Crank arm box convenient to assemble

Abstract

The utility model belongs to the technical field of crank arm box production, and particularly relates to a crank arm box convenient to assemble, which comprises a crank arm box body, and connecting blocks are symmetrically and fixedly connected to the top end of the crank arm box body. At the moment, the sealing ring abuts against the connecting block to seal the interior of the sealing cover, so that an internal mounting assembly is not corroded and rusted, at the moment, the sealing cover is turned over, the clamping sleeve is clamped on the surface of the nut to be fixedly clamped, then the two handles are clamped by fingers to screw the sealing cover, and therefore the nut can be easily taken out without a wrench. And the angle needs to be switched back and forth when the wrench is screwed, the speed is low, the bolt can be taken out to disassemble the crank arm box body, and therefore a new crank arm box body can be assembled in the same assembling mode, and the effect that the crank arm box body can be conveniently and rapidly disassembled and assembled is effectively achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankcase production, and in particular relates to a crankcase which is easy to assemble. Background Art

[0002] The crank box usually refers to a component used to connect and support the operating mechanism in some mechanical equipment. In high-voltage circuit breakers, the crank box connects the circuit breaker operating mechanism with the circuit breaker body and mainly plays the role of supporting the operating mechanism.

[0003] The specification of Chinese patent CN204935523U discloses a crankcase sealing ring assembly fixture, including a screw and a flange, the flange is arranged in the middle of the connecting sleeve, the outer surface of the upper part of the connecting sleeve is provided with an external thread, a tapered through hole is arranged in the connecting sleeve, the diameter of the tapered through hole is larger at the top and smaller at the bottom, a threaded sleeve is connected to the upper external thread of the connecting sleeve, a screw connecting sleeve is arranged at the upper end of the threaded sleeve, an internal threaded through hole threadedly connected to the screw is arranged in the screw connecting sleeve, the screw is threadedly connected in the screw connecting sleeve, and the lower end of the screw passes through the threaded sleeve, and the lower end of the screw is connected to a pressure plate that can pass through the smallest diameter end of the tapered through hole through a bearing. The purpose of this utility model is to provide a crankcase sealing ring assembly fixture, which has a simple structure and is easy to assemble. It can prevent the skeleton sealing ring from being worn or skewed during assembly, ensure the assembly accuracy of the skeleton sealing ring; effectively improve the assembly qualification rate, and meet the dynamic sealing requirements.

[0004] Due to long-term high-intensity and full-load operation, the existing crank arm box may crack or even break, which directly affects the normal operation and safety of the equipment and needs to be replaced. The current crank arm boxes are fixed with screws, and the surface will corrode and rust after long-term use, making them difficult to remove.

[0005] Therefore, the present application provides a crank box that is easy to assemble to meet the needs. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides a crank box which is easy to assemble and has the feature of convenient assembly.

[0007] To achieve the above object, the utility model provides the following technical solutions: a crank arm box that is easy to assemble, comprising a crank arm box body, a connection block is symmetrically fixedly connected to the top of the crank arm box body, a mounting assembly is detachably connected to the connection block, and a protective assembly is detachably connected to the outside of the mounting assembly;

[0008] The installation assembly includes a connection block having a screw hole drilled thereon, a bolt is threadedly connected to the screw hole, and a nut is sleeved on the surface of the bolt;

[0009] The protective component includes a sealing cover which is sleeved on the outside of the nut, a handle is symmetrically fixedly connected to the side wall of the sealing cover, a clamping sleeve is fixedly connected to the end of the sealing cover away from the connecting block, and the clamping sleeve is engaged with the nut, a clamping groove is drilled on the connecting block located on the outer circle of the screw hole, a clamping block is fixedly connected to the end of the clamping sleeve close to the screw hole, and the clamping block is engaged with the screw hole, and a sealing ring is sleeved on the surface of the clamping block which contacts the sealing cover.

[0010] As a preferred technical solution of the crank box of the utility model which is convenient for assembly, an annular groove is cut on the sealing cover located on the outer ring of the ferrule, and a shell is inserted into the annular groove.

[0011] As a preferred technical solution of the crank box of the utility model which is convenient for assembly, the outer diameter of the shell is smaller than the inner diameter of the block.

[0012] As a preferred technical solution of the crankcase box of the utility model which is convenient to assemble, the sealing cover is made of stainless steel and the outer shell is made of plastic.

[0013] As a preferred technical solution of the crankcase box of the utility model which is convenient to assemble, the outer shell and the sealing cover are coated with an anti-rust coating.

[0014] As an optimal technical solution of the crank arm box that is easy to assemble in the utility model, a sliding hole is drilled on the side end of the bolt, and a movable bolt is slidably connected in the sliding hole.

[0015] As an optimal technical solution of the crank box of the utility model which is convenient to assemble, the bolts and the movable bolts are spliced ​​to form a damping telescopic rod structure.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. When the crank arm box body is damaged after long-term use, the block on the sealing cover can be pulled out from the screw hole. At this time, the sealing cover is sealed by the contact between the sealing ring and the connecting block, so that the internal installation components are not corroded or rusted. At this time, the sealing cover is turned over, and the ferrule is clamped on the surface of the nut to fix it. Then, the two handles are clamped with fingers to twist the sealing cover, so that the nut can be easily taken out without the help of a wrench. The wrench needs to switch angles back and forth when twisting, and the speed is slow. The bolts can be taken out to disassemble the crank arm box body, so that the new crank arm box body can be assembled in the same way, effectively achieving the effect of convenient and fast disassembly and assembly of the crank arm box body.

[0018] 2. When assembling the crank box body, the bolts can be inserted into the screw holes to pass through the two connecting blocks. Then, the outer shell can be adjusted according to the depth of the sealing cover to ensure that the sealing cover can be covered on its surface and engaged with the slot. After adjustment, it can be fixed by the nut, so as to achieve the effect of freely adjusting the exposed length of the movable bolt according to the depth of the sealing cover after adjusting the distance between the two connecting blocks. The outer shell can be stuck in the annular groove so that it can be covered on the surface of the ferrule to avoid the same corrosion effect on the exposed ferrule. Similarly, when using the ferrule, the outer shell can be pulled out and stuck in the sealing ring on the reverse side to avoid accidental dropping during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the axonometric structure of the crank box of the utility model;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the connection block of the utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of the installation assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the sealing cover structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the bolt structure of the utility model.

[0025] In the figure: 1. crankcase box body; 2. connecting block; 3. sealing cover; 4. ferrule; 5. slot; 6. nut; 7. bolt; 8. handle; 9. screw hole; 10. sealing ring; 11. block; 12. annular groove; 13. outer shell; 14. movable bolt; 15. sliding hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1-4A crank box that is easy to assemble comprises a crank box body 1, a connecting block 2 is symmetrically fixedly connected to the top of the crank box body 1, a mounting assembly is detachably connected to the connecting block 2, and a protective assembly is detachably connected to the outside of the mounting assembly;

[0029] The installation assembly includes a connection block 2 on which a screw hole 9 is drilled, a bolt 7 is threadedly connected to the screw hole 9, and a nut 6 is sleeved on the surface of the bolt 7;

[0030] The protective component includes a sealing cover 3 which is sleeved on the outside of the nut 6, and a handle 8 is symmetrically fixedly connected to the side wall of the sealing cover 3. A clamping sleeve 4 is fixedly connected to the end of the sealing cover 3 away from the connecting block 2, and the clamping sleeve 4 is engaged with the nut 6. A clamping groove 5 is drilled on the connecting block 2 located on the outer circle of the screw hole 9, and a clamping block 11 is fixedly connected to the end of the clamping sleeve 4 close to the screw hole 9, and the clamping block 11 is engaged with the screw hole 9. A sealing ring 10 is sleeved on the surface of the clamping block 11, which is in conflict with the sealing cover 3.

[0031] This solution can achieve the following: when the crankcase box body 1 is damaged after long-term use, the block 11 on the sealing cover 3 can be pulled out from the screw hole 9. At this time, the sealing ring 10 contacts the connecting block 2 to seal the sealing cover 3, so that the internal installation components are not corroded or rusted. At this time, the sealing cover 3 is turned over, and the sleeve 4 is clamped on the surface of the nut 6 for fixed engagement. Then, the two handles 8 are clamped by fingers to twist the sealing cover 3, so that the nut 6 can be easily taken out without the aid of a wrench. The wrench needs to switch angles back and forth when twisting, and the speed is slow. The bolt 7 can be taken out to disassemble the crankcase box body 1, so that the new crankcase box body 1 can be assembled in the same way, effectively achieving the effect of convenient and fast disassembly and assembly of the crankcase box body 1.

[0032] Example 2

[0033] See also Figure 3-5, an annular groove 12 is bored on the sealing cover 3 located on the outer ring of the ferrule 4, a shell 13 is inserted into the annular groove 12, the outer diameter of the shell 13 is smaller than the inner diameter of the block 11, the sealing cover 3 is made of stainless steel, the shell 13 is made of plastic, and the outer shell 13 and the sealing cover 3 are coated with an anti-rust coating. A sliding hole 15 is bored on the side end of the bolt 7, and a movable bolt 14 is slidably connected in the sliding hole 15. The bolt 7 and the movable bolt 14 are spliced ​​to form a damping telescopic rod structure. When the crank arm box body 1 is assembled, the bolt 7 can be inserted into the screw hole 9 to pass through the two connecting blocks 2, and then through The outer shell 13 is telescopically adjusted according to the depth of the sealing cover 3, so as to ensure that the sealing cover 3 can be sleeved on its surface and engaged with the card slot 5, and then fixed by the nut 6 after adjustment, so as to achieve the effect of freely adjusting the exposed length of the movable bolt 14 according to the depth of the sealing cover 3 after adjusting the distance between the two connecting blocks 2. The outer shell 13 can be stuck in the annular groove 12 so that it can be sleeved on the surface of the ferrule 4 to avoid the same corrosion effect on the exposed ferrule 4. Similarly, when using the ferrule 4, the outer shell 13 can be pulled out and stuck in the sealing ring 10 on the reverse side to avoid accidental dropping during use.

[0034] The working principle and use process of the utility model: during the use of the utility model, firstly, the scheme can be achieved: when the crankcase box body 1 is damaged after long-term use, the block 11 on the sealing cover 3 can be pulled out from the screw hole 9. At this time, the sealing ring 10 contacts with the connecting block 2 to seal the sealing cover 3, so that the internal installation components are not corroded or rusted. At this time, the sealing cover 3 is turned over, and the clamping sleeve 4 is clamped on the surface of the nut 6 for fixed engagement. Then, the two handles 8 are clamped by the fingers to twist the sealing cover 3, so that the nut 6 can be easily taken out without the help of a wrench, and the wrench needs to switch angles back and forth when twisting, and the speed is slow. The bolt 7 can be taken out to disassemble the crankcase box body 1, so that the new crankcase box body 1 can be assembled in the same way, effectively achieving the effect of convenient and fast disassembly and assembly of the crankcase box body 1;

[0035] Next, when assembling the crank box body 1, the bolt 7 can be inserted into the screw hole 9 to pass through the two connecting blocks 2, and then the outer shell 13 can be adjusted by telescoping according to the depth of the sealing cover 3 to ensure that the sealing cover 3 can be sleeved on its surface and engaged with the slot 5. After adjustment, it is fixed by the nut 6, so as to achieve the effect of freely adjusting the exposed length of the movable bolt 14 according to the depth of the sealing cover 3 after adjusting the distance between the two connecting blocks 2. The outer shell 13 can be stuck in the annular groove 12 so that it is sleeved on the surface of the ferrule 4 to avoid the same corrosion effect on the exposed ferrule 4. Similarly, when using the ferrule 4, the outer shell 13 can be pulled out and stuck in the sealing ring 10 on the opposite side to avoid accidental dropping during use.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crank box that is easy to assemble, comprising a crank box body (1), characterized in that: The top of the crank box body (1) is symmetrically and fixedly connected with a connection block (2), the connection block (2) is detachably connected with a mounting assembly, and the mounting assembly is detachably connected with a protection assembly outside. The installation assembly comprises a connection block (2) on which a screw hole (9) is bored, a bolt (7) is internally threadedly connected to the screw hole (9), and a nut (6) is sleeved on the surface of the bolt (7); The protective component comprises a sealing cover (3) sleeved on the outside of the nut (6), the side wall of the sealing cover (3) is symmetrically fixedly connected with a handle (8), the sealing cover (3) is fixedly connected with a clamping sleeve (4) at one end away from the connecting block (2), and the clamping sleeve (4) is engaged with the nut (6), a clamping groove (5) is cut on the connecting block (2) at the outer circle of the screw hole (9), the clamping sleeve (4) is fixedly connected with a clamping block (11) at one end close to the screw hole (9), and the clamping block (11) is engaged with the screw hole (9), and a sealing ring (10) is sleeved on the surface of the clamping block (11) and contacts the sealing cover (3).

2. The easy-to-assemble crankcase according to claim 1, characterized in that: An annular groove (12) is cut on the sealing cover (3) located on the outer ring of the ferrule (4), and a housing (13) is inserted into the annular groove (12).

3. The easy-to-assemble crankcase according to claim 2, characterized in that: The outer diameter of the housing (13) is smaller than the inner diameter of the block (11).

4. The easy-to-assemble crankcase according to claim 2, characterized in that: The sealing cover (3) is made of stainless steel, and the outer shell (13) is made of plastic.

5. The easy-to-assemble crankcase according to claim 2, characterized in that: The outer surface of the housing (13) and the sealing cover (3) are both coated with an anti-rust coating.

6. The easy-to-assemble crankcase according to claim 1, characterized in that: A sliding hole (15) is bored at the side end of the bolt (7), and a movable bolt (14) is slidably connected in the sliding hole (15).

7. The easy-to-assemble crankcase according to claim 6, characterized in that: The bolt (7) and the movable bolt (14) are spliced ​​together to form a damping telescopic rod structure.

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