KR20100066048A

KR20100066048A - Transtfer cart

Info

Publication number: KR20100066048A
Application number: KR1020080124682A
Authority: KR
Inventors: 고병기
Original assignee: 고병기
Priority date: 2008-12-09
Filing date: 2008-12-09
Publication date: 2010-06-17

Abstract

The present invention relates to a transfer bogie configured to automatically move up or down in accordance with the load of a load into which a load carrying a load is received. The transfer bogie according to the present invention includes a base portion provided with a transfer wheel, and the base portion upwards. It is installed spaced apart a predetermined distance and has a loading portion formed so as to load the load, and a support unit for supporting the loading portion to be elevated relative to the base portion, the support unit is capable of lifting the load portion and the base portion mutually And a connecting unit for elevating or lowering the connecting unit or the loading unit according to the weight of the load loaded on the loading unit connected to the connecting unit or the loading unit and connected to the base unit.

The transport cart according to the present invention has an advantage of maximizing the convenience of the operator because the height of the stacker is automatically adjusted according to the weight of the load being loaded.

Description

Transfer cart {transtfer cart}

The present invention relates to a transfer bogie, and more particularly, to a transfer bogie configured to automatically raise or lower a loading portion for loading a load according to the load of the load.

In general, the transport cart is for transporting a load, and includes a loading box for loading a load and a wheel for moving the loading box.

The transfer cart is formed in various sizes or shapes of the loading box according to the object to be loaded.

Transfer carts are also used in many different types of workplaces, often used to transport parts and tools to the workbench.

By the way, the conventional transport cart has a fixed height of the carrying box is fixed, when the user moves the load, there was an inconvenience to bend the waist or legs according to the loading height of the load.

In order to solve this problem, Korean Patent Publication No. 10-0306632 discloses a device for adjusting the height of a truck.

The conventional transport cart disclosed is to be able to adjust the height of the top plate by the pneumatic pressure entered through the operation of the push lever.

By the way, the transfer cart of the prior art has a problem that the efficiency of the work is reduced because the user must adjust the height of the top plate directly.

Therefore, there is a need for a transport cart that can maximize the convenience of the operator by placing the load on the same height regardless of the load. there was.

The present invention is to meet the above necessity, an object of the present invention is to provide a transport cart that can automatically adjust the height of the stack according to the amount of the load to maximize the convenience of work.

The transport cart according to the present invention for achieving the above object is a base portion with a transfer wheel is installed, the base portion is installed to be spaced apart a predetermined distance upwards and the base portion, the loading portion and the loading portion the base portion And a support unit supporting the lifting unit with respect to the lifting unit, wherein the support unit is connected to the mounting unit and the base unit so as to be lifted from each other, and is installed on the base unit and connected to the connecting unit or the loading unit to load the stack unit. And lifting means for lifting or lowering the connection part or the load part according to the weight of the load loaded on the part.

Each of the connection parts includes two pivoting rods each of which has a lower end coupled to the base part in a first direction extending in parallel with the longitudinal direction of the base part and rotatably coupled to each other in an X shape. Pivot shafts interconnecting the intersection points of the first and second link members and the rotational rods of the first and second link members, the first and second link members being spaced apart by a predetermined interval along a second direction crossing the first direction. It includes a member, the lifting means is connected to the rotating shaft member is formed to raise or lower the rotating shaft member, the lifting means is coupled to the lower surface of the connecting portion or the loading portion and the control valve for adjusting the damping force is It is provided with a hydraulic or pneumatic showbar provided on one side, and a compression spring installed on the showbar to elastically bias the load portion upwards. desirable.

Each of the connection parts includes two pivoting rods each having a lower end coupled to the base part to be slidable along a first direction parallel to the longitudinal direction of the base part, and hinged to an X (X) shape to be rotatable with each other. First and second link members spaced apart from each other at predetermined intervals along a second direction crossing the first direction, a rotation shaft member interconnecting the hinge coupling portions of the rotation rods, and lower ends of the first and second link members respectively; And a third and fourth link member rotatably connected to an upper end of the link member and having two coupling rods hinged to each other in an X-shape so as to be rotatable. It may be formed to be slidably coupled along the first direction.

The transfer bogie is installed on the base member and is in contact with the lower surface of the loading unit which is lowered by the loading of the load, and the shock absorbing member to alleviate the impact caused by the falling collision of the loading unit. It may further include a guide member for guiding the lifting direction of the loading portion to prevent the flow in the front and rear or left and right directions and to move up and down in the vertical direction, the guide member is loaded It is preferable to protrude further a predetermined distance upward from the upper surface of the loading portion so as to prevent the departure from the portion.

Hereinafter, with reference to the accompanying drawings will be described in more detail the transport cart according to the present invention.

1 to 4 show a preferred embodiment of the transfer cart 100 according to the present invention.

Referring to the drawings, the transfer cart 100 includes a loading unit 20 for loading a load, a base unit 10 provided with a transfer wheel 11, and a loading unit 20 with respect to the base unit 10. It is provided with a support unit 30 for supporting to be able to move up and down according to the weight of the load.

The base portion 10 is provided with a transfer wheel 11 on the lower surface, in the present embodiment, the transfer wheel 11 is applied as a directional caster, the transfer wheel 11 is in addition to the environment of the place of use Various wheels can be applied depending on the type of load.

In addition, the handle 12 is coupled to the rear of the base portion 10, the handle 12 is two vertical bars 13 and a vertical bar extending a predetermined length upward from the rear of the base portion 10 ( 13, the gripping member 14 interconnecting the two vertical bars 13 at the upper end thereof is configured to allow the operator to grip the gripping member 14 and to easily move the transfer cart 100.

On the upper surface of the base portion 10, the lower guide rails 15 are installed at both edges so as to extend along the longitudinal direction (hereinafter referred to as the first direction 1) of the base portion 10, and the lower guide rails 15 Four) are provided, one each at the front and rear of both sides of the base portion (10).

The upper portion of the lower guide rail 15 is formed so that the buffer member 16 protrudes a predetermined length upwards, the buffer member 16 is lowered when the loading portion 20 to be described later is lowered by the loading of the load, It is for alleviating the impact applied to the loading portion 20 in contact with the lower surface of the loading portion (20).

In the center of the upper surface of the base portion 10, the elevating means 50 of the support unit 30 described later is provided.

The loading unit 20 is installed on the upper part of the base part 10 and provides a loading space in which loads are loaded. The lower guide rails 21 are provided at both front and rear sides of the lower part like the base part 10. It is formed to extend along the first direction 1.

Since the loading part 20 of the present embodiment is to load the plate, there is no separate separation preventing member installed on the upper surface, but there is a possibility that the loading part 20 may move away from the loading box by rolling movement during the movement of the feed cart 100 such as a roller or a spherical member. When used to load the load there is a separate edge may be formed along the edge, in addition to the shape or shape of the load 20 may be variously formed according to the characteristics of the load.

The support unit 30 supports the loading unit 20 to be elevated relative to the base unit 10, and the connection unit 31 supporting the base unit 10 and the loading unit 20 spaced apart in the vertical direction. And, coupled to the connecting portion 31 includes a lifting means (50) for lifting or lowering the loading portion (20).

The connecting portion 31 includes first to fourth link members 32, 33, 37, and 38 and a rotation shaft member 36, and the first and second link members 32 and 33 are rotatable, respectively. It has a rotation rod 34 is coupled to cross in the form of X (X) and formed on the upper surface of the base portion 10 to be spaced apart a predetermined interval along the second direction (2) orthogonal to the first direction (1) It is.

A roller member 35 is coupled to a lower end of each pivot rod 34, and the roller member 35 is coupled to the lower guide rails 15 so as to be slidable along the first direction 1. have.

Accordingly, the first and second link members 32 and 33 are rotated at the intersections of the respective rotation rods 34 so that the lower end slides in a direction toward or away from each other along the guide rail. Will increase or decrease.

The rotating shaft member 36 is installed to extend along the second direction 2 so as to interconnect the intersections of the rotating rods 34 of the first and second link members 32 and 33.

The third and fourth link members 37 and 38 are coupled to the first and second link members 32 and 33, respectively, and the third link member 37 has a lower end of the first link member 32, respectively. And two coupling rods 39 which are rotatably coupled to the upper ends of the rotation rods 34 and hinged in mutual X-shape, and the fourth link member 38 is also the second link member 33. The upper end of the rotating rods 34 of the lower end is rotatably coupled and has a coupling rod 39 hinged to each other X-shaped.

In addition, the reinforcing member extending along the second direction 2 to interconnect the coupling portions of the first and third link members 32 and 37 and the coupling portions of the second and fourth link members 33 and 38. 40 is provided so that the first and third link members 32 and 37 and the second and fourth link members 33 and 38 are loaded when the load is loaded on the mounting portion 20 and is loaded downward. Make sure that the separation distance between them remains constant.

The coupling rods 39 of the third and fourth link members 37 and 38 are also provided with a roller member 35 at an upper end thereof, and an upper guide rail 21 installed at a lower surface of the loading part 20. It is slidably coupled.

The lifting means 50 is to raise or lower the loading portion 20 according to the weight of the load loaded on the loading portion 20, is installed on the upper surface of the base portion 10 as described above, the upper end is the A hydraulic shock absorber 51 supporting the coaxial member 36 and a compression spring 56 installed on the hydraulic shock absorber 51 are included.

The hydraulic shobar 51 is formed on the upper end of the cylinder 52 installed on the base portion 10, the withdrawal rod 53 coupled to the cylinder 52 to be pulled out upward, and the upper end of the withdrawal rod 53. And a contact portion 54 in contact with the pivot shaft 36.

The compression spring 56 surrounds the lead rod 53 and the upper and lower ends thereof are supported by the contact portion 54 and the cylinder 52, respectively, so that the lead rod 53 is drawn out from the cylinder 52. Elastic bias as possible.

One side of the cylinder 52 is provided with a control lever 55 for adjusting the damping force of the hydraulic shobar 51, the flow path of the fluid moving in the cylinder 52 through the control lever 55 The damping force of the hydraulic shock absorber 51 is adjusted by expanding or narrowing. The damping force of the hydraulic shock absorber 51 is appropriately adjusted according to the specific gravity of the load to be loaded.

That is, in the case of metals such as iron, the damping force is increased because of the large specific gravity, and the damping force is lowered in the case of a load formed of a material having a relatively low specific gravity such as plastic.

For example, when the metal roller and the plastic roller of the same volume each have a weight of 1 kg per metal roller and 0.2 kg of plastic roller, when the loads are loaded into the loading part 20, 100 metal rollers are 100 kg But 100 plastic rollers are only 20kg.

Therefore, assuming that the damping force is set equal to each other and the same number of metal rollers and plastic rollers are loaded in the stacking section 20, the stacking section 20 having the metal rollers is lowered downward than the stacking of the plastic rollers. do.

Therefore, in order to be able to adjust the height of the loading unit 20 that the operator can easily work regardless of the type or specific gravity of the load, it is preferable to adjust the damping force according to the specific gravity of the load.

The control lever 55 for adjusting the damping force of the showbar 51 extends toward the handle 12 through extension rods 62 connected by the universal joint 61, and is supported by the handle 12. However, the rotary lever 63 is provided on the extension rod 62, so that the operator can rotate the rotary lever 63 to appropriately adjust the damping force of the show bar 51.

Preferably, a number or a separate mark for displaying the magnitude of the damping force is displayed on the rotary lever 63, and a reference point which is a reference to the handle 12 is displayed so that the damping force can be displayed through the numerical display corresponding to the reference point. The size can be easily identified by the operator.

In this embodiment, as the elevating means 50, the hydraulic shock absorber 51 and the compression spring 56 is applied, but unlike the pneumatic shock absorber may be applied, that is, not to convey various loads, that is, one kind In case of transferring only product or material, it is not necessary to adjust the damping force separately, so it can be installed as a shock absorber member without damping force adjusting function.

In addition, the lifting means 50 may be formed to raise or lower the loading unit 20 only by the elastic force of the compression spring 56 without having a show bar. In this case, the damping force cannot be adjusted, but when the load is loaded, the compression spring 56 is compressed by the load applied from the load 20 so that the load 20 is lowered, and the load 20 is removed by removing the load. When the load applied to the load becomes smaller, the loading unit 20 is elevated by the elastic restoring force of the compression spring 56.

Referring to the driving process of the feed cart 100 of the present embodiment are as follows.

First, the operator appropriately adjusts the damping force of the showbar 51 in accordance with the specific gravity of the load to be loaded via the rotary lever 63, and then loads the load to the loading unit 20.

The support unit 30 lowers the loading unit 20 according to the load of the load loaded on the loading unit 20. The loading unit 20 increases as the load of the load applied to the loading unit 20 increases. ) Slides along the first direction (1) so that the upper end of the coupling rod (39) coupled to the lower end of the rotating rod (34) coupled to the base portion (10) is separated from each other. The loading part 20 gradually descends by the rotation of 39.

Therefore, even if the load is continuously loaded, the height of loading the load on the loading unit 20 is kept constant so that the operator can conveniently perform the work.

When unloading the load by moving the transfer cart 100, the operator unloads from the topmost load, the load applied to the loading unit 20 is reduced every time the load is unloaded, so that the compression spring 56 The loading unit 20 is gradually raised by the elastic restoring force.

In more detail, the compression spring 56 pulls the lead rod 53 of the showbar 51 upward by the elastic restoring force of the compression spring 56, and the contact portion 54 rotates the rotation shaft rod. Will be pushed upwards.

Since the pivot shaft rods connect the intersection points of the pivot rods 34 of the first and second link members 32 and 33, the intersection of the pivot rods 34 also moves upward as the pivot shaft rods are raised and lowered. Ascending and descending, the top and bottom of the rotation rods 34 are moved in a direction closer to each other.

Since the upper ends of the rotation rods 34 are adjacent to each other, the coupling rod 39 also rotates so that the lower and upper ends thereof are adjacent to each other, and the loading unit 20 is gradually raised and lowered through this process.

Thus, since the height of the loading part 20 is lowered or raised according to the load of the loaded goods, the transport cart 100 according to the present embodiment has a predetermined height regardless of the amount of the load loaded on the loading part 20. Since the position, the operator can keep the height of the uppermost load loaded on the loading unit 20 when loading or unloading the load, or take out the load one by one, to maximize the work convenience .

5 shows another embodiment of the transport cart 100, the transport cart 100 of the present embodiment includes a guide member 70 protruding upward along the upper edge of the base portion 10.

The guide member 70 flows along the second direction 2 during the lifting or lowering of the loading unit 20 so that the load is separated or damaged to the first to fourth link members 32, 33, 37, and 38. In order to prevent this from occurring, the loading part 20 guides the lifting direction so that the loading part 20 can move up and down along the vertical direction.

In addition, the guide member 70 is formed so that the height of the upper end is relatively higher than the height when the mounting portion 20 is located at the top by the support unit 30, so that the loading portion 20 The loading of rollers or spherical members prevents the load from slipping off.

In the present exemplary embodiment, the guide member 70 has a rectangular pillar shape in which an upper surface extending continuously along the upper edge of the base portion 10 is open. Alternatively, a plurality of unit members may be edges of the base portion 10. It may be installed to be spaced apart from each other by a predetermined interval.

In addition, when the load has a plate shape with no possibility of detachment, the guide member may be formed so as to extend a predetermined length on each side of the base part 10 because only the lifting direction of the loading part 20 needs to be guided.

The guide member may be formed by attaching a separate member, but the vertical bar 13 of the handle 12 is extended by both vertical sides of the base part 10 to be loaded by the vertical bar 13. The lifting direction of the part 20 may be guided.

The remaining components of the embodiment shown in FIG. 5 are the same in form and function as the components of the embodiment shown in FIGS.

1 is a perspective view showing an embodiment of a transport cart according to the present invention,

Figure 2 is an exploded perspective view showing the loading portion and the connecting portion of FIG.

3 is a partial excerpt perspective view showing the base of FIG.

4 is a cross-sectional view of the feed cart of FIG.

Figure 5 is a partially cut perspective view showing another embodiment of the feed cart having a guide portion.

100; Transport bogie

10; Base part

20; Loading section

30; Support unit

31; Connection

50; Lifting means

70; Guide member

Claims

A base part provided with a transfer wheel;

A loading unit installed to be spaced apart a predetermined distance upward from the base unit and configured to load a load;

And a support unit for supporting the loading unit to be elevated relative to the base unit.

The support unit may be connected to the loading unit and the base unit to be mutually liftable, and

And a lifting means installed in the base part and connected to the connection part or the loading part to lift or lower the connection part or the loading part according to the weight of the load loaded on the loading part.

The method of claim 1,

Each of the connection parts includes two pivoting rods each of which has a lower end coupled to the base part in a first direction extending in parallel with the longitudinal direction of the base part and rotatably coupled to each other in an X shape. First and second link members installed to be spaced apart from each other by a predetermined interval in a second direction crossing the first direction;

Includes; a rotating shaft member for interconnecting the intersections of the rotating rods of the first and second link members,

The lifting means is connected to the rotating shaft member, characterized in that the transfer bogie is formed to raise or lower the rotating shaft member.

The method of claim 1,

The elevating means is coupled to the lower surface of the connecting portion or the loading portion and the hydraulic or pneumatic shobar installed on one side of the control lever for adjusting the damping force;

And a compression spring installed on the showbar to elastically bias the load portion upward.

The method of claim 3, wherein

Each of the connection parts includes two pivoting rods each having a lower end coupled to the base part to be slidable along a first direction parallel to the longitudinal direction of the base part, and hinged to an X (X) shape to be rotatable with each other. First and second link members spaced apart from each other by a predetermined distance along a second direction crossing the first direction;

A rotating shaft member interconnecting the hinge coupling portions of the rotating rod;

Each of the third and fourth link members having two coupling rods having a lower end pivotally connected to an upper end of the rotation rods of the first and second link members and hinged in an X-shape to be mutually rotatable; ,

Each of the coupling rods is characterized in that the upper end is formed to be slidably coupled along the first direction to the loading portion.

The method of claim 4, wherein

And a buffer member installed on the base member and contacting a lower surface of the loading unit lowered by the loading of the load to mitigate an impact caused by a falling collision of the loading unit.

The method of claim 1,

And a guide member coupled to the base part to guide the lifting direction of the loading part so that the loading part is prevented from flowing in the front-back direction or the left-right direction when the loading part is lifted or lowered, and is moved up and down in the vertical direction. Transfer bogie.

The method of claim 6,

And the guide member is formed to further protrude a predetermined distance upward from an upper surface of the loading portion to prevent the load loaded on the loading portion from being separated from the loading portion.

The method of claim 1,

The lifting means is characterized in that the lower end is supported by the base portion and the upper end is supported by the loading portion or the connecting portion is a transport spring, characterized in that the compression spring for lowering or lifting the loading portion depending on whether or not to load the load by the elastic force.