KR101521210B1

KR101521210B1 - Foldable transfer cart

Info

Publication number: KR101521210B1
Application number: KR1020140134148A
Authority: KR
Inventors: 고병기
Original assignee: 고병기
Priority date: 2014-10-06
Filing date: 2014-10-06
Publication date: 2015-05-19

Abstract

The present invention discloses a multistage load control type bogie.
A multi-stage load-adjusting type bogie of the present invention comprises a base portion on which a wheel is mounted on a lower surface, a fixed portion of which is raised and lowered from above the base portion, a fixed lifting and lowering bar is coupled and fixed to the rear side, A fixed rail which is vertically provided on a rear upper surface of the base portion and on which both ends of the fixed lifting and lowering bar are slidably inserted, and an upper portion disposed on the front side of the fixed rail, And a resilient adjusting portion for adjusting an elastic force according to a magnitude of a load applied to the variable rails, wherein the elastic regulating portion comprises: And a plurality of latching grooves formed at the lower side by being hinged to the lower side A ratchet, and a stop pin provided at one side of the base and hooked to one of the plurality of latching grooves, wherein the fixed rail is hinged to one side of the lower end to receive an operation force of a worker, The end portion of the lifting pedal portion extending from the hinge to the variable rail side is in contact with the bottom surface of the pushing pin provided on the variable rail and the end portion extending to the other side is projected to receive the power of the worker, The extended end portion contacting the lower surface of the urging pin is lifted to lift the urging pin.
According to the present invention having such a configuration, the loading section can be moved downward to the floor side with only a simple operation, thereby facilitating the loading of the object placed on the floor.

Description

{Foldable transfer cart}

The present invention relates to a multistage load control type bogie capable of automatically adjusting the height of a product, and more particularly, to an operator capable of selectively lifting or setting the height of the loading unit with a simple operation, And the loading section is automatically elevated when loading, so that the end point of the object to be dropped can be held at the waist position of the operator, thereby improving the convenience of use.

Generally, a conveyance truck is for conveying a load, and includes a loader for loading the load and a wheel for moving the loader.

However, since the conveying carriage of the related art has a fixed height, the user has to bend his or her back or leg according to the height of the load when the user moves the load.

In order to solve such a problem, Korean Patent Registration No. 10-0306632 discloses a device for adjusting a height of a bogie. The conventional conveying bogie is capable of adjusting the height of the upper plate by pneumatic pressure input / output through the operation of the push lever. However, since the height of the upper plate is directly adjusted by the user, the efficiency of the work is lowered. Therefore, for the sake of convenience of the work, the loading car is automatically raised or lowered depending on whether or not the loaded cargo is loaded so that the cargo is located at the same height regardless of the cargo load amount, .

In order to solve such a problem, the present applicant has filed a 'transfer lender' of Korean Patent Laid-Open No. 10-2010-0066048, and the claim 1 has a base portion provided with a conveying wheel; A loading unit installed on the base unit at a predetermined distance away from the base unit and capable of loading loads; And a supporting unit for vertically supporting the loading unit with respect to the base unit, wherein the supporting unit comprises: a connecting unit for vertically connecting the loading unit and the base unit; And a lifting means connected to the loading portion and lifting or lowering the connecting portion or the loading portion according to the weight of the load placed on the loading portion.

In addition, the applicant of the present invention has been registered in Korean Registered Patent No. 10-0930085 entitled " transfer truck " A loading unit installed on the base unit at a predetermined distance away from the base unit and capable of loading loads; And a supporting unit for supporting the loading unit so as to be able to move up and down with respect to the base unit, wherein the lower ends of the supporting units are slidably coupled to the base unit in a first direction extending in parallel with the longitudinal direction of the base unit First and second link members including two pivotal rods rotatably coupled to each other in an X (X) shape and spaced apart from each other along a second direction intersecting with the first direction, And a pivoting member for connecting the pivoting rods of the first and second link members to each other so as to vertically connect the loading unit and the base unit to each other; And the connecting portion or the loading portion is lowered or raised according to the weight of the load to be loaded on the loading portion, A cylinder body mounted on the cylinder and having an upwardly and downwardly extending elevation groove formed therein and having an air inlet communicating with the elevation groove on a lower side thereof; A cylinder rod having an upper end supporting the connecting portion or the loading portion and provided with a spring mounting groove extending a predetermined depth from a lower end thereof, an upper end supported by the upper surface of the spring mounting groove, and a lower end supported by the lower surface of the cylinder body And an elastic spring biasing the cylinder rod upward to elastically bias the cylinder rod so that the pressure of the air compressed in the cylinder body without the power of the external power source and the load of the load loaded on the loading portion The load portion is spaced upward from the base portion by a predetermined distance And a pneumatic pressure regulating means for controlling the pressure inside the cylinder body to adjust the descent height of the stacking unit per unit weight of the stacked load according to the specific gravity of the load placed on the stacking unit Wherein the air pressure regulator includes an extension pipe connected to the cylinder body and having an end connected to the cylinder body to provide an air passage through which the air flowing in and out through the air inlet port moves, And a regulator for regulating the pressure.

The present applicant has also filed an application for an improved 'folding transfer truck' through Korean patent application No. 10-2012-0142914, but it is not possible to control the products of various weights by a single truck due to difference in loading load There is a problem that there is inconvenience in use.

In addition, the present applicant has filed and filed an application for an improved multistage load control type bogie through Korean Registered Patent No. 10-1412952. A loading unit installed to be raised and lowered from above the base unit; The first link member and the second link member are hinge-coupled to the link shaft in a state where the centers of the first link member and the second link member are crossed with each other, and the upper end of the first link member is hinged to the loading unit The lower end of the second link member is slidably inserted in a rail slot formed in the base portion and is linearly moved. The upper end of the second link member is slidably inserted in a rail slot provided in the loading portion, A link connecting part; The hinge unit includes a tubular fixed body having one side opened and a hinge coupled to one end of the loading unit so as to be lifted up, And a resilient supporter having a fixed body and a resilient supporter installed inside the protruding and retracting body and including a housing having a spring for elastically supporting the resorbing body and a cover for covering the outer surface of the fixed body, For type bogies,

Wherein one end of each of the first and second link members is formed with a multi-step hole having a plurality of engagement grooves along a longitudinal direction at one end of the link connection member, the one end of the first and second link members being close to the mount unit about the link shaft, And a latching pin extending from an outer surface of the bracket to extend from the outer surface of the bracket to extend toward the link member having the multi-stepped hole formed therein, the latching pin being inserted into the multi-step hole and engaged with any one of the plurality of latching grooves. A multi-stage load control type bogie is disclosed.

However, in order to load the objects placed on the floor on the loading part, the worker has to bend his / her waist to hold the object placed on the floor and lift it up to the position of the loading part.

Registered patent publication No. 10-0306632: elevator control device of bogie Japanese Patent Application Laid-Open No. 10-1001677: A conveying device having a conveyed object support which ascends and descends Japanese Patent Application Laid-Open No. 10-2013-0092166:

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art as described above, and it is an object of the present invention to provide an elevator for a vehicle, which can control a height of a loading part to be maintained at a constant position according to a weight of a loading object, The present invention provides a multi-stage load control type bogie which is capable of selectively releasing a lift position of a loading section to facilitate ease of use.

That is, according to the present invention, the height of the loading part is adjusted in correspondence with the weight of the article when the article is loaded or unloaded in the loading section, so that the end point of the article is kept in the waist of the operator, And to provide a multistage load control type bogie capable of increasing the convenience of the loading operation of the load placed on the floor by releasing the lift position of the load portion only by a simple operation and moving it downward.

In order to achieve the above object, a multi-stage load control type bogie according to a preferred embodiment of the present invention includes a base portion having wheels on a lower surface thereof, a lifting / lowering portion provided on the upper side of the base portion, And a fixed rail which is vertically provided on a rear upper surface of the base and is slidably inserted into both ends of the fixed lift bar, A variable rail disposed at a front side of the fixed rail and having an upper end hinged to be pivotable so that both ends of the variable lift portion are slidably inserted and an elasticity adjusting portion for adjusting an elastic force according to the magnitude of the load, Is hinged to one side of the lower end of the variable rail And a stop pin which is provided at one side of the base and engages with one of the plurality of latching grooves. The stationary rail is hinged to the lower end of the ratchet, and the lifting pedal Wherein the end portion of the lifting pedal portion extending to the variable rail side with respect to the hinge is held in contact with the lower surface of the pushing pin provided on the variable rail and the end portion extending toward the other side is projected to receive the pressing force of the operator And when the operator applies pressure to the pedal, an extended end portion that is in contact with the lower surface of the pedal effort pin is lifted up to lift up the pedal effort pin.

According to a preferred aspect of the present invention, the loading section further comprises a gas cylinder whose one end is fixed to the front lower surface and the other end is fixed to the variable elevating section.

In another preferred aspect of the present invention, the upper end of the fixed rail and the upper end of the variable rail are hinged to each other, and the variable rail is formed with a slot having a long hole so as to have a displacement in the vertical direction.

According to another preferred aspect of the present invention, the fixed rail includes a load attachment member which is provided as a triangular-shaped heavy member hinged to one side of the fixed rail, and whose one end supports the variable rail by pushing the variable rail forward have.

The multistage load control type bogie according to the present invention can easily adjust the operation position where the loading section is located in the operator's waist dancing with respect to the load with various loading weights and also allows the loading section to move downward to the bottom side only with a simple operation Thereby facilitating the loading of the objects placed on the floor, thereby enhancing convenience in use.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view for explaining the overall configuration of a multi-stage load-adjusting truck according to the present invention; Fig.
FIG. 2 is a plan view for explaining a configuration of a main part of a multi-stage load-adjusting type bogie according to the present invention,
FIGS. 3 to 5 are views for explaining a load adjusting operation of the multistage load adjusting type bogie according to the present invention;
6 to 8 are parts for explaining a configuration of a recess according to the present invention,
9 and 10 are views for explaining the operation of the multi-stage load adjusting type bogie according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a multistage load control type bogie according to the present invention will be described with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings are denoted by the same reference numerals as possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a side view for explaining the overall construction of a multistage load adjusting type bogie according to the present invention, FIG. 2 is a plan view for explaining a main constitution of a multistage load adjusting type bogie according to the present invention, FIG. 4 shows a state for loading a load in a lowered state, and FIG. 5 is a side view showing a state where the load is unloaded, that is, a state in which the loading part is moved downward.

6 is an explanatory view for explaining the configuration of the lifting and lowering elastic part in the multistage load control type bogie according to the present invention, FIG. 7 is a view showing a vertical frame connected vertically to the base part, FIG. And a variable rail to which the adjusting ratchet and the lift-off lever are connected.

Finally, FIG. 9 is a view showing a state in which the object is loaded on the loading unit in the multi-stage load control type braking apparatus according to the present invention, and FIG. 10 is a diagram showing a state in which a lifting force is applied to the loading unit.

The construction of the multistage load-adjusting carriage 1 according to the present invention will be described in detail with reference to the drawings.

The multistage load control type bogie 1 according to the present invention comprises a base unit 10, a loading unit 20 located on the upper side of the base unit 10 so as to be able to move up and down, A fixed rail 15 for supporting the loading part 20 from the rear side by vertically connecting and supporting the loading part 20 and a loading rail 15 arranged on the front side of the loading rail 15 for holding the loading part 20, A resilient adjusting part for adjusting the lifting and lowering elasticity of the loading part 20 according to the size of the loading load, And an elevating / releasing pedal portion (38) for moving the elevating / lowering pedal portion (32) in a no load state.

A plurality of wheels w are installed on a lower surface of the base portion 10 and a pair of vertically extending pairs of vertically extending bases 10 are provided at both sides of the base portion 10, (Not shown) in the direction opposite to each other, and each of the rail grooves of the pair of fixed rails 15 is provided with a pair of fixed rails 15 Both ends of the fixed lifting portion 21 to be described later are slidably inserted and guided.

The loading unit 20 is a kind of supporting element having a flat upper surface for loading the object to be transported, and is structured to be supported by a fixed rail 15 and a variable rail 30 which will be described later.

The loading part 20 is provided with a fixed elevating part 21 and a variable elevating part 23. The fixed elevating part 21 is integrally fixed to the loading part 20 and fixed to the variable elevating part 23 are provided so as to have displacements in the forward and backward directions with respect to the fixed elevating portion 21. [

The variable lift 23 is provided to have an elastic displacement with respect to the fixed lift 21 and the fixed lift 21 and the variable lift 23 are shown in FIG. And a plurality of tension springs 41 are connected as shown.

In the present invention, it is proposed that a plurality of gas cylinders 45 are additionally provided in addition to constituting a plurality of tension springs 41 so that the variable lift portion 23 can have a stable elastic displacement. 2, one end of the gas cylinder 45 is fixed to the front lower surface of the loading unit 20, and the other end of the gas cylinder 45 is fixed to the variable elevating unit 23. As shown in FIG.

The fixed rail 15 is vertically provided on a rear upper surface of the base portion 10 and is an element guiding in a vertical direction by sliding both ends of the fixed lifting bar 21. [

That is, the stationary rail 15 is a kind of column member vertically provided on the rear side of the base portion 10, and has a configuration in which a pair of the stationary rail 15 is provided in the width direction so as to support the loading portion 20 from both sides A rail groove (not shown) is formed in a direction facing each other, not shown, so that both ends of the fixed lifting portion 21 are slidably fitted.

The upper end of the fixed rail 15 is hinged to a variable rail 30 which will be described later, and a load acting on the variable rail 30 in a direction of pushing the variable rail 30 forward as shown in FIG. 1 An additional body g may be additionally provided.

On the other hand, the load applying member g is a triangular-shaped heavy member hinged to one side of the fixed rail 15, and one end thereof pushes the variable rail 30 toward the front side by its own weight. The shape and size of the load applying body g may be variously modified as long as one end thereof pushes the variable rail 30 toward the front side by its own weight.

The variable rail 30 is disposed on the front side of the fixed rail 15 and the upper end thereof is hinged to the fixed rail 15 so as to be rotatable and both ends of the variable lift portion 23 are slidably inserted Is an element for guiding the elevation of the variable lift portion (23).

The variable rail 30 is a kind of pillar member similar to the fixed rail 15 and has a configuration in which a pair of the variable rails 30 are provided in the width direction so as to support the loading unit 20 on both sides, (Not shown) so that both ends of the variable lift portion 23 are slidably fitted.

The upper end of the variable rail 30 is hinged to the fixed rail 15 so that the hinge-engaging portion can be displaced in the vertical direction by a predetermined distance in order to operate the load- And a hole is formed in the slot 31.

In the present invention, a plurality of latching groove portions 35h are hingedly coupled to one side of the lower end of the variable rail 30 so as to be downwardly engaged with the variable rail 30, A load adjusting ratchet 35 and a stop pin 11 provided at one side of the base 10 to be engaged with any one of the plurality of latching grooves.

In this configuration, when the change of the height point according to the load size of the load, that is, the elasticity adjustment is required, the operator lifts the load-adjusting ratchet 35 upward and lifts up the load-adjusting ratchet 35, The elasticity adjustment is completed.

That is, according to the present invention, it is possible to use the load-adjusting ratchet 35 by simply adjusting the change of the height point caused by the load change of the load. In the plurality of latching groove portions 35h, Since the gap between the fixed rail 15 and the variable rail 30 is the farthest apart from the fixed rail 15 in this state, the elastic force of the tension spring 41 Is the largest state.

4 shows a state in which the gap between the fixed rail 15 and the variable rail 30 is the closest in this state because the engaging groove portion in which the stop pin 11 is located is used at a stage where the load is light. The elastic force of the spring 41 is relatively reduced as compared with the elastic force of the spring 41 shown in FIG.

For reference, the method of moving the load-adjusting ratchet 35 is to move one end of the load-adjusting ratchet 35 disposed in the width direction of the base 10 with a hand while slightly lifting up, It can be positioned in the engaging groove 35h.

In the meantime, according to the present invention, the lifting and lowering of the lifting and lowering pedal portion (20) can be easily performed by releasing the lifting and lowering of the loading portion (20) by only a simple operation so that the loading portion (20) 38).

The lifting pedal portion 38 is hinged to one side of the lower end of the fixed rail 15 so as to perform seesaw motion. The other end of the lifting pedal portion 38 is protruded toward the rear side of the base portion 10 so that the operator can step on the foot. Is configured to extend to the side of the variable rail (30) and come into contact with the lower surface of the pressing pin (32) provided on the variable rail (30). When the lifting pedal portion 38 having such a configuration applies a pressing force to an end of the lifting pedal portion 38 by an operator, the other end of the lifting pedal portion 38 is engaged with the pressing pin 32 provided on the variable rail 30 As a result, the variable rail 30 is lifted. In this state, the resilient force of the tension spring 41 and the pushing force of the gas cylinder 45 cause the variable rail 30 to move to the fixed rail 30, The loading unit 20 is moved downward toward the bottom as the loading unit 20 is placed in a no-load state.

Accordingly, it is possible to easily load the article placed on the floor into the loading section 20. [

It is to be understood that the present invention is not limited to the disclosed embodiment and that various changes and modifications may be made without departing from the spirit and scope of the present invention as set forth in the appended claims. It is obvious to those who have knowledge. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

1: Multistage load-controlled truck
10: base part 15: fixed rail
20: loading part 21: fixed elevating part
23: variable lift 30: variable rail
31: Slot 32: Lever pin
41: tension spring 45: gas cylinder
g: load additive

Claims

A base 10 on which a wheel w is mounted and a fixed lifting bar 21 fixed to the rear side of the fixed lifting bar 21, A loading part 20 connected to the front side by a tension spring 41 and having a variable elevating part 23 displaced by an elastic force and a vertical part provided on a rear upper surface of the base part 10, A fixed rail 15 to which both ends of the movable rail 21 are slidably inserted and a movable rail 15 disposed on the front side of the fixed rail 15 and hinged to be rotatable with respect to the upper end of the fixed rail 15, And a variable rail (30) having both ends of the variable lift portion (23) slidably inserted therein and having an elongated hole (31), and an elasticity adjusting portion for adjusting an elastic force according to the magnitude of the load weight, For type bogies,
The elasticity adjusting portion includes a load adjusting ratchet 35 having a plurality of latching groove portions 35h hinged to one side of the lower end of the variable rail 30, And a stop pin (11) which is engaged with one of the engaging groove portions of the stopper pin
The fixed rail 15 is hinged to one side of the lower end and is provided with an elevating pedal portion 38 which is operated by a worker's pressing force. The elevating pedal portion 38 is hinged to the variable rail 30 The extended end portion is engaged with the lower surface of the pressing pin (32) provided on the variable rail (30), and the end portion extending to the other side is protruded to receive the pressing force of the operator. 32) is configured to lift up said pedal pin (10) while lifting up an extended end portion (32) which is in contact with a lower surface of said pedal (32).

2. The apparatus according to claim 1, characterized in that the loading section (20) further comprises a gas cylinder (45) whose one end is fixed to the front lower surface and the other end is fixed to the variable elevating section (23) Adjustable Balance.

delete

2. The apparatus according to claim 1, wherein the fixed rail (15) is a triangular-shaped heavy member hinged to one side of the load rail (15), and one end of the load rail (15) pushes the variable rail (30) Further comprising: a plurality of load-controlled balancers.