Rear unloading carriage door and carriage

Abstract

The rear unloading carriage door comprises a lower carriage plate and a pair of carriage stand columns vertically arranged on the lower carriage plate, the lower portions of the carriage stand columns are transversely connected with a hanging door upper cross beam through hinges, a set of hinged doors are installed between the upper portions of the carriage stand columns through hinged door hinges, and the hinged doors are hinged to the upper portions of the carriage stand columns. A hanging door is mounted on the lower side of the hanging door upper cross beam through hanging door hinges; hanging door rotating limiting shafts are arranged on the two sides of the bottom of the hanging door, and hook assemblies used for hooking the hanging door rotating limiting shafts are arranged at the bottoms of the pair of carriage stand columns. According to the rear unloading compartment door, the compartment door can be completely opened or vertically and separately opened according to different cargoes, and the flowing speed of the cargoes can be controlled by controlling the opening angle of the hanging door.

Description

Technical Field

[0001] The utility model relates to the field of rear dump trucks, specifically, to a rear dump truck door and a carriage. Background Art

[0002] A semi-trailer is a heavy transportation vehicle that connects a cargo carriage to a power truck head through a kingpin. Generally, a rear carriage door is provided at the rear end of the semi-trailer carriage. Common opening methods of the rear carriage door include double-leaf doors and flip doors. Among them, the flip door-designed carriage door can be flipped up or down, which is convenient for loading and unloading and transporting goods. The double-leaf door-designed carriage door is like two large open wings, which can make the loading and unloading of goods simple and fast.

[0003] The invention patent application with the application publication number of CN118386975A discloses a semi-trailer carriage door structure, including a door frame, and further including fixing blocks. Two fixing blocks are symmetrically fixed on the inner walls of both sides of the door frame. Opposite surfaces of the two fixing blocks and the top of the door frame are rotatably connected with double-leaf door panels; a flip door panel, which is rotatably installed on the inner wall of the bottom of the door frame, and the top surface of the flip door panel is in contact with the bottom surfaces of the two double-leaf door panels. Three rotation plates are rotatably connected to the inner surface of the flip door panel at equal intervals, and an extension mechanism for synchronously rotating the three rotation plates is arranged on the inner surface of the flip door panel; lock catch rings, two lock catch rings are symmetrically fixed on the outer surfaces of both sides of the door frame, and a locking mechanism cooperating with the lock catch rings is arranged on the outer surface of one end of the flip door panel away from the rotation plate. This semi-trailer carriage door structure is convenient for releasing the rotational locking and limiting effect between the flip door panel and the door frame, and is convenient for synchronously unfolding and storing the three rotation plates, improving the convenience of loading and unloading personnel getting on and off the vehicle and loading and unloading goods, thereby improving the loading and unloading efficiency of loading and unloading goods. However, this structure is complex and not convenient for independently controlling the flip door panel and the double-leaf door panels. Summary of the Utility Model

[0004] In order to be able to fully open or separately open the upper and lower parts of the carriage door according to different goods, and also be able to control the flow rate of goods by controlling the opening angle of the hanging door, the technical solution adopted by the utility model is: a rear dump truck door, including a lower carriage plate and a pair of carriage columns vertically arranged on the lower carriage plate. The lower parts of the pair of carriage columns are horizontally connected with an upper hanging door beam through hinge hinges, and a group of double-leaf doors are installed between the upper parts of the carriage columns through double-leaf door hinges. A hanging door is installed on the lower side of the upper hanging door beam through a hanging door hinge;

[0005] Rotating limit shafts of the hanging door are arranged on both sides of the bottom of the hanging door, and a hook assembly for hooking the rotating limit shafts of the hanging door is arranged at the bottom of the pair of carriage columns.

[0006] Based on the above, in order to facilitate the locking and unlocking of the carriage door, a vertical carriage door lock is provided on the double-leaf door, and a horizontal carriage door lock is provided on the hanging door. Specifically, the vertical carriage door lock and the horizontal carriage door lock can be selected as the commonly used rotary rod type carriage door locks for refrigerated trucks.

[0007] Based on the above, the height value of the hanging door is less than the height value of the double-leaf door.

[0008] Based on the above, in order to facilitate the control of the opening angle of the hanging door, the hook assembly includes a hook base body hinged to the bottom of the carriage column, and a plurality of card slots for hooking the rotary limit shaft of the hanging door are provided on the hook base body.

[0009] Based on the above, in order to facilitate the adjustment of the opening angle, a plurality of the card slots are arranged along the length direction of the hook base body.

[0010] Based on the above, in order to facilitate the operation, the card slot is a T-shaped card slot with an outer opening.

[0011] The present utility model also provides a carriage, and the above-mentioned rear unloading carriage door is installed on the carriage.

[0012] The present utility model has substantial features and progress compared with the prior art. Specifically, for the rear unloading carriage door and the carriage provided by the present utility model, the hanging door and the double-leaf door are separately controlled by the carriage door locks of the refrigerated truck, and the multifunctionality and convenience of loading can be realized according to different loaded goods. The opening mechanism is an upper double-leaf door structure and a lower hanging door structure. Hook mechanisms for controlling the opening angle of the hanging door are arranged on both sides of the hanging door. According to different goods. At the same time, since the upper cross beam of the hanging door for installing the hanging door is connected to the carriage column through a pair of detachable hinge hinges, the rear door can realize the functions of full opening and upper and lower separate opening. The lower opening can realize the control of the opening angle of the hanging door, so as to control the flow rate of the goods. The structure of the rear unloading carriage door is simple and the use is convenient. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the carriage door in the rear unloading carriage door and the carriage provided by the present utility model.

[0014] Figure 2 is a schematic side view of the carriage door in the rear unloading carriage door and the carriage provided by the present utility model.

[0015] In the figure: 1. Carriage column; 2. Double-leaf door; 3. Vertical carriage door lock; 4. Upper cross beam of the hanging door; 5. Hook assembly; 6. Hanging door; 7. Horizontal carriage door lock; 8. Lower carriage panel; 9. Hanging door hinge; 10. Rotary limit shaft of the hanging door; 11. Card slot; 12. Hook base body; 13. Hinge hinge. Detailed Embodiments

[0016] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0017] Embodiment 1

[0018] This embodiment provides a rear-dumping carriage door, as Figure 1 , Figure 2 shown, including a lower carriage plate 8 and a pair of carriage columns 1 vertically arranged on the lower carriage plate 8. The lower parts of the pair of carriage columns 1 are horizontally connected by a hinge hinge 13 with an upper cross beam 4 of the hanging door. A group of double-leaf doors 2 are installed between the carriage columns 1 above the upper cross beam 4 of the hanging door through double-leaf door hinges. The upper cross beam 4 of the hanging door is installed with a hanging door 6 through a hanging door hinge 9, and the hanging door is located below the upper cross beam of the hanging door.

[0019] Rotating limit shafts 10 of the hanging door are arranged on both sides of the bottom of the hanging door 6, and a hook assembly 5 for hooking the rotating limit shafts 10 of the hanging door is arranged at the bottom of the pair of carriage columns 1.

[0020] In order to facilitate locking and opening of the carriage door, a vertical carriage door lock 3 is arranged on the double-leaf door 2, and a horizontal carriage door lock 7 is arranged on the hanging door 6. Specifically, the vertical carriage door lock and the horizontal carriage door lock can select the common rotary rod type carriage door lock for refrigerated trucks.

[0021] In order to facilitate control of the opening angle of the hanging door, the hook assembly 5 includes a hook base body 12 hinged to the bottom of the carriage column 1, and a plurality of card slots 11 for hooking the rotating limit shafts 10 of the hanging door are arranged on the hook base body 12.

[0022] Embodiment 2

[0023] This embodiment provides a rear-dumping carriage door, and the main difference from Embodiment 1 is that in this embodiment, the height value of the hanging door is less than the height value of the double-leaf door.

[0024] Embodiment 3

[0025] This embodiment provides a rear-dumping carriage door, and the main difference from Embodiment 1 is that in this embodiment, in order to facilitate adjustment of the opening angle, a plurality of the card slots are arranged along the length direction of the hook base body.

[0026] For the convenience of operation, the card slot is a T-shaped card slot with an outer opening.

[0027] Embodiment 4

[0028] This embodiment provides a vehicle equipped with the rear-dumping carriage door described in Embodiment 1 or Embodiment 2 or Embodiment 3.

[0029] Specifically, the specific operation of the hanging door opening function is as follows: When the rear-dumping vehicle lifts and loads or unloads goods, the rear hanging door adjusts the opening angle according to the different matching positions of the hook assemblies on both sides and the hanging door rotation limit shaft, so as to achieve the speed of unloading goods. When unloading goods, the goods squeeze and expand the hanging door, and the draw hook is in a tightened state to prevent the goods from expanding and opening the door at an angle. When dealing with residual goods or loading and unloading goods from the hanging door, the hanging door droops and closes under the influence of gravity. The hanging door rotation limit shaft directly slides to the support state, and the draw hook is in the support state. The draw hook supports the rear door so that it will not close.

[0030] The specific operation of the function of fully opening the rear door is as follows: Since both ends of the upper cross beam of the hanging door are detachably connected to the carriage column through hinge hinges, when one-sided hinge hinge is disassembled, the hanging door can be rotated with the upper cross beam of the hanging door to achieve the purpose of completely opening the lower door left and right. After cooperating with the upper double-leaf door to open, the overall opening of the carriage door is realized, which is convenient for loading goods.

[0031] 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: still can modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A rear unloading compartment door, characterized in that: It comprises a lower compartment plate and a pair of compartment columns vertically arranged on the lower compartment plate, the lower parts of the pair of compartment columns are transversely connected to a hanging door upper cross beam through hinges, a group of split doors are installed between the upper parts of the compartment columns through split door hinges, and a hanging door is installed on the lower side of the hanging door upper cross beam through a hanging door hinge; The two sides of the bottom of the hanging door are provided with hanging door rotation limiting shafts, and the two sides of the bottom of a pair of carriage columns are provided with hook components for hooking the hanging door rotation limiting shafts.

2. The rear unloading compartment door according to claim 1, characterized in that: The double doors are provided with vertical carriage door locks, and the hanging door is provided with horizontal carriage door locks.

3. The rear unloading compartment door according to claim 2, characterized in that: The height value of the hanging door is smaller than the height value of the double-leaf door.

4. The rear unloading compartment door according to claim 1, 2 or 3, characterized in that: The hook assembly comprises a hook base which is hinged to the bottom of the carriage column, and a plurality of slots for hooking the rotation limiting shaft of the hanging door are arranged on the hook base.

5. The rear unloading compartment door according to claim 4, characterized in that: A plurality of the card slots are arranged along the length direction of the hook base.

6. The rear unloading compartment door according to claim 5, characterized in that: The card slot is a T-shaped card slot with an outer opening.

7. A carriage, characterized in that: The carriage is equipped with a rear unloading compartment door as described in any one of claims 1 to 6.

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