Electric control device and refrigerating unit of refrigerator car

Abstract

The utility model relates to the technical field of refrigerating units for refrigerator cars, in particular to an electric control device and a refrigerator car refrigerating unit, which comprises an electric control box, heat dissipation openings are arranged on two sides of the electric control box, a limit frame is mounted on one side of each heat dissipation opening, a dustproof net plate is slidably inserted in the limit frame, a connecting block is arranged at the bottom of the dustproof net plate, and a limit hole is arranged on the connecting block. A limiting rod is arranged on one side of the limiting hole, one end of the limiting rod is fixedly connected with a bevel transmission rod, one end of the bevel transmission rod is slidably connected with a bevel driving rod, the other end of the bevel transmission rod is slidably connected with a bevel driven rod, and the bevel driven rod is sleeved with a reset spring. The inclined face driving rod is indirectly driven to move downwards or downwards by screwing the bolt in the forward direction or the reverse direction, the limiting rod is driven to be slidably inserted into or pulled out of the limiting hole formed in the connecting block under sliding extrusion fit among the inclined face driving rod, the inclined face transmission rod and the inclined face driven rod, rapid disassembly and assembly of the dustproof net plate are completed, operation steps are simplified, and the working efficiency is improved. And later cleaning is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration units for refrigerated vehicles, and particularly relates to an electric control device and a refrigeration unit for a refrigerated vehicle. Background Technique

[0002] The refrigeration unit is the core equipment of refrigerated transport vehicles. It widely adopts the steam compression refrigeration technology, and uses the heat absorption and heat release during the phase change of the refrigerant to keep the temperature inside the carriage at a suitable storage temperature all the time. The refrigeration units for refrigerated transport are divided into independent type and direct-connected type. The independent refrigeration unit needs to be equipped with a dedicated fuel engine and an electric motor, and the dedicated engine and external power supply are used respectively during driving and parking, and the open refrigeration compressor is driven through a belt drive mechanism; the direct-connected (non-independent) refrigeration unit uses the power of the vehicle engine, and the refrigeration unit only works when the vehicle engine is running. The electric control device of the refrigeration unit for a refrigerated vehicle is mainly used to control and monitor the operation state of the refrigeration system to ensure that the temperature inside the carriage can be kept within the set range.

[0003] In the prior art, the controller, relay and other electronic components in the electric control device will generate a certain amount of heat during operation. If these heats cannot be effectively dissipated, it may lead to too high temperature, which in turn affects the normal operation of the equipment and even damages the electronic components. Therefore, it is generally necessary to open heat dissipation holes on the electric control box housing, and then install a dust-proof net plate on one side of the heat dissipation holes through multiple groups of bolts or screws.

[0004] However, when the dust-proof net plate fixedly installed on the electric control box is in use, it needs to be cleaned or replaced regularly. Before cleaning or replacing, it is necessary to use tools such as screwdrivers to screw down multiple groups of bolts or screws one by one, resulting in cumbersome operation, increasing the workload of maintenance personnel, and thus leading to low efficiency. Furthermore, there is a problem that the dust-proof net plate is inconvenient to install and disassemble during cleaning or replacement. Content of the Utility Model

[0005] The purpose of the utility model is to provide an electric control device and a refrigeration unit for a refrigerated vehicle to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An electric control device and a refrigeration unit for a refrigerated vehicle, including: an electric control box, heat dissipation openings are opened on both sides of the electric control box, a limiting frame is installed on one side of the heat dissipation opening, and a dust-proof net plate is slidably inserted in the limiting frame.

[0007] A connecting block is fixedly connected to the bottom of the dust-proof net plate, a limiting hole is opened on the connecting block, a limiting rod is arranged on one side of the limiting hole, one end of the limiting rod is fixedly connected to an inclined surface transmission rod, one end of the inclined surface transmission rod is slidably connected to an inclined surface driving rod, the other end of the inclined surface transmission rod is slidably connected to an inclined surface driven rod, and a return spring is sleeved on the inclined surface driven rod.

[0008] Preferably, one side of the limit frame is fixedly connected to the electric control box. A jack is provided on the other side of the limit frame. A support column is slidably inserted into the jack. The upper surface of the support column is fixedly connected to the impurity collection box. An installation hole is provided on the upper surface of the limit frame.

[0009] Preferably, a sliding connection is provided between the installation hole and the dust-proof net plate. Slots are provided around the installation hole. A cover plate is fixedly connected to the upper surface of the dust-proof net plate. A sealing strip is fixedly connected to the lower surface of the cover plate. The sealing strip is slidably inserted into the slot. The inclined plane transmission rod is slidably sleeved on the bottom of the limit frame.

[0010] Preferably, the top of the inclined plane driving rod is fixedly connected to one side of the round block. A limit bearing is fixedly sleeved on the other side of the round block. One end of a smooth rod is fixedly sleeved in the inner ring of the limit bearing. The other end of the smooth rod is fixedly connected to a bolt. The bolt is sleeved in a threaded sleeve. The bottom of the threaded sleeve is fixedly connected to one end of a limit sleeve. The outer surface of the inclined plane transmission rod is slidably connected to the lower surface of the dust-proof net plate.

[0011] Preferably, the other end of the limit sleeve is fixedly sleeved in a connecting sleeve. One end of the connecting sleeve is fixedly connected to the limit frame. The inclined plane driven rod is slidably sleeved in a support sleeve. The bottom of the support sleeve is fixedly connected to the connecting sleeve. A return spring is fixedly connected between the support sleeve and the inclined plane driven rod. Both ends of the inclined plane transmission rod are slidably sleeved in the connecting sleeve.

[0012] A refrigerated truck refrigeration unit includes the above-mentioned electric control device.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The limit frame facilitates the sliding insertion of the dust-proof net plate, thereby initially positioning the dust-proof net plate. Then, by screwing the bolt, the inclined plane driving rod is indirectly driven to move downward. Under the sliding extrusion cooperation among the inclined plane driving rod, the inclined plane transmission rod, and the inclined plane driven rod, the inclined plane driven rod is pushed upward, and at the same time, the return spring is compressed. While the inclined plane transmission rod moves horizontally, it drives the limit rod to be slidably inserted into the limit hole opened in the connection block, thereby limiting the connection block, and further limiting and fixing the dust-proof net plate through the connection block, completing the rapid installation of the dust-proof net plate and improving the installation efficiency.

[0015] 2. When it is necessary to disassemble the dust-proof net plate, only need to reverse the two bolts on both sides of the limit frame. At the same time, under the reverse elastic force of the return spring, the inclined plane driven rod moves downward, pushing the inclined plane transmission rod to move horizontally. The inclined plane transmission rod then pushes the inclined plane driving rod to move upward along with the bolt, so that the limit rod slides out of the limit hole, and then the dust-proof net plate can be quickly taken out, thereby improving the installation and disassembly efficiency of the dust-proof net plate, simplifying the operation steps, reducing the labor intensity of the operator, and facilitating the subsequent cleaning. Description of the Drawings

[0016] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 This is a schematic bottom view of the internal structure of the present utility model;

[0018] Figure 3 This is a schematic side view of the internal structure of the present utility model;

[0019] Figure 4 This is a schematic top view of the internal structure of the present utility model.

[0020] In the figure: 1, electric control box; 2, heat dissipation port; 3, limit frame; 4, dust-proof net plate; 5, connection block; 6, limit hole; 7, limit rod; 8, inclined plane transmission rod; 9, inclined plane driving rod; 10, inclined plane driven rod;

[0021] 11, return spring; 12, jack; 13, support pillar; 14, impurity collection box; 15, mounting hole; 16, slot;

[0022] 17, cover plate; 18, sealing strip; 19, round block; 20, limit bearing; 21, smooth rod; 22, bolt;

[0023] 23, threaded sleeve; 24, limit sleeve; 25, connection sleeve; 26, support sleeve. Specific embodiments

[0024] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some embodiments of the present utility model, rather than all embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0025] Embodiment 1: Please refer to Figures 1 - 4 , the present utility model provides a technical solution: An electric control device and a refrigeration unit for a refrigerated truck, including: an electric control box 1, heat dissipation ports 2 are opened on both sides of the electric control box 1, a limit frame 3 is installed on one side of the heat dissipation port 2, a dust-proof net plate 4 is slidably inserted in the limit frame 3, a connection block 5 is fixedly connected to the bottom of the dust-proof net plate 4, a limit hole 6 is opened on the connection block 5, a limit rod 7 is arranged on one side of the limit hole 6, one end of the limit rod 7 is fixedly connected to an inclined plane transmission rod 8, one end of the inclined plane transmission rod 8 is slidably connected to an inclined plane driving rod 9, the other end of the inclined plane transmission rod 8 is slidably connected to an inclined plane driven rod 10, and a return spring 11 is sleeved on the inclined plane driven rod 10.

[0026] By providing heat dissipation openings 2 on both sides of the electric control box 1, it is convenient for the internal heat dissipation of the electric control box 1. A dust-proof net plate 4 is installed on one side of the heat dissipation opening 2, so that external miscellaneous dust can be prevented from entering during the heat dissipation process of the electric control box 1. On the one hand, it protects the internal components of the electric control box 1, and on the other hand, it helps to extend the service life of the electric control device. The limit frame 3 facilitates the sliding insertion of the dust-proof net plate 4, thereby initially positioning the dust-proof net plate 4. Then, by turning the bolt 22, the inclined surface drive rod 9 is indirectly driven to move downward. The inclined surface drive rod 9 slides on the inclined surface at one end of the inclined surface transmission rod 8 through the inclined surface at its bottom, thereby driving the inclined surface transmission rod 8 to move. As a result, the inclined surface at the other end of the inclined surface transmission rod 8 slides with the inclined surface at the bottom of the inclined surface driven rod 10, thereby pushing the inclined surface driven rod 10 upward and compressing the return spring 11 at the same time. While the inclined surface transmission rod 8 moves horizontally, it drives the limit rod 7 to slide and insert into the limit hole 6 opened in the connection block 5, thereby limiting the connection block 5, and further limiting and fixing the dust-proof net plate 4 through the connection block 5, completing the installation of the dust-proof net plate 4. When it is necessary to disassemble the dust-proof net plate 4, only need to reverse the two bolts 22 on both sides of the limit frame 3. At the same time, under the reverse elastic force of the return spring 11, the inclined surface driven rod 10 moves downward, driving the inclined surface transmission rod 8 to move horizontally. The inclined surface transmission rod 8 then pushes the inclined surface drive rod 9 to move upward with the bolt 22, so that the limit rod 7 can slide out of the limit hole 6, and then the dust-proof net plate 4 can be quickly taken out.

[0027] Embodiment 2: On the basis of Embodiment 1, one side of the limit frame 3 is fixedly connected to the electric control box 1, and a jack 12 is opened on the other side of the limit frame 3. A support column 13 is slidably inserted into the jack 12, and the upper surface of the support column 13 is fixedly connected to the impurity collection box 14. An installation hole 15 is opened on the upper surface of the limit frame 3. The limit frame 3 is symmetrically arranged with respect to the electric control box 1 and fixedly connected to the electric control box 1. A jack 12 is opened at the outer bottom of the limit frame 3, and the jack 12 limits the support column 13, so as to facilitate the stable support of the impurity collection box 14 by the support column 13. The impurity collection box 14 is convenient for collecting the sundries falling from the dust-proof net plate 4. The installation hole 15 is slidably connected to the dust-proof net plate 4, and a slot 16 is opened around the installation hole 15. A cover plate 17 is fixedly connected to the upper surface of the dust-proof net plate 4, and a sealing strip 18 is fixedly connected to the lower surface of the cover plate 17. The sealing strip 18 is slidably inserted into the slot 16. The inclined surface transmission rod 8 is slidably sleeved at the bottom of the limit frame 3. The limit frame 3 facilitates the sliding insertion and limitation of the dust-proof net plate 4 through the installation hole 15 opened at its top. A slot 16 is opened around the installation hole 15, and the slot 16 facilitates the insertion of the sealing strip 18.

[0028] When installing the dust-proof net plate 4, through the installation holes 15 opened at the top of the limit frame 3, the dust-proof net plate 4 is slid into the limit frame 3, and is initially limited and fixed by the limit frame 3. After the dust-proof net plate 4 is completely inserted, the sealing strip 18 fixedly installed on the top cover plate 17 thereof also slides into the slot 16 opened at the top of the limit frame 3, thereby increasing the tightness of the connection between the dust-proof net plate 4 and the limit frame 3 and improving the sealing effect. The jack 12 opened at the outer bottom of the limit frame 3 facilitates the insertion of the support column 13. By inserting the support column 13 into the jack 12, the support column 13 supports the debris collection box 14. The setting of the debris collection box 14 can facilitate the collection of the debris falling on the dust-proof net plate 4, and further facilitate the subsequent cleaning work.

[0029] Embodiment 3: On the basis of Embodiment 2, the top of the inclined surface drive rod 9 is fixedly connected to one side of the round block 19. The other side of the round block 19 is fixedly sleeved with a limit bearing 20. One end of a smooth rod 21 is fixedly sleeved in the inner ring of the limit bearing 20. The other end of the smooth rod 21 is fixedly connected to a bolt 22. The bolt 22 is sleeved in a threaded sleeve 23. The bottom of the threaded sleeve 23 is fixedly connected to one end of a limit sleeve 24. The outer circumferential surface of the inclined surface transmission rod 8 is slidably connected to the lower surface of the dust-proof net plate 4. The bottom end of the inclined surface drive rod 9 is slidably connected to the inclined surface transmission rod 8. The top of the inclined surface drive rod 9 is fixedly connected to the lower surface of the round block 19. The upper surface of the round block 19 is fixedly installed with a limit bearing 20 in an embedded manner. The limit bearing 20 adopts an installation method with an inner ring rotating and an outer ring fixed. The smooth rod 21 is fixedly connected between the limit bearing 20 and the bolt 22. The bolt 22 is threadedly connected to the threaded sleeve 23. The upper end of the limit sleeve 24 is fixedly connected to the threaded sleeve 23. The lower end of the limit sleeve 24 is fixedly sleeved in a connection sleeve 25, and the butt joint of the limit sleeve 24 and the connection sleeve 25 penetrates each other. The other end of the limit sleeve 24 is fixedly sleeved in the connection sleeve 25. One end of the connection sleeve 25 is fixedly connected to the limit frame 3. The inclined surface driven rod 10 is slidably sleeved in a support sleeve 26. The bottom of the support sleeve 26 is fixedly connected to the connection sleeve 25. A return spring 11 is fixedly connected between the support sleeve 26 and the inclined surface driven rod 10. Both ends of the inclined surface transmission rod 8 are slidably sleeved in the connection sleeve 25. There are four connection sleeves 25, and all of them are fixedly connected to the side wall of the limit frame 3. The inclined surface driven rod 10 is limited by the support sleeve 26. The support sleeve 26 is supported by the connection sleeve 25 and the butt joint of the support sleeve 26 and the connection sleeve 25 penetrates each other. Both ends of the inclined surface transmission rod 8 are limited by the connection sleeve 25.

[0030] After initially installing and limiting the dust-proof net plate 4, by twisting the bolt 22 at this time, the bolt 22 is threadedly connected to the threaded sleeve 23, so that the bolt 22 moves towards the top of the threaded sleeve 23. The bolt 22 drives the optical rod 21 to rotate. One end of the optical rod 21 rotates within the inner ring of the limit bearing 20, thereby pressing the round block 19 to move. The round block 19 slides downward under the limitation of the limit sleeve 24, so that the round block 19 drives the inclined plane drive rod 9 fixedly connected to its bottom to move downward. The inclined plane drive rod 9 slides between the inclined plane opened at its bottom and the inclined plane opened at one end of the inclined plane transmission rod 8. Through the sliding action of inclined plane extrusion, the inclined plane transmission rod 8 is pushed horizontally. The inclined plane transmission rod 8 drives the limit rod 7 fixedly connected thereto to move horizontally until it slides and inserts into the limit hole 6 opened on the connecting block 5 fixedly connected to the bottom of the dust-proof net plate 4. Thus, by limiting the connecting block 5, the dust-proof net plate 4 is further limited. At the same time, the inclined plane at the other end of the inclined plane transmission rod 8 is slidably connected to the inclined plane at the bottom of the inclined plane driven rod 10, thereby pushing the inclined plane driven rod 10 to move. The inclined plane driven rod 10 slides upward under the limitation of the support sleeve 26, so as to compress the return spring 11. Since the connecting block 5 and the limit rod 7 are arranged symmetrically in the reverse direction, the dust-proof net plate 4 is indirectly limited again by screwing the bolt 22 on the other side of the limit frame 3, thereby completing the fixed limitation of the dust-proof net plate 4. When it is necessary to disassemble the dust-proof net plate 4, reverse the two bolts 22 on both sides of the limit frame 3. At the same time, under the reverse elastic force of the return spring 11, the inclined plane driven rod 10 moves downward, pushing the inclined plane transmission rod 8 to move horizontally. The inclined plane transmission rod 8 then pushes the inclined plane drive rod 9 to move upward along with the bolt 22, so that the limit rod 7 can slide out of the limit hole 6, and then the dust-proof net plate 4 can be quickly taken out, thereby improving the installation and disassembly efficiency of the dust-proof net plate 4, simplifying the operation steps, reducing the labor intensity of the operator, and facilitating the subsequent cleaning.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric control device, comprising an electric control box (1), characterized in that: The two sides of the electric control box (1) are provided with heat dissipation openings (2), and a limiting frame (3) is installed on one side of the heat dissipation opening (2), and a dust-proof net plate (4) is slidably inserted in the limiting frame (3); A connecting block (5) is fixedly connected to the bottom of the dust-proof net plate (4), a limiting hole (6) is formed in the connecting block (5), a limiting rod (7) is arranged on one side of the limiting hole (6), one end of the limiting rod (7) is fixedly connected to an inclined surface transmission rod (8), one end of the inclined surface transmission rod (8) is slidably connected to an inclined surface driving rod (9), the other end of the inclined surface transmission rod (8) is slidably connected to an inclined surface driven rod (10), and a return spring (11) is sleeved on the inclined surface driven rod (10).

2. The electronic control device according to claim 1, characterized in that: One side of the limiting frame (3) is fixedly connected to the electric control box (1), a jack (12) is formed in the other side of the limiting frame (3), a support column (13) is slidably inserted in the jack (12), the upper surface of the support column (13) is fixedly connected to a dust collection box (14), and a mounting hole (15) is formed in the upper surface of the limiting frame (3).

3. An electronic control device according to claim 2, characterized in that: A sliding connection is provided between the mounting hole (15) and the dust-proof net plate (4), a slot (16) is formed around the mounting hole (15), a cover plate (17) is fixedly connected to the upper surface of the dust-proof net plate (4), a sealing strip (18) is fixedly connected to the lower surface of the cover plate (17), the sealing strip (18) is slidably inserted in the slot (16), and the inclined surface transmission rod (8) is slidably sleeved on the bottom of the limiting frame (3).

4. An electronic control device according to claim 3, characterized in that: The top of the inclined surface driving rod (9) is fixedly connected to one side of a round block (19), a limiting bearing (20) is fixedly sleeved on the other side of the round block (19), one end of a smooth rod (21) is fixedly sleeved in the inner ring of the limiting bearing (20), the other end of the smooth rod (21) is fixedly connected to a bolt (22), the bolt (22) is sleeved in a threaded sleeve (23), the bottom of the threaded sleeve (23) is fixedly connected to one end of a limiting sleeve (24), and the outer surface of the inclined surface transmission rod (8) is slidably connected to the lower surface of the dust-proof net plate (4).

5. An electronic control device according to claim 4, characterized in that: The other end of the limiting sleeve (24) is fixedly sleeved in a connecting sleeve (25), one end of the connecting sleeve (25) is fixedly connected to the limiting frame (3), the inclined surface driven rod (10) is slidably sleeved in a support sleeve (26), the bottom of the support sleeve (26) is fixedly connected to the connecting sleeve (25), the return spring (11) is fixedly connected between the support sleeve (26) and the inclined surface driven rod (10), and both ends of the inclined surface transmission rod (8) are slidably sleeved in the connecting sleeve (25).

6. A refrigeration unit for a refrigerated truck, characterized in that: An electric control device according to any one of the above claims 1-5 is included.

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