A bolt device for power distribution with a multi-stage locking mechanism

Abstract

The present invention relates to the technical field of bolt devices, specifically a bolt device for power distribution with a multi-stage locking mechanism, comprising a center bolt and an outer sleeve column, wherein the center bolt is inserted into the outer sleeve column, the threaded column at the bottom of the center bolt and the inner wall of the outer sleeve column are connected by internal and external threads, the center bolt has a hollow structure, and an adjustable stop mechanism is provided inside the center bolt. The present invention proposes a bolt device for power distribution with a multi-stage locking mechanism. Since the adjustable stop mechanism is provided, the bolt device can be fixedly installed even when the operating surface of the device does not exist in the same space, making operation more convenient; and since the locking mechanism is provided, once the bolt device is installed, its structure will not easily loosen and rotate, making it safer and more stable to use.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt devices, in particular to a bolt device for power distribution with a multi-stage locking mechanism. Background Art

[0002] Distribution engineering is an important branch of power system engineering, focusing on the safe, reliable, and economical transmission and distribution of electricity from the end of the transmission system (usually a regional substation or switchyard) to end users (such as households, businesses, and industrial users). Distribution engineering requires the use of transformers, switchgear, protection equipment, transmission equipment, poles, towers, and other devices, which require a large number of bolt devices. Traditional bolts are used to connect two or more objects and are often used in conjunction with nuts, such as Figure 1 As shown, for example: when connecting two objects A and B, first stack A and B together, place the nut on side A, pass the stud from side B through BA, then fix the nut with your hands or a tool such as a wrench, and then tighten the stud to complete the installation; however, in power distribution projects, there are certain usage scenarios that make the use of the bolt device very troublesome: when the two sides AB do not belong to the same space, such as installing an object on the cabinet wall inside or outside the distribution cabinet, if the operator tightens the bolt inside, he cannot fix the nut on the outside. In this way, the two will rotate synchronously when tightening, and the bolt cannot be installed stably, requiring multiple operators to cooperate in the operation; in some installation locations (such as next to the railway), there will be large vibrations, which can easily cause the bolt device to loosen and rotate, so improvement is needed. Summary of the Invention

[0003] The object of the present invention is to provide a bolt device for power distribution with a multi-stage locking mechanism to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a bolt device for power distribution with a multi-stage locking mechanism, comprising a center bolt and an outer sleeve, wherein the center bolt is inserted into the outer sleeve, the threaded column at the bottom of the center bolt and the inner wall of the outer sleeve being connected by internal and external threads, the center bolt having a hollow interior and an adjustable stopper mechanism being provided therein;

[0005] The upper end of the outer sleeve is provided with an installation groove, in which a rotating ring is rotatably installed. The rotating ring is provided with a locking mechanism for locking the outer sleeve and the blocking mechanism inside the outer sleeve.

[0006] Preferably, an anti-slip groove is provided on the side wall of the outer sleeve.

[0007] Preferably, a buffer ring is connected to the bottom of the outer sleeve column, and the buffer ring is used for buffering and anti-slip.

[0008] Preferably, the stopper mechanism includes several movable stops, several bottom side grooves are formed at the bottom end of the threaded column of the central bolt, a movable stopper is provided in each bottom side groove, a groove is formed on one end of the movable stopper located inside the central bolt, a connecting shaft is provided in the groove, a traction belt is fixed on the connecting shaft, and the end of the traction belt is connected to the top plate;

[0009] The stop mechanism also includes a driving assembly arranged inside the center bolt, and the driving assembly is used to adjust the position state of the movable stop block, and the driving assembly includes an inner core, a groove for use with an inner hexagonal wrench is provided on the top of the inner core, and such a groove is also provided on the screw head of the center bolt. A circular hole is opened at the center of this groove, and the inner core is inserted into the circular hole. Two inner hexagonal wrenches of different models and sizes can be used to respectively screw the center bolt and the inner core, and the lower section of the inner core has a larger diameter than the upper section. A thread is opened on the side wall of the lower section of the inner core, and the lower section of the inner core and the inner side wall of the center bolt are connected through internal and external threads. A push rod is connected to the bottom of the inner core, and the push rod and the top plate correspond to each other. By rotating the inner core, it is lowered and the push rod is lowered to push the top plate down. The movable stop block can be pulled by a traction belt to change it from a vertical state to a horizontal state, and a limited support ring is provided on the side wall of the bottom end of the center bolt, and the limit support ring is used to limit the movable stop block.

[0010] Preferably, the movable stopper is rotatably installed in the bottom side groove through the rotating shaft on the side wall. When the device is not in use, the movable stopper is in a vertical state. A torsion spring connection can be provided at the connection between the rotating shaft and the inner wall of the bottom side groove so that the movable stopper can automatically adjust to a vertical state and retract into the interior of the threaded column of the center bolt without the need for manual adjustment.

[0011] Preferably, an anti-slip pad is provided on the upper surface of the end of the movable stopper.

[0012] Preferably, the traction belt is a flexible high-strength traction wire, the diameter of the traction belt is 1-2 mm, and the traction belt is made of one of aramid fiber, ultra-high molecular weight polyethylene fiber, and multi-strand braided thin metal wire rope, and needs to have certain flexibility and high strength.

[0013] Preferably, a plurality of positioning holes are opened on the bottom surface of the installation groove, and positioning pins are movably inserted on the rotating ring, and the positioning pins are correspondingly inserted in the positioning holes. The bottom of the positioning pins is a permanent magnet, and the bottom of the positioning pins is adsorbed inside the positioning holes.

[0014] Preferably, the locking mechanism includes a locking assembly mounted on a rotating ring, a cavity is provided in the rotating ring, the locking assembly includes a locking pin that movably passes through the cavity, a pull block is provided at the outer end of the locking pin, the pull block is used for the user to dial, an inner movable plate is provided on the portion of the locking pin located in the cavity, a group of tightening springs are connected to the side wall of the inner movable plate, a fixing hole is provided on the side wall of the connection between the threaded column and the screw head of the central bolt, the inner end of the locking pin corresponds to the fixing hole, and when the device is installed, the rotating ring is first rotated so that the locking pin and the fixed pin are engaged. The fixed holes are aligned, the tightening spring pushes the inner movable plate so that the inner end of the locking pin is inserted into the fixing hole, and then the positioning pin is inserted into the positioning hole at the corresponding position to fix the rotating ring. The operation steps are not unique. You can also insert the positioning pin into the positioning hole to fix the rotating ring first, and then rotate the center bolt and outer sleeve to install it. If there is a slight gap between the locking pin and the fixing hole and they are not aligned, because the buffer washer has a buffering function, you can make slight adjustments to align them after the installation is completed. At the same time, the center bolt and outer sleeve are relatively fixed and will not loosen at will.

[0015] The card corrugation on the inner card plate is embedded in the clamping groove, which can fix the inner core to prevent rotation and loosening after the device is installed.

[0016] Preferably, the diameter of the airbag boss is larger than the inner diameter of the fixing hole opening, so that when one airbag boss is compressed, if there are multiple airbag bosses, the remaining airbag bosses 17 will not expand and stretch, and only the airbag on the inner mounting ring can expand.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention proposes a bolt device for power distribution with a multi-stage locking mechanism. Since an adjustable blocking mechanism is provided, the bolt device can be fixedly installed even when the operating surface of the device does not exist in the same space, and the operation is more convenient. In addition, since a locking mechanism is provided, when the bolt device is installed, its structure will not loosen or rotate easily, and it is safer and more stable to use.

[0019] 2. When actually connecting A and B, pass the bottom end of the center bolt through the mounting holes on A and B, then screw the inner core to lower it, and then the top rod will lower to push the top plate down. The movable stopper can be pulled by the traction belt to change it from a vertical state to a horizontal state. At this time, the movable stopper and the outer sleeve column are located on the A and B surfaces respectively. Then rotate the center bolt or the outer sleeve column, and the outer sleeve column and the movable stopper are pressed on the A and B surfaces respectively. In this way, the bolts can also be installed in the same operating space.

[0020] 3. After the installation is completed, first rotate the rotating ring to align the locking pin and the fixing hole, tighten the spring to push the inner movable plate so that the inner end of the locking pin is inserted into the fixing hole, and then insert the positioning pin into the positioning hole at the corresponding position to fix the rotating ring. At the same time, the center bolt and the outer sleeve are also relatively fixed and will not loosen at will. When the locking pin is inserted into the fixing hole, the airbag boss is compressed, causing the airbag on the inner mounting ring to expand and push the inner clamping plate to move. The card ridges on the inner clamping plate are embedded in the clamping groove, which can fix the inner core to prevent rotation and loosening after the device is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the bolt device in the prior art.

[0022] Figure 2 It is a schematic structural diagram of the bolt device of the present invention.

[0023] Figure 3 This is a structural diagram of the bolt device of the present invention from another perspective.

[0024] Figure 4 This is a schematic diagram of the center bolt structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the outer casing column structure of the present invention.

[0026] Figure 6 It is a schematic diagram of the inner core connection structure of the present invention.

[0027] Figure 7 It is a schematic diagram of the connection structure of the movable stopper of the present invention.

[0028] Figure 8 This is a schematic structural diagram of the locking assembly of the present invention.

[0029] Figure 9 This is a schematic diagram of the inner core top connection structure of the present invention.

[0030] Figure 10 For the present invention Figure 9 Schematic diagram of another embodiment of the structure in FIG.

[0031] In the figure: center bolt 1, outer sleeve column 2, buffer washer 201, bottom side groove 3, movable stopper 4, connecting shaft 5, traction belt 6, top plate 7, inner core 8, push rod 9, limit support ring 10, rotating ring 11, positioning hole 12, positioning plug 13, locking assembly 14, locking plug 1401, pull block 1402, inner movable plate 1403, tightening spring 1404, fixing hole 15, inner mounting ring 16, airbag boss 17, inner clamping plate 18, clamping groove 19. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 10 The present invention provides a technical solution: a bolt device for power distribution with a multi-stage locking mechanism, comprising a center bolt 1 and an outer sleeve column 2. The side wall of the outer sleeve column 2 is provided with an anti-slip groove to facilitate clamping and fixing it. The bottom of the outer sleeve column 2 is connected with a buffer ring 201, which is used for buffering and anti-slip. The center bolt 1 is inserted into the outer sleeve column 2, and the threaded column at the bottom of the center bolt 1 and the inner wall of the outer sleeve column 2 are connected by internal and external threads.

[0034] The interior of the center bolt 1 is a hollow structure, and an adjustable stop mechanism is provided inside the center bolt 1. The stop mechanism includes several movable stops 4. Several bottom side grooves 3 are opened at the bottom end of the threaded column of the center bolt 1, and a movable stop 4 is provided in each bottom side groove 3. The upper surface of the end of the movable stop 4 is provided with an anti-slip pad. The movable stop 4 is rotatably installed in the bottom side groove 3 through the rotating shaft on the side wall. When the device is not in use, the movable stop 4 is in a vertical state. A torsion spring connection can be provided at the connection between the rotating shaft and the inner wall of the bottom side groove 3, so that the movable stop 4 can automatically adjust to a vertical state and retract into the interior of the threaded column of the center bolt 1 without manual adjustment.

[0035] A groove is provided on one end of the movable stopper 4 located inside the center bolt 1, and a connecting shaft 5 is provided in the groove. A traction belt 6 is fixed on the connecting shaft 5, and the traction belt 6 is a flexible high-strength traction wire. The diameter of the traction belt 6 is 1-2 mm, and can also be set according to needs. The traction belt 6 is made of one of aramid fiber, ultra-high molecular weight polyethylene fiber, and multi-strand braided fine metal wire rope, and needs to have certain flexibility and high strength. The end of the traction belt 6 is connected to a top plate 7; the stopper mechanism also includes a driving component arranged inside the center bolt 1, and the driving component is used to adjust the position state of the movable stopper 4. The driving component includes an inner core 8, and the top of the inner core 8 is provided with a groove for use with an inner hexagonal wrench. The head is also provided with such a groove, and a circular hole is opened at the center of this groove. The inner core 8 is inserted into the circular hole. Two hexagonal wrenches of different models and sizes can be used to screw the center bolt 1 and the inner core 8 respectively. The diameter of the lower section of the inner core 8 is larger than that of the upper section. A thread is opened on the side wall of the lower section of the inner core 8. The lower section of the inner core 8 and the inner side wall of the center bolt 1 are connected by internal and external threads. A push rod 9 is connected to the bottom of the inner core 8, and the push rod 9 corresponds to the top plate 7. By rotating the inner core 8 to make it descend and then the push rod 9 descends to push the top plate 7 down, the movable stopper 4 can be pulled by the traction belt 6 to make it change from a vertical state to a horizontal state. A limiting support ring 10 is provided on the side wall of the bottom end of the center bolt 1. The limiting support ring 10 is used to limit the movable stopper 4.

[0036] A mounting groove is provided at the upper end of the outer sleeve column 2, and a rotating ring 11 is rotatably installed in the mounting groove. A number of positioning holes 12 are provided on the bottom surface of the mounting groove. A positioning plug 13 is movably inserted on the rotating ring 11, and the positioning plug 13 is correspondingly inserted in the positioning hole 12. The bottom of the positioning plug 13 is a permanent magnet, and the bottom of the positioning plug 13 is adsorbed inside the positioning hole 12. A locking mechanism is provided on the rotating ring 11, and the locking mechanism is used to lock the outer sleeve column 2 and the blocking mechanism inside the outer sleeve column 2. The locking mechanism includes a locking assembly 14 mounted on the rotating ring 11, a cavity is provided in the rotating ring 11, the locking assembly 14 includes a locking pin 1401 that is movable through the cavity, a pull block 1402 is provided at the outer end of the locking pin 1401, the pull block 1402 is used for the user to dial, an inner movable plate 1403 is provided on the portion of the locking pin 1401 located in the cavity, a group of tightening springs 1404 are connected to the side wall of the inner movable plate 1403, a fixing hole 15 is provided on the side wall of the connection between the threaded column and the screw head of the central bolt 1, the inner end of the locking pin 1401 corresponds to the fixing hole 15, and when the device is installed, the rotating ring 11 is first rotated to make the locking pin 14 01 is aligned with the fixing hole 15, and the tightening spring 1404 pushes the inner movable plate 1403 so that the inner end of the locking pin 1401 is inserted into the fixing hole 15, and then the positioning pin 13 is inserted into the positioning hole 12 at the corresponding position to fix the rotating ring 11. The operation steps are not unique. You can also first insert the positioning pin 13 into the positioning hole 12 to fix the rotating ring 11, and then rotate and install the center bolt 1 and the outer sleeve column 2. If there is a slight gap between the locking pin 1401 and the fixing hole 15 and they are not aligned, because the buffer washer 201 has a buffering function, you can make slight adjustments to align them after the installation is completed. At the same time, the center bolt 1 and the outer sleeve column 2 are also relatively fixed and will not loosen at will.

[0037] A circle of snap-fit ​​grooves 19 are provided on the upper side wall of the inner core 8, and an inner mounting ring 16 is embedded in the inner side wall of the connection between the threaded column and the screw head of the center bolt 1, and several annular inflatable air bags are provided on the inner wall of the inner mounting ring 16. An inner card plate 18 is connected to the air bag, and the inner card plate 18 is embedded and installed on the inner wall of the inner mounting ring 16. The inner card plate 18 can only move inward and outward relative to the inner mounting ring 16 and cannot move left and right. A card ridge is provided on the inner side wall of the inner card plate 18. When the movable stopper 4 is unfolded to a horizontal state, the position height of the card ridge corresponds to the snap-fit ​​groove 19, and the length of the snap-fit ​​groove 19 can be set longer to ensure its correspondence. An air bag boss 17 is connected to the outer wall of the inner mounting ring 16. The air bag boss 17 is located in the fixing hole 15. When the locking column When 1401 is inserted into the fixing hole 15, the airbag boss 17 is compressed, causing the airbag on the inner mounting ring 16 to expand and push the inner clamping plate 18 to move. The card corrugation originally fits on the side wall of the inner core 8, so the moving distance is very small. The card corrugation on the inner clamping plate 18 is embedded in the clamping groove 19, which can fix the inner core 8 to prevent it from rotating and loosening after the device is installed. If the airbag expands and pushes the inner clamping plate 18, the card corrugation is not aligned with the clamping groove 19. When this happens, if the inner core 8 is not loose, it will not affect the use of the device. If the inner core 8 loosens and rotates, then when the inner core 8 rotates to the clamping groove 19 and is aligned with the card corrugation, due to the internal air pressure of the airbag, the card corrugation will automatically embed into the clamping groove 19. At this time, the rotation angle of the inner core 8 is very small, which still will not affect the use of the device.

[0038] In some embodiments, the airbag boss 17 and the fixing hole 15 may be provided with multiple convenient and locking pins 1401 for alignment. The diameter of the airbag boss 17 is larger than the inner diameter of the opening of the fixing hole 15, so that when the airbag boss 17 at one place is compressed, if there are multiple airbag bosses 17, the remaining airbag bosses 17 will not expand and stretch, and only the airbag on the inner mounting ring 16 can expand.

[0039] When actually connecting A and B, pass the bottom end of the center bolt 1 through the mounting holes on A and B, then screw the inner core 8 to lower it, and then the top rod 9 lowers to push the top plate 7 down, and the movable stopper 4 can be pulled by the traction belt 6 to change it from a vertical state to a horizontal state. At this time, the movable stopper 4 and the outer sleeve column 2 are respectively located on the A and B surfaces, and then rotate the center bolt 1 or the outer sleeve column 2 (fix one and rotate the other), and the outer sleeve column 2 and the movable stopper 4 are pressed on the A and B surfaces respectively, so that the bolts can be installed in the same operating space; after the installation is completed, first rotate the rotating ring 11 to lock the plug column 1401 and the fixing hole 1 5 is aligned, the pressing spring 1404 pushes the inner movable plate 1403 so that the inner end of the locking pin 1401 is inserted into the fixing hole 15, and then the positioning pin 13 is inserted into the positioning hole 12 at the corresponding position, so that the rotating ring 11 can be fixed. At the same time, the center bolt 1 and the outer sleeve 2 are also relatively fixed and will not loosen at will. When the locking pin 1401 is inserted into the fixing hole 15, the airbag protrusion 17 is compressed, so that the airbag on the inner mounting ring 16 expands and pushes the inner clamping plate 18 to move. The card corrugation on the inner clamping plate 18 is embedded in the clamping groove 19, which can fix the inner core 8 and prevent it from rotating and loosening after the device is installed.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bolt device for power distribution with a multi-stage locking mechanism, comprising a center bolt and an outer sleeve, wherein the center bolt is inserted into the outer sleeve, and the threaded column at the bottom of the center bolt and the inner wall of the outer sleeve are connected by internal and external threads, characterized in that: The interior of the central bolt is a hollow structure, and an adjustable stopper mechanism is provided inside the central bolt; the stopper mechanism includes several movable stops, and several bottom side grooves are provided at the bottom end of the threaded column of the central bolt, and a movable stopper is provided in each bottom side groove. A groove is provided on one end of the movable stopper located inside the central bolt, and a connecting shaft is provided in the groove. A traction belt is fixed on the connecting shaft, and the end of the traction belt is connected to the top plate; The stop mechanism also includes a driving assembly arranged inside the center bolt, and the driving assembly is used to adjust the position state of the movable stopper, and the driving assembly includes an inner core, the lower section of the inner core has a diameter larger than the upper section, and a thread is provided on the side wall of the lower section of the inner core, the lower section of the inner core and the inner side wall of the center bolt are connected by internal and external threads, and a push rod is connected to the bottom of the inner core, and the push rod and the top plate correspond to each other, and the inner core is lowered by rotating the push rod and the top plate is pushed down, and the movable stopper can be pulled by a traction belt to change it from a vertical state to a horizontal state, and a limited support ring is provided on the side wall of the bottom end of the center bolt, and the limit support ring is used to limit the movable stopper; The upper end of the outer sleeve is provided with a mounting groove, and a rotating ring is rotatably installed in the mounting groove. A locking mechanism is provided on the rotating ring, and the locking mechanism is used to lock the outer sleeve and the blocking mechanism inside the outer sleeve. The locking mechanism includes a locking component installed on the rotating ring, and a cavity is provided in the rotating ring. The locking component includes a locking plug that movably passes through the cavity, and a pull block is provided at the outer end of the locking plug. The pull block is used for the user to dial, and an inner movable plate is provided on the part of the locking plug located in the cavity. The side wall of the inner movable plate is connected to a group of tightening springs. A fixing hole is provided on the side wall, and the inner end of the locking pin corresponds to the fixing hole. A plurality of positioning holes are provided on the bottom surface of the installation groove. A positioning pin is movably inserted on the rotating ring, and the positioning pin is correspondingly inserted in the positioning hole. The bottom of the positioning pin is a permanent magnet, and the bottom of the positioning pin is adsorbed inside the positioning hole. When the device is installed, the rotating ring is first rotated to align the locking pin with the fixing hole, and the upper spring pushes the inner movable plate to insert the inner end of the locking pin into the fixing hole. Then, the positioning pin is inserted into the positioning hole at the corresponding position, and the rotating ring can be fixed. At the same time, the center bolt and the outer sleeve are also relatively fixed and will not loosen at will. The lock pin is inserted into the fixing hole, and the airbag boss is compressed so that the airbag on the inner mounting ring expands and pushes the inner clamping plate to move. The lock pin on the inner clamping plate is embedded in the fixing groove, which can fix the inner core to prevent it from rotating and loosening after the device is installed.

2. The bolt device for power distribution with a multi-stage locking mechanism according to claim 1, characterized in that: An anti-slip groove is provided on the side wall of the outer sleeve.

3. The bolt device for power distribution with a multi-stage locking mechanism according to claim 1, characterized in that: The bottom of the outer sleeve is connected with a buffer ring, which is used for buffering and anti-slip.

4. The bolt device for power distribution with a multi-stage locking mechanism according to claim 1, characterized in that: The movable stopper is rotatably installed in the bottom side groove through a rotating shaft on the side wall.

5. The bolt device for power distribution with a multi-stage locking mechanism according to claim 1, characterized in that: An anti-slip pad is provided on the upper surface of the end of the movable stopper.

6. The bolt device for power distribution with a multi-stage locking mechanism according to claim 1, characterized in that: The traction belt is a flexible high-strength traction wire with a diameter of 1-2 mm. The traction belt is made of one of aramid fiber, ultra-high molecular weight polyethylene fiber, and multiple-strand braided thin metal wire rope.

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