Background
In the process of railway operation, a train needs to repeatedly run on a steel rail, and the steel rail is gradually worn and consumed after a long time, so that the steel rail generates various damages, such as hole cracks, rail head cracks, falling blocks, peeling, nuclear damage and the like, and serious negative effects are caused on the running safety. The damaged and failed steel rail section must be replaced to ensure the driving safety.
At present, when a work system replaces a steel rail, either manpower is relied on or a rail replacing vehicle is used. The rail replacing vehicle is a large-scale rail maintenance machine, the product is high in price, the use and maintenance cost is high, and the rail replacing vehicle is generally only equipped in a large-scale work station section. The large rail replacing vehicle is mostly used in the heavy repair period or the large-scale centralized replacement of a large number of rails. The operation efficiency is higher, but the use cost is overhigh, the use place is limited, and the method is not suitable for the small-range local steel rail replacement operation.
At present, when the steel rail is partially replaced, only manpower can be used in most cases due to the lack of small-sized special steel rail replacing equipment. Many line workers use crowbars or other tools to pull out old rails and then pull in new rails, and even move steel rails directly by manpower. The required personnel are more, the labor intensity is higher, the operation efficiency is low, and the development requirements of mechanization and intellectualization of the operation of the existing work system are not met.
Disclosure of Invention
The invention aims to provide a hydraulic rail replacing machine which is convenient to use and high in working efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydraulic rail replacing machine comprises a horizontally arranged main frame, wherein a clamping assembly for clamping a steel rail to be replaced, a translation assembly for carrying the steel rail to be replaced and a lifting assembly for lifting the steel rail to be replaced are arranged on the main frame, and the clamping assembly can horizontally move along the main frame; the clamping assembly, the translation assembly and the lifting assembly are all driven by hydraulic oil cylinders, and the clamping assembly, the translation assembly and the lifting assembly are respectively and independently controlled by different hydraulic control valve groups.
In particular, the main frame is composed of two parallel beam frames, and the lengths of the two main frames are adjustable.
Particularly, the clamping assembly comprises at least two groups of clamping jaw units, each group of clamping jaw unit comprises a clamping hydraulic cylinder and a pair of clamping jaws connected to the end head of a telescopic rod of the clamping hydraulic cylinder, the clamping jaws are connected to the mounting seat, and when the telescopic rod of the clamping hydraulic cylinder extends or retracts, the clamping jaws can be driven to hold the steel rail to be replaced.
Particularly, the translation assembly comprises at least two groups of moving units, each group of moving units comprises a translation hydraulic cylinder, a walking support plate connected to the end of a telescopic rod of the translation hydraulic cylinder, a guide seat plate arranged on the walking support plate, and a group of translation rollers and a group of guide wheels which are respectively arranged on the guide seat plate; the walking support plate is the mounting seat of the clamping pincers.
Particularly, the bottom surface of the walking support plate is provided with a rail surface walking roller, and the clamping pincers are provided with a rail clamping roller.
In particular, a guide rail is provided in the main frame, and the guide seat plate, the translation roller and the guide wheel are mounted in the guide rail.
In particular, the main frame is provided with a limit stop.
Particularly, the lifting assembly comprises a lifting hydraulic cylinder and a base arranged at the end of a telescopic rod of the lifting hydraulic cylinder, and the lifting hydraulic cylinder is connected to the main frame.
Particularly, the main frame is provided with an anti-turnover frame, and the edge of the anti-turnover frame protrudes out of the side edge of the main frame.
Particularly, at least two oil pipe guide rods are arranged on the main frame, and each oil pipe guide rod is composed of two sections of structures which are hinged with each other; and an oil pipe fixing position is arranged on the oil pipe guide rod.
Particularly, a self-walking hydraulic motor is arranged on the walking support plate, and the output end of the self-walking hydraulic motor is connected to the rail surface walking roller and can drive the rail surface walking roller to rotate along the steel rail to be replaced.
The main frame of the hydraulic rail replacing machine is provided with the clamping assembly, the translation assembly and the lifting assembly which respectively work, so that the steel rails can be clamped, lifted and carried, and the steel rails can be quickly removed and laid in the rail replacing operation in the engineering. Compared with a large rail replacing vehicle, the hydraulic rail replacing machine is more flexible and economical to use and wider in application range; compared with manual operation, the hydraulic rail replacing machine is high in working efficiency and simple to operate, manpower can be reduced, labor intensity is reduced, and personnel cost is saved.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The embodiment discloses a hydraulic rail replacing machine. As shown in fig. 1 to 6, the hydraulic rail replacing machine comprises a horizontally arranged main frame 1, wherein a clamping assembly for clamping a rail 5 to be replaced, a translation assembly for carrying the rail 5 to be replaced, a lifting assembly for lifting the rail 5 to be replaced, an engine 6 and a hydraulic oil tank 7 are mounted on the main frame 1, and the clamping assembly can horizontally move along the main frame 1; the clamping assembly, the translation assembly and the lifting assembly are driven by hydraulic oil cylinders and are respectively controlled by different hydraulic control valve groups independently and mutually noninterfere. The main frame 1 is formed by welding high-strength steel, has sufficient strength and ensures the stability and the safety of equipment.
The hydraulic system has large driving force, is suitable for moving the steel rail which is a heavy load work needing larger load capacity, can realize the clamping, lifting and carrying of the steel rail 5 to be replaced, and achieves the aim of quickly removing or laying the steel rail; the hydraulic driving device is small in size and light in weight, and is beneficial to controlling the overall structural size and weight of the rail replacing machine, so that the rail replacing machine is suitable for more working environments; the hydraulic driving mode has the advantages of high rigidity, high precision, quick response, wide speed regulation range, stepless speed change and high reliability, and is very suitable for the actual situation of rail replacement operation.
The main frame 1 can be made of one beam frame, but preferably consists of two parallel beam frames, and the length of the main frame 1 is adjustable to adapt to more working environments. The specific mode of the main frame 1 length adjustment is not limited, and preferably, the main frame 1 is provided with a dismounting structure, and the extension part is installed on the main frame 1 in a bolt connection mode. When the extension part is not installed on the main frame 1, the protection plate 13 is installed on the end of the main frame 1, so that the end of the main frame 1 is prevented from colliding, and the component structure installed on the main frame 1 is also prevented from being separated from the main frame 1.
The clamping assembly comprises two groups of clamping jaw units which are controlled in a left-right separated mode. As shown in fig. 5, each set of clincher units includes a clamping cylinder 21 and a pair of clamping jaws 22 attached to the ends of the telescopic rods of the clamping cylinder 21. The telescopic rod (piston rod) of the clamping hydraulic cylinder 21 linearly acts and is converted into the opening and closing action of the clamping pincers 22 through the connecting rod mechanism, and the purpose of clamping the steel rail 5 to be replaced is achieved. Specifically, when the telescopic rod of the clamping hydraulic cylinder 21 extends, the clamping pincers 22 are opened, and when the telescopic rod retracts, the clamping pincers 22 clamp.
The specific structure of the link mechanism is not limited, and the existing structure in the mechanical field can convert the linear motion of the telescopic rod into the swing of the clamping pincers 22. For example, the pair of clamping jaws 22 are hinged on the mounting seat, and the telescopic rod pushes the top of the clamping jaws 22 to move downwards, so that the hinged parts of the clamping jaws 22 translate along the mounting seat while the bottoms of the pair of clamping jaws 22 are separated away from each other; when the telescopic rod pulls the top of the clamping pincers 22 to move upwards, the hinged parts of the clamping pincers 22 move horizontally along the mounting seat, and simultaneously the bottoms of the pair of clamping pincers 22 approach each other to hold the steel rail 5 to be replaced.
As shown in fig. 6, the clamping pincers 22 can be clamped on the bottom surface of the top structure of the i-shaped rail 5 to be replaced, and can lift the rail 5 to be replaced in the subsequent process.
On the basis of the structure, the translation assembly comprises at least two groups of moving units which are controlled in a left-right separated mode. Each group of moving units comprises a translation hydraulic cylinder 31, a walking support plate 32 connected to the end of a telescopic rod of the translation hydraulic cylinder 31, a guide seat plate 33 arranged on the walking support plate 32, and a group of translation rollers 34 and a group of guide wheels 35 which are respectively arranged on the guide seat plate 33; the clamping pincers 22 are connected to a running support plate 32. Each group of translation rollers 34 comprises four rollers which are symmetrically arranged, and the rotating shaft is in the vertical direction; each group of guide wheels 35 comprises four symmetrically arranged rollers, and the rotating shafts are in the horizontal direction.
A guide rail is arranged in the main frame 1, and a guide seat plate 33, a translation roller 34 and a guide wheel 35 are arranged in the guide rail and connected with a clamping assembly and can drive the clamping assembly to move left and right. The guide rail may be a groove dug in the main frame 1 alone or a gap between two beam frames constituting the main frame 1. The translation assembly is connected with the clamping assembly, and the walking support plate 32, the clamping pincers 22 and other structures can freely deflect at a certain angle around the rotating shaft 23, so that the hydraulic rail changer can walk on the rail 5 to be replaced with a changed rail gauge, and the rail gauge of the rail 5 to be replaced is greatly changed during rail laying operation.
Rail surface running rollers 321 are mounted on the bottom surface of the running support plate 32, and rail clamping rollers 221 are mounted on the clamping pincers 22. During the rail replacement process, the clamping pincers 22 are optimally clamped in the middle of the rail 5 to be replaced, and the rail 5 to be replaced can keep balance during lifting. The rail clamping roller 221 can save rail aligning time and ensure that the equipment can normally run under the condition of clamping the rail.
When the hydraulic rail replacing machine needs to move along the steel rail 5 to be replaced, the main frame 1 or the walking support plate 32 can be pushed manually, or the lifting ring 14 is grabbed to drag the hydraulic rail replacing machine, so that the labor intensity is high, and the working efficiency is low; the self-walking mode can also be used, and the self-walking hydraulic motor 36 arranged on the walking support plate 32 is used for driving the rail surface walking roller 321 to rotate, so as to drive the hydraulic rail replacing machine to move forwards or backwards along the steel rail 5 to be replaced, thereby saving time and labor. The self-walking mode and the manual pushing mode can be switched by the clutch 37, and the worker can select a proper operation mode.
In order to ensure that the gauge can be accurately controlled when the steel rail is placed and to protect the safety of equipment, the main frame 1 is provided with a limit stop.
On the basis of the structure, the lifting assembly comprises a lifting hydraulic cylinder 41 and a base 42 arranged at the end of a telescopic rod of the lifting hydraulic cylinder 41, and the lifting hydraulic cylinder 41 is connected to the main frame 1. Preferably, the lifting assembly comprises two vertical hydraulic cylinders which act synchronously and are symmetrically arranged in the middle of the main frame 1, and the ends of the telescopic rods of the two vertical hydraulic cylinders are connected to the two opposite sides of the same base 42, so as to ensure the stability of the equipment. After the clamping pincers 22 hold the rail 5 to be replaced, the lifting hydraulic cylinder 41 is started, and after the telescopic rod presses the base 42 on the ground, the main frame 1 and the components mounted on the main frame 1 are lifted upwards along with the body of the lifting hydraulic cylinder 41.
On the basis of the structure, the main frame 1 is provided with the anti-turnover frame 11, and the edge of the anti-turnover frame 11 protrudes out of the side edge of the main frame 1 to a certain distance. When the hydraulic rail replacing machine turns over, the anti-overturning frame 11 can be supported on the ground or other surrounding structures, so that the hydraulic rail replacing machine is prevented from overturning completely, and devices on the main frame 1 are prevented from being damaged.
At least two oil pipe guide rods 12 are arranged on the main frame 1, and each oil pipe guide rod 12 consists of two sections of structures which are hinged with each other; an oil pipe fixing position is arranged on the oil pipe guide rod 12. When the clamping pincers 22 horizontally move left and right, the oil pipe guide rod 12 can be correspondingly bent, so that the oil pipe installed on the oil pipe guide rod is guaranteed not to be knotted or bent, the oil pipe is kept smooth, and the oil pipe is prevented from being abraded.
The hydraulic rail replacing machine preferably takes a diesel engine as a power source, drives a duplex hydraulic pump to supply oil for a hydraulic control system, adopts hydraulic control for all actions of the whole machine, and is suitable for the loading and unloading work of laying new rails and replacing steel rails. The method is particularly suitable for paving 43-75 (kg/m) steel rails of various types, and the paving gauge range is 1000-3400 mm. One operator can easily operate the equipment, the labor intensity of the operator is reduced, and the operation efficiency is improved. Compared with a large rail replacing vehicle, the rail replacing vehicle is more economical and flexible, and the rail replacing operation cost is greatly saved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.