CN2341858Y

CN2341858Y - Trailer

Info

Publication number: CN2341858Y
Application number: CN 98227997
Authority: CN
Inventors: 张秋龙
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-30
Filing date: 1998-09-30
Publication date: 1999-10-06
Anticipated expiration: 2008-09-30

Abstract

The utility model relates to a trailer used for loading and unloading goods in airports. The utility model comprises a trailer frame, a towing handle arranged on the front end of the trailer frame and a bidirectional braking device. The back end of the trailer frame is provided with a hook, the bottom side of the trailer frame is provided with a universal wheel and a rear wheel, an adjustable roller is arranged on the trailer frame, and the circumference of the trailer frame is provided with a baffle plate and a directive wheel. No matter the towing handle of the trailer is positioned in an upward position or in a downward position by weight, the trailer can realize braking, which stops the occurrence of accidents. Besides, the universal wheel has the advantages of simple structure and high loading capability.

Description

A kind of trailer

The utility model relates to a kind of trackless terrestrial vehicle, and a kind of adrm that is applicable to of more specifically saying so advances to unload exclusive trail car goods, that satisfy plurality of specifications collection dress plate (case).

At present, be used for the non-motor-driven loading transport trolley in place (goods, airport, harbour) and have following defective: first: brake equipment is unidirectional: promptly otherwise traction downwards the time, trailer is in braking mode; Traction is upwards the time, and trailer is for braking mode, the trailer of this one-way brake, if because traction is placed on braking position being provided with, trailer very easily makes trailer move and causes accident to take place under the effect of external force.Second: the wheel flutter of trailer utilizes and is mounted with two cover bearing mechanisms on the minor axis and realizes turning to, the complex structure of this wheel flutter, and the cost height, eccentric throw is big, swing bearing unbalance stress, and poor reliability, service life is short.If the place injustice, car is easily swung.The 3rd: the hanging bearing seat of use, S. A. be by bearing installation in bearing seat, frame is then by on the hanging feet that is bolted to bearing seat.This hanging bearing seat owing to reasons such as processing, causes the axle center on a level not of the bearing seat of S. A. both sides in use, makes troubles to use, easily makes vehicle damage.The purpose of this utility model provides that a kind of no matter mop can both be realized car brakeing up or down the time and bogie wheel configuration is simple, center of gravity is low, the service-strong trailer.

The purpose of this utility model can realize in the following manner: a kind of trailer, include vehicle frame, be hinged on the traction handle of vehicle frame front center and the hook at middle part, vehicle frame rear end, front and back at the vehicle frame downside are mounted with cardan wheel and trailing wheel respectively, the upper front end of vehicle frame, the rear end is fixed with track adjusting wheel respectively, be mounted with several adjustable cylinders on the vehicle frame, on drawing, be mounted with bidirectional braking device dextral carriage, the both sides of vehicle frame and middle part are mounted with baffle plate respectively, described bidirectional braking device: include the orienting sleeve that is fixed on the vehicle frame and be sleeved in the orienting sleeve, the brake rod of tape guide key, the rear portion of brake rod is fixed with stop collar with bearing pin, the rear end of brake rod is fixed with guide pipe, spring housing is contained on the guide pipe, the front end of described brake rod has oblique groove, be fixed with rotating shaft on the brake rod front frame, be set with the rotating shaft pipe box on it, be fixed with the traction handle on the pipe box, be fixed with cam on the pipe box of brake rod phase; Described cam has two projectioies, and the thickness of upside projection can be stuck in the groove of brake rod, and the position of projection is on the cam: when the traction handle put down, the downside projection was moved after heading on brake rod; Traction is when upwards digging, and the upside projection is moved after being stuck in and making brake rod in the groove of brake rod.

The utility model compared with prior art has following advantage: at first, when trailer and tractor truck are thrown off, draw handle or rely on own wt downward, perhaps on artificial, turn over, no matter draw being in which kind of state, trailer can both be realized braking, the generation of fundamentally having stopped accident.Secondly, utilize wheel carrier and seat ring to make raceway, be provided with steel ball in the raceway, constitute similar antifriction-bearing box, make that structure is simplified greatly, compactness, load-carrying capacity is big, turns to flexibly, and is easy to use, reliable.

Description of drawings:

Accompanying drawing 1 is a structural front view of the present utility model.

Accompanying drawing 2 is structure birds-eye vieies of the present utility model.

Accompanying drawing 3 is partial enlarged drawings of bidirectional braking device of the present utility model.

Accompanying drawing 4 is enlarged drawings of cardan wheel of the present utility model.

The utility model is described in further detail with reference to the accompanying drawings:

Shown in accompanying drawing 1,2: a kind of trailer, include vehicle frame 4, be hinged on the hook 9 of vehicle frame 4 front center, be mounted with cardan wheel 2 and trailing wheel 7 respectively in the front and back of vehicle frame 4 downsides, the front end of the upside of vehicle frame 4, rear end are fixed with track adjusting wheel 8 respectively, so that cargo-carring case (plate) can have correct guiding on the trailer.Several adjustable cylinders 11 are installed on frame 4,, on drawing, are mounted with bidirectional braking device 31 dextral carriage so that case (plate) loading and unloading are lighter.Be mounted with rotating

baffle plate

6,10 on the support body of the both sides of vehicle frame 4, the middle part of vehicle frame 4 also is provided with baffle plate 5, goes here and there mutually to prevent trailer-mounted thing.

Shown in accompanying drawing 3: described bidirectional braking device 3, include the orienting sleeve 3-4 that is screwed on vehicle frame 4, be set with brake rod 3-7 in the orienting sleeve 3-4, be screwed feather key 3-8 on the cylinder of brake rod 3-7, feather key 3-8 matches with key way on the orienting sleeve 3-4, brake rod 3-7 can only be moved vertically, and can not rotate, the front end of brake rod 3-7 has oblique groove, the rearward end of brake rod 3-7 has pin shaft hole, with bearing pin 3-6 stop collar 3-5 is fixed on the brake rod 3-7 on it, and the rear end of brake rod 3-7 is fixed with guide pipe 3-9, spring 3-10 is sleeved on the guide pipe 3-9, the other end of the guide pipe 3-9 brake system of ining succession.On the vehicle frame 4 of brake rod 3-7 front portion, be mounted with rotating shaft 3-3, be set with rotating shaft pipe box 3-1 on the rotating shaft 3-3, pipe box 3-1 and rotating shaft 3-3 can rotate mutually, be fixed with traction on the pipe box 3-1 1, with the corresponding pipe box 3-1 of brake rod 3-7 on be fixed with cam 3-2, two projectioies are arranged on the described cam 3-2, wherein the projection of upside can be stuck in the groove of brake rod 3-7, when traction was put down 1, the downside projection was moved after heading on brake rod 3-7; When traction was upwards dug 1, cam 3-2 upside projection was moved after being stuck in and making brake rod 3-7 in the groove of brake rod 3-7, thus the realization bi-directional braking.And when drawing 1 level, cam 3-2 does not contact with brake rod 3-7, and brake rod 3-7 makes vehicle be in non-braking mode under the effect of spring 3-10.

Shown in accompanying drawing 4: Fig. 4 has showed the structural representation of cardan wheel.Described cardan wheel 2 includes U type wheel carrier 2-4 and the wheel 2-5 that is placed on the U type wheel carrier 2-4U type mouth, the upper end of wheel carrier 2-4 is the pipe shape, have the raceway of semicircle shape on its lateral surface, be positioned on the medial surface of seat ring 2-1 in the outside of wheel carrier 2-4 upper end pipe shape and also have raceway, two raceways are corresponding, along seat ring 2-1 radially have a radial hole that communicates with raceway, between two raceways, settle one group of steel ball 2-2 by radial hole, thereby seat ring 2-1 and wheel carrier 2-4 can be relatively rotated.In order to prevent that the steel ball 2-2 in the raceway from skidding off, in the radial hole of seat ring 2-1, be mounted with and stop up 2-8.Axially have oil hole 2-9 along stopping up 2-8, the termination, the outside of stopping up 2-8 is fixed with priming cup 2-7.Thereby steel ball 2-2 can freely be rolled in raceway, reduce unnecessary wearing and tearing, cardan wheel is rotated flexibly.Vibrated and skid off in order to prevent to stop up 2-8, seat ring 2-1 is provided with and prevents to stop up the locating dowel pin 2-6 that 2-8 skids off.For preventing that dust, sand grains from entering raceway, and anti-oil seepage, be provided with seal ring 2-3 up and down at wheel carrier 2-4 and seat ring 2-1 raceway mouth.

Claims

1. trailer, include vehicle frame (4), be hinged on the traction of vehicle frame (4) front center the hook (9) at (1) and middle part, vehicle frame (4) rear end, be mounted with cardan wheel (2) and trailing wheel (7) respectively in the front and back of vehicle frame (4) downside, the upper front end of vehicle frame (4), the rear end is fixed with track adjusting wheel (8) respectively, be mounted with several adjustable cylinders (11) on the vehicle frame (4), on drawing, be mounted with bidirectional braking device (3) (1) dextral carriage (4), the both sides of vehicle frame (4) and middle part are mounted with baffle plate (6) respectively, (10) and baffle plate (5), it is characterized in that: described bidirectional braking device: include the orienting sleeve (3-4) that is fixed on the vehicle frame (4) and be sleeved in the orienting sleeve (3-4), the brake rod (3-7) of tape guide key (3-8), the rear portion of brake rod (3-7) is fixed with stop collar (3-5) with bearing pin (3-6), the rear end of brake rod (3-7) is fixed with guide pipe (3-9), spring (3-10) is sleeved on the guide pipe (3-9), the front end of described brake rod (3-7) has oblique groove, be fixed with rotating shaft (3-3) on brake rod (3-7) front frame (4), be set with rotating shaft pipe box (3-1) on it, be fixed with traction on the pipe box (3-1) (1), be fixed with cam (3-2) on the relative pipe box (3-1) of brake rod (3-7); Described cam (3-2) has two projectioies, and the thickness of upside projection can be stuck in the groove of brake rod (3-7), and the position that cam (3-2) is gone up projection is: when putting down, the downside projection is moved after heading on brake rod (3-7) (1) in traction; Traction is (1) when upwards digging, and the upside projection is moved after being stuck in and making brake rod (3-7) in the groove of brake rod (3-7).

2. trailer according to claim 1, it is characterized in that: described cardan wheel, a kind of cardan wheel, include U type wheel carrier (2-4) and be installed in wheel (2-5) on U type wheel carrier (2-4) the U type mouth, described wheel carrier (2-4) upper end has raceway on the face of cylinder, the outside, be positioned on the inner side surface of seat ring (2-1) in wheel carrier (2-4) outside and also have raceway, be mounted with one group of steel ball (2-2) by the radial hole of being opened on the seat ring (2-1) between two raceways, settle in the radial hole on the seat ring (2-1) and stop up (2-8).

3. trailer according to claim 2 is characterized in that: described obstruction (2-8) has oil hole (2-9) vertically, and the termination, the outside of stopping up (2-8) is fixed with priming cup (2-7).

4. according to claim 2 or 3 described trailers, it is characterized in that: described seat ring (2-1) is provided with and prevents to stop up the locating dowel pin (2-6) that (2-8) skids off.

5. according to claim 2 or 3 described trailers, it is characterized in that: described wheel carrier (2-4) is provided with seal ring (2-3) up and down with seat ring (2-1) raceway mouth.

6. trailer according to claim 4 is characterized in that: described wheel carrier (2-4) is provided with seal ring (2-3) up and down with seat ring (2-1) raceway mouth.