Device for removing parts like shaft-bush

 

(57) Abstract:

Usage: when repairing vehicles. The inventive vyrisovyvaet shaft in the hollow shaft 1 cylinder vyrezavanim screw 8, which is located in the center of the bar 7. The shaft 1, the shaft, the screw 8 are located on the same axis, the inner diameter of the rod 1 is larger than the diameter of the shaft, and the diameter of the screw 8 is not larger than the diameter of the shaft. Supressive is made for several cycles. 2 C.p. f-crystals, 1 Il.

The invention relates to mechanical work, and in particular to devices used in the repair of vehicles for removing parts like shaft-Bush, mainly of pivot swivel pins ZIL, KAMAZ.

Usually for removing parts like shaft sleeve, including pins, use hammers and sledge hammers, which leads to deformation and destruction details.

Known hydraulic puller consisting of a hydraulic cylinder, the reference beam, power racks (Semenov C. M. non-standard tool for folding and Assembly works. M Agropromizdat, 1985, S. 288, 236, Fig. 191 b).

The disadvantage of this hydraulic puller is the use of the long-stroke cylinder (pump large obja it difficult to install on the front beam, especially when ipressive down pins with conical surface. When installing the cylinder above the pins due to the large size creates a significant tipping point that leads to imbalance, i.e. the emergence of a bully and deformation node, and failure of the device removing.

Also known puller containing cylinder, a piston with a hollow shaft (ed.St. USSR N 795932, class 25 In 27/02, 1981).

This puller is not suitable for repressive of pins, as the pins are not protruding from raspasovyvalis host part, the capture of which is produced in the known device when ipressive, which provides eccentric rollers.

It is also known a device for removing and fitting of smooth shafts containing cylinder, a piston which is connected with a hollow shaft (ed.St. USSR N 1180222, CL 23 P 19/02, 1985).

However, in this device the pin is not protruding part and cannot be press despite the more complex seizures and pushers.

Closest to the present invention is a device for disassembly of parts like shaft sleeve comprising a cylinder, consisting of a liner, piston, piston rod, the lower and upper lids, as well as thrust, traverse vlahuta the presence of two parallel cylinders, the rods which are connected by an additional transverse beam, the timing of operation of the hydraulic cylinders to avoid distortion, and also sets the rods with the possibility of angular rotation about the axis of removing, as in the device in the process of removing broken alignment. In the prototype supressive done in one stroke and at high initial loads due to length greater than the length of the bolt, and run wypracowania tool is curved misalignment, loss of rigidity and bending tool, which makes it unreliable puller.

The objective of the invention is to provide a portable compact reliable device for removing parts like shaft-Bush, mainly puller worn pins, including stuck, without removing the front axle from the vehicle. The technical result is a stepwise process of removing the bolt through the hollow stem vyrezavanim tool. In this case the axis of the extractor and bolt are the same, and a stripper in General has greater reliability at lower dimensions.

This is achieved by the fact that the proposed device for removing parts like shaft sleeve (hydraulic puller) consists of hydration the STS, the piston rod of the hydraulic cylinder are hollow, is located along the axis of the king pin and the inner diameter of the rod is larger than the diameter of the bolt. The ends of the rods are mounted in the top cover of the cylinder, and the other two ends passed through the yoke in the Central hole of which is screwed vypressovyvaetsya tool, made in the form of a screw, the diameter of which is not larger than the diameter of the king pin. Rod, pin and bushing arranged in series on the same axis. In traverse can be located in the sleeve, so that the screw is screwed into the sleeve. The ends of the king pin can be installed adapters for centering vypressovyvaetsya of the king pin relative to the hole in the rod, for example a washer or disk with pins included into the holes of the safety cover of the fist (cover removed before removing).

A causal relationship between the set of essential features and the technical result is to speed the process of removing, moving the pin (shaft) hollow shaft, screw direct and establishing coaxial with the king pin. Thanks to this constructive execution at the time of moving the pivot departure of minor screw that secures the rigidity of the tool. With the introduction of the bushing in the yoke increases dolgovecnoe, it allows you to quickly switch to a different size viprashivauschego tool, i.e. to universalservice puller. The adapters also increase the reliability of a stripper.

The drawing shows a device for removing parts like shaft sleeve, longitudinal section.

The device includes a hydraulic cylinder single-acting two-way hollow shaft 1, a sleeve 2, a piston 3, the bottom cover 4 and the top cover 5. The two ends of the parallel rods 6 are mounted in the top cover 5 of the hydraulic cylinder, and the other two end passed through the yoke 7 and fixed by nuts. Through the Central opening of the head plate 7 is screwed in, the screw 8, the diameter of which is not larger than the diameter of the bolt 9. The hollow shaft 1 has a diameter larger than the diameter of the bolt 9. In traverse can be located in the sleeve 10, so that the screw 8 screwed into the sleeve 10. The ends of the pin 9 can be installed adapters, such as a disk 11, the pins which align with the holes of the safety cover, but before vipresume, and the washer 12.

The device operates as follows.

Before vipresume with the front axle of the car, removed the wheel from the hub and thedistance platter. In the initial position the yoke 7 by screws 8 removed from the ate to the bolt 9. Yoke 7 with the screw 8 is put on draught 6, is fixed by nuts. The screw 8 is brought to a stop at the end of the bolt 9, so that the rod 1 is limited in the case raspasovyvalis site. The working fluid (oil) is supplied into the working cavity of the hydraulic cylinder is known through the fitting. Moves the sleeve 2 cylinder with lids 4 and 5 and the head plate 7 by screws 8 relative to the housing raspasovyvalis site, with vypressovyvaetsya tool screw 8 pushes the pin 9 on the axis and vyrisovyvaet part in the cavity of the rod 1. After the end of the translational motion of the piston 3 spend it return to its original position by the screw 8 (for example, by means of a crank). The process of extrusion of the king pin into the cavity of the stem is repeated several times until the complete removing. To unseat a jammed the bolt valid one-time shock on the screw 8, with a shift sleeve 10 relative to the beam 7, which retains the screw thread.

The puller is designed for use in engineering, namely for disassembly nodes vehicles, primarily for removing the pins swivel pins ZIL, KAMAZ.

The invention can be implemented using the described or known creditgasoline.

Thus, the invention meets the requirement of "industrial applicability".

1. DEVICE FOR REMOVING PARTS like SHAFT SLEEVE containing a cylinder, made in the form of a sleeve with upper and lower covers, piston and rod, two parallel thrust, traverse vypressovyvaniem tool, characterized in that the piston rod of the hydraulic cylinder is made hollow and is mounted along the axis vypressovyvaetsya shaft, yoke has a Central hole, thrust one of its ends fixed to the top cover of the cylinder, and the other two end passed through the yoke, wypracowanie the tool is made in the form of a screw and is mounted in the Central hole of the bar, the inner diameter of the rod is larger than a diameter of vypressovyvaetsya shaft, while the diameter of wypracowania tool is not larger than the diameter vypressovyvaetsya shaft.

2. The device under item 1, characterized in that the Central hole beam mounted sleeve threaded screw wypracowania tool.

3. The device according to PP.1 and 2, characterized in that the ends vypressovyvaetsya shaft mounted centering adapters.

 

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