Sealing structure for explosion-proof electrical box of explosion-proof forklift

Abstract

The utility model belongs to the technical field of explosion-proof electrical boxes, and discloses an explosion-proof electrical box sealing structure of an explosion-proof forklift. The explosion-proof forklift explosion-proof electrical box sealing structure comprises a box body, ventilation holes are formed in the left side and the right side of the box body respectively, dustproof plates are fixedly connected into the two ventilation holes, a heightening base is fixedly connected to the inner bottom wall of the box body, and an electrical assembly is fixedly connected to the heightening base. According to the sealing structure of the explosion-proof electrical box of the explosion-proof forklift, through the design of the opening and closing mechanism, the opening angle of the shifting plate can be adjusted according to the temperature and humidity in the box body, the shifting plate can be further used for improving the explosion-proof performance, and damage to internal components caused by abnormal internal temperature and humidity is further reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof electrical boxes, specifically a sealing structure for an explosion-proof electrical box for an explosion-proof forklift. Background Technology

[0002] An explosion-proof electrical box is an explosion-proof enclosure specifically designed to protect electrical equipment in hazardous environments. Its main function is to ensure that electrical equipment will not explode due to short circuits, overloads, sparks, or other reasons in environments containing flammable or explosive gases or dust.

[0003] Most current explosion-proof electrical boxes have poor sealing performance. When working in harsh environments for a long time, dust may enter and affect the internal electrical components. Moreover, the working environment of explosion-proof forklifts is often not limited to dusty environments. In rainy weather, poor sealing can also damage electrical components. Furthermore, most electrical box end covers have poor explosion-proof performance. Therefore, we urgently need a sealing structure for explosion-proof electrical boxes in forklifts to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing structure for an explosion-proof electrical box of an explosion-proof forklift, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a sealing structure for an explosion-proof electrical box of an explosion-proof forklift, including a box body, ventilation holes are respectively opened on the left and right sides of the box body, a dustproof plate is fixedly connected to the two ventilation holes, a raised base is fixedly connected to the inner bottom wall of the box body, and an electrical component is fixedly connected to the raised base;

[0006] The box is equipped with an opening and closing mechanism, and the box is equipped with a sealing mechanism.

[0007] The opening and closing mechanism includes a bracket, which is fixedly connected to the left and right sides of the housing and located on the front and rear sides of the ventilation hole. A drive motor is fixedly connected to the bracket, and one end of a transmission rod is fixedly connected to the output end of the drive motor. The other end of the transmission rod is rotatably connected to a bearing in a corresponding bearing hole on the bracket. A toggle plate is fixedly connected to the transmission rod.

[0008] Through the above technical solution, the drive motor is used to drive the toggle plate to open or close, and the opening angle can be controlled. The opening and closing data is the data monitored by the temperature and humidity sensor. After data analysis, the drive motor can be controlled to start. The control device is a common controller. This controller has an existing structure. The controller is located inside the box and is used to analyze the output of the temperature and humidity sensor and control the drive motor. There are four toggle plates. Two are set on each of the left and right sides of the box. The two toggle plates are located on the front and rear sides of the box and cover the ventilation holes.

[0009] Preferably, the opening and closing mechanism further includes a rectangular groove, which is formed on the inner walls of the left and right sides of the housing, and is located on the upper and lower sides of the positions of two corresponding actuating plates. A round rod is fixedly connected in the rectangular groove, and a telescopic rod is hinged to the round rod. A connecting block is fixedly connected to the movable end of the telescopic rod. A sliding groove is formed on the opposite side of the actuating plate corresponding to the rectangular groove, and a slide rail is fixedly connected in the sliding groove. The connecting block is slidably connected to the slide rail, and the actuating plate is in contact with the inner wall of the housing.

[0010] Through the above technical solution, the rectangular slots of this application are opened on the left and right sides of the box body. There are four rectangular slots on each side, and two are opened on the front and rear sides of the box body respectively. The rectangular slots are located on the box body and correspond to the upper and lower sides of the toggle plate. The rectangular slots are connected to the slide rail on the toggle plate through the telescopic rod and the connecting block to support the posture of the toggle plate after it is opened.

[0011] Preferably, the sealing mechanism includes an end cap located above the housing. A limiting plate is fixedly connected to the outer side of the upper part of the housing. A sealing plate is fixedly connected to the outer side of the end cap and corresponding to the position of the limiting plate. Hydraulic rods are fixedly connected to both the front and rear sides of the housing. The output ends of the two hydraulic rods are fixedly installed with the end cap. The sealing plate is inserted into the limiting plate.

[0012] Through the above technical solution, the sealing plate of this application extends the joint position between the end cover and the box body, which can improve the sealing effect of the box body.

[0013] Preferably, the end cap has a sliding through hole, and a second sealing plate slides and magnetically attracts within the sliding through hole. The second sealing plate has a placement through hole, and a third sealing plate is inserted and magnetically attracted within the placement through hole.

[0014] Through the above technical solutions, both sealing plate 2 and sealing plate 3 of this application are reinforcing plates, which are used to improve the explosion-proof performance of the enclosure and also increase the sealing effect.

[0015] Preferably, a sealing gasket is fixedly connected to one side of the end cap corresponding to the box body, and the sealing gasket is in contact with the inner wall of the box body.

[0016] Preferably, a temperature and humidity sensor is fixedly connected to the raised base.

[0017] Through the above technical solution, the sensor in this application is a conventional component used to monitor the temperature inside the chamber.

[0018] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0019] 1. The explosion-proof electrical box of this explosion-proof forklift has a sealed structure. Through the design of the opening and closing mechanism, the opening angle of the toggle plate can be adjusted according to the temperature and humidity inside the box. The toggle plate can also be used to improve the explosion-proof performance, further reducing the damage to internal components caused by abnormal internal temperature and humidity.

[0020] 2. The explosion-proof electrical box of this explosion-proof forklift has a sealing structure. Through the design of the sealing mechanism, it improves the sealing performance between the box body and the end cover, reduces the infiltration of dust or rainwater in the air, and also improves the explosion-proof performance of the box body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a side view of the structure of this utility model;

[0023] Figure 3 This utility model Figure 2 Schematic diagram of the sectional structure of the middle AA section;

[0024] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure of the middle CC section;

[0025] Figure 5 This utility model Figure 2 Schematic diagram of the cross-sectional structure of DD.

[0026] In the diagram: 1. Enclosure; 2. Ventilation holes; 3. Dustproof panel; 4. Elevated base; 5. Electrical components;

[0027] 6. Opening and closing mechanism; 61. Bracket; 62. Drive motor; 63. Transmission rod; 64. Actuating plate; 65. Rectangular groove; 66. Round rod; 67. Telescopic rod; 68. Connecting block; 69. Slide groove; 610. Slide rail;

[0028] 7. Sealing mechanism; 71. End cap; 72. Limiting plate; 73. Sealing plate one; 74. Hydraulic rod; 75. Sliding through hole; 76. Sealing plate two; 77. Placement through hole; 78. Sealing plate three; 79. Sealing gasket;

[0029] 8. Temperature and humidity sensor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-5 This utility model provides a technical solution: a sealing structure for an explosion-proof electrical box of an explosion-proof forklift, including a box body 1, ventilation holes 2 are respectively opened on the left and right sides of the box body 1, a dustproof plate 3 is fixedly connected in the two ventilation holes 2, a raised base 4 is fixedly connected to the inner bottom wall of the box body 1, and an electrical component 5 is fixedly connected on the raised base 4.

[0032] An opening and closing mechanism 6 is provided inside the box 1, and a sealing mechanism 7 is provided on the box 1.

[0033] The opening and closing mechanism 6 includes a bracket 61, which is fixedly connected to the left and right sides of the housing 1 and located on the front and rear sides of the ventilation hole 2. A drive motor 62 is fixedly connected to the bracket 61, and one end of a transmission rod 63 is fixedly connected to the output end of the drive motor 62. The other end of the transmission rod 63 is rotatably connected to a bearing in a corresponding bearing hole on the bracket 61. A toggle plate 64 is fixedly connected to the transmission rod 63.

[0034] The drive motor 62 is used to drive the toggle plate 64 to open or close, and can control the opening angle. The opening and closing data is the data monitored by the temperature and humidity sensor 8. After data analysis, the drive motor 62 can be controlled to start. The control device is a common controller. This controller is an existing structure. The controller is located inside the housing 1 and is used to analyze the output of the temperature and humidity sensor 8 and control the drive motor 62. There are four toggle plates 64. Two are set on each of the left and right sides of the housing 1. The two toggle plates are located on the front and rear sides of the housing 1 respectively and cover the ventilation hole 2.

[0035] The opening and closing mechanism 6 also includes a rectangular groove 65, which is opened on the inner walls of the left and right sides of the housing 1. The rectangular groove 65 is located on the upper and lower sides of the two corresponding toggle plates 64. A round rod 66 is fixedly connected in the rectangular groove 65. A telescopic rod 67 is hinged to the round rod 66. A connecting block 68 is fixedly connected to the movable end of the telescopic rod 67. A sliding groove 69 is opened on the toggle plate 64 at the opposite side position of the rectangular groove 65. A slide rail 610 is fixedly connected in the sliding groove 69. The connecting block 68 is slidably connected to the slide rail 610. The toggle plate 64 is in contact with the inner wall of the housing 1.

[0036] The rectangular slots 65 of this application are opened on the left and right sides of the housing 1. There are four rectangular slots 65 on each side, and two are opened on the front and rear sides of the housing 1 respectively. The rectangular slots 65 are located on the housing 1 and correspond to the upper and lower sides of the toggle plate 64. The rectangular slots 65 are connected to the slide rail 610 on the toggle plate 64 through the telescopic rod 67 and the connecting block 64, which is used to support the posture of the toggle plate 64 after it is opened.

[0037] The sealing mechanism 7 includes an end cap 71, which is located above the housing 1. A limiting plate 72 is fixedly connected to the outer side of the upper part of the housing 1. A sealing plate 73 is fixedly connected to the outer side of the end cap 71 and at the position corresponding to the limiting plate 72. Hydraulic rods 74 are fixedly connected to both the front and rear sides of the housing 1. The output ends of the two hydraulic rods 74 are fixedly installed with the end cap 71. The sealing plate 73 is inserted into the limiting plate 72.

[0038] The sealing plate 73 of this application extends the joint between the end cover 71 and the housing 1, which can improve the sealing effect of the housing 1.

[0039] The end cap 71 has a sliding through hole 75, and a second sealing plate 76 is slidably and magnetically attracted in the sliding through hole 75. A placement through hole 77 is opened in the second sealing plate 76, and a third sealing plate 78 is inserted into and magnetically attracted in the placement through hole 77.

[0040] Both sealing plate 2 (76) and sealing plate 3 (78) in this application are reinforcing plates used to improve the explosion-proof performance of the enclosure 1 and also increase the sealing effect.

[0041] The end cap 71 is fixedly connected to a sealing gasket 79 on one side corresponding to the box body 1, and the sealing gasket 79 is in contact with the inner wall of the box body 1.

[0042] A temperature and humidity sensor 8 is fixedly connected to the raised base 4.

[0043] The sensor used in this application is a conventional component and is used to monitor the temperature inside the enclosure 1.

[0044] When the explosion-proof electrical box sealing structure of the explosion-proof forklift is working, if the temperature and humidity sensor 8 detects any deviation in the temperature and humidity data inside the box 1, it will transmit the data to the controller inside the box 1 and control the drive motor 62 to open the lever 64. The opening angle is adapted to the data transmitted by the temperature and humidity sensor 8. After the lever 64 rotates to the corresponding angle, the sliding cooperation between the connecting block 68 on the telescopic rod 67 and the slide rail 610 will support the position of the lever 64 after displacement.

[0045] The operator installs the end cap 71 onto the output end of the hydraulic rod 74, thereby fixing the end cap 71 onto the hydraulic rod 74. The output end of the hydraulic rod 74 is moved downwards, and the sealing plate 1 73 is inserted into the limiting plate 72. When the end cap 71 contacts the housing 1, the sealing gasket 76 contacts the inner wall of the housing 1. The sealing plate 2 76 is inserted into the sliding through hole 75 and made flush with both sides of the end cap 71. The sealing plate 2 76 is then fixed by magnetic attraction. The sealing plate 3 78 is inserted into the placement through hole 77 and made flush with the side of the sealing plate 2 76. The sealing plate 3 78 is then fixed by magnetic attraction.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure of an explosion-proof electrical box of an explosion-proof forklift, comprising a box body (1), characterized in that: Both sides of the box (1) are provided with ventilation holes (2), and the ventilation holes (2) are fixedly connected with dustproof plates (3); the inner bottom wall of the box (1) is fixedly connected with a raised base (4), and the raised base (4) is fixedly connected with an electrical assembly (5); The box (1) is provided with an opening and closing mechanism (6), and the box (1) is provided with a sealing mechanism (7); The opening and closing mechanism (6) comprises a bracket (61), the bracket (61) is fixedly connected to the left and right sides of the box (1) and located on the front and rear sides of the ventilation hole (2), the bracket (61) is fixedly connected with a drive motor (62), and one end of the drive motor (62) is fixedly connected with a transmission rod (63), the other end of the transmission rod (63) is rotatably connected with the bearing hole in the bracket (61), and the transmission rod (63) is fixedly connected with a toggle plate (64).

2. The explosion-proof forklift truck explosion-proof electrical box seal structure according to claim 1, characterized by: The opening and closing mechanism (6) further comprises a rectangular groove (65), the rectangular groove (65) is formed in the inner wall of the left and right sides of the box (1), and the rectangular groove (65) is located on the upper and lower sides of the two corresponding toggle plates (64), the rectangular groove (65) is fixedly connected with a round rod (66), the round rod (66) is hingedly connected with a telescopic rod (67), the movable end of the telescopic rod (67) is fixedly connected with a connecting block (68), the toggle plate (64) is provided with a sliding groove (69) on the opposite side surface position corresponding to the rectangular groove (65), and the sliding groove (69) is fixedly connected with a sliding rail (610), the connecting block (68) and the sliding rail (610) are slidably connected, and the toggle plate (64) is in contact with the inner wall of the box (1).

3. The seal for an explosion-proof electric box of a fork truck as set forth in claim 2, wherein: The sealing mechanism (7) comprises an end cover (71), the end cover (71) is located above the box (1), the outer side of the upper part of the box (1) is fixedly connected with a limiting insertion plate (72), the outer side of the end cover (71) and the position corresponding to the limiting insertion plate (72) are fixedly connected with a sealing plate one (73), the front and rear sides of the box (1) are fixedly connected with hydraulic rods (74), and the output ends of the two hydraulic rods (74) are fixedly connected with the end cover (71), and the sealing plate one (73) is inserted with the limiting insertion plate (72).

4. The seal for an explosion-proof fork truck electrical box according to claim 3, wherein: The end cover (71) is provided with a sliding hole (75), and the sliding hole (75) is slidably connected with a sealing plate two (76) and magnetically connected with a sealing plate three (78).

5. The sealed electrical box of claim 4, wherein: The end cover (71) is fixedly connected with a sealing gasket (79) corresponding to one side of the box (1), and the sealing gasket (79) is in contact with the inner wall of the box (1).

6. The sealed electrical box of claim 5, wherein: The raised base (4) is fixedly connected with a temperature and humidity sensor (8).

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