CN216471861U

CN216471861U - Limiting device for bridge crane

Info

Publication number: CN216471861U
Application number: CN202123412707.8U
Authority: CN
Inventors: 张红杰; 牛红江; 王松江; 李团国; 王振新; 冯献兵; 庞玉芳
Original assignee: Henan Zhongyuan Hoist Machinery Co ltd
Current assignee: Henan Zhongyuan Hoist Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-10
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a limiting device for a bridge crane, which comprises a U-shaped plate and a first buffer plate, second buffer board and crashproof board, the locating lever of the vertical setting of fixedly connected with between two installation pieces, all be provided with the hinge bar between slider on the locating lever and the locating piece, the part that the locating lever is located between slider and the installation piece all is provided with first spring, the second delays the first connecting rod that fixedly connected with level set up on the first buffer board, the one end that first buffer board was kept away from to first connecting rod passes the second buffer board and with second buffer board sliding connection, the part that first connecting rod is located between first buffer board and the second buffer board is provided with the second spring, be provided with a plurality of groups damper between crashproof board and the second buffer board, damper all includes second connecting rod and hollow sleeve, install the distance sensor that two symmetries set up on the U-shaped board. The utility model provides an electric block can strike the end beam at the in-process that moves on the girder, produce the problem of incident.

Description

Limiting device for bridge crane

Technical Field

The utility model belongs to the technical field of the hoist, especially, relate to a stop device for bridge crane.

Background

The crane is 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 navigation crane and a crane. Bridge cranes are becoming more and more popular with workers due to their wide range of applications. In order to ensure the safety and reliability of the hoisting operation, the bridge crane is provided with a perfect safety device so as to protect machine parts or remind operators of paying attention under the unexpected condition, thereby achieving the safety protection effect, but the existing bridge crane does not have the limiting and anti-collision functions on an electric hoist, when the electric hoist fails, the electric hoist can impact an end beam in the process of horizontally moving on a main beam, so that safety accidents are generated, and the normal use of the crane is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stop device for bridge crane solves current bridge crane and does not have spacing, crashproof function to electric block, and electric block horizontal migration's in-process can strike the end beam on the girder, produces the incident, influences the problem of normal use.

In order to solve the problem, the utility model discloses the technical scheme who takes:

a limiting device for a bridge crane comprises a U-shaped plate with a U-shaped structure, and a vertically arranged first buffer plate positioned in the U-shaped plate, wherein two installation blocks are fixedly connected to the U-shaped plate, a vertically arranged positioning rod is fixedly connected between the two installation blocks, two symmetrically arranged sliding blocks are slidably connected to the positioning rod, a positioning block is fixedly connected to one side of the first buffer plate close to the installation blocks, a hinge rod is arranged between the two sliding blocks and the positioning block, two ends of the hinge rod are respectively hinged with the positioning block and the sliding block, a first spring is arranged at the part of the positioning rod between the sliding block and the installation block, a second buffer plate is vertically arranged at one side of the first buffer plate far from the positioning block, the second buffer plate is positioned in the U-shaped plate, a horizontally arranged first connecting rod is fixedly connected to the first buffer plate, one end of the first connecting rod far from the first buffer plate penetrates through the second buffer plate and is slidably connected with the second buffer plate, the one end fixedly connected with first connecting block that first connecting rod passed the second buffer board, the part that first connecting rod is located between first buffer board and the second buffer board is provided with the second spring, U-shaped board one side still vertically is provided with crashproof board, be provided with a plurality of groups damper between crashproof board and the second buffer board, damper all includes second connecting rod and hollow sleeve, sleeve fixed connection is on the second buffer board, the one end fixed connection of second connecting rod is on crashproof board, the other end and the sleeve sliding connection of second connecting rod, the part that the second connecting rod is located between crashproof board and the sleeve all is provided with the third spring, the equal fixedly connected with second connecting block of one end that the second connecting rod is located the sleeve, install the distance sensor that two symmetries set up on the U-shaped board.

Further, the equal fixedly connected with guide block in second buffer board top and bottom has seted up the spout along the horizontal direction on the U-shaped board, spout and guide block looks adaptation, spout and guide block sliding connection.

Furthermore, the top of U-shaped board is fixedly connected with two support columns, and the top of support column all is provided with the ring flange.

Furthermore, a cushion pad is fixedly connected to one side of the anti-collision plate, which is far away from the second connecting rod.

Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses a set up distance sensor and respond to its and anticollision distance between the board to cut off electric block's power, avoid electric block to continue the operation, at electric block because inertia continues the in-process that removes, tertiary buffer gear plays shock attenuation, cushioning effect to electric block, finally makes electric block stop, avoids electric block and end beam to bump, protection electric block and end beam, safe and reliable. The top of support column is provided with the ring flange, and this stop device can dismantle fixed connection in the bottom at girder both ends through the ring flange, simple to operate, easily dismantles.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model provides a stop device for bridge crane, including the U-shaped plate 1 that is the U-shaped structure, be located U-shaped plate 1 and the first buffer board 2 of vertical setting, two installation pieces 3 of fixedly connected with on the U-shaped plate 1, the locating lever 4 of the vertical setting of fixedly connected with between two installation pieces 3, sliding connection has the slider 5 that two symmetries set up on locating lever 4, one side fixedly connected with locating piece 6 that first buffer board 2 is close to installation piece 3, all be provided with hinge bar 7 between two sliders 5 and the locating piece 6, hinge bar 7's both ends are articulated with locating piece 6 and slider 5 respectively, the part that locating lever 4 is located between slider 5 and the installation piece 3 all is provided with first spring 8. The vertical second buffer board 9 that is provided with in one side that locating piece 6 was kept away from to first buffer board 2, second buffer board 9 is located U-shaped board 1, first connecting rod 10 that two levels of fixedly connected with set up on first buffer board 2, first connecting rod 10 keep away from first buffer board 2 one end pass second buffer board 9 and with second buffer board 9 sliding connection, first connecting rod 10 passes the first connecting block 11 of one end fixedly connected with of second buffer board 9, first connecting block 11 plays limiting displacement. A portion of the first link 10 between the first damping plate 2 and the second damping plate 9 is provided with a second spring 12. An anti-collision plate 13 is vertically arranged on one side of the U-shaped plate 1, a plurality of groups of damping mechanisms are arranged between the anti-collision plate 13 and the second buffer plate 9, each damping mechanism comprises a second connecting rod 14 and a hollow sleeve 15, the sleeves 15 are horizontally arranged and fixedly connected to the second buffer plate 9, one end of each second connecting rod 14 is fixedly connected to the anti-collision plate 13, the other end of each second connecting rod 14 is slidably connected with the corresponding sleeve 15, a third spring 16 is arranged on the part, located between the anti-collision plate 13 and the corresponding sleeve 15, of each second connecting rod 14, a second connecting block 17 is fixedly connected to one end, located in each sleeve 15, of each second connecting rod 14, each second connecting block 17 plays a limiting role, and the second connecting rods 14 are prevented from sliding out of the sleeves 15. Two distance sensors 18 which are symmetrically arranged are mounted on the U-shaped plate 1, the distance sensors 18 can sense the distance between the distance sensors and the anti-collision plate 13, the distance sensors 18 are electrically connected with the PLC, and when the distance between the distance sensors 18 and the anti-collision plate 13 reaches or is smaller than a preset distance, the PLC cuts off the power supply of the electric hoist to stop the electric hoist. The distance sensor 18 and the PLC controller are both in the prior art, and are not described in detail.

Further, the equal fixedly connected with guide block 19 in second buffer board 9 top and bottom has seted up spout 20 along the horizontal direction on the U-shaped board 1,

spout

20 and 19 looks adaptations of guide block, and spout 20 and 19 sliding connection of guide block set up spout 20 and can play the guide effect to the removal of second buffer board 9 on the horizontal direction, ensure stability.

Further, two support columns 21 of top fixedly connected with of U-shaped plate 1, the top of support column 21 all is provided with ring flange 22, can dismantle fixed connection in the bottom at end roof beam both ends through ring flange 22 with this stop device during the use, simple to operate easily dismantles.

Further, one side fixedly connected with blotter 23 that second connecting rod 14 was kept away from to crashproof board 13, blotter 23 can slow down the impact when electric block collides with crashproof board 13, protects electric block, avoids causing the damage to the hoist, influences normal use.

The use process comprises the following steps: at first with the bottom at girder both ends of two these stop device difference fixed connection to protect electric block in the removal of girder two directions, avoid electric block and end beam to bump. In the process that the electric hoist moves towards the end beam, the electric hoist is firstly contacted with the anti-collision plate 13, along with the movement of the anti-collision plate 13, the distance sensor 18 senses the distance between the electric hoist and the anti-collision plate 13, when the distance between the distance sensor 18 and the anti-collision plate 13 reaches or is smaller than the set distance, the power supply of the electric hoist is cut off through the PLC controller, the electric hoist stops running, but the electric hoist can continuously move due to inertia to drive the anti-collision plate 13 to move, so that the second connecting rod 14 slides along the sleeve 15, the third spring 16 is compressed, and the first buffering is realized. Along with the continuation of crashproof board 13 remove, second connecting rod 14 promotes second buffer board 9 and slides along spout 20, second spring 12 is compressed, realize the buffering for the second time, along with second spring 12 is compressed, under the effect of second spring 12, first buffer board 2 moves on the horizontal direction, make hinge rod 7 rotate certain angle, thereby drive slider 5 and slide along locating lever 4, first spring 8 is compressed, realize the buffering for the third time, under the cushioning shock attenuation effect many times, finally make electric block stop moving, avoid electric block and end beam to collide, safety and reliability.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.

Claims

1. A stop device for bridge crane which characterized in that: the buffer device comprises a U-shaped plate with a U-shaped structure, and a first buffer plate which is positioned in the U-shaped plate and is vertically arranged, wherein two installation blocks are fixedly connected onto the U-shaped plate, a vertically arranged positioning rod is fixedly connected between the two installation blocks, two symmetrically arranged sliding blocks are slidably connected onto the positioning rod, a positioning block is fixedly connected onto one side of the first buffer plate close to the installation blocks, a hinge rod is arranged between the two sliding blocks and the positioning block, two ends of the hinge rod are respectively hinged with the positioning block and the sliding block, a first spring is arranged on the part of the positioning rod between the sliding block and the installation block, a second buffer plate is vertically arranged on one side of the first buffer plate far from the positioning block, the second buffer plate is positioned in the U-shaped plate, a horizontally arranged first connecting rod is fixedly connected onto the first buffer plate, and one end of the first connecting rod far from the first buffer plate passes through the second buffer plate and is slidably connected with the second buffer plate, the one end fixedly connected with first connecting block that first connecting rod passed the second buffer board, the part that first connecting rod is located between first buffer board and the second buffer board is provided with the second spring, U-shaped board one side still vertically is provided with crashproof board, be provided with a plurality of groups damper between crashproof board and the second buffer board, damper all includes second connecting rod and hollow sleeve, sleeve fixed connection is on the second buffer board, the one end fixed connection of second connecting rod is on crashproof board, the other end and the sleeve sliding connection of second connecting rod, the part that the second connecting rod is located between crashproof board and the sleeve all is provided with the third spring, the equal fixedly connected with second connecting block of one end that the second connecting rod is located the sleeve, install the distance sensor that two symmetries set up on the U-shaped board.

2. A spacing device for a bridge crane as claimed in claim 1, wherein: the equal fixedly connected with guide block in second buffer board top and bottom has seted up the spout along the horizontal direction on the U-shaped board, spout and guide block looks adaptation, spout and guide block sliding connection.

3. A spacing device for a bridge crane as claimed in claim 1, wherein: the top fixedly connected with two support columns of U-shaped plate, the top of support column all is provided with the ring flange.

4. A spacing device for a bridge crane as claimed in claim 1, wherein: one side of the anti-collision plate, which is far away from the second connecting rod, is fixedly connected with a cushion pad.