Carriage door plate locking and fixing device

Abstract

The utility model relates to a carriage door plate locking and fixing device which is arranged on the inner side of a carriage door plate, a bent plate is arranged on the inner side of the carriage door plate, a sliding groove is formed in the bent plate, a sliding shaft is arranged in the sliding groove in a sliding mode, and when the door plate starts to be at the maximum angle, the sliding shaft is located in a round nest at the end of the sliding groove and limits the door plate. The door plate is provided with a connecting end and an operating end, the connecting end is rotationally connected with the door plate, and the height of the operating end is matched with the hand of an operator located on the ground; the lock hook is connected with the connecting end, and the lock hook is arranged to be capable of rotating along with the handle rod and hooking the sliding shaft located in the round nest to fix the sliding shaft after the door plate is opened at the maximum angle; the handle rod is arranged to drive the lock hook to rotate, the lock hook is used for locking the sliding shaft of the door limiting stopper, an operator does not need to climb on a carriage, the door plate can be positioned and unlocked under the carriage, and operation difficulty and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning of carriage door panels, in particular to a locking and fixing device for carriage door panels. Background Art

[0002] In the field of emergency rescue equipment, the door panels of vehicles usually adopt door limiters to realize the positioning restriction after the door panels are opened. Some carriages adopt the equipment structure form fixed on the vehicle chassis. After the carriage door panels are opened, the door panels need to be fixed to prevent the door panels from closing unrestrictedly under the action of external factors such as natural wind or external force, which may cause accidents. The door limiter usually includes a bending part, a Z-shaped connecting part and a flat plate. The flat plate is fixedly connected to the carriage, the bending part is fixedly connected to the door panel, and one end of the Z-shaped connecting part is hinged to the flat plate, and the other end is slidably connected to the chute of the bending part. When the door panel is opened to the maximum angle, the end of the Z-shaped connecting part moves along the chute and falls into the round socket on one side of the chute, finally realizing the fixing of the door panel. However, under the action of external force, the door panel has a tendency to rotate, which may cause the end of the Z-shaped connecting part to jump out of the round socket, resulting in the unrestricted closing of the door panel. At the same time, in the prior art, since there is a certain distance between the door limiter on the door panel and the floor inside the carriage after the door panel is opened, and equipment and facilities are often installed on both sides of the carriage, it is necessary for the operator to use a ladder to board the carriage and then manually rotate the butterfly nut on the door limiter to fix the sliding shaft in the round socket to fix the door panel. Therefore, this operation is inconvenient and has certain safety risks. Summary of the Utility Model

[0003] Therefore, the technical problem to be solved by the present utility model is to overcome the problems in the prior art that the operator needs to board the carriage to fix the door panel, resulting in inconvenient operation, and the door limiter is far from the carriage floor, there is a safety risk. Furthermore, a locking and fixing device for carriage door panels is provided, which overcomes the problem that the door limiter is far from the carriage floor. The operator does not need to board the carriage and can fix the sliding shaft of the door limiter, and can complete the positioning and unlocking of the door panel under the vehicle, reducing the operation difficulty and potential safety hazards.

[0004] To solve the above technical problem, the present utility model provides a locking and fixing device for carriage door panels, which is arranged on the inner side of the carriage door panel. A bending plate is provided on the inner side of the carriage door panel, and a chute is provided on the bending plate. A sliding shaft is slidably arranged in the chute. When the door panel is opened to the maximum angle, the sliding shaft is located in the round socket at the end of the chute and limits the door panel, including,

[0005] A handle rod, which has a connecting end and an operating end. The connecting end is rotatably connected to the door panel, and the height of the operating end matches the hand of an operator located on the ground;

[0006] A locking hook, which is connected to the connection end. The locking hook is configured to be able to rotate with the handle rod after the door panel is opened to the maximum angle and hook the sliding shaft located in the circular socket to fix the sliding shaft.

[0007] In an embodiment of the present invention, the handle rod is vertically arranged, and the operating end is arranged lower than the connection end.

[0008] In an embodiment of the present invention, it further includes a base provided with a groove. The base is fixedly connected to the side surface or the door panel. The base is provided with connection holes on both sides of the groove, and the connection end passes through the connection holes and is rotatably connected to the base.

[0009] In an embodiment of the present invention, it further includes a spring sleeved outside the connection end. Both the spring and the locking hook are located in the groove. The spring is in a compressed state and presses the locking hook along one side of the base.

[0010] In an embodiment of the present invention, the part of the locking hook located outside the groove is provided with a locking hook groove and a guiding inclined surface. The guiding inclined surface is arranged on one side of the locking hook groove relative to the connection end.

[0011] In an embodiment of the present invention, the connection end is provided with a threaded section. After the threaded section passes through the connection hole, it is threadedly connected to a nut.

[0012] In an embodiment of the present invention, the locking hook is provided with a square through hole, and the connection end is provided with a connection section. The cross-section of the connection section is in imitation matching with the square through hole, and the connection section passes through the square through hole.

[0013] In an embodiment of the present invention, it further includes a fixing seat provided with a round hole. The fixing seat is fixedly connected to the side surface or the door panel, and the handle rod passes through the round hole.

[0014] In an embodiment of the present invention, the connection end is vertically arranged with the operating end.

[0015] In an embodiment of the present invention, the operating end is provided with a gripping head, and the gripping head is arranged to be circular.

[0016] The above technical solution of the present invention has the following beneficial effects compared with the prior art:

[0017] The locking and fixing device for the carriage door panel described in the present utility model, after the door panel is opened to the maximum angle, drives the locking hook to hook the sliding shaft located in the circular socket by rotating the handle rod, preventing the sliding shaft from jumping out of the circular socket and thus causing the door panel to close unrestrictedly, achieving further positioning of the door panel; by setting the handle rod to drive the locking hook to rotate, the problem that the locking hook is far from the carriage floor is overcome, greatly reducing the operation difficulty. The operator can complete positioning and unlocking without boarding the carriage, reducing potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments of the present utility model in conjunction with the drawings, where

[0019] Figure 1 is a schematic structural diagram of the locking and fixing device for the carriage door panel in a preferred embodiment of the present utility model.

[0020] Figure 2 is Figure 1 a schematic structural diagram of the top view of the locking hook and the base of the shown carriage door panel locking and fixing device.

[0021] Explanation of reference numerals in the drawings: 1. Handle rod; 11. Connection end; 12. Operation end; 13. Grip head; 2. Locking hook; 21. Locking hook groove; 22. Guide inclined surface; 23. Square through hole; 3. Base; 31. Groove; 4. Spring; 5. Nut; 6. Bolt; 7. Fixed seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited do not limit the present utility model.

[0023] Embodiment

[0024] Referring to Figure 1 as shown, in an embodiment of the present utility model, a locking and fixing device for a carriage door panel is provided inside the carriage door panel and is arranged close to the door limiter. The door limiter includes a bent plate, a Z-shaped connecting piece, and a flat plate. The flat plate is fixedly connected to the carriage and is located at the edge of the carriage door. The bent plate is arranged inside the door panel. The bent plate is provided with a sliding groove, and circular sockets are provided at both ends of the sliding groove. The two ends of the Z-shaped connecting piece are provided with sliding shafts. One sliding shaft slides in the sliding groove, and the other sliding shaft is hinged to the flat plate. When the door panel is closed, the sliding shaft slides into the circular socket at the far end of the sliding groove. When the door panel is opened to the maximum angle, the sliding shaft slides into the circular socket at the near end of the sliding groove so that the sliding shaft can no longer slide relative to the sliding groove, thereby achieving positioning of the door panel. The locking and fixing device for the carriage door panel includes

[0025] The handle rod 1 is provided with a connection end 11 and an operation end 12. The handle rod 1 has a certain length to overcome the problem that the door limiter is far from the carriage floor. The locking and fixing device of the carriage door panel is arranged inside the carriage door panel. The connection end 11 is rotatably connected to the door panel; the height of the operation end 12 matches the hand of the operator on the ground, so that the operator under the vehicle can hold and rotate the operation end 12;

[0026] The locking hook 2 is connected to the connection end 11. The locking hook 2 is arranged to be able to rotate with the handle rod 1 after the door panel is opened to the maximum angle and hook the sliding shaft in the proximal round socket of the chute to fix the sliding shaft and prevent the sliding shaft from jumping out of the round socket. Specifically, the position relationship between the locking hook 2 and the sliding shaft is determined as follows. When the locking and fixing device of the carriage door panel is installed, the upper plane of the locking hook 2 is attached to the lower plane of the chute of the door limiter, and a small gap for relative movement is left between them. When the door panel is opened to the maximum angle position, the sliding shaft of the door limiter is placed in the locking hook groove 21 of the locking and fixing device of the carriage door panel. Based on this, the installation positions of the base 3, the locking hook 2, the handle rod 1 and the door limiter are determined.

[0027] In an embodiment of the present invention, referring to Figure 1 As shown, the handle rod 1 is vertically arranged. Specifically, the connection end 11 is vertically arranged, and the operation end 12 is arranged lower than the connection end 11, which is convenient for the operator to hold the operation end 12.

[0028] In an embodiment of the present invention, referring to Figure 1 As shown, in order to facilitate the connection of the handle rod 1, it further includes a base 3 provided with a groove 31. The base 3 is fixedly connected to the door panel by four bolts 6. The base 3 is provided with connection holes on both sides of the groove 31. The connection end 11 passes through the connection holes to rotatably connect the base 3, and a limiting structure is connected after the connection end 11 passes through the connection holes to prevent the handle rod 1 from falling off the base 3 downward.

[0029] In an embodiment of the present invention, referring to Figure 1 As shown, it further includes a spring 4 sleeved outside the connection end 11. The spring 4 and the locking hook 2 are both located in the groove 31. The spring 4 is always in a compressed state and presses the locking hook 2 upward along one side of the base 3. The purpose is to ensure that the upper plane of the locking hook 2 always closely adheres to the lower plane of the chute of the door limiter, ensuring that the locking hook 2 can hook the sliding shaft every time it rotates. The spring 4 is set as a torsion spring, and the hooks at both ends of the torsion spring are used to press the locking hook 2 and the base 3.

[0030] In an embodiment of the present invention, referring to Figure 2As shown, the part of the locking hook 2 located outside the groove 31 is provided with a locking hook groove 21 and a guiding inclined surface 22. The locking hook groove 21 is used for limiting and locking the sliding shaft, and the guiding inclined surface 22 is used for guiding and avoiding the sliding shaft. The guiding inclined surface 22 is arranged on one side of the locking hook groove 21 relative to the connecting end 11. When the locking hook 2 rotates to lock the sliding shaft, the guiding inclined surface 22 first slides over the sliding shaft until the locking hook groove 21 hooks the sliding shaft.

[0031] In an embodiment of the present invention, referring to Figure 1 As shown, the connecting end 11 is provided with a threaded section, the limiting structure is set as a nut 5, the threaded section passes through the connecting hole and is threadedly connected to the nut 5, and finally the nut 5 abuts against the base 3.

[0032] In an embodiment of the present invention, referring to Figure 2 As shown, for the convenience of assembly, the locking hook 2 is provided with a square through hole 23, the connecting end 11 is provided with a connecting section, the cross section of the connecting section is square and is in imitation matching with the square through hole 23. After the square through hole 23 is aligned with the connecting holes on both sides of the base 3, the connecting section passes through the square through hole 23 and the connecting hole, so that the locking hook 2 rotates with the handle rod 1.

[0033] In an embodiment of the present invention, referring to Figure 1 As shown, it further includes a fixing seat 7 provided with a round hole. The fixing seat 7 is fixedly connected to the door panel by bolts. The connecting end 11 passes through the round hole and is used for fixing the handle rod 1 to prevent the handle rod from shaking.

[0034] In an embodiment of the present invention, referring to Figure 1 As shown, the connecting end 11 is perpendicularly arranged with the operating end 12, so as to hold and rotate the handle rod 1 by holding the operating end 12, and the connecting end 11 is longer than the operating end 12.

[0035] In an embodiment of the present invention, referring to Figure 1 As shown, the operating end 12 is provided with a holding head 13. The holding head 13 is set as a circle, and the holding head 13 can improve the holding comfort and prevent the hand of the operator from sliding.

[0036] The working principle of the locking and fixing device for the carriage door panel of the present invention is:

[0037] After the door panel is opened to the maximum angle, the sliding shaft slides into the proximal circular socket of the sliding groove to position the door panel. The operator stands under the vehicle and manually rotates the operating end 12 of the handle rod 1 to drive the locking hook 2 to rotate, so that the guiding inclined surface 22 slides over the sliding shaft. Finally, the locking hook groove 21 hooks the sliding shaft to position the sliding shaft and prevent it from jumping out of the circular socket, thereby realizing the double positioning of the door panel. When closing the door panel, first rotate the handle rod 1 reversely by a certain angle to make the locking hook groove 21 disengage from the sliding shaft to release the positioning of the sliding shaft, rotate the door panel to make the sliding shaft jump out of the circular socket, and then close the door panel completely.

[0038] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. A locking and fixing device for a carriage door panel, which is arranged on the inner side of the carriage door panel. A bending plate is also arranged on the inner side of the carriage door panel. The bending plate is provided with a sliding groove, and a sliding shaft is slidably arranged in the sliding groove. When the door panel starts to open to the maximum angle, the sliding shaft is located in the circular cavity at the end of the sliding groove and limits the door panel. It is characterized in that, Comprising, A handle rod, which is provided with a connection end and an operation end. The connection end is rotatably connected to the door panel, and the height of the operation end matches the hand of an operator standing on the ground; A lock hook, which is connected to the connection end. The lock hook is configured to be able to rotate with the handle rod after the door panel is opened to the maximum angle and hook the sliding shaft located in the circular socket to fix the sliding shaft.

2. The locking and fixing device for a carriage door panel according to claim 1, characterized in that, The handle rod is vertically arranged, and the operation end is arranged lower than the connection end.

3. A locking and fixing device for a carriage door panel according to claim 1, characterized in that, It further includes a base provided with a groove. The base is fixedly connected to the door panel. The base is provided with connection holes on both sides of the groove, and the connection end passes through the connection holes to rotatably connect to the base.

4. A locking and fixing device for a carriage door panel according to claim 3, characterized in that It further includes a spring sleeved outside the connection end. Both the spring and the lock hook are located in the groove. The spring is in a compressed state and presses the lock hook along one side of the base.

5. The locking and fixing device for a carriage door panel according to claim 3, wherein The part of the lock hook located outside the groove is provided with a lock hook groove and a guiding inclined surface. The guiding inclined surface is arranged on one side of the lock hook groove relative to the connection end.

6. The locking and fixing device for a carriage door panel according to claim 3, characterized in that, The connection end is provided with a threaded section, and the threaded section passes through the connection hole and is threadedly connected to a nut.

7. A locking and fixing device for a carriage door panel according to claim 1, characterized in that, The lock hook is provided with a square through hole, and the connection end is provided with a connection section. The cross-section of the connection section is in imitation matching with the square through hole, and the connection section passes through the square through hole.

8. A locking and fixing device for a carriage door panel according to claim 1, characterized in that, It further includes a fixing seat provided with a round hole. The fixing seat is fixedly connected to the door panel, and the handle rod passes through the round hole.

9. The locking and fixing device for a carriage door panel according to claim 1, characterized in that, The connection end is perpendicularly arranged to the operation end.

10. The locking and fixing device for a carriage door panel according to claim 1, characterized in that, The operation end is provided with a gripping head, and the gripping head is arranged to be circular.

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