Carriage with linkage door lock mechanism and semitrailer

Abstract

The utility model provides a compartment with a linkage door lock mechanism and a semitrailer. The compartment with the linkage door lock mechanism comprises a compartment door, a compartment bottom plate and a pair of compartment stand columns arranged on the compartment bottom plate. One side of the carriage door is rotationally connected to one carriage stand column through a hinge, a rotating rod lock assembly is rotationally installed on the other side of the carriage door, a connecting plate assembly is arranged on one side of the top end of the rotating rod lock assembly, and a plug pin assembly is connected to the connecting plate assembly. The bolt assembly comprises a bolt base body, a guide lock box arranged on one side of a carriage door and a fixed lock box arranged on another carriage stand column. The connecting plate assembly comprises a first connecting plate fixed to the top of the rotating rod lock assembly, a connecting plate fixedly connected with the plug pin base body and a second connecting plate with the two ends hinged to the connecting plate and the first connecting plate respectively. The carriage with the linkage door lock mechanism can solve the problems that the upper portion of the carriage expands and deforms when a rotating rod lock assembly is used for locking a side-by-side door or a single door, and the carriage door is not tightly closed.

Description

Technical Field

[0001] The utility model relates to the field of carriage door locks, and specifically, to a carriage and a semi-trailer with a linkage door lock mechanism. Background Art

[0002] At present, carriage doors in the market are usually designed in the form of single-leaf doors or double-leaf doors. For the structure of single-leaf doors or double-leaf doors, the carriage door is usually locked by the cooperation between a lock rod and a vertical column or the carriage floor. However, for a carriage door without an upper crossbeam, since the top end of the lock rod cannot be well supported, the upper part of the door is unstable when closed, the upper part is prone to expand, the door cannot be tightly closed, or the door is squeezed and deformed.

[0003] The invention patent application with the application publication number of CN116856809 A discloses a hidden door lock rear frame for a van-type refrigerated truck, which includes a left corner post, a fiberglass tube, and a hidden door lock mechanism. The hidden door lock mechanism includes an upper lock rod, a lower lock rod, a lock seat, etc. The upper lock rod and the lower lock rod are arranged in the fiberglass tube, and the upper lock rod and the lower lock rod can rotate and slide in the fiberglass tube. Threads are provided at one end of the upper lock rod and the lower lock rod close to the box lock. The lock seat is arranged in a groove provided at the middle position of the threshold and the door lintel. The lower surface of the box lock is fixedly connected to the surface of a groove provided on the left door. The setting of this hidden door lock mechanism can make the appearance of the left door and the right door more beautiful, but this hidden door lock mechanism does not improve the fastening performance of the carriage door lock. Summary of the Utility Model

[0004] In order to solve the problems of the upper part of the carriage bulging and deforming and the carriage door not closing tightly when using a rotating rod lock assembly to lock a double-leaf door or a single-leaf door, the technical solution adopted by the utility model is: a carriage with a linkage door lock mechanism, including a carriage door, a carriage floor, and a pair of carriage vertical columns arranged on the carriage floor;

[0005] One side of the carriage door is rotatably connected to one of the carriage vertical columns through a hinge, and a rotating rod lock assembly is rotatably installed on the other side of the carriage door. A connecting plate assembly is arranged on one side of the top end of the rotating rod lock assembly, and a latch assembly is connected to the connecting plate assembly;

[0006] The latch assembly includes a latch base body, a guiding lock box arranged on one side of the carriage door, and a fixed lock box arranged on the other carriage vertical column. The latch is slidably matched with the guiding lock box and the fixed lock box respectively;

[0007] The connecting plate assembly includes a first connecting plate fixed on the top of the rotating rod lock assembly, a connecting plate fixedly connected to the latch base body, and a second connecting plate with two ends respectively hinged to the connecting plate and the first connecting plate.

[0008] Based on the above, in order to facilitate guiding the sliding process, the guiding lock box is sleeved outside the bolt base body, and the fixed lock box and the guiding lock box are arranged opposite to each other.

[0009] Based on the above, in order to facilitate locking and unlocking the carriage door, the rotating rod lock assembly includes a lock rod vertically and rotatably installed on the carriage door, and a lower lock seat arranged on the carriage floor and cooperating with the bottom of the lock rod. A handle is arranged at the lower part of the lock rod, and a handle lock catch for holding the handle is arranged on the carriage door. Specifically, this rotating rod lock assembly can select the carriage lock commonly used in refrigerated trucks and remove the upper lock seat.

[0010] Based on the above, the length value of the bolt base body is greater than the distance value between the fixed lock box and the guiding lock box.

[0011] Based on the above, the handle and the first connecting plate are respectively arranged on different sides of the lock rod.

[0012] The present invention also provides a semi-trailer, which is equipped with the carriage having the linkage door lock mechanism as described above.

[0013] The present invention has substantial features and progress compared with the prior art. Specifically, for the carriage and semi-trailer with the linkage door lock mechanism provided by the present invention, while locking the door through the lock rod, the upper part is locked through the linkage mechanism to drive the first connecting plate to rotate. When the first connecting plate rotates, it drives the second connecting plate to displace irregularly, and the second connecting plate further pushes the bolt base body to reciprocate in the guiding lock box, so that the bolt base body is inserted into the fixed lock box, thereby achieving the purpose of locking to prevent the door from opening and preventing the box from bulging. Therefore, this mechanism solves the problems of the upper part of the carriage bulging and deforming when using the rotating rod lock assembly to lock the double-leaf door or single-leaf door, and the carriage door not closing tightly, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic side structure diagram of the carriage and semi-trailer with the linkage door lock mechanism provided by the present invention.

[0015] Figure 2 is a schematic top view of the locked state of the carriage and semi-trailer with the linkage door lock mechanism provided by the present invention.

[0016] Figure 3 is a schematic top view of the opened state of the carriage and semi-trailer with the linkage door lock mechanism provided by the present invention.

[0017] Figure 4 is a schematic structure diagram of the carriage and semi-trailer with the linkage door lock mechanism provided in Embodiment 3 of the present invention.

[0018] In the figure: 1. First carriage column; 2. Fixed lock box; 3. Lock rod; 4. Connecting plate; 5. Second connecting plate; 6. First connecting plate; 7. Bolt base; 8. Carriage door; 9. Carriage floor; 10. Second carriage column; 11. Handle lock catch; 12. Lower lock seat; 13. Guide lock box. Specific embodiments

[0019] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0020] Embodiment 1

[0021] This embodiment provides a carriage with a linkage door lock mechanism, as Figure 1 , Figure 2 , Figure 3 shown, including a carriage door 8, a carriage floor 9, and a pair of carriage columns arranged on the carriage floor 9. According to the distribution position, they can be divided into a first carriage column 1 and a second carriage column 10.

[0022] One side of the carriage door 8 is rotatably connected to one of the carriage columns through a hinge. A rotating rod lock assembly is rotatably installed on the other side of the carriage door. A connecting plate assembly is provided on one side of the top of the rotating rod lock assembly, and a bolt assembly is connected to the connecting plate assembly.

[0023] The bolt assembly includes a bolt base 7, a guide lock box 13 provided on one side of the carriage door 8, and a fixed lock box 2 provided on the other carriage column. The bolt base 7 is slidably matched with the guide lock box 13 and the fixed lock box 2 respectively.

[0024] The connecting plate assembly includes a first connecting plate 6 fixed to the top of the rotating rod lock assembly, a connecting plate 4 fixedly connected to the bolt base 7, and a second connecting plate 5 whose two ends are respectively hinged to the connecting plate 4 and the first connecting plate 6.

[0025] Specifically, in order to facilitate locking and unlocking of the carriage door, the rotating rod lock assembly includes a lock rod 3 vertically and rotatably installed on the carriage door 8, and a lower lock seat 12 provided on the carriage floor 9 and cooperating with the bottom of the lock rod 3. A handle is provided at the lower part of the lock rod 3, and a handle lock catch 11 for clamping the handle is provided on the carriage door. Specifically, this rotating rod lock assembly can select the carriage lock commonly used in refrigerated trucks and remove the upper lock seat.

[0026] Embodiment 2

[0027] This embodiment provides a carriage with a linkage door lock mechanism. The difference from Embodiment 1 is that in this embodiment, in order to facilitate guiding the sliding process, the guide lock box is sleeved outside the bolt base, and the fixed lock box and the guide lock box are arranged opposite to each other.

[0028] In this embodiment, the length value of the bolt base body is greater than the spacing value between the fixed lock box and the guiding lock box. The handle and the first connecting plate are respectively arranged on different sides of the lock rod.

[0029] Embodiment 3

[0030] This embodiment provides a carriage with a linkage door lock mechanism, which is different from Embodiment 1 in that, in this embodiment, as Figure 4 shown, two carriage doors are arranged between a pair of carriage columns, the fixed lock box and the guiding lock box are respectively arranged on the movable ends of the two carriage doors, and the bolt assembly is arranged between the fixed lock box and the guiding lock box for locking between the two carriage doors.

[0031] Embodiment 4

[0032] This embodiment provides a semi-trailer equipped with the carriage with a linkage door lock mechanism provided in Embodiment 1 or Embodiment 2 or Embodiment 3.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solutions of the present invention, they should all be covered by the scope of the technical solutions claimed by the present invention.

Claims

1. A carriage with a linkage door lock mechanism, characterized in that: It includes a carriage door, a carriage floor, and a pair of carriage uprights provided on the carriage floor; One side of the carriage door is rotatably connected to one of the carriage uprights through a hinge. A rotary rod lock assembly is rotatably installed on the other side of the carriage door. One side of the top of the rotary rod lock assembly is provided with a connecting plate assembly, and a bolt assembly is connected to the connecting plate assembly; The bolt assembly includes a bolt base body, a guiding lock box provided on one side of the carriage door, and a fixed lock box provided on the other carriage upright. The bolt base body is slidably matched with the guiding lock box and the fixed lock box respectively; The connecting plate assembly includes a first connecting plate fixed to the top of the rotary rod lock assembly, a connecting plate fixedly connected to the bolt base body, and a second connecting plate whose two ends are respectively hinged to the connecting plate and the first connecting plate.

2. The carriage with an interlocking door lock mechanism according to claim 1, characterized in that: The guiding lock box is sleeved outside the bolt base body, and the fixed lock box and the guiding lock box are arranged oppositely.

3. The carriage with an interlocking door lock mechanism according to claim 1, characterized in that: The rotary rod lock assembly includes a lock rod vertically and rotatably installed on the carriage door, and a lower lock seat provided on the carriage floor and matched with the bottom of the lock rod. A handle is provided at the lower part of the lock rod, and a handle lock catch for holding the handle is provided on the carriage door.

4. The carriage with an interlocking door lock mechanism according to claim 3, characterized in that: The length value of the bolt base body is greater than the distance value between the fixed lock box and the guiding lock box.

5. The carriage with an interlocking door lock mechanism according to claim 4, characterized in that: The handle and the first connecting plate are respectively arranged on different sides of the lock rod.

6. A semi-trailer, characterized in that, This semi-trailer is equipped with a carriage having a linkage door lock mechanism according to any one of claims 1 to 5.

Images