General explosion-proof operating handle for explosion-proof crane

Abstract

The application discloses a general explosion-proof operating handle for an explosion-proof crane, which comprises an explosion-proof shell, wherein the explosion-proof shell is provided with an explosion-proof emergency stop button module, an explosion-proof lifting hook selection knob module, an explosion-proof key switch module, any two of two first explosion-proof plugs, or a pair of explosion-proof additional control modules, an explosion-proof start button module and at least one pair of explosion-proof direction button modules; and a cable introduction module is arranged on the top of the explosion-proof shell. The operating handle has high safety, is designed in a modular structure, and can meet the use requirements of different scenes by selecting and assembling appropriate modules, so that the general applicability of the explosion-proof operating handle is improved, the production cost is reduced, the handle is convenient for later maintenance, and has high popularization value.

Description

Technical Field

[0001] This invention relates to the field of lifting and transport machinery control technology, and in particular to a universal explosion-proof operating handle for explosion-proof cranes. Background Technology

[0002] In modern industrial production, cranes, as core equipment for material handling, are widely used in various working conditions and enterprises. However, in specific industries such as petroleum, chemical, gunpowder manufacturing, and flour processing, flammable and explosive gases or dust are often present in the working environment. To ensure operational safety, explosion-proof operating handles are required in these scenarios. Because the operational requirements differ in different situations, each operating handle needs to be specially designed, resulting in poor versatility and increased production costs. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the existing technology, it is desirable to provide a universal explosion-proof operating handle for explosion-proof cranes. It has high safety, adopts a modular structure design, and can meet the usage needs of different scenarios by selecting suitable modules for assembly. This improves the versatility of the explosion-proof operating handle, reduces production costs, facilitates later maintenance, and has high promotional value.

[0004] The present invention provides a universal explosion-proof operating handle for explosion-proof cranes, including an explosion-proof housing with an internal protection level of not less than IP66; the front of the explosion-proof housing is provided with a first mounting hole, a pair of second mounting holes, a third mounting hole and three pairs of fourth mounting holes; An explosion-proof emergency stop button module is installed in the first mounting hole; Install an explosion-proof hook selection knob module, an explosion-proof key switch module, and any two of the two first explosion-proof plugs in a pair of second mounting holes, or install a pair of explosion-proof additional control modules; An explosion-proof power-on button module is installed in the third mounting hole; At least one pair of explosion-proof directional button modules are installed in the three pairs of fourth mounting holes, and a second explosion-proof plug is installed in the fourth mounting hole where no explosion-proof directional button module is installed. The top of the explosion-proof housing is equipped with a cable entry module that is electrically connected to the explosion-proof electrical control cabinet of the crane.

[0005] Furthermore, the explosion-proof housing includes a front half housing and a rear half housing that interlock with each other. The front half housing and the rear half housing are fixedly connected by a plurality of screws distributed circumferentially. A sealing strip is provided between the front half housing and the rear half housing on the inner side of each screw.

[0006] Furthermore, the back of the rear half of the shell is provided with an ergonomic grip surface, and the two sides of the ergonomic grip surface are symmetrically provided with wave-shaped anti-slip textures.

[0007] Furthermore, the front half and the rear half are respectively formed by integral die casting of aluminum alloy.

[0008] Furthermore, the front of the explosion-proof housing is provided with a first groove and a second groove distributed vertically, the first mounting hole, the second mounting hole and the third mounting hole are provided in the first groove; the fourth mounting hole is provided in the second groove.

[0009] Furthermore, the cable entry module includes a control cable, and an explosion-proof armored gland is provided on the top of the explosion-proof housing. One end of the control cable is electrically connected to the explosion-proof electrical control cabinet of the crane, and the other end passes through the explosion-proof armored gland and extends into the explosion-proof housing. A cable fixing clip is provided near the top of the explosion-proof housing. The explosion-proof emergency stop button module, explosion-proof start button module, explosion-proof direction button module, and explosion-proof hook selection knob module, explosion-proof key switch module or explosion-proof additional control module installed in the second mounting hole are all electrically connected to the control cable.

[0010] Furthermore, the top of the explosion-proof housing is symmetrically provided with lifting holes on both sides of the explosion-proof armored gland. Suspension wire ropes are provided on both sides of the control cable. One end of the suspension wire rope passes through the lifting hole on the same side and is fixed by a rope clamp, while the other end is fixedly connected to the crane.

[0011] Furthermore, the end of the suspension wire rope away from the explosion-proof housing passes through the eye bolt and is secured by a rope clamp, and the eye bolt is threadedly connected to the crane.

[0012] Compared with the prior art, the beneficial effects of the present invention are: The explosion-proof operating handle of this invention adopts a modular structure design and uses a unified explosion-proof housing structure. Suitable modules are selected and assembled onto the explosion-proof housing to meet the usage requirements of most working conditions. Each module adopts an explosion-proof structure, which ensures high safety, improves the versatility of the explosion-proof operating handle, reduces production costs, facilitates later maintenance, and has high promotional value.

[0013] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0014] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the main structure of the explosion-proof operating handle; Figure 2This is a side view of the explosion-proof operating handle. Figure 3 A schematic diagram of the exploded structure of an explosion-proof operating handle; Figure 4 A schematic diagram of the cable introduction module.

[0015] The diagram shows: 1. Explosion-proof housing; 2. Explosion-proof emergency stop button module; 3. Explosion-proof hook selection knob module; 4. Explosion-proof key switch module; 5. Explosion-proof additional control module; 6. Explosion-proof power-on button module; 7. Explosion-proof direction button module; 8. Cable entry module. 11. Front half housing; 12. Rear half housing; 13. Screw; 14. Sealing strip; 15. First mounting hole; 16. Second mounting hole; 17. Third mounting hole; 18. Fourth mounting hole; 19. First explosion-proof plug; 110. Second explosion-proof plug; 111. Ergonomic grip surface; 112. Wavy anti-slip texture; 113. First groove; 114. Second groove; 115. Lifting hole; 81. Control cable; 82. Explosion-proof armored gland; 83. Cable clamp; 84. Suspension wire rope; 85. Rope clip; 86. Lifting eye bolt. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Please refer to Figures 1-4 The present invention provides a universal explosion-proof operating handle for explosion-proof cranes, including an explosion-proof housing 1 with an internal protection level of not less than IP66; the front of the explosion-proof housing 1 is provided with a first mounting hole 15, a pair of second mounting holes 16, a third mounting hole 17 and three pairs of fourth mounting holes 18; An explosion-proof emergency stop button module 2 is installed in the first mounting hole 15; An explosion-proof hook selection knob module 3, an explosion-proof key switch module 4, and any two of the two first explosion-proof plugs 19 are installed in a pair of second mounting holes 16, or a pair of explosion-proof additional control modules 5 are installed. An explosion-proof power-on button module 6 is installed in the third mounting hole 17; At least one pair of explosion-proof directional button modules 7 are installed in the three pairs of fourth mounting holes 18, and a second explosion-proof plug 110 is installed in the fourth mounting hole 18 where no explosion-proof directional button module 7 is installed. The top of the explosion-proof housing 1 is equipped with a cable entry module 8 that is electrically connected to the explosion-proof electrical control cabinet of the crane.

[0019] In this embodiment, the explosion-proof operating handle adopts a uniform explosion-proof housing 1 structure with excellent protection level, and has a first mounting hole 15, a second mounting hole 16, a third mounting hole 17 and a fourth mounting hole 18. The explosion-proof emergency stop button module 2 and the explosion-proof power-on button module 6 are mandatory modules, and are installed in the first mounting hole 15 and the third mounting hole 17 respectively. The explosion-proof hook selector knob module 3, explosion-proof key switch module 4, and explosion-proof additional control module 5 are optional modules. They are selected and installed into the second mounting hole 16 according to requirements. The empty second mounting hole 16 is sealed by the first explosion-proof plug 19 to ensure the overall protection performance of the operating handle. Among them, the explosion-proof additional control module 5 is configured with functions according to requirements. For example, when the crane hook has a steering function, the explosion-proof additional control module 5 is configured to control the hook to rotate clockwise and the other to control the hook to rotate counterclockwise. As another example, when the crane has a grab bucket, the explosion-proof additional control module 5 is configured to control the grab bucket to open and the other to close. Three pairs of explosion-proof directional button modules 7 are optionally installed into the fourth mounting hole 18 as required. The three pairs of explosion-proof directional button modules 7 typically include hook raising / lowering buttons, trolley forward / reverse buttons, and trolley left / right buttons. Users select the corresponding explosion-proof directional button modules 7 for assembly according to the crane configuration. The empty fourth mounting hole 18 is sealed by the second explosion-proof plug 110 to ensure the overall protection performance of the operating handle.

[0020] The explosion-proof operating handle of this application adopts a modular structure design and uses a unified explosion-proof housing 1 structure. Suitable modules are selected and assembled onto the explosion-proof housing 1 to meet the usage requirements of most working conditions. Each module adopts an explosion-proof structure, which ensures high safety, improves the versatility of the explosion-proof operating handle, reduces production costs, facilitates later maintenance, and has high promotional value.

[0021] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, the explosion-proof housing 1 includes a front half housing 11 and a rear half housing 12 that are interlocked with each other. The front half housing 11 and the rear half housing 12 are fixedly connected by a number of screws 13 distributed along the circumference. A sealing strip 14 is provided between the front half housing 11 and the rear half housing 12 on the inner side of each screw 13, providing excellent protective performance.

[0022] In a preferred embodiment, such as Figure 2 and Figure 3As shown, the back of the rear half of the housing 12 is provided with an ergonomic grip surface 111 to improve the operator's comfort when holding the operating handle; the two sides of the ergonomic grip surface 111 are symmetrically provided with wave anti-slip texture 112 to reduce the risk of accidental slippage.

[0023] In a preferred embodiment, the front half-shell 11 and the rear half-shell 12 are respectively made of aluminum alloy by die casting, which has high structural strength, is not easy to corrode and rust, has a long service life, and greatly reduces maintenance costs and downtime risks.

[0024] In a preferred embodiment, such as Figure 1 and Figure 3 As shown, the front of the explosion-proof housing 1 is provided with a first groove 113 and a second groove 114 distributed vertically. The first mounting hole 15, the second mounting hole 16 and the third mounting hole 17 are provided in the first groove 113; the fourth mounting hole 18 is provided in the second groove 114, thereby assembling the button modules with different functions in separate sections and improving the convenience of operation.

[0025] In a preferred embodiment, such as Figure 1 and Figure 4 As shown, the cable entry module 8 includes a control cable 81. An explosion-proof armored gland 82 is provided on the top of the explosion-proof housing 1. One end of the control cable 81 is electrically connected to the explosion-proof electrical control cabinet of the crane, and the other end passes through the explosion-proof armored gland 82 and extends into the explosion-proof housing 1. A cable fixing clip 83 is provided near the top of the explosion-proof housing 1. The explosion-proof emergency stop button module 2, the explosion-proof start button module 6, the explosion-proof direction button module 7, and the explosion-proof hook selection knob module 3, the explosion-proof key switch module 4, or the explosion-proof additional control module 5 installed in the second mounting hole 16 are all electrically connected to the control cable 81.

[0026] In this embodiment, the control cable 81 is equipped with an explosion-proof armored gland 82, and the explosion-proof housing 1 is provided with a cable fixing clip 83 to prevent the control cable 81 from becoming loose or displaced, which would cause the explosion-proof to fail.

[0027] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the top of the explosion-proof housing 1 is symmetrically provided with lifting holes 115 on both sides of the explosion-proof armored gland 82. Suspension wire ropes 84 are respectively provided on both sides of the control cable 81. One end of the suspension wire rope 84 passes through the lifting hole 115 on the same side and is fixed by rope clamp 85, and the other end is fixedly connected to the crane.

[0028] In this embodiment, the explosion-proof housing 1 is connected to the crane by a suspension wire rope 84, which protects the control cable 81 and ensures the safety of the operating handle.

[0029] In a preferred embodiment, such as Figure 4As shown, the end of the suspension wire rope 84 away from the explosion-proof housing 1 passes through the eye bolt 86 and is fixed by the rope clamp 85. The eye bolt 86 is threadedly connected to the crane, and the connection is firm, ensuring structural safety.

[0030] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A universal explosion-proof operating handle for explosion-proof cranes, characterized in that, It includes an explosion-proof housing (1) with an internal protection level of not less than IP66; the front of the explosion-proof housing (1) is provided with a first mounting hole (15), a pair of second mounting holes (16), a third mounting hole (17) and three pairs of fourth mounting holes (18); An explosion-proof emergency stop button module (2) is installed in the first mounting hole (15); Install any two of the following in a pair of second mounting holes (16): explosion-proof hook selection knob module (3), explosion-proof key switch module (4), and two first explosion-proof plugs (19); or install a pair of explosion-proof additional control modules (5). An explosion-proof power-on button module (6) is installed in the third mounting hole (17); At least one pair of explosion-proof directional button modules (7) are installed in the three pairs of fourth mounting holes (18), and a second explosion-proof plug (110) is installed in the fourth mounting hole (18) where no explosion-proof directional button module (7) is installed. The top of the explosion-proof housing (1) is provided with a cable entry module (8) that is electrically connected to the explosion-proof electrical control cabinet of the crane.

2. The explosion-proof crane universal operating handle according to claim 1, characterized in that, The explosion-proof housing (1) includes a front half housing (11) and a rear half housing (12) that are interlocked with each other. The front half housing (11) and the rear half housing (12) are fixedly connected by a plurality of screws (13) distributed along the circumference. A sealing strip (14) is provided between the front half housing (11) and the rear half housing (12) on the inner side of each screw (13).

3. The universal explosion-proof operating handle for explosion-proof cranes according to any one of claims 2, characterized in that, The rear half shell (12) is provided with an ergonomic grip surface (111) on the back, and the two sides of the ergonomic grip surface (111) are symmetrically provided with wave anti-slip texture (112).

4. The universal explosion-proof operating handle for explosion-proof cranes according to claim 3, characterized in that, The front half shell (11) and the rear half shell (12) are respectively formed by integral die casting of aluminum alloy.

5. The universal explosion-proof operating handle for explosion-proof cranes according to any one of claims 1-4, characterized in that, The explosion-proof housing (1) has a first groove (113) and a second groove (114) distributed vertically on its front side. The first mounting hole (15), the second mounting hole (16) and the third mounting hole (17) are located in the first groove (113); the fourth mounting hole (18) is located in the second groove (114).

6. The universal explosion-proof operating handle for explosion-proof cranes according to claim 1, characterized in that, The cable entry module (8) includes a control cable (81). An explosion-proof armored gland (82) is provided on the top of the explosion-proof housing (1). One end of the control cable (81) is electrically connected to the explosion-proof electrical control cabinet of the crane, and the other end passes through the explosion-proof armored gland (82) and extends into the explosion-proof housing (1). A cable fixing clip (83) is provided near the top of the explosion-proof housing (1). The explosion-proof emergency stop button module (2), explosion-proof start button module (6), explosion-proof direction button module (7), and explosion-proof hook selection knob module (3), explosion-proof key switch module (4), or explosion-proof additional control module (5) installed in the second mounting hole (16) are all electrically connected to the control cable (81).

7. The universal explosion-proof operating handle for explosion-proof cranes according to claim 6, characterized in that, The top of the explosion-proof housing (1) is provided with symmetrical hoisting holes (115) on both sides of the explosion-proof armored gland (82). Suspension wire ropes (84) are provided on both sides of the control cable (81). One end of the suspension wire rope (84) passes through the hoisting hole (115) on the same side and is fixed by a rope clamp (85). The other end is fixedly connected to the crane.

8. The universal explosion-proof operating handle for explosion-proof cranes according to claim 7, characterized in that, The end of the suspension wire rope (84) away from the explosion-proof housing (1) passes through the eye bolt (86) and is fixed by the rope clamp (85). The eye bolt (86) is threaded to the crane.

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