CN202985473U

CN202985473U - Sleeve type expander

Info

Publication number: CN202985473U
Application number: CN 201220642913
Authority: CN
Inventors: 韩志利; 何金聚; 张振宇; 王贤伟
Original assignee: CSR Luoyang Locomotive Co Ltd
Current assignee: CRRC Luoyang Locomotive Co Ltd
Priority date: 2012-11-29
Filing date: 2012-11-29
Publication date: 2013-06-12
Anticipated expiration: 2022-11-29

Abstract

The utility model belongs to the technical field of diesel locomotive overhaul and provides a sleeve type expander. The telescope-feed expander comprises expanding claws (1), a connecting rod (12), a sleeved cylinder (2), a reset spring (3), a piston (4), a back cover (5), an impelling bolt (6) and a handle (7). The handle (7) is sleeved on the back cover (5). The back portion of the sleeved cylinder (2) is located in a groove of the back cover (5) and connected with the handle (7) and the back cover (5). The connecting rod (12) which is located in the sleeved cylinder (2) is connected between the expanding claws (1) and the piston (4). The piston (4) is located in the sleeved cylinder (2). The reset spring (3) is sleeved on the piston (4). Four expanding claws (1) are installed along the periphery and fixed at the front end of the sleeved cylinder (2). According to the sleeve type expander, under the conditions that a connector needle withdrawing plug-socket line can be prevented on the whole from being replaced and the whole line is easy to harm, a dustproof cover can be achieved to be installed rapidly. The sleeve type expander has the advantages of being simple in structure and low in cost.

Description

Telescopic expander

Technical field

The utility model belongs to the repairing I. C. locomotive technical field, mainly proposes a kind of telescopic expander.

Background technology

In interior electric locomotive, line connector is the important attaching parts that connect each major-minor control circuit of locomotive; formed by plug, socket and dust cover; wherein dust cover is the corrosion and the destruction that are not subjected to the external world of protecting plug, socket internal wiring; it has many types: circle; square; polygon, the circles that adopt in interior electric locomotive more.Such line connector dust cover is quality of rubber materials, belongs to consumable accessory, has a large amount of damaged, aging, crack performances in locomotive operation.

Because dust cover belongs to the line connector annex, manufacturer can't provide this accessory, even this accessory is arranged, must the withdraw of the needle disassemble whole circuits in plug, socket when changing dust cover, and workload is very big, makes troubles for maintenance side.

From the interior electric locomotive statistics that company overhauled in the past, the normal dust cover of changing mostly is greatly the dust cover of 20 cores, 10 coring circuit connectors, so the special dust cover of having manufactured experimently 20 cores, 10 coring circuit connectors.This dust cover material has that elasticity is large, soft, the aging-resistant characteristics, and common repair method is removed the low line impairment that very easily causes of efficient, in order to study the method that the direct installation of line connector is disassembled in the withdraw of the needle that need not, so make dust cover, special tooling---telescopic expander is installed.

The utility model content

The purpose of this utility model is to propose a kind of telescopic expander, the installation of dust cover when being used for interior electric locomotive line connector maintenance, Fast Installation replacing dust cover can be guaranteed, and the line impairment that causes when line connector overhauls can also be eliminated.

The utility model adopts following technical scheme for completing above-mentioned purpose:

A kind of telescopic expander, described telescopic expander includes expansion pawl, connecting rod, sleeve, back-moving spring, piston, bonnet, push bolt and handle; Described handle is nested with on bonnet; Described bonnet is the groove structure that front end has to place sleeve, and the rear portion of described bonnet has the through hole that passes in order to push bolt, and the above groove of the rear described through hole of postoperculum and bonnet is communicated with; The rear portion of described sleeve is positioned at the groove of bonnet, and is connected with handle, bonnet by screw; The both sides up and down of described barrel forward end have respectively hanger; Described connecting rod is positioned at sleeve, and described connecting rod is connected between expansion pawl and piston; The center of described sleeve front portion has the groove for positioning piston; Described piston is positioned at sleeve, and has the screwed hole that coordinates in order to push bolt on the rear end face of described piston; Described back-moving spring is nested with on described piston; Described push bolt is passed the above through hole, groove of bonnet and is connected with piston thread; Described expansion pawl is four, and four described expansion pawls are along the circumference setting, and is fixed on the front end of sleeve.

A kind of telescopic expander that the utility model proposes, the installation of dust cover when being used for interior electric locomotive line connector maintenance, disassemble under the condition of plugs and sockets circuit and overall wire Louis damaging avoiding the withdraw of the needle of integral replacing connector, realized the Fast Installation of dust cover, have characteristics simple in structure, with low cost.

Description of drawings

Fig. 1 is telescopic expander assembly drawing of the present utility model.

Fig. 2 is expansion pawl structural representation of the present utility model.

Fig. 3 is tube-in-tube structure schematic diagram of the present utility model.

Fig. 4 is offsetting spring structure schematic diagram of the present utility model.

Fig. 5 is piston structure schematic diagram of the present utility model.

Fig. 6 is rear cover structure schematic diagram of the present utility model.

Fig. 7 is push bolt structural representation of the present utility model.

Fig. 8 is handle arrangement schematic diagram of the present utility model.

Fig. 9 is bar linkage structure schematic diagram of the present utility model.

In figure, 1, the expansion pawl, 2, sleeve, 3, back-moving spring, 4, piston, 5, bonnet, 6, push bolt, 7, handle, 8, screw, 9, guide blot, 10, the pin I, 11, the pin II, 12, connecting rod.

The specific embodiment

By reference to the accompanying drawings embodiment of the present utility model is illustrated:

As shown in Figure 1, a kind of telescopic expander, described telescopic expander includes expansion pawl 1, connecting rod 12, sleeve 2, back-moving spring 3, piston 4, bonnet 5, push bolt 6 and handle 7; In conjunction with Fig. 8, described handle 7 is nested with on bonnet 5; In conjunction with Fig. 6, described bonnet 5 has to place the groove structure of sleeve 2 for front end, and the rear portion of described bonnet 5 has the through hole that passes in order to push bolt 6, and the above groove of the bonnet 5 described through holes in rear portion and bonnet 5 is communicated with; In conjunction with Fig. 3, the rear portion of described sleeve 2 is positioned at the groove of bonnet 5, and is connected with handle 7, bonnet 5 by screw 8; The both sides up and down of described sleeve 2 front ends have respectively hanger; Be positioned at sleeve 2 in conjunction with the described connecting rod 12 of Fig. 9, described connecting rod 12 is connected between expansion pawl 1 and piston 4 by pin II 11; The center of described sleeve 2 front portions has the groove for positioning piston 4; In conjunction with Fig. 5, described piston 4 is positioned at sleeve 2, and has the screwed hole that coordinates for push bolt 6 on the rear end face of described piston 4; In conjunction with Fig. 4, described back-moving spring 3 is nested with on described piston 4; In conjunction with Fig. 7, described push bolt 6 is passed the above through hole, groove of bonnet 5 and is threaded with piston 4; Described expansion pawl 4 is four, and four described expansion pawls 4 are along the circumference setting, and is fixed on the front end of sleeve 2.Turn push bolt during use, push bolt pushing piston, piston promote the connecting rod interlocking expansion pawl are expanded.

Claims

1. telescopic expander, it is characterized in that: described telescopic expander includes expansion pawl (1), connecting rod (12), sleeve (2), back-moving spring (3), piston (4), bonnet (5), push bolt (6) and handle (7); Described handle (7) is nested with on bonnet (5); Described bonnet (5) has to place the groove structure of sleeve (2) for front end, the rear portion of described bonnet (5) has the through hole that passes in order to push bolt (6), and the above groove of the described through hole in bonnet (5) rear portion and bonnet (5) is communicated with; The rear portion of described sleeve (2) is positioned at the groove of bonnet (5), and is connected with handle (7), bonnet (5) by bolt; The both sides up and down of described sleeve (2) front end have respectively hanger; Described connecting rod is positioned at sleeve (2), and described connecting rod is connected between expansion pawl (1) and piston (4); The anterior center of described sleeve (2) has the groove for positioning piston (4); Described piston (4) is positioned at sleeve (2), and has the screwed hole that coordinates for push bolt (6) on the rear end face of described piston (4); Described back-moving spring (3) is nested with on described piston (4); Described push bolt (6) is passed the above through hole, groove of bonnet (5) and is threaded with piston (4); Described expansion pawl (4) is four, and four described expansion pawls (4) are along the circumference setting, and is fixed on the front end of sleeve (2).