CN2339428Y - Built-in type double speed support apparatus - Google Patents

Abstract

The utility model discloses a device which can lead various semi-trailers of less than 40 ton and tractors to be coupled and disconnected. The original exposed type speed change box with a traditional design structure is cancelled by the device, and a speed change mechanism is arranged in an outer barrel (45). A spline shaft (26), a gear shaft (17), a straight gear (19) and a compound gear (14) which leads the straight gear and a bevel gear to be cast together into integration are also arranged in the outer barrel. The two ends of the middle shaft (16) of the speed change mechanism adopt steel backing compound material linings (21), (2). Two inner annular grooves are arranged in a gear shifting positioning sleeve (23). The purpose of pulling and pushing type gear shifting can be obtained through a spring (25) and a rolling ball (24) on the spline shaft (26). The utility model has the advantages of little work space occupation, compact appearance, good manufacture processing property, convenient operation, high effect, etc.

Description

Built-in double speed bearing set

When the utility model relates to a kind of can the coupling various superimposed trailers and tractor truck below 40 tonnes, with two kinds of bearing sets of speed lifting superimposed trailer not.

Be the matching used double speed bearing set of superimposed trailer now, the speed-change gear that two kinds of speed gear shift are used is exposed, and its shortcoming is that the working space that occupies is bigger, and manufacturing process is complicated, and inconvenience is installed.

It is a kind of by placing urceolus in-to-in speed-change gear to get fast and two kinds of speed at a slow speed that the purpose of this utility model will provide, and reach the double speed bearing set of both sides lifting simultaneously by connection pipe.

This device that is achieved in that of the present utility model is that former exposed speed-change gear is placed urceolus inside, the compound gear that straight gear and finishing bevel gear cuter alloying form is housed, bevel gear wheel, straight gear, gear wheel shaft, castellated shaft in it; There are two circular grooves gear shift locating bush inside, reach the purpose of plug-type gear shift by spring on the castellated shaft and spin, the axle two ends adopt steel back lining to be fixed in the urceolus in the speed-changing mechanism, it connects straight gear with spring pin with gear wheel shaft and links with it with key, compound gear adopts spring pin to connect with axle, castellated shaft and gear shift locating bush adopt the free-running fit suit, bevel gear wheel and screw mandrel link with straight pin, packing ring is arranged on the screw mandrel, thrust bearing and feed screw nut, bevel gear wheel rotating band movable wire bar rotates, on screw mandrel rotating band movable wire stem nut is done, and following motion, the feed screw nut connects with pin with inner core, the feed screw nut is moved become inner core on, following motion, inner core and support foot assembly are with transverse tube and bolt, nut connects, and connection pipe connects with axle one end, opposite side is passed in motion reach both sides lifting simultaneously, this utility model finishing bevel gear cuter, compound gear all adopt precision cast to form, and have favorable manufacturability.

The utility model need not to manufacture special-purpose gearcase, just becomes a kind of speed-changing mechanism of novelty by means of urceolus, obtains two kinds of output speeds by variable gear, realized that hoisting force is big, the effect height reduces to take up space, and the utmost point is convenient to install, advantages such as anufacturability is good, and is easy to operate.

Accompanying drawings embodiment:

Fig. 1 is the diagrammatic cross-sectional view of double speed bearing set.

As can be known from Fig. 1: this utility model is built-in with speed-changing mechanism at urceolus, comprising finishing bevel gear cuter 15, compound gear 14 are arranged, straight gear 19, gear wheel shaft 17, castellated shaft 26, and have two circular grooves in gearshift locating bush 23 inside, reach plug-type gear shift purpose by spring on the castellated shaft 31 25 and ball 24.Steel back lining 7 is adopted at axle 16 two ends in the speed-changing mechanism, 21 and circlip 22 be fixed in the urceolus, it connects with gear wheel shaft 17 with spring pin, straight gear 19 usefulness keys 18 link with it, compound gear 14 adopts spring pin to connect with axle 13, castellated shaft 26 adopts the free-running fit suit with gearshift locating bush 23, gearshift locating bush 23 usefulness double-screw bolts 32, spring washer 33 is fixed on urceolus 45 outsides, castellated shaft 26 is embedded with steel backing cover 31 with axle 13 sections of matching, bevel gear wheel 15 links with screw mandrel 43 usefulness straight pins 35, thrust washer 38 is housed on the screw mandrel 43, thrust bearing 37, packing ring 36, spring pin 46 and feed screw nut 40, bevel gear wheel 15 rotating band movable wire bars 43 rotate, screw mandrel 43 rotary screw rod nuts 40 are done, following motion, feed screw nut 38 connects with inner core 44 usefulness pins 39, make feed screw nut 40 motion become inner core 44 on, following motion, inner core 44 and support foot assembly 50 usefulness transverse tubes 49 and bolt 47, nut 48 connects, inner core 44 is done, following motion is carried out in urceolus 45, connection pipe 12 connects with axle 13 and axle 11, the motion of speed change side just is passed to opposite side like this, lifting when finishing both sides, driven end axle 11 is fixing with steel backing cover 2 and back-up ring 10 in urceolus 1, bevel gear wheel 15 also is housed in urceolus 1, bevel pinion 4 and packing ring 3, and bevel pinion 4 and axle 11 usefulness composite pins 5,6 connect firmly, auxiliary hole clogs it with stopping up 7, urceolus 1 and urceolus 45 ends are used end cap 8 respectively, 20 lids are tight, urceolus 1, urceolus 45 outsides are provided with lubricating cup 9, be used for the lubricated of interior each gear of thrust bearing 37 and change speed gear box, with rivet 42 label 40 be fixed on urceolus 45 outsides simultaneously.Hand crank 30, with double-screw bolt 27, nut 28 and packing ring connect in castellated shaft 26.

The utility model in use, when tractor truck and superimposed trailer need be thrown off, because last action is the rise state, can directly shake hand crank 30, this moment, castellated shaft 26 end splines matched with the splined hole of compound gear 14 1 ends, drive bevel gear wheel 15 by the finishing bevel gear cuter in the compound gear 14, auger tooth 15 drives screw mandrel 43, screw mandrel 43 drives nut 40, feed screw nut 40 does by pin 39 connections with inner core 45, following motion, inner core 45 makes support foot assembly 50 contact with ground, when support foot 50 with after face contacts, outwards spur castellated shaft 26, make gear and straight gear 19 engagements on the castellated shaft, this moment gear wheel shaft 17 with compound gear 14 in the straight gear partial tooth engagement, and castellated shaft 26 breaks away from interlocking pattern with compound gear 14, whole speed-changing mechanism is in slow shelves control position, rotate castellated shaft 26, can obtain big hoisting force with less turning effort, after supporting makes superimposed trailer be raised to certain altitude, the tractor truck superimposed trailer can advance to throw off, and when needs are coupled, operates opposite with above-mentioned action.

Claims (1)

1, a kind of built-in double speed bearing set is characterized in that: speed-changing mechanism is placed urceolus inside, the compound gear (14) that straight gear and finishing bevel gear cuter alloying form is housed in it, bevel gear wheel (15), straight gear (19), gear wheel shaft (17), castellated shaft (26); There are two circular grooves gearshift locating bush (23) inside, spring (25) and ball (24) are arranged on the castellated shaft (26), steel back lining (21) is adopted at the axle two ends in the speed-changing mechanism, (2) be fixed in the urceolus (45), it uses spring pin (5), (6) connecting straight gear (19) with gear wheel shaft (17) links with it with key (18), compound gear (14) adopts spring pin to connect with axle (16), castellated shaft (26) adopts the free-running fit suit with gearshift locating bush (23), bevel gear wheel (15) links with straight pin (35) with screw mandrel (43), packing ring (36) is arranged on the screw mandrel (43), feed screw nut (40) connects with pin with inner core (45), inner core (45) and support foot assembly (50) transverse tube (49) and bolt (47), nut (48) connects, connection pipe (12) and axle (11), (13) one ends connect.

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