Safety device for side wing door of wing opening type van vehicle

Abstract

The utility model discloses a safety device for a side wing door of a wing opening type van vehicle, which comprises a supporting framework, side wings, a hydraulic cylinder, a horizontal rotating shaft, a first bevel gear, a second bevel gear, a vertical rotating shaft, a turntable, an elastic piece, a clamping block and a limiting ring, the horizontal rotating shaft and the vertical rotating shaft are rotationally connected with the supporting framework, and the side wings are fixedly connected with the horizontal rotating shaft; a first bevel gear is installed on the horizontal rotating shaft, a second bevel gear and a rotating disc are installed on the vertical rotating shaft, the second bevel gear is in meshed connection with the first bevel gear, at least one sliding groove is formed in the rotating disc in the circumferential direction, an elastic piece and a clamping block are installed in the sliding groove, the limiting ring is fixedly connected with the supporting framework, and a clamping groove is formed in the inner wall of the limiting ring. When the hydraulic cylinder is damaged, the side wings lose support, rotate downwards under gravity and drive the horizontal rotating shaft, the vertical rotating shaft and the rotating disc to rotate in sequence, after centrifugal force borne by the clamping blocks overcomes the elastic force of the elastic pieces, the clamping blocks are connected with the clamping grooves in a clamped mode, the side wings cannot continue to fall downwards, and the anti-falling effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wing opening van technology field, especially a wing opening van side wing door safety device. BACKGROUND

[0002] The wing opening van is a new type of logistics transportation equipment, and the two side wing doors can be lifted and stacked on the top plate through hydraulic drive to make the two sides of the van completely open, so that the mechanical equipment such as a forklift can quickly load and unload goods, and the wing opening van is widely used in the transportation of automobile parts, household appliances, chemical products, food and the like, and has the advantages of high loading and unloading efficiency and low operation cost.

[0003] However, the opening and closing of the side wing door of the existing wing opening van mostly depends on the hydraulic system drive. In actual use, unexpected situations such as hydraulic oil pipe burst, oil cylinder seal failure, pin shaft falling off or hydraulic element failure can easily cause the side wing door to fall instantaneously due to pressure loss. Although some vehicles are equipped with hydraulic locks or explosion-proof valves to maintain the oil circuit pressure, they cannot cope with mechanical failures such as oil cylinder pin shaft falling off, and if the pipeline between the hydraulic lock and the oil cylinder leaks or bursts, the side wing door will still be out of control. In addition, the hydraulic lock itself also has the risk of failure due to wear and tear and foreign matter jamming.

[0004] It should be noted that the above content belongs to the technical cognition of the inventor and does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0005] Therefore, it is necessary to provide a wing opening van side wing door safety device in view of the above technical problems.

[0006] In order to achieve the above purpose, the utility model provides a wing opening van side wing door safety device, which comprises a support framework, a side wing and a hydraulic cylinder, the side wing and the hydraulic cylinder are both rotatably installed on the support framework, the output end of the hydraulic cylinder is hingedly connected with the side wing, and further comprises a horizontal rotating shaft, a first bevel gear, a second bevel gear, a vertical rotating shaft, a rotating disc, an elastic member, a clamping block and a limiting ring, the horizontal rotating shaft and the vertical rotating shaft are both rotatably connected with the support framework, the horizontal rotating shaft is perpendicular to the vertical rotating shaft, the side wing is fixedly connected with the horizontal rotating shaft, the side wing is rotatably connected with the support framework through the horizontal rotating shaft, the first bevel gear is installed on the horizontal rotating shaft, the second bevel gear and the rotating disc are installed on the vertical rotating shaft, the second bevel gear is meshingly connected with the first bevel gear, at least one sliding groove is circumferentially formed in the rotating disc, the elastic member and the clamping block are installed in the sliding groove, one end of the elastic member is fixedly connected with the sliding groove, the other end of the elastic member is fixedly connected with the clamping block, the clamping block is slidably connected with the sliding groove, and the limiting ring is fixedly connected with the support framework; a plurality of clamping grooves for clamping cooperation with the clamping block are formed in the inner wall of the limiting ring; when the rotating speed of the rotating disc reaches a preset value, the clamping block can extend out of the sliding groove under the action of centrifugal force and be clamped in cooperation with the clamping groove.

[0007] Preferably, the vertical rotating shaft, the rotating disc and the limiting ring are coaxially arranged.

[0008] Preferably, the first bevel gear has more teeth than the second bevel gear.

[0009] Preferably, the rotating disc and the limiting ring are in clearance fit.

[0010] Preferably, the notch of the clamping slot is chamfered.

[0011] Preferably, the horizontal rotating shaft and the vertical rotating shaft are rotatably installed on the support frame through bearings.

[0012] The beneficial effects of the technical solution are as follows: when the hydraulic cylinder is damaged, the side wing loses support, rotates downward under gravity, and drives the horizontal rotating shaft, the first bevel gear, the second bevel gear, the vertical rotating shaft and the rotating disc to rotate in sequence, the rotating disc drives the clamping block to rotate, the centrifugal force of the clamping block gradually increases, the centrifugal force overcomes the elastic force of the elastic member, one end of the clamping block extends out of the sliding slot and enters the clamping slot to be clamped with the clamping slot, so that the side wing cannot continue to fall downward, and the anti-falling effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of a wing opening van side wing door safety device of an embodiment.

[0014] Figure 2 It is a partial enlarged view of A. Figure 1

[0015] Figure 3 It is a top view of the rotating disc and the limiting ring.

[0016] In the figure, 1 is a support frame, 2 is a side wing, 3 is a hydraulic cylinder, 4 is a horizontal rotating shaft, 5 is a first bevel gear, 6 is a second bevel gear, 7 is a vertical rotating shaft, 8 is a rotating disc, 9 is an elastic member, 10 is a clamping block, 11 is a limiting ring, 12 is a sliding slot, 13 is a clamping slot, 14 is a chamfer, and 15 is a bearing. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0018] Please refer to Figures 1 to 3 ​The embodiment of the application provides a wing opening van side wing door safety device, which comprises a support framework 1, a side wing 2 and a hydraulic cylinder 3, the side wing 2 and the hydraulic cylinder 3 are both rotationally installed on the support framework 1, the output end of the hydraulic cylinder 3 is hingedly connected with the side wing 2, the side wing 2 is driven to rotate upwards or downwards by the hydraulic cylinder 3, so that the side wing 2 is opened or closed, and the above are all prior arts;

[0019] The embodiment focuses on further comprising a horizontal rotating shaft 4, a first bevel gear 5, a second bevel gear 6, a vertical rotating shaft 7, a rotating disc 8, an elastic element 9, a clamping block 10 and a limiting ring 11, the horizontal rotating shaft 4 and the vertical rotating shaft 7 are both rotationally connected with the support framework 1, specifically, the support framework 1 is provided with a bearing 15 for mounting the horizontal rotating shaft 4 and the vertical rotating shaft 7, the horizontal rotating shaft 4 and the vertical rotating shaft 7 are both rotationally installed on the support framework 1 through the bearing 15, the bearing connected with the horizontal rotating shaft 4 is not shown, the horizontal rotating shaft 4 is horizontally arranged, the vertical rotating shaft 7 is vertically arranged, and the horizontal rotating shaft 4 is perpendicularly arranged with the vertical rotating shaft 7;

[0020] In the embodiment, the side wing 2 is fixedly connected with the horizontal rotating shaft 4, so that the side wing 2 is rotationally connected with the support framework 1 through the horizontal rotating shaft 4;

[0021] In the embodiment, the first bevel gear 5 is mounted on the horizontal rotating shaft 4, the second bevel gear 6 and the rotating disc 8 are mounted on the vertical rotating shaft 7, and the second bevel gear 6 is meshingly connected with the first bevel gear 5; the horizontal rotating shaft 4 drives the second bevel gear 6, the vertical rotating shaft 7 and the rotating disc 8 to rotate through the first bevel gear 5;

[0022] The rotating disc 8 is provided with at least one chute 12 in the circumferential direction, four chutes 12 are provided in the embodiment, and the specific number can be flexibly set according to requirements. The elastic element 9 and the clamping block 10 are installed in the chute 12. The elastic element 9 is selected from a spring. One end of the elastic element 9 is fixedly connected with the chute 12. The other end of the elastic element 9 is fixedly connected with the clamping block 10. The clamping block 10 is slidably connected with the chute 12. The limiting ring 11 is fixedly connected with the support framework 1. A plurality of clamping grooves 13 for clamping cooperation with the clamping block 10 are formed on the inner wall of the limiting ring 11. The size of the clamping groove 13 is greater than the size of the clamping block 10, so that the clamping block 10 can enter the clamping groove 13 when rotating. The more the number of the clamping block 10 and the chute 12 is, the shorter the time of the clamping block 10 clamped into the clamping groove 13 is, and the shorter the reaction time of the locking side wing 2 is when the hydraulic cylinder 3 is damaged. When the rotating speed of the rotating disc 8 reaches a preset value, the clamping block 10 can extend out of the chute 12 and be clamped and cooperated with the clamping groove 13 under the action of centrifugal force. The horizontal rotating shaft 4, the first bevel gear 5, the second bevel gear 6, the vertical rotating shaft 7, the rotating disc 8, the clamping block 10 and the limiting ring 11 are all selected from high-strength metal materials, such as alloy steel and titanium alloy. The horizontal rotating shaft 4, the first bevel gear 5, the second bevel gear 6 and the vertical rotating shaft 7 are arranged to enable the rotating disc 8 to be horizontally arranged, enable the rotating disc 8 to drive the clamping block 10 to rotate in the horizontal direction, and enable the clamping block 10 to be affected by gravity in the same way at any angle, thereby avoiding the situation that the clamping block 10 is affected by different pressures of the elastic element 9 at different angles when the rotating disc 8 is arranged vertically, the depth of the clamping block 10 in the chute 12 is different, and the speed of the clamping block 10 clamped into the clamping groove 13 is affected.

[0023] The vertical rotating shaft 7, the rotating disc 8 and the limiting ring 11 are coaxially arranged, so as to enable the vertical rotating shaft 7 to stably drive the rotating disc 8 to rotate on the inside of the limiting ring 11, enable the distance between the clamping block 10 and each clamping groove 13 to be the same, and enable the clamping block 10 to be clamped into any clamping groove 13.

[0024] When the hydraulic cylinder 3 is damaged, the side wing 2 loses support and rotates downward under the action of gravity. The rotating speed gradually increases under the action of gravity acceleration. The side wing 2 drives the horizontal rotating shaft 4, the first bevel gear 5, the second bevel gear 6, the vertical rotating shaft 7 and the rotating disc 8 to rotate in sequence. The rotating disc 8 drives the clamping block 10 to rotate. The centrifugal force acting on the clamping block 10 gradually increases. The centrifugal force overcomes the elastic force of the elastic element 9, so that one end of the clamping block 10 extends out of the chute 12 and enters the clamping groove 13. The clamping block 10 is clamped and cooperated with the clamping groove 13. Part of the clamping block 10 is located in the clamping groove 13, and part of the clamping block 10 is located in the chute 12. Therefore, the rotating disc 8, the vertical rotating shaft 7 and the horizontal rotating shaft 4 are limited to rotate, so that the side wing 2 cannot continue to fall downward, and the anti-falling effect is achieved.

[0025] After the side wing 2 stops falling, the friction force between the clamping block 10 and the clamping groove 13 is greater than the elastic restoring force of the elastic element 9. The clamping block 10 is stably clamped with the clamping groove 13, so that the position of the side wall is kept stable.

[0026] When the side wing 2 needs to be rotated downward, the side wing 2 can be first lifted up, and in the process of lifting up the side wing 2, the extrusion force between the clamping block 10 and the clamping groove 13 is reduced, and the friction force is also reduced; when the friction force between the clamping block 10 and the clamping groove 13 is less than the elastic restoring force of the elastic member 9, the elastic member 9 drives the clamping block 10 to retract into the sliding groove 12, and the clamping block 10 is no longer clamped with the clamping groove 13, and then the side wing 2 can be slowly lowered;

[0027] When the hydraulic cylinder 3 is not damaged, the hydraulic cylinder 3 drives the side wing 2 to slowly ascend and descend, the centrifugal force received by the clamping block 10 is less than the elastic force of the elastic member 9, the clamping block 10 will not extend out of the sliding groove 12, and will not be clamped with the clamping groove 13, thereby ensuring that the side wing 2 is normally opened and closed.

[0028] In a preferred embodiment, in order to increase the centrifugal force of the clamping block 10 when the side wing 2 falls, please refer to Figure 1 , the number of teeth of the first bevel gear 5 is greater than the number of teeth of the second bevel gear 6, so that the acceleration effect can be achieved, and when the horizontal rotating shaft 4 drives the second bevel gear 6 and the vertical rotating shaft 7 to rotate through the first bevel gear 5, the rotating speed of the vertical rotating shaft 7 can be greater than the rotating speed of the horizontal rotating shaft 4.

[0029] In a preferred embodiment, in order to ensure that the clamping block 10 is accommodated in the sliding groove 12, and at the same time, the clamping block 10 is as close as possible to the inner wall of the limiting ring 11 to facilitate the clamping block 10 to be clamped into the clamping groove 13, please refer to Figure 2 and Figure 3 , the rotating disc 8 is arranged in clearance fit with the limiting ring 11, so that the clamping block 10 can enter the clamping groove 13 as quickly as possible.

[0030] In a preferred embodiment, in order to facilitate the clamping block 10 to be stably clamped into the clamping groove 13 after the clamping block 10 extends out of the sliding groove 12 under the centrifugal force, please refer to Figure 3 , the slot of the clamping groove 13 is provided with a chamfer 14. The chamfer 14 forms an expanded structure, which facilitates guiding the clamping block 10 to enter the clamping groove 13.

[0031] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0032] The above embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, on the premise of not departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

[0033] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" orientation or positional relationship indicated in the drawing is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as limiting the utility model.

[0034] In addition, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0035] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A side wing (2) door safety device of a wing opening van, comprising a support frame (1), a side wing (2) and a hydraulic cylinder (3), the side wing (2) and the hydraulic cylinder (3) are both rotatably installed on the support frame (1), and the output end of the hydraulic cylinder (3) is hingedly connected with the side wing (2), characterized in that, The horizontal rotating shaft (4), the first bevel gear (5), the second bevel gear (6), the vertical rotating shaft (7), the rotating disc (8), the elastic member (9), the clamping block (10) and the limiting ring (11) are arranged on the support framework (1).

2. Wing opening van side wing (2) door safety device according to claim 1, characterized in that The vertical rotating shaft (7), the rotating disc (8) and the limiting ring (11) are coaxially arranged.

3. The wing opening van side wing (2) door safety device according to claim 1, characterized in that, The number of teeth of the first bevel gear (5) is greater than that of the second bevel gear (6).

4. The wing opening van side wing (2) door safety device according to claim 1, characterized in that, The rotating disc (8) is in clearance fit with the limiting ring (11).

5. The wing opening van side wing (2) door safety device according to claim 1, characterized in that, The notch of the clamping groove (13) is chamfered.

6. The wing opening van side wing (2) door safety device according to claim 1, characterized in that, The horizontal rotating shaft (4) and the vertical rotating shaft (7) are rotatably installed on the support framework (1) through bearings (15).

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