CN215101476U - Telescopic lifting appliance - Google Patents

Abstract

The utility model relates to a retractable hoist, including hoist main part, telescopic machanism, balance mechanism, telescopic machanism includes telescopic link, backup pad, the both ends of hoist main part are connected with respectively the telescopic link, the telescopic link can stretch out and draw back in the hoist main part, the one end of telescopic link is connected the hoist main part, the other end is connected the backup pad, the central point of hoist main part puts both sides symmetry respectively and sets up balance mechanism, balance mechanism with the hoist main part is connected perpendicularly. The utility model discloses overcome the easy rub-off of traditional hoist handling core in-process, the production operation process is loaded down with trivial details, the drawback of labour wasting of resources, realize that the solid of revolution psammitolite steadily lifts by crane the core down, reduce the foundry goods rub-off, easy operation, extensive applicability.

Description

Telescopic lifting appliance

Technical Field

The utility model relates to a hoist, in particular to retractable hoist that sand core lifted by crane and core down for casting.

Background

In the casting core setting process, the core with the weight of the revolving body sand core larger than 20KG is too large or can not be finished by manual carrying, and two methods are used for solving the problem at present. One method is to directly use the sling to bind and lift the core, and the sling is drawn out after the core is laid, the method requires a gap between the core and the outer skin, namely the wall thickness of the casting, and the sling does not pass through a core head and is limited by the core structure, and meanwhile, potential safety hazards exist, so that the method is rare in the actual production; another method is to embed a core nose folded by a steel bar in advance in the core making process, and when the core is placed in a box, the core nose is dug to be embedded into a lifting hook to lift and place the core. According to the method, the core nose is manually placed, the problem of plug deviation exists in the compacting process, errors exist, the core is not hung flatly, the core needs to be pressed tightly during core setting, so that the core is convenient to set, sand rubbing is easy to occur on castings with high precision requirements and complex structures, cavities are difficult to clean, the surface of the core is supplemented by sand after the core is set, the operation is complex, the efficiency is low, the repairing quality is poor, the appearance of the castings is poor, the castings have much pulp or lack of pulp, and the subsequent cleaning process is complex.

SUMMERY OF THE UTILITY MODEL

The utility model discloses overcome the easy rub-out of traditional hoist handling coring in-process, the production operation process is loaded down with trivial details, the drawback of labour wasting of resources, provide a retractable hoist, realize that the solid of revolution psammitolite steadily lifts by crane coring, reduce the foundry goods rub-out, improve foundry goods appearance quality, use easy operation, avoid the complicated cleaning process in later stage, improve production efficiency.

A telescopic lifting appliance comprises a lifting appliance main body, a telescopic mechanism and a balance mechanism, wherein the telescopic mechanism comprises a telescopic rod and a supporting plate; the two ends of the hanger main body are respectively connected with the telescopic rods; the telescopic rod can be stretched on the hanger main body, one end of the telescopic rod is connected with the hanger main body, and the other end of the telescopic rod is connected with the supporting plate; the two sides of the center position of the lifting appliance main body are respectively and symmetrically provided with the balance mechanisms, and the balance mechanisms are vertically connected with the lifting appliance main body and carry out balance adjustment on the lifting appliance main body.

Optionally, the spreader body comprises a sleeve, a hook and a pull rod. The sleeve is a long pipe, the lifting hook is vertically arranged at the center of the sleeve, and the pull rods are respectively arranged at two sides of the sleeve and connected with the lifting hook.

Optionally, the telescopic mechanism comprises a telescopic rod and a support plate, the telescopic rod is telescopically connected with the sleeve, and the other side of the telescopic rod is connected with the support plate and is of a T-shaped connecting structure. And reinforcing ribs are also arranged between the supporting plate and the telescopic rod.

Optionally, the telescopic spreader further comprises a locking member, and the spreader body and the telescopic mechanism can be fixed between the telescopic rod and the casing pipe through the locking member.

Optionally, the balancing mechanism comprises a balancing screw and a balancing nut. The balance mechanism is symmetrically arranged on two sides of the center of the lifting appliance main body, the vertical lifting hook is fixedly connected onto the sleeve, one end of the balance screw is fixedly connected with the sleeve, the other end of the balance screw is connected with the balance nut, and the balance nut can be rotated inwards or outwards along the balance screw.

The utility model provides a retractable hoist, through core self structure and hoist interact and handling core, the leveling through balance mechanism makes core perpendicular to die cavity and core head, can reduce the sand smearing between uneven and the die cavity of core, through the clearance fit between the bracing piece that sets up on the telescopic machanism and the sleeve pipe in the hoist main part, can satisfy not unidimensional psammitolite. The invention solves the problems of low efficiency, waste of cost and quality defects, improves the production efficiency by using the device, reduces the phenomenon of sand smearing in the core setting process, and has simple use method and wide applicability.

Drawings

FIG. 1: telescopic lifting appliance schematic diagram

FIG. 2: hoisting schematic diagram

Wherein, 1-a hook; 2-a left pull rod; 3-balance nut one; 4-balancing the first screw rod; 5, a first telescopic rod; 6, supporting a plate I; 7-stretching the first lacing wire; 8-stretching a second rib; 9-locking the first nut; 10-balance screw II; 11-balance nut two; 12-locking a second nut; 13-a right pull rod; 14-a sleeve; 15-a second telescopic rod; 16-a second support plate; 17-lacing a third rib; 18-lacing wire four; 19-Sand core.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described in detail with reference to the following specific embodiments. It should be noted that the following described embodiments are exemplary only, and are not to be construed as limiting the invention.

A telescopic lifting appliance comprises a lifting appliance main body, a telescopic mechanism and a balance mechanism, wherein as shown in figure 1, the lifting appliance main body comprises a sleeve 110 and a lifting hook 120, the sleeve 110 is made of deformed steel bars, and the deformed steel bars have higher strength than common steel bars and are used as the lifting appliance main body to ensure the strength; the sleeve 110 is a hollow tube, and threaded holes are uniformly arranged at intervals of 10cm outside 5cm away from the end heads at the two sides; a hook 120 is connected to the middle of the sleeve 110. The pull rod 130 is further arranged between the lifting hook 120 and the sleeve 110, the pull rod 130 is arranged 15cm away from the arc tail end of the lifting hook 120, lifting interference is prevented, the pull rod 130 is arranged on two sides of the lifting hook 120 and connected with two ends of the sleeve 140 respectively, the pull rod and the sleeve form a regular triangle, overall stability is best, strength of the sleeve and the lifting hook is improved, and lifting deformation is prevented.

The telescopic mechanism comprises telescopic rods 210 and supporting plates 220, the telescopic mechanisms are arranged on two sides of the hanger main body, specifically, the telescopic rods 210 are arranged on two sides of the sleeve, namely, the telescopic rods 210 are respectively nested in two ends of the sleeve 110, the telescopic rods 210 are positioned in the sleeve 110 and are provided with threaded holes every 10cm, and the telescopic rods 210 are ensured to correspond to the threaded holes of the sleeve; the supporting plate 220 and the telescopic rod 210 are arranged in a T shape, the supporting plate 220 is arc-shaped, the lifting tool can be prevented from damaging the sand core due to the arc-shaped arrangement, the reinforcing ribs 230 are arranged on the side edges of the supporting plate and the telescopic rod 220 at the same angle, the reinforcing ribs 230 increase the strength of the supporting plate 220, meanwhile, the contact area of the supporting plate and the sand core is increased, the lifting is more stable, and the part of the supporting plate, which is embedded into the lifting sand core, is a flat and smooth table top at the lower surface of the sand core; according to the weight and the diameter of the sand core, the length of the telescopic rod 210 is confirmed and limited by the locking nut 240, the telescopic rod 210 and the sleeve 110 are fixedly connected together, and at least one group of locking nuts 240 is arranged on the telescopic rod 210 on one side to ensure fixing and locking.

A group of symmetrical balance mechanisms are horizontally arranged on two sides of the middle position of the sleeve 110, each balance mechanism comprises a balance screw 310 and a balance nut 320, one end of each balance screw 310 is vertically and fixedly connected with the sleeve 110, the other end of each balance screw is connected with the balance nut 320, and if the lifting sand core inclines towards the balance mechanism on one side, the balance nuts on the two sides can be adjusted to level. If the lifting sand core inclines to one side, the balance nuts on the symmetrical sides can be rotated outwards or the balance nuts on the inclined sides can be rotated inwards so as to level, and balance in the process of transporting the core is ensured. In this embodiment, the balance screw 310 is made of steel with a diameter of 25mm, a threaded hole is formed in the outer side of the balance screw, the balance nut 320 is in the shape of a truncated cone with a weight of 10kg, and the threaded hole is formed in the middle of the balance nut, so that balance can be adjusted inwards and outwards conveniently.

If the sand core weight is too large, the whole lifting appliance needs to be thickened and reinforced, and the telescopic and contraction lengths of the telescopic rods on the two sides are adjusted through the telescopic mechanisms, so that the sand cores of the revolving bodies with different diameters can meet the requirements of sand cores with different sizes, and the applicability is wide. The balance mechanism is used for adjusting the balance of the sand core during lifting and setting, the lifting and setting of the sand core and the leveling of the balance mechanism enable the core to be perpendicular to the cavity and the core head, and the sand smearing between uneven core and the cavity can be reduced.

In this embodiment, a retractable hanger includes the following steps and descriptions:

as shown in fig. 2, the device of the invention is placed at the step of the revolving body sand core 400, the size range is adjusted by the telescopic rods 210 to be 50cm-150cm, the device is suitable for sand cores with different diameters, the lengths of the telescopic rods 210 on two sides are ensured to be equidistant, the telescopic rods 210 are fixed by the locking nuts 240, the cores are lifted, the balance nuts 320 are adjusted, and the revolving body sand core 400 is adjusted to be balanced; the core is lowered into the cavity.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that various changes, modifications, substitutions and alterations can be made in the above embodiments by those skilled in the art without departing from the scope of the present invention, and that various changes in the detailed description and applications can be made by those skilled in the art without departing from the spirit of the present invention.

Claims (7)

1. A telescopic lifting appliance for lifting and lowering a sand core is characterized in that,

comprises a hanger main body, a telescopic mechanism and a balance mechanism,

the telescopic mechanism comprises a telescopic rod and a supporting plate,

the two ends of the hanger main body are respectively connected with the telescopic rods, the telescopic rods can be stretched on the hanger main body,

one end of the telescopic rod is connected with the hanger main body, the other end is connected with the supporting plate,

the two sides of the center position of the hanger main body are respectively and symmetrically provided with the balance mechanism,

the balance mechanism is vertically connected with the lifting appliance main body and is used for carrying out balance adjustment on the lifting appliance main body.

2. The telescopic lifting appliance according to claim 1, wherein the main body of the lifting appliance comprises a sleeve, a lifting hook and pull rods, the lifting hook is vertically arranged at the central position of the sleeve, and the pull rods are respectively arranged at two sides of the sleeve and connected with the lifting hook.

3. The telescopic spreader according to claim 1, wherein a reinforcing rib is further provided between the support plate and the telescopic rod.

4. The telescopic spreader according to claim 1, wherein the balancing mechanism comprises a balancing screw and a balancing nut.

5. The retractable hanger of claim 4, wherein one end of the balance screw is fixedly connected to the hanger body, and the other end of the balance screw is movably connected to the balance nut.

6. The telescopic spreader according to claim 5, wherein the balancing nut is rotatable inwards or outwards in the direction of the balancing screw.

7. The telescopic spreader of claim 2, further comprising a locking member that secures the telescopic rod and the sleeve.

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