CN102991603A

CN102991603A - Electric truck connecting rod auxiliary wheel device

Info

Publication number: CN102991603A
Application number: CN2012105297301A
Authority: CN
Inventors: 张玉超; 张晓录
Original assignee: Hangcha Group Co Ltd
Current assignee: Hangcha Group Co Ltd
Priority date: 2012-12-06
Filing date: 2012-12-06
Publication date: 2013-03-27

Abstract

The invention relates to an electric truck connecting rod auxiliary wheel device and aims to provide an electric truck connecting rod auxiliary wheel device so as to reduce the vibrating amplitude in the traveling process. According to the technical scheme, the electric truck connecting rod auxiliary wheel device comprises an auxiliary wheel which can freely rotate within 360 degrees in a horizontal plane, and also comprises a supporting plate which is to be hinged with a frame and can freely rotate around an axis on which a hinge point is positioned, wherein a shock absorber assembly is hinged at one end, which is far away from the hinge point of the frame, of the supporting plate; the other end of the shock absorber assembly is hinged with the frame; the auxiliary wheel is arranged on the lower surface of the supporting plate; the shock absorber assembly comprises a support hinged with the frame, a shock absorber on the outer surface of which a thread is tapped, and an adjusting nut which is in threaded connection with the outer surface of the shock absorber; a spring II is coaxially sleeved outside the shock absorber; two ends of the spring are respectively pressed against the support and the adjusting nut; and one end of the shock absorber far away from the support is hinged with the supporting plate. The device is suitable for an electric tray carriage.

Description

Electrocar connecting rod auxiliary wheel device

Technical field

The present invention relates to a kind of electrocar connecting rod auxiliary wheel device, mainly be applicable to electric pallet truck.

Background technology

The auxiliary wheel of conventional electric tray carriage, generally be to be rigidly connected on the vehicle frame by bolt, and can only in left and right horizontal surface, rotate freely by 360 degree, there is following drawback in the auxiliary wheel of this structure: 1, auxiliary wheel adopts and is rigidly connected, for broken terrain, can not play the effect of buffering, traffic safety is had an impact; 2, adopt the general power system of tray carriage of this kind auxiliary wheel should have damping, buffer action, this will make power system complicated, and car load inside is difficult for layout, and power system is when going wrong, and maintenance is inconvenient; 3, because this kind auxiliary wheel adopts and to be rigidly connected, when the part foreign material such as bolt, nut were arranged on ground, auxiliary wheel slided jointly with its generation easily, the wearing and tearing of quickening auxiliary wheel.

So engendered some auxiliary wheels with recoil spring, this kind auxiliary wheel is to have increased recoil spring on the basis of above-mentioned auxiliary wheel, also there is following drawback in the auxiliary wheel of this structure: 1, when Uneven road, the recoil spring of auxiliary wheel can absorb the vibration on road surface, but because after spring absorbs vibration, be in the elongation of gradually decay-compression link, prolonged driving and having vibrated, make operating personal be unfavorable for control, and increase easily operator's fatigue; 2, the auxiliary wheel of this kind structure although can reduce the amplitude of driving vibration, has prolonged vibration, increased the fugitiveness of driving, and the spring strength that generally is used on this kind auxiliary wheel is inadequate, and buffer action is not obvious, and damages easily.

Summary of the invention

The technical problem to be solved in the present invention is: provide a kind of simple in structure, electrocar connecting rod auxiliary wheel device that cost is low for the problem of above-mentioned existence, to reduce the amplitude of vibrating in the traveling process, shorten simultaneously period of vibration, improve the safety and stability of driving.

The technical solution adopted in the present invention is: electrocar connecting rod auxiliary wheel device, comprise can be in horizontal surface the auxiliary wheel that freely rotates of 360 degree, it is characterized in that: it also comprises for stay bearing plate hinged with vehicle frame and that can freely rotate around hinge-point place axis, on the described stay bearing plate, be hinged with vibration damper assembly away from hinge-point one end of itself and vehicle frame, this vibration damper assembly other end and vehicle frame are hinged, and described auxiliary wheel is installed on the lower surface of this stay bearing plate; Described vibration damper assembly comprises that the bearing hinged with vehicle frame, outside face attack threaded bumper, and the adjusting nut that is connected with the bumper outer surface thread; Wherein the outer coaxial sleeve of bumper has the spring II, and this both ends of the spring withstands respectively bearing and adjusting nut, and bumper is hinged away from bearing one end and stay bearing plate.

Be provided with the spring I for the protection of bumper between described bearing and the bumper.

On the described stay bearing plate, with the hinged end of vehicle frame the rotating shaft that can play with one rotation is installed, this rotating shaft is outer to be equipped with for captiveing joint with vehicle frame by axle sleeve, and the permanent seat that can the phase countershaft rotates.

The invention has the beneficial effects as follows: 1, auxiliary wheel is installed on the vehicle frame by stay bearing plate is hinged, can fluctuate around hinge-point place axis according to the road conditions on ground, thereby has improved the stationarity of driving, has increased the traveling comfort of operation.2, on the stay bearing plate, away from the hinged vibration damper assembly of hinge-point one end of itself and vehicle frame, utilize the spring II to absorb vibration, and eliminate partial vibration by bumper, thereby shortened period of vibration, improved operation comfort, reduced operator's strength at repeated alternation.3, the bumper outside face has been attacked screw thread and has been connected with adjusting nut, and regulating spring II intensity improves the stability of driving easily.4, the spring I is set between bearing and bumper, when bumper is compressed, plays buffer protection function, prevent bumper because vibration is too quickly, bumper is damaged, thus the service life of having improved bumper.

Description of drawings

Fig. 1 is constructional drawing of the present invention.

Fig. 2 is the exploded view of vibration damper assembly among Fig. 1.

Fig. 3 is the constructional drawing in the practical application of the present invention.

Fig. 4 is the exploded view of Fig. 3.

The specific embodiment

As shown in Figure 1, present embodiment comprises auxiliary wheel 1, stay bearing plate 2 and vibration damper assembly 3; Wherein auxiliary wheel 1 is installed on the lower surface of stay bearing plate 2, can freely rotate by 360 degree in horizontal surface; Wherein an end is hinged by being located thereon surperficial hinged seat and vibration damper assembly 3 for stay bearing plate 2 one ends, this vibration damper assembly other end is then hinged with vehicle frame 8, simultaneously, stay bearing plate 2 other end one are shaped with the connector 7 with through hole, by bearing pin the rotating shaft 4 that an energy rotates with stay bearing plate 2 is installed in the through hole of this connector, this rotating shaft is outer to be equipped with for the permanent seat 6 of captiveing joint with vehicle frame 8 and can phase countershaft 4 freely rotating by axle sleeve 5; Installation rear bearing sheet 2 around the shaft 4 place axis, rotate with respect to vehicle frame 8, therefore when running into uneven road surface, auxiliary wheel 1 can pass through easily, and the vibration that produces of driving is absorbed by vibration damper assembly 3 and eliminates, shorten the cycle of vibration, improved traveling comfort and the safety of driving.

As shown in Figure 2, bearing 3-1, the outside face that described vibration damper assembly 3 comprises and vehicle frame is hinged attacked threaded bumper 3-2, the spring I 3-3 between bearing 3-1 and bumper 3-2, and the adjusting nut 3-4 that is connected with bumper 3-2 outer surface thread; Wherein the outer coaxial sleeve of bumper 3-2 has spring II 3-5, and this both ends of the spring withstands respectively bearing 3-1 and adjusting nut 3-4, and bumper 3-2 is hinged away from bearing 3-1 one end and stay bearing plate 2.In actual the use, can realize according to the position that varying environment, different operating person regulate adjusting nut 3-4 the adjusting of spring II 3-5 intensity, to satisfy various operating mode.

In addition, this example arranges spring I 3-3 between bearing 3-1 and bumper 3-2, when bumper 3-2 is compressed, plays buffering and protective effect, prevents bumper 3-2 because vibration is too quickly, and bumper 3-2 is damaged, thus the service life of improving bumper 3-2.

As shown in Figure 3, Figure 4, in the practical application, by bolt permanent seat 6 is fixedly installed on the vehicle frame 8, bearing 3-1 is articulated on the vehicle frame 8 gets final product simultaneously; Can offer the holes of organizing diverse locations (highly different) with hinged support 3-1 at vehicle frame 8 as required more, thereby reach the demand of regulating auxiliary wheel 1 terrain clearance, also can adopt the method to come the intensity of regulating spring II 3-5 simultaneously.

Claims

1. electrocar connecting rod auxiliary wheel device, comprise can be in horizontal surface the auxiliary wheel (1) that freely rotates of 360 degree, it is characterized in that: it also comprises for stay bearing plate (2) hinged with vehicle frame and that can freely rotate around hinge-point place axis, described stay bearing plate (2) is upper, be hinged with vibration damper assembly (3) away from hinge-point one end of itself and vehicle frame, this vibration damper assembly other end and vehicle frame are hinged, and described auxiliary wheel (1) is installed on the lower surface of this stay bearing plate; Described vibration damper assembly (3) comprises that the bearing hinged with vehicle frame (3-1), outside face attack threaded bumper (3-2), and the adjusting nut (3-4) that is connected with bumper (3-2) outer surface thread; Wherein the outer coaxial sleeve of bumper (3-2) has spring II (3-5), and this both ends of the spring withstands respectively bearing (3-1) and adjusting nut (3-4), and bumper (3-2) is hinged away from bearing (3-1) end and stay bearing plate (2).

2. electrocar connecting rod auxiliary wheel device according to claim 1 is characterized in that: be provided with the spring I (3-3) for the protection of bumper (3-2) between described bearing (3-1) and the bumper (3-2).

3. electrocar connecting rod auxiliary wheel device according to claim 1 and 2, it is characterized in that: described stay bearing plate (2) is upper, with the hinged end of vehicle frame the rotating shaft (4) that can play with one rotation is installed, this rotating shaft is equipped with for captiveing joint with vehicle frame by axle sleeve (5) outward, and the permanent seat (6) that can phase countershaft (4) rotates.