CN210134728U - Semi-trailer door safety lock device - Google Patents

Abstract

The utility model discloses a semitrailer door safety lock device belongs to semitrailer accessory equipment technical field, sets up in the bottom of semitrailer door plant, its characterized in that: comprises a lock catch and a driving structure for opening and closing the lock catch; the lock catch comprises a central body and a clamping body, the driving structure comprises a connecting rod I and a connecting rod II which are arranged in parallel, and a supporting clamping groove which slides along the horizontal direction is sleeved on the connecting rod I and the connecting rod II; the support draw-in groove of connecting rod I has the spout that can pull out the support draw-in groove along the axle center direction of central body, the beneficial effects of the utility model are that: the lock catch can be closed and opened simultaneously, and a single lock catch can be closed and opened simultaneously; the supporting clamping groove is provided with a sliding groove capable of being pulled out along the axis direction of the central body, a limiting table in interference fit with the vehicle body is arranged on the outer side of the sliding groove, the two modes are rapidly switched, and the structure is stable and beneficial to operation.

Description

Semi-trailer door safety lock device

The technical field is as follows:

the utility model belongs to the technical field of semitrailer accessory equipment, more specifically relates to a semitrailer door safety lock device.

Background art:

the utility model provides a space frame structure that storehouse bars formula semitrailer, mainly used agricultural and sideline products and other light bubble goods's transportation, in order to ensure the ventilation of transported substance article, and reduce railway carriage weight, increase the transport capacity, longeron and whole through-type crossbeam are designed into the assembly welding and are formed, the carriage adopts fence structural design, can balance the intensity of frame, rigidity, toughness, can guarantee again that bearing capacity is strong, permanent deformation does not take place, and simple structure is suitable for, it is convenient to dismantle, for the user reduces investment cost, create more profit values.

But there is a problem in storehouse bars formula semitrailer carriage, and the carriage door is more promptly, opens and closes and need certain time, and in order to raise the efficiency, the design of storehouse bars formula semitrailer door adopts the connecting rod, with the hasp pressfitting in the locked groove, and such benefit is that the disguise is better, and the efficiency of opening and shutting is higher.

However, the device has a fatal defect, as each lock catch is linked with the connecting rod, the device can only realize the functions of opening and closing simultaneously, once a certain section is opened, all the lock catches can only be opened, and particularly when a large amount of goods are loaded, the door plate is naturally opened along with the opening of the lock catches, and the goods even fall down.

The utility model has the following contents:

in order to solve the problems and overcome the defects of the prior art, the utility model provides a semi-trailer door safety lock device;

the first technical problem to be solved is that: the number of the doors of the semi-trailer carriage is large, a certain time is needed for opening and closing, and how to find a safety lock with good concealment and high opening and closing efficiency;

the second technical problem to be solved is that: each lock catch is linked with the connecting rod, so that the functions of opening and closing the lock catches can be realized, all the lock catches can be opened once a certain section is opened, and particularly, when more cargoes are loaded, the door plate is opened naturally along with the opening of the lock catches, and the cargoes even fall off.

The utility model provides a concrete technical scheme of above-mentioned technical problem does: the semitrailer door safety lock device is arranged at the bottom of a semitrailer door panel and comprises a lock catch and a driving structure for opening and closing the lock catch; the method is characterized in that: the lock catch comprises a central body and a clamping body, the axis of the central body is provided with a rotating shaft, the rotating shaft is arranged at the bottom of the upright post of the semitrailer in a rotating connection mode, the clamping body is symmetrically arranged on two sides of the central body along the axis center of the central body,

one end of the clamping body is provided with a notch, the notch is connected with the fixed shaft in a clamping manner, the fixed shaft comprises a fixed shaft I and a fixed shaft II, and the fixed shaft I and the fixed shaft II are respectively arranged at the bottoms of the door plates on two sides of the upright post of the semitrailer;

the clamping body at one side of the central body is provided with a shaft hole I, the clamping body at the other side of the central body is provided with a shaft hole II,

the driving structure comprises a connecting rod I and a connecting rod II which are arranged in parallel, the connecting rod I and the connecting rod II are respectively provided with a pin shaft hole corresponding to the shaft hole I and the shaft hole II, and the connecting rod I and the connecting rod II are respectively connected with the shaft hole I and the shaft hole II through a pin shaft penetrating through the pin shaft hole;

the connecting rod I and the connecting rod II are sleeved with supporting clamping grooves which slide along the horizontal direction; the support clamping groove of the connecting rod I is provided with a sliding groove capable of pulling out the support clamping groove along the axis direction of the central body.

Furthermore, the driving structure further comprises a rotary table, and a preset number of shaft holes III are formed in the axis of the rotary table in an annular array mode.

Furthermore, connecting rod I sets up the round pin axle and links to each other through the mode of pegging graft with shaft hole III, and connecting rod II is corresponding with shaft hole III through articulated mode.

Furthermore, a rotating handle is arranged at the axis of the rotating disc.

Furthermore, one side of the door plate is connected with the upright post through a hinge.

Furthermore, the outside of the sliding groove is provided with a limit table in interference fit with the vehicle body.

The utility model has the advantages that:

the device realizes the simultaneous closing and opening of a plurality of lock catches, and can realize the simultaneous closing and opening of a single lock catch;

the supporting clamping groove is provided with a sliding groove capable of being pulled out along the axis direction of the central body, and a limiting table in interference fit with the vehicle body is arranged on the outer side of the sliding groove, so that the two modes are quickly switched, and the structure is stable and beneficial to operation.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the lock structure of the present invention;

FIG. 3 is a schematic structural view of the supporting slot of the present invention; in the drawings:

1. a column; 2. a door panel; 3. a hinge; 4. a connecting rod II; 5. a rotating shaft; 6. a fixed shaft; 7. opening the gap; 8. a turntable; 9. a shaft hole III; 10. a support slot; 11. a connecting rod I; 12. a shaft hole I; 13. a shaft hole II; 14. a snap body; 15. a central body; 16. a chute; 17. and a limiting table.

The specific implementation mode is as follows:

to further clarify the objects, aspects and advantages of the present invention, a more complete description of the invention will now be rendered by reference to figures 1-3. In describing the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "rear", "lower left", "upper right", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model discloses a concrete implementation mode: the semitrailer door safety lock device is arranged at the bottom of a semitrailer door panel 2 and comprises a lock catch and a driving structure for opening and closing the lock catch; the method is characterized in that: the lock catch comprises a central body 15 and a clamping body 14, the axis of the central body 15 is provided with a rotating shaft 5, the rotating shaft 5 is arranged at the bottom of the upright post 1 of the semitrailer in a rotating connection mode, the clamping body 14 is symmetrically arranged on the two sides of the central body 15 along the axis center of the central body 15,

one end of the clamping body 14 is provided with a notch 7, the notch 7 is clamped and connected with a fixed shaft 6, and the fixed shaft 6 is arranged at the bottom of the door plates 2 at two sides of the semitrailer upright post 1;

the clamping body 14 on one side of the central body 15 is provided with a shaft hole I12, the clamping body 14 on the other side of the central body 15 is provided with a shaft hole II 13,

the driving structure comprises a connecting rod I11 and a connecting rod II 4 which are arranged in parallel, the connecting rod I11 and the connecting rod II 4 are respectively provided with a pin shaft hole corresponding to a shaft hole I12 and a shaft hole II 13, and the connecting rod I11 and the connecting rod II 4 are respectively connected with the shaft hole I12 and the shaft hole II 13 through a pin shaft which is arranged in the pin shaft hole in a penetrating manner;

the connecting rod I11 and the connecting rod II 4 are sleeved with a supporting clamping groove 10 which slides along the horizontal direction; the support slot 10 of the connecting rod I11 is provided with a sliding groove 16 which can pull out the support slot 10 along the axial direction of the central body 15.

Further, the driving structure further comprises a rotating disc 8, and a preset number of shaft holes III 9 are arranged along the axis of the rotating disc 8 in an annular array mode.

Furthermore, connecting rod I11 sets up the round pin axle and links to each other through the mode of pegging graft with shaft hole III 9, and connecting rod II 4 corresponds with shaft hole III 9 through articulated mode.

Further, a rotating handle is arranged on the axis of the rotating disc 8.

Further, one side of the door panel 2 is connected with the upright post 1 through a hinge 3.

Further, a limiting table 17 in interference fit with the vehicle body is arranged on the outer side of the sliding groove 16.

It is noted that the utility model relates to a semitrailer door safety lock device, when in operation,

1. when the lock catches of all the semi-trailer door plates 2 need to be opened simultaneously, the rotating disc 8 is rotated by using the rotating handle, the rotating disc 8 and the connecting rod I11 are provided with pin shafts which are connected with the shaft holes III 9 in an inserting mode, the connecting rod II 4 corresponds to the shaft holes III 9 in a hinging mode, the rotating disc 8 can drive the connecting rod I11 and the connecting rod II 4 to swing simultaneously, the clamping body 14 is further driven to rotate around the central body 15, the notch 7 is further separated from the fixed shaft 6, the semi-trailer door plates 2 are separated from the upright posts 1, and the door plates 2 are opened through the hinges 3;

2. when the lock catch of a part of the semi-trailer door panel 2 needs to be opened at the same time, the supporting clamping groove 10 of the connecting rod I11 is pulled out by the sliding groove 16 pulled out along the axial direction of the central body 15, so that the connecting rod I11 is separated from the lock catch and the turntable 8,

then inserting the shaft holes II 13 of the connecting rods II 4 corresponding to the lock catches of the semitrailer door panel 2 to be opened into the pin shafts, not inserting the pin shafts into the shaft holes II 13 of other lock catches,

therefore, along with the swinging of the connecting rod I11 and the connecting rod II 4, the connecting rod I11 is pulled out, so that the lock catch cannot be driven to swing, and the connecting rod II 4 and other lock catches cannot rotate without pin shafts, so that the opening and closing of the door panel 2 of the single semitrailer are realized,

the special semitrailer door safety lock device is arranged at the bottom of the semitrailer door panel 2, and when the semitrailer door safety lock device is partially opened, normal use of other semitrailer door panels 2 cannot be influenced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A semi-trailer door safety lock device is arranged at the bottom of a semi-trailer door panel (2) and comprises a lock catch and a driving structure for opening and closing the lock catch; the method is characterized in that: the lock catch comprises a central body (15) and a clamping body (14), a rotating shaft (5) is arranged at the axis of the central body (15), the rotating shaft (5) is arranged at the bottom of the upright post (1) of the semitrailer in a rotating connection mode, the clamping body (14) is symmetrically arranged at the two sides of the central body (15) along the axis center of the central body (15),

one end of the clamping body (14) is provided with a notch (7), the notch (7) is clamped and connected with a fixed shaft (6), and the fixed shaft (6) is arranged at the bottom of the door plate (2) on two sides of the semitrailer upright post (1);

the clamping body (14) at one side of the central body (15) is provided with a shaft hole I (12), the clamping body (14) at the other side of the central body (15) is provided with a shaft hole II (13),

the driving structure comprises a connecting rod I (11) and a connecting rod II (4) which are arranged in parallel, pin shaft holes corresponding to the shaft hole I (12) and the shaft hole II (13) are respectively formed in the connecting rod I (11) and the connecting rod II (4), and the connecting rod I (11) and the connecting rod II (4) are respectively connected with the shaft hole I (12) and the shaft hole II (13) through a pin shaft penetrating in the pin shaft holes;

the connecting rod I (11) and the connecting rod II (4) are sleeved with a supporting clamping groove (10) which slides along the horizontal direction; the supporting clamping groove (10) of the connecting rod I (11) is provided with a sliding groove (16) which can pull out the supporting clamping groove (10) along the axis direction of the central body (15).

2. Semi-trailer door security lock arrangement as claimed in claim 1, characterised in that the driving arrangement further comprises a turntable (8), a predetermined number of shaft holes iii (9) being provided in an annular array along the axis of the turntable (8).

3. The semitrailer door safety lock device of claim 2, characterized in that the connecting rod i (11) is provided with a pin shaft connected with the shaft hole iii (9) in an inserting manner, and the connecting rod ii (4) corresponds to the shaft hole iii (9) in a hinged manner.

4. Semi-trailer door lock arrangement as claimed in claim 2 or 3, characterised in that the centre of the turning disc (8) is provided with a turning handle.

5. Semi-trailer door security lock arrangement according to claim 1, characterised in that one side of the door panel (2) is connected to the pillar (1) by means of a hinge (3).

6. The semitrailer door safety lock device according to claim 1, characterized in that a stopper (17) that is interference-fitted with the vehicle body is provided outside the slide groove (16).

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