KR19990015395U - Loading box structure for dump trucks - Google Patents

Abstract

The present invention relates to a dump truck loading box structure in which the loading box cover is automatically opened and closed, and is fixed to the rear of the wire according to the winding and unwinding action of the wires wound on a pair of winch drums that perform forward and reverse rotation by the forward and reverse driving of the motor. A loading box fixed to the support rod by allowing the shifting lever to move forward or backward so that the rest of the shifting rod moves forward or backward, thereby allowing the support rods hingedly connected and installed on the upper portion of each shifter to be folded and opened. It is to provide a loading box structure for a dump truck that allows the cover to open and close the loading box.

Description

Loading box structure for dump trucks

The present invention relates to a dump truck loading box structure in which the loading box cover is automatically opened and closed. The structure is simple, the installation cost is low, and the occurrence rate of failure is low, so the durability is excellent, the shock is strong, and the foreign matter is not caught in the device. This has the advantage that the incidence of failure is further lowered. The dump truck itself produced at the factory is not equipped with a special device for specially covering cargo or other items in the loading box. Therefore, the soil, sand, etc. are loaded into the loading box, and the cover of vinyl or forge is covered, and the strings, which are connected to the edge of the cover, are fastened to the hooks on the outer side of the loading box to fix the soil and sand. Or not to blow. However, this work is very cumbersome and time-consuming, and the covering condition is not clear, and there is a danger of accidents caused by the dust or sand blowing while driving, which makes the road dirty and the soil or sand that has fallen on the road. This reduces the friction between the wheels of the vehicle and the road surface, causing driving accidents. In addition, there is a problem that it is difficult to carry out the car work when the wind is severely blown or when it rains, and when driving at high speed, there are many closed stages such as the carb being blown off by the wind and being pulled out of the loading box. It was used. This conventional loading box has a fixed height. "The type of supporting rods are gathered forward and then extended to the rear, or the pipes or round rods are installed in the lengthwise direction of the upper side of the loading box, and then the hooks are suspended at both ends of the loading box cover. As the bushing serves to insert the pipe or round bar into the pipe or round bar, and the structure of the drawer pulled in the air is gathered forward and gathered back and unfolded again, connecting the carba plate to form a hinge hinged on the loading box Covering the opening of the loading box, etc., all of them are complicated structure of the power unit and the connecting means and many residual parts are high, the failure rate is high, it is unreasonable and very difficult to repair and difficult to replace parts Uneconomic closures have been exposed and have not been put to practical use. It is inconvenient to go through two or three steps in operation, and in particular, when loading the gravel, stone, sand, etc. using the fork-lane, the bucket of the fork-lane hits the device easily. Also, there was a disadvantage that it could not get the advantage of using effectively, and if the soil, sand, gravel, etc. gets stuck in the device, the structure would be difficult to operate or the parts would be damaged. In addition, the conventional apparatus has problems such as complicated structure, difficulty in installation, and large installation time, and thus, the unit price of the apparatus cannot be neglected. We have already filed a utility model by devising a cargo carrier loading box to solve the above disadvantages and problems, It is filed in Utility Model Application Nos. 94-34640 and 95-7878, of which 94-34640 are currently registered, while the present invention is further improved and improved as a whole from the applicant's prior applications. And the structure is simpler, as well as the manufacturing cost is cheaper.

Accordingly, the object of the present invention is to provide a loading box structure for a van, which solves the above-mentioned shortcomings and problems and disadvantages resulting from the conventional loading box.

In order to achieve the above object, the present invention uses a wire having a good tensile strength and shearing force, strong against impact, and flexible, as a rail, and a separately provided wire as a power transmission means, and stops by intercepting a load. The drive unit is formed of a reduction motor and a simple winch drum, and characterized in that large configuration consisting of a support rod that is carried by a moving spring and a tension spring for supporting the respective support rods.

1 is a perspective view showing the configuration of a dump truck loading box according to an embodiment of the present invention.

2 is a right side view showing the state of use of the present invention.

3 is a right side view showing the state of use of the present invention.

4, 5 is a reference diagram showing the operating state of the back of the support bar of the present invention.

Figure 6 is a reference diagram showing the structure of the support bar and the shifter at the rear of the present invention.

7 is a cross-sectional view taken along line 1-1 of FIG.

* Explanation of symbols for main parts of the drawings

10: loading box 11: reinforcement

12.13: Wire tensioning device 14: Roller holder

15: roller 16: clasp

17: reinforcement 18: guide roller

19: Clasp 20: Reduced Motor

21: chain gear 30: winch drum

31: chain gear 40: wire for rail

50: power transmission wire 60.60a.70: shifting iron

61.61a.62.62a.71.72: Tube 73: Spring latch

80: latch 90: hook

100.110.120.130: support rod 101.111.121: pipe

102.112.122: Connecting rod 131: Brace

132: spring latch 133: bend

140: rod 150: tension spring

160: U-bolt 161: nut

200: loading box cover 300: latch

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used for the same components, even if displayed on different drawings. And, in describing the present invention, if a detailed description of the related known function or configuration may obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Weld the two front edges so that the roller 18 and the reinforcement bracket 17 with the clasp 19 are opposed to each other, and after that, the clamp 300 is welded separately, and the wire tension control device 12 and the screw can move the screw rod back and forth by turning the nut. The roller tensioner 13 with the roller 15 assembled to the roller holder 14 welded to the end of the rod and the reinforcement 11 equipped with the latch 16 are welded so as to face the two rear edges, and then the front side of the rear reinforcement 11 is inclined. A welder 10 welded so that the welded clamp 80 and the retaining rod 90 face each other;

A drive unit formed by assembling the reduction motor 20 having the chain gear 21 assembled on the front surface of the loading box and a winch drum 30 having the chain gear 31 assembled on the left and right sides thereof;

Left and right symmetrical rail wires supporting the shifting pins through the tubulars 61, 62, 61a, 62a, 71, 72 of the latch 60, 60a, 70 while being stiffened by the wire tension control device 12, the latch 19 and the latch 16 40 lessons,

The winch drum 30, the guide roller 18, and the roller 15 of the wire elasticity adjusting device 13 are hooked to the winch drum 30 within a predetermined distance, and the rearward latch 70 and the U-bolt 160 and the nut 161 are repeated. And the left and right symmetrical power transmission wires 50 which are fixed by the forward and backward movement of the shifting mechanism 70,

Connecting rods 102, 112 and 122 assembled to the respective tubular bodies 101, 111 and 121, and support rods 100, 110 and 120 allowing free cutting

It is largely composed of a tension spring 150 that grips the rearmost hinge 70 from left and right.

On the other hand, the movable clasp 70 has the tubular bodies 71 and 72 on the top and bottom, and the spring clasp 73 is welded to the outer side downward. In addition, the support rod 130 is welded to face the spring latch 132 to the outside so as to be able to hold the tension spring 50 between the spring latch 73 of the mobile clasp 70, by assembling a rod 140, the bent portion of the support rod 130 below 133 The middle part was allowed to weld. That is, the support rod 130 is independently configured to be connected to the shifting 70. The support rod 131 is welded to the inner side of the support rod 130 so that the support rod 131 contacts the upper surface of the loading box when the support rod 130 is folded and opened to maintain the upright angle and the open angle of the support rod 130. At this time, the tension spring 150 is intended to hold firmly in place by pulling toward the shifter 70 when the support rod 130 is upright or open. The stop rod 90 stops the bent portion 133 of the support rod 130 from being reversed any more than the position of the stop rod 90. The stop rod 80 is caught by the lower end of the bent portion 133 when the support rod 130 moves forward and backwards. As a result, the support rod 130 serves as a guide to easily fall to the front or back, the detailed action will be described later.

Next, the detailed operation of the present invention.

1 is a view showing a completed state of the present invention is assembled with each of the components intact. In addition, in the state of FIG. 1, the supporting rods are opened to smoothly spread the loading box cover 200 to cover the upper opening of the loading box. In this situation, if the loading box cover is to be positioned forward, the operation switch provided on the dashboard of the vehicle interior should be operated. Naturally, the operation switch serves to connect or control the vehicle battery power mounted in the vehicle to the reduction motor, and the electrical technique thereof is a very simple known technique and is not separately shown in the drawings. The operation switch adopts a 2-way method, and when one side is pressed, the deceleration motor rotates forward, and when the other side is pressed, it is preferable to configure the reduction motor to reverse rotation. The operation switch has a letter such as forward or reverse. It is better to protrude or to make the letters such as forward or backward on the appropriate part of the switch body to be embossed or engraved to prevent malfunction. In addition, the deceleration motor used a board in which an appropriate circuit technology was applied to automatically stop operation when an overload was detected. Electrical techniques applied to the substrates are also of known level. On the other hand, when the forward button is pressed in the operation switch, the reduction motor 20 operates immediately to rotate the winch drum 30. On the winch drum, the power transmission wires 50 are wound in the right and left screws, respectively, so that the winch drums are the same. Even in the direction of rotation, the upper line of the power transmission wire 50 is wound into the winch drum and the lower line is released. In other words, the power transmission wire is wound around the winch drum in an infinitely orbital manner through the roller 15 and the guide roller 18, so that one side is wound and the other side is released, so only the position of one point on the power transmission wire is moved back and forth. This is no problem in operation. When the upper side of the power transmission wire 50 begins to wind into the winch drum, the rearward rearward hinge 70 is advanced. The reason for this is that the shifter 70 is fixed to the power transmission wire 50 by the U-bolt 160 and the nut 161. Of course, the rest of the rest 60, 60a is not fixed to the power transmission wire 50. When the shifter 70 starts to move forward, it pushes the connecting rod 122 located in front of it, and the connecting rod 122 pushes the supporting rod 120 again. That is, 122 and 120 naturally maintained the shape of the longest triangle at the base. Folded upwards, they gather together and eventually gather up to an almost upright state. In other words, it will take the form of a triangle whose base is kept a few centimeters away. At this time, the shifter 70 is in contact with the shifter 60a in front of it. In this state, when the shifter 70 is further advanced, the shifter 60a is pushed by the connecting rod 112 by the same method as described above, and eventually comes into contact with the forward shifter 60. Therefore, when only this state is stopped, the shifting rods 60, 60a, and 70 are in contact with each other, and the supporting rods 110, 120 and the connecting rods 112, 122 are almost upright as described above. As the shifter 70 continues to move forward, the front shifter 60 will eventually be pushed forward until it is pushed forward by the shifter 70 to hit the catch 300. However, the deceleration motor 20 continues to operate and automatically detects the overload caused by the shifter 70 not moving forward and stops automatically. Therefore, each of the supporting rods are completely gathered and folded forward, and this state is the same as that of FIG. Next, when the supporting rods folded as shown in FIG. 3 are unfolded as shown in FIGS. 1 and 2 to cover the upper opening of the loading box, the reverse switch of the operation switch is pressed. At the same time as the switching, the decelerating motor reverses, so that the winch drum also reverses so that the power transmission wire 50 is reversed from the forward direction, that is, the upper line of the power transmission wire 50 is reversed. Thus the shifter 70 is retracted with the rest of shifters 60 and 60a in place. When the shifter 70 continues to retract and pulls the connecting rod 122, the connecting rod 122 pulls the indicator rod 120, and when the distance begins to increase some distance, the shifting shaft 60a starts to reverse, and according to the same technique, the front shifting lever 60 degrees is pulled back. To start. By these tips, the supporting rods are unfolded as shown in FIG. 1 so that the loading box cover 200 covers the upper opening of the loading box. As mentioned earlier, the lower portion of the support rod 130 is formed with a bent portion 133 and the bent portion 133 is fixed to the shifter 70 by the rod 140. Of course, the rod 140 is assembled with the shifter 70 by a split pin, etc., so that the rod 140 rotates while being assembled to the shifter 70. Therefore, the support rod 130 is capable of changing the angle while drawing the locus of the fan shape with the rod 140 as the center of rotation. 4 shows a state in which the support rod 130 is backed apart, and when the shifting lever 70 moves forward in this state, the lower end of the bent portion 133 hits the latch 80. Therefore, when the shifter 70 is moved further, the rod 140 is rotated to the front as the center of rotation. At this time, the tension spring 150 serves to pull more quickly and easily inclined to fall down since the support rod 130 is inclined slightly forward in the upright state. Even in this state, the shifter 70 will continue to move forward, so that the lower end of the bent portion 133 will fully move out of the latch 80 and move forward with the shifter 70. At this time, the brace 131 is in contact with the upper surface of the stacking box so that the support rod 130 is no longer inclined by pressure and is folded as shown in FIG. 3. Again, as described above, when the shifting rod 70 reverses to open the supporting rods, and the shifting rod 70 continues to move backward, the lower end of the bent portion 133 of the supporting rod 13, which was inclined forward, hits the latch 80. Therefore, since the support rod 130 does not reverse, the rod 140 starts to be reared as if it rotates with the rotation center. This is illustrated in detail in FIG. 4, where the lower end of the bent portion 133 is not swayed by the clasp 80 and is gradually erected, and immediately after being out of the vertical state, it is quickly reared by the restoring force of the tension spring 150. From then on, it will retract with the shifter 70, and soon the hook 90 will be caught by the middle of the bend 133. Therefore, it can no longer reverse and this state causes overload of the reduction motor, so the deceleration motor that detects the overload will stop immediately. Therefore, the support rod 130 is in a state of being reared as shown in the figure, and the remaining support rods are stopped in the open state. In this case, the support 131 of the support rod 130 is in contact with the top surface of the loading box so that the support rod 130 is no longer bent backwards. Afterwards, the tips for folding and opening the support rods are the same as described above. Each shifter is assembled to the rail wire 40 through a tube, so there is no problem in the forward and backward movement, and the tension of the rail wire 40 and the power transmission wire 50 are always optimal by the wire tension control devices 12 and 13. Can be adjusted. On the other hand, the lower end of the front support rod 100 is assembled while being inserted into both sides of the loading box so that the rest of the support rods can be reversed indefinitely and unfolded. Keep it. Due to its structural characteristics, each wire is caught in foreign matter, sand, gravel, etc., or it is not easily attached, and it is flexible so that there are no defects in the movement of the shifters, and it is easily broken or damaged even when an impact is applied from the outside. Few. In addition, the pipe bodies of the moving irons are assembled to maintain a relatively good tolerance on the wire for the rail, so that foreign matters are not easily caught in the pipes, and even if foreign matters are stuck or attached, the moving irons move easily. It is detached. In addition, the winch drum has a simple structure, which is unlikely to cause a failure and there is no problem in operation. In addition, the rearmost support rod 130 plays an important role of firmly and elastically folding and unfolding the loading box cover which is fixed by appropriate fixing means when moving forward and folding together with each supporting rod.

As described above, the present invention uses a wire having a good tensile force and shear force, strong impact resistance, and a flexible feature as a rail, and a separately provided wire as a power transmission means, and a driving unit formed of a reduction motor and a winch drum. And, it is largely composed of movable brackets supporting each support rod, the structure is simple, and the installation cost is low, and complicated configuration is excluded, so the occurrence rate of failure is low, and the durability is excellent, It is strong, and there is an advantage such that foreign matter is not caught in the device. In addition, because the installation time is short due to the structural characteristics, it is possible to install a large amount per unit time, which is very economical due to the characteristics of the dump truck business, which is directly connected with time and income. In addition, the present invention allows the moving iron to move on the wire for the rail, and the power transmission wire is wound and released on the winch drum, so that the quiet operation is possible, and the noise is hardly generated. There is an advantage that the product quality is enhanced.

Claims (1)

Weld the two front edges so that the roller 18 and the reinforcement bracket 17 with the clasp 19 are opposed to each other, and after that, the clamp 300 is welded separately, and the wire tension control device 12 and the screw can move the screw rod back and forth by turning the nut. The roller tensioner 13 with the roller 15 assembled to the roller holder 14 welded to the end of the rod and the reinforcement 11 equipped with the latch 16 are welded so as to face the two rear edges, and then the front side of the rear reinforcement 11 is inclined. A welder 10 welded so that the welded clamp 80 and the retaining rod 90 face each other; A drive unit formed by assembling the reduction motor 20 having the chain gear 21 assembled on the front surface of the loading box and a winch drum 30 having the chain gear 31 assembled on the left and right sides thereof; Left and right symmetrical rail wires supporting the shifting pins through the tubulars 61, 62, 61a, 62a, 71, 72 of the latch 60, 60a, 70 while being stiffened by the wire tension control device 12, the latch 19 and the latch 16 40 lessons, The winch drum 30, the guide roller 18, and the roller 15 of the wire elasticity adjusting device 13 are hooked to the winch drum 30 within a predetermined distance, and the rearward latch 70 and the U-bolt 160 and the nut 161 are repeated. And the left and right symmetrical power transmission wires 50 which are fixed by the forward and backward movement of the shifting mechanism 70, Connecting rods 102, 112 and 122 assembled to the respective tubular bodies 101, 111 and 121, and support rods 100, 110 and 120 allowing free cutting It is largely composed of a tension spring 150 that grips the rearmost hinge 70 from the left and right; The winch drum or forward rotation is performed in accordance with the forward and backward rotation of the reduction motor, and at the same time, the power transmission wire is wound and unwinded, and the rear rear clasp 70 fixed to the power transmission wire by the U-bolt and nut is rail As the rods move forward and backward, the supporting rods and the shifters can be gathered forward and folded back to open again, and the deceleration motor detects an overload and stops automatically. Stacker structure for dump truck.