JP2001032202A - Bolt untightening machine of rail tightening bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of the untightening work of a rail tightening bolt and the control accuracy of the bolt tightening torque, and to record, arrange and analyze the tightening torque in tightening the bolt. SOLUTION: The bolt untightening machine A comprises a main frame 1 having traveling wheels, an engine hydraulic unit 2, a bolt untightening unit 3, a lubricating oil pump unit 4, an operation handle 5, and a handle 6 for vertically moving a bolt untightening part. A controller unit 7 is mounted on the main frame 1, the unit 7 being provided with a PC card unit body to receive the bolt untightening torque signal from a bolt untightening torque detection device provided on the bolt untightening unit 3 to digitize the bolt untightening torque signal, and to record it in a PC card. The bolt untightening torque during the bolt untightening work is recorded and preserved in the PC card.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a bolt disengaging machine used for repairing a railway line, and periodically loosens a rail fastening bolt (hereinafter, referred to as a bolt) for fastening a rail to a sleeper.・ Efficient lubrication and tightening work (hereinafter referred to as “bolt loosening work”) can be performed efficiently with a predetermined size of bolt tightening torque without variation, and the tightening torque of each bolt is automatically recorded on the IC card. The present invention relates to a bolt disengaging device for rail fastening bolts, which enables recording, management, analysis, organization, and the like of work result data after maintenance and inspection work to be performed extremely easily and accurately.

[0002]

2. Description of the Related Art In a railway track, as a maintenance and inspection of bolts for fastening rails to sleepers, there is a work of loosening bolts every predetermined period (usually three years), lubricating, and then retightening. Is being done. By loosening, lubricating, and retightening the bolt, corrosion or rust of the bolt, loosening due to vibration, etc. is prevented or corrected, and the rail is secured to the sleepers with a predetermined strength to ensure the safety of the track Because it is done.

[0003] As a bolt disengaging machine used for this kind of bolt unwinding work, a bolt disengaging machine having the configuration shown in Figs. 9 and 10 (Japanese Patent Publication No. 60-1149) and a patent No. No. 2,860,860, Patent No. 2,608,595, Reality 7
-44450 bolt distorter has been developed and published.

[0004] That is, the former bolt disengaging machine A according to Japanese Patent Publication No. 60-1149 has a prime mover 31, a hydraulic motor 31 on a traveling carriage 30 traveling on rails (not shown) as shown in FIGS. Device 32, operating mechanism 33, hydraulic motor 34,
It is constituted by providing a speed change mechanism 35, a release socket 36, an oiling nozzle 37, an oiling pump 38, a handle 39 and the like.

[0005] At the time of bolt disengaging work, first, the prime mover 3
1 and the hydraulic device 32 is driven by the power of the prime mover 31.
Activate Next, the handle 39 is operated to lower the bolt releasing portion including the hydraulic motor 34 and the speed change mechanism 35, so that the releasing socket 36 is fitted to the head of a bolt (not shown). Operation handle 33a
Is operated to rotate the hydraulic motor 34, and the bolt (not shown) fitted to the disassembling socket 36 is rotated in the loosening direction by the rotational driving force.

At the same time as the rotation of the bolt in the loosening direction is started by the hydraulic motor 34, the lubrication pump 38 is automatically operated, and the low-viscosity lubricating oil in the lubricating oil tank 38a is supplied to the lubricating nozzle 37. . As a result, a fixed amount of low-viscosity lubricating oil is injected and applied to the outer peripheral surface of the bolt which is turned in the loosening direction by the dissolving socket 36 and comes out upward.

When the bolt is rotated a predetermined number of times in the loosening direction and a predetermined amount of lubricating oil is injected into the outer peripheral surface of the loosened bolt, the operation of the lubrication pump 38 is automatically stopped, and the hydraulic motor is stopped. The rotation direction of the bolt 34 is automatically switched to the bolt tightening direction (tightening direction).

The bolt coated with lubricating oil is
6, the hydraulic motor 34 is automatically stopped when the bolting torque applied to the socket 36 reaches a predetermined set value as the bolting torque approaches the completion and the hydraulic motor 34 is automatically stopped. Is completed.

When the disengaging operation is completed, the handle 39 is operated to move the hydraulic motor 34 and the speed change mechanism 35 upward, and the traveling carriage 30 is moved forward, so that the socket 36 is placed immediately above the next bolt. Position. 9 and 10, the hydraulic motor 3
4. Although only one bolt tensioning portion U including the transmission mechanism 35 and the tensioning socket 36 is provided, two bolt tensioning portions U are symmetrically arranged around the rail, and In some cases, two inner and outer bolts are used at the same time.

In FIGS. 9 and 10, reference numeral 40 denotes a link mechanism, and reference numerals 41a to 41c denote hydraulic hoses. In addition, Japanese Patent Nos. 2860860 and 2860859 and Japanese Utility Model Publication No.
The bolt disengaging machine such as No. 4450 uses a so-called impact wrench as a bolt disengaging part.
4 in that the structure is different from that of the former bolt dissector.

The bolt disengaging device A shown in FIGS.
The bolt can be unraveled with a relatively high efficiency by a small number of workers, and has excellent practical utility. However, there are still many problems to be solved in this bolt disintegrator A. Among them, the points that are particularly problematic are:
Tightening torque at the time of bolt retightening is likely to vary, it is difficult to improve the efficiency of bolt tightening work, it takes time to record and manage data such as tightening torque, lubricate high viscosity oil It is difficult to use as oil (lubricating oil). Also, the latter patent No. 28
Since the bolt disengaging machine according to No. 60860 and the like tightens bolts using an impact wrench, the variation in the bolt tightening torque is larger than the former, and the work accuracy and work of the bolt disengaging work are increased. There is a problem in the reliability point of.

[0012] The bolt tightening torque in the bolt loosening operation is defined to be in the range of 1300 to 1500 kgf-cm, and it is not possible to maintain the bolt tightening torque in the specified range. It is an important factor in ensuring the safety of the track.

The bolt tightening torque is usually detected by a tightening torque detecting device comprising a load cell or the like provided in the bolt breaking unit, and is displayed on a display panel of the bolt breaking unit every time the bolt is broken. It has become. However, in actual bolt tightening work, a large variation occurs in the displayed bolt tightening torque, and unless the bolt is loosened and tightened several times, the tightening torque does not fall within the specified value range. There are many cases. As a result, the time required for the bolt breaking operation becomes longer, and a problem arises in the reliability of the control accuracy of the bolt tightening torque itself.

Further, in the conventional bolt disengaging machine, the recording of the bolt tightening torque displayed on the display panel of the bolt disengaging unit is performed by an operator in charge of recording by reading the displayed value visually and manually. This is done by writing on the paper, and the criminal worker only visually checks the magnitude of the tightening torque, and moves on to the next bolt cleaving operation.

Therefore, it takes a lot of trouble to record the bolt tightening torque, and in a work environment where the illumination is insufficient at night or the like, a reading error easily occurs and the reliability of the management of the bolt tightening torque itself is high. Will decrease.

Also, the contrast (correlation) between the bolts on the track that were actually subjected to the refining work and the recorded bolt tightening torques is only visually checked by the recording staff. is there. Therefore, if there was an error in the recording of the contrast relationship, even if it was later found from the recorded data of the bolt tightening torque that there was a defect in a part of the bolt disassembling operation, there was a defect in the dismantling operation. There is a problem that the bolt cannot be accurately determined. As described above, in the conventional bolt disintegrator, recording and management of bolt tightening torque,
Many problems remain regarding the use of records.

Further, in the bolt disengaging operation, the durability of the bolt protection function greatly varies depending on the characteristics of the lubricating oil to be injected (especially its viscosity). In general, the higher the viscosity of the lubricating oil to be injected, the higher the durability of the bolt protection function. For example, when non-drying industrial grease oil (Cosmo Oil Lubricants Co., Ltd.) is used, the previously unreliable Dry low-viscosity lubricating oil (Cosmo Oil Co., Ltd., JROS6
4007-10) (3 years)
In contrast, the inspection interval can be extended to six years.

However, in the conventional bolt disintegrator, no consideration is given to using high-viscosity grease oil as lubricating oil. There is a problem that it is not possible to smoothly and accurately inject the grease oil into the outer peripheral surface of the bolt at the start of bolt tightening as lubricating oil.

[0019]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the conventional bolt disengaging machine, that is, the bolt tightening torque is apt to vary, and it is difficult to improve the efficiency of the bolt unfastening operation. Low reliability such as accuracy,
It is a solution to problems such as troublesome recording and management of bolt tightening torque, utilization of records, etc., and difficulty in using highly viscous oil as lubricating oil. Rail fastening bolts with little variation in tightening torque, digitally automatically record and manage the bolt tightening torque, and use highly viscous oil such as grease oil as lubricating oil. It is not intended to provide a debate machine.

[0020]

According to the present invention, a main frame having traveling wheels, an engine hydraulic unit, a bolt disengaging unit, a lubricating oil pump unit, an operating handle, and upper and lower parts of a bolt disengaging portion are provided. A bolt tightening machine for a rail fastening bolt having a moving handle and a bolt breaking torque signal from a bolt breaking torque detecting device provided in the bolt breaking unit is input to the main frame; Digitize the bolt torque signal and convert it to PC
The basic structure of the present invention is that a controller unit having a PC card unit main body for recording on a card is mounted and a bolt breaking torque at the time of bolt breaking work is recorded and stored in a PC card.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a main frame, an engine hydraulic unit, a bolt disengaging unit, a lubricating oil pump unit, an operating handle, a handle for moving the bolt disengaging portion up and down, and The controller units are formed independently of each other, and the independent units are assembled to a main frame at the site of the bolt demolition work, thereby assembling and constructing the bolt delamination machine.

According to a third aspect of the present invention, in the first aspect, the lubricating oil pump unit is arranged in parallel with a lubricating oil pump having a hydraulic cylinder, a lubricating oil tank, and a bolt disengaging portion of a bolt disengaging unit. A lubricating oil supply pipe which is provided in a shape, and which is lowered via an operating rod when the bolt releasing portion is raised so that the lubricating oil nozzle fixed to the tip is opposed to the gap of the rail fixing leaf spring C. And lubricating oil is a non-drying high-viscosity lubricating oil.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a solenoid valve is provided in a hydraulic pressure supply path to a hydraulic motor constituting a bolt releasing portion of the bolt releasing device unit to loosen rail fastening bolts. In the initial stage, the solenoid valve is opened and closed at short intervals to apply a loosening impact power to the rail fastening bolt.

According to a fifth aspect of the present invention, in the first aspect of the present invention, an oil passage provided with a throttle valve in parallel with a hydraulic pressure supply passage to a hydraulic motor forming a bolt breaking portion of the bolt breaking device unit. The hydraulic oil supply passage can be switched to an oil passage with a throttle valve by operating a solenoid valve, and the hydraulic oil is supplied through the oil passage with the throttle valve at the initial stage of starting tightening of rail fastening bolts. Thus, the hydraulic motor is rotated at a low speed.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a bolt fastening device for a rail fastening bolt according to the present invention. FIG. 1 is a plan view of the bolt disengaging machine, FIG. 2 is a side view thereof, and FIG. 3 is a front view thereof. 1 to 3, 1 is a main frame, 2 is an engine hydraulic unit, 3 is a bolt disengaging unit, 4 is a lubricating oil pump unit, 5
Is an operation handle, 6 is an upper / lower handle for the bolt release unit, and 7 is a controller unit. The bolt disengaging machine according to the present invention is formed from the seven main constituent members shown in FIGS. 1 to 7 and carried into a line repairing site in a state where the members 1 to 7 are disassembled respectively. The bolt disengaging machine is assembled and assembled by assembling the members 1 to 7 in the above.

The main frame 1 is composed of a frame body 1a made of a rectangular tubular channel material and running wheels 1b and 1b provided at the front end and the rear end of the frame body 1a. The bogie 1 is run along the rail in a state where 1b is fitted to the tread surface of the rail to be bolted. The frame body 1a is appropriately provided with support pieces and mounting holes necessary for detachably fixing the support frames 2a and 7a such as the engine hydraulic unit 2 and the controller unit 7, which will be described later. Have been.

The engine hydraulic unit 2 includes a support frame 2
a, an engine 2b, a hydraulic unit 2c, and the like, and a central portion of a support frame 2a is fixed to a front portion of the frame main body 1a in a direction perpendicular thereto.
The engine 2b of the hydraulic unit 2 is composed of an air-cooled 4-cycle gasoline engine, and has a rated output of 6.
0/1800 (ps / rpm), maximum output 8.0 / 18
00 (ps / rpm), maximum torque 1.7 / 2500
(Kg-m / rpm) and a fuel tank of 6.0 l.

As shown in the hydraulic circuit diagram of FIG. 4, the hydraulic unit 2c comprises an oil tank 8, a hydraulic pump 9, and the like. The hydraulic pump 9 is driven to rotate by the engine 2b, and operates from the hydraulic pump 9. By supplying oil, the hydraulic motor 1 of the bolt disintegrator unit 3 described below is supplied.
7 moves upward (or downward) while being rotationally driven in a predetermined direction. In the hydraulic circuit diagram of FIG. 4, 10a is a P port relief, 10b is a B port relief, 11 and 12 are solenoid valves, 13 is a throttle valve, and 14 is A
・ B port block, 15 is a plate, 16a ・
16b is a manifold block, 17 is a hydraulic motor,
Reference numeral 18 denotes a hydraulic cylinder of the lubricating oil pump, and reference numeral 19 denotes a cooler. The two hydraulic motors 17, 17 are individually (or simultaneously) rotated in either forward or reverse directions by switching the solenoid valves 11, 12. You.

The hydraulic cylinders 18 constitute a cylinder of a lubricating oil pump 24 of the lubricating oil pump unit 4 described later, whereby high-viscosity lubricating oil O is supplied to the lubricating oil nozzle 26a. .

Since the engine hydraulic unit 2 itself is well known, including the hydraulic circuit diagram of FIG. 4, its detailed description is omitted here. Also, as the hydraulic pump 9,
Dual-type variable displacement piston pump (0 to 16 cc / re
v. 2 units), and the discharge amount is 0 to 28.
8 l / 1800 rpm, discharge pressure 250 kg / cm ²
It is.

As shown in FIGS. 1 to 3, the bolt disengaging unit 3 includes a support frame 21 and two hydraulic motors 17.1 mounted on the support frame 21 so as to be slidable upward and downward.
7, a socket 20 rotated by each of the hydraulic motors 17 and 17, a load cell type automatic torque detector 22h for detecting a rotational drive torque of each of the hydraulic motors 17 and 17,
It comprises an operation / display panel 22 for controlling the operation of the bolt disintegrator unit 3 and the like.

That is, the support frame 21 is attached to the main frame 1.
The frame is a substantially cubic frame detachably fixed to the rear end side, and hydraulic motors 17 are independently slid upward and downward on support plates 23 fixed to the frame 21. It is movably supported and fixed. The hydraulic motors 17
Below the socket 20 fits into the head of the bolt B.
20 are connected to each other, and the hydraulic motors 17
Accordingly, the sockets 20 are rotationally driven in the loosening direction or the tightening direction of the bolt B, respectively.

The two hydraulic motors 17, 17 are supported so as to be able to move up and down independently of each other. This is performed by the weight of the motors 17 and the like. Further, the lifting of the bolt tightening portion including the hydraulic motor 17 and the socket 20 and the like is performed by operating the handle 6 for moving up and down the bolt tightening portion as described later. Each hydraulic motor 17 and socket 20 on both sides via a lever mechanism
Are simultaneously lifted upward (dotted line position in FIG. 2), and conversely, by releasing the pushing down of the handle 6 and returning it to the home position (solid line position in FIG. 2), each hydraulic motor 17 and socket on both sides are released. 20 and the like individually move downward under their own weight.

In order to smoothly move the disintegrator unit 3 up and down, an auxiliary spring mechanism for pulling up, a damper device for preventing an impact at the time of descent, and an upward and downward movement amount are limited. Needless to say, a stopper mechanism or the like is provided on the support frame 21. Further, when the bolt B is tightened by the rotation of the socket 20 and the head of the bolt B rises upward, the hydraulic motor 9 and the bolt disengaging portion of the socket 20 also move to the right A 'portion in FIG. It will be lifted upward as shown in FIG.

As the hydraulic motors 17, a motor having a capacity of 125 cc / rev is used, the hydraulic oil tank capacity is 20 l, and the socket rotation speed is 28-2.
00 rpm. The hydraulic motor 1
Tightening torque when bolting 7.17 is 1300-1
It is set to 500 kg-cm, and the maximum torque at the time of tightening and loosening is selected to be 3400 kg-cm (the maximum generated torque of the hydraulic motor 17 is 3800 kg-cm).
cm). Furthermore, the bolt B has a capacity of about 1
000 bolts / Hr (rail extension: about 300 m), and the net time required for the work of unraveling the two bolts B on the left and right sides of the rail R is about 10 seconds.

As an automatic torque detecting device for detecting the rotational driving torque of the hydraulic motors 17, the maximum pressure of the hydraulic oil supplied to the hydraulic motor 17 is detected by a load cell, and the rotational driving torque is calculated from the detected pressure value. A so-called load cell type automatic torque detector 22h having such a configuration is used. Since the load cell type automatic torque detecting device 22h for detecting the rotational driving torque of the hydraulic motors 17 is a known device, its detailed description is omitted here.

The display / operation panel 22 sets the operating conditions of the bolt disintegrator unit 3 and controls both hydraulic motors 17.
・ Displays the generated torque (bolt tightening torque etc.) of 17 and the like. That is, FIG. 5 is a front view of the display / operation panel 22, and reference numerals 22a and 22b denote torque display panels,
2c is a unit selection switch, 22d is a bolt tightening
Loosening selection switch, 22e is lubricating oil control switch, 22e
f is a lubrication test switch, 22g and 22g 'are measurement abnormality display lamps, 22i is an illumination switch, and 22j is an alarm buzzer.

On the torque display panel, the generated torque of each of the hydraulic motors 17 is displayed. By operating the unit selection switch 22c, each setting of the operation of the double bolt disengaging unit 3, the operation of only one unit, the operation of only the other unit, and the stop of the operation of both units can be performed. Further, both the loosening and the tightening are automatically operated by the operation of the switch 22d (the automatic stop is performed when the torque is not loosened by 3500 kg-cm or more), only the tightening is performed, only the loosening is performed, and both the loosening and the tightening are performed. Are set.

When the switch 22e is depressed, a lubricating oil pump unit 4 described below operates, and a single amount of lubricating oil O is discharged from the lubricating oil nozzle 26a. The lamps 22g and 22h are connected to any of the hydraulic motors 17
Is turned on when the generated torque is abnormal, the abnormality of the generated torque is displayed, and the buzzer 22j sounds.

The lubricating oil pump unit 4 includes a lubricating oil pump 24, an oil tank 25, a lubricating oil supply pipe 26, a nozzle 26a, a lubricating oil hose (not shown), and the like, as shown in FIG. It is detachably fixed to an outer end of a support frame 7a of the controller unit 7 described later. The lubricating oil pump unit 4 includes the bolt disintegrating unit 3
A predetermined amount of high-viscosity lubricating oil O is sprayed onto the outer peripheral surface of the bolt B in a state where the head is lifted up by being loosened by the socket 20 of FIG. Is provided.

As the high-viscosity lubricating oil O, non-drying industrial grease (G-4) manufactured by Cosmo Oil Lubricant Co., Ltd. is used. Also, the lubricating oil pump 24
When the hydraulic motor 17 of the bolt disintegrator unit 3 is driven and the hydraulic cylinder 18 for driving the lubricating oil pump is operated, a certain amount of lubricating oil O is supplied by pressure.

FIG. 6 is an explanatory view showing an arrangement state of the lubricating oil nozzle 26a.
a is a nozzle and 27 is an operating rod of a supply pipe. The lubricating oil supply pipe 26 is vertically arranged on the side of the socket 20 in parallel with the socket 20 and is supported by the support frame 21 so as to be movable up and down. That is, the lubricating oil supply pipe 26 is supported on the supporting frame 21 via a lubricating oil pipe operating rod 27 pivotally supported so as to be freely movable up and down.
When the hydraulic motor 17 is lowered and the socket 20 is fitted to the head of the bolt B, the lubricating oil supply pipe 26 is pulled up by the operating rod 27 and the lubricating oil nozzle is 26a is located above the socket 20 (left side in FIG. 6).

On the other hand, when the bolt B is loosened and the bolt disengagement portion composed of the socket 20 and the hydraulic motor 17 is pushed up by the elevation of the head of the bolt B, the operating rod 2 is lifted.
7, the lubricating oil supply pipe 26 is pushed downward, and a high-viscosity lubricating oil O is ejected from the nozzle 26a through the gap of the rail fixing leaf spring C toward the outer surface of the bolt B for a predetermined amount (constant time). (See the right side of FIG. 6). It is needless to say that the amount of the lubricating oil O to be ejected (injection time) and the height position of the supply pipe 26 can be adjusted, but the description thereof is omitted here.

The operation handle 5 has its lower end detachably connected and fixed to the rear end of the main frame 1, and operates the handle 5 to manually move the bolt release machine forward and backward. The handle 5 is provided with a start button 5a for the bolt disintegrator and a mark button 5b for recording the operation start position of the disintegrator on a PC card. , The bolt disengaging operation is started, and by pressing the mark button 5b, a reference point such as the starting position of the disengaging operation is stored in an IC card (PC card) of the controller unit 7 described later. Be recorded.

Handle 6 for moving up and down the bolt release section
Is disposed on the right side of the operation handle 6 so as to be able to move up and down freely, and the tip thereof is detachably attached to the support frame 21 of the disintegrator unit 3 and is moved up and down. It is mounted swingably. The distal ends of the upper and lower moving handles 6 are engaged with the support frames of the two hydraulic motors 17, respectively, and by pushing down the base ends (handle side) of the upper and lower moving handles 6, Both hydraulic motors 17 are lifted upward by a predetermined size, and further, the base end (handle side) of the up / down movement handle 6 is lifted (returned to the original position).
As a result, the two hydraulic motors 17 are individually lowered by their own weight. It is needless to say that the distance range in which the two hydraulic motors 17 move up and down is appropriately restricted by stoppers and the like.

The controller unit 7 is formed of a support frame 7a and a controller main body 7b, and the controller main body 7b is placed at the center of the support frame 7a. Further, as shown in FIG. 1, the base end of the support frame 7a is
A traveling wheel 7c to be fitted to the other rail R is attached to an end of the support frame 7a at the front end side, and the traveling wheel 7c and the main frame 1 The front and rear traveling wheels 1b, 1b allow the bolt disengaging machine A to travel stably on the rails R on both sides.

The controller main body 7b is formed in a waterproof box as shown in FIG. 7, in which a PC card unit main body 28 is stored. In FIG. 7, reference numeral 28a denotes a power switch, 28b denotes a PC writing key switch, 28c denotes a PC writing switch, 28d denotes a clear switch, and 28e denotes a cover. The PC card unit main body 28 is a PC card (Personal Computer) which is a kind of so-called IC card.
er Memory Card), an interlock signal from a programmable controller 22k provided in the display / operation panel 22 of the bolt disintegrator unit 3, a rotation torque of the hydraulic motor 17 from a load cell type automatic torque detector 22h, and the like. Is converted into a digital signal and recorded, and is stored inside the controller main body 7b.

That is, a front cover, a lead display section, a PC card slot, a CPU bus interface connector and the like are provided on the front side of the PC card unit main body 28, and a serial communication connector system switch and the like are provided inside the front cover. Is provided.

The rotation torque signal of the hydraulic motor 17 detected by the load sensor type automatic torque detection device 22h in the display / operation panel 22, the start signal and the mark signal from the programmable controller 22k, etc. The lock signal is input to the PC card unit main body 28, where it is recorded as a digitized signal on the PC card inserted into the PC card slot. Since the PC card unit main body 28 is a known one, detailed description thereof is omitted here.

Specifically, information such as the number, loosening torque, tightening torque, work start position mark, etc. of each rail fastening bolt B that has been disentangled is written and recorded on the PC card, and the length of the predetermined rail is determined. When the reconciliation work is completed, the PC card is taken out and stored as a record.

The storage capacity of the PC card is about 6 volts.
By inputting a PC card, which is about 000 pieces (rail length about 1500 m) and records data such as bolt tightening torque, to a personal computer, necessary data are read, organized, managed, and the like.

Next, repair of a line using the bolt disentangler according to the present invention will be described. First, the main frame 1, the engine hydraulic unit 2, the bolt disengaging unit 3, the lubricating oil pump unit 4, the operation handle 5, the handle 6 for moving the bolt disengaging unit up and down, the controller unit 7, etc. are sent to the disengaging work site. Carry in and assemble it here to assemble the bolt disassembling machine.

Next, while the engine hydraulic unit 2 and the lubricating oil pump unit 4 are activated, the switches and the like such as the display / operation panel 22 of the bolt disintegrator unit 3 and the controller body 7b of the controller unit 7 are operated. Each is set to a predetermined position / range.

After that, the main frame 1 is moved by operating the operation handle 5 so that the sockets 20 are located directly above the first bolts B to be tightened. Next, the hydraulic motor 17 and the socket 20 are lowered by operating the up / down movement handle 6, and the socket 20 is fitted to the head of the bolt B. Thereafter, the user presses the mark button 5b to record the work start reference position (designation of the first bolt B), and presses the start button 5a to press the first bolt B.
Start bolting work.

FIG. 8 is a flowchart of the bolt releasing operation. When the start button 5a is pressed, the debinder unit 3 is operated, and the hydraulic motor 17 is rotated in the bolt loosening direction. That is, when loosening the bolt, first, the solenoid valve 11b shown in FIG. 4 is turned on and off at 0.5 second intervals, and the oil flowing to the hydraulic motor 17 is intermittently interrupted to apply a shock to the bolt B. This makes it easier to loosen the bolt B.
After that, loosen at high speed (solenoid valve 11b-1)
2b On). Hydraulic motor 17 just before the bolts come off
Stop the rotation of (limit switch / relaxation time about 4.5 seconds).

When the loosening of the bolt B is completed, the bolt is automatically tightened and lubricating oil is injected. That is, the hydraulic motor 17 and the socket 20 are raised by loosening the bolt B, the lubricating oil pipe 26 and the lubricating oil nozzle 26a are lowered to predetermined positions via the operating rod 27, and the cylinder 18 of the lubricating oil pump 24 is operated. The high-viscosity lubricating oil O is jetted from the nozzle 26a into the gap between the rail fixing leaf springs C,
It adheres to the outer surface of the bolt B.

When the bolt is tightened, the solenoid valve 11a shown in FIG. As a result, the hydraulic motor starts with slow rotation (0.7 to 1.5 seconds).
Thereafter, the oil is supplied to the hydraulic motor 17 without passing through the throttle valve 9, and the bolt B is tightened under high-speed rotation (the solenoid valve 11b is on, for 3 to 5 seconds). At the end of the tightening, if the SOL 1b / 2a is tightened with the Off bolt B in a predetermined torque range (1300-1500 kg-cm), the solenoid valves 11b / 12a are turned off.
, And the rotation of the hydraulic motor 17 is stopped. Thus, the first bolt (one or two) B is completely disengaged, the bolt disengaging machine A is moved to a position above the second bolt B, and the next bolt disengaging operation is performed. Done.

The bolt tightening torque is 1300 to 15
When it is out of the range of 00 kg-cm, an alarm on the display / operation panel sounds. Also, the maximum tightening torque is 3400k
If it exceeds g-cm, the operation of the hydraulic pump 9 is automatically stopped. When the bolt tightening torque is 1300 kg-cm or less, re-loosening and re-tightening are performed. However, when the tightening torque is continuously below the specified value, the screw of the bolt B may be damaged. , The bolt B is replaced.

The tightening torque of the bolt B is detected by the load cell type automatic torque detector 22h, and the detected electric signal is digitized by the controller unit 7 and recorded on the PC card. The PC card on which the data such as the bolt tightening torque is recorded is removed from the bolt distorting machine A, and the data is arranged, classified, managed, printed, etc. through a separately provided personal computer or the like.

[0060]

In the present invention, the bolt disengaging device is mounted on the main frame 1, the engine hydraulic unit 2, the bolt disengaging unit 3, the lubricating oil pump unit 4, the operating handle 5, and the bolt disengaging portion. Lowering handle 6 and controller unit 7
By assembling these units at the site of the bolt disengaging operation, the bolt disengaging machine A is assembled and formed. As a result, it is extremely easy to carry the bolt disintegrator A to the site, and the time required for work preparation can be greatly reduced.

In the present invention, two sets of the hydraulic motor 17, the socket 20, and the lubricating oil nozzle 26a are provided in the bolt disengaging unit 3 so that they can be operated independently or simultaneously. As a result, the fastening bolts B on both sides of the rail R can be disengaged with high efficiency, and the work efficiency can be greatly improved.

Further, according to the present invention, when the bolt B is loosened, a shock in the loosening direction is first applied to the bolt B, and at the time of tightening, the bolt B is first tightened at a low speed, and then tightened at a high speed. As a result, even if the fastening bolt B is fixed, it can be relatively easily loosened, and the lubricating oil O is injected at the time of low-speed tightening. The amount can be reduced.

In addition, since the piston-cylinder type lubricating oil pump 24 is used in the present invention, even when a non-drying high-viscosity lubricating oil is used as the lubricating oil O, it can be loosened smoothly. The bolt B can be injected and applied to the outer surface of the bolt B, thereby making it possible to extend the pitch interval of the regular bolt loosening operation.

In the present invention, the controller unit 7 is provided in the bolt disengaging unit A to digitize a detection signal such as a bolt tightening torque detected by the bolt disengaging unit 3 and to convert these data signals into a PC. It is configured to record on a card. As a result, the management and arrangement of data such as bolt tightening torque in the bolt disengaging operation can be performed extremely accurately and easily, and the number of personnel required for recording and the like can be reduced. Reduction is possible. As described above, the present invention has excellent practical utility.

[Brief description of the drawings]

FIG. 1 is a plan view of a track repair bolt debinder according to the present invention.

FIG. 2 is a side view of a track repair bolt disengaging machine.

FIG. 3 is a front view of a track repair bolt debinder.

FIG. 4 is a hydraulic circuit diagram including an engine hydraulic unit and the like.

FIG. 5 is a front view of a display / operation panel of the bolt disintegration unit.

FIG. 6 is a front view showing a mounting state of a lubricating oil nozzle.

FIG. 7 is a front view of a controller main body.

FIG. 8 is a flowchart of bolt disengagement work.

FIG. 9 is a side view showing an example of a conventional bolt disengaging machine.

FIG. 10 is a plan view showing an example of a conventional bolt disengaging machine.

[Explanation of symbols]

A is a bolt cutter, R is a rail, B is a rail fastening bolt, O is a high-viscosity lubricating oil, C is a rail fixing leaf spring, 1 is a main frame, 1a is a frame body, 1b is running wheels, 2
Is an engine hydraulic unit, 2a is a support frame, 2b is an engine, 2c is a hydraulic unit, 3 is a bolt disengaging unit, 4 is a lubricating oil pump unit, 5 is an operation handle, 5
a is a start button, 5b is a button for marking, 6 is a handle for moving the bolt up and down, 7 is a controller unit,
7a is a support frame, 7b is a controller main body, 7c is running wheels,
8 is an oil tank, 9 is a hydraulic pump, 10a and 10b are port reliefs, 11 and 12 are solenoid valves, 13
Is a throttle valve, 14 is an A / B port block, 1
Reference numeral 5 denotes a plate, 16a and 16b are manifold blocks, 17 is a hydraulic motor, 18 is a hydraulic cylinder of a lubricating oil pump, 19 is a cooler, 20 and 20 are sockets, 2
1 is a support frame, 22 is a display / operation panel, 22a is a torque display panel (left), 22b is a torque display panel (right), 2
2c is a unit selection switch, 22d is a tightening / loosening selection switch, 22e is a lubrication oil control switch, 22f is a lubrication oil test switch, 22g is a measurement abnormality display lamp (left), 22g 'is a measurement abnormality display lamp (right), 22i
Is an illumination switch, 22j is an alarm buzzer, 22k is a programmable controller, 22h is a load cell type automatic torque detector, 23 and 23 are support plates, 24 is a lubricating oil pump, 25 is an oil tank, 26 is a lubricating oil supply pipe, 26a
Is a lubricating oil nozzle, 27 is a lubricating oil supply pipe operating rod, 28
Is a PC card unit main body, 28a is a power switch, 2
8b is a PC writing key switch, 28c is a PC writing switch, 28d is a clear switch, and 28e is a cover.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Eiji Kono 1-1-1-14 Oyodokita, Kita-ku, Osaka-shi, Osaka F-term in Nakamichi Brothers Co., Ltd. 2D057 BA29

Claims (5)

[Claims] 1. A rail fastening bolt provided with a main frame having traveling wheels, an engine hydraulic unit, a bolt disengaging unit, a lubricating oil pump unit, an operating handle, and a handle for moving the bolt up and down. In the bolt distorting machine, a bolt distorting torque signal from a bolt distorting torque detection device provided in the bolt disengaging unit is input to the main frame, and the bolt distorting torque signal is digitized. A controller unit having a PC card unit main body for recording on a PC card, and recording and storing a bolt disengagement torque at the time of bolt disengagement work on the PC card. Disintegrator. 2. A main frame, an engine hydraulic unit, a bolt disengaging unit, a lubricating oil pump unit, an operating handle, a handle for moving up and down a bolt disengaging portion, and a controller unit are formed independently of each other. The bolt disengaging device for rail fastening bolts according to claim 1, wherein the bolt disengaging device is assembled by assembling each of the units to a main frame at a bolt disengaging work site. 3. A lubricating oil pump unit is provided in parallel with a lubricating oil pump having a hydraulic cylinder, a lubricating oil tank, and a bolt disengaging portion of a bolt disengaging unit, and operates when the bolt releasing portion is raised. By being lowered via the rod,
A lubricating oil nozzle fixed to the tip is formed from a lubricating oil supply pipe that faces the gap of the rail fixing leaf spring C, and the lubricating oil is a non-drying high-viscosity lubricating oil. A bolt disengaging device for a rail fastening bolt according to claim 1. 4. A solenoid valve is provided in a hydraulic pressure supply path to a hydraulic motor constituting a bolt tensioner of a bolt tensioner unit, and the solenoid valve is opened and closed at short intervals at an initial stage when a rail fastening bolt is loosened. 2. A bolt disengaging device for rail fastening bolts according to claim 1, wherein a shock absorbing power in a loosening direction is applied to the rail fastening bolts. 5. An oil passage having a throttle valve is provided in parallel with a hydraulic supply passage for a hydraulic motor forming a bolt disengaging portion of the bolt disengaging unit, and a hydraulic oil supply passage is provided by actuation of a solenoid valve. Can be switched to an oil path equipped with a throttle valve, and at the beginning of tightening of rail fastening bolts, hydraulic oil is supplied through the oil path equipped with the throttle valve to rotate the hydraulic motor at a low speed. Item 2. A bolt disengaging device for a rail fastening bolt according to Item 1.