KR102114740B1 - Safety device for ready-mixed concrete truck - Google Patents

Abstract

The present invention relates to a safety device for a ready-mixed concrete truck. The safety device for a ready-mixed concrete truck comprises a footplate installed on a vehicle body of a ready-mixed concrete truck to climb towards a mixing drum and descend from the mixing drum, and a guardrail arranged on the footplate. The safety device further comprises: a door frame rotatably arranged on the guardrail; an auxiliary footplate arranged on the door frame to be overlapped with the footplate or withdrawn from the footplate to be spread; a plurality of latches rotatably arranged on the auxiliary footplate to be coupled to the footplate to fix the door frame in an opened state or a closed state, respectively; a plurality of locking blocks rotatably arranged on the auxiliary footplate to press one side thereof by coming in contact with each latch to fix the latch while locking the latch on the footplate; a torsion spring arranged on the plurality of latches and the plurality of locking blocks, respectively to provide an elastic force to rotate the latches and the locking blocks corresponding to the latches in opposite directions to prevent the latches from being opened; and a lever rotatably coupled to the door frame and connected to the plurality of locking blocks by a cable to rotate the locking blocks and then unlock the latches.

Description

Safety device for ready-mixed concrete truck

The present invention relates to a safety device for a remicon vehicle, and more particularly, to a safety device for a remicon vehicle which is installed on a mixing drum of a remicon vehicle to be opened and closed while opening and closing the stairs while being fixed in an open and closed state. .

In general, a ready-mixed concrete is a concrete mixture that is made in a ready-mixed factory and transported by a ready-mixed vehicle to a built-in site to form a concrete skeleton of a building at a construction site, and immediately released by a concrete pump car or the like.

Referring to FIG. 1 of the present invention, a conventional ready-mixed vehicle for transporting such a ready-mixed concrete includes a body body forming a skeleton of the ready-mixed vehicle and a mixing drum rotatably installed on the top of the body.

In addition, a discharge chute for guiding the ready-mixed concrete when the ready-mixed concrete is discharged from the mixing drum is provided on the body of the lower body of the mixing drum.

After the discharge of the ready-mixed concrete from the mixing drum is completed, water is sprayed so that the remaining ready-mixed concrete on the inside of the mixing drum and the passage of the discharge chute are not fixed, and the remaining ready mixed concrete is washed.

At this time, the worker goes up on the body for smooth cleaning. To this end, a step is installed on the body.

That is, the stairs installed on the body of the vehicle body include a plurality of scaffolds that the operator can step on and climb, and railings that are installed for the safety of workers who step on and off the scaffold.

Accordingly, the operator can effectively wash the remaining ready-mixed concrete by spraying water into the mixing drum at a position higher than the mixing drum by holding the railing on the body and stepping on the footrest.

However, the conventional stairs installed in the ready-mixed vehicle cannot be widely installed on the body. In other words, when the stairs are installed wide for smooth passage of the worker, the stairs are unnecessarily projected out of the body and projected to the outside, and as a result, a large space is required when moving the ready-mixed vehicle. As it is induced, the installation of the stairs is limited to a very limited space so as not to escape the body.

Accordingly, since the railing installed on the outer side of the scaffold has more spatial restrictions than the scaffold due to its position, the railing cannot be installed to cover all the scaffolds, and is limitedly installed only on the side of the scaffold provided at the highest position. do.

Accordingly, since the handrail is provided only on the footboard at the highest position among the various footrests, the movement of the stepping on and off the footing is completed by the worker who steps on and off the footing because the movement is inconvenient due to the small space and the small space when the worker moves up and down the footing. There is a discomfort that comes down in the same direction as it climbs later, and in this process, there is a problem that a worker frequently falls to the ground due to a worker's swoop.

Republic of Korea Utility Model No. 20-0191858 Republic of Korea Utility Model No. 20-0460467

Therefore, the present invention was devised to solve the problems of the prior art as described above, and is rotatably installed on the railing of a staircase that can be moved up and down on the mixing drum of a ready-mixed vehicle to open and close the footrest of the stairs and open and close the footrest. An object of the present invention is to provide a safety device for a ready-mixed vehicle that is to be fixedly provided in a preformed state.

A safety device for a remicon vehicle according to the present invention for achieving the above object is installed on a body of a remicon vehicle, and is provided so as to be raised and lowered to the mixing drum side, and a safety device for a remicon vehicle including a railing provided on the scaffold As, the safety device is a door frame that is rotatably provided on the railing; An auxiliary scaffold provided on the door frame and overlapping with the scaffold or being drawn out and unfolded from the scaffold; A plurality of latches rotatably provided on the auxiliary scaffold to fix the door frames in an open or closed state as they are coupled to the scaffold; A plurality of locking blocks rotatably provided on the auxiliary scaffold and fixing each latch in a locked state to the scaffold as one side thereof is pressed against each latch; A torsion spring provided on each of the plurality of latches and the plurality of locking blocks to provide elastic force to rotate the latch and the corresponding locking block in opposite directions to prevent opening of the latch; It is rotatably coupled to the door frame and connected to a plurality of locking blocks and cables to rotate the locking block to unlock the latch; may include.

In addition, the lever is provided with a connecting protrusion connected to the plurality of locking blocks and a cable while protruding through the door frame, and a first elastic member is provided between the connecting protrusion and the door frame to return the rotated lever to its original position, When the lever is rotated, the locking block may be rotated by the cable.

In addition, locking feet are coupled to and locked by a plurality of latches according to the rotational direction of the door frame, and a plurality of latches are formed with locking grooves for receiving and locking the locking pins, while both latches face the locking grooves. It is provided to be rotated to the contrary, as the door frame is rotated, a plurality of latches are selectively coupled and fixed to the locking pin and may be provided to fix the door frame in an opened/closed state.

In addition, a second elastic member may be provided to connect both locking blocks to return the rotated locking block to its original position to prevent the latch from opening.

According to the safety device for a ready-mixed vehicle according to the present invention, a door frame is rotatably installed on a railing of a staircase that can be moved up and down on a mixing drum of a ready-mixed vehicle to open and close the footrest of a stair while fixing the doorframe while the footrest is opened and closed By being provided, it is possible to maximize the safety of the worker who steps on and off the steps of the stairs, and accordingly, there is an advantage of safely protecting the worker from a fall accident.

1 is a view showing a ready-mixed vehicle equipped with a door frame according to the present invention.
Figure 2 is an enlarged view showing the installation state of the door frame according to the present invention, Figure 2a is a front configuration, Figure 2b is a rear configuration.
3 is a configuration diagram of a door frame according to the present invention, FIG. 3A is a plan view, and FIG. 3B is a bottom view.
4 is a plan view of the structure when the door frame according to the present invention is closed.
5 is a plan view of a plane when the door frame according to the present invention is opened.
Figure 6 is a view showing the locking state of the latch configured in the door frame according to the present invention, Figure 6a is a view of the latch is locked in the locking pin, Figure 6b is a latch locking groove is detachable from the locking pin Figure 6c is a view of a state in which the door frame is rotated, Figure 6d is a view of a state in which the latch on the opposite side is locked to the locking pin.
7 is a view showing the operating structure of the latch and the locking block according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Terms used in the present invention are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of the user or operator, and thus, definitions of these terms are consistent with the technical matters of the present invention. And should be interpreted as a concept.

In addition, the embodiments of the present invention are not intended to limit the scope of the present invention, but are merely illustrative of the components presented in the claims of the present invention, and are included in the technical idea throughout the specification of the present invention and of the claims. It is an embodiment including a component that can be substituted as an equivalent in the component.

In addition, the optional terms in the following embodiments are used to distinguish one component from other components, and the component is not limited by the terms.

Accordingly, in describing the present invention, detailed descriptions of related well-known technologies that may unnecessarily obscure the subject matter of the present invention are omitted.

1 to 7 are views showing a ready-mixed vehicle according to the present invention and a mixing drum, a scaffold, a railing, a door frame, and the like.

Prior to explaining the present invention, a ready-mixed vehicle and a mixing drum constituted by the same are the same as those of the prior art, so that the same reference numerals are assigned to them, and redundant description thereof will be omitted.

The safety device 100 for a ready-mixed vehicle according to the present invention includes a mixing drum 30 and a mixing drum 30 rotatably installed on the body body 10 of the ready-mixed vehicle 1, as shown in FIG. It is installed on the body body 10 located on the side, a plurality of scaffolds 20 that can be raised and lowered on the mixing drum 30, and is installed on the side of the scaffold 20 to protect the worker who climbs and descends the scaffold 20 It includes a railing (21).

In addition, the door frame 110 is rotatably coupled to the railing 21 as shown in FIGS. 2A and 2B to be provided to open and close the footrest 20.

3A and 3B, the door frames 110 are connected to a plurality of vertical frames 111 spaced apart at regular intervals, and both vertical frames 111 in an orthogonal direction. It includes a plurality of horizontal frames 112.

At this time, the horizontal frame 112, when the door frame 110 is rotated toward the mixing drum 30 to close the footrest 20, the door frame 110 is a peripheral structure, that is, the body body 10 and the mixing drum 30 ) While avoiding interference with the configuration of the foot plate 20 is formed to be closed so as to cover the closed, in particular, the horizontal frame 112 is a circular arc protruding from the center of the outer side (opposite side of the mixing drum 30) It is preferably formed to be bent in a shape.

And, of both vertical frames 111, the inner vertical frame 111 close to the railing 21 is rotatably coupled to the railing 21 via the hinge bracket 120, which will be described later, and the outer vertical frame on the opposite side. In 111, a plate-shaped cable holder 113 for supporting and fixing the cables 150 and 160 to be described later is provided to protrude toward the inner vertical frame 111.

In addition, an auxiliary footrest 130 protruding toward the footrest 20 of the vehicle body 10 is formed protrudingly in the horizontal frame 112 of the second stage located in the lower part of the plurality of horizontal frames 112, and this auxiliary footrest ( 130 is provided to overlap with each other by varying the height of the footrest 20 of the vehicle body 10. In this embodiment, the auxiliary scaffold 130 is illustrated as an example provided only in the lower two-stage horizontal frame 112, but is not limited thereto or may be freely provided.

In addition, a plurality of cable holders 131 for supporting and fixing the cables 150 and 160 to be described later are provided on the lower surface of the auxiliary footrest 130 as described above.

In addition, a guide for preventing the cable 150, 160 from being detached by fixing the cable 150, 160 in the horizontal frame 112 with the auxiliary foot 130 provided with the cable holder 131 as described above. The bracket 114 is bent.

On the other hand, between the inner vertical frame 111 and the handrail 21, the hinge bracket 120 rotatably coupling the door frame 110 to the handrail 21, as shown in Figure 3a, the inner vertical frame 111 It includes a fixed portion 121 fixedly coupled to the, and the rotating portion 122 is rotatably coupled to the fixed portion 121 while being fixed to the railing (21). In this way, the hinge bracket 120 including the fixing part 121 and the rotating part 122 is configured with a hinge-like structure.

In particular, the rotating part 122 is provided with a shock bolt 123 that is confined in a state surrounding the inner vertical frame 111 and that both ends thereof are fastened and fixed as a nut through the rotating part 122. There is an advantage in that the door frame 110 can be moved up and down in a state constrained to the railing 21 by the shock bolts 123 to easily adjust the position.

And, the outer vertical frame 111 is provided with a lever 140, the lever 140 is hinged to the outer vertical frame 111 is provided to be rotatable about the hinge portion 141, the lever 140 ) Is formed in the central portion of the inner surface of the connection protrusion 142 penetrating the outside vertical frame 111 and protruding upward to the outside of the vertical frame 111, and the connection protrusion 142 includes a plurality of locking blocks 190 to be described later. It is provided to be connected to the 200 and the cable 150, 160.

In addition, the connecting protrusion 142 is provided with an elastic member (hereinafter referred to as "first spring") in addition to the cable 150 and 160, and the first spring 143 is provided with a tension coil spring, and one end thereof is connected with the connecting protrusion. It is connected to (142) and the other end is provided is connected to the cable holder 113 provided in the outer vertical frame (111).

At this time, the connecting protrusion 142 protrudes upward from the inner surface of the lever 140 to the outside, and when the lever 140 rotates (rotates toward the outer vertical frame 111), the connecting protrusion 142 has an outer vertical frame. It is rotated to the (111) side and is provided to stand.

Accordingly, when the lever 140 is pressed and rotated to the outer vertical frame 111, the connecting protrusion 142 is rotated clockwise about the hinge 141, like the lever 140, based on FIG. Standing in parallel with the vertical frame 111, the first spring 143 connected to the connecting protrusion 142 is tensioned, and the wires 151 and 161 of the cable 150 and 160 are pulled and the locking block 190 is pulled. The latches 170 and 180 are unlocked by rotating the 200. Then, when the external force depressing the lever 140 is removed, the lever 140 and the connecting protrusion 142 are rotated counterclockwise by the tensioned first spring 143 to return to the original position, and the cable 150 ( The wires 151 and 161 of 160 are returned to the original position by the second spring 193, which will be described later, to return the locking block 190 and 200 to the original position.

And, the cable connecting the connecting protrusion 142 of the lever 140 and the locking block 190, 200 to be described later is provided as an open cable 150 and a closed cable 160, respectively, the cable 150, 160 ) Both ends of the wires 151 and 161 provided in the sheath (hereinafter referred to as "cable") are directly connected to the connecting protrusions 142 and the locking blocks 190 and 200 of the lever 140.

At this time, the cable 150, 160 has both ends of the cable holder 113 provided on the outer vertical frame 111 of the door frame 110 and the cable holder 131 provided on the lower surface of the auxiliary footrest 130 The wires 151 and 161, which are coupled to and fixed to each of the cables 150 and 160, are drawn to both ends of the cables 150, respectively, and are connected to the connecting protrusions 142 and the locking blocks 190 and 200 of the lever 140, respectively. And fixedly provided.

Thus, when the lever 140 is rotated, the wires 151 and 161 are moved in and out of the cables 150 and 160 fixed to both cable holders 113 and 131, and the locking blocks 190 and 200 are moved in and out. ) Is rotated.

On the other hand, a plurality of fixing blocks 210 and 220 are fixedly provided on the lower surface of the auxiliary footrest 130 as described above, and the locking pins 230 to be described later are inserted into and out of each of the fixing blocks 210 and 220. Grooves 211 and 221 are formed, and insertion grooves 211 and 221 formed in each of the fixing blocks 210 and 220 are disposed to face each other.

In addition, the plurality of fixing blocks 210 and 220 as described above is an open fixing block 210 fixed to the inner end of the auxiliary footrest 130 adjacent to the hinge bracket 120, and an auxiliary adjacent to the door frame 110. It is provided with a closed fixing block 220 fixed to the outer end of the footrest 130.

As illustrated in FIG. 7, in each of the fixed blocks 210 and 220, a plurality of latches 170 and 180 and a plurality of locking blocks 190 and 200 are rotatably provided, respectively.

Among the plurality of latches 170 and 180, the outer end of the auxiliary footboard 130, that is, the side close to the door frame 110, is provided with a closed latch 180, and the inner end of the auxiliary footboard 130, that is, the hinge bracket 120 An open latch 170 is provided on the side adjacent to. The locking pin 230 is fixed to the front end of the footrest 20 corresponding to the open latch 170 and the close latch 180.

The plurality of latches 170 and 180 is provided with hinge portions 171 and 181 rotatably coupled to each fixed block 210 and 220, and the hinge portions 171 and 181 A first torsion spring (173) (183) is provided to provide an elastic force for rotating the latches (170, 180) in an opening direction (counterclockwise based on FIG. 7).

Then, the locking grooves 172 and 182 formed in a “Ｕ” shape are formed at the other ends of the latches 170 and 180 opposite to the hinges 171 and 181, and the locking grooves 172 and 182 ) Is provided on the insertion grooves 211 and 221 of the fixing blocks 210 and 220.

In particular, with reference to FIG. 7, when the latches 170 and 180 are rotated counterclockwise by the first torsion springs 173 and 183, the locking grooves 172 and 182 of the latches 170 and 180 ) When the inlet is positioned toward the inlet side of the insertion grooves 211 and 221 of the fixing blocks 210 and 220 and is opened (opened), and the latches 170 and 180 are rotated clockwise by the locking pin 230 The entrances of the latching grooves 172 and 182 of the latches 170 and 180 are positioned toward the upper surface of the insertion grooves 211 and 221 of the fixing blocks 210 and 220 to be locked (locked).

Therefore, as the door frame 110 is rotated forward or reverse in the railing 21, the locking grooves 172 and 182 of the open latch 170 or the close latch 180 are fixedly coupled to the locking pin 230. The door frames 110 are opened and closed, that is, the door frames 110 are fixed in an open or closed state, respectively.

Meanwhile, the plurality of locking blocks 190 and 200 are provided to correspond to the plurality of latches 170 and 180, and the open locking block 190 is provided on the open latch 170 at the inner end of the auxiliary foot 130. It is provided, the closing latch 180 of the outer end of the auxiliary foot 130 is provided with a closing locking block 200, respectively.

The plurality of locking blocks 190 and 200 is provided with hinge portions 191 and 201 rotatably coupled to each fixing block 210 and 220 opposite the insertion grooves 211 and 221, and the hinge The branches 191 and 201 are provided with second torsion springs 192 and 202 that provide elastic force to rotate the locking blocks 190 and 200 clockwise based on FIG. 7.

In addition, the rear ends of the locking blocks 190 and 200 opposite the hinge parts 191 and 201 are provided to protrude outside the fixing blocks 210 and 220, and at the rear ends of both locking blocks 190 and 200 An elastic member (hereinafter referred to as a "second spring") is connected and provided, and the second spring 193 is provided as a tension coil spring, and has the same function as the second torsion springs 192 and 202, thereby providing a second torsion. The operation of the springs 192 and 202 is complemented.

Accordingly, when the wires 151 and 161 of the cable 150 and 160 are pulled by pressing the lever 140, the locking blocks 190 and 200 are rotated counterclockwise based on FIG. 7. As the locking blocks 190 and 200 that are rotated are separated from the latches 170 and 180 that were being pressed, the latches 170 and 180 rotate counterclockwise by the first torsion springs 173 and 183. While being opened, the locking frame 230 is inserted into the locking grooves 172 and 182 of the latches 170 and 180 by the rotational force closing the door frame 110, and the latches 170 and 180 are clocked. When rotated in the direction, the locking block 190, 200 is rapidly rotated clockwise by the restoring force of the compressed second torsion spring 192, 202 and the tensioned second spring 193, and the latch 170, ( By pressing the lower end of the 180 (end of the opposite side of the engaging groove 172, 182) to fix the latch 170, 180, rotation of the latch 170, 180, that is, rotation in the open direction is blocked.

At this time, a pressing groove or a pressing jaw in which the locking blocks 190 and 200 are locked may be formed at the lower ends of the latches 170 and 180 for firm pressing of the locking blocks 190 and 200. In addition, the arrow direction in FIG. 7 indicates the rotational direction of the latch 170, 180 and the locking block 190, 200 by the restoring force of each torsion spring 173, 183, 192, 202.

In addition, the locking pin 230 is formed of a cylinder having a circular cross-section, when the locking pin 230 contacts the opening end of the locking groove 172, 182, the locking pin 230 and the locking groove 172 (( As the 182 slips, the locking pin 230 can be easily inserted into the locking grooves 172 and 182 of the latches 170 and 180 to be locked.

In addition to this, the opening ends of the locking grooves 172 and 182, which the locking pins 230 contact, can be rounded to facilitate the engagement of the locking pins 230 and the locking grooves 172 and 182, and the hinge. Between the fixing part 121 and the rotating part 122 of the bracket 120, a torsion spring for rotating the rotating part 122 in the fixing part 121 may be provided.

The operation relationship of the safety device for a ready-mixed vehicle according to the present invention as described above will be described.

4 and 6A, as shown in FIGS. 4 and 6A, when the remicon vehicle 1 is moved or when the mixing drum 30 is operated, the door frame 110 is closed by covering the footrest 20 formed on the body 10. State.

That is, as shown in Figure 6a, the locking pin 230 of the footrest 20 is inserted into the locking groove 182 of the close latch 180 provided at the outer end of the auxiliary footrest 130 so that the latch 180 is locked. The groove 182 and the insertion groove 221 of the closed fixing block 220 are fixed in a constrained state.

In this state, when the door frame 110 is to be pulled open without pressing the lever 140, the close locking block 200 corresponding to the lower end of the close latch 180 is locked in a pressurized state so that the close latch ( Since 180) is not rotated, the door frame 110 is not opened and is kept in a closed state.

On the other hand, when you want to open the closed door frame 110 as described above, when the lever 140 is pressed and rotated toward the outer vertical frame 111 of the door frame 110, the lever 140 is rotated together with the rotation of the lever 140. As the connecting protrusions 142 of the cable are rotated in the clockwise direction, the wires 151 and 161 of the cable 150 and 160 are pulled, and accordingly, as shown in FIG. 6B, both locking blocks 190 and 200 are removed. 2 While compressing the torsion springs (192, 202) and simultaneously pulling the second spring (193), the tip of the locking block (190) (200) in contact with the latches (170, 180) is inside the auxiliary footrest (130). Will rotate in the direction.

Then, both the locking blocks 190 and 200 are rotated while being separated from the pressing latches 170 and 180, and at the same time, the first torsion springs 173 and 183 that are provided and compressed in the latches 170 and 180 are compressed. ), both latches 170 and 180 are rotated by the restoring force, so that the latching grooves 172 and 182 of the latches 170 and 180 are inserted into the fixing blocks 210 and 220, 211 and 221. It is positioned towards the opening end and opens.

Therefore, the locking of the locking pin 230, which was inserted and locked in the locking groove 182 of the closing latch 180, is released, and at the same time, the closing latch 180 is elastically separated from the locking pin 230 and spaced apart. As in the door frame 110 is unlocked and opened.

Thereafter, when the external force that pressed the lever 140 is removed, the lever 140 is rotated and returned to the original position by the restoring force of the first spring 143, and the second torsion springs 192, 202 and the second spring ( Due to the restoring force of 193), the restoring force to return to the original position acts on the locking blocks 190 and 200.

In this state, when the door frame 110 is rotated and fully opened, the open latch 170 provided on the inner end of the auxiliary footrest 130 is fixedly coupled to the locking pin 230.

That is, the locking pin 230 of the footrest 20 is inserted into the locking groove 172 of the open latch 170 provided in the open fixing block 210 by the rotating door frame 110, as shown in FIG. 6C. In this state, as the door frame 110 is further rotated, the open latch 170 is rotated and inserted into the open fixing block 210 by the locking pin 230, wherein the locking pin 230 is shown in FIG. 6D. As shown, the locking groove 172 of the open latch 170 and the insertion groove 211 of the open fixing block 210 are fixed in a constrained state.

In particular, when the open latch 170 is rotated and inserted into the open fixing block 210 by the locking pin 230, the corresponding open locking block 190 is the second torsion spring (192) (202) and the second As it is rotated clockwise based on FIG. 7 by the restoring force by the spring 193, it is pressed in a locked state by being in contact with the lower end of the open latch 170.

Therefore, the open latch 170 which is rotated and locked does not open unless the lever 140 is pressed to release the lock, so that the door frame 110 can be firmly maintained in an open state.

Thus, the operator can go up to the mixing drum 30 side through the scaffold 20 opened by the open door frame 110 as described above, even after descending in the direction ascended by the narrow scaffold 20 after work. Since the door frame 110 is firmly fixed and opened in a state where the footrest 20 is wrapped, it is possible to safely protect an operator from a fall accident.

Then, to close the opened door frame 110, as described above, by pressing the lever 140 again toward the outer vertical frame 111, the locking groove 172 of the open latch 170 and the locking pin 230 When the door frame 110 is closed in the state in which the locking is released, the locking pin 230 is inserted into and fixed to the locking groove 182 of the close latch 180 as shown in FIG. 4 to maintain the closed state securely. It becomes possible.

Although the present invention has been described in detail through specific examples, the present invention is specifically for describing the present invention, and the present invention is not limited to this, and by those skilled in the art within the technical spirit of the present invention. It is clear that modification and improvement are possible.

All simple modifications or changes of the present invention belong to the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

1: Remicon vehicle 10: Body body
20: scaffolding 21: handrail
30: mixing drum 100: safety device
110: door frame 111: vertical frame
112: Horizontal frame 113: Cable holder
114: guide bracket 120: hinge bracket
121: fixing portion 122: rotating portion
123: shock bolt 130: auxiliary scaffolding
131: cable holder 140: lever
141: hinge part 142: connecting protrusion
143: first spring 150,160: cable
151,161: wire 170,180: latch
171,181: Hinge 172,182: Hanging groove
173,183: 1st Torsion Spring 190,200: Locking Block
191,201: hinge part 192,202: 2nd torsion spring
193: second spring 210,220: fixed block
211,221: Insertion groove 230: Locking pin

Claims (4)

As a safety device for a ready-mixed vehicle that is installed on the body of the ready-mixed vehicle and is provided so that it can be raised and lowered to the mixing drum side, and a railing provided on the stepped body,
The safety device includes a door frame rotatably provided on the railing;
An auxiliary scaffold provided on the door frame and overlapping with the scaffold or being drawn out and unfolded from the scaffold;
A plurality of latches rotatably provided on the auxiliary scaffold to fix the door frames in an open or closed state as they are coupled to the scaffold;
A plurality of locking blocks rotatably provided on the auxiliary scaffold and fixing each latch in a locked state to the scaffold as one side thereof is pressed against each latch;
A torsion spring provided on each of the plurality of latches and the plurality of locking blocks to provide elastic force to rotate the latch and the corresponding locking block in opposite directions to prevent opening of the latch;
Remicon vehicle safety device comprising a; rotatably coupled to the door frame and connected with a plurality of locking blocks and cables to rotate the locking block to unlock the latch.
The method according to claim 1,
The lever protrudes through the door frame and is provided with connecting protrusions connected as a plurality of locking blocks and cables,
A first elastic member is provided between the connecting protrusion and the door frame to return the rotated lever to its original position,
Safety device for remicon vehicles in which the locking block is rotated by a cable when the lever is rotated.
The method according to claim 2,
The scaffold is provided with a locking pin that is coupled to and locked by a plurality of latches according to the rotation direction of the door frame,
A plurality of latches are formed with locking grooves for receiving and locking locking pins, while both latches are provided to be rotated oppositely so that the locking grooves face each other.
As the door frame rotates, a plurality of latches are selectively coupled and fixed to the locking pin, and the remicon vehicle safety device fixes the door frame in an open/closed state.
The method according to claim 3,
A safety device for a ready-mixed vehicle equipped with a second elastic member that connects both locking blocks to return the rotated locking block to its original position to prevent the latch from opening.

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