CN210103268U - Hoisting device for engineering machinery - Google Patents

Abstract

The utility model discloses a hoisting device for engineering machinery, which comprises a first butt joint body, a second butt joint body, a switching device and a U-shaped piece, wherein the first butt joint body comprises a seat body and at least two claw bodies; the claw bodies are rotationally connected relative to the base body; the claw body is provided with a convex part, and the rotation of the claw body relative to the seat body can enable the convex part to completely enter or completely exit the cylindrical cavity; an elastic element is correspondingly arranged on the seat body corresponding to each claw body; the second butt joint body is provided with a butt joint part which can enter and exit the cylindrical cavity; the switching device comprises a hoop sleeve sleeved on the seat body and a switching mechanism capable of driving the hoop sleeve to move along the axial direction of the cylindrical cavity. The utility model discloses a hoist device for engineering machine tool keeps firm being connected after can making first butt joint body and second butt joint body butt joint through setting up auto-change over device, does not have the possibility that the pine takes off, can effectively guarantee the reliability of engineering machine tool hoist and mount process, avoids the emergence of accident.

Description

Hoisting device for engineering machinery

Technical Field

The utility model relates to an engineering machine tool field especially relates to a hoist device for engineering machine tool.

Background

Construction machines are an important component of the equipment industry. In general, mechanical equipment necessary for comprehensive mechanized construction works required for earth and stone construction works, road surface construction and maintenance, mobile lifting, loading and unloading operations, and various construction works is called as construction machinery. The method is mainly used in the fields of national defense construction engineering, transportation construction, energy industry construction and production, raw material industry construction and production of mines and the like, agriculture, forestry, water conservancy construction, industrial and civil buildings, urban construction, environmental protection and the like.

Hoisting is an indispensable task when the engineering machinery operates, and when various existing engineering machinery is hoisted, a common lifting hook is still used, so that the safety and the reliability of the common lifting hook are low.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the deficiencies in the prior art, the utility model provides a hoist device for engineering machine tool that security is high, the reliability is high.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a hoist device for engineering machine tool, include:

the first butt joint body comprises a seat body and at least two claw bodies; the seat body is internally provided with a cylindrical cavity, all the claw bodies are distributed around the cylindrical cavity in a circumferential array, and each claw body is rotatably connected relative to the seat body; the claw body is provided with a lug boss, and the lug boss can completely enter or completely exit the cylindrical cavity through the rotation of the claw body relative to the seat body; an elastic element is correspondingly arranged on the seat body corresponding to each claw body, and the elastic element enables the convex part of each claw body to have the tendency of entering the cylindrical cavity;

the second butt joint body is provided with a butt joint part which can enter and exit the cylindrical cavity, and when the butt joint part enters the cylindrical cavity, the lug boss of the claw body has a blocking effect on the butt joint part exiting the cylindrical cavity;

the switching device comprises a hoop sleeve sleeved on the seat body and a switching mechanism capable of driving the hoop sleeve to move along the axial direction of the cylindrical cavity; the switching mechanism can drive the hoop to be switched between two positions; in one position, the hoop is in an operating state and keeps the claw body in an operating state, the lug boss of the claw body completely enters the cylindrical cavity in the operating state, and in the other position, the hoop is in an idle state;

and the U-shaped part is fixedly arranged relative to the seat body, and two ends of the elastic element respectively abut against the claw body and the U-shaped part.

Further, the switching mechanism includes:

the switching connecting rod is rotatably arranged on the seat body and is in driving connection with the hoop sleeve;

a handle which is mounted on the switching link and which can be switched between a use state and a foldable state; in a use state, the switching connecting rod is fixedly connected with the switching connecting rod; in the foldable state, the handle can rotate relative to the switching connecting rod;

the first holding unit acts on the switching connecting rod to enable the switching connecting rod to be fixed relative to the seat body when the hoop is in an idle state;

and the second retaining unit acts on the handle to fix the handle relative to the seat body when the hoop is in the working state, and the handle is in a foldable state when the second retaining unit acts on the handle.

Further, the hoop sleeve comprises a driving pin, the switching connecting rod is provided with a first waist hole, and the driving pin is placed in the first waist hole and can move back and forth in the first waist hole.

Furthermore, the two sides of one end, close to the switching connecting rod, of the handle are provided with limiting steps, a second waist hole is formed in the switching connecting rod, a pin shaft is fixed on the handle and arranged in the second waist hole, and the pin shaft can move back and forth relative to the second waist hole to enable the end portion of the switching connecting rod to enter and exit between the two limiting steps.

Furthermore, the boss is provided with a guide inclined plane and a limiting inclined plane, and the inclination of the guide inclined plane is opposite to that of the limiting inclined plane; the butt joint part is provided with a guide conical surface matched with the guide inclined surface and a limit conical surface matched with the limit inclined surface.

Further, the first holding unit is an elastic first elastic sheet, and the end of the first elastic sheet is provided with a first protruding edge for limiting the switching link rod to pass through.

Furthermore, the second holding unit is a second elastic sheet with elasticity, and the end part of the second elastic sheet is provided with a second protruding edge used for limiting the handle to pass through.

Further, still include:

the connecting body comprises a connecting joint and a connecting flange, and the connecting joint is arranged between the base body and the connecting flange.

Furthermore, the base body is provided with a limiting part, and the hoop is abutted against the limiting part in an operation state.

Has the advantages that: the utility model discloses a hoist device for engineering machine tool keeps firm being connected after can making first butt joint body and second butt joint body butt joint through setting up auto-change over device, does not have the possibility that the pine takes off, can effectively guarantee the reliability of engineering machine tool hoist and mount process, avoids the emergence of accident.

Drawings

FIG. 1 is a structural diagram of a hoisting device for construction machinery;

FIG. 2 is a sectional view of the hoisting device for construction machinery;

FIG. 3 is an enlarged fragmentary view of the handle portion of FIG. 1;

FIG. 4 is a structural diagram of a hoisting device for construction machinery when a hoop is in an idle state;

FIG. 5 is an enlarged fragmentary view of the handle portion of FIG. 4;

the names of the parts indicated by the reference numerals in the drawings are as follows:

1 a first docking body; 11, a seat body; 111 a limiting part; 12 a claw body; 121 a boss; 121-1 guide slope; 121-2 of a limit inclined plane; 13 an elastic element; 2 a second docking body; 21 a butt joint part; 211 a guiding conical surface; 212 a limiting conical surface; 3 a switching device; 31, a hoop sleeve; 311 driving a pin; 32 a switching mechanism; 321 a switching link; 321-1 first waist hole; 321-2 second waist hole; 322 a handle; 322-1 limit step; 323 a first holding unit; 323-1 first raised ridges; 324 a second holding unit; 324-1 second raised edge; 325 pin shaft; 4 a linker; 41 connecting a joint; 42 a connecting flange; 5U-shaped piece.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The hoisting device for construction machinery shown in fig. 1 and 2 includes a first docking body 1, a second docking body 2, and a switching device 3.

The first butt joint body 1 comprises a seat body 11 and at least two claw bodies 12; the holder body 11 is internally provided with a cylindrical cavity, all the claw bodies 12 are distributed around the circumferential array of the cylindrical cavity, and each claw body 12 is rotatably connected with respect to the holder body 11; the claw body 12 is provided with a convex part 121, and the rotation of the claw body 12 relative to the holder body 11 can make the convex part 121 completely enter or completely exit the cylindrical cavity; an elastic element 13 is correspondingly arranged on the seat body 11 corresponding to each claw body 12, and the elastic element 13 enables the convex part 121 of each claw body 12 to have the tendency of entering the cylindrical cavity;

the second butt joint body 2 is provided with a butt joint part 21 which can enter and exit the cylindrical cavity, and when the butt joint part 21 enters the cylindrical cavity, the lug part 121 of the claw body 12 has a blocking effect on the exit of the butt joint part 21 from the cylindrical cavity;

the switching device 3 comprises a hoop sleeve 31 sleeved on the seat body 11 and a switching mechanism 32 capable of driving the hoop sleeve 31 to move along the axial direction of the cylindrical cavity; the switching mechanism 32 can drive the hoop 31 to switch between two positions; in one position, the collar 31 is in the working position and keeps the claw body 12 in the working position, in which the projection 121 of the claw body 12 is completely inside the cylindrical cavity, and in the other position, the collar 31 is in the rest position. As shown in fig. 4, when the ferrule 31 is in an idle state, the second butt body 2 can push the claw body 12 into and out of the cylindrical cavity under the action of external force. The seat body 11 is fixedly provided with a U-shaped member 5, and two ends of the elastic element 13 respectively abut against the claw body 12 and the U-shaped member 5.

The switching mechanism 32 includes a switching link 321, a handle 322, a first holding unit 323, and a second holding unit 324.

The switching link 321 is rotatably mounted on the seat body 11, and the switching link 321 is in driving connection with the hoop 31. The handle 322 is installed on the switching link 321, and can be switched between a use state and a foldable state; in a use state, it is fixedly connected to the switching link 321; in the foldable state, the handle 322 can rotate relative to the switching link 321; the first retaining unit 323 acts on the switching link 321 to fix it relative to the seat 11 when the ferrule 31 is in the idle state, so as to prevent the ferrule 31 from being accidentally switched to the operating state to cause the second butt-joint body 2 and the first butt-joint body 1 to be not pre-butted when the second butt-joint body 2 and the first butt-joint body 1 are pre-butted (i.e. the first butt-joint body 1 is completely entered into the cylindrical cavity through the protrusion 121 on the claw body 12) during the operation; when the hoop 31 is in the operating state, the second holding unit 324 acts on the handle 322 to fix the handle 322 relative to the base 11, and when the handle 322 acts on the handle 322, the handle 322 is in the foldable state, the second holding unit 324 can lock the hoop 31 to prevent the hoop 31 from moving relative to the base 11, so that the situation that external objects scratch the hoop 31 or the handle 322 causes the hoop 31 to be accidentally switched to the idle state in the process of transportation, and the hoisted object falls off to cause danger or loss is prevented.

Specifically, the hoop 31 comprises a driving pin 311, the switching link 321 has a first waist hole 321-1, and the driving pin 311 is disposed in the first waist hole 321-1 and can move back and forth in the first waist hole 321-1. Thus, the switching link 321 rotates to drive the hoop 31 to move.

Both sides of one end of the handle 322 close to the switching connecting rod 321 are provided with limiting steps 322-1, the switching connecting rod 321 is provided with a second waist hole 321-2, a pin shaft 325 is fixed on the handle 322, the pin shaft 325 is arranged in the second waist hole 321-2 and can move back and forth relative to the second waist hole 321-2 to enable the end part of the switching connecting rod 321 to pass in and out between the two limiting steps 322-1. Thus, when the handle 322 needs to be used, the handle 322 is unfolded to be in a straight line with the end of the switching link 321, and then the handle 322 is pushed forward along the length direction thereof, so that the pin 325 moves along the second waist hole 321-2, and the end of the switching link 321 enters between the two limiting steps 322-1, as shown in fig. 5, so that when the handle 322 is rotated, the switching link 321 can rotate; when the handle 322 needs to be folded and fixed, the end of the switching link 321 is pulled along the length of the handle 322 to be separated from the two limiting steps 322-1, the handle 322 is in a foldable state, and the switching link 321 cannot rotate along with the rotation of the handle 322.

In addition, the seat body 11 has a position-limiting portion 111, and the ferrule 31 abuts against the position-limiting portion 111 in the operating state, so that when the ferrule 31 is in the operating state, the freedom of movement to one side is restricted by the stopper 111, and since the handle 322 is locked, the freedom of movement to the other side of the cuff 31 is restricted by the switching link 321, can ensure that the hoop sleeve 31 is in a locking state under the operation state, ensures the safety, in addition, the arrangement of the limiting part 111 is also beneficial to the storage of the handle 322, when the handle 322 is rotated to make the hoop 31 abut against the position-limiting part 111, the position of the switching link 321 is fixed, it is natural to pull the handle 322 and to continue to rotate the handle 322 in a direction to be restricted in position by the second holding unit 324, the handle 322 can be quickly put in place, otherwise, if the switching link 321 is still movable, the handle 322 can be rotated with two degrees of freedom to find a fixed position with difficulty.

Further, the protrusion 121 has a guide inclined surface 121-1 and a limit inclined surface 121-2, and the inclination of the guide inclined surface 121-1 is opposite to that of the limit inclined surface 121-2; the abutting portion 21 has a guide tapered surface 211 for engaging with the guide tapered surface 121-1 and a limit tapered surface 212 for engaging with the limit tapered surface 121-2. Thus, in the process that the butt joint part 21 enters the cylindrical cavity, the guide conical surface 211 on the butt joint part 21 is firstly contacted with the guide inclined surface 121-1, and the claw body 12 can be outwards opened through the squeezing action of the guide conical surface and the guide inclined surface, so that the claw body 12 can be gradually opened, and the butt joint part 21 can enter the cylindrical cavity; when the abutment 21 has fully entered the cylindrical cavity, the pawl body 12 is reset by the resilient element 13. When the switching device 3 acts on the claw body 12 to make the claw body 12 unable to open relative to the seat body 11, the limit inclined plane 121-2 contacts with the limit conical surface 212 to limit the butt joint part 21 so that it cannot be taken out of the cylindrical cavity; when the switching device 3 does not limit the movement of the claw body 12 any more and the butt joint part 21 is to be removed from the cylindrical cavity, a force is applied to the first butt joint body 1 or the second butt joint body 2, and at this time, the limiting conical surface 212 presses the limiting inclined surface 121-2, so that the claw body 12 is expanded outwards, and the butt joint part 21 can be removed from the cylindrical cavity. In addition, even if the handle 322 is not locked, the claw body 12 tends to be expanded under the extrusion of the limiting conical surface 212 during the operation of the hoisting device, so that the hoop 31 cannot move relative to the base body 11 due to the extrusion of the hoop 31, and self-locking is formed, so that the use safety is further ensured, and the handle 322 is folded and locked to form double insurance.

Further, as shown in fig. 3, the first holding unit 323 is a first elastic sheet having elasticity, and an end portion thereof has a first protruding edge 323-1 for limiting the passage of the switching link 321. In this embodiment, two first holding units 323 are fixed on the seat body 11, and the switching link 321 makes the first holding unit 323 move away from the seat body 11 due to its own elasticity by rubbing the first protruding rib 323-1 so that the switching link 321 can pass through the first protruding rib 323-1.

Further, as shown in fig. 5, the second holding unit 324 is a second elastic sheet having elasticity, and an end portion thereof has a second protruding rib 324-1 for limiting the passage of the handle 322. In this embodiment, two second retaining units 324 are fixed on the seat body 11, and the handle 322 makes the two second retaining units 324 relatively far away from each other due to the elasticity of the handle 322 itself by rubbing the second protruding rib 324-1, so that the handle 322 can enter and exit the retaining space between the two second retaining units 324.

Further, the connecting body 4 is further included, and includes a connecting joint 41 and a connecting flange 42, wherein the connecting joint 41 is disposed between the seat body 11 and the connecting flange 42. The attachment flange 42 may be mounted on the work machine.

A method for using a hoisting device for construction machinery, wherein in an initial state, a hoop 31 is in an idle state, and a first retaining unit 323 acts on a switching connecting rod 321 to fix the switching connecting rod relative to a seat body 11, the method comprising:

step one, the butt joint part 21 of the second butt joint body 2 enters the seat body 11, and in the process that the butt joint part 21 of the second butt joint body 2 enters the seat body 11, the guide conical surface 211 of the butt joint part 21 presses the guide inclined surface 121-1 of the convex part 121 of the claw body 12, so that the claw body 12 is expanded outwards relative to the seat body 11 until the butt joint part 21 passes through the convex part 121 of the claw body 12, and the claw body 12 is reset under the action of the elastic element 13;

step two, the handle 322 is rotated to switch the hoop 31 to the operating state, then the handle 322 is switched to the foldable state, the handle 322 is folded relative to the switching link 321 to enter the second holding unit 324, and the second holding unit 324 keeps the handle 322 in a fixed state relative to the seat body 11.

The utility model discloses a hoist device for engineering machine tool keeps firm being connected after can making first butt joint body and second butt joint body butt joint through setting up auto-change over device, does not have the possibility that the pine takes off, can effectively guarantee the reliability of engineering machine tool hoist and mount process, avoids the emergence of accident.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (9)

1. The utility model provides a hoist device for engineering machine tool which characterized in that includes:

the first butt joint body comprises a seat body and at least two claw bodies; the seat body is internally provided with a cylindrical cavity, all the claw bodies are distributed around the cylindrical cavity in a circumferential array, and each claw body is rotatably connected relative to the seat body; the claw body is provided with a lug boss, and the lug boss can completely enter or completely exit the cylindrical cavity through the rotation of the claw body relative to the seat body; an elastic element is correspondingly arranged on the seat body corresponding to each claw body, and the elastic element enables the convex part of each claw body to have the tendency of entering the cylindrical cavity;

the second butt joint body is provided with a butt joint part which can enter and exit the cylindrical cavity, and when the butt joint part enters the cylindrical cavity, the lug boss of the claw body has a blocking effect on the butt joint part exiting the cylindrical cavity;

the switching device comprises a hoop sleeve sleeved on the seat body and a switching mechanism capable of driving the hoop sleeve to move along the axial direction of the cylindrical cavity; the switching mechanism can drive the hoop to be switched between two positions; in one position, the hoop is in an operating state and keeps the claw body in an operating state, the lug boss of the claw body completely enters the cylindrical cavity in the operating state, and in the other position, the hoop is in an idle state;

and the U-shaped part is fixedly arranged relative to the seat body, and two ends of the elastic element respectively abut against the claw body and the U-shaped part.

2. The hoist device for construction machinery according to claim 1, wherein the switching mechanism includes:

the switching connecting rod is rotatably arranged on the seat body and is in driving connection with the hoop sleeve;

a handle which is mounted on the switching link and which can be switched between a use state and a foldable state; in a use state, the switching connecting rod is fixedly connected with the switching connecting rod; in the foldable state, the handle can rotate relative to the switching connecting rod;

the first holding unit acts on the switching connecting rod to enable the switching connecting rod to be fixed relative to the seat body when the hoop is in an idle state;

and the second retaining unit acts on the handle to fix the handle relative to the seat body when the hoop is in the working state, and the handle is in a foldable state when the second retaining unit acts on the handle.

3. The hoist apparatus for construction machinery according to claim 2, wherein the bail includes a drive pin, and the switching link has a first waist hole, and the drive pin is disposed in the first waist hole and is movable back and forth in the first waist hole.

4. The hoisting device for construction machinery as claimed in claim 2, wherein both sides of one end of the handle close to the switching link are provided with limiting steps, the switching link is provided with a second waist hole, the handle is fixed with a pin shaft, the pin shaft is arranged in the second waist hole, and the pin shaft can move back and forth relative to the second waist hole to enable the end part of the switching link to move in and out between the two limiting steps.

5. The hoisting device for the construction machinery as claimed in claim 1, wherein the boss has a guide slope and a limit slope, the guide slope and the limit slope having opposite slopes; the butt joint part is provided with a guide conical surface matched with the guide inclined surface and a limit conical surface matched with the limit inclined surface.

6. The hoisting device for construction machinery according to claim 2, wherein the first holding unit is a first elastic piece having elasticity, and an end portion thereof has a first protruding edge for restricting passage of the switching link.

7. The lifting device for construction machinery as claimed in claim 2, wherein the second holding unit is a second resilient plate having elasticity and a second protruding edge at an end thereof for restricting passage of the handle.

8. The hoisting device for construction machinery as claimed in claim 1, further comprising:

the connecting body comprises a connecting joint and a connecting flange, and the connecting joint is arranged between the base body and the connecting flange.

9. The hoisting device for engineering machinery as claimed in claim 1, wherein the base body is provided with a limiting portion against which the ferrule abuts in an operating state.

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