Disassembling and assembling device for grounding device test bed

Abstract

The utility model relates to the technical field of grounding device test equipment, in particular to a dismounting device for a grounding device test bed, which comprises a test bed and a base, metal columns are fixedly connected to corners of the bottom surface of the test bed, support columns are fixedly connected to corners of the bottom surface of the base, and four holes corresponding to the metal columns are formed in the top of the base. The side walls of the holes are communicated with through openings, the other sides of the through openings are communicated with sliding cavities, lock tongues are arranged in the through openings in a sliding fit mode, driving assemblies used for pushing the lock tongues to move are arranged in the sliding cavities, and a dismounting assembly used for dismounting the test bed is arranged on the base. According to the utility model, self-locking is realized by using the self-weight of the test bed, so that the dismounting time is shortened and the measurement efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to grounding device test equipment technical field, concretely relates to a kind of dismounting device for grounding device test bench. BACKGROUND

[0002] Grounding device refers to the complete electrical system formed by the metal grounding body buried in the ground, the conductor connected with these grounding bodies and the device grounding down lead, its essence is to build a low-impedance permanent connection channel between electrical system and ground, and the grounding device is used to provide a controllable and reliable discharge path for electrical current, and to ensure safety and stability by conducting current into the ground. The grounding device test bench is a special device specially used for measuring, testing and verifying the key performance parameters of the grounding device.

[0003] The efficiency and reliability of the grounding device are evaluated by connecting the grounding device test bench with the grounding body, to ensure that the grounding device can meet the design and safety requirements before and during actual application. During the test process, it is necessary to keep the connection between the grounding device test bench and the grounding body stable to avoid poor contact caused by unstable connection, which may cause measurement error. For this problem, the existing Huatian Power HTDW-3A ground net tester includes a test bench, a metal rack is fixedly connected to the bottom of the test bench, expansion bolts are provided on the ground, and grounding bodies are provided at the bottom of the expansion bolts. The test bench is fixed with the expansion bolts by tightening them one by one to ensure that the test bench is stably fixed above the grounding body, the test bench and the grounding body are stably connected, and the measurement error is reduced.

[0004] In actual implementation process, although the stability of the test bench is ensured by expansion bolts to reduce measurement error, but in the process of installing the test bench, the expansion bolts are tightened one by one, which consumes a lot of time, prolongs the dismounting time of the test bench, and reduces the overall measurement time, resulting in low measurement efficiency.

[0005] Therefore, the utility model provides a kind of dismounting device for grounding device test bench to solve the above problems. UTILITY MODEL CONTENTS

[0006] To solve the above problems, the utility model provides a kind of dismounting device for grounding device test bench, which realizes self-locking by using the self-weight of the test bench to reduce dismounting time and improve measurement efficiency.

[0007] In order to achieve the above object, the technical scheme of the utility model is as follows: a dismounting device for grounding device test bench, comprising a test bench and a base, the corner of the bottom surface of the test bench is fixedly connected with a metal column, the corner of the bottom surface of the base is fixedly connected with a support column, four holes corresponding to the metal columns are opened on the top of the base, the side wall of the hole is communicated with a through opening, the other side of the through opening is communicated with a sliding cavity, a lock tongue is slidably arranged in the through opening, a driving assembly for driving the lock tongue to move is arranged in the sliding cavity, and a dismounting assembly for dismounting the test bench is arranged on the base.

[0008] The technical principle of the above scheme is as follows: the metal column at the bottom of the test bench is placed in the corresponding hole, when the metal column vertically slides downward in the hole, the test bench drives the driving assembly to exert pressure, and the driving assembly converts the vertical downward pressure into horizontal thrust, drives the lock tongue to move towards the metal column and tightly fixes the metal column in the hole, and the fixation of the test bench is completed.

[0009] The above scheme has the following beneficial effects: compared with the prior art, the self-weight of the test bench provides vertical downward pressure for the driving assembly, and the pressure is converted into horizontal thrust, the lock tongue is tightly pressed against the metal column to fix the test bench, the test bench is automatically locked when placed, the installation time of the test bench is shortened, the overall measurement time is reduced, and the measurement efficiency is improved.

[0010] Further, the driving assembly comprises a right-angled triangular block, the bottom right-angled edge of the right-angled triangular block is slidably connected with the inner bottom wall of the sliding cavity, the vertical right-angled edge of the right-angled triangular block is fixedly connected with the lock tongue, a sliding groove is formed in the inclined surface of the right-angled triangular block, a T-shaped sliding block is slidably arranged in the sliding groove, the top of the T-shaped sliding block is fixedly connected with a sliding block, and the top end of the sliding block extends to the outside of the base through the top wall of the sliding cavity.

[0011] Beneficial effect: the vertical movement of the T-shaped sliding block is converted into the horizontal movement of the right-angled triangular block through the sliding groove in the inclined surface of the right-angled triangular block and the sliding cooperation of the T-shaped sliding block, the right-angled triangular block drives the lock tongue to slide horizontally towards the side close to the through opening, the metal column is tightly pressed in the hole by the lock tongue, and the locking of the test bench is completed.

[0012] Further, the dismounting assembly comprises a top column, the top column is communicated with the center of the base, a lever is hingedly connected to the bottom end of the top column, a connecting rod is rotatably connected to the middle of the lever, and the top of the connecting rod is fixedly connected with the bottom of the base.

[0013] Beneficial effect: the lever is rotated with the bottom of the connecting rod as the center by vertically pressing the lever, the top column is pushed upward by the rotation of the lever, the top column generates a jacking force on the test bench, the locking state of the lock tongue on the metal column is destroyed, and the test bench is unlocked.

[0014] Further, the top of each sliding block is fixedly connected with a support plate, and the bottom of each support plate is fixedly connected with a plurality of springs fixedly connected with the top of the base.

[0015] Beneficial effects: through the cooperation of the support plate and the spring, when the pressure on the top of the support plate disappears, the support plate, the sliding block, the right-angle triangular block and the lock tongue are reset through the elastic force of the spring, so as to facilitate the next triggering of the lock.

[0016] Further, the inner bottom wall of the sliding cavity is fixedly connected with a guide rail, and the bottom of each right-angle triangular block is provided with a groove corresponding to the guide rail.

[0017] Beneficial effects: through the design of the guide rail and the groove, the right-angle triangular block is limited to slide in the horizontal direction, so that the uneven force on the lock tongue caused by irregular sliding of the right-angle triangular block is prevented, and the locking effect is reduced.

[0018] Further, the top of the base is fixedly connected with a plurality of tapered guide holes corresponding to the holes.

[0019] Beneficial effects: the metal column is guided through the tapered guide hole, and the hole alignment difficulty of the metal column and the hole is reduced.

[0020] Further, the end of the lever away from the jacking post is fixedly connected with a handle.

[0021] Beneficial effects: the handle improves the convenience of rotating the lever to jacking the jacking post, and the handle prolongs the pushing arm of the lever to achieve the labor-saving effect.

[0022] Further, the surface of the handle is provided with anti-slip texture.

[0023] Beneficial effects: the anti-slip texture increases the friction between the hands and the handle, so that the handle is moved more labor-saving.

[0024] Further, a metal ring is arranged below the base through a support column, and the top surface of the metal ring is fixedly connected with the corresponding support column, and one diagonal line of the metal ring is fixedly connected with a lead-in wire.

[0025] Beneficial effects: through the design of the metal ring and the lead-in wire, the base and the grounding body circuit are in communication, and the test bench and the base are in communication, so that the test bench and the grounding body are in communication.

[0026] Further, the surface of the metal column and the inner wall of the hole are provided with a conductive oxidation-resistant layer.

[0027] Beneficial effects: the conductive oxidation-resistant layer improves the conductivity of the connection between the test bench and the base.

[0028] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or will be understood by those skilled in the art through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Figure 1 is an overall axonometric view of the embodiment of the dismounting device for the grounding device test bench of the present application;

[0030] Figure 2 Figure 2 is a front view of the fixed column in the unlocked state of the embodiment of the dismounting device for the grounding device test bench of the present application;

[0031] Figure 3 Figure 3 is a rear view of the embodiment of the dismounting device for the grounding device test bench of the present application; Figure 2 Figure A detail view of -A;

[0032] Figure 4 Figure 4 is a front view of the fixed column in the locked state of the embodiment of the dismounting device for the grounding device test bench of the present application;

[0033] Figure 5 Figure 5 is a rear view of the embodiment of the dismounting device for the grounding device test bench of the present application; Figure 4 Figure B detail view of -B;

[0034] Figure 6 Figure 6 is a front view of the top column of the embodiment of the dismounting device for the grounding device test bench of the present application.

[0035] The reference signs in the drawings of the description comprise: 1, test bench; 2, base; 3, metal column; 4, support column; 5, hole; 6, through opening; 7, sliding cavity; 8, lock tongue; 9, right-angled triangular block; 10, sliding groove; 11, T-shaped sliding block; 12, sliding block; 13, top column; 14, lever; 15, connecting rod; 16, support plate; 17, spring; 18, conical guide opening; 19, handle; 20, metal ring; 21, lead-in line. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

[0037] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the utility model, it is necessary to explain, unless otherwise expressly provided and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0039] The specific embodiments are further described in detail as follows:

[0040] Example 1: as attached Figure 1As shown: a dismounting device for grounding device test bench, including test bench 1 and base 2, the bottom corner of test bench 1 is welded with metal column 3, the bottom corner of base 2 is welded with support column 4, the bottom of support column 4 is fixed in the soil above the corresponding grounding device; Because the vibration of test bench 1 will affect the measurement result, the efficiency of grounding device is measured by test bench 1, it is necessary to ensure that test bench 1 is stably placed above the grounding body of grounding device, and test bench 1 needs to be fastened on the grounding body, otherwise it will cause excessive conductive resistance due to poor contact, which will affect the measurement result, and the traditional fixed test bench 1 is fixed by tightening the bolts one by one, this installation method consumes more installation and disassembly time, reduces the measurement efficiency, in order to reduce the dismounting time of test bench 1 to improve the measurement efficiency, four holes 5 corresponding to metal column 3 are opened on the top of base 2, a plurality of conical guide holes 18 corresponding to holes 5 are welded on the top of base 2, the side wall of hole 5 is communicated with through hole 6, the other side of through hole 6 is communicated with sliding cavity 7, lock tongue 8 is slidably connected in through hole 6, driving assembly for driving lock tongue 8 to move is arranged in sliding cavity 7, driving assembly includes right triangle block 9, the bottom right angle edge of right triangle block 9 is slidably connected with the inner bottom wall of sliding cavity 7, the vertical right angle edge of right triangle block 9 is welded with lock tongue 8, sliding groove 10 is opened on the inclined surface of right triangle block 9, T-shaped sliding block 11 is slidably connected in sliding groove 10, sliding block 12 is welded on the top of T-shaped sliding block 11, the top end of sliding block 12 extends to the outside of base 2 through the top wall of sliding cavity 7; support plate 16 is welded on the top of sliding block 12, a plurality of springs 17 welded on the top of base 2 are welded on the bottom of support plate 16, when the pressure of test bench 1 on support plate 16 disappears, support plate 16 is reset by the rebound force of spring 17; the inner bottom wall of sliding cavity 7 is fixedly connected with guide rail, recesses corresponding to guide rail are opened on the bottom of right triangle block 9, the sliding track of right triangle block 9 is limited to ensure that lock tongue 8 is stressed evenly, and the fastening effect on metal column 3 is improved;

[0041] In order to reduce the dismounting time of test bench 1, as shown in the accompanying drawings, Figure 6 The dismounting assembly for dismounting test bench 1 is arranged on base 2, the dismounting assembly includes top column 13, top column 13 is communicated with the center of base 2, lever 14 is hingedly connected at the bottom end of top column 13, connecting rod 15 is rotatably connected at the middle of lever 14, connecting rod 15 is welded with the bottom of base 2 at the top, in order to make the rotation of lever 14 more labor-saving, handle 19 is fixedly connected with the end of lever 14 away from top column 13, anti-skid texture is arranged on the surface of handle 19.

[0042] The specific implementation process is as follows: Since the effectiveness and reliability measurement tests of the grounding device have important reference value for its stable operation, accurate measurement is required to reduce errors. The installation stability of test bench 1 directly affects the measurement results. The lower the connection stability between test bench 1 and the grounding body, the greater the conductivity resistance, leading to greater measurement errors. Therefore, it is necessary to ensure the installation stability of test bench 1; as shown in the attached... Figure 2 and attached Figure 3 As shown, the test bench 1 and base 2 are in an uninstalled state. To test the grounding device, the metal column 3 at the bottom of the test bench 1 must first be placed into the corresponding hole 5. The weight of the test bench 1 will cause the metal column 3 to slide vertically down into the corresponding hole 5. During the downward movement of the test bench 1, pressure is applied to the support plate 16 from the bottom of the test bench 1. (Refer to the attached diagram.) Figure 4 and attached Figure 5 The support plate 16 applies pressure to the sliding block 12 simultaneously, causing the sliding block 12 to slide vertically downward. At this time, the spring 17 is compressed and stores energy. Through the limiting effect of the slide groove 10 on the T-shaped slider 11, the bottom of the sliding block 12 is always in sliding engagement with the inclined surface of the right-angled triangle block 9. The sliding engagement between the sliding block 12 and the base 2 restricts the sliding block 12 to slide vertically. Therefore, the sliding block 12 slides down and pushes the right-angled triangle block 9 to slide horizontally to the left. The right-angled triangle block 9 slides and pushes the locking tongue 8 to slide to the left, that is, the metal column 3 slides down in the hole 5. The locking tongue 8 is driven to extend and squeeze the metal column 3 by the self-weight of the test bench 1, so that the metal column 3 is fastened in the hole 5. This achieves quick self-locking during installation, reduces installation time and improves measurement efficiency.

[0043] After the measurement is completed, pressing down on handle 19 causes lever 14 to rotate. Lever 14, with the bottom of connecting rod 15 as the fulcrum, pushes top column 13 upward, applying a pushing force to the bottom of test bench 1 through top column 13, pushing test bench 1 upward by 1-2mm. At this time, the pressure on the top of support plate 16 disappears, and the rebound of spring 17 pushes support plate 16 and sliding block 12 upward. Then, using the limiting effect of T-shaped slider 11 and slide groove 10, the vertical pulling force is converted into a horizontal pulling force, pulling right-angled triangular block 9 to the right, thereby pulling lock tongue 8 away from metal column 3, releasing the self-locking state of metal column 3. Finally, test bench 1 can be disassembled. By pressing handle 19 to apply lifting force to test bench 1, the locking state of lock tongue 8 is quickly released, thereby achieving rapid disassembly, shortening disassembly and assembly time, and improving measurement efficiency.

[0044] Example 2:

[0045] As attached Figure 1As shown, different from the embodiment 1, since the grounding device test bench 1 is used for measuring the performance and reliability of the grounding device, it is necessary to ensure that the test bench 1 and the circuit of the grounding device are in communication to ensure the accuracy of the measurement result, in order to ensure that the test bench 1 and the circuit of the grounding device are in communication, the metal ring 20 is arranged below the base 2 through the support column 4, the top surface corner parts of the metal ring 20 are respectively welded with the corresponding support column 4, one of the diagonal lines of the metal ring 20 is welded with the lead wire 21 at both ends, and the bottom of the lead wire 21 is welded with the grounding body of the grounding device; by welding between the base 2, the support column 4, the metal ring 20, the lead wire 21 and the grounding body one by one, the circuit communication between the base 2 and the grounding body is ensured, and then only the test bench 1 needs to be fixed on the base 2 to complete the circuit communication between the test bench 1 and the grounding body, in order to improve the conductivity of the connection between the test bench 1 and the base 2, the conductive antioxidant layer is arranged on the surface of the metal column 3 and the inner wall of the hole 5.

[0046] The specific implementation process is as follows: fixing the test bench 1 on the base 2, fixing the test bench 1 and the grounding body in conductive communication through the lock tongue 8, and increasing the conductivity between the test bench 1 and the grounding body through the conductive antioxidant layer to reduce the measurement error.

[0047] Obviously, the above embodiments are only examples for clearly illustrating, and not limit the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A dismounting device for grounding device test bench, comprising a test bench (1) and a base (2), the bottom corners of the test bench (1) are fixedly connected with metal columns (3), and the bottom corners of the base (2) are fixedly connected with support columns (4), characterized in that: The base (2) is provided with four holes (5) corresponding to the metal columns (3) on the top, the side walls of the holes (5) are communicated with the through openings (6), the other sides of the through openings (6) are communicated with the sliding cavities (7), the sliding cavities (7) are provided with the driving assemblies for driving the locking tongues (8) to move, and the base (2) is provided with a dismounting assembly for dismounting the test table (1).

2. The dismounting device for grounding device test benches according to claim 1, characterized in that: The driving assemblies each include a right-angled triangular block (9), the bottom right-angled side of the right-angled triangular block (9) is in sliding fit with the inner bottom wall of the sliding cavity (7), the vertical right-angled side of the right-angled triangular block (9) is fixedly connected with the locking tongue (8), the right-angled triangular block (9) is provided with a sliding groove (10) on the inclined surface thereof, the sliding groove (10) is in sliding fit with a T-shaped sliding block (11), the T-shaped sliding block (11) is fixedly connected with a sliding block (12) on the top, and the sliding block (12) extends out of the base (2) through the top wall of the sliding cavity (7).

3. The dismounting device for grounding device test benches according to claim 1, characterized in that: The dismounting assembly includes a top column (13) communicated with the center of the base (2), the top column (13) is hingedly connected with a lever (14) at the bottom end, the lever (14) is rotatably connected with a connecting rod (15) at the middle, and the connecting rod (15) is fixedly connected with the bottom of the base (2) at the top.

4. The dismounting device for grounding device test benches according to claim 2, characterized in that: The sliding blocks (12) are fixedly connected with support plates (16) on the top, and the support plates (16) are fixedly connected with a plurality of springs (17) fixedly connected with the top of the base (2) on the bottom.

5. The dismounting device for grounding device test benches according to claim 2, characterized in that: The inner bottom walls of the sliding cavities (7) are fixedly connected with guide rails, and the bottoms of the right-angled triangular blocks (9) are provided with recesses corresponding to the guide rails.

6. The dismounting device for grounding device test benches according to claim 1, characterized in that: The top of the base (2) is fixedly connected with a plurality of tapered guide openings (18) corresponding to the holes (5).

7. The dismounting device for grounding device test benches according to claim 3, characterized in that: The lever (14) is fixedly connected with a handle (19) at the end away from the top column (13).

8. The dismounting device for grounding device test benches according to claim 7, characterized in that: The surface of the handle (19) is provided with anti-skid textures.

9. The dismounting device for grounding device test benches according to claim 1, characterized in that: The base (2) is provided with a metal ring (20) below through the support columns (4), the top corners of the metal ring (20) are fixedly connected with the corresponding support columns (4) respectively, and the two ends of one diagonal line of the metal ring (20) are fixedly connected with lead-in wires (21).

10. The dismounting device for grounding device test benches according to claim 9, characterized in that: The surfaces of the metal columns (3) and the inner walls of the holes (5) are provided with conductive oxidation-resistant layers.

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