CN218371317U - Limiting device for crane trolley - Google Patents

Abstract

A limiting device of a crane trolley comprises a buffer mechanism, wherein a supporting beam is fixed on the outer side of a main beam, limiting mechanisms are arranged at two ends of the supporting beam respectively, each limiting mechanism comprises a supporting tube, the supporting tube is fixed on the supporting beam, the top end of the supporting tube is open and is flush with the top surface of the supporting beam, a sliding block is connected in the supporting tube in a sliding mode, an electric push rod is arranged between the sliding block and the bottom surface of the supporting tube, the upper end of the electric push rod is hinged to the sliding block, and the bottom end of the electric push rod is hinged to the bottom of the supporting tube; one side of the crane trolley close to the supporting beam is fixedly provided with a supporting block, the bottom of the supporting block is fixedly provided with an outer sleeve which is vertically arranged, the lower end of the outer sleeve is slidably sleeved with the inner sleeve, a first compression spring is arranged between the top end face of the inner sleeve and the supporting block, the first compression spring is sleeved in the outer sleeve, the lower end of the inner sleeve is rotatably provided with a roller, and the roller is in rolling fit with the top end face of the supporting beam. The utility model discloses simple structure, convenient to use.

Description

Limiting device for crane trolley

Technical Field

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

Background

The crane is mainly used for loading and unloading operations of goods yard, stock yard goods and bulk goods, the crane generally comprises a main beam, an end beam, crane supporting legs, a cart travelling mechanism, a trolley travelling mechanism, a crane trolley and a hoisting mechanism arranged on the crane trolley, wherein the crane trolley is assembled on a trolley travelling track at the top end of the main beam, the crane trolley travels on a track on the crane main beam under the driving of the trolley travelling mechanism to realize the transverse movement of a lifted object. Therefore, when the existing crane trolley controls the travel limit of the crane trolley through the travel limit device, the crane trolley cannot be limited when a crane control system cannot stop the crane trolley due to the damage failure of the travel limit device or the fault of a trolley traveling mechanism, and the trolley rushes out of a track.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve current monkey when passing through the stroke limiter spacing, the stroke limiter damages failure or dolly running gear breaks down can appear, thereby the monkey can not be by spacing technical problem, a monkey stop device is provided, including fixing the buffer gear at girder both ends, the buffer gear symmetry sets up, buffer gear includes the vertical litter of fixing the support column on girder top and the setting of a plurality of level, the support column plays the supporting role, the litter slidable assembly is in holding, and the support column all extends at the both ends of litter, the litter is close to the one end of monkey and is fixed with first baffle, the cover is equipped with second compression spring on the litter between first baffle and the support column, when first baffle received the extrusion, second compression spring is extruded, under the effect of second compression spring reaction force, first baffle can slowly stop, the other end of litter all is fixed with the dog that plays limiting role, the litter sets up two at least, and two litter are the setting from top to bottom, the setting of dog, the setting of litter support column has been avoided shifting out. The outside of girder is fixed with a supporting beam with girder parallel arrangement, a supporting beam plays the supporting role, a supporting beam's both ends all are equipped with stop gear, stop gear includes the stay tube of vertical setting, the bottom of stay tube is sealed, the stay tube is fixed on a supporting beam, the top of stay tube is opened and is supported a supporting beam's top surface parallel and level, sliding connection has the slider in the stay tube, be equipped with electric push rod between the bottom surface of slider and stay tube, electric push rod's upper end is articulated with the slider, electric push rod's bottom is articulated with the bottom of stay tube, electric push rod's free end extension, electric push rod promotes the slider along the vertical rebound of stay tube, electric push rod's free end contracts, electric push rod's free end pulling slider is along the vertical downstream of stay tube. One side that the monkey is close to a supporting beam is fixed with the supporting shoe, the supporting shoe plays supporting role, the bottom of supporting shoe is fixed with the outer sleeve of vertical setting, the lower extreme slidable cover of outer sleeve is equipped with the inner skleeve, be equipped with first compression spring between inner skleeve top face and the supporting shoe, first compression spring overlaps and establishes in the outer sleeve, the rotatable gyro wheel that is equipped with of lower extreme of inner skleeve, the gyro wheel cooperates with the top face roll-in of a supporting beam, first compression spring is greater than the decurrent elasticity of inner skleeve, the gyro wheel rolls along a supporting beam's top.

Preferably, the crane trolley is provided with second baffles which correspond to the first baffles one to one.

Preferably, the diameter of the support tube is greater than the diameter of the roller.

Preferably, the extension range of the electric push rod is larger than the length of the support tube.

Preferably, the electric push rods are powered by cables and connected to the plc controller of the crane.

The scheme has the following advantages:

the buffering mechanism is arranged and plays a role in buffering, when the crane trolley quickly impacts the first baffle, the second compression spring is extruded, and the crane trolley is slowly stopped under the action of the second compression spring; the limiting mechanism is arranged to play a limiting role, the inner sleeve is extruded under the action of the first compression spring, the roller rolls along the top end of the supporting beam, and when the roller moves to the position of the supporting tube and moves onto the sliding block on the supporting tube, the inner wall of the supporting tube plays a role in stopping and limiting the roller and the inner sleeve; due to the arrangement of the electric push rod, the electric push rod pushes the sliding block to move upwards, so that the sliding block is flush with the top end face of the supporting beam, and the roller can be conveniently moved out of the supporting tube.

Drawings

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

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is an enlarged view of part A of FIG. 1;

FIG. 4 is an enlarged view of the portion B of FIG. 1;

fig. 5 is an enlarged schematic view of the part C of fig. 1.

Reference numerals: 1. a main beam; 2. a crane trolley; 3. a buffer mechanism; 4. a support beam; 5. a limiting mechanism; 21. a second baffle; 31. a support pillar; 32. a slide rod; 33. a first baffle plate; 34. a second compression spring; 35. a stopper; 51. supporting a pipe; 52. a slider; 53. an electric push rod; 54. a supporting block; 55. an outer sleeve; 56. an inner sleeve; 57. a first compression spring; 58. and (4) a roller.

Detailed Description

As shown in fig. 1 to 5, a limiting device for a crane trolley comprises buffer mechanisms 3 fixed at two ends of a main beam, wherein the buffer mechanisms 3 are symmetrically arranged, each buffer mechanism 3 comprises a support column 31 vertically fixed at the top end of the main beam 1 and a plurality of horizontally arranged slide rods 32, the support column 31 plays a supporting role, the slide rods 32 can be slidably assembled on the support column 31, two ends of each slide rod 32 extend out of the support column 31, one end of each slide rod 32, which is close to the crane trolley 2, is fixedly provided with a first baffle 33, the slide rods 32 between the first baffle 33 and the support column 31 are sleeved with second compression springs 34, when the first baffle 33 is extruded, the second compression springs 34 are extruded, under the action of the second compression springs 34, the first baffle 33 can be slowly stopped, the other ends of the slide rods 32 are fixedly provided with limit stoppers 35, at least two slide rods 32 are arranged, the two slide rods 32 are arranged vertically, and the arrangement of the stoppers 35 prevents the slide rods 32 from moving out of the support column 31. The outside of girder 1 is fixed with supporting beam 4 with girder 1 parallel arrangement, supporting beam 4 plays the supporting role, supporting beam 4's both ends all are equipped with stop gear 5, stop gear 5 includes the support tube 51 of vertical setting, the bottom of support tube 51 is sealed, support tube 51 is fixed on supporting beam 4, the top of support tube 51 is opened and is leveled with the top surface of supporting beam 4, sliding connection has slider 52 in the support tube 51, be equipped with electric push rod 53 between the bottom surface of slider 52 and support tube 51, the upper end of electric push rod 53 is articulated with slider 52, the bottom of electric push rod 53 is articulated with the bottom of support tube 51, the free end extension of electric push rod 53, electric push rod 53 promotes slider 52 along the vertical upward movement of support tube 51, the free end of electric push rod 53 retracts, the free end pulling slider 52 of electric push rod 53 is along the vertical downward movement of support tube 51. A supporting block 54 is fixed on one side of the crane trolley 2 close to the supporting beam 4, the supporting block 54 plays a supporting role, an outer sleeve 55 which is vertically arranged is fixed at the bottom of the supporting block 54, an inner sleeve 56 is slidably sleeved at the lower end of the outer sleeve 55, a first compression spring 57 is arranged between the top end face of the inner sleeve 56 and the supporting block 54, the first compression spring 57 is sleeved in the outer sleeve 55, a roller 58 is rotatably assembled at the lower end of the inner sleeve 56, the roller 58 is in rolling fit with the top end face of the supporting beam 4, the first compression spring 57 is larger than the downward elastic force of the inner sleeve 56, and the roller 58 rolls along the top end of the supporting beam 4.

Preferably, the crane trolley 2 is provided with second baffles 21 which are arranged in one-to-one correspondence with the first baffles 33.

Preferably, the diameter of the support tube 51 is greater than the diameter 58 of the roller.

Preferably, the extension range of the electric push rod 53 is larger than the length of the support tube 51.

Preferably, the electrical push rod 53 is powered by a cable and connected to the plc controller of the crane.

The use process comprises the following steps:

when the utility model is used, each electric push rod 53 is started, the free end of the electric push rod 53 retracts, the free end of the electric push rod 53 pulls the slide block 52 to vertically move downwards for a certain distance along the inner wall of the support tube 51, and then the power failure push rod is stopped; then starting a trolley travelling mechanism of the crane trolley 2, wherein the travelling mechanism of the crane trolley 2 drives the crane trolley 2 to transversely move along the main beam 1, when the crane trolley 2 moves to one end of the main beam 1, the second baffle plate 21 on the crane trolley 2 touches the first baffle plate 33, the first baffle plate 33 moves towards the support column 31, the second compression spring is compressed by 34 times, under the counter-acting force of the second compression spring 34, the speed of the crane trolley 2 is reduced until the crane trolley stops, the roller 58 moves along the support beam 4, when the crane trolley 2 moves to the end part of the main beam 1, the roller 8 moves to a slide block 52 in the support tube 51 to be damaged, at the moment, the first compression spring 57 extends, and the roller 58 and the inner sleeve 56 play a limiting role under the blocking of the support tube 51; when the crane trolley 2 needs to be started again, the electric push rod 53 is started firstly, the free end of the electric push rod 53 extends and pushes the sliding block 52 to vertically move upwards along the inner wall of the support pipe 51, the first compression spring is compressed by 34 times until the top end face of the sliding block 52 is flush with the top end face of the support beam 4, the trolley travelling mechanism of the crane trolley 2 is started, the crane trolley 2 moves under the action of the trolley travelling mechanism, the roller 58 moves away from the sliding block, after the roller 58 moves away from the sliding block 52, the electric push rod 53 is started again, and the sliding block 52 is pulled by the electric push rod 53 to vertically move downwards along the inner wall of the support pipe 51 to the initial position.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (7)

1. The utility model provides a monkey stop device, is including fixing the buffer gear at the girder both ends, and the buffer gear symmetry sets up its characterized in that: a supporting beam parallel to the main beam is fixed on the outer side of the main beam, two ends of the supporting beam are respectively provided with a limiting mechanism, each limiting mechanism comprises a supporting tube which is vertically arranged, the supporting tube is fixed on the supporting beam, the top end of the supporting tube is open and is flush with the top surface of the supporting beam, a sliding block is connected in the supporting tube in a sliding mode, an electric push rod is arranged between the sliding block and the bottom surface of the supporting tube, the upper end of the electric push rod is hinged to the sliding block, and the bottom end of the electric push rod is hinged to the bottom of the supporting tube; one side of the crane trolley close to the supporting beam is fixedly provided with a supporting block, the bottom of the supporting block is fixedly provided with an outer sleeve which is vertically arranged, the lower end of the outer sleeve is slidably sleeved with the inner sleeve, a first compression spring is arranged between the top end face of the inner sleeve and the supporting block, the first compression spring is sleeved in the outer sleeve, the lower end of the inner sleeve is rotatably provided with a roller, and the roller is in rolling fit with the top end face of the supporting beam.

2. A crane trolley spacing device as claimed in claim 1, wherein: the buffer mechanism comprises a support column vertically fixed at the top end of the main beam and a plurality of horizontally arranged sliding rods, the sliding rods can be assembled on the support in a sliding manner, the support column extends out of two ends of each sliding rod, a first baffle is fixed at one end of each sliding rod close to the crane trolley, and a second compression spring is sleeved on each sliding rod between the first baffle and the support column; the other end of the slide rod is fixed with a stop block for limiting.

3. A crane trolley spacing device as claimed in claim 2, wherein: the slide bars are at least two, and the two slide bars are arranged up and down.

4. A crane trolley spacing device as claimed in claim 3, wherein: and the crane trolley is provided with second baffles which correspond to the first baffles one by one.

5. A crane trolley spacing device as claimed in claim 1, wherein: the diameter of the supporting tube is larger than that of the roller.

6. A crane trolley spacing device as claimed in claim 5, wherein: the extension range of the electric push rod is larger than the length of the supporting tube.

7. A crane trolley spacing device as claimed in claim 6, wherein: the electric push rod is connected with the power supply through a cable and is connected with a plc controller of the crane.

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