CN221274999U - Lifting appliance for heat treatment of large gear to enter and exit furnace - Google Patents

Abstract

The utility model discloses a lifting appliance for a large gear heat treatment furnace, which comprises a left clamp, a right clamp, connecting rods, a telescopic rod and a pin shaft, wherein one ends of the two connecting rods are rotationally connected, the left clamp and the right clamp are arranged in a crossed manner and are rotationally connected, one end of the left clamp and one end of the right clamp are respectively rotationally connected with the other ends of the two connecting rods, the other ends of the left clamp and the other ends of the right clamp jointly form a clamping cavity for a gear, one end of the telescopic rod is rotationally arranged on the left clamp or the right clamp, the pin shaft is arranged on a central hole of the other end of the telescopic rod through a threaded structure, and the pin shaft is matched with a shaft hole of the gear. The lifting appliance is simple in structure, not easy to damage, suitable for transferring heavier and larger gears, stable in clamping, and safe and stable, and is provided with the pin shafts corresponding to the gear shaft holes, so that the gears are prevented from deflecting in the clamp, and the clamp works conveniently and rapidly for clamping the round large gears.

Description

Lifting appliance for heat treatment of large gear to enter and exit furnace

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to a lifting appliance for heat treatment of a large gear in and out of a furnace.

Background

The gear is one of common transmission parts, can transmit power, can change the rotating speed and the rotating direction, and is widely applied to transmission mechanisms in various fields. The processing technology process of the gear comprises the following steps: gear workpiece blank machining, tooth surface machining, heat treatment process and tooth surface finish machining. The heat treatment process mainly improves the mechanical properties of gear workpieces, and has the effects of hardening and tempering, carburizing and quenching, high-frequency induction heating and quenching of tooth surfaces and the like according to the use requirements and different materials; in order to eliminate stress generated in large diameter (phi 650mm and above) large gears during processing, the large gears are generally hoisted into a heat treatment furnace for processing.

However, because the large gear is heavy, the large gear is difficult to move by manpower, and the gear enters and exits the heat treatment furnace usually by means of a traveling crane and a lifting appliance matched with the gear. The prior Chinese patent with publication number of CN202122915849.X is named as a lifting appliance for transferring gears, which clamps gears through two L-shaped clamping arms so as to realize the purpose of transferring gears. However, when the circular gear is clamped, the lifting tool needs to apply a great clamping force to prevent the gear from deflecting in the clamp, the structure is complex, the motor and the transmission mechanism are needed to realize the opening and closing action of the L-shaped clamping arm, and the lifting tool is suitable for lighter and smaller gears and is not suitable for moving heavier and bigger gears.

Disclosure of utility model

The utility model aims to provide a lifting appliance for heat treatment of a large gear in and out of a furnace, which solves the problems that the existing clamp is not suitable for moving a gear with a larger weight and is easy to deflect in the clamp.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a large-scale gear heat treatment business turn over hoist for stove, the hoist is used for embracing the periphery of pressing from both sides the gear, the hoist includes left pincers, right pincers, connecting rod, telescopic link and round pin axle, two the one end of connecting rod rotates to be connected, left pincers with right pincers alternately set up and rotate to be connected, the one end of left pincers with the one end of right pincers respectively with two the other end of connecting rod rotates to be connected, the other end of left pincers with the other end of right pincers forms jointly and is used for the embracing of gear presss from both sides the chamber, the one end rotation of telescopic link is installed left pincers or on the right pincers, the round pin axle passes through the helicitic texture and installs on the centre bore of telescopic link other end, just the round pin axle with the shaft hole looks adaptation of gear.

The further technical scheme is as follows: the left clamp and the right clamp are both arc-shaped in the part for forming the holding and clamping cavity.

The further technical scheme is as follows: the left clamp and the right clamp are used for forming the end part of the holding and clamping cavity, a plurality of rollers are rotatably arranged on the end part of the holding and clamping cavity, and the rollers abut against the periphery of the gear.

The further technical scheme is as follows: the rotating joint of the connecting rod is provided with a lifting ring.

The further technical scheme is as follows: the left clamp is rotatably provided with a locking rod, the locking rod is provided with a plurality of clamping grooves, and the clamping grooves are matched with the rotating shafts on the end parts of the right clamp.

The further technical scheme is as follows: the telescopic rod consists of an outer rod and an inner rod which is slidably arranged in the outer rod.

Compared with the prior art, the utility model has at least one of the following beneficial effects:

The lifting appliance for the furnace inlet and outlet of the heat treatment of the large gear is simple in structure, not easy to damage, suitable for transferring heavier and larger gears, capable of completely realizing the purpose of clamping the gears by means of the weight of the gears when the large gear is lifted, capable of realizing the effect of holding the gears more and more tightly by heavier gears, stable in holding by a holding cavity formed between a left clamp and a right clamp, and provided with a pin shaft corresponding to a gear shaft hole, capable of preventing the gears from deflecting in a clamp, and convenient, fast, safe and stable in holding of the circular large gear by the clamp.

In addition, due to the arrangement of the pin shaft, when the large gear is horizontally arranged, the clamp can also be used for overturning the gear.

Drawings

Fig. 1 is a schematic structural view of a lifting appliance for heat treatment of large gears in and out of a furnace.

Fig. 2 is a schematic structural view of the spreader of fig. 1 according to the present utility model.

Fig. 3 is a schematic structural view of the pin in fig. 1 according to the present utility model.

Fig. 4 is a schematic view of the structure of the locking lever of fig. 1 according to the present utility model.

Reference numerals: 2. a lifting appliance; 3. a left clamp; 4. a right clamp; 5. a connecting rod; 6. a telescopic rod; 7. a pin shaft; 8. a central bore; 9. a roller; 10. a pull ring is lifted; 11. a locking lever; 12. a clamping groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

This embodiment shows in fig. 1, fig. 2, fig. 3 and fig. 4, a large gear heat treatment business turn over furnace hoist, hoist 2 is used for embracing the periphery of pressing from both sides the gear, hoist 2 includes left pincers 3, right pincers 4, connecting rod 5, telescopic link 6 and round pin axle 7, the one end of two connecting rods 5 rotates to be connected, left pincers 3 and right pincers 4 alternately set up and rotate to be connected, the one end of left pincers 3 and the one end of right pincers 4 rotate with the other end of two connecting rods 5 respectively to be connected, the other end of left pincers 3 and the other end of right pincers 4 jointly form the embracing that is used for the gear and press from both sides the chamber, the one end rotation of telescopic link 6 is installed on left pincers 3 or right pincers 4, round pin axle 7 passes through the helicitic texture and installs on the centre bore 8 of the other end of telescopic link 6, and round pin axle 7 and the shaft hole looks adaptation of gear.

This hoist simple structure, it is not fragile, can be applicable to and shift heavier great gear, when lifting by crane the gear wheel, rely on the purpose of the weight realization clamp gear of gear self completely, the gear is heavier the centre gripping tighter, the embracing clamp chamber that forms between left pincers and the right pincers plays the effect of pocket embracing the gear, the centre gripping is stable to have the round pin axle corresponding with the gear shaft hole, be used for preventing that the gear from taking place to deflect in the anchor clamps, this anchor clamps are to circular gear wheel's centre gripping work convenient and fast, safety and stability.

In addition, due to the arrangement of the pin shaft, when the large gear is horizontally arranged, the clamp can also be used for overturning the gear.

Preferably, the portions of the left clamp 3 and the right clamp 4 for forming the holding and clamping cavity are each provided in an arc shape.

The device is used for holding the gear by a pocket and better clamping the gear.

Preferably, the ends of the left clamp 3 and the right clamp 4 used for forming the holding and clamping cavity are rotatably provided with a plurality of rollers 9, and the rollers 9 abut against the periphery of the gear.

The roller 9 can rotate the gear in the clamp when the clamp clamps the gear, so that other operations are convenient to perform.

Preferably, the pivotal connection of the connecting rod 5 is provided with a lifting tab 10.

Preferably, the left clamp 3 is rotatably provided with a locking rod 11, the locking rod 11 is provided with a plurality of clamping grooves 12, and the clamping grooves 12 are matched with the rotating shafts on the end parts of the right clamp 4.

The clamp during clamping can be locked by using the locking rod 11, so that the clamp 2 is prevented from being opened by mistake due to misoperation or equipment failure, and the gear is prevented from falling and being damaged.

Preferably, the telescopic rod 6 consists of an outer rod and an inner rod slidably mounted within the outer rod.

The working process of the utility model is as follows: before clamping a horizontally placed gear, firstly selecting a proper pin shaft 7 according to the size of a shaft hole of the gear, then screwing the pin shaft 7 with the proper size on a central hole 8 at the other end of the telescopic rod 6, then opening the left clamp 3 and the right clamp 4 to form a clamping cavity for the gear, simultaneously placing the pin shaft 7 in the shaft hole of the gear, pulling the interconnection part of the two connecting rods 5 (generally using a row crane), namely realizing preliminary clamping of the gear, then pulling the interconnection part of the two connecting rods 5 continuously, turning over the gear, and at the moment, if the gear is required to be continuously moved, continuously operating the row crane to move the gear.

For the vertically placed gears, the process of preliminarily clamping the gears can be omitted, and the clamp 2 can be directly lifted.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. A lifting appliance for heat treatment of large gears to enter and exit a furnace is characterized in that: the lifting appliance is characterized in that the lifting appliance (2) is used for holding the periphery of a gear, the lifting appliance (2) comprises a left clamp (3), a right clamp (4), a connecting rod (5), a telescopic rod (6) and a pin shaft (7), one ends of the connecting rod (5) are rotationally connected, the left clamp (3) and the right clamp (4) are alternately arranged and rotationally connected, one end of the left clamp (3) and one end of the right clamp (4) are respectively rotationally connected with two other ends of the connecting rod (5), the other ends of the left clamp (3) and the other ends of the right clamp (4) jointly form a holding cavity for the gear, one end of the telescopic rod (6) is rotationally installed on the left clamp (3) or the right clamp (4), and the pin shaft (7) is installed on a central hole (8) at the other end of the telescopic rod (6) through a threaded structure and is matched with a shaft hole of the gear.

2. The hanger for heat treatment of large gears for furnace entry and exit according to claim 1, wherein: the left clamp (3) and the right clamp (4) are used for forming the holding and clamping cavity, and the parts are arc-shaped.

3. The hanger for heat treatment of large gears for furnace entry and exit according to claim 1, wherein: the left clamp (3) and the right clamp (4) are used for forming the end parts of the holding and clamping cavity, a plurality of rollers (9) are rotatably arranged on the end parts of the holding and clamping cavity, and the rollers (9) are abutted against the periphery of the gear.

4. The hanger for heat treatment of large gears for furnace entry and exit according to claim 1, wherein: the rotary connection part of the connecting rod (5) is provided with a lifting ring (10).

5. The hanger for heat treatment of large gears for furnace entry and exit according to claim 1, wherein: the left clamp (3) is rotatably provided with a locking rod (11), the locking rod (11) is provided with a plurality of clamping grooves (12), and the clamping grooves (12) are matched with rotating shafts on the end parts of the right clamp (4).

6. The hanger for heat treatment of large gears for furnace entry and exit according to claim 1, wherein: the telescopic rod (6) consists of an outer rod and an inner rod which is slidably arranged in the outer rod.