Relay protection terminal lifting device

Abstract

The invention relates to the technical field of relay protection tools, and discloses a relay protection terminal lifting device which comprises two plug boards, fan-shaped cavities are formed in the surfaces of the plug boards, and a guide cavity communicated with the adjacent fan-shaped cavity is formed in the top of one plug board; the number of the wedge blocks is two, the two wedge blocks are rotationally connected to the interiors of the two fan-shaped cavities respectively, one end of each wedge block penetrates through the exterior of the corresponding fan-shaped cavity, the included angle between each wedge block and the horizontal plane is 60 degrees, and the lower surface of each wedge block abuts against the corresponding fan-shaped cavity at the moment; a worker can quickly adjust the distance between the two plug boards through the adjusting bolts, so that the relay protection terminal of which one end is clamped in the shell can be lifted, and meanwhile, the relay protection terminal of which two ends are clamped in the shell can also be lifted; the problems that an existing relay protection terminal lifting device is narrow in application range and inconvenient to use are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of relay protection tools, and in particular relates to a relay protection terminal lifter. Background Art

[0002] Relay protection terminals are key components that connect relay protection devices with power equipment in power systems. They are responsible for signal transmission and connection, ensuring that protection devices are quickly triggered in the event of a fault to protect equipment and system safety.

[0003] At present, a Chinese patent discloses a relay protection terminal lifter (authorization announcement number is CN211351480U). When the rotating column is rotated by using an adjustment mechanism, the screw can be pushed to move relative to the supporting sleeve according to the rotation direction of the rotating column, thereby adjusting the extension length of the lifting part. The end head in the embodiment of the present invention is a triangular ridge structure. When in use, the end head is inserted into the cavity in the relay protection terminal, and then the adjustment mechanism is continued to be used to rotate the end head to a certain angle to hook the relay protection terminal. Finally, the relay protection terminal can be lifted with a little force, which has the advantage of being easy to use.

[0004] According to the above reference cases, the above device lifts out the relay protection terminal by hooking one end of the relay protection terminal, which is only applicable to the relay protection terminal with one end connected to the shell. However, the common high-stability relay protection terminals are usually connected to the shell at both ends at the same time. At this time, the staff needs to carry more than two of the above lifters to take out the relay protection terminal. However, due to the small size of the relay protection terminal and the shell itself, it is difficult for the staff to use two of the above lifters at the same time, which also increases the staff's use burden. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a relay protection terminal lifter, which has the advantages of being able to freely switch the number of plug plates in use according to the lifting needs, and being able to promptly alert the staff when the wedge block hooks the clamping part of the relay protection terminal, so that the staff can quickly lift the relay protection terminal from the shell without damaging the shell, thereby solving the problems of the existing relay protection tool technology that the application range is narrow and it is inconvenient to use.

[0007] (II) Technical solution

[0008] In order to achieve the purpose of the above-mentioned relay protection tool technology, the present invention provides the following technical solutions:

[0009] A relay protection terminal lifter, comprising:

[0010] There are two plug boards, each of which has a fan-shaped cavity on its surface, and a guide cavity communicating with an adjacent fan-shaped cavity is formed on the top of one of the plug boards;

[0011] There are two wedge blocks, the two wedge blocks are rotatably connected to the inside of the two fan-shaped cavities respectively, one end of the wedge block penetrates the outside of the fan-shaped cavity, the angle between the wedge block and the horizontal plane is 60 degrees, and the lower surface of the wedge block is in conflict with the fan-shaped cavity at this time;

[0012] An adjusting bolt, wherein the adjusting bolt is threadedly connected to one end of the other plug plate, and one end of the adjusting bolt passes through the other plug plate and is rotatably connected to one of the plug plates;

[0013] The indicating device is fixedly connected to the top of one of the plug boards, and the bottom of the indicating device passes through the guide cavity and extends to the interior of the adjacent fan-shaped cavity.

[0014] Based on the above technical features: the staff can quickly adjust the distance between the two plug plates by adjusting the bolts, which can not only lift the relay protection terminal with one end clamped inside the shell, but also lift the relay protection terminal with both ends clamped inside the shell, effectively solving the problem that the existing relay protection terminal lifter has a narrow application range and is inconvenient to use, and adopts an adjustable design, which can be suitable for the lifting needs of the two clamping parts of the relay protection terminals and the shell with different distances, further expanding the application range of the relay protection terminal lifter.

[0015] As a preferred solution of a relay protection terminal lifter described in the present invention: the indicating device includes an installation box, an adjusting rod, a DC indicator light, a positive electrode sheet, a negative electrode sheet and a button battery, the installation box is fixedly connected to the top of one of the plug boards, the bottom of the installation box is communicated with the guide cavity, the adjusting rod is slidably connected to the inside of the guide cavity, the bottom of the adjusting rod passes through the guide cavity and extends to the inside of the adjacent fan-shaped cavity, the top of the adjusting rod passes through the guide cavity and extends to the inside of the installation box, the DC indicator light is embedded and installed on the surface of the installation box, the positive electrode sheet and the negative electrode sheet are electrically connected to the positive and negative electrodes of the DC indicator light respectively, the button battery is placed inside the installation box, the positive electrode of the button battery faces downward and the negative electrode faces upward, the negative electrode sheet is electrically connected to the negative electrode of the button battery, the bottom of the positive electrode sheet is fixedly connected to the adjusting rod, and the distance that the adjusting rod can be driven to move upward by the wedge block is the same as the distance between the positive electrode sheet and the positive electrode of the button battery.

[0016] Based on the above technical features: the movement trend of the wedge rotating into the fan-shaped cavity is used to actively activate the DC indicator light, which can prompt the staff that the wedge has been inserted into the gap between the relay protection terminal and the shell in the correct way. When the wedge hooks the clamping part of the relay protection terminal, the adjustment rod drives the positive electrode to separate from the button battery by itself, so that the DC indicator light stops emitting light, which can promptly prompt the staff that the wedge has been hooked on the clamping part of the relay protection terminal, and the staff does not need to control the insertion depth of the wedge by feel, so as to reduce the difficulty of quickly lifting the relay protection terminal without damaging the shell, and the adjustment rod can also actively push the wedge outward during the downward movement to improve the success rate and speed of the clamping part between the wedge and the relay protection terminal.

[0017] As a preferred solution of the relay protection terminal lifter described in the present invention: a sealing cover is threadedly connected to the top of the installation box, and the inner top wall of the sealing cover is in contact with the negative electrode sheet.

[0018] Based on the above technical features: this not only makes it easier for staff to replace button batteries, but also can actively bond the negative electrode sheet to the negative electrode of the button battery to ensure the stability of the current path.

[0019] As a preferred solution of the relay protection terminal lifter described in the present invention: an adjustment port is opened on the surface of the installation box, and the adjustment port is arranged on the inner side of the installation box.

[0020] Based on the above technical features: this can reduce the difficulty for workers to place and remove button batteries, making it easier for workers to replace button batteries.

[0021] As a preferred solution of the relay protection terminal lifter described in the present invention: the cross-sectional shape of the bottom of the adjusting rod is semicircular, and the arc surface of the bottom of the adjusting rod faces the wedge block.

[0022] Based on the above technical features: this can reduce the probability of the wedge block and the adjusting rod being stuck together, so as to ensure that both the wedge block and the adjusting rod can move according to the predetermined trajectory.

[0023] As a preferred solution of the relay protection terminal lifter described in the present invention: a sliding opening is opened on the surface of the adjusting rod, the interior of the sliding opening is slidably connected to a sliding frame fixedly connected to the guide cavity, the interior of the sliding frame is fixedly connected to a first rubber spring fixedly connected to the sliding opening, and the first rubber spring is always in a stretched state.

[0024] Based on the above technical features: this can apply a downward force to the adjusting rod to ensure that the adjusting rod can move downward quickly after the wedge block loses its obstruction.

[0025] As a preferred solution of the relay protection terminal lifter described in the present invention: the angle between the top wall of the fan-shaped cavity and the horizontal plane is thirty degrees, and the angle between the fan-shaped cavity and the horizontal plane opens toward between the two plug plates.

[0026] Based on the above technical features: this can limit the wedge block inside the fan-shaped cavity to only be able to rotate toward the outside of the fan-shaped cavity in the direction between the two plug plates, so as to ensure that the wedge block can normally hook the clamping part of the relay protection terminal.

[0027] As a preferred solution of the relay protection terminal lifter described in the present invention: one end of one of the plug plates is fixedly connected to a guide rod, one end of the guide rod passes through the outside of the other plug plate, and the guide rod is parallel to the axis of the adjusting bolt.

[0028] Based on the above technical features: this can prevent the other plug plate from rotating when the adjusting bolt drives the movement, so as to improve the accuracy of the movement of the plug plate and the wedge block.

[0029] As a preferred solution of the relay protection terminal lifter described in the present invention: an auxiliary lifting device is fixedly connected to the top of the installation box, and the auxiliary lifting device includes a mounting frame and a pressure strip. The mounting frame is fixedly connected to the top of the sealing cover, and the pressure strip is slidably connected to the inside of the mounting frame. The vertical cross-section of the pressure strip is n-shaped, and the two ends of the pressure strip are symmetrically distributed on both sides of the adjusting bolt.

[0030] Based on the above technical features: the auxiliary lifting device can not only reduce the difficulty of workers lifting the relay protection terminal, but also reduce the damage to the shell, so as to improve the efficiency of workers lifting the relay protection terminal.

[0031] As a preferred solution of the relay protection terminal lifter described in the present invention: a pressure rod is fixedly connected to the top of the pressure strip, and the top of the pressure rod passes through the outside of the installation frame.

[0032] Based on the above technical features: this can reduce the difficulty for workers to press down the pressure strips.

[0033] As a preferred solution of the relay protection terminal lifter described in the present invention: a second rubber spring is fixedly connected between the pressure strip and the installation frame, and the second rubber spring is always in a compressed state.

[0034] Based on the above technical features: this can quickly reset the pressure strip and the pressure rod after the pressure rod loses pressure, without the need for manual reset by the staff. At the same time, this can also increase the resistance of the staff to press down the pressure rod, avoid the pressure strip from quickly colliding with the shell, and further reduce the probability of shell damage.

[0035] (III) Beneficial effects

[0036] Compared with the prior art, the present invention provides a relay protection terminal lifter, which has the following beneficial effects:

[0037] The staff can quickly adjust the distance between the two plug plates by adjusting the bolts, which can not only lift the relay protection terminal with one end clamped inside the shell, but also lift the relay protection terminal with both ends clamped inside the shell, effectively solving the problem that the existing relay protection terminal lifter has a narrow application range and is inconvenient to use. In addition, the adjustable design can be applied to the lifting requirements of the two clamping parts of the relay protection terminal and the shell with different spacings, further expanding the application range of the relay protection terminal lifter;

[0038] The DC indicator light is actively activated by utilizing the movement trend of the wedge rotating into the fan-shaped cavity, which can prompt the staff that the wedge has been inserted into the gap between the relay protection terminal and the shell in a correct manner. When the wedge hooks the clamping part of the relay protection terminal, the adjustment rod drives the positive electrode to separate from the button battery by itself, so that the DC indicator light stops emitting light, which can promptly prompt the staff that the wedge has been hooked on the clamping part of the relay protection terminal, and the staff does not need to control the insertion depth of the wedge by feel, so as to reduce the difficulty of quickly lifting the relay protection terminal without damaging the shell, and the adjustment rod can also actively push the wedge outward during the downward movement to improve the success rate and speed of the clamping part between the wedge and the relay protection terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the present invention;

[0040] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0041] Figure 3 for Figure 2 A magnified view of middle;

[0042] Figure 4 It is a partial cutout schematic diagram of the present invention;

[0043] Figure 5 It is a partial schematic diagram of the indicating device in the present invention;

[0044] Figure 6 It is a cross-sectional schematic diagram of a part of the indicating device in the present invention;

[0045] Figure 7 It is a partially cut-away exploded schematic diagram of the indicating device in the present invention;

[0046] Figure 8 It is a schematic diagram of the explosion of the auxiliary lifting device in the present invention.

[0047] In the figure: 100, plug plate; 110, fan-shaped cavity; 120, guide cavity; 200, wedge; 300, adjusting bolt; 400, indicating device; 410, mounting box; 411, adjusting port; 420, adjusting rod; 421, sliding port; 430, DC indicator light; 440, positive electrode sheet; 450, negative electrode sheet; 460, button battery; 470, sealing cover; 480, sliding frame; 490, first rubber spring; 500, guide rod; 600, auxiliary lifting device; 610, mounting frame; 620, pressure strip; 630, pressure rod; 640, second rubber spring. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0049] See also Figure 1 - Figure 8 , the present invention provides a technical solution:

[0050] A relay protection terminal lifter, comprising: two plug plates 100, the surface of the plug plates 100 is provided with a fan-shaped cavity 110, and the top of one of the plug plates 100 is provided with a guide cavity 120 connected to the adjacent fan-shaped cavity 110; two wedge blocks 200, the two wedge blocks 200 are respectively rotatably connected to the inside of the two fan-shaped cavities 110, one end of the wedge block 200 penetrates to the outside of the fan-shaped cavity 110, the angle between the wedge block 200 and the horizontal plane is sixty degrees, and the lower surface of the wedge block 200 is in conflict with the fan-shaped cavity 110 at this time; an adjusting bolt 300, the adjusting bolt 300 is threadedly connected to one end of the other plug plate 100, one end of the adjusting bolt 300 penetrates the other plug plate 100 and rotates with one of the plug plates 100 Connection; indicating device 400, indicating device 400 is fixedly connected to the top of one of the plug plates 100, and the bottom of indicating device 400 passes through the guide cavity 120 and extends to the inside of the adjacent fan-shaped cavity 110; the staff can quickly adjust the distance between the two plug plates 100 by adjusting the bolt 300, which can not only lift the relay protection terminal with one end clamped in the shell, but also can lift the relay protection terminal with both ends clamped in the shell, which effectively solves the problem that the existing relay protection terminal lifter has a narrow application range and is inconvenient to use, and adopts an adjustable design, which can be suitable for the lifting needs of the two clamping parts of the relay protection terminal and the shell with different spacings, further expanding the application range of the relay protection terminal lifter.

[0051] One end of one of the plug plates 100 is fixedly connected to a guide rod 500, and one end of the guide rod 500 extends to the outside of the other plug plate 100. The guide rod 500 is parallel to the axis of the adjusting bolt 300, which can prevent the other plug plate 100 from rotating when the adjusting bolt 300 drives the other plug plate 100 to move, so as to improve the accuracy of the movement of the plug plate 100 and the wedge block 200.

[0052] When the staff needs to lift the relay protection terminal with one end clamped in the shell, the staff rotates the adjusting bolt 300 in the corresponding direction, and the adjusting bolt 300 drives the plug plate 100 threadedly connected thereto away from the other plug plate 100. When the distance between the two plug plates 100 is adjusted to a distance that does not affect the normal adjustment of the staff, the staff can insert the other plug plate 100 into the gap between the shell and the relay protection terminal, and the other plug plate 100 drives the wedge block 200 to enter the gap together through the fan-shaped cavity 110, and the wedge block 200 is pressed against the wedge block 200. After the lower surface of the plug 100 contacts the relay protection terminal, the relay protection terminal can squeeze the wedge 200 back into the fan-shaped cavity 110 to ensure that the plug 100 can go deeper normally. When the end of the wedge 200 passes over the clamping part of the relay protection terminal and the housing, the wedge 200 loses its obstruction. Under the action of gravity, the wedge 200 rotates toward the outside of the fan-shaped cavity 110 and hooks the clamping part of the relay protection terminal. Then, the staff only needs to lift up to lift the plug 100 together with the wedge 200 and the relay protection terminal out of the housing.

[0053] When the staff needs to lift the relay protection terminal with both ends clamped in the shell, the staff rotates the adjusting bolt 300 in the corresponding direction, and the adjusting bolt 300 drives the plug plate 100 threadedly connected thereto to move another plug plate 100 until the distance between the two plug plates 100 is adjusted to match the distance between the relay protection terminal and the two clamping parts of the shell. The staff can then insert the two plug plates 100 into the gap between the corresponding shell and the relay protection terminal respectively, and the plug plate 100 drives the wedge block 200 to enter the gap together through the fan-shaped cavity 110, and After the lower surface of the wedge block 200 contacts the relay protection terminal, the relay protection terminal can squeeze the wedge block 200 back into the fan-shaped cavity 110 to ensure that the plug board 100 can go deeper normally. When the end of the wedge block 200 passes the clamping part between the relay protection terminal and the shell, the wedge block 200 loses its obstruction. Under the action of gravity, the wedge block 200 rotates toward the outside of the fan-shaped cavity 110 and hooks the clamping part of the relay protection terminal. Then the staff only needs to perform a lifting operation to lift the plug board 100 together with the wedge block 200 and the relay protection terminal out of the shell.

[0054] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the indicating device 400 includes an installation box 410, an adjustment rod 420, a DC indicator light 430, a positive electrode sheet 440, a negative electrode sheet 450 and a button battery 460. The installation box 410 is fixedly connected to the top of one of the plug boards 100, the bottom of the installation box 410 is connected to the guide cavity 120, the adjustment rod 420 is slidably connected to the inside of the guide cavity 120, the bottom of the adjustment rod 420 passes through the guide cavity 120 and extends to the inside of the adjacent fan-shaped cavity 110, and the top of the adjustment rod 420 is connected to the guide cavity 120. The DC indicator light 430 is embedded in the surface of the installation box 410, the positive electrode sheet 440 and the negative electrode sheet 450 are electrically connected to the positive electrode and the negative electrode of the DC indicator light 430 respectively, the button battery 460 is placed in the installation box 410, the positive electrode of the button battery 460 faces downward and the negative electrode faces upward, the negative electrode sheet 450 is electrically connected to the negative electrode of the button battery 460, the bottom of the positive electrode sheet 440 is fixedly connected to the adjustment rod 420, and the wedge is fixedly connected to the adjustment rod 420. The block 200 can drive the adjustment rod 420 to move up a distance that is the same as the distance between the positive electrode sheet 440 and the positive electrode of the button battery 460. The movement trend of the wedge block 200 rotating into the fan-shaped cavity 110 is used to actively activate the DC indicator light 430, which can prompt the staff that the wedge block 200 has been inserted into the gap between the relay protection terminal and the shell in a correct manner. When the wedge block 200 hooks the clamping part of the relay protection terminal, the adjustment rod 420 drives the positive electrode sheet 440 to separate from the button battery 460 by itself, so that the DC indicator light 430 stops emitting light, which can timely prompt the staff that the wedge block 200 has been hooked on the clamping part of the relay protection terminal, and the staff does not need to control the insertion depth of the wedge block 200 by feeling, so as to reduce the difficulty of quickly lifting the relay protection terminal without damaging the shell. In addition, the adjustment rod 420 can also actively push the wedge block 200 outward during the downward movement to improve the success rate and speed of the clamping part of the wedge block 200 and the relay protection terminal.

[0055] The top of the installation box 410 is threadedly connected with a sealing cover 470, and the inner top wall of the sealing cover 470 is in contact with the negative electrode sheet 450, which not only makes it convenient for the staff to replace the button battery 460, but also actively fits the negative electrode sheet 450 with the negative electrode of the button battery 460 to ensure the stability of the current path; the surface of the installation box 410 is provided with an adjustment port 411, and the adjustment port 411 is arranged on the inner side of the installation box 410, which can reduce the difficulty for the staff to put in and take out the button battery 460, so as to facilitate the staff to replace the button battery 460; the cross-sectional shape of the bottom of the adjustment rod 420 is semicircular, and the arc surface of the bottom of the adjustment rod 420 faces the wedge block 200, which can reduce the probability of the wedge block 200 and the adjustment rod 420 being stuck together, so as to ensure that the wedge block 200 and the adjustment rod 420 can move according to the predetermined trajectory The first rubber spring 490 is always in a stretched state, which can exert a downward force on the adjusting rod 420 to ensure that the adjusting rod 420 can move downward quickly after the wedge block 200 loses its obstruction; the angle between the top wall of the fan-shaped cavity 110 and the horizontal plane is thirty degrees, and the angle between the fan-shaped cavity 110 and the horizontal plane opens toward the space between the two plug boards 100, which can limit the wedge block 200 inside the fan-shaped cavity 110 to only be able to rotate toward the outside of the fan-shaped cavity 110 in the direction between the two plug boards 100, so as to ensure that the wedge block 200 can normally hook the clamping part of the relay protection terminal;

[0056] When one of the wedge blocks 200 is squeezed into the fan-shaped cavity 110 by the relay protection terminal, the inclined surface of the wedge block 200 conflicts with the inclined surface of the adjustment rod 420, and the inclined surface of the wedge block 200 squeezes the adjustment rod 420 into the interior of the guide cavity 120 during the subsequent rotation, and the adjustment rod 420 drives the positive electrode sheet 440 to rise together. When the wedge block 200 is completely returned to the interior of the fan-shaped cavity 110, the positive electrode sheet 440 just contacts the positive electrode of the button battery 460. The button battery 460 and the DC indicator light 430 form a complete circuit through the positive electrode sheet 440 and the negative electrode sheet 450. The button battery 460 can power the DC indicator light 430, so that the DC indicator light 430 emits light, which can prompt the staff that the wedge block 200 has been fully inserted into the shell and the relay protection terminal. When the end of the wedge block 200 passes the clamping part between the relay protection terminal and the shell, the wedge block 200 loses its obstruction, and at the same time, the first rubber spring 490 quickly moves the adjusting rod 420 downward, and the adjusting rod 420 quickly pushes the wedge block 200 out of the fan-shaped cavity 110 and hooks the clamping part of the relay protection terminal. At the same time, the adjusting rod 420 drives the positive electrode sheet 440 to move downward together. At this time, the positive electrode sheet 440 is separated from the positive electrode of the button battery 460, and the button battery 460 and the DC indicator light 430 lose the passage. The DC indicator light 430 stops emitting light after power is cut off. This can promptly remind the staff that the wedge block 200 has been hooked on the clamping part of the relay protection terminal, and the staff does not need to control the insertion depth of the wedge block 200 by feeling, so as to reduce the difficulty of quickly lifting the relay protection terminal without damaging the shell.

[0057] like Figure 2 and Figure 8 As shown, the top of the installation box 410 is fixedly connected with an auxiliary lifting device 600, and the auxiliary lifting device 600 includes a mounting frame 610 and a pressure strip 620. The mounting frame 610 is fixedly connected to the top of the sealing cover 470, and the pressure strip 620 is slidably connected to the inside of the mounting frame 610. The vertical cross-section of the pressure strip 620 is n-shaped, and the two ends of the pressure strip 620 are symmetrically distributed on both sides of the adjusting bolt 300. The auxiliary lifting device 600 can not only reduce the difficulty of the staff to lift the relay protection terminal, but also reduce the damage to the shell, so as to improve the efficiency of the staff to lift the relay protection terminal; the pressure strip 6 A pressure rod 630 is fixedly connected to the top of 20, and the top of the pressure rod 630 passes through the outside of the installation frame 610, which can reduce the difficulty for the staff to press down the pressure strip 620; a second rubber spring 640 is fixedly connected between the pressure strip 620 and the installation frame 610, and the second rubber spring 640 is always in a compressed state, which can quickly reset the pressure strip 620 and the pressure rod 630 after the pressure rod 630 loses pressure, without the need for manual reset by the staff. At the same time, this can also increase the resistance of the staff to press down the pressure rod 630, avoid the pressure strip 620 from quickly colliding with the shell, and further reduce the probability of shell damage.

[0058] When the wedge block 200 is inserted into place, the staff's index finger and middle finger press against the lower surface of the installation frame 610, and then press the pressure rod 630 with the thumb. The pressure rod 630 drives the pressure strip 620 to pass through the installation frame 610. When the end of the pressure strip 620 contacts the shell, the staff can lift the installation frame 610 with the index finger and middle finger. The installation frame 610 drives the plug board 100 connected to it to move up through the sealing cover 470 and the installation box 410. The plug board 100 drives another plug board 100 to move up synchronously through the adjusting bolt 300, which can lift the relay protection terminal vertically from the shell, which not only reduces the difficulty of lifting the relay protection terminal for the staff, but also reduces the damage to the shell.

[0059] It should be noted that the adjusting bolt 300, DC indicator light 430, positive electrode sheet 440, negative electrode sheet 450 and button battery 460 in the above description are all relatively mature devices in the existing technology. The specific models can be selected according to actual needs and will not be described in detail here.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including a relay protection tool technology" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0061] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A relay protection terminal lifter, characterized in that: include: Two plug boards (100) are provided with fan-shaped cavities (110) on their surfaces, and a guide cavity (120) communicating with an adjacent fan-shaped cavity (110) is provided on the top of one of the plug boards (100); There are two wedge blocks (200), the two wedge blocks (200) are rotatably connected to the inside of the two fan-shaped cavities (110), one end of the wedge block (200) penetrates to the outside of the fan-shaped cavity (110), the angle between the wedge block (200) and the horizontal plane is 60 degrees, and the lower surface of the wedge block (200) is in conflict with the fan-shaped cavity (110); An adjusting bolt (300), wherein the adjusting bolt (300) is threadedly connected to one end of another of the plugging plates (100), and one end of the adjusting bolt (300) passes through the other of the plugging plates (100) and is rotatably connected to one of the plugging plates (100); an indicating device (400), the indicating device (400) being fixedly connected to the top of one of the plug boards (100), and the bottom of the indicating device (400) passing through the guide cavity (120) and extending to the interior of the adjacent fan-shaped cavity (110); The indicating device (400) comprises an installation box (410), an adjusting rod (420), a DC indicator light (430), a positive electrode sheet (440), a negative electrode sheet (450) and a button battery (460); the installation box (410) is fixedly connected to the top of one of the plug boards (100); the bottom of the installation box (410) is connected to the guide cavity (120); the adjusting rod (420) is slidably connected to the inside of the guide cavity (120); the bottom of the adjusting rod (420) passes through the guide cavity (120) and extends to the inside of the adjacent fan-shaped cavity (110); the top of the adjusting rod (420) passes through the guide cavity (120) and extends to the installation box (410); ), the DC indicator light (430) is embedded and installed on the surface of the installation box (410), the positive electrode sheet (440) and the negative electrode sheet (450) are electrically connected to the positive electrode and the negative electrode of the DC indicator light (430) respectively, the button battery (460) is placed inside the installation box (410), the positive electrode of the button battery (460) faces downward and the negative electrode faces upward, the negative electrode sheet (450) is electrically connected to the negative electrode of the button battery (460), the bottom of the positive electrode sheet (440) is fixedly connected to the adjustment rod (420), and the distance that the wedge block (200) can drive the adjustment rod (420) to move upward is the same as the distance between the positive electrode sheet (440) and the positive electrode of the button battery (460).

2. A relay protection terminal lifter as claimed in claim 1, characterized in that: A sealing cover (470) is threadedly connected to the top of the installation box (410), and an inner top wall of the sealing cover (470) is in contact with the negative electrode sheet (450).

3. A relay protection terminal lifter as claimed in claim 2, characterized in that: An adjustment opening (411) is provided on the surface of the installation box (410), and the adjustment opening (411) is arranged on the inner side of the installation box (410).

4. A relay protection terminal lifter as claimed in claim 1, characterized in that: The cross-sectional shape of the bottom of the adjusting rod (420) is semicircular, and the arc surface of the bottom of the adjusting rod (420) faces the wedge block (200).

5. A relay protection terminal lifter as claimed in claim 1, characterized in that: A sliding opening (421) is provided on the surface of the adjusting rod (420), and a sliding frame (480) fixedly connected to the guide cavity (120) is slidably connected inside the sliding opening (421), and a first rubber spring (490) fixedly connected to the sliding opening (421) is fixedly connected inside the sliding frame (480), and the first rubber spring (490) is always in a stretched state.

6. A relay protection terminal lifter as claimed in claim 1, characterized in that: The angle between the top wall of the fan-shaped cavity (110) and the horizontal plane is thirty degrees, and the angle between the fan-shaped cavity (110) and the horizontal plane opens toward between the two plug boards (100).

7. A relay protection terminal lifter as claimed in claim 1, characterized in that: One end of one of the plug plates (100) is fixedly connected to a guide rod (500), one end of the guide rod (500) penetrates the outside of the other plug plate (100), and the guide rod (500) is parallel to the axis of the adjusting bolt (300).

8. A relay protection terminal lifter as claimed in claim 1, characterized in that: The top of the installation box (410) is fixedly connected to an auxiliary lifting device (600), and the auxiliary lifting device (600) includes a mounting frame (610) and a pressure strip (620). The mounting frame (610) is fixedly connected to the top of the sealing cover (470), and the pressure strip (620) is slidably connected to the inside of the mounting frame (610). The vertical cross-section of the pressure strip (620) is n-shaped, and the two ends of the pressure strip (620) are symmetrically distributed on both sides of the adjusting bolt (300).

9. A relay protection terminal lifter as claimed in claim 8, characterized in that: The top of the pressure strip (620) is fixedly connected to a pressure rod (630), and the top of the pressure rod (630) passes through the outside of the installation frame (610).

10. A relay protection terminal lifter as claimed in claim 8, characterized in that: A second rubber spring (640) is fixedly connected between the pressure strip (620) and the installation frame (610), and the second rubber spring (640) is always in a compressed state.

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