CN209581034U - Can top bar caster device - Google Patents

Abstract

The utility model discloses it is a kind of can top bar caster device, including bearing wheels, wheel carrier and support base, wheel carrier is " S " type connecting rod rack, bearing wheels are mounted on the medium position of bracket, the rear end of bracket is mounted on support base by horizontal rotating shaft, and the front end of bracket is equipped with an auxiliary wheel." S " type connecting rod rack is equivalent to a lever main body.On level land, bearing wheels are in full load state, and auxiliary wheel is in vacant state.When encountering step, bearing wheels off-loading and it is lifted up under the action of tractive force, and auxiliary wheel gradually decreases down on step surface and bearing load rolls forward.After up the steps, gravity makes entire caster device return back to original state again.The utility model simple structure, it is reasonable and exquisite to design, and be mounted on logistics turnover cart only can make cart smoothly step up height with horizontal drag force is slightly less than the step of bearing wheels radius and continues to move ahead.

Description

Can top bar caster device

Technical field

The utility model relates to castor technical fields, and in particular to be a kind of castor being mounted on logistics turnover cart Device.

Background technique

The castor wheel footpath being mounted on logistics turnover cart all should not be too large, and the castor of excessive wheel footpath makes loaded goods Center of gravity it is higher, be easy to cause cargo to topple.Smoothness of the castor of larger wheel footpath when through out-of-flatness ground is better than steamboat The castor of diameter, but when it encounters step, is difficult to move ahead.

Summary of the invention

The purpose of the utility model is to overcome the defect that existing castor cannot be up the steps, propose that one kind only needs to draw Power can make logistics turnover cart is smoothly up the steps to continue forward caster device.

Realizing the technical solution of above-mentioned purpose is: it is a kind of can top bar caster device, including bearing wheels, wheel carrier and support Seat, bearing wheels are mounted on wheel carrier, and wheel carrier is mounted on support base, which is characterized in that the wheel carrier is " S " type connecting rod branch Frame, the top for being somebody's turn to do " S " type connecting rod rack are equipped with a bearing plate, and bearing wheels are mounted on the medium position of " S " type connecting rod rack, The rear end of " S " type connecting rod rack is mounted on support base by horizontal rotating shaft, the front end of " S " type connecting rod rack be equipped with one it is auxiliary Wheel is helped, bearing wheel shaft and auxiliary wheel shaft are parallel with the horizontal rotating shaft.

Further, the wheel footpath of the auxiliary wheel is the 1/4~1/3 of bearing wheels wheel footpath.

Further, the wheel footpath of the auxiliary wheel is the 1/3 of bearing wheels wheel footpath.

Further, the two sides of the support base are fixedly installed side plate.

In the utility model, " S " type connecting rod rack is equivalent to a lever main body, and its rear end forms rotation on support base Fulcrum, " S " type connecting rod rack can be in vertical direction tiltings.On level land, bearing wheels are in full load state, bearing plate and branch The bottom plane fitting of seat is supportted, auxiliary wheel is lifted by " S " type connecting rod rack, is in vacant state.When encountering step, bearing wheels By resistance, due to the presence of external traction force, step edge at this time becomes the fulcrum of a power, resistance and traction herein A upward resultant force is formed between power, this makes bearing wheels off-loading with joint efforts and is lifted up, at the same time, " S " type connecting rod rack Stress check calculation keeps front sagging, and auxiliary wheel gradually decreases down on step surface and bearing load.Continue to act in external traction force Under, bearing wheels are fully raised to step surface, auxiliary wheel almost bearing load and rolls forward.After up the steps, In Under gravity, " S " type connecting rod rack resets, and bearing wheels are in full load state again naturally, and auxiliary wheel is lifted again.So far, Entire caster device returns back to original state again, and top bar is completed.

The utility model simple structure, it is reasonable and exquisite to design, and is mounted on logistics turnover cart and only uses horizontal drag force Cart can be made smoothly to step up height to be slightly less than the step of bearing wheels radius and continue to move ahead.

Detailed description of the invention

Fig. 1 is the overall construction schematic diagram of the utility model one embodiment.

Fig. 2 is the schematic diagram of " S " type connecting rod rack in embodiment illustrated in fig. 1.

Fig. 3 is the explosive view of embodiment illustrated in fig. 1.

Fig. 4 is original state schematic diagram when the utility model encounters step.

Fig. 5 is the status diagram during the utility model top bar.

Fig. 6 is the status diagram of the rigid top bar of the utility model.

Fig. 7 is recoil state schematic diagram after the utility model top bar.

In figure: 1. support bases, 101. side plates, 102. rack shaft holes, 2. " S " type connecting rod racks, 201. bearing plates, 202. water Flat turn axis, 203. bearing wheels axis holes, 204. auxiliary axle holes, 3. bearing wheels, 301. bearing wheel shafts, 4. auxiliary wheels, 401. auxiliary Wheel shaft.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Figure 1 to Figure 3, the utility model includes bearing wheels 3, wheel carrier and support base 1, support base 1 and logistics turnover The bottom plate of cart is fixedly connected, and wheel carrier is mounted on support base 1, and difference with the prior art is, the wheel carrier is one " S " Type connecting rod rack 2, bearing wheels 3 are mounted on the medium position of " S " type connecting rod rack 2, and the rear end of " S " type connecting rod rack 2 passes through water Flat turn axis 202 is mounted on support base 1, and the front end of " S " type connecting rod rack 2 is equipped with an auxiliary wheel 4, the wheel shaft of bearing wheels 3 It is parallel with horizontal rotating shaft 202 with the wheel shaft of auxiliary wheel 4.Specific detailed construction is as described below:

As shown in Figures 2 and 3, the rear end of support base 1 is equipped with the rack shaft hole 102 of a horizontal direction." S " type connecting rod branch The top of frame 2 is equipped with a bearing plate 201, and rear end top position is equipped with a horizontal rotating shaft 202, and middle part is equipped with a bearing wheels Axis hole 203, front end are equipped with an auxiliary axle hole 204.Rack shaft hole 102 is adapted to horizontal rotating shaft 202；Bearing wheels axis hole 203 It is adapted to bearing wheel shaft 301；Auxiliary axle hole 204 is adapted to auxiliary wheel shaft 401.The rear end of " S " type connecting rod rack 2 passes through level Shaft 202 is mounted on the rack shaft hole 102 of support base 1；Bearing wheels 3 are mounted on bearing wheels axis hole 203 by bearing wheel shaft 301 On；Auxiliary wheel 4 is by assisting wheel shaft 401 to be mounted on auxiliary axle hole 204.

In the utility model, the wheel footpath of auxiliary wheel 4 is the 1/4~1/3 of 3 wheel footpath of bearing wheels.

As a preferred embodiment, the wheel footpath of auxiliary wheel 4 is the 1/3 of 3 wheel footpath of bearing wheels.

As shown in figures 1 and 3, in the utility model, the two sides of support base 1 are fixedly installed side plate 101.Side plate 101 can Position-limiting action is played to " S " type connecting rod rack 2.

The working mechanism for capableing of top bar to the utility model with reference to the accompanying drawing makes parsing.

As shown in figure 4, bearing wheels 3 are in full load state, the bearing plate 201 on " S " type connecting rod rack 2 on level land It is bonded with the bottom plane of support base 1, auxiliary wheel 4 is lifted by " S " type connecting rod rack, is in vacant state.

As shown in Figure 4 and Figure 5, when encountering step the radius of bearing wheels 3 (height of step be less than), bearing wheels 3 by Resistance, due to the presence of external traction force, step edge at this time becomes the fulcrum of a power, resistance (F herein_Resistance) and traction Power (F_{It leads}) between formed a upward resultant force (F_{It closes}), this makes 3 off-loading of bearing wheels with joint efforts and is lifted up, at the same time, " S " type 2 stress check calculation of connecting rod rack, its rear end rotate and are upturned around rack shaft hole 102, and front is sagging, makes the auxiliary wheel 4 of front end It gradually decreases down on step surface and bearing load, bearing plate 201 at this time is also detached from the bottom plane of support base 1.

As shown in Figure 6 and Figure 7, in external traction force (F_{It leads}) continue under effect, bearing wheels 3 are fully raised to step surface On, the almost bearing load of auxiliary wheel 4 and rolls forward.After up the steps, bearing wheels 3 are in full load state again naturally, By load gravity (F_Gravity) and tractive force (F_{It leads}) influence, bearing wheels 3 generate reply resultant force under the action of " S " type connecting rod rack 2 (F_{It is compound}), auxiliary wheel 4 is lifted again.So far, entire caster device returns back to original state again.As logistics turnover cart Continue to move ahead.

Claims (4)

1. one kind can top bar caster device, including bearing wheels, wheel carrier and support base, bearing wheels are mounted on wheel carrier, wheel carrier It is mounted on support base, it is characterised in that: the wheel carrier is " S " type connecting rod rack, should be set at the top of " S " type connecting rod rack There is a bearing plate, bearing wheels are mounted on the medium position of " S " type connecting rod rack, and the rear end of " S " type connecting rod rack passes through level Shaft is mounted on support base, and the front end of " S " type connecting rod rack is equipped with an auxiliary wheel, bearing wheel shaft and auxiliary wheel shaft and institute It is parallel to state horizontal rotating shaft.

2. it is described in accordance with the claim 1 can top bar caster device, it is characterised in that: the wheel footpath of the auxiliary wheel be carrying Take turns the 1/4~1/3 of wheel footpath.

3. it is described in accordance with the claim 1 can top bar caster device, it is characterised in that: the wheel footpath of the auxiliary wheel be carrying Take turns the 1/3 of wheel footpath.

4. it is described in accordance with the claim 1 can top bar caster device, it is characterised in that: the support base two sides fixation sets It is equipped with side plate.