Spacer bar locking device

Abstract

The utility model belongs to spacer technology field especially is a kind of spacer locking device, electric push rod that is equipped with motor and screw rod is formed on clamping arm, electric push rod is driven to be connected with locking block, second gasket corresponding to first gasket is equipped on locking block, first gasket and second gasket are respectively equipped with wire slot in the side of opposite combination, first helical rack is equipped in the position of locking block locking in place on clamping arm, second helical rack for being clamped on first helical rack is equipped on locking block, spacer can be prevented locking block loosening after backward after installation, the self-locking motor of direct drive screw rod is installed in the end of clamping arm, and it simplifies the propulsion structure, and motor can lock screw rod through electromagnetic brake, accurately fixes locking block, spring locking pin is additionally provided at the tail end of locking block, locking is carried out after locking block is installed to specified position, locking tongue of spring locking pin is opened and locked, more stable locking effect is obtained by being equipped with multiple locking mechanisms.

Description

Technical Field

[0001] This utility model belongs to the field of spacer technology, and specifically relates to a spacer locking device. Background Technology

[0002] Spacer bars are used to maintain the designed spacing between multiple sub-conductors of a split conductor in the same phase, preventing spacing changes due to wind load or gravity. Under wind conditions, sub-conductors may sway and collide with each other; spacer bars reduce the risk of collision by limiting relative movement. With the development of drone technology, spacer bars can now be installed via drones, improving both installation efficiency and safety. For spacer bars used for drone installation, a device for locking the sub-conductors at the end is required. For example, Chinese patent document CN221767567U describes a spacer bar fixing device that can replace manual installation and fixing of spacer bars.

[0003] Current spacer fixing devices have the following shortcomings: First, their structure is relatively complex. Existing spacer fixing devices use a motor to drive a bevel gear set, which in turn drives a screw. Although this achieves self-locking, the entire transmission mechanism is complex, increasing manufacturing costs and making the device bulky. Second, the locking effect is poor. Although the screw is difficult to drive the bevel gear, as the wire continuously moves the rubber block, over time, the screw will inevitably experience a slight backward movement, resulting in poor locking performance. Utility Model Content

[0004] The present invention aims to provide a spacer bar locking device, so as to achieve a more stable locking effect through a relatively lightweight locking device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A spacer bar locking device is provided, including a wire clamping arm. One end of the wire clamping arm has a hook-shaped portion with a first pad in the hook portion. The other end of the wire clamping arm has a support plate portion. An electric push rod is also provided on the wire clamping arm. The electric push rod is driven and connected to a locking block. The locking block has a second pad corresponding to the first pad. The first pad and the second pad have wire grooves on their mating sides. A first oblique rack is provided on the wire clamping arm at the position where the locking block is locked in place. A second oblique rack is provided on the locking block for engaging with the first oblique rack.

[0006] Preferably, a spring locking pin is provided at the tail end of the clamping arm at the position where the locking block is locked in place. The spring locking pin has a retractable locking tongue, the bottom surface of which is a third inclined surface that gradually rises from front to back.

[0007] Preferably, the clamping arm has an elongated hole extending in the front-to-back direction, and the housing of the spring locking pin is detachably installed in the elongated hole.

[0008] Preferably, the bottom surface of the clamping arm is provided with a mounting groove extending in the front-rear direction, the elongated hole is located on the top surface of the mounting groove, the housing of the spring locking pin includes a lower housing portion located in the mounting groove and an upper housing portion located in the elongated hole, the top surface of the lower housing portion abuts against the top surface of the mounting groove; a stud is provided on the top of the housing, and a clamping nut is screwed on the stud.

[0009] Preferably, the first helical rack is disposed on the bottom surface of the clamping arm, and the second helical rack is disposed on the top surface of the locking block. The first helical rack includes a first vertical surface on the front side and a first inclined surface on the rear side, and the first inclined surface gradually rises from front to back. The second helical rack includes a second inclined surface on the front side and a second vertical surface on the rear side, and the second inclined surface is parallel to the first inclined surface.

[0010] Preferably, a shallow groove is provided on the top surface of the locking block, and the second helical rack is disposed in the shallow groove.

[0011] Preferably, the number of the first helical racks is greater than the number of the second helical racks.

[0012] Preferably, both the first and second pads are rubber pads.

[0013] Preferably, the electric push rod is a through-type lead screw motor, which includes a motor and a lead screw, the lead screw passes through the support plate, the locking block is disposed at the front end of the lead screw, and the motor is a self-locking motor.

[0014] Preferably, a tenon and mortise structure is provided between the locking block and the hook-shaped part, the tenon and mortise structure including a protrusion provided at the bottom of the locking block and a corresponding engagement groove provided on the lower side of the hook-shaped part.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This spacer bar locking device, by fixing a first helical rack to the arm of the clamping arm and setting a second helical rack on the locking block, can prevent the locking block from loosening after the spacer bar is installed. A self-locking motor with a direct-drive lead screw is installed at one end of the clamping arm. The motor directly rotates to push the lead screw, and the locking block is fixed at the front end of the lead screw, simplifying the pushing structure and making it lighter. A tenon and mortise structure is designed between the hook-shaped part of the clamping arm and the locking block. After the locking block is installed in place, the tenon and mortise structure interlocks, increasing the overall stability of the locking device. A spring locking pin is added to the tail end of the locking block for safety. After the locking block is installed in the designated position, the locking tongue of the spring locking pin springs open, then the motor is de-energized, and the motor self-locks the lead screw through the electromagnetic brake, precisely fixing the locking block. As can be seen, the spacer locking device has multiple locking mechanisms, which provides a more stable locking effect. This spacer locking device can be used in conjunction with drones to replace manual installation and fixing of spacers, making the installation of spacers safe and labor-saving. It not only helps to improve installation efficiency, but also allows for live installation, which can reduce safety hazards during spacer installation and save economic losses caused by power outages. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of an embodiment of the spacer bar locking device of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the clamping arm in one embodiment of the spacer bar locking device of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the locking block in one embodiment of the spacer bar locking device of this utility model.

[0019] Figure 4 This is a schematic diagram showing the engagement of the first and second oblique racks in one embodiment of the spacer bar locking device of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the spring locking pin in one embodiment of the spacer bar locking device of this utility model.

[0021] In the figure, the labels are as follows: clamping arm 1, hook-shaped part 11, engagement groove 111, support plate part 12, first helical rack 13, first vertical surface 131, first inclined surface 132, elongated hole 14, mounting groove 15, first pad 2, electric push rod 3, motor 31, electromagnetic brake 311, lead screw 32, locking block 4, second helical rack 41, second inclined surface 411, second vertical surface 412, shallow groove 42, protrusion part 43, second pad 5, round hole 6, spring locking pin 7, locking tongue 71, third inclined surface 711, lower housing part 721, upper housing part 722, stud 73, nut 74. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0023] In one embodiment, a spacer locking device is provided, such as Figure 1-3 As shown, the spacer bar locking device includes a clamping arm 1, which mainly serves to support the base. One end of the clamping arm 1 is provided with a hook-shaped part 11, and a first pad 2 is provided in the hook-shaped part 11. The other end of the clamping arm 1 is provided with a support plate part 12, which is perpendicular to the main body of the clamping arm 1. An electric push rod 3 is also provided on the clamping arm 1. The electric push rod 3 is driven and connected to a locking block 4. The electric push rod 3 is used to push the locking block 4 forward.

[0024] In this embodiment, the electric push rod 3 is a through-type lead screw motor, which includes a motor 31 and a lead screw 32 (the lead screw 32 in the figure is only for illustration). The lead screw 32 passes through the support plate 12 and through the motor 31. After the motor 31 is started, it can drive the lead screw 32 to move back and forth. The locking block 4 is set at the front end of the lead screw 32. The locking block 4 is provided with a second pad 5 corresponding to the first pad 2. The first pad 2 and the second pad 5 are respectively provided with wire grooves on their mating sides. After the two wire grooves are mated, they form a circular hole 6 for accommodating the wire. In this embodiment, the first pad 2 and the second pad 5 are both rubber pads, which have a certain elastic buffering effect to protect the wire. The motor 31 here is a self-locking motor, and an electromagnetic brake 311 is provided at its rear. When the motor 31 is de-energized, the motor 31 self-locks under the action of the electromagnetic brake 311, which can prevent the lead screw 32 from rotating and moving backward.

[0025] The first pad 2 and the second pad 5 are respectively installed in the hook-shaped part 11 and the locking block 4 by screws. The first pad 2 and the second pad 5 of different specifications can be replaced according to the thickness of the wire.

[0026] The spacer bar locking device has a first oblique rack 13 on the clamping arm 1 at the position where the locking block 4 is locked in place, and a second oblique rack 41 on the locking block 4 for engaging the first oblique rack 13. Figure 4 As shown, the first helical rack 13 is disposed on the bottom surface of the clamping arm 1, and the second helical rack 41 is disposed on the top surface of the locking block 4. The first helical rack 13 includes a first vertical surface 131 on the front side and a first inclined surface 132 on the rear side. The first inclined surface 132 gradually rises from front to back. The second helical rack 41 includes a second inclined surface 411 on the front side and a second vertical surface 412 on the rear side. The second inclined surface 411 is parallel to the first inclined surface 132.

[0027] When the locking block 4 is pushed forward by the lead screw 32, the second inclined surface 411 on the front side of the second inclined rack 41 will contact the first inclined surface 132 on the rear side of the corresponding first inclined rack 13. During this process, the first inclined rack 13 will not hinder the second inclined rack 41 from moving forward. When the second inclined rack 41 is stuck on the front side of a certain first inclined rack 13, the second vertical surface 412 on the rear side of the second inclined rack 41 will abut against the first vertical surface 131 on the front side of the corresponding first inclined rack 13, thereby preventing the locking block 4 from retracting and achieving the locking effect.

[0028] As the locking block 4 is pushed forward by the lead screw 32, and the second helical rack 41 contacts the first helical rack 13, the lead screw 32 will slightly bend downward within the elastic deformation range so that the locking block 4 can move forward smoothly. When the locking block 4 is in place, the lead screw 32 returns to a straight state.

[0029] Furthermore, in combination Figure 3 As shown, a shallow groove 42 is provided on the top surface of the locking block 4, and the second oblique rack 41 is provided in the shallow groove 42. By providing the shallow groove 42, the first oblique rack 13 can be prevented from obstructing the forward movement of the locking block 4.

[0030] In addition, the number of first helical racks 13 is greater than that of second helical racks 41. For different specifications of first pads 2 and second pads 5, the position of the locking block 4 advancing into place may be slightly different, but the second helical rack 41 can be adaptively locked in the corresponding first helical rack 13, which has better versatility.

[0031] Furthermore, such as Figure 1 As shown, a tenon and mortise structure is provided between the locking block 4 and the hook-shaped part 11. The tenon and mortise structure includes a protrusion 43 provided at the bottom of the locking block 4 and a corresponding engagement groove 111 provided on the lower side of the hook-shaped part 11. When the locking block 4 is in place, the protrusion 43 can be locked in the engagement groove 111, making the locking block 4 more stable, and thus the first pad 2 and the second pad 5 more stable.

[0032] Furthermore, in another embodiment, such as Figure 1 As shown, the spacer locking device has a spring locking pin 7 at the tail end of the clamping arm 1 when the locking block 4 is locked in place. The spring locking pin 7 has a retractable locking tongue 71, and the housing of the spring locking pin 7 has a spring corresponding to the locking tongue 71. The bottom surface of the locking tongue 71 is a third inclined surface 711, which gradually rises from front to back. When the locking block 4 is pushed forward, the locking tongue 71 is touched by the locking block 4 and retracted. When the locking block 4 moves forward to its final position, the locking tongue 71 pops out and locks behind the locking block 4, forming a non-retractable effect.

[0033] Combination Figure 2 As shown, an elongated hole 14 extending in the front-to-back direction is provided on the clamping arm 1. The housing of the spring locking pin 7 is detachably installed in the elongated hole 14, allowing adjustment of the installation position of the spring locking pin 7. Similarly, for different specifications of the first pad 2 and the second pad 5, the position of the locking block 4 in the forward movement may be slightly different. By adjusting the installation position of the spring locking pin 7, better versatility is achieved. Figure 2 As shown, a mounting groove 15 extending in the front-to-back direction is provided on the bottom surface of the clamping arm 1, and an elongated hole 14 is located on the top surface of the mounting groove 15, combined with... Figure 5 As shown, the housing 72 of the spring locking pin 7 includes a lower housing portion 721 located in the mounting groove 15 and an upper housing portion 722 located in the elongated hole 14. The top surface of the lower housing portion 721 abuts against the top surface of the mounting groove 15. A stud 73 is provided on the top of the housing 72, and a clamping nut 74 is screwed onto the stud 73. The spring locking pin 7 is clamped onto the wire clamping arm 1 by the lower housing portion 721 and the clamping nut 74. A spacer bar can also be connected to the upper part of the stud 73.

[0034] The spacer locking device is used as follows: The spacer locking device is installed at both ends of the spacer. The spacer with the spacer locking device is lifted by a drone. By manipulating the position of the spacer, the wire is positioned in the wire groove inside the hook-shaped part 11 of the clamping arm 1. The motor 31 is powered by remote control. The battery carried by the drone can be used to power the motor 31 by setting a magnetic connection connector. The motor 31 drives the lead screw 32 to rotate, causing the locking block 4 to move forward. When the locking block 4 is in place, the second pad 5 and the first pad 2 engage to hold the wire, and the second helical rack 41 engages with the first helical rack 13. The locking tongue 71 of the spring locking pin 7 pops out and blocks the rear side of the locking block 4. When the motor 31 is de-energized, the electromagnetic brake 311 on the rear side of the motor 31 acts as a brake to prevent the lead screw 32 from rotating passively and moving backward.

[0035] The spacer locking device has the following advantages: As can be seen from the above embodiments, by fixing the first helical rack 13 to the arm of the clamping arm 1 and setting the second helical rack 41 on the locking block 4, the locking block 4 can be prevented from loosening after the spacer is installed. A self-locking motor 31 with a direct drive screw 32 is installed at one end of the clamping arm 1. The motor 31 directly rotates to push the screw 32, and the locking block 4 is fixed to the front end of the screw 32, which simplifies the pushing structure and makes it lighter. A tenon and mortise structure is designed between the hook-shaped part 11 of the clamping arm 1 and the locking block 4. After the locking block 4 is installed in place, the tenon and mortise structure interlocks with each other, increasing the overall stability of the locking device. A spring-loaded locking pin 7 is added to the tail end of the locking block 4 for safety. After the locking block 4 is installed in the designated position, the locking tongue 71 of the spring-loaded locking pin 7 springs open, then the motor 31 is de-energized, and the motor 31 self-locks the lead screw 32 through the electromagnetic brake, thus precisely fixing the locking block 4. It can be seen that this spacer locking device has multiple locking mechanisms, providing a more stable locking effect. This spacer locking device can be used with drones to replace manual installation and fixing of spacers, making the installation of spacers safer and less labor-intensive. It not only improves installation efficiency but also allows for live installation, reducing safety hazards during spacer installation and saving economic losses caused by power outages.

[0036] It should be noted that, unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains, and terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art. It should also be understood that the above is a description of this disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of this disclosure have been described, those skilled in the art will readily understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this invention. Therefore, all such modifications are intended to be included within the scope of this disclosure as defined in the claims, and will not be detailed here.

Claims

1. A spacer bar locking device, comprising a clamping arm, one end of which is provided with a hook-shaped portion, a first pad being provided in the hook-shaped portion, and a support plate portion being provided at the other end of the clamping arm, characterized in that: An electric push rod is also provided on the wire clamping arm. The electric push rod is driven and connected to a locking block. The locking block is provided with a second pad corresponding to the first pad. The first pad and the second pad are respectively provided with wire grooves on their mating sides. A first helical rack is provided on the wire clamping arm at the position where the locking block is locked in place. A second helical rack is provided on the locking block for locking onto the first helical rack.

2. The spacer locking device according to claim 1, characterized in that: A spring locking pin is provided at the tail end of the clamping arm at the position where the locking block is locked in place. The spring locking pin has a retractable locking tongue. The bottom surface of the locking tongue is a third inclined surface, which gradually rises from front to back.

3. The spacer locking device according to claim 2, characterized in that: The clamping arm has an elongated hole extending in the front-to-back direction, and the housing of the spring locking pin is detachably installed in the elongated hole.

4. The spacer locking device according to claim 3, characterized in that: A mounting groove extending in the front-to-back direction is provided on the bottom surface of the clamping arm. The elongated hole is located on the top surface of the mounting groove. The housing of the spring locking pin includes a lower housing portion located in the mounting groove and an upper housing portion located in the elongated hole. The top surface of the lower housing portion abuts against the top surface of the mounting groove. A stud is provided on the top of the housing, and a clamping nut is screwed onto the stud.

5. The spacer locking device according to claim 1, characterized in that: The first helical rack is disposed on the bottom surface of the clamping arm, and the second helical rack is disposed on the top surface of the locking block. The first helical rack includes a first vertical surface on the front side and a first inclined surface on the rear side, and the first inclined surface gradually rises from front to back. The second helical rack includes a second inclined surface on the front side and a second vertical surface on the rear side, and the second inclined surface is parallel to the first inclined surface.

6. The spacer locking device according to claim 1, characterized in that: A shallow groove is provided on the top surface of the locking block, and the second helical rack is disposed in the shallow groove.

7. The spacer locking device according to claim 1, characterized in that: The number of the first helical racks is greater than that of the second helical racks.

8. The spacer locking device according to claim 1, characterized in that: Both the first and second pads are rubber pads.

9. The spacer locking device according to claim 1, characterized in that: The electric push rod is a through-type lead screw motor, which includes a motor and a lead screw. The lead screw passes through the support plate, and the locking block is located at the front end of the lead screw. The motor is a self-locking motor.

10. The spacer locking device according to claim 1, characterized in that: A tenon and mortise structure is provided between the locking block and the hook-shaped part, the tenon and mortise structure includes a protrusion provided at the bottom of the locking block, and a corresponding engagement groove provided on the lower side of the hook-shaped part.

Images