Portable grounding terminal

Abstract

A portable grounding terminal disclosed by the present invention comprises a shell, a grounding transverse plate is fixed to the left side of the bottom wall of the inner cavity of the shell through bolts, one end of the grounding transverse plate is located at the outer side of the shell, a grounding vertical plate is fixed to the side, located in the shell, of the grounding transverse plate, a limiting assembly is fixed to the bottom of the right side of the grounding vertical plate, and a triangular groove is formed in the right wall of the grounding vertical plate. The right side of the bottom wall of the inner cavity is provided with a clamping assembly. The grounding surface pen of the universal meter is in stable contact with the grounding vertical plate through the arranged clamping assembly, meanwhile, the arranged limiting assembly clamps the pen point of the grounding surface pen of the universal meter, stable connection of the grounding surface pen of the universal meter is guaranteed, and the device is simple and reliable in structure, firm in installation and high in practicability. The problems that in the process of respectively measuring the voltages at the two ends of the pressing plate before the hard pressing plate is operated, the measurement result is inaccurate due to the fact that a grounding end meter pen is virtually connected or slips, and false operation of a protection or circuit breaker is possibly caused to cause a false power failure event are thoroughly solved.

Description

Technical Field

[0001] The invention relates to the technical field of hard pressing plate grounding equipment, in particular to a convenient grounding terminal. Background Art

[0002] A hard pressure plate refers to a connecting piece used in the power system to connect the protection device in the protection cabinet to the external secondary circuit wiring. Its closing and opening represent the throwing and withdrawing. The hard pressure plate is generally divided into functional pressure plates and outlet pressure plates. The functional pressure plate is a selection control method for a protection function. Its throwing and withdrawing affects the realization of a certain protection function. The throwing and withdrawing of the outlet pressure plate affects the realization of the protection tripping outlet.

[0003] Before the power system carries out relay protection, measurement and control, and intelligent terminal export hard pressure plate operation, if the pressure plate voltage is not measured correctly or the measurement is incorrect before the hard pressure plate is put into use, it may cause accidents such as power outages of the operating equipment. Therefore, various specifications require that before the export hard pressure plate is put into use, it should be confirmed that there is no voltage of opposite polarity (one end is positively charged and the other end is negatively charged) at both ends of the pressure plate before it can be put into use (connected). When measuring the voltage at both ends of the pressure plate, pay attention to selecting the DC voltage measurement range and the corresponding range of the multimeter, and measure the voltage to the ground at both ends of the pressure plate.

[0004] When measuring the voltage between the two ends of the hard pressure plate and the ground, the operator needs to hold the two probes of the multimeter and touch one end of the protection pressure plate and any grounding end of the protection screen (usually a screw head or a ground wire lead end of a screen cabinet door). Since the two places cannot be in the field of vision of the operator at the same time, the probe may need to be moved to the other end after measuring one end of the pressure plate, or from one pressure plate to another, causing the grounding end that is not in the field of vision to slip (possibly to the paint-covered area), and deviate from reliable grounding points such as screw heads or leads, resulting in a significant increase in grounding resistance or even loss of grounding electrode. At this time, if the pressure plate is energized for some reason at the measuring end due to the circuit being connected to the pressure plate end, the other end of the measuring probe will lose the grounding electrode due to slipping, and the multimeter will not be able to measure the voltage to the ground, resulting in a misjudgment. At this time, the protection pressure plate will be put into operation, which will cause the running equipment to lose power due to the mis-activation of the protection.

[0005] To this end, the present invention provides a convenient grounding terminal to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a convenient grounding terminal to solve the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a convenient grounding terminal, comprising:

[0008] The outer shell has a grounding horizontal plate fixed to the left side of the bottom wall of the inner cavity of the outer shell by bolts, one end of the grounding horizontal plate is located outside the outer shell, a grounding vertical plate is fixed to the side of the grounding horizontal plate located inside the outer shell, a limiting component is fixed to the bottom right side of the grounding vertical plate, a triangular groove is opened on the right wall of the grounding vertical plate, and a clamping component is installed on the right side of the bottom wall of the inner cavity;

[0009] The top shell has a mounting rod symmetrically fixed to the bottom wall of the top shell, the mounting rod is detachably connected to the outer shell through a fixing assembly, the side wall of the outer shell is provided with an unlocking assembly that cooperates with the fixing assembly, and a test lead grounding through hole is opened at the position of the triangular groove on the top wall of the top shell.

[0010] Preferably, the clamping assembly includes two symmetrically arranged limit plates, the limit plates are fixed on the bottom wall of the inner cavity of the shell, a clamping plate is slidably installed between the two limit plates, two guide plates are symmetrically fixed to the right wall of the clamping plate, the right end of the guide plate slides through the side wall of the shell, an installation plate is fixed on the right side of the bottom wall of the inner cavity of the shell, a first spring is symmetrically fixed between the installation plate and the clamping plate, and a groove is opened on the clamping plate corresponding to the position of the limit assembly.

[0011] Preferably, the limiting assembly includes a mounting column fixed to the bottom right side of the grounding vertical plate, the top wall of the mounting column is provided with a cylindrical hole, the inner wall of the cylindrical hole is symmetrically provided with mounting grooves, arc-shaped clamping blocks are slidably installed in the mounting grooves, and a second spring is fixed between the arc-shaped clamping block and the inner wall of the mounting groove.

[0012] Preferably, the fixing assembly comprises a trapezoidal block, a slide groove cooperating with the trapezoidal block is provided at the bottom of the side wall of the mounting rod, the trapezoidal block is slidably installed in the slide groove, and a third spring is fixed between the trapezoidal block and the inner wall of the slide groove.

[0013] Preferably, a slot matching with the mounting rod is provided on the inner wall of the housing, a limiting hole is provided through the bottom of the side wall of the slot, and one end of the trapezoidal block is inserted into the limiting hole.

[0014] Preferably, the unlocking assembly comprises a cross bar, telescopic rods are symmetrically fixed to the side walls of the cross bar, one end of the telescopic rods is fixedly connected to the side wall of the shell, and top blocks are fixed at both ends of the cross bar, and the top blocks correspond to the positions of the limiting holes.

[0015] Preferably, the grounding horizontal plate and the grounding vertical plate are both made of copper plates with rust-proof function, and a mounting hole is opened at one end of the grounding horizontal plate located outside the shell.

[0016] Preferably, the outer shell and the top shell are both made of insulating material.

[0017] Beneficial Effects

[0018] The present invention provides a convenient grounding terminal. Compared with the prior art, it has the following beneficial effects:

[0019] (1) The convenient grounding terminal uses a clamping component to stably contact the grounding probe of the multimeter with the grounding vertical plate. At the same time, a limit component is provided to clamp the tip of the grounding probe of the multimeter to ensure that the grounding probe of the multimeter is stably connected. The device has a simple and reliable structure and is firmly installed. It completely solves the problem of inaccurate measurement results caused by virtual connection or slippage of the grounding probe when measuring the voltage at both ends of the pressure plate before operating the hard pressure plate, which may cause malfunction of the protection or circuit breaker and thus cause an accidental power outage.

[0020] (2) The convenient grounding terminal is fixedly connected to the outer shell through a top shell through a mounting rod and a fixing assembly. The unlocking assembly can facilitate the disassembly of the top shell. When the grounding vertical plate is worn and poorly contacted with the grounding probe of the multimeter after long-term use, the grounding horizontal plate and the grounding vertical plate can be easily disassembled and replaced to ensure the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0022] Figure 2 It is a three-dimensional diagram of the external structure of the present invention in a state where the top shell and the outer shell are separated;

[0023] Figure 3 It is a three-dimensional diagram of the internal structure of the housing of the present invention;

[0024] Figure 4 It is a three-dimensional diagram of the structure of the grounding horizontal plate and the grounding vertical plate of the present invention;

[0025] Figure 5 It is a half-section view of the grounding horizontal plate and the grounding vertical plate of the present invention;

[0026] Figure 6 The present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0027] Figure 7 This is a three-dimensional diagram of the fixing component structure of the present invention.

[0028] Figure 8 It is a three-dimensional diagram of the unlocking component structure of the present invention.

[0029] In the figure, 1, outer shell; 2, grounding horizontal plate; 3, bolt; 4, grounding vertical plate; 5, limit assembly; 51, mounting column; 52, cylindrical hole; 53, mounting groove; 54, arc clamping block; 55, second spring; 6, triangular groove; 7, limit plate; 8, clamping plate; 9, guide plate; 10, mounting plate; 11, first spring; 12, groove; 13, top shell; 14, mounting rod; 15, fixing assembly; 151, trapezoidal block; 152, slide groove; 153, third spring; 16, test lead grounding through hole; 17, mounting hole; 18, unlocking assembly; 181, cross bar; 182, telescopic rod; 183, top block; 19, slot; 20, limit hole. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] See also Figure 1-4 , a convenient grounding terminal, comprising:

[0033] The housing 1 is provided with a grounding horizontal plate 2 fixed to the left side of the bottom wall of the inner cavity of the housing 1 by bolts 3, one end of the grounding horizontal plate 2 is located outside the housing 1, a grounding vertical plate 4 is fixed to the side of the grounding horizontal plate 2 located inside the housing 1, a limiting component 5 is fixed to the bottom right side of the grounding vertical plate 4, a triangular groove 6 is provided on the right wall of the grounding vertical plate 4, and a clamping component is installed on the right side of the bottom wall of the inner cavity;

[0034] The top shell 13 has a mounting rod 14 symmetrically fixed to its bottom wall, the mounting rod 14 is detachably connected to the outer shell 1 through a fixing assembly 15, an unlocking assembly 18 matching the fixing assembly 15 is installed on the side wall of the outer shell 1, and a test lead grounding through hole 16 is opened on the top wall of the top shell 13 at a position corresponding to the triangular groove 6.

[0035] The grounding horizontal plate 2 and the grounding vertical plate 4 are both made of copper plates with rust-proof function. A mounting hole 17 is formed at one end of the grounding horizontal plate 2 located outside the housing 1 .

[0036] The outer shell 1 and the top shell 13 are both made of insulating material.

[0037] In this embodiment, the device is installed on a well-grounded position selected on the front of the protective screen through the provided mounting holes 17 in conjunction with bolts or screws, ensuring that the grounding horizontal plate 2 is in good contact with the corresponding position and ensuring smooth grounding. The grounding probe of the multimeter is abutted against the triangular groove 6 of the grounding vertical plate 4 by the provided clamping assembly, thereby ensuring that the grounding probe of the multimeter is in stable contact with the grounding vertical plate 4. The provided limit assembly 5 is used to clamp the pen tip of the grounding probe of the multimeter to ensure that the connection of the grounding probe of the multimeter is stable. The provided top shell 13 is fixedly connected to the outer shell 1 through the mounting rod 14 and the fixing assembly 15. The provided unlocking assembly 18 can facilitate the disassembly of the top shell 13. When the grounding vertical plate 4 is worn and poorly contacted with the grounding probe of the multimeter after long-term use, the disassembly and replacement of the grounding horizontal plate 2 and the grounding vertical plate 4 can be facilitated.

[0038] Embodiment 2:

[0039] See also Figure 2-8 This embodiment provides a technical solution based on the first embodiment: the clamping assembly includes two symmetrically arranged limit plates 7, the limit plates 7 are fixed on the bottom wall of the inner cavity of the shell 1, a clamping plate 8 is slidably installed between the two limit plates 7, two guide plates 9 are symmetrically fixed to the right wall of the clamping plate 8, the right end of the guide plate 9 slides through the side wall of the shell 1, a mounting plate 10 is fixed on the right side of the bottom wall of the inner cavity of the shell 1, a first spring 11 is symmetrically fixed between the mounting plate 10 and the clamping plate 8, and a groove 12 is opened on the clamping plate 8 corresponding to the position of the limit assembly 5.

[0040] The limiting assembly 5 includes a mounting column 51 fixed to the bottom right side of the grounding vertical plate 4, the top wall of the mounting column 51 is provided with a cylindrical hole 52, the inner wall of the cylindrical hole 52 is symmetrically provided with mounting grooves 53, arc-shaped clamping blocks 54 are slidably installed in the mounting grooves 53, and a second spring 55 is fixed between the arc-shaped clamping block 54 and the inner wall of the mounting groove 53.

[0041] In this embodiment, the clamping assembly is used to abut the grounding probe of the multimeter against the triangular groove 6 of the grounding vertical plate 4, so as to ensure that the grounding probe of the multimeter is in stable contact with the grounding vertical plate 4. The limit assembly 5 is used to clamp the tip of the grounding probe of the multimeter to ensure the stable connection of the grounding probe of the multimeter. When it is necessary to measure the hard pressure plate, the tip of the grounding probe of the multimeter is vertically inserted into the probe grounding through hole 16. After the tip of the grounding probe is inserted into the triangular groove 6, the clamping plate 8 is pressed toward the mounting plate 10. At this time, the first spring 11 is compressed, and the clamping plate 8 clamps the grounding probe of the multimeter in the triangular groove 6 under the action of the first spring 11. At the same time, since most of the probes of the existing multimeter are provided with an annular groove at the bottom, the limit assembly 5 can be clamped in the annular groove of the probe, so that the probe is fixed more stably. Even if the probe is not provided with an annular groove, the arc-shaped clamping block 54 provided under the action of the second spring 55 can also clamp and fix the probe.

[0042] The fixing assembly 15 includes a trapezoidal block 151 . A slide groove 152 matching the trapezoidal block 151 is provided at the bottom of the side wall of the mounting rod 14 . The trapezoidal block 151 is slidably installed in the slide groove 152 . A third spring 153 is fixed between the trapezoidal block 151 and the inner wall of the slide groove 152 .

[0043] A slot 19 matching with the mounting rod 14 is formed on the inner wall of the housing 1 , and a limiting hole 20 is formed through the bottom of the side wall of the slot 19 , and one end of the trapezoidal block 151 is inserted into the limiting hole 20 .

[0044] The unlocking assembly 18 includes a cross bar 181 , and a telescopic rod 182 is symmetrically fixed to the side wall of the cross bar 181 . One end of the telescopic rod 182 is fixedly connected to the side wall of the shell 1 . Both ends of the cross bar 181 are fixed with a top block 183 , and the top block 183 corresponds to the position of the limiting hole 20 .

[0045] In this embodiment, the fixing assembly 15 is used to fix the installation rod 14 in the slot 19, and the unlocking assembly 18 is provided to facilitate the disassembly of the top shell 13. When installing the top shell 13, the installation rod 14 is inserted into the corresponding slot 19. When installing the installation rod 14, the trapezoidal block 151 is compressed in the slide groove 152. When the installation rod 14 is fully inserted into the slot 19, the trapezoidal block 151 is clamped into the limiting hole 20 under the action of the third spring 153. When it is necessary to remove the top shell 13, the cross bar 181 is pressed toward the housing 1, so that the top block 183 is inserted into the limiting hole 20, and the trapezoidal block 151 is squeezed into the slide groove 152, so that the top shell 13 can be removed smoothly.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] 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.

[0048] 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 convenient grounding terminal, characterized in that: include: A shell (1), a grounding horizontal plate (2) is fixed to the left side of the bottom wall of the inner cavity of the shell (1) by means of bolts (3), one end of the grounding horizontal plate (2) is located outside the shell (1), a grounding vertical plate (4) is fixed to the side of the grounding horizontal plate (2) located inside the shell (1), a limiting component (5) is fixed to the bottom right side of the grounding vertical plate (4), a triangular groove (6) is formed on the right wall of the grounding vertical plate (4), and a clamping component is installed on the right side of the bottom wall of the inner cavity; A top shell (13), a mounting rod (14) is symmetrically fixed to the bottom wall of the top shell (13), the mounting rod (14) is detachably connected to the outer shell (1) through a fixing assembly (15), the side wall of the outer shell (1) is equipped with an unlocking assembly (18) that matches the fixing assembly (15), and a test lead grounding through hole (16) is opened on the top wall of the top shell (13) at a position corresponding to the triangular groove (6).

2. A portable grounding terminal according to claim 1, characterized in that: The clamping assembly comprises two symmetrically arranged limit plates (7), the limit plates (7) being fixed on the bottom wall of the inner cavity of the shell (1), a clamping plate (8) being slidably mounted between the two limit plates (7), two guide plates (9) being symmetrically fixed on the right wall of the clamping plate (8), the right end of the guide plate (9) slidingly passing through the side wall of the shell (1), a mounting plate (10) being fixed on the right side of the bottom wall of the inner cavity of the shell (1), a first spring (11) being symmetrically fixed between the mounting plate (10) and the clamping plate (8), and a groove (12) being provided on the clamping plate (8) corresponding to the position of the limit assembly (5).

3. The portable grounding terminal according to claim 1, characterized in that: The limit assembly (5) comprises a mounting column (51) fixed to the right bottom of the ground riser (4); a cylindrical hole (52) is provided on the top wall of the mounting column (51); mounting grooves (53) are symmetrically provided on the inner wall of the cylindrical hole (52); arc-shaped clamping blocks (54) are slidably installed in the mounting grooves (53); and a second spring (55) is fixed between the arc-shaped clamping blocks (54) and the inner wall of the mounting groove (53).

4. The portable grounding terminal according to claim 1, characterized in that: The fixing assembly (15) comprises a trapezoidal block (151), a sliding groove (152) matching with the trapezoidal block (151) is provided at the bottom of the side wall of the mounting rod (14), the trapezoidal block (151) is slidably mounted in the sliding groove (152), and a third spring (153) is fixed between the trapezoidal block (151) and the inner wall of the sliding groove (152).

5. A convenient grounding terminal according to claim 4, characterized in that: The inner wall of the housing (1) is provided with a slot (19) matched with the mounting rod (14), and a limiting hole (20) is provided through the bottom of the side wall of the slot (19), and one end of the trapezoidal block (151) is inserted into the limiting hole (20).

6. A convenient grounding terminal according to claim 5, characterized in that: The unlocking assembly (18) comprises a cross bar (181), a telescopic rod (182) is symmetrically fixed to the side wall of the cross bar (181), one end of the telescopic rod (182) is fixedly connected to the side wall of the housing (1), and both ends of the cross bar (181) are fixed with a top block (183), and the top block (183) corresponds to the position of the limiting hole (20).

7. The portable grounding terminal according to claim 1, characterized in that: The grounding horizontal plate (2) and the grounding vertical plate (4) are both made of copper plates with rust-proof function. A mounting hole (17) is provided at one end of the grounding horizontal plate (2) located outside the housing (1).

8. The portable grounding terminal according to claim 1, characterized in that: The outer shell (1) and the top shell (13) are both made of insulating material.

Images