Lifting hook tool for avoiding scratches

Abstract

The utility model relates to a lifting hook tool for avoiding scratches. The lifting hook tool comprises a lifting ring, a supporting rod and a lifting hook connecting rod. The lifting ring is connected with a crane. The supporting rod fixes a lifting hook used for making contact with a workpiece through a lifting hook connecting rod. The supporting rod is a hollow steel pipe, the lifting hook connecting rod is of a cylindrical structure, the upper portion of the lifting hook connecting rod is connected with the supporting rod, parallel assembling faces are arranged on the two symmetrical sides of the lower portion of the lifting hook connecting rod respectively, and through holes used for fixing lifting hooks are formed in the assembling faces. The lifting hook at least comprises a low-hardness lifting hook main body plate as well as a supporting plate A and a supporting plate B which are used for reinforcing the lifting hook main body plate. And a fixed cross bar for forming a stable structure is arranged between the supporting rods. The lifting hook tool can effectively avoid scratches on the surface of a workpiece in the lifting process, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a hook tool for avoiding scratches, belonging to the field of shaft parts hoisting tool. Background Art

[0002] With the development of science and technology, customers have increasingly higher requirements for engine performance, especially for the precision of camshafts in engines. This includes high requirements for the roughness, color and texture consistency of the camshaft main shaft and cam surface. However, traditional hoisting methods can no longer meet the ultimate requirements of these products.

[0003] There is no clear regulation on the traditional lifting position of the hook, as long as the lifting is balanced. This will result in the lifting position being any part of the cam or spindle surface, resulting in inconsistent color marks on the spindle surface, or slight hook marks on the cam surface. In order to ensure the final surface quality of the product, the lifting position cannot be placed in this position during the production process, and can only be lifted on the non-polished part of the camshaft, that is, the rod part between adjacent cams.

[0004] However, some camshaft products have a small width between adjacent cams and the workpiece has a certain weight. If the hook is made of round steel that is too small, it can be hoisted normally, but the hook cannot meet the strength requirements. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a hook tooling for avoiding scratches. The utility model can meet the requirements of small adjacent spacing of camshafts and easy processing, ensure the strength requirements of the hook, and at the same time avoid contact between other metal parts of the hook and products to cause scratches.

[0006] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a hook tooling for avoiding scratches, comprising at least a lifting ring for connecting with a crane, a pair of mutually parallel support rods are arranged below the lifting ring, and the support rods are fixed to the hook for contacting the workpiece through a hook connecting rod;

[0007] The support rod is a hollow steel pipe, the hook connecting rod is a cylindrical structure, the upper part of the hook connecting rod is connected to the support rod, and the lower part of the hook connecting rod is symmetrically provided with mutually parallel assembly surfaces on both sides, and the assembly surfaces are provided with through holes for fixing the hook;

[0008] The length of one side of the hook connecting rod assembly surface is greater than the other side, and the two assembly surfaces are respectively a short assembly surface and a long assembly surface, wherein the short assembly surface is provided with a through hole, and the upper portion of the long assembly surface is tapped with a threaded through hole;

[0009] The hook at least comprises a hook main body plate with low hardness and support plates A and B for reinforcing the hook main body plate. The hook main body plate is a semicircular ring, and a fixing hole matching the support plates A and B is provided at the lower part of the hook main body plate.

[0010] The support plate A and the support plate B both include a semicircular support portion and a rectangular fixing portion, wherein the semicircular support portion and the rectangular fixing portion of the support plate A are both provided with threaded holes, and the length of the rectangular fixing portion matches the short assembly surface of the hook connecting rod; the semicircular support portion and the rectangular fixing portion of the support plate B are both provided with through holes, and the length of the rectangular fixing portion matches the long assembly surface of the hook connecting rod.

[0011] A fixed cross bar is arranged between the support rods to form a stable structure.

[0012] The upper part of the hook connecting rod is a plug connecting part, and the diameter of the plug connecting part matches the inner diameter of the support rod.

[0013] The assembly surface has the same depth relative to the cylindrical surface, and the width of the assembly surface matches the width of the support plate A and the support plate B.

[0014] The hook main body plate is made of non-metallic nylon material whose hardness is lower than that of the workpiece, and the width of the hook main body plate matches the width between the rod parts between adjacent cams of the workpiece.

[0015] The radial distance between the hook body plate and the support plates A and B is not less than the width of the camshaft.

[0016] According to the above technical solution, the hook tooling for avoiding scratches provided by the utility model includes a lifting ring, a support rod and a hook connecting rod. The lifting ring is connected to the crane, and the support rod is fixed to the hook for contacting the workpiece through the hook connecting rod. The low-hardness hook main body plate is in contact with the non-polished surface of the workpiece to realize the lifting operation, wherein the support rod is a hollow steel pipe, and a fixed cross bar is provided between the support rods to form a stable structure. The hook includes at least a low-hardness hook main body plate and support plates A and B for reinforcing the hook main body plate. Compared with the prior art, the utility model has the following advantages:

[0017] (1) Because the hook of the technical solution adopted by the utility model adopts a split structure, it can maintain stability through assembly while adopting a lower contact area. The main plate of the hook used to contact the workpiece is made of nylon, a non-metallic material with a lower hardness than the workpiece. Therefore, the utility model does not contact the finely processed surface during lifting, and can avoid bumps and scratches on the workpiece spindle and cam surface while meeting the strength requirements of the hook.

[0018] (2) Because the technical solution adopted by the utility model adopts a low-hardness nylon plate as the nylon plate, and the support rod is fixed by welding with a hollow steel pipe, the utility model can meet the requirements of small adjacent spacing of the camshaft and easy processing, and meet the strength requirements of the hook while reducing the overall mass, with a simple structure, easy use, and low material and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the hook tooling used to avoid scratches.

[0020] Figure 2 It is a schematic diagram of the hook connecting rod and hook assembly.

[0021] Figure 3 It is a schematic diagram of the hook connecting rod.

[0022] Figure 4 This is a schematic diagram of the hook main body plate.

[0023] Figure 5 Schematic diagram of support plate A.

[0024] Figure 6 Schematic diagram of support plate B.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the hook tooling.

[0026] Figure 8 It is a partial enlarged schematic diagram of the cross section of the lifting hook for hoisting workpieces.

[0027] In the figure: 1. lifting eye; 2. supporting rod; 21. fixing cross bar; 3. hook connecting rod; 31. plug connecting part; 32. long assembly surface; 33. short assembly surface; 4. hook; 41. hook main body plate; 42. supporting plate A; 43. supporting plate B; 5. supporting part fixing bolt; 51. semicircular ring supporting part of supporting plate A; 52. semicircular ring supporting part of supporting plate B; 6. fixing bolt of fixing part; 61. fixing part of supporting plate A; 62. fixing part of supporting plate B; 7. workpiece; 71. rod part between adjacent cams. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0029] In the technical solution provided by the utility model, a hook tooling for avoiding scratches is provided, such as Figure 1As shown, it at least includes a lifting ring 1 for connecting to a crane, a pair of supporting rods 2 parallel to each other are provided below the lifting ring 1, and the supporting rods 2 are fixed with a hook 4 for contacting a workpiece 7 through a hook connecting rod 3; the supporting rods 2 are hollow steel pipes, and a fixed horizontal bar 21 for forming a stable structure is provided between the supporting rods 2.

[0030] like Figure 2 and Figure 3 As shown, the hook connecting rod 3 is a cylindrical structure, and the upper part of the hook connecting rod 3 is connected to the support rod 2. In this embodiment, the upper part of the hook connecting rod 3 is a plug connecting part 31, and the diameter of the plug connecting part 31 matches the inner diameter of the support rod 2. The hook connecting rod 3 and the support rod 2 are welded to form a stable structure.

[0031] The lower part of the hook connecting rod 3 is symmetrically provided with mutually parallel assembly surfaces on both sides, and the assembly surfaces are provided with through holes for fixing the hook 4; the assembly surfaces are at the same depth relative to the cylindrical surface, and the width of the assembly surfaces matches the width of the support plates A42 and B43.

[0032] In this embodiment, if Figure 3 As shown, the length of one side of the assembly surface of the hook connecting rod 3 is greater than the other side, and the two assembly surfaces are respectively a short assembly surface 33 and a long assembly surface 32, wherein the short assembly surface 33 is provided with a through hole, and the upper part of the long assembly surface 32 is tapped with a threaded through hole;

[0033] The hook 4 at least comprises a hook main body plate 41 with low hardness and a support plate A42 and a support plate B43 for reinforcing the hook main body plate 41. The hook main body plate 41 is a semicircular ring. Figure 4 As shown, the hook body plate 41 is made of non-metallic nylon material with a lower hardness than the workpiece 7, and the width of the hook body plate 41 matches the width between adjacent cam rods 71 ​​of the workpiece 7. The radial distance between the hook body plate 41 and the support plate A42 and the support plate B43 is not less than the width of the camshaft.

[0034] The lower part of the hook body plate 41 is provided with fixing holes matching with the support plate A42 and the support plate B43. Figure 5 and Figure 6 As shown, the support plate A42 and the support plate B43 both include a semicircular support portion and a rectangular fixing portion, wherein the semicircular support portion 51 of the support plate A and the fixing portion 61 of the support plate A are both threaded holes, and the length of the rectangular fixing portion matches the short assembly surface 33 of the hook connecting rod 3; the semicircular support portion 52 of the support plate B and the fixing portion 62 of the support plate B are both through holes, and the length of the rectangular fixing portion matches the long assembly surface 32 of the hook connecting rod 3.

[0035] In this embodiment, the semicircular support portion 51 of the support plate A, the lower part of the hook body plate 41 and the semicircular support portion 52 of the support plate B are fixed by the support portion fixing bolts 5 to form a complete support portion, wherein the support portion fixing bolts 5 pass through the semicircular support portion 52 of the support plate B and the through holes at the lower part of the hook body plate 41 and are screwed into the threaded holes of the semicircular support portion 51 of the support plate A for fastening. The fixing portion fixing bolts 6 are used to fix the fixing portion 61 of the support plate A, the hook connecting rod 3 and the fixing portion 62 of the support plate B to form a complete fixing portion, wherein the two fixing portion fixing bolts 6 at the bottom pass through the fixing portion 62 of the support plate B and the through holes of the hook connecting rod 3 and are screwed into the threaded holes of the fixing portion 61 of the support plate A for fastening, and the uppermost fixing portion fixing bolt 6 passes through the fixing portion 62 of the support plate B and is screwed into the threaded holes of the hook connecting rod 3 for fastening, so that the support plate A42, the hook body plate 41, the support plate B43 and the hook connecting rod 3 form a complete whole, as shown in FIG. Figure 2 shown.

[0036] When the utility model is used, Figure 7 and Figure 8 As shown, the lifting ring 1 of the hook tool is connected to the crane, and the two hook body plates 41 are hooked into the adjacent cam rod parts 71 designated by the camshaft workpiece 7, that is, the designated non-polished part, and the workpiece 7 is lifted by the crane.

Claims

1. A hook tool for avoiding scratches, comprising at least a lifting ring for connecting with a crane, characterized in that: A pair of supporting rods parallel to each other are provided below the lifting ring, and the supporting rods are fixed to the lifting hook for contacting the workpiece through the lifting hook connecting rod; The support rod is a hollow steel pipe, the hook connecting rod is a cylindrical structure, the upper part of the hook connecting rod is connected to the support rod, and the lower part of the hook connecting rod is symmetrically provided with mutually parallel assembly surfaces on both sides, and the assembly surfaces are provided with through holes for fixing the hook; The length of one side of the hook connecting rod assembly surface is greater than the other side, and the two assembly surfaces are respectively a short assembly surface and a long assembly surface, wherein the short assembly surface is provided with a through hole, and the upper portion of the long assembly surface is tapped with a threaded through hole; The hook at least comprises a hook main body plate with low hardness and support plates A and B for reinforcing the hook main body plate. The hook main body plate is a semicircular ring, and a fixing hole matching the support plates A and B is provided at the lower part of the hook main body plate. The support plate A and the support plate B both include a semicircular support portion and a rectangular fixing portion, wherein the semicircular support portion and the rectangular fixing portion of the support plate A are both provided with threaded holes, and the length of the rectangular fixing portion matches the short assembly surface of the hook connecting rod; the semicircular support portion and the rectangular fixing portion of the support plate B are both provided with through holes, and the length of the rectangular fixing portion matches the long assembly surface of the hook connecting rod.

2. The hook tool for avoiding scratches according to claim 1, characterized in that: A fixed cross bar is arranged between the support rods to form a stable structure.

3. The hook tool for avoiding scratches according to claim 1, characterized in that: The upper part of the hook connecting rod is a plug connecting part, and the diameter of the plug connecting part matches the inner diameter of the support rod.

4. The hook tool for avoiding scratches according to claim 1, characterized in that: The assembly surface has the same depth relative to the cylindrical surface, and the width of the assembly surface matches the width of the support plate A and the support plate B.

5. The hook tool for avoiding scratches according to claim 1, characterized in that: The hook main body plate is made of non-metallic nylon material whose hardness is lower than that of the workpiece, and the width of the hook main body plate matches the width between the rod parts between adjacent cams of the workpiece.

6. The hook tool for avoiding scratches according to claim 1, characterized in that: The radial distance between the hook body plate and the support plates A and B is not less than the width of the camshaft.

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