CN219356620U - Lifting pin and flexible lifting mechanism - Google Patents

Abstract

The utility model relates to a lifting pin and a flexible lifting mechanism, wherein the lifting pin is fixed in a flange hole and comprises a pin rod and a limiting pin; the pin rod is of a cylinder structure, a notch is formed in one axial end of the pin rod, and a pin shaft is arranged in the notch in a penetrating mode; the middle part of the limiting pin is provided with a waist-shaped hole, the extending direction of the waist-shaped hole is perpendicular to the axis direction of the pin shaft, the pin shaft is arranged in the waist-shaped hole in a penetrating way, and the limiting pin can rotate around the pin shaft; the outer diameters of the pin rod and the limiting pin are smaller than the inner diameter of the flange hole; the utility model has simple structure and strong universality, does not need to design and manufacture lifting mechanisms for different workpieces independently, reduces the requirement of replacing the lifting mechanisms when the spraying production line changes production, and improves the production efficiency; the number of the lifting pins can be changed and adjusted according to the types of the workpieces, the lifting gesture is flexible, the lifting scheme can be expanded, and the universality is strong.

Description

Lifting pin and flexible lifting mechanism

Technical Field

The utility model relates to the technical field of spraying lifting appliances, in particular to a lifting pin and a flexible lifting mechanism.

Background

In industrial production, in order to prevent the surface of a workpiece from being rusted or to meet the appearance requirement, a spraying process is often used for treating the surface of the workpiece; the spraying process is a coating method of dispersing paint liquid into uniform fog drops through a spray gun or an atomizer to be applied to the surface of an object, so that a workpiece is required to be lifted and hung in advance, and the part needing spraying treatment is fully exposed. For the work piece that the structure is comparatively simple, the quality is less, uses the steel wire to buckle into simple and easy lifting hook and can realize hoist and mount, but to the work piece that the structure is complicated or/and the quality is great then need design dedicated hoist and mount mechanism, so present spraying production line is great to hoist and mount mechanism's change demand when changing to produce, lacks the frock that the universality is stronger, on the one hand changes different hoist and mount mechanisms and can reduce production efficiency, on the other hand because hoist and mount mechanism's limitation, also can increase design and manufacturing cost.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the technical difficulties of low universality and high replacement requirement of the hoisting mechanism for spraying in the prior art, and the hoisting pin and the flexible hoisting mechanism are applicable to workpieces with flange holes, and have the advantages of simple structure and strong compatibility.

In a first aspect, to solve the above technical problem, the present utility model provides a lifting pin, which is fixed in a flange hole, and includes,

the pin rod is arranged into a column structure; a notch is formed in one axial end of the pin rod, and a pin shaft is arranged in the notch in a penetrating manner;

the middle part of the limiting pin is provided with a waist-shaped hole, the extending direction of the waist-shaped hole is perpendicular to the axis direction of the pin shaft, the pin shaft is arranged in the waist-shaped hole in a penetrating way, and the limiting pin can rotate around the pin shaft; the outer diameters of the pin rod and the limiting pin are smaller than the inner diameter of the flange hole.

In one embodiment of the utility model, the limiting pin comprises two pin plates spliced with each other, a concave part is arranged in the middle section of the splicing surface of the pin plates, and the corresponding concave parts after the two pin plates are spliced to form the waist-shaped hole.

In one embodiment of the utility model, threaded through holes are formed in two ends of the pin plates, and the two pin plates are fixed through the threaded through holes after being spliced.

In one embodiment of the present utility model, pin heads are formed on both sides of the recess portion on the pin plate, and a linear length of the pin heads along an extension direction of the kidney-shaped hole is smaller than a depth of the notch.

In one embodiment of the utility model, the extension of the stop pin is greater than the inner diameter of the flange hole.

In a second aspect, the utility model also provides a flexible lifting mechanism for lifting a workpiece with flange holes, which comprises a sling and a lifting pin as described in the embodiment, wherein one end of the lifting pin is connected with the sling.

In one embodiment of the utility model, a first ring is arranged at one end of the pin away from the notch in a penetrating way, and the first ring is sleeved with a second ring at the end part of the sling.

In one embodiment of the utility model, the hanger comprises at least three lifting pins, and one sling is connected to the end of the pin rod of each lifting pin, which is far away from the notch.

In one embodiment of the utility model, at least three of the lifting pins and the slings connected thereto form a lifting space, the centre of mass of the workpiece being located in the lifting space.

In one embodiment of the utility model, the lifting device further comprises a lifting platform, one end of the sling is connected with the lifting pin, and the other end of the sling is fixed on the lifting platform.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the lifting pin and the flexible lifting mechanism, the waist-shaped hole in the limiting pin is used as the sliding groove of the pin shaft, so that the pin rod and the limiting pin can move relatively, and the lifting pin passes through the flange hole and then lifts a workpiece by utilizing the limiting effect of the limiting pin; the utility model simplifies the complex-structure workpiece into the combination of the flange plate and the workpiece main body, is suitable for hoisting the workpiece with the flange hole, has simple structure and strong universality, does not need to independently design and manufacture hoisting mechanisms aiming at different workpieces, and saves cost; the requirement of replacing the hoisting mechanism when the spraying production line changes production is reduced, and the production efficiency is improved; the utility model has smaller contact area with the workpiece during hoisting, is suitable for spraying operation, and the number of the hoisting pins can be changed and adjusted according to the type of the workpiece, so that the hoisting gesture is flexible, the hoisting scheme can be expanded, and the universality is strong.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:

FIG. 1 is a schematic view of a lifting pin and a first ring according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the lifting pin and the first ring after assembly according to the embodiment of the utility model;

FIG. 3 is a schematic view of a limiting pin according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a flexible hoisting mechanism in an embodiment of the utility model;

FIG. 5 is a schematic view of a lifting gesture of the flexible lifting mechanism of FIG. 4 in use;

fig. 6 is a schematic view of another lifting gesture of the flexible lifting mechanism of fig. 4 in use.

Description of the specification reference numerals: 1. a lifting pin; 2. a pin rod; 21. a notch; 22. a first ring; 3. a limiting pin; 31. a pin plate; 32. a waist-shaped hole; 33. a recessed portion; 34. a screw; 35. a pin head; 4. a pin shaft; 5. a sling; 51. a second ring; 6. a flange hole; 61. a workpiece; 7. and (5) hoisting the platform.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Example 1

Referring to fig. 1 to 6, the present utility model provides a lifting pin 1 which can be fixed in a flange hole 6, wherein the lifting pin 1 comprises a pin rod 2 and a limiting pin 3; the outer diameters of the pin rod 2 and the limiting pin 3 are smaller than the inner diameter of the flange hole 6, after one side of the lifting pin 1 penetrates into the flange hole 6, the limiting pin 3 rotates to limit the other side of the flange hole 6, and the extending length of the limiting pin 3 is larger than the inner diameter of the flange hole 6.

Specifically, referring to fig. 1 and 2, the pin 2 is configured as a cylindrical structure, one end of the pin is provided with a notch 21, and the notch 21 extends from one end to the middle along the axis direction; the pin rod 2 further comprises a pin shaft 4, the pin shaft 4 is arranged in the notch 21 in a penetrating mode and connected with the end faces on two sides of the notch 21, and the pin shaft 4 is perpendicular to the axis direction of the pin rod 2.

Specifically, referring to fig. 1 to 3, a waist-shaped hole 32 is provided in the middle of the limiting pin 3, the length direction of the waist-shaped hole 32 is parallel to the extending direction of the limiting pin 3, and in one embodiment, the waist-shaped hole 32 is disposed along the axis of the length direction of the limiting pin 3. Specifically, the pin 4 is inserted into the waist-shaped hole 32, and the pin 4 can slide in the waist-shaped hole 32, and when the pin 4 generates relative displacement in the waist-shaped hole 32, the limiting pin 3 can slide out from the notch 21 of the pin rod 2 or/and rotate around the pin 4 in the notch 21.

Further, in some embodiments, referring to fig. 3, the limiting pin 3 includes two identical pin plates 31 that are spliced with each other, a concave portion 33 is disposed in a middle section of a splicing surface of the pin plates 31, two ends of the concave portion 33 are protruded to form a pin head 35, and end surfaces of the protruding portions of the two ends are horizontally disposed and internally provided with threaded through holes; the two pin plates 31 can be installed in a butt joint mode, horizontal end faces of pin heads 35 at two ends of the two pin plates 31 are attached, hole positions of threaded through holes are opposite, the two pin plates 31 are installed in a butt joint mode and fixed through the threaded through holes in a connecting mode through screws 34, the two concave portions 33 are spliced relatively to form the waist-shaped holes 32 after installation is completed, and the threaded through holes are located at two ends of the length direction of the waist-shaped holes 32. In this embodiment, the limiting pin 3 is configured as a split design of the two pin plates 31, which reduces processing difficulty and facilitates assembly, and in some embodiments, the two pin plates 31 may be configured as other detachable connection manners.

Further, the pin 4 is disposed at an open end of the notch 21, a distance between the pin 4 and a closed end of the notch 21 is set to be the depth of the notch 21, and a linear length of the pin head 35 along the extending direction of the kidney-shaped hole 32 is smaller than the depth of the notch 21; the pin shaft 4, the end surfaces of the two sides of the notch 21 and the closed end provide avoidance space for the side pulling or/and rotation of the limiting pin 3.

Further, in some embodiments, referring to fig. 1 and 2, one end of the pin rod 2 connected with the limiting pin 3 is provided as a cylinder, one end far away from the limiting pin 3 is provided as a prism, and when the limiting pin 3 contacts the flange hole 6 for limiting, the cylinder contacts with the orifice and the inside of the flange hole 6, so that the flange hole 6 is prevented from being damaged when the force is exerted by lifting; the end far away from the limiting pin 3 is preferably designed to be a regular quadrangular prism, so that the die sinking processing of the pin rod 2 is facilitated. In a preferred embodiment, the pin rod 2 is integrally formed, so that the assembly steps are reduced, and the pin shaft 4 is not easy to deform or damage when being stressed.

Example two

Referring to fig. 4, 5 and 6, the present utility model further provides a flexible hoisting mechanism for hoisting a workpiece 61 having a flange hole 6, which includes a hoisting cable 5 and the hoisting pin 1 according to the above embodiment, wherein one end of the hoisting cable 5 is connected to one end of the hoisting pin 1, the hoisting cable 5 applies force to hoist on one side of the flange hole 6, and the limiting pin 3 fixes a flange on the opposite side of the hoisting cable 5.

Further, referring to fig. 4, the flexible hoisting mechanism further includes a hoisting platform 7, one end of the sling 5 is connected to the hoisting pin 1, and the other end of the sling 5 is fixed to the hoisting platform 7; the opposite pulling force is applied to the two ends of the sling 5 to tension the sling 5, when the sling 5 is tensioned in the vertical direction or the included angle between the sling 5 and the pin rod 2 is an obtuse angle, the limiting pin 3 can rotate freely relative to the pin shaft 4, and the limiting pin 3 can rotate easily to a position parallel to the pin rod 2 or a smaller included angle with the pin rod 2, so that the workpiece 61 slips; in the preferred embodiment of the present utility model, therefore, the angle between the extending direction of the sling 5 and the pin 2 is an acute angle when the sling 5 lifts the workpiece 61, and the sling 5 is fixed at the same point of the lifting platform 7; in some embodiments, the end of the sling 5 remote from the lifting pin 1 is provided with a fixed ring, which is fixed to the same position of the lifting platform 7 or to another mechanical device such as a hook.

Specifically, in the embodiment of the present utility model, one end of each lifting pin 1 is connected to one lifting cable 5; one lifting pin 1 and one lifting cable 5 are combined into one lifting mechanism monomer, and one flange hole 6 corresponding to the workpiece 61 is used as a lifting point. Referring to fig. 5 and 6, when the flange is lifted through the fixing flange hole 6, the flange on one side of the workpiece 61 may be lifted, or lifting points may be simultaneously set on the flanges on both sides of the workpiece 61; it should be noted that when one or two hanging points are provided, although the workpiece 61 can be hung, the workpiece 61 is easy to deflect or displace in the spraying process, and the hanging effect is unstable and is not beneficial to the spraying operation; the flexible hoisting mechanism comprises at least three hoisting mechanism monomers, and at least three hoisting points are arranged on the workpiece 61 to form a triangular stable structure; simultaneously three hoist and mount mechanism monomer can encircle and form the hoist and mount space, set up the hoisting point the barycenter of work piece 61 is located hoist and mount space is inside, hoist and mount holding power is stronger, hoist and mount effect is stable, and work piece 61 is difficult for deflecting or rocking, does benefit to the spraying. Referring to fig. 5 and 6, in a preferred embodiment of the present utility model, the number of the hoisting mechanism monomers is preferably four; in some embodiments, the number and the setting positions of the hoisting mechanism monomers can be adjusted and replaced according to the difference of the mass center position and the flange position of the workpiece 61, so that the mass center of the hoisting workpiece 61 is only required to be located in the hoisting space, and the setting of the hoisting mechanism monomers is not limited to the above; meanwhile, the sling 5 is used for applying force to enable the workpiece 61 to be in a flexible lifting posture, various lifting schemes can be combined, compared with a rigid lifting tool, the lifting tool is more universal, the requirements of more lifting tools are met, and the production cost is saved.

Further, referring to fig. 4 to 6, a first ring 22 is inserted through one end of the pin 2 away from the notch 21, and the first ring 22 is sleeved with a second ring 51 at the end of the sling 5, so that the direction of the tensioning state of the sling 5 can be adjusted at will, and the lifting space can be adjusted conveniently. In some embodiments, the pin 2 and the sling 5 may be connected by other connection methods, not limited thereto, which can meet the direction adjustment requirement.

The working principle of the flexible hoisting mechanism provided by the embodiment of the utility model is as follows:

before assembly, the number of lifting pins 1 and slings 5 required and the position of the lifting points are determined according to the mass, volume, centroid position, spraying position and flange plate mounting position of the workpiece 61. The pin heads 35 are abutted and attached, the pin shafts 4 are arranged in the waist-shaped holes 32 in a penetrating mode, and the pin plates 31 are fastened through the screws 34; the extending direction of the stopper pin 3 is adjusted to be parallel to the pin rod 2.

In the assembly process, one end of the limiting pin 3 of the lifting pin 1 is extended into the flange hole 6, the extending direction of the limiting pin 3 is adjusted to be vertical to the pin rod 2 after the limiting pin 3 is completely extended, the limiting pin 3 is in contact with the flange hole 6 for limiting, and the end face or the opposite side end face of the limiting pin 3, through which the screw 34 is penetrated, is in contact with the surface of the flange plate where the flange hole 6 is located; when the screw head of the pin plate 31 is fixed to protrude from the end face thereof, it is preferable that the end face opposite to the end face on which the screw head is located is in contact with the flange, so that the protruding screw head is prevented from damaging the work 61. Meanwhile, the extension length of the limiting pin 3 is larger than the aperture of the flange hole to perform a limiting function, the sling 5 is fixed and tensioned to finish hoisting, the contact area of the hoisting mechanism and the workpiece 61 is small, and the spraying effect and the spraying quality of the workpiece 61 are ensured.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A lifting pin fixed in a flange hole, which is characterized by comprising,

the pin rod is arranged into a column structure; a notch is formed in one axial end of the pin rod, and a pin shaft is arranged in the notch in a penetrating manner;

the middle part of the limiting pin is provided with a waist-shaped hole, the extending direction of the waist-shaped hole is perpendicular to the axis direction of the pin shaft, the pin shaft is arranged in the waist-shaped hole in a penetrating way, and the limiting pin can rotate around the pin shaft; the outer diameters of the pin rod and the limiting pin are smaller than the inner diameter of the flange hole.

2. A lifting pin according to claim 1, wherein: the limiting pin comprises two pin plates which are spliced with each other, a concave part is arranged in the middle section of the splicing surface of the pin plates, and the concave parts corresponding to the spliced two pin plates are spliced to form the waist-shaped hole.

3. A lifting pin according to claim 2, characterized in that: the two ends of the pin plates are respectively provided with a threaded through hole, and the two pin plates are fixed through screws and the threaded through holes after being spliced.

4. A lifting pin according to claim 2, characterized in that: the pin plate is provided with pin heads on two sides of the concave part, and the linear length of the pin heads along the extending direction of the kidney-shaped hole is smaller than the depth of the notch.

5. A lifting pin according to claim 1, wherein: the extension length of the limiting pin is larger than the inner diameter of the flange hole.

6. A flexible hoisting mechanism for hoisting a workpiece with a flange hole, comprising a hoisting rope and a hoisting pin according to any one of claims 1-5, wherein one end of the hoisting pin is connected to the hoisting rope.

7. The flexible lifting mechanism of claim 6, wherein: the pin rod is far away from one end of the notch and is provided with a first circular ring in a penetrating mode, and the first circular ring is sleeved with a second circular ring at the end portion of the sling.

8. The flexible lifting mechanism of claim 6, wherein: the lifting device comprises at least three lifting pins, wherein one end, far away from the notch, of a pin rod of each lifting pin is connected with one lifting cable.

9. A flexible lifting mechanism as claimed in claim 8, wherein: at least three lifting pins and the slings connected with the lifting pins form a lifting space, and the mass center of the workpiece is located in the lifting space.

10. The flexible lifting mechanism of claim 6, wherein: the lifting device further comprises a lifting platform, one end of the sling is connected with the lifting pin, and the other end of the sling is fixed on the lifting platform.