A multi-layer heat-insulating anti-icing cold chain vehicle locking structure

Abstract

The utility model discloses a multilayer heat -proof anti -icing's cold chain truck locking structure, including two car doors, the junction of two car doors respectively has the connecting block and the mounting bracket of bolt connection, the inside bolt connection of mounting bracket has drive mechanism, the output of drive mechanism swing joint has the lock catch subassembly, to utilize drive mechanism drive lock catch subassembly and connecting block realize locking operation, the inner wall of mounting bracket is connected with heating pipe and is installed the heat preservation shell to utilize heating pipe and heat preservation shell to realize to whole locking structure's double -folding heating operation to avoid whole locking structure icing. The utility model discloses through the cooperation of heating pipe and heat preservation shell, realizes the double -folding heating heat preservation of locking structure, and heating pipe directly heats the inside of mounting bracket, and heat preservation shell reduces the heat loss, and spring heating simultaneously carries out the pertinence heating to lock bar, and multidimensional avoids structure icing, and adapts low temperature transport environment.

Description

Technical Field

[0001] This utility model relates to the field of cold chain vehicle application technology, and in particular to a multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles. Background Technology

[0002] As the core carrier for transporting low-temperature goods, the locking structure of the refrigerated truck's doors is a key component for ensuring the airtightness and safety of the goods during transport. In actual transportation scenarios, refrigerated trucks need to be in a low-temperature environment of -10℃ to -30℃ for extended periods, and even lower temperatures in some extreme regions. This makes the metal parts of the locking structure and moving joints prone to freezing due to condensation of moisture in the air.

[0003] Icing can directly cause the locking mechanism to jam, which not only affects the normal opening and closing of the truck doors, prolongs loading and unloading time, and reduces transportation efficiency; more seriously, if icing prevents the locking structure from closing completely, it will damage the airtightness of the truck, causing cold air leakage, raising the temperature inside the truck, and leading to the spoilage and damage of fresh produce, medicines, and other goods, resulting in huge economic losses for users. The reliability of existing locking structures is difficult to meet the needs of low-temperature transportation. Therefore, this utility model proposes a multi-layer heat-insulating and anti-icing locking structure for cold chain trucks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles, so as to solve the problem of low-temperature icing causing the locking structure to fail as mentioned in the background art, and to achieve stable operation and efficient anti-icing effect of the locking structure.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: providing a multi-layer heat-insulating and anti-icing cold chain vehicle locking structure, including two compartment doors, wherein a connecting block and a mounting bracket are bolted to the joint of the two compartment doors respectively; The mounting bracket is bolted to a drive mechanism, and the output end of the drive mechanism is movably connected to a locking assembly, so that the drive mechanism can drive the locking assembly and the connecting block to achieve a locking operation. The inner wall of the mounting bracket is fitted with a heating tube, and the outside of the mounting bracket is fitted with an insulation shell, so as to achieve dual heating operation of the entire locking structure by using the heating tube and the insulation shell, so as to prevent the entire locking structure from freezing.

[0006] The present invention is further configured such that: the driving mechanism includes a fixed frame fixed on the mounting bracket, a cylinder is bolted inside the fixed frame, a connecting rod is fixedly connected to the end face of each of the two driving rods of the cylinder, a pressing block is fixedly connected to the end face of each of the two connecting rods, a transmission plate is fitted to the top of the pressing block, a locking assembly is pressed on one side of the transmission plate, a support rod is fixedly connected to the other side, a slider is fixedly connected to one end of the support rod, the slider is slidably connected to the fixed frame, the fixed frame has a groove adapted to the slider, and a tension spring is fixedly connected to the bottom of the groove, with one end of the tension spring connected to the slider.

[0007] With the above technical solution, the cylinder acts as a power source. When its drive rod extends or retracts, it drives the connecting rod to slide along the groove of the fixed frame, thereby pushing the extrusion block to move. The inclined surface at the top of the extrusion block fits against the bottom of the transmission plate. During the movement, the inclined surface transmits vertical force, pushing the transmission plate to drive the support rod and slider to slide along the groove of the fixed frame, while stretching the tension spring. The inclined surface at the top of the transmission plate cooperates with the pressing surface of the push plate of the locking assembly, converting the vertical motion into a horizontal thrust, driving the locking assembly to achieve the locking action. When unlocking, the cylinder drive rod returns to its original position, and the rebound force of the tension spring drives the slider, support rod, and transmission plate to move in the opposite direction, causing the locking assembly to disengage from the locked state and complete the unlocking.

[0008] The present invention is further configured such that: the two ends of the fixing frame are symmetrically provided with sliding grooves, and the two connecting rods are respectively slidably connected to the sliding grooves.

[0009] Through the above technical solution, the slide provides a stable sliding guide for the connecting rod, restricts the movement trajectory of the connecting rod, avoids deviation or jamming during movement, ensures that the power of the cylinder can be accurately transmitted to the extrusion block, and guarantees the stability and reliability of the drive mechanism.

[0010] The present invention is further configured such that the tops of both extrusion blocks are inclined, and they slide against the bottom of the transmission plate through the inclined surfaces.

[0011] Through the above technical solution, the inclined design of the extrusion block realizes the conversion of power direction, transforming the horizontal motion driven by the cylinder into the vertical motion of the transmission plate. Moreover, the sliding method of the inclined surface reduces contact friction, making power transmission smoother, reducing wear during the operation of the mechanism, and improving driving efficiency.

[0012] The present invention is further configured such that: the locking assembly includes a push plate, and a plurality of locking rods are uniformly fixedly connected to one side of the push plate. The plurality of locking rods all pass through one side of the mounting bracket, and the end face of the locking rod is engaged with a latching groove on one side of the connecting block. A heating spring is wrapped around the outside of the plurality of locking rods.

[0013] Through the above technical solution, after the push plate receives the thrust of the transmission plate, it drives multiple locking rods to extend synchronously and engage with the latching groove of the connecting block, thereby realizing multi-point locking of the carriage door and improving the locking sealing performance. The heating spring is wrapped around the outside of the locking rod, which can not only provide heating protection for the locking rod and prevent ice from forming at the engagement point between the locking rod and the connecting block, but also assist the push plate in resetting during unlocking, thereby enhancing the reset reliability of the latching assembly.

[0014] The present invention is further configured such that: the bottom of the push plate is provided with an inclined extrusion surface, and the extrusion surface is in contact with the top inclined surface of the transmission plate.

[0015] Through the above technical solution, the fitting design of the extrusion surface and the top inclined surface of the transmission plate realizes the secondary power conversion from vertical motion to horizontal motion, ensuring that the vertical displacement of the transmission plate can be efficiently converted into the horizontal displacement of the push plate, making the extension and retraction of the locking rod precise and powerful, and ensuring the smoothness of locking and unlocking.

[0016] The present invention is further configured such that the end faces of the plurality of heating springs respectively abut against the side walls of the push plate and the mounting bracket.

[0017] Through the above technical solution, the clamping design at both ends of the heating spring puts it in a pre-tightened state. On the one hand, it can provide a stable reset force for the push plate, and on the other hand, it ensures that the heating spring is in close contact with the push plate and the mounting bracket, improves the heat transfer efficiency, and makes the locking rod and surrounding structure evenly heated, further enhancing the anti-icing effect.

[0018] The beneficial effects of this utility model are as follows: 1. The multi-layer heat-insulating and anti-icing cold chain vehicle locking structure proposed in this utility model achieves dual heating and heat preservation of the locking structure through the cooperation of heating pipe and insulation shell. The heating pipe directly heats the inside of the mounting frame, the insulation shell reduces heat loss, and the heating spring provides targeted heating to the locking rod, thus preventing the structure from icing in multiple dimensions and making it suitable for low-temperature transportation environments. 2. The multi-layer heat-insulating and anti-icing cold chain truck locking structure proposed in this utility model utilizes a drive mechanism driven by a cylinder, combined with an inclined plane transmission structure to achieve two conversions of power direction. The transmission process is smooth and the power transmission is efficient. The multi-point locking rod design improves the locking and sealing performance. The overall structure is stable in operation and convenient to use, effectively improving the reliability of cold chain truck transportation and the safety of goods. Attached Figure Description

[0019] Figure 1 This is an installation structure diagram of a multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to this utility model; Figure 2 This is the first internal structural diagram of a multi-layer heat-insulating and anti-icing locking structure for a cold chain vehicle according to the present invention. Figure 3This is a second internal structural diagram of a multi-layer heat-insulating and anti-icing locking structure for a cold chain vehicle according to the present invention. Figure 4 This is the third internal structural diagram of a multi-layer heat-insulating and anti-icing locking structure for a cold chain vehicle according to the present invention. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Carriage door; 2. Connecting block; 3. Mounting bracket; 4. Drive mechanism; 41. Fixing bracket; 411. Slide groove; 42. Cylinder; 43. Connecting rod; 44. Extrusion block; 45. Transmission plate; 46. Support rod; 47. Slider; 48. Tension spring; 5. Locking assembly; 51. Push plate; 511. Extrusion surface; 52. Locking rod; 53. Heating spring; 6. Heating tube; 7. Insulation shell. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0022] like Figures 1-5As shown, a multi-layer heat-insulating and anti-icing locking structure for a cold chain vehicle includes two cargo doors 1. A connecting block 2 and a mounting bracket 3 are bolted to the junction of the two cargo doors 1. A drive mechanism 4 is bolted inside the mounting bracket 3. A locking assembly 5 is movably connected to the output end of the drive mechanism 4, so that the drive mechanism 4 drives the locking assembly 5 to lock the connecting block 2. The drive mechanism 4 includes a fixed bracket 41 fixed to the mounting bracket 3. Sliding grooves 411 are symmetrically formed at both ends of the fixed bracket 41, and two connecting rods 43 are slidably connected to the sliding grooves 411. The sliding grooves 411 provide stable sliding guidance for the connecting rods 43, limiting their movement. To prevent deviation or jamming during movement and ensure precise transmission of power from cylinder 42 to extrusion block 44, thus guaranteeing the stability and reliability of the drive mechanism 4, the cylinder 42 is bolted internally to the fixed frame 41. Connecting rods 43 are fixedly connected to the end faces of both drive rods of cylinder 42, and extrusion blocks 44 are fixedly connected to the end faces of both connecting rods 43. The tops of both extrusion blocks 44 are sloped and slide against the bottom of the transmission plate 45. The sloped design of the extrusion blocks 44 enables the conversion of power direction, transforming the horizontal movement driven by cylinder 42 into the vertical movement of the transmission plate 45. Furthermore, the sliding motion of the sloped surfaces reduces... The reduced contact friction makes power transmission smoother, reduces wear during operation, and improves drive efficiency. A transmission plate 45 is fitted to the top of the extrusion block 44. A locking assembly 5 is extruded onto one side of the transmission plate 45, and a support rod 46 is fixedly connected to the other side. A slider 47 is fixedly connected to one end of the support rod 46. The slider 47 is slidably connected to the fixed frame 41. The fixed frame 41 has a groove at the slider 47 that matches it, and a tension spring 48 is fixedly connected to the bottom of the groove, with one end of the tension spring 48 connected to the slider 47. The cylinder 42 serves as the power source; when its drive rod extends or retracts, it drives the connecting rod 43 along the groove 4 of the fixed frame 41. 11. Sliding, thereby pushing the pressing block 44 to move; the inclined surface at the top of the pressing block 44 fits against the bottom of the transmission plate 45. During the movement, the vertical force is generated through the inclined surface, pushing the transmission plate 45 to drive the support rod 46 and the slider 47 to slide along the groove of the fixed frame 41, while stretching the tension spring 48; the inclined surface at the top of the transmission plate 45 cooperates with the pressing surface 511 of the push plate 51 of the locking assembly 5, converting the vertical movement into a horizontal thrust, driving the locking assembly 5 to achieve the locking action; when unlocking, the cylinder 42 drives the rod to reset, and the rebound force of the tension spring 48 drives the slider 47, the support rod 46 and the transmission plate 45 to move in the opposite direction, so that the locking assembly 5 is released from the locked state, completing the unlocking.

[0023] like Figure 2 and Figure 3As shown, the locking assembly 5 includes a push plate 51. The bottom of the push plate 51 has an inclined pressing surface 511, which is attached to the top inclined surface of the transmission plate 45. This contact design between the pressing surface 511 and the top inclined surface of the transmission plate 45 enables a secondary power conversion from vertical to horizontal motion, ensuring that the vertical displacement of the transmission plate 45 can be efficiently converted into the horizontal displacement of the push plate 51. This makes the extension and retraction of the locking rod 52 precise and powerful, ensuring smooth locking and unlocking. Multiple locking rods 52 are evenly fixedly connected to one side of the push plate 51. All locking rods 52 penetrate one side of the mounting bracket 3, and their end faces are engaged with the latching grooves on one side of the connecting block 2. Heating springs 53 are wrapped around the outside of each locking rod 52, and the end faces of the multiple heating springs 53 are respectively... The heating spring 53 is pressed against the side wall of the push plate 51 and the mounting bracket 3. The pressing design at both ends of the heating spring 53 puts it in a pre-tight state. On the one hand, it can provide a stable reset force for the push plate 51. On the other hand, it can ensure that the heating spring 53 is in close contact with the push plate 51 and the mounting bracket 3, improve the heat transfer efficiency, and make the locking rod 52 and the surrounding structure evenly heated, further enhancing the anti-icing effect. After the push plate 51 receives the thrust of the transmission plate 45, it drives multiple locking rods 52 to extend synchronously and lock into the buckle groove of the connecting block 2, realizing multi-point locking of the carriage door 1 and improving the locking sealing performance. The heating spring 53 is wrapped around the outside of the locking rod 52, which can not only provide heating protection for the locking rod 52 and prevent ice from forming at the locking point between the locking rod 52 and the connecting block 2, but also assist the push plate 51 to reset when unlocking, enhancing the reset reliability of the locking assembly 5.

[0024] like Figure 1 and Figure 3 As shown, a heating tube 6 is snapped onto the inner wall of the mounting bracket 3, and an insulation shell 7 is installed on the outside of the mounting bracket 3, so as to achieve dual heating operation of the entire locking structure by using the heating tube 6 and the insulation shell 7, so as to prevent the entire locking structure from freezing.

[0025] In use, the connecting block 2 and the mounting bracket 3 are first fixed to the joint of the two carriage doors 1 with bolts, ensuring that their positions are aligned. During the locking operation, the cylinder 42 is activated, and its drive rod extends to drive the connecting rod 43 to slide along the slide groove 411 of the fixing bracket 41, thereby pushing the pressing block 44 with an inclined top to move. The pressing block 44 transmits vertical force through its inclined surface and its contact with the bottom of the transmission plate 45, causing the transmission plate 45 to drive the support rod 46 and the slider 47 to slide along the groove of the fixing bracket 41 and stretch the tension spring 48. At the same time, the inclined surface of the transmission plate 45 cooperates with the pressing surface 511 of the push plate 51, converting the vertical movement into horizontal movement. The pusher plate 51 is pushed by the force, causing multiple locking rods 52 to extend synchronously and engage with the latching groove of the connecting block 2, thus locking the carriage door. During this process, the heating pipe 6 on the inner wall of the mounting bracket 3 continuously heats the internal structure, the external insulation shell 7 reduces heat loss, and the heating spring 53 on the outside of the locking rod 52 heats up synchronously, providing targeted heating for the locking rod 52 and the engagement point, preventing icing from multiple dimensions. During the unlocking operation, the cylinder 42 drives the rod to reset, and the rebound force of the tension spring 48 drives the slider 47, support rod 46 and transmission plate 45 to move in the opposite direction. The heating spring 53 assists the pusher plate 51 to reset, causing the locking rod 52 to disengage from the latching groove of the connecting block 2, thus unlocking the carriage door.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles, comprising two compartment doors (1), characterized in that: The two carriage doors (1) are respectively bolted to the joint of a connecting block (2) and a mounting bracket (3); The mounting bracket (3) is bolted to a drive mechanism (4), and the output end of the drive mechanism (4) is movably connected to a locking assembly (5) so that the drive mechanism (4) drives the locking assembly (5) and the connecting block (2) to achieve a locking operation. The inner wall of the mounting bracket (3) is fitted with a heating tube (6), and the outside of the mounting bracket (3) is fitted with an insulation shell (7) so as to achieve dual heating operation of the entire locking structure by using the heating tube (6) and the insulation shell (7) to avoid the entire locking structure from freezing.

2. The multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to claim 1, characterized in that: The drive mechanism (4) includes a fixed frame (41) fixed on the mounting frame (3). A cylinder (42) is bolted inside the fixed frame (41). A connecting rod (43) is fixedly connected to the end face of the two drive rods of the cylinder (42). A pressing block (44) is fixedly connected to the end face of the two connecting rods (43). A transmission plate (45) is attached to the top of the pressing block (44). A locking assembly (5) is pressed on one side of the transmission plate (45), and a support rod (46) is fixedly connected to the other side. A slider (47) is fixedly connected to one end of the support rod (46). The slider (47) is slidably connected to the fixed frame (41). The fixed frame (41) has a groove adapted to the slider (47) at the location of the slider (47), and a tension spring (48) is fixedly connected to the bottom of the groove. One end of the tension spring (48) is connected to the slider (47).

3. The multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to claim 2, characterized in that: The fixed frame (41) has symmetrical grooves (411) at both ends, and the two connecting rods (43) are slidably connected to the grooves (411).

4. The multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to claim 2, characterized in that: The tops of both extrusion blocks (44) are sloped and slide against the bottom of the transmission plate (45) via the slope.

5. The multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to claim 2, characterized in that: The locking assembly (5) includes a push plate (51), on one side of which a plurality of locking rods (52) are evenly fixedly connected. The plurality of locking rods (52) all pass through one side of the mounting bracket (3), and the end face of the locking rod (52) is engaged with the latch groove on one side of the connecting block (2). The exterior of the plurality of locking rods (52) is wrapped with a heating spring (53).

6. The multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to claim 5, characterized in that: The bottom of the push plate (51) is provided with an inclined extrusion surface (511), and the extrusion surface (511) is attached to the top inclined surface of the transmission plate (45).

7. The multi-layer heat-insulating and anti-icing locking structure for cold chain vehicles according to claim 5, characterized in that: The end faces of the plurality of heating springs (53) abut against the side walls of the push plate (51) and the mounting bracket (3), respectively.

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