KR20070111838A - Balance appratus of seesaw type - Google Patents

Abstract

A seesaw type balance apparatus is provided to prevent safety accidents by controlling whether to drive wheels, through a driving control unit. A seesaw type balance apparatus includes a supporting member, a rotating member(30), and a connection rod(40). The supporting member supports upper structures by being connected to the upper structures. The rotating unit is connected to the supporting member, and a pair of elongated holes is formed in both ends of the rotating member. One end of the connection rod is connected to slide along each elongated hole of the rotating member and the other end is connected to the wheel, so that the connection rod can be move up and down by the rotation of the rotating member.

Description

BALANCE APPRATUS OF SEESAW TYPE}

1 and 2 relates to a conventional balance maintaining device,

1 is a front view showing a state before operation

2 is a front view showing a state where the wheel rides over obstacles;

 3 to 11 are views of the present invention,

3 is a full exploded perspective view

4 is a perspective view of the combination

Figure 5 is a bottom perspective view showing a state provided with an auxiliary support

Fig. 6 is a side sectional view showing a state before operation of the rotation control means.

7 is a side sectional view showing a state after the operation of the rotation control means;

8 is a side sectional view showing a state in which a drive control means is provided;

9 is a side sectional view showing a state in which driving of a wheel is controlled by operation of a drive control means;

10 is a sectional front view showing a driving state on a flat surface.

11 is a front sectional view showing a moving state of the rotation means, the support means, the support means and the connecting rod in the course of the wheel over the obstacle;

<Description of Symbols for Main Parts of Drawings>

  10: support means 14: connecting plate

  20: support means 22: support

  24: guide officer 26: auxiliary support

  28: coupling hole 30: rotation means

  32: fastener 34: long hole

  40: connecting rod 42: insertion space

  44: coupling groove 50: wheel

  60: rotation control means 70: drive control means

  C: Rotating shaft D: Combined rod

In general, when moving a narrow farmland such as barns or furrows, many wheelbarrows were used, in which wheels were mounted only on the front and a stop was provided on the rear, but the wheelbarrow was difficult to maintain balance when the ground was uneven or there were many obstacles. In particular, when the load is large and heavy, or when there is fluidity such as pesticides, the center of gravity of the cart suddenly shifts to one side when the wheel crosses an obstacle, causing the cart to collapse frequently.

In order to solve the problem of the wheelbarrow, which is difficult to maintain the balance, a two-wheel, three-wheel or four-wheeled cart was proposed, in which a wheel was additionally mounted on the wheelbarrow.

However, this type of wheelbarrow, which simply increases the number of wheels, may be easier to maintain in general than a wheelbarrow, but when one wheel is lifted by an obstacle while carrying a heavy and bulky load, the weight of the baggage is tilted to one side. As the overall balance of the cart is broken, the collapse of the cart could not be solved.

Korean Patent Registration No. 531111, "Balance Maintenance Device for Carts", has been proposed to solve such a balance problem of carts.

As shown in FIG. 1, the conventional balance maintaining device includes a support means (3) having a frame (1) of a wheelbarrow and a pivot shaft (2) provided at a center thereof, and the support means (3). A connecting rod 5 connected to the pivot shaft 2 so as to be rotatable and a wheel 4 installed at a lower end thereof;

Consisting means 6 for limiting the rotation angle of the connecting table (5).

Thus, as the support means 3 and the connecting table 5 are connected to each other through the rotation shaft 2 so as to be mutually rotatable, even if one wheel is lifted in the process of passing an obstacle as shown in FIG. Through the support means 3 to maintain the horizontal state through, the phenomenon that the load is pulled to one side as the support means 3 is tilted can be prevented, there are the following problems.

First, when one wheel is lifted by an obstacle, the leveling means of the support means 3 can be maintained, but as shown in the drawing, the position of the pivot shaft 2 serving as a substantial balance point of the whole wagon is biased to one side, thereby maintaining balance. The whole wagon, including the device, can only tilt to one side.

As the balance point is shifted to one side, the center of gravity of the load is moved along the balance point, and thus the whole balance is broken by adding the weight of the load while the balance point is shifted to one side, resulting in a problem that the cart collapses to one side. .

In addition, the support means (3) is connected to be rotated with the connecting table (5) through the rotating shaft (2) for maintaining the balance, it is not possible to control whether the rotation itself.

Therefore, in order to maintain the level of the support means (3) during the movement of the cart, it is necessary to support the cart only by the force of the worker at all times, not only takes much physical strength, but also when the whole cart swings due to obstacles, Frequently, the cart collapses because it is not leveled.

In addition, the conventional balance maintenance device is not only a balance maintenance function of the cart, but also acts as a drive of the cart, but there is no separate brake device, so even if there is a slight inclination, the worker must hold the cart at all times, thereby reducing work efficiency.

The present invention has been proposed to solve the problems of the prior art as described above,

If one wheel is lifted by an obstacle in the process of moving the cart, the whole load of the cart including the balance device is always inclined to one side by maintaining the level of load and preventing the balance point of the balance device from biasing to either side. It is an object of the present invention to provide a seesaw-type balance maintaining apparatus that can maintain an upright state at any time.

It is also an object of the present invention to provide a seesaw balance maintaining apparatus that can maintain the level of the supporting means at all times even if the worker does not adjust the cart directly for the horizontal maintenance of the load including the supporting means.

In addition, by providing a means for controlling the driving of the wheel, it is an object of the present invention to provide a seesaw balance maintenance device that is easy to work on the slope.

The balance maintaining apparatus of the present invention proposed in order to achieve the above object has a basic configuration in which a connecting rod connecting the wheel and the support means is connected to the support means on which the transport means is located.

Rotating means for installing the left and right are rotated in the seesaw form in this basic configuration so that each connecting rod can be moved up and down,

It is connected to the rotating means and the supporting means and at the same time supporting the supporting means and the rotating means and at the same time characterized in that it further comprises a support means for guiding the shangdong.

In addition, the drive control means for controlling the drive of the wheel is characterized in that it is further included.

Hereinafter, an embodiment of a specific configuration and operation of the present invention will be described with reference to the configuration illustrated in the drawings.

The balance maintaining apparatus of the seesaw method of the present invention is largely composed of a supporting means 10, a supporting means 20, a rotation means 30, a connecting table 40, and a wheel 50.

The support means 10 is for connecting the cart 90 and the balance maintaining device, as shown in FIG. A connecting plate 14 for connecting 20 is provided.

Since the support means 10 is simply for connecting the balance maintaining device and the cart 90, it can be produced in a simple plate form, not in the form of such a frame. In addition, the support means 20 to be described later, without going through a separate upper structure such as the support means may be implemented in a form directly connected to the structure, such as the cart (90).

The support means 20 is for mounting other components in a state connected with the support means 10, the support 22 is fixed to the connecting plate 14 of the support means 10 is located in the center In addition, the upper and lower ends of the guide tube 24 in the form of a square tube open at both sides of the support 22 is integrally positioned.

At this time, in addition to the fixing between the support 22 and the connecting table 14 for the more stable coupling and support between the support means 20 and the support means 10 and the guide tube 24 through a separate auxiliary support 26 and Interconnect the support means 10 (see FIG. 5).

And the upper side of the support 22, the coupling hole 28 for coupling with the rotating means 30 to be described later penetrates.

The rotating means 30 has a rod shape having a predetermined length in the transverse direction and a fastening hole 32 for coupling with the support 22 is penetrated at the center thereof, and a long hole 34 having a predetermined length in the transverse direction at both ends thereof. ) Are formed respectively.

The rotation means 30 is connected to each connecting table 40 to be described later,

 The connecting table 40 is a vertical rod-shaped square rod, the lower portion is coupled to the wheel 50, the upper end insertion space 42 and the fastening hole 44 for coupling with the rotation means 30 is Formed. And the front is formed with a coupling groove 46 to which the rotation control means 60 to be described later.

In addition, a sliding member (B) such as a bearing is provided on both side surfaces of each connecting table 40 so that the connecting table 40 can be moved up and down smoothly while being inserted into the guide tube 24. The sliding member B may be provided inside the guide tube 24 in addition to the connecting table 40.

In addition to the above-described configuration, there is further provided with a rotation control means 60 and a drive control means 70 for controlling the driving of the connecting rod 40 and the driving of the wheel 50.

The rotation control means 60 is installed in a form protruding from the front surface of the guide tube 24 as shown in [6] and [7] and a space 64 is formed therein and the space A housing 62 in which a spring 66 is inserted into the 64;

The control rod 67 is inserted into the housing 62 is formed so that the control rod 67 can be coupled to the coupling groove 46 of the connecting table 40 through the guide tube 24 ( 68).

In addition, an auxiliary insertion hole 63a having a long hole shape is formed at both sides of the insertion hole 63 into which the control button 68 is inserted among the housing 62, and the outside of the housing 62 of the control button 68. Exposed part is provided with a protruding piece 69 having a length similar to the auxiliary insertion hole (63a).

The drive control means 70, that is, the brake is largely composed of an adjustment lever 72, a pressure rod 74, and an elastic means 76.

First, the elastic means 76 is coupled to the connecting ring 16 provided at one end of the lower surface of the connecting plate 14 of the supporting means 10 as shown in [8] and [9] and the other end thereof. It is connected to the control lever 72, the control lever 72 is coupled to the coupling piece 78, the intermediate point is installed on the front surface of the support 22 through the hinge 79 is centered around the hinge 79 Make it possible to rotate up and down.

And the lower end of the control lever 72 is connected to the pressure bar 74 in the form of a square tube. At this time, the pressing bar 74 is positioned so that the upper end of the wheel 50 can be pressed when the control lever 72 is rotated downward.

 Next, the assembly process of the present invention having the above configuration will be described with reference to FIG. 3.

First, the upper end of the support 22 of the support means 20 is connected to the center of the connecting plate 14 of the support means 10 by welding or the like.

Then, the rotation means 30 is positioned on the front of the support 22 so that the coupling hole 28 of the support 22 and the fastening hole 32 of the rotation means 30 are located on the same line, and have a separate rotation shaft. (C) is coupled to the rotation means 30 and the support 22 by passing through the coupling hole 28 and the fastening hole (32).

At this time, the rotation means 30 is not coupled to be fixed to the support 22, it is coupled so that both ends can be rotated up and down in the seesaw shape around the rotation axis (C).

As such, when the coupling between the support means 10 and the support means 20 and the rotation means 30 is completed, the upper end of each connection table 40 is inserted into the lower end of the guide tube 24 to penetrate.

After that, the part having the long hole 34 of the rotation means 30 is fitted into the insertion space 42 formed at the upper end of the connecting table 40, and in that state, a separate coupling rod D is connected to the connecting table 40. By passing through the fastening hole 44 and the long hole 34 of the rotation means 30 so that the rotation means 30 and each connecting table 40 is coupled.

At this time, like the connection form between the rotation means 30 and the support means 20, the connecting table 40 and the rotation means 30 are not only coupled to each other so as to be mutually rotatable, and the coupling rod D is rotated in the rotation process ( 30 is coupled to be slidable within the long hole 34.

In addition to the combination of the rotation control means 60, first inserts the control rod 67 of the control button 68 into the housing 62 through the insertion hole 63, the spring 66 located in the housing 62 Both ends of the are coupled to the housing and the control button, respectively.

In this state, as shown in the enlarged view of FIG. 6, the protruding piece 69 provided in the control button intersects the auxiliary insertion hole 63a of the housing 62 to the outer surface of the housing 62. When placed over, the control button 68 is prevented from being drawn into the insertion hole by the elastic force of the spring 66.

In this way, the combination of the present invention is completed in the form of [4] and [5].

The following will describe the operation and effects of the present invention thus combined.

First, when moving the flat ground in the state where the wheelbarrow 90 is seated on the upper portion of the support means 10, as shown in FIG. 10, the rotation means 30 is horizontal with the ground, and each connecting rod 40 Maintains the vertically extended state from the rotation means (30).

In this state, the position of the fastening rod C connecting the pivoting means 30 and the support 22 is the total balance point.

Then, if one wheel 50 is lifted up by an obstacle as shown in FIG. 11, the connecting rod 40 connected to the wheel 50 also moves upwards, and thus the rotating means connected to the connecting rod 40 ( 30) is also rotated on the basis of the rotation axis (C), the portion connected to the connecting table 40 is in a state moved upward.

At the same time, the other end of the rotation means 30 is going to move downwards, but because the other wheel is in contact with the ground, the other end of the rotation means 30 is not rotated downward, the connecting table 40 is raised By the lifting force of the support means 20 and the support 10, including the rotation means 30 is eventually lifted.

In this process, since the coupling rod D, which is a connecting medium between the pivoting means 30 and each connecting rod 40, slides along the long hole 34 of the pivoting means 30, the coupling rod D is not disturbed. Since the rising bar in the vertical direction and the opposite coupling rod also slides in the long hole, the guide tube 24 and the support 22, the rotation means 30 and the support means 10 are also smoothly lifted in the vertical direction.

Therefore, the position of the rotational axis C, which serves as the balance point, also rises in the vertical direction and does not occur to the left or right, so that the balance maintaining device can overcome the obstacle while maintaining the left and right balance.

That is, the connection table 40 is raised in the vertical direction without any interference through the connection with the rotation means 30, and thus, the other components are also lifted together in the vertical direction so that the overall balance of the balance maintaining device is increased. It will not be biased to one side.

As such, the present invention does not change the position of the balance point by the rotation means 30 which rotates in a seesaw method even if one wheel is lifted by an obstacle, so that the balance maintaining device is tilted to one side as the position of the balance point changes. The problem of the existing balancing device can be solved.

In addition, as shown in the drawing, if the height of the obstacle is assumed to be 10Cm, the one wheel and the connecting rod is raised by 10Cm, but the support means, including the support means and the rotation means is raised only about 5Cm during the rotation of the rotation means. Therefore, the supporting means is raised to about half the height of the ascending height of the wheel, thereby achieving a more stable balance.

In addition, the existing balance maintaining device is connected to the support means and the support to rotate each other through the rotation axis for the horizontal maintenance of the support means, so that the support means easily shake from side to side on the support, so that the operator always supports during the flat While there is a problem of adjusting the level of the means,

The present invention is to maintain the horizontal level of the support means 10 through the coupling between the rotation means 30 and the connecting table 40, the support means 10 and the support means 20 are fixed to each other and the auxiliary support 26 By being able to be more firmly fixed through) to prevent the support means 10 from shaking left and right on the support 22, it is possible to solve the problem of the existing balance maintaining device.

If there is no separate obstacle on the work road and it is unnecessary to maintain the balance of the cart, the shangdong of the connecting table 40 can be blocked by the rotation control means 60.

The operation process of the rotation control means 60, as shown in Figure 6, first hold the control button 68 from the outside and rotate in the direction of the arrow so that the projection piece 69 as shown in the enlarged view of [Figure 7] It can be inserted into the auxiliary insertion hole (63a) of (62).

After releasing the control button 68, the control rod 67 of the control button 68 is inserted into the coupling groove 44 formed in the connecting table 40 by the elastic force of the spring 66, and thus the connecting table 40 is The control button 68 is blocked from moving up and down.

After that, if it is necessary to move the connecting rod 40 up and down again, the control button 68 is pulled out to separate the control rod 67 from the coupling groove 44, and then the control button 68 is rotated again to protrude the piece ( By positioning 69 to intersect the auxiliary insertion hole 63a of the housing 62, the control button 68 is prevented from being pulled back into the housing 62 by the elastic force of the spring 66.

Since each connecting rod 40 is interlocked with each other, even if the rotation control means 60 is connected to only one of both connecting rods 40, the operation of the other connecting rod can be simultaneously blocked.

8 and 9 are views showing a process of controlling the driving of the wheel through the drive control means 70, while the control lever 72 and the pressure rod 74 are moved as shown in FIG. The state which is bent upward by this elastic means 76 is maintained.

In this state, when the driving of the wheel 50 is stopped, as shown in FIG. 9, when the control lever 72 is flipped in the direction of the arrow, the pressure rod 74 connected to the lower end of the control lever 72 is also flipped together. It is located between the lower end of the jersey guide tube 24 and the wheel 50 and at the same time pressing the wheel 50.

In this state, even if the user releases the handle of the control lever, the pressure bar is fixed to the lower end of the guide tube by the expansion force of the compressed wheel and is not returned to its original position by the elastic force of the elastic means 76.

Afterwards, if you want to drive the wheels again by flipping the handle so that the pressure bar is pushed out between the guide tube and the wheel by the force applied by the user to drive.

In this way, the driving of the wheel 50 is blocked by the pressure rod 74, so that the cart can be operated in a state in which the cart is placed on a slope, and the cart is moved alone in a state in which a load is loaded due to the carelessness of an operator. This can prevent the load from being damaged or accidents.

Various features of the present invention described with reference to the drawings may be variously modified and implemented by those skilled in the art, but the connecting rod may be vertically raised through the rotation of the rotation means in the process of raising one wheel of the balance maintaining apparatus by an obstacle. If it is related to the configuration to prevent the inclination of the balance keeping device to one side by the lifting force of the connecting rod at the same time, it should be determined that it belongs to the protection scope of the present invention.

As described above, the balance maintaining apparatus of the seesaw method according to the present invention,

Even if one wheel is lifted by an obstacle, the position of the balance point is not changed from side to side by the rotating means rotating in the seesaw method, so that the whole cart including the balance maintaining device can pass the obstacle stably at any time without tilting to either side. There is an advantage.

In addition, the support means is maintained horizontally through the coupling between the rotation means and the connecting rod, and the support means and the support are fixed to each other so that the support means do not rock from side to side on the support, so that the operator always supports the support means during the movement of the cart. There is an advantage that can solve the problem of the existing balance maintaining device to adjust the horizontal state of.

In addition, by controlling the driving of the wheel through the drive control means, not only can the work on the ramp smoothly, but also the cart can be moved alone to prevent the occurrence of safety accidents There is this.

Claims (8)

A support means coupled to the upper structure to support the upper structure; A rotating means connected to the supporting means so as to be rotatable and having a long hole formed at both ends thereof; Seesaw type balance maintaining device characterized in that the one end is connected so as to slide along each long hole of the rotating means and the other end is connected to the wheel is connected vertically vertically moved by the rotation of the rotating means. The method of claim 1, The upper structure is secured to the support means seesaw balance maintenance device, characterized in that consisting of the support means positioned to support the lower portion of the upper structure. The method of claim 1, The support means and the support is connected to the upper structure, Seesaw balance balance device is located on both sides of the support and is connected to each of the connecting rods consisting of a guide tube for guiding the vertical movement of the connecting rod. The method of claim 3, wherein The seesaw balance maintaining device, characterized in that the bearing is provided between each guide tube and the connecting rod. The method according to any one of claims 1 to 3, Seesaw balance maintaining apparatus further comprises a drive control means for controlling the drive of the wheel. The method of claim 5, The drive control means is a control lever installed in at least one of the support means and the support means; One end is connected to the control lever and the other end is elastic means connected to the support means or the support means; Seesaw balance balance device is connected to the control lever and moved by the operation of the control lever consisting of a pressure rod that is in contact with the wheel. The method according to any one of claims 1 to 3, Seesaw balance maintenance device further comprises a rotation control means for controlling the vertical movement of the connecting rod. The method of claim 7, wherein The rotation control means is installed in the guide tube, the insertion hole and the auxiliary insertion hole is formed in the front and the housing is provided with a space inside; A control button made of a control rod coupled to the insertion hole of the connecting rod through the housing and the guide tube through the insertion hole and a protruding piece inserted into the auxiliary insertion hole at one end of the control rod; Seesaw balancing device is installed in the space portion of the housing, characterized in that both ends are composed of elastic means coupled to the housing and the control button, respectively.

Images