CN219885527U - Power trolley for auxiliary installation - Google Patents

Abstract

The utility model provides a power trolley for auxiliary installation, which is provided with a crawler travelling mechanism, a rope threading hoisting mechanism, a folding arm type hoisting mechanism, a pin shaft oil cylinder and the like, and is driven by hydraulic pressure. The hydraulic system is provided with a power source by a load-sensitive main pump with pressure cutoff and a gear pump, a left motor and a right motor of a crawler travelling mechanism are controlled by a first linkage and a second linkage of a four-linkage electric proportional remote control multi-way valve with a valve back compensation function, a rope threading hoisting mechanism motor is controlled by a third linkage, and rotation, amplitude change, expansion and the like of a folding arm type lifting mechanism are controlled by a fourth linkage through a first reversing valve. The first reversing valve adopts a four-linkage manual reversing valve in view of the safety of operation. The gear pump provides an oil source for the pin shaft oil cylinder through a second reversing valve with an electric proportion remote control function. The utility model has the functions of plugging and unplugging the pin shaft, rope threading and hoisting, assisting in lifting and the like, can provide omnibearing support for assisting in mounting of a large crane, and improves the mounting efficiency.

Description

Power trolley for auxiliary installation

Technical Field

The present utility model relates to a power trolley for auxiliary installation, for example to assist in the assembly of large lifting devices.

Background

In the structure of the large crawler crane, a plurality of positions of an upper and lower trolley slewing bearing, a truss arm section, a frame, a crawler beam and the like are connected by adopting pin shafts, and the upper and lower trolley and the arm support are required to be disassembled and transported separately during transition; after reaching the operation site, assembling and recovering the operation site; because the diameter of the pin shaft is larger, the weight is heavier, the number is more, the difficulty of manual insertion and extraction is high, the efficiency is low, and the danger coefficient is high, and each insertion and extraction oil cylinder is provided with one insertion and extraction oil cylinder, so that the weight is increased, and the cost is higher. In view of this, a power car capable of realizing the function of inserting and extracting pins at each point has been developed.

The existing power trolley is of a hand-push wheel type structure, a pin shaft oil cylinder is mounted on the existing power trolley, an engine is used as a prime motor to drive a gear pump to output power oil, and pressure oil is controlled to enter a large cavity or a small cavity of the pin shaft oil cylinder through a manual reversing valve, so that the pin shaft is pushed into or pulled out of a pin hole. There is the problem of function singleness, can't satisfy more supplementary installation demands.

Disclosure of Invention

The utility model aims to: the utility model aims to provide a multifunctional power trolley for auxiliary installation.

The technical scheme is as follows: the utility model provides a power trolley for auxiliary installation, which is provided with a rope threading hoisting mechanism, a hoisting mechanism and a pin shaft oil cylinder, wherein the rope threading hoisting mechanism, the hoisting mechanism and the pin shaft oil cylinder provide hydraulic power through a hydraulic system.

The utility model has the functions of rope threading and hoisting and truck-mounted hoisting besides the basic function of inserting and pulling the pin shaft.

Further, the hand-push wheel type power trolley is weak in passing performance, and the power trolley is heavy in weight, is laborious to use and cannot adapt to more complex construction sites. For this reason, still be equipped with crawler travel mechanism on power dolly, hydraulic system still provides hydraulic power for crawler travel mechanism. The ground pressure of the walking crawler belt is small, the trafficability characteristic is greatly improved, and the walking crawler belt can adapt to various complex construction environments, such as complex environments of special wetlands, water network wet road surfaces and the like.

Further, a traction hook is arranged at the tail part of the power trolley frame. The walking caterpillar has strong ground grabbing capability, and provides guarantee for the traction function. The traction hook can also perform function expansion besides providing tension support. For example, the dead weight is increased by hanging an additional balancing weight through a pulling plate/a steel wire rope so as to ensure that the trolley is not reversely pulled, and then, if other trolleys are hung behind the trolley to perform function expansion, for example, the trolley with the bucket is hung, so that the transportation function is realized.

Further, the hydraulic system comprises a load-sensitive main pump with pressure cut-off and a four-way electric proportional remote control multi-way valve with pressure compensation after the multi-way valve is provided with a valve; the first and second multi-way valves are respectively used for controlling a left traveling motor and a right traveling motor of the crawler traveling mechanism, the third multi-way valve is used for controlling a hoisting motor of the rope threading hoisting mechanism, and the fourth multi-way valve is used for controlling the hoisting mechanism through the first reversing valve; the first reversing valve adopts a four-linkage manual reversing valve.

Further, the lifting mechanism adopts a folding arm type lifting mechanism, and the fourth link of the multi-way valve controls the rotation, amplitude variation and expansion of the folding arm type lifting mechanism through the first reversing valve. Compared with a straight arm type lifting mechanism, the folding arm type lifting mechanism is more compact, and the size of the power trolley can be reduced.

Further, the hydraulic system comprises a gear pump, and the gear pump is connected with the pin cylinder through a second reversing valve; the second reversing valve has an electric proportional remote control function.

In the technical scheme, the load sensitive hydraulic system and the electric proportional remote control are adopted, so that remote accurate control can be realized, and compared with a traditional manual on-site operation mode, the method is higher in applicability. Because the whole power trolley has smaller volume and limited space, if the lifting with the trolley adopts remote control, the blind area is larger, and from the aspect of operation safety, the first reversing valve adopts a four-linkage manual reversing valve.

Further, the main pump and the gear pump use the engine or the motor as a power source.

Further, a hydraulic oil radiator is arranged in the oil return pipeline, and is driven by independent oil, and oil is discharged from a gear pump to serve as power.

Further, the pin cylinder is connected with the hydraulic system by a quick connector.

The pin shaft oil cylinders can be selected according to actual requirements, specifically, the arm support pin shaft oil cylinders are fixed on the arm support, the track pin shaft oil cylinders are fixed on the frame, and the two mounting oil cylinders only need gear pumps to provide oil sources. If the original vehicle only has a pin shaft and does not have a cylinder, a power pin shaft cylinder is selected. The oil cylinder in any form can be connected with a hydraulic system on the power trolley through a quick connector.

The beneficial effects are that: compared with the prior art, the utility model has the following advantages: the integrated crane has the functions of plugging and unplugging the pin shaft, rope threading and hoisting, and the like, can provide omnibearing support for auxiliary installation of a large crane, lighten labor intensity and improve installation efficiency. The utility model is not only suitable for auxiliary installation of large-sized hoisting equipment, but also is suitable for auxiliary installation of other door-type large-sized equipment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the embodiments of the present utility model, and it is obvious that the drawings described below are only embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power cart according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a hydraulic system of a power cart according to an embodiment of the present utility model;

reference numerals: 1, a hydraulic oil tank; 2, an oil absorption filter; 3, a main pump; 4, a multi-way valve; 5, a crawler belt travelling mechanism; 501, left walking motor; 502, a right walking motor; 6, rope threading winding mechanism; 601, a winch motor; 7, a hoisting mechanism; 701, a first luffing cylinder; 702, a second luffing cylinder; 703, telescoping cylinder; 704, a rotary motor; 705, a first reversing valve; 8, a gear pump; 9, a second reversing valve; 10, a pin cylinder; 11, an overflow valve; 12, a hydraulic oil radiator; 13, an oil return filter; 14, an engine; 15, pulling the hook.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is obvious that the described embodiments are not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model based on the embodiments of the present utility model.

As shown in fig. 1 and 2, a power trolley for auxiliary installation is provided with a crawler travelling mechanism 5, a rope threading hoisting mechanism 6, a hoisting mechanism 7 and a pin cylinder 10, wherein the crawler travelling mechanism 5, the rope threading hoisting mechanism 6 and the hoisting mechanism 7 provide hydraulic power through a main pump 3 in a hydraulic system, and the pin cylinder 10 provides hydraulic power through a gear pump 8 in the hydraulic system. The main pump 3 and the gear pump 8 both take the engine 14 as a power source, and a fuel tank beside the engine 14 supplies oil to the engine 14.

Specifically, the crawler travel mechanism 5 includes two travel motors, a left travel motor 501 and a right travel motor 502, respectively, wherein the left travel motor 501 drives a left crawler wheel, and the right travel motor 502 drives a right crawler wheel.

A traction hook 15 is arranged at the tail part of the power trolley frame. The ground grabbing performance of the walking crawler belt is suitable for various complex fields, the traction requirement of large single rope pulling force can be met by matching with the tail hook, and the dead weight can be increased by hanging an additional balancing weight through the pulling plate/the steel wire rope, so that the trolley is ensured not to be reversely dragged. In addition, other trolleys can be hung by the traction hook 15 for function expansion, such as trolley with a bucket, accessories for transportation and installation, tools and the like.

The rope threading winch mechanism 6 is driven by a winch motor 601, and auxiliary steel rope threading can be realized by using the rope threading winch mechanism 6. When the rope outlet angle of the host machine is larger, the power trolley can move back and forth, and the rope outlet angle of the rope threading is reduced, so that the rope can be threaded quickly.

The left walking motor 501, the right walking motor 502 and the winding motor 601 are all quantitative motors, so that the cost is low, and the driving torque requirement can be met.

The lifting mechanism 7 is a folding arm type lifting mechanism and comprises a first amplitude changing oil cylinder 701, a second amplitude changing oil cylinder 702, a telescopic oil cylinder 703, a rotary motor 704 and a first reversing valve 705, wherein the bottom of the lifting mechanism 7 is arranged on a power trolley through a slewing bearing, and the rotary motor 704 can drive the lifting mechanism 7 to rotate. Because the whole car has smaller volume and limited space, if the car is lifted by remote control, the blind area is larger, and therefore, from the aspect of operation safety, the first reversing valve 705 in the embodiment adopts a four-way manual reversing valve. The swing motor 704 employs a fixed-weight motor. The four-linkage manual reversing valve can control the folding arm type lifting mechanism to realize two-stage amplitude variation, single-cylinder multi-section expansion and rotation. In addition, in order to prevent stall phenomenon when the crane weight is lowered in amplitude variation or retracted in expansion, a balance valve load is adopted for maintaining, and the prior art is not described herein. The folding arm type lifting mechanism has compact structure, multiple degrees of freedom and high flexibility, can meet the requirement of lifting in a narrow space, and can lift accessories, tools and the like for installation to a certain height and distance.

Referring to fig. 2, the hydraulic system includes a main pump 3 and a multiplex valve 4, wherein the main pump 3 is a load-sensitive main pump with pressure cut-off. The multi-way valve 4 is a four-way electric proportional remote control multi-way valve and is provided with pressure compensation after the valve. The main pump 3 controls the operation of each actuator through the multi-way valve 4. Specifically, the first and second joints of the multi-way valve 4 are respectively used for controlling the left traveling motor 501 and the right traveling motor 502 to control the traveling of the power trolley; a third triple control hoist motor 601 to implement rope threading hoist; the fourth linkage is used for controlling the rotation, amplitude variation and extension of the folding arm type lifting mechanism of the vehicle through the first reversing valve 705. Because the multi-way valve 4 has the function of electric proportion remote control, the functions of walking, winding and the like can be realized by remote control.

In the hydraulic system, the low-pressure small-displacement gear pump 8 supplies oil for the auxiliary installation pin shaft oil cylinder 10, the pin shaft oil cylinder 10 is connected with the gear pump 8 through the second reversing valve 9, the second reversing valve 9 is independently placed on the frame of the power trolley, the total weight of the pin shaft oil cylinder 10 is reduced, and the handheld operation is lighter and more convenient. The pin cylinder 10 is connected with a hydraulic system by adopting a quick connector, and is plug and play. The second reversing valve 9 has an electric proportion remote control function, can use a remote controller to remotely operate the extension and retraction of the pin cylinder 10, realizes pin pulling and bolt pulling, and can adapt to the auxiliary installation of pin pulling and inserting with different distances and heights. A relief valve 11 is provided in the hydraulic system line, which relief valve 11 serves to limit the hydraulic system oil pressure.

In the hydraulic system, hydraulic oil is supplied from a hydraulic oil tank 1, enters a main pump 3 and a gear pump 8 through an oil suction filter 2, and returns to the hydraulic oil tank 1 through an oil return filter 13. The hydraulic oil radiator 12 is arranged in the oil return pipeline, and the hydraulic oil radiator 12 is driven by independent oil. Specifically, the oil discharged from the gear pump 8 is divided into two paths, one path is used for driving the pin cylinder 10, and the other path is used for driving the hydraulic oil radiator 12.

The power trolley provided by the embodiment of the utility model can realize the functions of rope threading winch, folding arm hoisting, auxiliary traction and the like besides the basic function of plugging and unplugging the pin shaft, and can provide omnibearing support for auxiliary installation of a large crane. The control mode adopts valve back compensation multi-loop load sensitivity and electric proportion remote control, thereby avoiding redundant pilot pipelines and realizing remote accurate control.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions that may be easily conceived by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (9)

1. The power trolley for auxiliary installation is characterized in that a rope threading hoisting mechanism, a hoisting mechanism and a pin shaft oil cylinder are arranged on the power trolley, and hydraulic power is provided by the rope threading hoisting mechanism, the hoisting mechanism and the pin shaft oil cylinder through a hydraulic system.

2. The powered trolley of claim 1 wherein the powered trolley is provided with a track running gear and the hydraulic system also provides hydraulic power to the track running gear.

3. The power trolley according to claim 2, wherein the tail of the power trolley frame is provided with a traction hook.

4. The powered cart of claim 2, wherein the hydraulic system includes a load-sensitive main pump with pressure cutoff and a four-way electrical proportional remote control multi-way valve with pressure compensation after the valve; the first and second multi-way valves are respectively used for controlling a left traveling motor and a right traveling motor of the crawler traveling mechanism, the third multi-way valve is used for controlling a hoisting motor of the rope threading hoisting mechanism, and the fourth multi-way valve is used for controlling the hoisting mechanism through the first reversing valve; the first reversing valve adopts a four-linkage manual reversing valve.

5. The power trolley according to claim 4, wherein the lifting mechanism is a folding arm type lifting mechanism, and the multi-way valve fourth-pass first reversing valve controls rotation, amplitude and expansion of the folding arm type lifting mechanism.

6. The power trolley of claim 4 wherein the hydraulic system comprises a gear pump connected to the pin cylinders via a second reversing valve; the second reversing valve has an electric proportional remote control function.

7. The powered vehicle of claim 6, wherein the main pump and gear pump are powered by an engine or motor.

8. The power trolley according to claim 6, wherein a hydraulic oil radiator is arranged in the oil return pipeline, and the hydraulic oil radiator is driven by independent oil radiator and takes oil discharged by a gear pump as power.

9. The power trolley according to claim 1 or 6, characterized in that the pin cylinders are connected to the hydraulic system with quick joints.