CN219687148U - Automatic door opening device of self-unloading freight container - Google Patents

Abstract

An automatic door opening device of a self-unloading freight container belongs to the field of transportation means, and is arranged on a backward-moving backward-tilting self-unloading freight container, and the freight container is loaded on a skeleton car and comprises a lifting device, a container body, a back door and a pushing device; the lifting device is arranged on the lifting frame and connected with the lifting frame, and the lifting frame is arranged on the skeleton car and is hung with the skeleton car; the box body is a cavity body with an upper opening of a rear door; the lifting frame is arranged on the lifting frame and is connected with the lifting frame in a hanging or buckling way; the rear door is arranged at the rear end of the box body and is communicated with the inner cavity of the box body; the upper end of the rear door plate is hinged with the box body and can swing around the upper edge of the rear door plate; the automatic unloading device can utilize the translational kinetic energy of the box body when in translational unloading, realize the opening and closing of the rear door, facilitate unloading, simplify the operation procedure and improve the working efficiency.

Description

Automatic door opening device of self-unloading freight container

Technical Field

The utility model belongs to the field of transportation means, and particularly relates to an automatic door opening device for a backward-moving backward-tilting self-unloading freight container.

Background

The freight container is a common transport tool in the transportation industry, and is widely applied to bulk transportation in particular; when bulk cargo is transported by adopting a cargo box, in order to improve the transportation efficiency, people invent the cargo box with a self-unloading function, and the principle is that a hydraulic cylinder is adopted to lift one side of the cargo box, and unloading is carried out on one side or the rear side of the cargo box; for the freight boxes for unloading at the back, because the general freight boxes are cuboid, namely the front-back length is far longer than the left-right width, the lifting height of the front end of the freight box is far higher and the lifting force is far greater for the freight boxes for unloading at the back, so people invent the freight boxes to translate backwards for a certain distance and then lift, thus reducing the lifting weight, lowering the lifting height and creating favorable conditions for unloading the freight boxes from the back; however, when unloading, the opening of the rear door needs to be performed manually, which causes a lot of inconvenience to the unloading.

Disclosure of Invention

Aiming at the problems existing in the prior backward tilting self-unloading freight container during unloading, the utility model provides an automatic opening of a back door by utilizing the power of backward movement of the freight container, and the specific technical scheme is that the automatic opening device of the self-unloading freight container is characterized in that: the automatic door opening device is arranged on a backward-moving backward-tilting self-unloading freight container which is loaded on a skeleton car and comprises a lifting device, a box body, a back door and a flat pushing device; the lifting device is arranged on the lifting frame and connected with the lifting frame, and the lifting frame is arranged on the skeleton car and is hung with the skeleton car; the box body is a cavity body with an upper opening of a rear door; the lifting frame is arranged on the lifting frame and is connected with the lifting frame in a hanging or buckling way; the rear door is arranged at the rear end of the box body and is communicated with the inner cavity of the box body; the upper end of the rear door plate is hinged with the box body and can swing around the upper edge of the rear door plate; the horizontal pushing device is arranged on the lifting frame, a moving part of the horizontal pushing device, namely a piston rod of the hydraulic oil cylinder is connected with the box body, and the hydraulic oil cylinder body is connected with the lifting frame; the automatic door opening device comprises a sliding control block, a transmission mechanism, a shuttle block guide rail, a rear door connecting piece and a sliding block guide rail; the sliding control block is arranged on the sliding block guide rail, is embedded with the sliding block guide rail and can move on the sliding block guide rail; the sliding control block is arranged at the tail part of the box body and is positioned near the cross beam at the tail part of the framework vehicle, and when the box body translates backwards on the framework vehicle, the framework vehicle or the lifting frame can prevent the sliding control block from moving along with the box body, so that the sliding control block and the sliding block guide rail move relatively; the sliding control block is also connected with a transmission mechanism, and can drive the shuttle block to move through the transmission mechanism so as to control the opening and closing of the rear door plate; the transmission mechanism is arranged at the tail end of the box body and is positioned near the rear door, one end of the transmission mechanism is connected with the sliding control block, and the other end of the transmission mechanism is connected with the shuttle block and can drive the shuttle block to move; the transmission mechanism is in rope transmission, chain transmission, link mechanism transmission, gear rack transmission, pneumatic transmission or hydraulic transmission; the shuttle block is arranged on the shuttle block guide rail, is buckled with the shuttle block guide rail and can move along the shuttle block guide rail on the shuttle block guide rail; the shuttle block is provided with a connecting device of the back door connecting piece, and the connecting device can hinge the back door connecting piece with the shuttle block; the shuttle block is also provided with a driven wheel mounting structure which can be firmly connected with the driven wheel and the traction rope; the shuttle block guide rail is arranged at the tail part of the box body, is adjacent to the rear door and is a linear guide rail, and can ensure that the shuttle block smoothly moves on the shuttle block guide rail; the rear door connecting piece is arranged between the rear door plate and the shuttle block and is in rigid connection or flexible connection, and when the shuttle block moves up and down, the rear door connecting piece can be driven to move so as to drive the rear door plate to open or close; the sliding block guide rail is arranged on the box body and is positioned on the side edge of the lower portion of the box body, and the sliding block guide rail is connected with the box body, so that the sliding control block can move smoothly on the sliding block guide rail.

Furthermore, the two automatic door opening devices are symmetrically arranged at two sides of the rear door.

Further, a positioning device is arranged on the sliding control block, and can be embedded on the skeleton car or the lifting frame to keep the sliding control block fixed relative to the skeleton car or the lifting frame.

Further, the transmission mechanism is in rope transmission and comprises a traction wheel, a traction rope, a guide wheel, a switching wheel and a driven wheel; the traction wheel is arranged near the sliding control block and is contacted with one end of the traction rope; the traction wheel is fixedly connected with the lower part of the box body and does not move along with the sliding control block; the traction rope is a flexible rope or chain, one end of the traction rope is connected with the sliding control block, the other end of the traction rope is connected with the shuttle block through a driven wheel, and the middle part of the traction rope bypasses the guide wheel and the switching wheel; the guide wheel is arranged on the box body and is positioned at the upper end near the rear door at the tail part of the box body, so that the movement direction of the traction rope can be changed, and the guide wheel can rotate; the transfer wheel is arranged at the tail part of the box body and is positioned above the shuttle block, so that the traction rope can bypass the periphery of the transfer wheel, and the transfer wheel is convenient to connect with the shuttle block; the driven wheel is arranged on the shuttle block, connected with the shuttle block and connected with the traction rope.

Further, the hauling rope is a steel wire rope, a fabric rope, a transmission chain or an anchor chain.

Advantageous effects

The utility model has the beneficial effects that the translational kinetic energy of the box body can be utilized when the box body is horizontally moved for unloading, so that the opening and closing of the rear door are realized, the unloading is facilitated, the operation procedure is simplified, and the working efficiency is improved.

Drawings

Figure 1 is a schematic view of the overall structure of the cargo box discharge state of the present utility model

Fig. 2 is a schematic structural view of an automatic door opener according to the present utility model

1. The frame car, 2, lifting device, 3, box, 4, rear door panel, 5, automatic door opening device, 51, sliding control block, 51A, working position of sliding control block, 52, traction wheel, 53, guide wheel, 54, transfer wheel, 55, shuttle block, 56, rear door connector, 57, traction rope, 58 and sliding block guide rail.

Detailed Description

For better illustrating the technical solution of the present utility model, referring to fig. 1 and 2, a sliding block of a pneumatic sliding table commonly used in the industry with a locating pin on one side is selected as a sliding control block 51, a matched sliding base is selected as a commercial paired commodity of sliding block guide rails 58, the length of the sliding block guide rails 58 matched with the translation distance of the box 3 is selected, the sliding block guide rails 58 are installed on the box 3 and are located at the side edge of the lower part of the box 3, so that the movement of the sliding control block 51 is conveniently transmitted to the rear door plate 4 through a transmission mechanism to realize the opening and closing of the rear door plate 4; in this example, taking rope transmission as a transmission mechanism as an example, a commercially available pulley which is provided with a groove at the periphery, a bearing at the inside and a mounting shaft is used as a traction wheel 52, a guide wheel 53 and a switching wheel 54 respectively; the traction wheel 52 is arranged on the box body 3, is near the original position of the sliding control block 51, is positioned behind the position where the traction rope 57 is connected with the sliding control block 51, and is positioned above the traction rope 57, namely, the traction rope 57 bypasses from the lower part of the traction wheel 52, is fixedly connected with the box body 3 and can rotate on the box body 3; the guide wheel 53 is installed on the box body 3, and the upper part of the box body 3 positioned above the traction wheel 52 near the rear door of the box body 3 is fixedly connected with the box body 3 and can rotate on the box body 3; in this example, the switching wheel 54 is mounted on the box 3, has the same height as the guide wheel 53 and is positioned above the shuttle block 55, and is fixedly connected with the box 3 to be capable of rotating on the box 3; in the embodiment, a rectangular guide rail which is common in the industry is selected as a shuttle block guide rail, the shuttle block guide rail is arranged on a post at the side edge of a rear door of the box body 3 according to a method and a mode and is fixedly connected with the post, a section steel with a door-shaped section is selected, a certain length is cut, the length is matched with the length of the shuttle block guide rail, the shuttle block 55 is ensured to have enough movement travel on the shuttle block guide rail as the shuttle block 55, the shuttle block 55 is buckled on the shuttle block guide rail, a driven wheel is arranged on the shuttle block 55, and a traction rope connecting structure can be directly arranged on the shuttle block 55 by omitting the driven wheel so as to connect one end of a traction rope 57 with the shuttle block 55; the connecting structure of the back door connecting piece 56 is arranged on the shuttle block 55, in the example, a lifting lug structure which is common in the industry is selected as the connecting structure of the back door connecting piece 56, a strip steel plate with holes at two ends is selected as the back door connecting piece 56, two ends of the back door connecting piece 56 are respectively connected with the shuttle block 55 and the back door plate 4 through pin shafts, and the opening position and the opening degree of the back door plate 4 are determined by adjusting the length and the installation position of the back door connecting piece 56; in this example, a traction wire rope commonly used in the industry is selected as the traction rope 57, one end of the traction rope 57 is fixedly connected with the sliding control block 51, and the traction rope bypasses from the lower part of the traction wheel 52, and then bypasses from the upper parts of the guide wheel 53 and the switching wheel 54 and is fixedly connected with the shuttle block 55, thus completing the implementation of the utility model.

When the device is applied, the box body 3 moves in parallel to the rear of the skeleton car 1 along the lifting frame under the thrust action of the horizontal pushing oil cylinder, and the front, back, left and right directions of the box body are taken as the reference of the running direction of the car; when the sliding control block 51 moves to a set position, the sliding control block 51 is blocked by the lifting frame or the skeleton car 1, does not move along with the box body 3 any more, but slides relatively along the sliding block guide rail 58 on the box body 3, at the moment, the traction rope 57 arranged on the sliding control block 51 moves along with the sliding control block 51, namely, the traction wheel 52, the guide wheel 53 and the transfer wheel 54 change directions, the traction shuttle block 55 moves upwards, the movement of the shuttle block 55 drives the rear door plate 4 to push away by the rear door connecting piece 56, so that the rear door plate 4 swings around the hinging position at the top of the rear door plate 4, the lower part opens, bulk cargo can be unloaded from the opening, and in order to realize the smooth and steady opening of the door, two automatic door opening devices 5 are symmetrically arranged on two side surfaces of the box body 3; when unloading is completed, the box body 3 is reset forwards along with the horizontal pushing oil cylinder, the sliding control block 51 is separated from a compression state of the lifting frame or the skeleton car 1, and the shuttle block 55 is pushed to move downwards through the rear door connecting piece 56 under the action of the dead weight of the rear door plate, so that the sliding control block 51 is pulled to reset through the pulling rope 57, and one working cycle is completed; the automatic door opening function of the backward tilting self-unloading freight container is completed by repeating the steps.

Claims (5)

1. An automatic door opening device of a self-unloading freight container is characterized in that: the automatic door opening device is arranged on a backward-moving backward-tilting self-unloading freight container which is loaded on a skeleton car and comprises a lifting device, a box body, a back door and a flat pushing device; the lifting device is arranged on the lifting frame and connected with the lifting frame, and the lifting frame is arranged on the skeleton car and is hung with the skeleton car; the box body is a cavity body with an upper opening of a rear door; the lifting frame is arranged on the lifting frame and is connected with the lifting frame in a hanging or buckling way; the rear door is arranged at the rear end of the box body and is communicated with the inner cavity of the box body; the upper end of the rear door plate is hinged with the box body and can swing around the upper edge of the rear door plate; the horizontal pushing device is arranged on the lifting frame, a moving part of the horizontal pushing device, namely a piston rod of the hydraulic oil cylinder is connected with the box body, and the hydraulic oil cylinder body is connected with the lifting frame; the automatic door opening device comprises a sliding control block, a transmission mechanism, a shuttle block guide rail, a rear door connecting piece and a sliding block guide rail; the sliding control block is arranged on the sliding block guide rail, is embedded with the sliding block guide rail and can move on the sliding block guide rail; the sliding control block is arranged at the tail part of the box body and is positioned near the cross beam at the tail part of the framework vehicle, and when the box body translates backwards on the framework vehicle, the framework vehicle or the lifting frame can prevent the sliding control block from moving along with the box body, so that the sliding control block and the sliding block guide rail move relatively; the sliding control block is also connected with a transmission mechanism, and can drive the shuttle block to move through the transmission mechanism so as to control the opening and closing of the rear door plate; the transmission mechanism is arranged at the tail end of the box body and is positioned near the rear door, one end of the transmission mechanism is connected with the sliding control block, and the other end of the transmission mechanism is connected with the shuttle block and can drive the shuttle block to move; the transmission mechanism is in rope transmission, chain transmission, link mechanism transmission, gear rack transmission, pneumatic transmission or hydraulic transmission; the shuttle block is arranged on the shuttle block guide rail, is buckled with the shuttle block guide rail and can move along the shuttle block guide rail on the shuttle block guide rail; the shuttle block is provided with a connecting device of the back door connecting piece, and the connecting device can hinge the back door connecting piece with the shuttle block; the shuttle block is also provided with a driven wheel mounting structure which can be firmly connected with the driven wheel and the traction rope; the shuttle block guide rail is arranged at the tail part of the box body, is adjacent to the rear door and is a linear guide rail, and can ensure that the shuttle block smoothly moves on the shuttle block guide rail; the rear door connecting piece is arranged between the rear door plate and the shuttle block and is in rigid connection or flexible connection, and when the shuttle block moves up and down, the rear door connecting piece can be driven to move so as to drive the rear door plate to open or close; the sliding block guide rail is arranged on the box body and is positioned on the side edge of the lower portion of the box body, and the sliding block guide rail is connected with the box body, so that the sliding control block can move smoothly on the sliding block guide rail.

2. The automatic door opener for a self-unloading freight container according to claim 1, wherein: the two automatic door opening devices are symmetrically arranged on two sides of the rear door.

3. The automatic door opener for a self-unloading freight container according to claim 1, wherein: the sliding control block is provided with a positioning device which can be embedded on the skeleton car or the lifting frame to keep the sliding control block fixed relative to the skeleton car or the lifting frame.

4. The automatic door opener for a self-unloading freight container according to claim 1, wherein: the transmission mechanism is in rope transmission and comprises a traction wheel, a traction rope, a guide wheel, a switching wheel and a driven wheel; the traction wheel is arranged near the sliding control block and is contacted with one end of the traction rope; the traction wheel is fixedly connected with the lower part of the box body and does not move along with the sliding control block; the traction rope is a flexible rope or chain, one end of the traction rope is connected with the sliding control block, the other end of the traction rope is connected with the shuttle block through a driven wheel, and the middle part of the traction rope bypasses the guide wheel and the switching wheel; the guide wheel is arranged on the box body and is positioned at the upper end near the rear door at the tail part of the box body, so that the movement direction of the traction rope can be changed, and the guide wheel can rotate; the transfer wheel is arranged at the tail part of the box body and is positioned above the shuttle block, so that the traction rope can bypass the periphery of the transfer wheel, and the transfer wheel is convenient to connect with the shuttle block; the driven wheel is arranged on the shuttle block, connected with the shuttle block and connected with the traction rope.

5. The automatic door opener for self-unloading freight container of claim 4, wherein: the traction rope is a steel wire rope, a fabric rope, a transmission chain or an anchor chain.