 3 and multiple moving clamps 2 move synchronously, ensuring that the hoisting process is smooth.

[0043] 2. The spacing can be easily adjusted by using the two interlocking adjusting rods 501;

[0044] 3. The clamp-type fixture is formed by two jaws and two connecting rods 7. On the one hand, it can automatically open to grab the material, reducing manual operation. On the other hand, the clamp-type fixture provides clamping force through the lever principle, which can firmly fix the bar material and prevent it from slipping and causing safety accidents.

[0045] 4. By providing two gripper assemblies 16 for the moving fixture 2 and the positioning fixture 3, the clamping area of ​​the comparison bar can be increased, further improving the stability of clamping and lifting;

[0046] 5. Through the limiting hook 12 and the limiting rod 11, after the gripper assembly 16 releases the bar and opens further, the limiting hook 12 and the limiting rod 11 engage, so that the gripper assembly 16 does not close during the upward movement of the moving crossbeam 1, and will not accidentally grip the bar.

[0047] 6. By setting the counterweight 1203, the hook 1204 can rotate downward more easily and engage with the limit hook 12, ensuring timely engagement with the limit rod 11.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting device for forging bars, comprising a mobile crosspiece (1), characterised in that, Also include: Positioning clamp (3), the positioning clamp (3) is arranged in the middle position of the moving crossbeam (1), the positioning clamp (3) cannot be moved along the length direction of moving crossbeam (1), the moving crossbeam (1) is provided with two sliding grooves (101), two sliding grooves (101) are symmetrical about the positioning clamp (3); At least two moving clamps (2), the moving clamp (2) is arranged in the corresponding sliding groove (101), the moving clamp (2) can be moved along the length direction of the sliding groove (101).

2. The apparatus of claim 1 wherein, Also include at least two spacing adjustment components (5), a plurality of spacing adjustment components (5) are respectively arranged between adjacent two moving clamps (2) and between the positioning clamp (3) and adjacent moving clamp (2).

3. The apparatus of claim 2 wherein, The spacing adjustment component (5) includes two adjustment rods (501) that are sleeved, a plurality of positioning holes (502) are arranged on the adjustment rod (501) along the length direction of the adjustment rod (501), and the same pin shaft (503) penetrates the corresponding positioning holes (502) on the two adjustment rods (501).

4. The apparatus of claim 3 wherein, The positioning clamp (3) and the moving clamp (2) both include a jaw assembly (16), the jaw assembly (16) includes two jaws (8) oppositely arranged, the middle portions of the two jaws (8) are hingedly connected, the upper portions of the two jaws (8) are respectively hingedly connected with the lower ends of corresponding connecting rods (7), the upper ends of the two connecting rods (7) are respectively rotatably connected with an upper cross rod (6), and the upper cross rod (6) is connected with the moving crossbeam (1).

5. The apparatus of claim 4 wherein, The positioning clamp (3) and the moving clamp (2) both include two jaw assemblies (16), the two jaw assemblies (16) are respectively arranged at the two ends of the upper cross rod (6), and a reinforcing support (9) is arranged between the corresponding jaws (8) of the two jaw assemblies (16).

6. The apparatus of claim 5 wherein, The positioning clamp (3) further includes a limiting hook (12) and a limiting rod (11), the limiting hook (12) includes a connecting portion (1201) and a hook portion (1204), the connecting portion (1201) is rotatably arranged at the lower portion of the upper cross rod (6), the limiting rod (11) is horizontally arranged between the two jaw assemblies (16) and close to one side of the hook portion (1204), the hook portion (1204) can generate sliding friction with the limiting rod (11), and the limiting hook (12) can be clamped with the limiting rod (11).

7. The apparatus of claim 6 wherein, A counterweight (1203) is arranged on one side of the hook portion (1204) away from the limiting rod (11).

8. A lifting device for a forging bar according to any one of claims 1-7, characterized in that The cross section of the sliding groove (101) is in T-shaped structure, the top of the moving clamp (2) is further provided with a sliding block (14), the cross section of the sliding block (14) is in T-shaped structure, and the head of the sliding block (14) extends into the inside of the sliding groove (101) and moves along the sliding groove (101).

9. The apparatus of claim 8 wherein, The slider (14) head lower surface is rotatably provided with a roller shaft (15), and the roller shaft (15) rolls and rubs with the sliding groove (101).

Images