CN210176321U

CN210176321U - Buffer device for crane

Info

Publication number: CN210176321U
Application number: CN201921153138.XU
Authority: CN
Inventors: Haotai Cui; 崔毫太; Yu Gao; 高宇; Danmeng Zheng; 郑丹孟; Shaohua Cui; 崔少花
Original assignee: Henan Taichong Lifting Machinery Co Ltd
Current assignee: Henan Taichong Lifting Machinery Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-03-24
Anticipated expiration: 2029-07-22

Abstract

The utility model relates to the technical field of cranes and discloses a buffer device for a crane, which comprises a crane vehicle, a mounting seat and a buffer plate; the inside fixed mounting in left side of buffer board has the connecting block that is the rectangle structure, the inside fixed mounting of connecting block has horizontal buffering head, the left end fixedly connected with horizontal hydraulic buffer mechanism of buffering head, hydraulic buffer mechanism's left end is connected with first pneumatic rod, the left end fixedly mounted of first pneumatic rod has first pneumatic plate, the left side intercommunication of pneumatic cylinder has the atmospheric pressure chamber of seting up inside the mount pad, the upper and lower right lateral wall in atmospheric pressure chamber communicates right and has horizontal reverse pneumatic cylinder, the inside sliding connection of reverse pneumatic cylinder has the second pneumatic plate, the right side of second pneumatic plate is connected with the second pneumatic rod, the end of second pneumatic rod stretches out the outside of reverse pneumatic cylinder and installs the elastic pressing board. The utility model has the advantages that: pneumatic buffering and hydraulic buffering are combined, so that the buffering capacity is extremely strong, and the effect is good.

Description

Buffer device for crane

Technical Field

The utility model relates to a hoist technical field specifically is a buffer for hoist.

Background

The crane is applied to each field due to small volume and light weight, the crane trolley runs in the limited range of the cart beam, the buffer is an essential part for slowing down the impact of the crane trolley on the limited gear, the buffer belongs to an elastic device for load reduction and unloading, and the buffer avoids direct impact to cause track falling or part damage.

Chinese patent (publication No. CN 208234404U, publication No. 2018.12.14) discloses a safety buffer device for a crane, comprising: the crane trolley is arranged on the track, and a buffer head is arranged at the end part of the crane trolley; the buffer seat is arranged on the track and opposite to the buffer head, the buffer seat is arranged on the track through the fixing plate, the buffer seat comprises a buffer shell with an inner cavity, two guide rods and a buffer plate, an antirust coating is arranged on the outer surface of the buffer shell, a baffle is detachably arranged at one end, facing the buffer head, of the buffer shell, an air vent is arranged on the inner end face of the other end of the buffer shell, the baffle is provided with a through hole and allows the buffer head to enter or be pulled out of the buffer shell through the through hole, and the two guide rods are arranged in the buffer shell and symmetrically arranged on two sides of; and the inner buffer mechanism is accommodated in the buffer shell and is arranged between the buffer plate and the inner end surface of the buffer shell. The device only buffers through the buffer plate, although the structure is simple, when the device receives a large acting force, the buffer capacity of the device still cannot effectively protect the crane, and the buffer capacity is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a buffer for hoist 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 buffer device for a crane comprises a crane locomotive, a mounting seat and a buffer plate; the mounting seat is fixedly mounted on the right side of the crane vehicle, the buffer plate is arranged on the right side of the mounting seat, the connecting block which is of a rectangular structure is fixedly mounted inside the left side of the buffer plate, the transverse buffer head is fixedly mounted inside the connecting block, the transverse hydraulic buffer mechanism is fixedly connected to the left end of the buffer head, the left end of the hydraulic buffer mechanism is connected with the first air pressure rod, and the right end of the first air pressure rod extends into a through hole formed in the left end of the hydraulic buffer mechanism. The left end of first pneumatic rod stretches into and fixes the pneumatic cylinder on the mount pad right side wall in, the left end fixed mounting of first pneumatic rod has first pneumatic plate, and the left side intercommunication of pneumatic cylinder has the atmospheric pressure chamber of seting up in the mount pad inside, and the inside packing in atmospheric pressure chamber has a large amount of air. The upper side wall, the lower side wall and the right side wall of the pneumatic cavity are communicated with a transverse reverse pneumatic cylinder rightwards, a second pneumatic plate is connected to the inside of the reverse pneumatic cylinder in a sliding mode, a second pneumatic rod is connected to the right side of the second pneumatic plate, the tail end of the second pneumatic rod extends out of the outer side of the reverse pneumatic cylinder and is provided with an elastic pressing plate, and the elastic pressing plate is arranged on the left side of the connecting block. The hydraulic rod in the hydraulic buffer mechanism extrudes the first air pressure rod rightwards, so that the first air pressure rod drives the first air pressure plate to extrude the air pressure cylinder and air in the air pressure cavity, then the air in the air pressure cavity flows into the reverse air pressure cylinders on the upper side and the lower side in the extruding process, then the second air pressure plate pushes the second air pressure rod to move rightwards under the action of air pressure, then the second air pressure rod pushes the elastic pressure plate to move rightwards, and then the right force is applied to the buffer plate. When the buffer board receives pressure leftwards, the buffer board is firstly buffered through the hydraulic buffer mechanism, then the pneumatic cylinder, the reverse pneumatic cylinder, the elastic pressing plate and the like generate acting force rightwards, so that the buffer force received by the buffer board is balanced, and the damage of the buffer board caused by impact force is effectively relieved.

As a further aspect of the present invention: the buffer board is arranged into an arc-shaped structure so as to be convenient for slowing down the received impact force.

As a further aspect of the present invention: the hydraulic buffer mechanism comprises a hydraulic rod, a hydraulic cavity, a hydraulic plate and a mounting plate; the both ends fixed mounting in hydraulic pressure chamber has the mounting panel, and the inside packing in hydraulic pressure chamber has hydraulic oil, and the inside sliding connection in hydraulic pressure chamber has the hydraulic pressure board, and the middle part of hydraulic pressure board is passed and is had the hydraulic stem with the axle center with hydraulic buffer mechanism, and the left end of hydraulic stem stretches out the outside in hydraulic pressure chamber and connects the left end at the buffering head. When the buffer head receives pressure leftwards, the buffer head can extrude the hydraulic rod to drive the hydraulic plate to slide in the hydraulic cavity, so that the hydraulic plate extrudes hydraulic oil in the hydraulic cavity, and the buffer head is enabled to receive the damping and buffering effects. The impact force received by the buffer head can be relieved in a hydraulic mode by arranging the hydraulic buffer mechanism.

As a further aspect of the present invention: be located the junction of right-hand member mounting panel and hydraulic stem and be provided with the sealing washer, the setting of sealing washer is used for the inside in sealed hydraulic pressure chamber, prevents impurity business turn over.

As a further aspect of the present invention: the upper part of the left side of the reverse pneumatic cylinder on the upper side is provided with a lubricating oil inlet, lubricating liquid can be input into the reverse pneumatic cylinder through the lubricating oil inlet, and therefore friction force applied to the second pneumatic plate when the second pneumatic plate slides in the reverse pneumatic cylinder is reduced.

Compared with the prior art, the beneficial effects of the utility model are that: when receiving pressure leftwards, the buffer board buffers through hydraulic buffer mechanism earlier, then produces effort to the right through pneumatic cylinder, reverse pneumatic cylinder and elastic pressure plate etc. to the buffer power that balanced buffer board received, and then the effectual buffer board that slows down receives the damage of impact force, combines together through setting up pneumatic buffering and hydraulic cushion, has greatly improved the buffering effect of this device.

Drawings

Fig. 1 is a schematic structural view of a buffer device for a crane.

Fig. 2 is an external structural view of a hydraulic buffer mechanism in a buffer device for a crane.

Fig. 3 is a schematic view of an internal structure of a hydraulic buffer mechanism in a buffer device for a crane.

Wherein: the hydraulic buffer device comprises a crane vehicle 10, a mounting seat 11, a buffer plate 12, a connecting block 13, a buffer head 14, a hydraulic buffer mechanism 15, a first air pressure rod 16, a lubricating oil inlet 17, a pneumatic cylinder 18, a first air pressure plate 19, a pneumatic cavity 20, a reverse pneumatic cylinder 21, a second air pressure plate 22, a second air pressure rod 23, an elastic pressure plate 24, a hydraulic rod 25, a sealing ring 26, a hydraulic cavity 27, a hydraulic plate 28 and a mounting plate 29.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example one

Referring to fig. 1-3, a buffering device for a crane includes a crane vehicle 10, a mounting seat 11 and a buffering plate 12; the mount pad 11 fixed mounting is on the right side of crane locomotive 10, and buffer board 12 sets up the right side at mount pad 11, and buffer board 12 sets up to the arc structure and is convenient for slow down the impact force that receives. A connecting block 13 in a rectangular structure is fixedly installed inside the left side of the buffer plate 12, a transverse buffer head 14 is fixedly installed inside the connecting block 13, a transverse hydraulic buffer mechanism 15 is fixedly connected to the left end of the buffer head 14, and the hydraulic buffer mechanism 15 comprises a hydraulic rod 25, a hydraulic cavity 27, a hydraulic plate 28 and an installation plate 29; both ends fixed mounting of hydraulic pressure chamber 27 has mounting panel 29, the inside packing of hydraulic pressure chamber 27 has hydraulic oil, the inside sliding connection of hydraulic pressure chamber 27 has hydraulic plate 28, hydraulic stem 25 with the same axle center with hydraulic buffer gear 15 is passed at the middle part of hydraulic plate 28, the left end of hydraulic stem 25 stretches out the outside of hydraulic pressure chamber 27 and connects the left end at buffer head 14, when buffer head 14 receives pressure leftwards, thereby buffer head 14 can extrude hydraulic stem 25 and drive hydraulic plate 28 and slide in the inside of hydraulic pressure chamber 27, thereby make hydraulic plate 28 extrude the inside hydraulic oil in hydraulic pressure chamber 27, and then make buffer head 14 receive the effect of shock attenuation buffering. The impact force applied to the cushion head 14 can be hydraulically alleviated by providing the hydraulic cushion mechanism 15. And a sealing ring 26 is arranged at the joint of the right end mounting plate 29 and the hydraulic rod 25, and the sealing ring 26 is used for sealing the inside of the hydraulic cavity 27 to prevent impurities from entering and exiting. The left end of the hydraulic buffer mechanism 15 is connected with a first air pressure rod 16, and the right end of the first air pressure rod 16 extends into a through hole formed in the left end of the hydraulic buffer mechanism 15. The left end of the first air pressure rod 16 extends into a pneumatic cylinder 18 fixed on the right side wall of the mounting seat 11, a first air pressure plate 19 is fixedly mounted at the left end of the first air pressure rod 16, an air pressure cavity 20 formed in the mounting seat 11 is communicated with the left side of the pneumatic cylinder 18, and a large amount of air is filled in the air pressure cavity 20. The upper side wall and the lower side wall of the pneumatic cavity 20 are communicated with a transverse reverse pneumatic cylinder 21 rightwards, a second pneumatic plate 22 is connected inside the reverse pneumatic cylinder 21 in a sliding mode, a second pneumatic rod 23 is connected to the right side of the second pneumatic plate 22, the tail end of the second pneumatic rod 23 extends out of the reverse pneumatic cylinder 21 and is provided with an elastic pressing plate 24, and the elastic pressing plate 24 is arranged on the left side of the connecting block 13. The first air pressure rod 16 is pressed rightwards through the hydraulic rod 25 in the hydraulic buffer mechanism 15, so that the first air pressure rod 16 drives the first air pressure plate 19 to press the air in the air pressure cylinder 18 and the air in the air pressure cavity 20, then the air in the air pressure cavity 20 flows into the reverse air pressure cylinders 21 on the upper side and the lower side in the pressing process, then the second air pressure plate 22 pushes the second air pressure rod 23 to move rightwards under the action of air pressure, then the second air pressure rod 23 pushes the elastic pressure plate 24 to move rightwards, and further the right force is applied to the buffer plate 12. When the buffer plate 12 is under leftward pressure, the buffer plate is buffered by the hydraulic buffer mechanism 15, and then a rightward acting force is generated by the pneumatic cylinder 18, the reverse pneumatic cylinder 21, the elastic pressing plate 24 and the like, so that the buffer force applied to the buffer plate 12 is balanced, and the damage of the buffer plate 12 caused by the impact force is effectively reduced.

The utility model discloses a theory of operation is: when the buffer plate 12 is acted by a leftward force, the buffer plate is firstly slowed down by the hydraulic buffer mechanism 15, then the first air pressure plate 19 is extruded by the first air pressure rod 16, then air in the air pressure cavity 20 and the reverse air pressure cylinder 21 is extruded, so that the second air pressure plate 22 pushes the second air pressure rod 23 to move rightwards under the action of air pressure, then the second air pressure rod 23 pushes the elastic pressure plate 24 to move rightwards, and then rightward force is applied to the buffer plate 12, so that the buffer force borne by the buffer plate 12 is balanced, and the damage of the buffer plate 12 caused by impact force is effectively slowed down.

Example two

On the basis of the first embodiment, the upper portion of the left side of the reverse pneumatic cylinder 21 located at the upper side is opened with the lubricating oil inlet 17, and lubricating oil can be input into the reverse pneumatic cylinder 21 through the lubricating oil inlet 17, so that the friction force applied when the second pneumatic plate 22 slides in the reverse pneumatic cylinder 21 is reduced.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A buffer device for a crane comprises a crane locomotive (10), a mounting seat (11) and a buffer plate (12); the mounting seat (11) is fixedly mounted on the right side of the crane vehicle (10), the buffer plate (12) is arranged on the right side of the mounting seat (11), and the crane vehicle is characterized in that a connecting block (13) with a rectangular structure is fixedly mounted inside the left side of the buffer plate (12), a transverse buffer head (14) is fixedly mounted inside the connecting block (13), a transverse hydraulic buffer mechanism (15) is fixedly connected to the left end of the buffer head (14), a first air pressure rod (16) is connected to the left end of the hydraulic buffer mechanism (15), the right end of the first air pressure rod (16) extends into a through hole formed in the left end of the hydraulic buffer mechanism (15), the left end of the first air pressure rod (16) extends into a pneumatic cylinder (18) fixed on the right side wall of the mounting seat (11), a first air pressure plate (19) is fixedly mounted at the left end of the first air pressure rod (16), the left side of the pneumatic cylinder (18) is communicated with a pneumatic chamber (20) formed inside the mounting, the upper right side wall and the lower right side wall of the pneumatic chamber (20) are communicated with a transverse reverse pneumatic cylinder (21) rightwards, the inner portion of the reverse pneumatic cylinder (21) is connected with a second pneumatic plate (22) in a sliding mode, the right side of the second pneumatic plate (22) is connected with a second pneumatic rod (23), the tail end of the second pneumatic rod (23) extends out of the outer side of the reverse pneumatic cylinder (21) and is provided with an elastic pressing plate (24), and the elastic pressing plate (24) is arranged on the left side of the connecting block (13).

2. A crane damping device according to claim 1, characterised in that the damping plate (12) is arranged in an arc-shaped configuration.

3. A crane buffer according to claim 2, wherein the hydraulic buffer mechanism (15) comprises a hydraulic rod (25), a hydraulic chamber (27), a hydraulic plate (28) and a mounting plate (29); the both ends fixed mounting in hydraulic pressure chamber (27) has mounting panel (29), and the inside packing in hydraulic pressure chamber (27) has hydraulic oil, and the inside sliding connection in hydraulic pressure chamber (27) has hydraulic pressure board (28), and hydraulic stem (25) with the axle center with hydraulic buffer gear (15) have been passed in the middle part of hydraulic pressure board (28), and the left end of hydraulic stem (25) stretches out the outside in hydraulic pressure chamber (27) and connects the left end at buffer head (14).

4. A crane damping device according to claim 3, characterised in that a sealing ring (26) is provided at the junction of the right mounting plate (29) and the hydraulic rod (25).

5. A shock-absorbing device for a crane according to claim 1 or 2, wherein the upper left side of the reverse cylinder (21) located at the upper side is opened with a lubricating oil inlet (17).