CN212559174U - Crane with overload prevention function - Google Patents

Crane with overload prevention function Download PDF

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Publication number
CN212559174U
CN212559174U CN202021129189.1U CN202021129189U CN212559174U CN 212559174 U CN212559174 U CN 212559174U CN 202021129189 U CN202021129189 U CN 202021129189U CN 212559174 U CN212559174 U CN 212559174U
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crane
supporting plate
arm
spring
jack
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CN202021129189.1U
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Chinese (zh)
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刘勇
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刘勇
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Abstract

The utility model relates to a crane overload prevention field, in particular to a crane with overload prevention function, which comprises a suspension arm, wherein the left side of the bottom end of the suspension arm is rotatably connected with a steel wire rope, the outer side of the bottom end of the steel wire rope is slidably connected with a crane, the central position of the inner side of the crane is provided with a support plate, the support plate runs through the crane, the support plate is slidably connected with the crane, the outer side of the support plate is provided with a pulley, and the pulley is slidably connected with the crane, the goods can not be continuously lifted, the damage of the jack is prevented, and the additional economic loss is avoided.

Description

Crane with overload prevention function
Technical Field
The utility model relates to a hoist anti-overload field specifically is a hoist with anti-overload function.
Background
The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, and is also called a crown block, a gantry crane, a crane and a tire crane, and is mainly characterized in that: the traveling cab and the crane control cab are integrated into a whole and are formed by evolving a crawler crane (crawler crane), a crawler and a traveling support part of a traveling mechanism are changed into a chassis with tires, the defect that a crawler plate of the crawler crane (crawler crane) damages a road surface is overcome, and the material handling machine belongs to material handling machinery.
Traditional hoist does not possess the overload protection function, because the weight of the unable accurate definite goods of operation workman's seat in the driver's cabin, the goods weight overloads, causes unable jack-up goods, makes the ground jack impaired, produces extra economic loss, and the unable automatic re-setting of overload protection device simultaneously needs the staff to reset to the jack-up couple, increases staff's intensity of labour.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hoist with anti-overload function to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a crane with an overload prevention function comprises a suspension arm, wherein the left side of the bottom end of the suspension arm is rotatably connected with a steel wire rope, the outer side of the bottom end of the steel wire rope is slidably connected with a crane, a supporting plate is arranged at the center of the inner side of the crane and penetrates through the crane, the supporting plate is slidably connected with the crane, a pulley is arranged on the outer side of the supporting plate and is slidably connected with the crane, the pulley penetrates through the supporting plate and is slidably connected with the supporting plate, a first spring group is fixedly connected to the outer side of the pulley, the other end of the first spring group is fixedly connected with the supporting plate, a connecting arm is arranged on the inner side of the supporting plate and penetrates through the supporting plate and is slidably connected with the supporting plate, a buffer plate is fixedly connected to the bottom end of the connecting arm, a lifting hook is arranged on the outer, the linking arm runs through the jack-up couple, and linking arm and jack-up couple sliding connection, the equal sliding connection in top left and right sides of jack-up couple has the slider, the top of slider is rotated through the pivot and is connected with the sleeve.
Preferably, the outside sliding connection of linking arm has the movable block, and the movable block rotates with the backup pad through the pivot to be connected, the outside fixedly connected with second spring assembly of movable block, and second spring assembly and backup pad fixed connection.
Preferably, the surface of the movable block close to the connecting arm is provided with a clamping block, and the top end of the connecting arm and the bottom end of the clamping block are both arranged in an arc shape.
Preferably, the outer side of the lifting hook is connected with a fourth spring group in a sliding manner, and the fourth spring group is fixedly connected with the lifting hook.
Preferably, telescopic inboard is equipped with the connecting rod, and the connecting rod rotates with the linking arm through the pivot to be connected, the connecting rod runs through the sleeve, and connecting rod and sleeve sliding connection, connecting rod outside sliding connection has the third spring assembly, and third spring assembly and sleeve fixed connection.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the utility model, through the arranged supporting plate, the arrangement is matched with the sliding connection between the supporting plate and the pulley, the rotating connection between the movable block and the supporting plate and the fixed connection between the second spring group and the movable block as well as the supporting plate, when goods pulled up by the crane are overloaded, the pulleys on the two sides of the supporting plate move downwards, the connecting arm presses downwards, the movable block rotates, the connecting arm falls to the bottom end of the supporting plate, the goods cannot be continuously lifted, the crane is prevented from being damaged, and the additional economic loss is avoided;
2. the utility model discloses in, through the connecting rod that sets up, this kind of sliding connection who sets up cooperation connecting rod and sleeve and third spring assembly, sleeve and slider are connected and linking arm and the sliding connection of hoisting hook with the rotation, and when the hoisting hook pulled up the goods and overload and unhook, control hoisting hook breaks away from the goods, and the deformation of third spring assembly provides elasticity, pulls up the hoisting hook, and on the fourth spring deformation linking arm card that resets goes into the fixture block of movable block simultaneously, reduces workman's intensity of labour.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the installation structure of the lifting hook of the present invention;
fig. 3 is a schematic structural diagram of a portion a of fig. 2 according to the present invention.
In the figure: 1-suspension arm, 2-steel wire rope, 3-jack, 4-support plate, 5-pulley, 6-first spring group, 7-connecting arm, 8-movable block, 9-second spring group, 10-buffer plate, 11-lifting hook, 12-fourth spring group, 13-sliding block, 14-sleeve, 15-connecting rod and 16-third spring group.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a crane with an overload prevention function comprises a suspension arm 1, wherein the left side of the bottom end of the suspension arm 1 is rotatably connected with a steel wire rope 2, the outer side of the bottom end of the steel wire rope 2 is slidably connected with a crane 3, a supporting plate 4 is arranged at the central position of the inner side of the crane 3, the supporting plate 4 penetrates through the crane 3, the supporting plate 4 is slidably connected with the crane 3, a pulley 5 is arranged at the outer side of the supporting plate 4, the pulley 5 is slidably connected with the crane 3, the pulley 5 penetrates through the supporting plate 4, the pulley 5 is slidably connected with the supporting plate 4, a first spring group 6 is fixedly connected with the outer side of the pulley 5, the other end of the first spring group 6 is fixedly connected with the supporting plate 4, the pulley 5 is favorably retracted into the supporting plate 4, the supporting plate 4 moves downwards, the tensile force borne by the crane 3 is reduced, a connecting arm 7 is arranged, bottom fixedly connected with buffer board 10 of linking arm 7, the outside of buffer board 10 is equipped with jack-up couple 11, and buffer board 10 and 11 sliding connection of jack-up couple, are favorable to pulling linking arm 7 to reset, and linking arm 7 runs through jack-up couple 11, and linking arm 7 and 11 sliding connection of jack-up couple, and the equal sliding connection in top left and right sides of jack-up couple 11 has slider 13, and the top of slider 13 is rotated through the pivot and is connected with sleeve 14.
The outer side of the connecting arm 7 is slidably connected with a movable block 8, the movable block 8 is rotatably connected with the supporting plate 4 through a rotating shaft, the outer side of the movable block 8 is fixedly connected with a second spring group 9, and the second spring group 9 is fixedly connected with the supporting plate 4, so that the movable block 8 can rotate conveniently, the connecting arm 7 is enabled to pass through the movable block 8 to the position below the supporting plate 4, and the lifting is stopped; a clamping block is arranged on the surface, close to the connecting arm 7, of the movable block 8, and the top end of the connecting arm 7 and the bottom end of the clamping block are both arranged in an arc shape, so that the movable block 8 can pass through the connecting arm 7 more easily when the connecting arm 7 is reset; a fourth spring group 12 is connected to the outer side of the lifting hook 11 in a sliding manner, and the fourth spring group 12 is fixedly connected with the lifting hook 11, so that the elastic force is provided conveniently and the connecting arm 7 is reset; the inboard of sleeve 14 is equipped with connecting rod 15, and connecting rod 15 rotates through pivot and linking arm 7 to be connected, and connecting rod 15 runs through sleeve 14, and connecting rod 15 and sleeve 14 sliding connection, and connecting rod 15 outside sliding connection has third spring assembly 16, and third spring assembly 16 and sleeve 14 fixed connection, is convenient for connect ground jack 3 and jack-up couple 11, and pulling jack-up couple 11 resets.
The working process is as follows: starting the crane, a driver controls the suspension arm 1 to be aligned with the direction of the goods to loosen the steel wire rope 2, so that the lifting hook 11 below the steel wire rope 2 hooks the goods, the suspension arm 1 is controlled to lift the crane 3 to pull the goods, when the goods are overloaded, the pulleys 5 on two sides of the support plate 4 slide downwards, the first spring group 6 deforms to enable the pulleys to be retracted to the inner side of the support plate 4, the lifting hook 11 stretches, the connecting arm 7 moves downwards, the T-shaped block at the top end of the connecting arm 7 downwards extrudes the clamping blocks on two sides of the movable block 8, the second spring group 9 deforms, the connecting arm 7 moves downwards through the clamping blocks, the third spring group 16 and the fourth spring group 12 deform while the lifting hook 11 moves downwards, so that the lifting hook 11 is separated from the crane 3, the sleeve 14 is pulled to a vertical position through the sliding block 13 to prevent overlarge pulling force on the lifting hook 11, and control the, the fourth spring group 12 pulls the buffer plate 10 upwards, the third spring group 16 pulls the connecting rod 15 to retract into the sleeve 14, and the sliding blocks 13 move to two sides of the lifting hook 11, so that the lifting hook 11 retracts into the jack 3, and automatic reset is completed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A crane with overload prevention function comprises a boom (1), and is characterized in that: the crane is characterized in that a steel wire rope (2) is rotatably connected to the left side of the bottom end of the suspension arm (1), a crane (3) is slidably connected to the outer side of the bottom end of the steel wire rope (2), a supporting plate (4) is arranged at the center of the inner side of the crane (3), the supporting plate (4) penetrates through the crane (3), the supporting plate (4) is slidably connected with the crane (3), a pulley (5) is arranged on the outer side of the supporting plate (4), the pulley (5) is slidably connected with the crane (3), the pulley (5) penetrates through the supporting plate (4), the pulley (5) is slidably connected with the supporting plate (4), a first spring set (6) is fixedly connected to the outer side of the pulley (5), the other end of the first spring set (6) is fixedly connected with the supporting plate (4), a connecting arm (7) is arranged on the inner side of the supporting plate (4), and linking arm (7) and backup pad (4) sliding connection, the bottom fixedly connected with buffer board (10) of linking arm (7), the outside of buffer board (10) is equipped with jack-up couple (11), and buffer board (10) and jack-up couple (11) sliding connection, jack-up couple (11) is run through in linking arm (7), and linking arm (7) and jack-up couple (11) sliding connection, the equal sliding connection in top left and right sides of jack-up couple (11) has slider (13), the top of slider (13) is rotated through the pivot and is connected with sleeve (14).
2. A crane having an overload prevention function according to claim 1, wherein: the outside sliding connection of linking arm (7) has movable block (8), and movable block (8) rotate with backup pad (4) through the pivot and be connected, the outside fixedly connected with second spring assembly (9) of movable block (8), and second spring assembly (9) and backup pad (4) fixed connection.
3. A crane having an overload prevention function according to claim 2, wherein: the surface of the movable block (8) close to the connecting arm (7) is provided with a clamping block, and the top end of the connecting arm (7) and the bottom end of the clamping block are both in arc-shaped arrangement.
4. A crane having an overload prevention function according to claim 1, wherein: the outer side of the hoisting hook (11) is connected with a fourth spring set (12) in a sliding mode, and the fourth spring set (12) is fixedly connected with the hoisting hook (11).
5. A crane having an overload prevention function according to claim 1, wherein: the inboard of sleeve (14) is equipped with connecting rod (15), and connecting rod (15) rotate with linking arm (7) through the pivot and be connected, sleeve (14) are run through in connecting rod (15), and connecting rod (15) and sleeve (14) sliding connection, connecting rod (15) outside sliding connection has third spring assembly (16), and third spring assembly (16) and sleeve (14) fixed connection.
CN202021129189.1U 2020-06-18 2020-06-18 Crane with overload prevention function Active CN212559174U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021129189.1U CN212559174U (en) 2020-06-18 2020-06-18 Crane with overload prevention function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021129189.1U CN212559174U (en) 2020-06-18 2020-06-18 Crane with overload prevention function

Publications (1)

Publication Number Publication Date
CN212559174U true CN212559174U (en) 2021-02-19

Family

ID=74636242

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021129189.1U Active CN212559174U (en) 2020-06-18 2020-06-18 Crane with overload prevention function

Country Status (1)

Country Link
CN (1) CN212559174U (en)

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