KR102204453B1 - Moving cart with accident prevention features - Google Patents

Abstract

The present invention relates to a cart for cargo transport having an accident prevention function. The cart for cargo transport having an accident prevention function comprises: a main body unit on which cargo is loaded; a wheel unit including a pair of rotary wheels installed on a lower portion of the back of the main body unit and installed to be rotated in the horizontal direction of the main body unit, and a pair of fixed wheels installed on a lower portion of the front of the main body unit; a handle unit including a pair of vertical bars extended upward from both sides of the upper surface of the back of the main body unit; a pair of braking units which are installed on the back of the respective fixed wheels on one side the main body unit, and normally maintain a braking state of the respective fixed wheels; and a pair of braking canceling units including a pair of lever members wherein one side thereof is rotatably installed on one side of the respective vertical bar and the other side thereof is extended to the back of the respective vertical bar, and a power transfer unit moving the respective braking unit in a direction of canceling the braking state of the respective fixed wheel when the respective lever member is operated, wherein one end thereof is coupled to the other end of the respective lever member and the other end thereof is coupled to one side of the respective braking unit. According to the present invention, the cart can run only when a worker operates the lever members while both hands grip the lever members to cancel the braking state of the fixed wheels to prevent accidents which can be caused by carelessness when the worker grips and runs the cart with one hand.

Description

Moving cart with accident prevention features}

The present invention relates to a cargo transport truck, and more particularly, a cargo that provides a structure that enables operation although the operator must release the braking state of each fixed wheel by operating each lever member while holding both hands. It relates to a transport cart.

In general, in various factories, commercial buildings, or loading and unloading places, trucks for transporting cargo are used to transport cargo.

1 shows a conventional freight transport cart.

Referring to FIG. 1, a conventional freight transport cart includes a cart 1 having wheels 2 to load and transport cargo, and the cart 1 to move the cart to a desired location while pushing the cart 1 It consists of a carrying handle (3) that is fixedly installed on (1).

However, in the conventional freight transport cart as described above, the cart 1 moves along the slope due to the weight of the cart 1 and the weight of the loaded cargo in an inclined place, so be sure to only in the place where the cart 1 is not inclined. There is a problem in that the bogie 1 must be stopped by supporting stones or the like so that the wheel 2 provided under the bogie 1 does not move so that the bogie 1 does not move.

On the other hand, the freight truck as above is also used for loading and transporting containers containing chemicals at the site handling chemicals, and safety accidents such as the container overturning occur while transporting the containers containing these chemicals. If it does, it poses a risk that can cause serious personal injury.

Therefore, in order to prevent the occurrence of safety accidents at the sites where the containers containing the above chemicals are transported, safety rules to minimize the occurrence of safety accidents during transportation are regularly educated to workers.

Among the safety rules during the above-described transport operation, the operator is required to first grasp and operate the cargo transport truck with both hands, but in actual work sites, workers still hold and operate the cargo transport truck with one hand.

For this reason, safety accidents are frequently occurring due to the carelessness of workers during the transport work using a freight truck.

Korean Patent Registration No. 10-1850293 discloses a'cargo transportation vehicle equipped with a brake unit'.

Korea Patent Registration No. 10-1850293 is a polygonal frame, a handle portion rotatably coupled to one side of the frame, a lever coupled to the upper portion of the handle portion, and rotatably coupled to one side of the frame, and are arranged at a predetermined distance from the wheel. It comprises a pad member and a cable connecting the lever to one side of the pad member, and when an operator pulls the cable by operating the lever, the pad member moves and contacts the wheel to brake the wheel.

The Korean Patent No. 10-1850293 has the advantage that the wheel can be braked by the operator's operation, but the state in which the brake of the wheel is released before the operator manipulates the lever is the conventional freight transport truck shown in FIG. Since it is the same, there is still a problem in that the bogie must be stopped by supporting stones on one side of the wheel to load the cargo.

In addition, Korean Patent No. 10-1850293 discloses that the braking state is released in normal times, so the operator can operate while holding the handle with one hand as in the prior art, so safety accidents that may occur due to the operator's one-handed grip operation are There are still problems that cannot be prevented.

In addition, Korean Patent Registration No. 10-1850293 is connected by a cable with a small diameter between the lever and the pad member, so especially when used in a workplace that handles chemicals, the cable is damaged by chemicals and is easily broken. Can be.

Therefore, it is urgent to develop a truck for transporting cargo that has a structure that can induce an operator to operate a truck for transporting cargo while holding both hands, and that can prevent cable damage even at sites handling chemicals.

Korean Patent Registration No. 10-1850293

The present invention was conceived to solve the above problems, and an object of the present invention is to enable operation only by releasing the braking state of each fixed wheel by manipulating each lever member in a state where the operator grips both hands. It is to provide a freight truck that can prevent safety accidents.

According to the present invention for achieving the above object, a pair of rotating wheels installed in the main body in which cargo is loaded and the rear lower part of the main body part, and rotatably installed in the horizontal direction of the main body part, and the front lower part of the main body part It is installed at the rear of each of the fixed wheels of the wheel part including a pair of fixed wheels installed in the handle part including a pair of vertical bars extending upwardly from both sides of the rear upper surface of the main body and one side of the main body part , A pair of braking parts for maintaining the braking state of each fixed wheel in normal operation, and a pair of lever members having one side rotatably installed on one side of each vertical bar and the other end extending to the rear of each vertical bar. , Each one end is coupled to the other end of each lever member, each other end is coupled to one side of each brake, and each brake unit is in the direction in which the braking state of each fixed wheel is released when each lever member is operated. There is provided a freight transport vehicle having a safety accident prevention function, characterized in that it comprises a pair of brake release units including a power transmission unit for moving the.

Here, the braking part is installed between the bracket and the pad member and the bracket installed at the rear of each of the fixed wheels on one side of the main body, the pad member disposed between the bracket and the fixed wheel, and the fixed wheel on the pad member It characterized in that it comprises an elastic member for applying an elastic force in the direction.

In addition, the power transmission unit is rotatably installed in front of the first power transmission unit among the first power transmission unit and one side of the body unit, the first power transmission means coupled to one end of the lever member and the other end extending downward, A first rotational piece to which the other end of the first power transmission means is rotatably coupled to one side of the outer circumferential surface is protruded, and a power conversion shaft having a second rotational piece protruding from the other side of the outer circumferential surface and one end is coupled to one side of the pad member and the other end It characterized in that it comprises a second power transmission means rotatably coupled to one side of the second rotating piece.

In addition, the second power transmission means includes a first connecting member having one side rotatably coupled to one side of the second rotating piece, and an extension member having one end coupled to one side of the pad member and the other end extending outward of the bracket. And a second connecting member having one side rotatably coupled to the other end of the extension member, and a screw member whose one end is screwed to the other side of the first connecting member, and the other end is screwed to the other side of the second connecting member. Including, wherein when the screw member rotates forward or backward, the first connection member and the second connection member move in a direction close to or spaced apart from each other.

According to the present invention as described above, it is possible to operate only when the operator operates each lever member while holding both hands and releases the braking state applied to each fixed wheel.Therefore, it is caused by carelessness during one-handed grip operation by the operator. Possible safety accidents can be prevented in advance.

Figure 1 shows a conventional freight transport truck.
Figure 2 is a perspective view as viewed from the top of a freight transport truck having a safety accident prevention function according to an embodiment of the present invention.
Figure 3 is a perspective view of a cargo transport truck having a safety accident prevention function according to an embodiment of the present invention viewed from the bottom.
Figure 4 is a plan view of a freight transport truck having a safety accident prevention function according to an embodiment of the present invention.
5 is a cross-sectional view taken along AA′ of FIG.
6 is a perspective view schematically showing a brake unit and a brake release unit according to an embodiment of the present invention.
7A and 7B are diagrams for explaining the operation of a freight transport vehicle having a safety accident prevention function according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings. It should be noted that the same elements in the drawings are indicated by the same reference numerals wherever possible. In addition, detailed descriptions of known functions and configurations that may unnecessarily obscure the subject matter of the invention will be omitted.

FIG. 2 is a perspective view of a cargo transport truck having a safety accident prevention function according to an embodiment of the present invention, as viewed from the top, and FIG. 3 is a view showing a cargo transportation truck having a safety accident prevention function according to an embodiment of the present invention. Viewed perspective view, Figure 4 is a plan view of a cargo transport truck having a safety accident prevention function according to an embodiment of the present invention, Figure 5 is a cross-sectional view AA' of Figure 4, Figure 6 is according to an embodiment of the present invention It is a perspective view schematically showing a brake part and a brake release part.

Referring to Figures 2 to 6, the cargo transport vehicle having a safety accident prevention function according to an embodiment of the present invention (1) is for transporting a drum container in which chemicals are particularly accommodated, and the main body 10, the wheel It includes a part 20, a handle part 30, a brake part 40, and a brake release part 50.

The main body 10 is formed in a plate-shaped rectangular parallelepiped shape, provides a loading area for cargo through the upper surface, and a wheel part 20, a handle part 30, a brake part 40 and a brake release part 50 to be described later. ) Installation area is provided.

The wheel unit 20 includes a pair of rotating wheels 21 installed at the rear and lower portions of the body unit 10 and a pair of fixed wheels 22 installed at the front and lower portions of the body unit 10.

Here, a pair of rotating wheels 21 are installed to be rotatable in a horizontal direction on the main body 10.

That is, in the present invention, as a pair of rotating wheels 21 is installed at the rear of the main body 10, the operator does not exert a great force even in a state where heavy cargo such as a drum container is loaded on the upper surface of the main body 10. Without, it is possible to easily change the direction of the main body 10.

The handle part 30 includes a vertical bar 31, a horizontal support bar 32, and a grip bar 33.

The vertical bar 31 is a hollow tube and is formed extending upward from both sides of the rear upper surface of the main body 10, and provides an installation area for the brake release part 50 to be described later.

The vertical bar 31 has an upper end bent rearward to provide a region in which one side of the lever member 51 to be described later is rotatably coupled.

The horizontal support bar (32) is for supporting a pair of vertical bars (31), and both ends are coupled to the vertical bar (31) and can stably support the side of the drum container loaded on the upper surface of the main body (10). It is formed to be rounded to the rear.

The gripping bar 33 is formed in a'c' shape in which both ends are bent, and both ends formed bent are coupled to both ends of the vertical bar 31, and are installed on the upper part of the horizontal support bar 32 to be described later. The other end of the lever member 51 of 50) is gripped together with the lever member 51 while the other end of the lever member 51 is moved downward, so that the operator can stably grip the lever member 51.

The braking part 40 is individually installed on each of the pair of fixed wheels 22 so that each fixed wheel 22 maintains a braking state, and the bracket 41, the pad member 42, and the elastic member ( 43).

The bracket 41 is formed in a'C' shape in which both ends are vertically bent, and both ends formed bent are coupled to both sides of each fixed wheel 22, and are disposed at the rear of each fixed wheel 22.

The pad member 42 has an inner circumferential surface having the same curvature as the outer circumferential surface of the fixed wheel 22, and the inner circumferential surface is formed of a plate-shaped member in a shape surrounding the outer circumferential surface of the fixed wheel 22.

The elastic member 43 is installed between the bracket 41 and the pad member 42, and by applying an elastic force to the pad member 42 in the direction of the fixing wheel 22, each of the fixed wheels 22 maintains a braking state. It plays a role to do.

The brake releasing unit 50 allows the braking unit 40 that maintains the braking state of each of the fixed wheels 22 to release the braking state of each of the fixed wheels 22, and the lever member 51, power transmission Includes part 52.

The lever member 51 is installed to be inserted into the upper end of the vertical bar 31 as a rod shape with an approximately open lower portion, and is disposed perpendicular to the vertical bar 31, and one side of the center is one side of the upper end of the vertical bar 31 Is rotatably coupled to.

In addition, the lever member 51 has the other end of each vertical bar 31 along the formation direction of the gripping bar 33 so that the operator can easily grip the lever member 51 together with the gripping bar 33 during operation. Doedoe extending to the rear of ), it is formed bent in the inward direction.

The lever member 51 serves to vertically move the first power transmission bar 52 as the other end is moved in the vertical direction by the operator.

The power transmission unit 52 includes a first power transmission means 52a, a power conversion shaft 52b, and a second power transmission means 52c.

The first power transmission means (52a) has a circular rod shape and is disposed inside each vertical bar (31), one end is coupled to one end of the lever member (51) and the other end is formed extending downward.

This first power transmission means (52a) serves to rotate the power conversion shaft (52b) forward or reverse while vertically moving by the lever member (51).

In the present embodiment, the first power transmission means 52a is illustrated in a circular rod structure as an example, but the first power transmission means 52a of the present invention is not limited thereto, and a cable may be used.

The power conversion shaft (52b) is rotatably installed in front of the first power transmission means (52a) among one side of the body portion (10), and the other end of the first power transmission means (52a) is rotatably coupled to one side of the outer circumferential surface. The first rotating piece 52ba protrudes.

Further, on the other side of the outer peripheral surface, a second rotating piece 52bb is formed to protrude downward.

This power conversion shaft (52b) serves to move the second power transmission means (52c) in the horizontal direction while rotating forward or reverse.

The second power transmission means 52c has one end coupled to one side of the pad member 42 and the other end rotatably coupled to one side of the second rotating piece 52bb, so that the power conversion shaft 52b rotates forward or backward. In this case, the pad member 42 for braking each of the fixed wheels 22 is separated from the fixed wheels 22 or serves to restore to its original position, and the first connecting member 52ca and the extension member 52cb , And a second connection member (52cc) and a screw member (52cd).

The first connecting member 52ca is formed in a'U' shape in which both ends are bent, and one side of the bent ends is rotatably coupled to one side of the second rotating piece 52bb.

The extension member 52cb is formed in a circular rod shape, one end is coupled to one side of the pad member 42 and the other end is formed to extend outward of the bracket 41.

The second connecting member 52cc is formed in a'U' shape in which both ends are bent, and one side of the bent ends is rotatably coupled to the other end of the extension member 52cb.

The screw member 52cd is formed in a circular rod shape, one end is screwed to the other side of the first connecting member 52ca, and the other end is screwed to the other side of the second connecting member 52cc.

This screw member (52cd) by moving the first connecting member (52ca) and the second connecting member (52cc) in a direction that is close to or spaced apart from each other when rotating in a forward or reverse direction, the pad member 42 and the second rotating piece ( 52bb).

In the present embodiment, the second power transmission means (52c) is shown as an example consisting of a first connecting member (52ca), an extension member (52cb), a second connecting member (52cc) and a screw member (52cd), but the present invention The second power transmission means 52c of is not limited thereto, and a cable may be used.

7A and 7B are views for explaining the operation of a freight transport vehicle having a safety accident prevention function according to an embodiment of the present invention.

First, looking at the braking release operation of the cargo transport truck 1 having a safety accident prevention function according to an embodiment of the present invention, as shown in Figure 7a, in a state in which the operator grips each lever member 51 When moving downward, one end of the lever member 51 rises, and the first power transmission means 52a connected to one end of the lever member 51 moves upward.

Then, the first rotating piece 52ba connected to the lower end of the first power transmission means 52a is moved upward so that the power conversion shaft 52b rotates in a clockwise direction.

Accordingly, the second rotating piece 52bb protruding downward of the power conversion shaft 52b is moved rearward to move the first connecting member 52ca of the second power transmission means 52c to the rear, and the pad member As the extension member 52cb connected to the 42 moves rearward, the inner circumferential surface of the pad member 42 is spaced apart from the outer circumferential surface of the fixed wheel 22 to release the braking state.

Next, looking at the braking operation of the present invention, as shown in Figure 7b, when the operator releases the gripping state of the lever member 51, the inner circumferential surface of the pad member 42 is fixed due to the elastic restoring force of the elastic member 43 While in close contact with the outer circumferential surface of the wheel 22, it is switched to the braking state.

In addition, as the extension member 52cb of the second power transmission means 52c is moved forward by the pad member 42, the first connecting member 52ca and the first rotating piece of the second power transmission means 52c The 52ba moves forward, which rotates the power conversion shaft 52b counterclockwise to move the first rotating piece 52ba downward.

Accordingly, the lower end of the first power transmission means 52a is moved downward, and one end of the lever member 51 connected to the upper end of the first power transmission means 52a is moved downward, and the other end of the lever member 51 Returns to the original position.

As described above, the truck 1 for transporting cargo having a safety accident prevention function according to an embodiment of the present invention is maintained in a braking state in normal times, and the lever member is in a state where the operator grips each lever member 51. As the braking of each of the fixed wheels 22 is released only by operating the 51, it is possible to prevent safety accidents that may occur due to carelessness during the one-handed grip operation by the operator.

In addition, the truck 1 for transporting cargo according to the present invention maintains the braking state in normal times, so when the worker loads the cargo, it is a cumbersome task in which the worker has to maintain the braking state of the truck by supporting stones on the wheels of the truck. Not required.

In addition, the freight transport vehicle 1 according to the present invention has a bar structure, not a thin cable, which has a connection structure between the lever member 51 of the brake release part 50 and the pad member 42 of the brake part 40 Accordingly, even if it is used in a field handling chemicals, there is no problem that the connection structure between the lever member 51 and the pad member 42 is damaged by chemicals or the like and is easily broken.

Although the present invention has been described in connection with the above preferred embodiments, it is possible to make various modifications or variations without departing from the gist and scope of the invention. Accordingly, the appended claims will cover such modifications or variations that fall within the gist of the present invention.

1: Cargo truck with safety accident prevention function
10: main body 20: wheel
21: rotating wheel 22: fixed wheel
30: handle portion 31: vertical bar
32: horizontal support bar 33: grip bar
40: braking part 41: bracket
42: pad member 43: elastic member
50: brake release part 51: lever member
52: power transmission unit
52a: first power transmission bar 52b: power conversion shaft
52ba: East Episode 1 52bb: East Episode 2
52c: second power transmission bar 52ca: first connecting member
52cb: extension member 52cc: second connection member
52cd: screw member

Claims (4)

A body portion on which cargo is loaded;
A wheel portion installed at a rear lower portion of the body portion and including a pair of rotating wheels installed to be rotatable in a horizontal direction of the body portion, and a pair of fixed wheels installed in a front lower portion of the body portion;
A handle including a pair of vertical bars extending upward from both sides of the rear upper surface of the main body;
A pair of braking units installed at the rear of each of the fixed wheels on one side of the main body and maintaining a braking state of each of the fixed wheels during normal operation;
A pair of lever members with one side rotatably installed on one side of each vertical bar and the other end extending to the rear of each vertical bar, and one end of each of which is coupled to the other end of each lever member and the other end It characterized in that it comprises a pair of brake release units including a power transmission unit that is coupled to one side of each brake unit and moves each brake unit in a direction in which the braking state of each fixed wheel is released when the respective lever member is operated. Cargo truck that has the function of preventing safety accidents. The method of claim 1,
The braking part
A bracket installed at the rear of each of the fixed wheels on one side of the main body;
A pad member disposed between the bracket and the fixed wheel;
Cargo transport vehicle having a safety accident prevention function, characterized in that it comprises an elastic member installed between the bracket and the pad member and applying an elastic force to the pad member in the direction of the fixed wheel. The method of claim 2,
The power transmission unit
A first power transmission means having one end coupled to one end of the lever member and the other end extending downwardly;
A first rotating piece is rotatably installed in front of the first power transmission means among one side of the main body and is rotatably coupled to the other end of the first power transmission means on one side of the outer circumferential surface, and a second rotation is formed on the other side of the outer circumferential surface. A power conversion shaft with a side protruding;
Cargo transport truck having a safety accident prevention function, characterized in that it comprises a second power transmission means coupled to one end of the pad member and the other end rotatably coupled to one side of the second rotating piece. The method of claim 3,
The second power transmission means
A first connecting member whose one side is rotatably coupled to one side of the second rotating piece;
An extension member having one end portion coupled to one side of the pad member and the other end portion extending outward of the bracket;
A second connection member having one side rotatably coupled to the other end of the extension member;
One end is screwed to the other side of the first connecting member, the other end includes a screw member screwed to the other side of the second connecting member,
When the screw member rotates forward or backward, the first connection member and the second connection member move in a direction close to each other or spaced apart from each other.

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