Bearing device of control cabinet for industrial automatic control system

Abstract

The utility model discloses a bearing device of a control cabinet for an industrial automatic control system, which comprises a radiating device of an electrical cabinet for the industrial automatic control system, the radiating device comprises a cabinet body, the front end of the cabinet body is provided with a protective door, the lower end of the cabinet body is provided with an air inlet fan, and the top end of the cabinet body is provided with an exhaust fan; four supporting rods of the same structure are arranged at the four corners of an inner cavity of the cabinet body respectively, and a plurality of bearing plates are arranged in the four supporting rods. According to the utility model, a detachable connecting structure is designed between the bearing plate and the supporting rod, so that a worker can easily dismount and mount the bearing plate without a complicated operation process, thereby greatly improving the convenience of overhauling and maintaining electrical elements; the design of the supporting rods not only forms a stable rectangular frame body structure and enhances the bearing capacity in the cabinet body, but also provides additional stability and supporting force through the design of the first bent edge and the second bent edge, and ensures the safety and stability of the bearing plate and the electrical elements on the bearing plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to control cabinet technical field, especially industrial automatic control system uses control cabinet's bearing device. BACKGROUND

[0002] Control cabinet, as the indispensable cornerstone of industrial automatic control system, its structure usually involves the switch device, the measuring instrument, the protection electric appliance and the auxiliary equipment according to the electrical wiring specification, carefully assemble in the closed or semi-closed metal cabinet body or screen width structure. This layout aims to ensure the high efficiency and safety of power system under normal operating conditions, while avoiding potential threats to operating personnel and surrounding equipment. In normal operating conditions, control cabinet can easily realize the connection and disconnection of circuit through manual or automatic switch. In the case of failure or abnormality, it can rely on protection electric appliance to quickly cut off the circuit or trigger the alarm mechanism.

[0003] However, the current market widely circulated industrial product parameterization automatic design control cabinet has shortcomings in the design and installation of the bearing plate. Specifically, these control cabinets often bring inconvenience to the disassembly and reinstallation work of the staff, thereby affecting the possibility of efficient maintenance and maintenance of electrical components in the control cabinet. In addition, the complex wire connection between electrical components not only easily entangles each other, forming visual and operational confusion, but also greatly increases the difficulty of the staff to arrange the lines. Therefore, it is particularly urgent and important to develop a new type of bearing device that can overcome the above limitations and improve the operation convenience and maintenance efficiency of the control cabinet. SUMMARY

[0004] The utility model discloses an industrial automatic control system uses control cabinet's bearing device to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: an industrial automatic control system uses control cabinet's bearing device, including an industrial automatic control system uses the heat abstractor of electrical cabinet, including the cabinet body, wherein the cabinet body front end is installed with the protective door, the cabinet body lower extreme is opened with the air inlet, wherein the air inlet upper side is equipped with the air inlet fan, and the air inlet fan sets up in the cabinet body inner chamber, the cabinet body top is opened with the exhaust hole, wherein the exhaust fan is installed in the exhaust hole, the cabinet body inner chamber four corners positions are provided with four identical support rods respectively, wherein four support rods are combined and form the rectangular frame structure, the cabinet body is equipped with a plurality of bearing plates, wherein the bearing plate sets up in the rectangular frame, and the bearing plate four corners are detachably connected with support rod respectively.

[0006] Preferably, the support rod two long sides are perpendicular and are bent to form a first bent side and a second bent side, wherein the first bent side of the support rod is higher than the second bent side, and the cross section of the support rod is in a groove shape.

[0007] Preferably, a linear guide rail is fixedly installed in the groove of the support rod along the length direction thereof, wherein the linear guide rail is fixedly connected with the bottom of the groove; and a sliding seat is arranged in the groove, wherein a sliding groove is formed on the side of the sliding seat close to the linear guide rail, and the sliding groove is in sliding connection with the linear guide rail.

[0008] Preferably, a clamping groove is formed on the side of the sliding seat away from the linear guide rail, wherein a plurality of arc-shaped elastic pieces are arranged on the side of the sliding seat close to the clamping groove, and the extrusion ends of the arc-shaped elastic pieces extend into the clamping groove.

[0009] Preferably, ventilation holes are uniformly arranged on the bearing plate, wherein the bearing plate is bent downward on the side close to the sliding seat to form a clamping plate; and the clamping plate is arranged in the clamping groove, wherein the extrusion ends of the arc-shaped elastic pieces abut against the clamping plate.

[0010] Preferably, a movable slot is vertically formed on the side of the sliding seat close to the first bent edge, wherein the first bent edge is arranged in the movable slot, and the width of the movable slot is substantially equal to the thickness of the first bent edge.

[0011] Preferably, a plurality of positioning holes are equidistantly formed on the first bent edge along the length direction thereof, wherein two guide through holes are formed on the sliding seat; the guide through holes are in communication with the movable slot, and the distance between the two guide through holes is adapted to the positions of the positioning holes.

[0012] Preferably, an avoiding slot is formed on the side of the movable slot away from the guide through hole, wherein the avoiding slot corresponds to the guide through hole.

[0013] Preferably, a positioning assembly is arranged on the outer wall of the sliding seat on the side close to the guide through hole, wherein the positioning assembly is connected with the positioning hole.

[0014] Preferably, the positioning assembly comprises a fixed plate, wherein positioning columns are arranged at the two ends of the fixed plate respectively; the distance between the two positioning columns is substantially equal to the distance between the two guide through holes, wherein the positioning columns pass through the guide through holes and are inserted into the positioning holes, and the top ends of the positioning columns extend into the avoiding slot; a spring is arranged in the middle of the side of the fixed plate close to the positioning columns, wherein a handle is fixedly installed on the other side of the fixed plate; one end of the spring is fixedly connected with the fixed plate, and the other end of the spring is fixedly connected with the sliding seat.

[0015] Compared with the prior art, the utility model have the advantages that: the detachable connecting structure between the bearing plate and the support rod is designed, so that the staff can easily disassemble and install the bearing plate without complicated operation process, thereby greatly improving the convenience of overhauling and maintaining the electrical elements; the air inlet hole and the air outlet hole are arranged on the cabinet body respectively, and the air inlet fan and the air outlet fan are used, so that the air circulation efficiency in the control cabinet is effectively improved, the heat dissipation demand of the electrical elements during long-time operation is ensured, and the service life of the equipment is prolonged; the design of the support rod not only forms a stable rectangular frame structure and enhances the bearing capacity of the cabinet body, but also provides additional stability and support force through the design of the first bending edge and the second bending edge, so that the safety and stability of the bearing plate and the electrical elements thereon are ensured; the sliding connection design of the sliding seat and the linear guide rail makes the position of the bearing plate in the rectangular frame flexible, meets the demand of different electrical element layout and installation height, and improves the utilization rate of the internal space of the control cabinet; the design of the positioning assembly enables the sliding seat to be firmly fixed on the support rod, and the cooperation of the positioning hole and the positioning column and the elastic force of the spring ensure the stability and reliability of the bearing plate after adjusting the position, avoid loosening caused by vibration or external force, and further improve the overall performance and service life of the control cabinet, thereby providing a powerful guarantee for the stable operation of the industrial automatic control system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the utility model;

[0017] Figure 2 is a structural schematic view of the cabinet body of the utility model;

[0018] Figure 3 is a structural schematic view of the support rod and the bearing plate of the utility model;

[0019] Figure 4 is an enlarged schematic view of the structure A shown in 3;

[0020] Figure 5 is a structural schematic view of the support rod of the utility model;

[0021] Figure 6a 、 6b is a structural schematic view of the sliding seat and the positioning assembly connection of the utility model.

[0022] Wherein: 1, cabinet body; 2, protective door; 3, air inlet; 4, air inlet fan; 5, air outlet; 6, air outlet fan; 7, support rod; 701, first bending edge; 702, second bending edge; 703, groove; 8, rectangular frame; 9, bearing plate; 10, linear guide rail; 11, sliding seat; 12, sliding groove; 13, clamping groove; 14, arc spring piece; 15, ventilation hole; 16, clamping plate; 17, movable slot; 18, positioning hole; 19, guide through hole; 20, avoiding groove; 21, positioning assembly; 2101, fixed plate; 2102, positioning column; 2103, spring; 2104, handle. DETAILED DESCRIPTION

[0023] The utility model will be made further detailed description in combination with the drawings.

[0024] Please combine with reference Figure 1 To figure 6, for realizing above-mentioned purpose, the utility model provides following technical scheme:

[0025] A kind of bearing device of control cabinet for industrial automatic control system, including the heat dissipation device of electrical cabinet for industrial automatic control system, including cabinet body 1, wherein cabinet body 1 front end is equipped with protective door 2;Cabinet body 1 lower end is equipped with air inlet 3, wherein air inlet 3 upper side is equipped with air inlet fan 4, and air inlet fan 4 is arranged in the inner chamber of cabinet body 1;Cabinet body 1 top end is equipped with air outlet 5, wherein air outlet 5 is equipped with air outlet fan 6;The inner chamber of cabinet body 1 four corners is respectively provided with four identical support rods 7, wherein four support rods 7 are combined to form rectangular frame 8 structure;Cabinet body 1 is equipped with multiple bearing plates 9, wherein bearing plate 9 is arranged in rectangular frame 8, and bearing plate 9 four corners are respectively detachably connected with support rod 7.

[0026] Cabinet body 1 as the main part of entire bearing device, is made of firm and durable material, ensure that the weight of electrical element and vibration and impact in daily operation can be withstood;Cabinet body 1 front end is designed with protective door 2, for protecting internal electrical element from the invasion of adverse factors such as dust, moisture etc. outside, while facilitating staff to carry out daily maintenance and overhaul;In order to improve the heat dissipation performance of control cabinet, cabinet body 1 lower end is equipped with air inlet 3, and air inlet fan 4 is installed on the upper side of air inlet 3;Air inlet fan 4 can inhale external cold air and send it into the inner chamber of cabinet body 1 when working;At the same time, cabinet body 1 top end is equipped with air outlet 5, and air outlet fan 6 is installed. Hot air in cabinet body 1 is extracted by air outlet fan 6 and discharged to the outside through air outlet 5, thereby forming an effective air convection system, ensuring the heat dissipation demand of electrical element in long-time running process.

[0027] Four support rods 7 which are same in structure are arranged at four corners of the inner cavity of the cabinet body 1, and the four support rods 7 form a stable rectangular frame 8 structure through surrounding, and the stable rectangular frame 8 structure provides reliable support for the bearing plate 9, the design of the support rod 7 not only considers the strength requirement, but also pays attention to the detachable connection function between the support rod 7 and the bearing plate 9; the bearing plate 9 is arranged in the rectangular frame 8 as the mounting platform of the electrical element, and four corners of the bearing plate 9 are connected with the support rod 7 through the detachable connection mode, so that the worker can easily take down or install the bearing plate 9 from or on the support rod 7, and the design not only facilitates the maintenance and maintenance of the electrical element, but also improves the flexibility of the internal space of the control cabinet.

[0028] When the control cabinet is put into use, the electrical element is mounted on the bearing plate 9, and along with the operation of the electrical element, the heat generated by the electrical element is effectively discharged out of the cabinet body 1 through the heat dissipation system, when the electrical element needs to be overhauled or maintained, the worker can easily disassemble the bearing plate 9 and take it out of the cabinet body 1, and after the overhaul or maintenance is completed, the bearing plate 9 is reinstalled on the support rod 7; the technical scheme provides a safe and stable control cabinet bearing device for the industrial automatic control system through the design of the reasonable heat dissipation system, the stable support rod 7 structure and the detachable bearing plate 9 connection mechanism.

[0029] Please refer to Figure 3 , Figure 5 , as an embodiment of the utility model, the two long sides of the support rod 7 are vertically bent to form a first bent side 701 and a second bent side 702, wherein the first bent side 701 of the support rod 7 is higher than the second bent side 702, and the cross section of the support rod 7 is in a groove shape; a linear guide rail 10 is fixedly installed in the groove 703 of the support rod 7 along the length direction, wherein the linear guide rail 10 is fixedly connected with the bottom of the groove 703; a sliding seat 11 is arranged in the groove 703, wherein a sliding groove 12 is formed in the side close to the linear guide rail 10 of the sliding seat 11, and the sliding groove 12 is slidably connected with the linear guide rail 10.

[0030] In the above scheme, the two long sides of the support rod 7 are respectively bent vertically upward to form a first bent edge 701 and a second bent edge 702. This design not only enhances the strength of the support rod 7, but also provides convenience for the subsequent installation and positioning of the sliding seat 11. In particular, the first bent edge 701 is designed to be higher than the second bent edge 702, and the height difference helps to achieve a more stable fixing effect during the subsequent installation process. The cross section of the support rod 7 is designed in the shape of a groove 703, which is designed to provide a space for installing the linear guide rail 10. The bottom of the groove 703 is flat, ensuring that the linear guide rail 10 can be stably installed thereon. At the same time, the side wall of the groove 703 also provides a certain guiding and supporting effect for the sliding seat 11. The linear guide rail 10 is fixedly installed in the groove 703 of the support rod 7 and is closely connected with the bottom of the groove 703. The installation position of the linear guide rail 10 is accurate, ensuring that the sliding seat 11 can maintain stability and accuracy during sliding. The length direction of the linear guide rail 10 is along the length direction of the support rod 7, providing a smooth sliding path for the sliding seat 11.

[0031] The sliding seat 11 is designed to match the shape of the linear guide rail 10, and a sliding groove 12 is formed on the side close to the linear guide rail 10. The width and depth of the sliding groove 12 are matched with the linear guide rail 10, ensuring that the sliding seat 11 can slide smoothly along the linear guide rail 10. This design of the sliding seat 11 not only improves the stability of sliding, but also makes the installation and disassembly process of the sliding seat 11 more convenient and fast. By slidingly connecting the sliding groove 12 of the sliding seat 11 with the linear guide rail 10, the free movement of the sliding seat 11 on the support rod 7 is achieved. This sliding connection method is not only simple and reliable, but also facilitates the adjustment of the position of the sliding seat 11 by the staff as needed. This design of the support rod 7 and the sliding seat 11 provides great convenience for the installation and positioning of the bearing plate 9. By adjusting the position of the sliding seat 11 on the support rod 7, the installation position of the bearing plate 9 can be easily changed, thereby meeting different electrical element layout requirements. At the same time, the sliding connection method of the linear guide rail 10 and the sliding seat 11 ensures the stability and accuracy of the bearing plate 9 during the installation and disassembly process.

[0032] Please refer to Figure 3 , Figure 4 and Figure 6a , 6b , as an embodiment of the present utility model, the sliding seat 11 is provided with a clamping groove 13 on the side away from the linear guide rail 10. The sliding seat 11 is provided with a plurality of arc-shaped elastic pieces 14 on the side close to the clamping groove 13, and the extrusion end of the arc-shaped elastic piece 14 extends into the clamping groove 13. The bearing plate 9 is uniformly provided with ventilation holes 15, and the side of the bearing plate 9 close to the sliding seat 11 is bent downward to form a clamping plate 16. The clamping plate 16 is arranged in the clamping groove 13, and the extrusion end of the arc-shaped elastic piece 14 abuts against the clamping plate 16.

[0033] In the above scheme, the sliding seat 11 is designed and provided with a clamping groove 13 on the side away from the linear guide rail 10, the shape and size of the clamping groove 13 are matched with the clamping plate 16 on the bearing plate 9; the bearing plate 9 is provided with a clamping plate 16 on the side close to the sliding seat 11, the clamping plate 16 is bent downward to form, the shape and size of the clamping plate 16 are matched with the clamping groove 13 on the sliding seat 11, and the clamping plate 16 is used to be connected with the clamping groove 13 and the arc-shaped elastic piece 14, the design of the clamping plate 16 not only realizes the stable connection between the bearing plate 9 and the sliding seat 11, but also makes the installation and dismounting process of the bearing plate 9 more convenient and fast; a plurality of arc-shaped elastic pieces 14 are installed on the side of the sliding seat 11 close to the clamping groove 13, the arc-shaped elastic pieces 14 have certain elasticity and toughness, the extrusion end of the arc-shaped elastic pieces 14 extends into the clamping groove 13, and the arc-shaped elastic pieces 14 are used to be tightly abutted with the clamping plate 16, so that the stable connection between the bearing plate 9 and the sliding seat 11 is realized; when the clamping plate 16 of the bearing plate 9 is inserted into the clamping groove 13, the extrusion end of the arc-shaped elastic piece 14 is deformed by the extrusion of the clamping plate 16; with the clamping plate 16 completely entering the clamping groove 13, the extrusion end of the arc-shaped elastic piece 14 returns to the original state and is tightly abutted against the clamping plate 16, so that the bearing plate 9 on the sliding seat 11 cannot be moved at will.

[0034] In order to improve the heat dissipation performance of the bearing plate 9, a plurality of ventilation holes 15 are uniformly arranged on the bearing plate 9, the ventilation holes 15 allow air to flow freely, and the heat generated by the electrical elements on the bearing plate 9 can be discharged in time.

[0035] The implementation of the connection process: when the bearing plate 9 is installed on the sliding seat 11, first, the clamping plate 16 is aligned with the clamping groove 13 and inserted, with the gradual entry of the clamping plate 16, the extrusion end of the arc-shaped elastic piece 14 is deformed by extrusion; when the clamping plate 16 completely enters the clamping groove 13, the extrusion end of the arc-shaped elastic piece 14 returns to the original state and is tightly abutted against the clamping plate 16, so that the stable connection between the bearing plate 9 and the sliding seat 11 is realized.

[0036] The implementation of the dismounting process: when the bearing plate 9 needs to be dismounted from the sliding seat 11, the bearing plate 9 is only slightly lifted upward to make the clamping plate 16 come out of the clamping groove 13, and damage to the clamping plate 16 or the clamping groove 13 will not occur in the dismounting process because the arc-shaped elastic piece 14 has certain elasticity.

[0037] Please refer to Figure 6a , 6b , as an embodiment of the utility model, the sliding seat 11 is vertically provided with a movable groove 17 on the side close to the first bent edge 701, the first bent edge 701 is arranged in the movable groove 17, and the width of the movable groove 17 is equivalent to the thickness of the first bent edge 701.

[0038] In the above scheme, the sliding seat 11 is close to one side of the first bending edge 701, and a movable groove 17 is vertically formed. The movable groove 17 is designed to cooperate with the first bending edge 701 to provide additional stability and guidance for the position adjustment of the sliding seat 11 on the support rod 7. The width of the movable groove 17 is accurately designed to be equivalent to the thickness of the first bending edge 701. The matching of the size ensures that the first bending edge 701 can be smoothly inserted into the movable groove 17, and the stability of the connection will not be affected by loosening or shaking during the movement of the sliding seat 11. The first bending edge 701 is arranged to be inserted into the movable groove 17 of the sliding seat 11. When the sliding seat 11 moves along the linear guide rail 10 and reaches the required position, the first bending edge 701 is guided and inserted into the movable groove 17. This design not only provides additional support and fixation for the sliding seat 11, but also limits the movement of the sliding seat 11 in the direction perpendicular to the linear guide rail 10, thereby enhancing the stability of the entire structure.

[0039] Please refer to Figure 5 and Figure 6a 、 6b , as an embodiment of the present application, the first bending edge 701 is equidistantly provided with a plurality of positioning holes 18 along the length direction, and two guide through holes 19 are formed on the sliding seat 11. The guide through holes 19 are communicated with the movable groove 17, and the distance between the two guide through holes 19 is matched with the position of the positioning hole 18. The movable groove 17 is provided with a avoiding groove 20 away from the guide through hole 19.

[0040] In the above scheme, the first bending edge 701 is equidistantly provided with a plurality of positioning holes 18 along the length direction, and two guide through holes 19 are formed on the sliding seat 11. The guide through holes 19 are communicated with the movable groove 17, and the distance between the two guide through holes 19 is matched with the position of the positioning hole 18. The movable groove 17 is provided with a avoiding groove 20 away from the guide through hole 19.

[0041] Please refer to Figure 6a 、 6bAs an embodiment of the utility model, the sliding seat 11 is provided with a positioning assembly 21 on the side of the outer wall close to the guide through hole 19, wherein the positioning assembly 21 is connected with the positioning hole 18; the positioning assembly 21 comprises a fixed plate 2101, wherein the fixed plate 2101 is provided with a positioning column 2102 at both ends respectively; the distance between the two positioning columns 2102 is equivalent to the distance between the two guide through holes 19, wherein the positioning column 2102 penetrates the guide through hole 19 and is inserted into the positioning hole 18, and the top end of the positioning column 2102 extends into the avoiding groove 20; the fixed plate 2101 is provided with a spring 2103 in the middle of the side close to the positioning column 2102, wherein the other side of the fixed plate 2101 is fixedly provided with a handle 2104; one end of the spring 2103 is fixedly connected with the fixed plate 2101, wherein the other end of the spring 2103 is fixedly connected with the sliding seat 11.

[0042] In the above scheme, the core component of the positioning assembly 21 is the fixed plate 2101, which is provided with a positioning column 2102 at both ends respectively. The distance between the two positioning columns 2102 is accurately designed to be equivalent to the distance between the two guide through holes 19 on the sliding seat 11, so as to ensure that they can smoothly penetrate the guide through hole 19 and be inserted into the positioning hole 18 of the first bending edge 701; the design of the positioning column 2102 not only realizes the accurate positioning of the sliding seat 11, but also provides stable support; a spring 2103 is arranged in the middle of the side of the fixed plate 2101 close to the positioning column 2102, one end of the spring 2103 is fixedly connected with the fixed plate 2101, and the other end is fixedly connected with the outer wall of the sliding seat 11; this elastic connection mode enables the positioning column 2102 to generate a certain pre-tightening force when being inserted into the positioning hole 18, thereby enhancing the connection stability and reliability between the sliding seat 11 and the first bending edge 701; in order to facilitate the operation of the positioning assembly 21 by the staff, a handle 2104 is fixedly installed on the other side of the fixed plate 2101, and the design of the handle 2104 enables the staff to easily lift or put down the fixed plate 2101, thereby realizing the installation, disassembly or position adjustment of the sliding seat 11.

[0043] DETAILED DESCRIPTION, but those skilled in the art will understand that these are only illustrative, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A bearing device of a control cabinet for industrial automatic control system, comprising a heat dissipation device of an electrical cabinet for industrial automatic control system, comprising a cabinet body (1), wherein a protective door (2) is installed at the front end of the cabinet body (1); characterized in that, The lower end of the cabinet body (1) is provided with an air inlet hole (3), wherein the upper side of the air inlet hole (3) is provided with an air inlet fan (4), and the air inlet fan (4) is arranged in the inner cavity of the cabinet body (1); the top end of the cabinet body (1) is provided with an air outlet hole (5), wherein the air outlet hole (5) is provided with an air outlet fan (6); four support rods (7) which are the same structure are arranged at the four corners of the inner cavity of the cabinet body (1), wherein the four support rods (7) form a rectangular frame (8) structure; a plurality of bearing plates (9) are arranged in the cabinet body (1), wherein the bearing plates (9) are arranged in the rectangular frame (8), and the four corners of the bearing plates (9) are detachably connected with the support rods (7).

2. The load bearing device for a control cabinet of an industrial automatic control system according to claim 1, characterized in that, The two long sides of the support rod (7) are respectively vertically bent to form a first bent side (701) and a second bent side (702), wherein the first bent side (701) of the support rod (7) is higher than the second bent side (702), and the cross section of the support rod (7) is in the form of a groove (703).

3. The load bearing device for a control cabinet of an industrial automation control system according to claim 2, characterized in that, A linear guide rail (10) is fixedly installed in the groove (703) of the support rod (7) along the length direction thereof, wherein the linear guide rail (10) is fixedly connected with the bottom of the groove (703); a sliding seat (11) is arranged in the groove (703), wherein a sliding groove (12) is formed in the side of the sliding seat (11) close to the linear guide rail (10), and the sliding groove (12) is slidably connected with the linear guide rail (10).

4. The load bearing device for a control cabinet of an industrial automatic control system according to claim 3, characterized in that, A clamping groove (13) is formed in the side of the sliding seat (11) away from the linear guide rail (10), wherein a plurality of arc-shaped elastic pieces (14) are arranged on the side of the sliding seat (11) close to the clamping groove (13), and the pressing ends of the arc-shaped elastic pieces (14) extend into the clamping groove (13).

5. The load bearing device for a control cabinet of an industrial automatic control system according to claim 1, characterized in that, Ventilation holes (15) are uniformly arranged on the bearing plate (9), wherein a clamping plate (16) is formed by bending downward the side of the bearing plate (9) close to the sliding seat (11); the clamping plate (16) is arranged in the clamping groove (13), wherein the pressing ends of the arc-shaped elastic pieces (14) abut against the clamping plate (16).

6. The load bearing device for a control cabinet of an industrial automatic control system according to claim 3, characterized in that, An active groove (17) is vertically formed in the side of the sliding seat (11) close to the first bent side (701), wherein the first bent side (701) is arranged in the active groove (17), and the width of the active groove (17) is equivalent to the thickness of the first bent side (701).

7. The load bearing device for a control cabinet of an industrial automation control system according to claim 6, characterized in that, A plurality of positioning holes (18) are equidistantly formed in the first bent side (701) along the length direction thereof, wherein two guide through holes (19) are formed in the sliding seat (11); the guide through holes (19) are communicated with the active groove (17), wherein the distance between the two guide through holes (19) is adapted to the positions of the positioning holes (18).

8. The load bearing device for a control cabinet of an industrial automation control system according to claim 7, characterized in that, A positioning assembly (21) is arranged on the outer wall of the side of the sliding seat (11) close to the guide through holes (19), wherein the positioning assembly (21) is connected with the positioning holes (18).

9. The load bearing device for a control cabinet of an industrial automation control system according to claim 8, characterized in that, The positioning assembly (21) comprises a fixed plate (2101), wherein the fixed plate (2101) is provided with a positioning column (2102) at both ends respectively; the spacing of the two positioning columns (2102) is equivalent to the spacing of the two guide through holes (19), wherein the positioning column (2102) penetrates the guide through hole (19) and is inserted into the positioning hole (18), and the top end of the positioning column (2102) extends into the avoiding groove (20); the fixed plate (2101) is provided with a spring (2103) in the middle of the side close to the positioning column (2102), wherein the other side of the fixed plate (2101) is fixedly installed with a handle (2104); one end of the spring (2103) is fixedly connected with the fixed plate (2101), wherein the other end of the spring (2103) is fixedly connected with the sliding seat (11).

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