Sliding door structure of refrigerator car
Through the design of guide rails and locking devices on the refrigerated truck, the problem of inconvenient unloading of refrigerated trucks on narrow roads is solved, and the smooth sliding and sealing of the side doors are achieved, which improves the unloading convenience and service life.
Patent Information
- Application Number
- CN202422496766.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-16
AI Technical Summary
It is inconvenient to unload existing refrigerated trucks on narrow roads, especially when small refrigerated trucks are unloading goods at short distances and multiple points in the city. The door design cannot effectively utilize the narrow space, resulting in difficulty in handling goods.
The sliding mechanism and locking device are adopted, including the upper guide rail, the lower guide rail, the sliding part, the connecting rod and the locking device. The angle adjustment and sealing of the side door are achieved through the mechanical structure, and combined with the push-pull grip and the inner frame, ensuring that the side door slides smoothly and seals in a narrow space.
The refrigerated truck side doors are smoothly sliding and sealed in a narrow space, improving unloading convenience, extending service life, and ensuring air conditioning sealing.
Smart Images
Figure CN223148174U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigerated trucks, and particularly relates to a sliding door structure of a refrigerated truck. Background Art
[0002] Existing refrigerated trucks can be divided into large refrigerated trucks and small refrigerated trucks. Large refrigerated trucks are generally van trucks with independent refrigeration units and relatively high prices. The doors are generally arranged at the rear side of the carriage and need to be pulled open to both sides. However, small refrigerated trucks used for short-distance multi-point unloading within the city often need to shuttle through some relatively narrow roads. When the refrigerated truck stops, only people can usually pass on both sides, and it is very inconvenient to carry the goods stored in the carriage. Content of the Utility Model
[0003] The purpose of the utility model is to provide a sliding door structure of a refrigerated truck to solve the problems existing in the above-mentioned prior art.
[0004] The above technical purpose of the utility model is achieved through the following technical solutions:
[0005] A sliding door structure of a refrigerated truck includes a carriage with an opening on one side, a side door arranged at the opening, and a sliding mechanism for slidably mounting the side door on the carriage. A door frame is fixedly installed at the opening of the carriage. The sliding mechanism includes an upper guide rail, a lower guide rail, a first sliding part, and a second sliding part. The upper guide rail is fixedly installed above the door frame, and the lower guide rail is fixedly installed below the door frame. Both the upper guide rail and the lower guide rail are arranged at intervals from the door frame. The first sliding part is slidably mounted on the upper guide rail. One end of a main linkage rod is rotatably installed at the bottom end of the first sliding part. A moving rod is vertically arranged at the bottom of the other end of the main linkage rod. The moving rod is rotatably connected to the main linkage rod. The moving rod is fixedly installed on the front side of the side door. One end of a secondary linkage rod is rotatably installed at the bottom of the moving rod. The other end of the secondary linkage rod is rotatably installed with the second sliding part. The second sliding part is slidably mounted on the lower guide rail. A rotating device is hinged on the moving rod, and a door rod is bolted and fixed on the rotating device. A locking device is fixedly installed at the middle position of the left end of the front side of the side door. The locking device is used to cooperate with the door rod to lock the side door.
[0006] By adopting the above technical scheme, a door frame is provided on the opening of the car body, and guide rails are installed above and below the door frame, wherein one end of the main connecting rod is horizontally provided at the bottom end of the sliding part of the upper guide rail, and a moving rod is vertically provided at the other end of the main connecting rod, so that the moving rod can control the rotation angle of the side door, so that it can rotate to a certain extent during the sliding process, thereby sliding into the inwardly recessed door frame and fitting tightly therewith to achieve a sealing effect. The first sliding part is bolted to two pulleys on the surface in contact with the guide rail, and a clamping ring is screwed on the side of the side door away from the car body, and the position of the moving rod is limited by the clamping ring, so that it can drive the side door to slide along the guide rail during the sliding process to achieve left and right lateral movement, and the hinged rotating device on the moving rod can cooperate with the locking device on the side door to achieve locking after moving into place. After the car door is set to one side of the refrigerated truck, while ensuring its sealing, the convenience is also improved.
[0007] In a further embodiment, an inner frame matching the door frame is fixedly installed on the rear periphery of the side door, and the inner frame is used to make the side door airtight from the vehicle compartment. A first auxiliary part and a second auxiliary part are bolted and fixed to the upper end of the side door. The first auxiliary part and the second auxiliary part have the same shape, and the first auxiliary part and the second auxiliary part are symmetrically arranged with the moving rod as the axis. A through hole is provided in the middle position of the top of the first auxiliary part, and one end of the first connecting rod is rotatably installed on the first auxiliary part, and the other end of the first connecting rod is rotatably connected to the left end of the first sliding part.
[0008] By adopting the above technical solution, since the refrigerated truck needs to be kept sealed to prevent internal cold air leakage from affecting cargo storage, an inner frame corresponding to the door frame is also provided on the side of the side door close to the interior of the car. The first auxiliary part and the second auxiliary part on the side door mainly limit the rotation angle of the side door. When there is only one moving rod responsible for adjusting the angle and moving the side door, the angle needs to be adjusted back and forth each time the door is closed. By adding auxiliary parts at both ends of the side door, it can be ensured that the side door changes according to a predetermined arc.
[0009] In a further embodiment, the locking device includes a mounting seat, a rotating rod and a hook lock, the mounting seat is bolted and fixed on the side door, a receiving groove is provided on the front side of the mounting seat, a return spring is provided at the bottom end of the receiving groove, a through hole is provided on the left side of the hook lock, and the hook lock is rotatably installed in the receiving groove of the mounting seat through the rotating rod.
[0010] By adopting the above technical solution, the locking device with a purely mechanical structure is simple and reliable, and the return spring inside the accommodating groove will continuously squeeze the bottom end of the hook lock to the side away from the car body, so that it is always tightly fastened. After the hook lock is opened, the door rod can be rotated to the side of the locking device, and the upper hook part of the hook lock can be used to hook the door rod.
[0011] In a further embodiment, a push-pull grip is fixedly installed on the side door.
[0012] By adopting the above technical solution, since a small refrigerated truck needs to transport the goods stored inside for short distances and at multiple points, it is also necessary to frequently pull the door of the refrigerated truck. Holding the moving rod to pull the door will, on the one hand, affect the angle adjustment of the side door, and on the other hand, affect the service life of the moving rod. Therefore, through the push-pull grip, the door can be pushed and pulled in a more convenient way.
[0013] In a further embodiment, a guiding and sliding device is spacedly arranged at the lower right end of the door frame. The guiding and sliding device is fixedly bolted to the carriage. The guiding and sliding device includes a pulley and a mounting seat. The pulley is rotatably installed on the mounting seat. The pulley is used to make the side door slide more smoothly during the left-right sliding process.
[0014] By adopting the above technical solution, the guiding and sliding device is mainly because during the process of the side door sliding from right to left, the rotationally installed main linkage rod, secondary linkage rod, first linkage rod and second linkage rod will adjust the angle of the side door. Since the door frame is recessed inward, and an inner frame is also provided on the side of the side door close to the carriage, while ensuring the sealing effect, this also causes the side door to have to be pulled out of the carriage first and then slide to the right. The linkage rod is responsible for adjusting the angle of the side door, and the guiding and sliding device can make the side door slide smoothly.
[0015] In a further embodiment, a limiting device is screwed to the right end of one side at the opening of the carriage.
[0016] By adopting the above technical solution, the limiting device on the carriage can control the position of the side door.
[0017] In a further embodiment, a first limiting block is bolted to the left end of the upper guide rail, and a first limiting block is also bolted to the right end of the upper guide rail.
[0018] In a further embodiment, a second limiting block is bolted to the left end of the lower guide rail, and a second limiting block is also bolted to the right end of the lower guide rail.
[0019] By adopting the above technical solution, the limiting blocks on the upper guide rail and the lower guide rail can also play an auxiliary limiting role.
[0020] In summary, the present utility model has the following beneficial effects:
[0021] 1. Through the arrangement of the moving rod and the inner frame, the moving rod can control the rotation angle of the side door, enabling it to rotate to a certain extent during the sliding process, so as to slide into the recessed door frame, achieving the effect of closely fitting the side door with the door frame;
[0022] 2. By setting the locking device, the reset spring inside the accommodating groove can continuously squeeze the bottom end of the hook lock towards the side away from the carriage, and make it always tightly fastened in a simple and reliable mechanical way, achieving the effect of firmly locking the door rod with the hook lock.
[0023] 3. By setting the push-pull handle, when transporting goods at multiple points over a short distance, it can avoid frequently pulling the door of the refrigerated truck by holding the moving rod, which affects its service life, and can achieve the effect of more conveniently pushing and pulling the door with the push-pull handle. Description of the Drawings
[0024] Figure 1 is the overall schematic diagram of the sliding door structure of a refrigerated truck of the present utility model;
[0025] Figure 2 is the schematic diagram showing the structure of the locking device in the sliding door structure of a refrigerated truck of the present utility model;
[0026] Figure 3 is the schematic diagram showing the structure of the inner frame in the sliding door structure of a refrigerated truck of the present utility model;
[0027] Figure 4 is the schematic diagram showing the structure of the first limiting block in the upper guide rail in the sliding door structure of a refrigerated truck of the present utility model;
[0028] Figure 5 is the schematic diagram showing the structure of the second limiting block in the lower guide rail in the sliding door structure of a refrigerated truck of the present utility model.
[0029] In the figures, 1, carriage; 2, side door; 3, sliding mechanism; 31, upper guide rail; 32, lower guide rail; 33, first sliding part; 34, second sliding part; 4, door frame; 5, main linkage rod; 6, sub-linkage rod; 7, moving rod; 8, inner frame; 9, first auxiliary part; 10, second auxiliary part; 11, locking device; 111, mounting seat; 112, rotating rod; 113, hook lock; 114, reset spring; 12, push-pull handle; 13, guiding and sliding device; 14, limiting device; 15, first limiting block; 16, second limiting block. Detailed Embodiment
[0030] The following further describes the present utility model in detail with reference to the drawings.
[0031] Among them, the same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1In the directions, the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this specification, "a plurality of" means two or more unless otherwise specifically defined.
[0032] Embodiment:
[0033] As Figures 1 - 5 As shown in the figure, a sliding door structure of a refrigerated truck includes a carriage 1 with an opening on one side, a side door 2 arranged at the opening, and a sliding mechanism 3 for slidably mounting the side door 2 on the carriage 1. A limiting device 14 is screwed to the right end of one side of the opening of the carriage 1. A door frame 4 is fixedly installed at the opening of the carriage 1. A guiding and sliding device 13 is arranged at intervals at the lower right side of the right side of the door frame 4. The guiding and sliding device 13 is fixedly bolted to the carriage 1. The guiding and sliding device 13 includes a pulley and a mounting seat 111. The pulley is rotatably installed on the mounting seat 111. The pulley is used to make the side door 2 move more smoothly during left and right sliding. A push-pull handle 12 is fixedly installed on the side door 2. An inner frame 8 matching the door frame 4 is fixedly installed on the rear peripheral edge of the side door 2. The inner frame 8 is used to make the side door 2 airtight with the carriage 1. The sliding mechanism 3 includes an upper guide rail 31, a lower guide rail 32, a first sliding part 33 and a second sliding part 34. The upper guide rail 31 is fixedly installed above the door frame 4. A first limiting block 15 is bolted to the left end of the upper guide rail 31, and a first limiting block 15 is bolted to the right end of the upper guide rail 31. The lower guide rail 32 is fixedly installed below the door frame 4. A second limiting block 16 is bolted to the left end of the lower guide rail 32, and a second limiting block 16 is bolted to the right end of the lower guide rail 32. Both the upper guide rail 31 and the lower guide rail 32 are arranged at intervals with the door frame 4. The first sliding part 33 is slidably installed on the upper guide rail 31. Through the sliding mechanism 3 and the guiding and sliding device 13, the side door 2 can move more smoothly along the guide rail left and right. The push-pull handle 12 makes it more convenient for people to exert force when opening or closing the door. The limiting device 14 arranged on the carriage 1 and the limiting blocks arranged in both the upper guide rail 31 and the lower guide rail 32 can ensure that the side door 2 will not deviate from the preset position during movement. This design of arranging the door on one side of the carriage 1 effectively solves the problem of difficult unloading in narrow sections. The driver can stop the side door 2 at the door where goods need to be loaded and unloaded, and then carry the goods above to complete unloading.
[0034] As Figures 1 - 3As shown, a first auxiliary member 9 and a second auxiliary member 10 are bolted and fixed to the upper end of the side door 2. The first auxiliary member 9 and the second auxiliary member 10 have the same shape. One end of the main linkage rod 5 is rotatably installed at the bottom end of the first sliding portion 33. A moving rod 7 is vertically provided at the bottom of the other end of the main linkage rod 5. The moving rod 7 is rotatably connected to the main linkage rod 5. The moving rod 7 is fixedly installed on the front side of the side door 2. One end of a secondary linkage rod 6 is rotatably installed at the bottom of the moving rod 7. The other end of the secondary linkage rod 6 is rotatably installed with a second sliding portion 34. The second sliding portion 34 is slidably installed on the lower guide rail 32. A rotating device is hinged on the moving rod 7. A door rod is bolted and fixed to the rotating device. The first auxiliary member 9 and the second auxiliary member 10 are symmetrically arranged with the moving rod 7 as the axis. A through hole is provided at the middle position of the top of the first auxiliary member 9. One end of a first linkage rod is rotatably installed on the first auxiliary member 9. The other end of the first linkage rod is rotatably connected to the left end of the first sliding portion 33. A locking device 11 is fixedly installed at the middle position of the left end of the front side of the side door 2. The locking device 11 is used to cooperate with the door rod to lock the side door 2. The locking device 11 includes a mounting seat 111, a rotating rod 112, and a hook lock 113. The mounting seat 111 is bolted and fixed to the side door 2. A receiving groove is provided on the front side of the mounting seat 111. A return spring 114 is provided at the bottom end of the receiving groove. A through hole is provided on the left side of the hook lock 113. The hook lock 113 is rotatably installed in the receiving groove of the mounting seat 111 through the rotating rod 112. Through the setting of the first auxiliary member 9 and the second auxiliary member 10, the stability of the side door 2 during angle adjustment can be further improved, and there will be no large deviation. The locking device 11 can use the cooperation of the return spring 114, the rotating rod 112, and the hook lock 113 to lock the door rod placed above the receiving groove with the hooked portion of the hook lock 113. After locking, the side door 2 will not move back and forth randomly. Since the side door 2 is itself set in the door frame 4 and has a certain height difference with the carriage 1 itself.
[0035] Specific implementation process: A fixing ring is provided on the front side of the side door 2, and the moving rod 7 is inserted therein. The function of the fixing ring is to fix the moving rod 7 and the side door 2 together. The top of the moving rod 7 is rotatably installed with the main linkage rod 5. The main linkage rod 5 is horizontally arranged and is also rotatably connected to the first sliding portion 33. The first sliding portion 33 is arranged in the upper guide rail 31. The top of the moving rod 7 is also slidably connected to the lower guide rail 32 through the secondary linkage rod 6 and the second sliding portion 34. In this way, the side door 2 fixed to the moving rod 7 can change its angle through the moving rod 7, enabling the side door 2 to rotate out of the door frame 4, and the first auxiliary member 9 and the second auxiliary member 10 can limit the angle change to make it close tightly immediately.
[0036] In the embodiments disclosed by the present utility model, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "attachment" can be a direct attachment or an indirect attachment through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments disclosed by the present utility model can be understood according to specific circumstances.
[0037] This specific embodiment is only an interpretation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.
Claims
1. The sliding door structure of a refrigerated truck, comprising a carriage (1) with an opening on one side, a side door (2) arranged at the opening, and a sliding mechanism (3) for slidably mounting the side door (2) on the carriage (1), characterized in that: A door frame (4) is fixedly installed at the opening of the carriage (1). The sliding mechanism (3) includes an upper guide rail (31), a lower guide rail (32), a first sliding part (33), and a second sliding part (34). The upper guide rail (31) is fixedly installed above the door frame (4), and the lower guide rail (32) is fixedly installed below the door frame (4). Both the upper guide rail (31) and the lower guide rail (32) are spaced from the door frame (4). The first sliding part (33) is slidably installed on the upper guide rail (31). One end of a main linkage rod (5) is rotatably installed at the bottom end of the first sliding part (33). A moving rod (7) is vertically arranged at the bottom of the other end of the main linkage rod (5). The moving rod (7) is rotatably connected to the main linkage rod (5). The moving rod (7) is fixedly installed on the front side of the side door (2). One end of a secondary linkage rod (6) is rotatably installed at the bottom of the moving rod (7). The other end of the secondary linkage rod (6) is rotatably installed with the second sliding part (34). The second sliding part (34) is slidably installed on the lower guide rail (32). A rotating device is hinged on the moving rod (7), and a door rod is bolted and fixed on the rotating device. A locking device (11) is fixedly installed at the middle position of the left end of the front side of the side door (2). The locking device (11) is used to cooperate with the door rod to lock the side door (2).
2. The sliding door structure of a refrigerated truck according to claim 1, wherein: An inner frame (8) matching the door frame (4) is fixedly installed on the peripheral edge of the rear side of the side door (2). The inner frame (8) is used to make the side door (2) airtight with the carriage (1). A first auxiliary part (9) and a second auxiliary part (10) are bolted and fixed at the upper end of the side door (2). The first auxiliary part (9) and the second auxiliary part (10) have the same shape. The first auxiliary part (9) and the second auxiliary part (10) are symmetrically arranged with the moving rod (7) as the axis. A through hole is arranged at the middle position of the top of the first auxiliary part (9). One end of a first linkage rod is rotatably installed on the first auxiliary part (9). The other end of the first linkage rod is rotatably connected to the left end of the first sliding part (33).
3. The sliding door structure of a refrigerated truck according to claim 2, characterized in that: The locking device (11) includes a mounting seat (111), a rotating rod (112), and a hook lock (113). The mounting seat (111) is bolted and fixed on the side door (2). A receiving groove is arranged on the front side of the mounting seat (111). A return spring (114) is arranged at the bottom end of the receiving groove. A through hole is arranged on the left side of the hook lock (113). The hook lock (113) is rotatably installed in the receiving groove of the mounting seat (111) through the rotating rod (112).
4. The sliding door structure of a refrigerated truck according to claim 2, characterized in that: A push-pull handle (12) is fixedly installed on the side door (2).
5. The sliding door structure of a refrigerated truck according to claim 1, characterized in that: A guiding and sliding device (13) is spacedly arranged at the lower right end of the right side of the door frame (4). The guiding and sliding device (13) is bolted and fixed to the carriage (1). The guiding and sliding device (13) includes a pulley and a mounting seat (111). The pulley is rotatably installed on the mounting seat (111). The pulley is used to make the side door (2) slide more smoothly left and right.
6. The sliding door structure of a refrigerated truck according to claim 5, characterized in that: A limiting device (14) is screwed on the right end of one side of the opening of the carriage (1).
7. The sliding door structure of a refrigerated truck according to claim 1, characterized in that: A first limit block (15) is bolted to the left end of the upper guide rail (31), and a first limit block (15) is bolted to the right end of the upper guide rail (31).
8. The sliding door structure of a refrigerated truck according to claim 1, characterized in that: A second limit block (16) is bolted to the left end of the lower guide rail (32), and a second limit block (16) is bolted to the right end of the lower guide rail (32).