JPS58206466A - Steering clutch brake apparatus for tracked vehicle - Google Patents

Abstract

PURPOSE:To facilitate assembly and disassembly by installing a clutch onto a flange arranged between a clutch housing and a a brake housing so that a disc is arranged on the flange side and by allowing a connecting shaft onto which a brake is installed to be supported rotatably. CONSTITUTION:A flange 4 is arranged between a clutch housing 2a and a brake housing 3a, and the above three are connected with a fixing tool 5. A hollow connecting shaft 7 is supported, through a bearing 6, onto a hollow shaft 4a projected in the center part of the flange 4. A clutch assembly body 2 having no clutch outer drum 2c is installed, in free mounting and demounting, onto one edge of the hollow connecting shaft 7, with a disc 2d and a plate 2f positioned on the flange 4 side. A brake assembly body 3 is installed, in free mounting and demounting, on the other edge of the hollow connecting shaft 7. Further, an output shaft 10 spline-engaged with the inner peripheral part of the shaft 7 is accommodated into the hollow connecting shaft 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steering clutch/brake device for a tracked vehicle that facilitates disassembly and assembly.

As a conventional steering clutch/brake device for a tracked vehicle, one disclosed in, for example, Japanese Unexamined Patent Publication No. 53-5363 is well known. This product has a structure in which a first housing containing a clutch assembly, a second housing containing a brake assembly, and a third housing containing a final drive assembly are connected by bolts, etc. The clutch housing as well as the clutch assembly had to be removed from the car body, resulting in a problem that required a lot of time and effort to repair.

This invention was made for the purpose of improving the problems encountered in this invention, and is a tracked vehicle in which the clutch assembly, brake assembly, etc., along with the 7 lunge can be removed while the clutch housing, which has a low failure frequency, remains on the vehicle body. An object of the present invention is to provide a steering clutch/brake device that facilitates disassembly and assembly.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the power system of a tracked vehicle, in which the output of the engine α is transmitted to the horizontal axis d via a transmission and a bevel gear C. On the horizontal axis d, the main bodies 1 of a steering clutch brake device, which will be described later, are installed independently on the left and right sides, and these main bodies 1
The transmitted power is transmitted to the sprocket f via the final reduction gear e, and a crawler track (not shown), which is dependent on the sprocket f, is rotated and the vehicle travels. The main body also has a clutch housing 2α having a one-piece split structure (which may be integrated) and a brake housing 3a having an integrated structure,
A seven flange 4 is interposed between these housings 2α, 3α, and the three are connected by a fixing member 5. 7. Each housing 2α is divided by a lunge 4.

3α, a clutch assembly 2 is housed in a clutch housing 2α, and a brake assembly 3 is housed in a brake housing 3α. The clutch assembly 2 includes a clutch outer drum 2 integrated with an input shaft 2b.
A plurality of disks 2d are spline-engaged on the inner circumferential surface of the clutch outer drum 2C, and the inner circumferences are spline-engaged with the clutch inner drum 2e between these disks 2d. A plurality of plates 2f are interposed. Above clutch inner drum 2
e is a fixing tool 8 attached to one end of a hollow connecting shaft 7 supported via a bearing 6 on a hollow shaft 4α protruding from the center of the 7 flange 4.
It is fixed by. In addition, in the latch inner dome 2g described above, there is a clutch hydraulic oil passage 4b formed in the seven flange 4, a clutch hydraulic oil passage 7α formed in the hollow connecting shaft 7, and a clutch hydraulic oil passage 7α formed in the clutch inner drum 2e. A clutch push plate 2t is slidably provided and is actuated by hydraulic oil introduced into the pressure chamber 2 through the formed clutch hydraulic oil flow path 2g. The clutch push plate 2t has a clutch spring 2m interposed between the push plate 2t and the spring presser 2 door.
The disk 2d and plate 2f@ are biased to press them together, and the power input from the human power shaft 2b is transmitted to the clutch inner drum 2g via the clutch outer drum 2C1 plate 2f and disk 2d. At the same time, the hydraulic oil supplied to the pressure chamber 2k causes the clutch spring 2rrL to move backward, thereby releasing the pressure contact between the plate 2f and the disk 2d.

Note that 20 is a clutch cooling oil reservoir formed in the clutch inner drum 2g, and communicates with the clutch cooling oil passage 4c formed in the hollow shaft 4α of the 7-lunge 4. Oil flows from oil hole 2P to plate 2F.
and flows between the disks 2d to cool them. Further, the inner diameter of the spline of the clutch outer drum 2c and the outer diameter of the spring retainer 21'IL are dimensioned so as to provide a clearance fit. On the other hand, the brake assembly 3 housed in the brake housing 3α has a brake inner drum 3b fixed to the other end side of the hollow connecting shaft 7 by a fixing member 8, and the outer circumference of the brake inner drum 3b A plurality of discs 3c are spline engaged with each other. Interposed between these discs 3c is a plate 3g whose outer periphery is spline-engaged with the brake outer drum 3d. Further, the brake outer drum 3d is fixed to the seven flange 4 by a fixing member 9, and a brake pusher is provided in the brake outer drum 3Li, which is biased toward the disc 3c and plate 3e by a brake spring 3f and presses them together. Three plates are accommodated. The brake pressing plate 3g is supported by a cylinder member 3h supported by a hollow shaft 4α of the flange 4, and the brake hydraulic oil introduced into the pressure chamber 3L of the cylinder member 3h via the brake hydraulic oil flow path 4d causes the brake spring 3f It is configured to be reversed through the brake and release the brake, and
An output shaft 10 is housed in the hollow connecting shaft 7 and is spline-engaged with the inner circumference of the shaft 7, and the power input from the input shaft 2b is extracted from the output shaft 1o. There is.

In addition, 3 in the figure is a brake cooling oil reservoir formed in the brake inner drum 3b, which communicates with the brake cooling oil flow path 4e formed in the hollow shaft 4α of the 7-lunge 4.
The cooling oil that has reached the oil reservoir 3k flows between the disk 3C and the plate 3e through the oil hole 3t and cools them. Further, the bearing 4f in the figure is a lubricating oil flow path, and the oil supplied to this flow path 4f flows as indicated by an arrow α to lubricate each bearing.

Therefore, to drive the vehicle straight, turn the left and right clutches ``on'' and the brakes ``off,'' and to stop the vehicle, turn the left and right clutches ``off'' and the brakes ``on,'' and to turn left, turn the left clutch ``off'' and the brake ``on''. The right clutch is "on", the brake is "off", and turning to the right is done with the left clutch "on", the brake "off", the right clutch "off", and the brake "on" as before, so the explanation is as follows. The detailed description of assembly and disassembly will be omitted. When disassembling the steering clutch brake device assembled in the state shown in FIG. clutch housing 2α
Remove flange 4 and pre-kino 1 housing 3α.

When the 7 langes 4 and the brake housing 3α are pulled out in this state, the insides of the brake assembly 3 and the clutch assembly 2 are 7 lunge 4
It can be removed in its entirety. Next, in this state, if you loosen the fixing bolt 8, the brake assembly 3 will be attached to the flange 4 side.
The brake inner drum 3b can be removed as shown in FIG. 4, leaving the disc 3C and plate 3g, the brake push plate 3g and brake spring 3f that press them together, remaining. At the same time, from the flange 4, the hollow connecting shaft 7
By pulling out the hollow connecting shaft 7, the clutch inner drum 2C, disk 2d, plate 2f, spring retainer 2m, etc. of the clutch assembly 2 can be removed as well.

The above is the disassembly procedure, but the maintenance and assembly procedure can be performed in the reverse order of the above disassembly.The procedure will be explained next.
Attach the brake assembly 3 removed from the flange 4 to the 7 flange 4 with the fixing tool 9. Also, attach the clutch assembly 2 to the hollow connecting shaft 7.
Attach the parts except the clutch outer drum 2C. Next, attach one end of the hollow connecting shaft 7 to which the clutch assembly 2 is attached.
It is inserted into the central through hole of the lunge 4, and the brake inner drum 3h of the brake assembly 3 is fixed to the tip thereof with a fixing member 8, thereby integrating the clutch assembly 2 and the brake assembly 3. Next, the brake housing 3cL is fixed to the outer flj1 surface of the flange 4 with the fixing device 5 and assembled into the state shown in FIG. 3, and then the spring retainer 271! Insert the clutch assembly 2 into the clutch outer drum 2C from the side, and push the clutch assembly 2 into the clutch outer drum 2C using the outer periphery of the spring presser 2rIL as a guide. When the clutch assembly 2 is housed in the predetermined position, screw the locking device 5 into the flange 4 and attach it to the 7 langes 4.
is fixed to the end face of the clutch housing 2α, and then the output shaft 10 is inserted into the hollow connecting shaft 7 to complete the assembly.

As described in detail above, the present invention includes a seven flange interposed between a clutch housing housing a clutch assembly and a brake housing housing a brake assembly.
The hollow connecting shaft is rotatably supported in the center of the lunge, and the clutch inner drum of the clutch assembly is attached to one end of the hollow connecting shaft, and the brake inner drum of the brake assembly is attached to the other end. The clutch assembly and brake assembly can be removed from the vehicle body along with the 7-lunge by simply removing the fixings that connect the clutch housing, brake housing, and 7-lunge, making it easy to disassemble and reassemble the clutch, brake, and rake assemblies. As a result, inspection, maintenance, and repairs can be carried out more efficiently. Also, someone said that if an oil reservoir is provided in each inner drum of the clutch assembly and brake assembly, and the oil reservoir supplies oil between each disc and plate for cooling, the cooling effect will be improved. If the outer diameter of the spring retainer of the assembly is set in a tight fit relationship with the spline inner diameter of the clutch outer drum, when assembling the clutch assembly and brake assembly to the vehicle body, the inner circumference of the spline will be Since it serves as a guide when inserting the presser foot, assembly work can be easily done in a short time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic diagram of the Howaline, FIG. 2 is a sectional view of the steering clutch brake in an assembled state, and FIGS. 3 and 4 are explanations of the operation during disassembly and assembly. It is a diagram. 2-piece clutch assembly, 2α is clutch housing, 2b
Input shaft, 2C clutch outer drum, 3 brake assembly, 3α brake housing, 4 7 lunge, 7
Hollow connection shaft, 10 output shaft. Representative of Komatsu Manufacturing Co., Ltd. Patent attorney Masaaki Yonema Patent attorney Tadashi Hamamoto @ Figure 1 procedural amendment (voluntary) December 16, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi Patent application for indication of case 1 Showa 57-086418 No. 2
, Name of the invention Steering clutch brake IT for tracked vehicles Relationship with the case of the person making the amendment Patent applicant address 2-3-6 Akasaka, Minato-ku, Tokyo Name (123)
) Ryo Kawai, Representative of Komatsu Ltd. - 5. Voluntary amendment of the date of the amendment order, 1. Specification subject to solo amendment and drawing l. 2m is corrected to 1 clutch spring 2n. (2) "Plate 2f and disk 2d" on page 4, line 2 of the specification is corrected to "disc 2d and plate 2fJ." (3) Correct "clutch spring 2 m" in the 5th line of the specification to "clutch spring 2 m". (4) ['Brake press plate 3!' on page 6, lines 9 and 10 of the specification] i accommodated” is corrected to “brake push plate 3!l accommodated”. (5) The 7th line from the bottom of page 6 of the specification is corrected to read ``J resists the U brake spring 3f via the brake spring 3f''. (6) Figures 3 and 4 of the drawings attached to the application are amended as attached.

Claims (1)

[Claims] Provided on the vehicle body side: A 7 flange 4 is removably provided in the opening of the flex latch housing 2G, and in the center of the 7 lange 4 is a rotatable connecting shaft 7 that is spline-engaged with the output shaft 10. and removably installed, and the hollow l! 1! Input shaft 2b III
The clutch assembly 2 excluding the clutch outer drum 2C provided with the clutch assembly 2 is attached to the disc 2d of the clutch assembly 2.
and the plate 2f@ is removably attached to be located on the flange 4 side, and the brake assembly 11 is detachably attached to the opposite end of the onboard hollow cushion shaft 7, and (
The brake assembly 3 is placed on the above-mentioned 7-lunge 4 with the brake lever 3a attached to the attachment/detachment point (a steering clutch/brake device for a tracked vehicle).