Mechanical electrical equipment testing device

Abstract

The invention discloses a mechanical electrical equipment testing device, and relates to the technical field of mechanical electrical equipment testing, the mechanical electrical equipment testing device comprises a shell, the front side of the shell is open, a glass frame is hinged to the front side of the inner wall of the shell, and a base is fixedly connected to the middle of the lower surface of the inner wall of the shell; a first motor is fixedly connected to the inner wall of the base, a chassis is fixedly connected to the upper side of the output end of the first motor, a fixing column is fixedly connected to the upper surface of the chassis, a clamping rod is hinged to the outer wall of the fixing column through a torsional spring, and a conductive block is fixedly connected to the front end of the clamping rod. By arranging the two conductive blocks capable of being tightly attached to the surface of the detected equipment and the buzzer capable of giving an alarm, the detected equipment can rapidly complete insulation detection, and the electrical equipment insulation detection device has the advantages of being high in practicability and capable of rapidly detecting the performance of the electrical equipment in actual use.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical and electrical equipment testing, in particular to a mechanical and electrical equipment testing device. Background Art

[0002] Mechanical and electrical equipment generally refers to machinery, electrical appliances and electrical automation equipment. Electrical equipment (Electrical Equipment) is a general term for generators, transformers, power lines, circuit breakers and other equipment in the power system. The important role played by electricity in our lives and production cannot be ignored. It brings us great convenience and becomes an important energy source in our production and life. The most critical factor that enables the normal operation and transmission of electricity in power plants is electrical equipment.

[0003] In order to ensure that mechanical and electrical equipment is always in good technical condition, reduce downtime due to failures, and reduce the cost of mechanical operation and subsequent maintenance, any mechanical and electrical equipment must be tested in various aspects after it is developed and produced before it can be sold and put into use. In order to reduce the damage rate of internal machines, existing mechanical and electrical equipment needs to undergo various performance tests on its casing, including insulation and conductivity tests. During the test, fixed position tests are often performed, which cannot simulate the use environment of the equipment during actual use. Therefore, the test results are inconsistent with the actual use. Therefore, a test equipment is needed to solve the above problems;

[0004] Therefore, it is necessary to design a mechanical electrical equipment test device that is highly practical and can quickly detect the performance of electrical equipment in actual use. Summary of the invention

[0005] The object of the present invention is to provide a mechanical electrical equipment testing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a mechanical electrical equipment testing device, comprising a shell, the front side of the shell is open, a glass frame is hinged on the front side of the inner wall of the shell, a base is fixedly connected to the middle of the lower surface of the inner wall of the shell, a first motor is fixedly connected to the inner wall of the base, a chassis is fixedly connected to the upper side of the output end of the first motor, a fixing column is fixedly connected to the upper surface of the chassis, a clamping rod is hinged to the outer wall of the fixing column through a torsion spring, a conductive block is fixedly connected to the front end of the clamping rod, a conductive slip ring is fixedly connected to the lower surface of the chassis, a buzzer is fixedly connected to the front side of the lower surface of the shell, a centrifugal mechanism is arranged inside the shell at the upper side of the chassis, a spraying mechanism is arranged on the upper side of the shell, and the insulation of the shell of the device can be tested by clamping the electrical equipment by two conductive blocks when in use.

[0007] According to the above technical solution, two of the fixed columns, clamping rods and conductive blocks are provided, and the two groups of fixed columns, clamping rods and conductive blocks are symmetrically distributed on the left and right, and the two conductive blocks are electrically connected to the two electrodes of the conductive slip ring, one electrode of the conductive slip ring is electrically connected to the power supply, the other electrode of the conductive slip ring is electrically connected to the buzzer, and the other electrode of the buzzer is electrically connected to the power supply, and the two electrodes of the conductive slip ring are insulated. If the casing of the electrical equipment is conductive during use, the buzzer will be activated to alert the staff.

[0008] According to the above technical solution, the centrifugal mechanism includes a mounting frame, the lower surface of the mounting frame is fixedly connected to the rear part of the upper surface of the chassis, the front side of the mounting frame is fixedly connected to a mounting column, the front side of the outer wall of the mounting column is hinged with an articulated frame through a torsion spring, the front side of the outer wall of the articulated frame is hinged with a connecting arm through a torsion spring, and the front end of the connecting arm is hinged with a clamping plate through a torsion spring, and the clamping plate clamps the device when in use, and the device can be driven to rotate by the first motor, thereby simulating various usage environments.

[0009] According to the above technical solution, a hemispherical block is fixedly connected to the front side of the outer wall of the connecting arm, and a limiting ring is fixedly connected to the inner wall of the outer shell. The limiting ring is arranged in an arc shape outside the rotation track of the clamp, and the outer wall of the limiting ring close to the connecting arm is fixedly connected to an inclined plate. The inclined plate is an inclined strip structure, and the inclined plate is located on the movement path of the hemispherical block. When the clamp rotates, the inclined plate will move the hemispherical block, thereby causing the articulated frame and the tested equipment to shake, thereby facilitating a complete detection of the equipment.

[0010] According to the above technical solution, the spraying mechanism includes a motor fixing block, the lower surface of the motor fixing block is fixedly connected to the upper surface of the shell, the inside of the motor fixing block is fixedly connected to the second motor, the output end of the second motor is fixedly connected to the first bevel gear, the upper side of the shell is provided with a circular hole, the inner wall of the circular hole is rotatably connected to a feed pipe through a bearing, the outer wall of the feed pipe is fixedly connected to the second bevel gear, the outer wall of the second bevel gear is meshed with the outer wall of the first bevel gear, the lower end of the feed pipe is fixedly connected to a hollow pile, the outer wall of the hollow pile is fixedly connected to a spraying rod, and when in use, the influencing substance can be sprayed downward through the hollow pile and the spraying rod, thereby performing a complete test on the tested equipment.

[0011] According to the above technical solution, water spray holes are provided on the lower sides of the spray rod and the hollow pile, the interior of the spray rod is connected to the interior of the hollow pile and the feed pipe, and the hollow pile is located on the upper middle side of the two clamping plates.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention enables the tested device to quickly complete insulation detection by providing two conductive blocks that can be closely attached to the surface of the tested device and a buzzer that can sound an alarm;

[0013] By providing a feed pipe, a rotatable spraying rod and a hollow pile, the influencing substance can be evenly sprayed on the surface of the tested equipment, thereby simulating the actual use environment;

[0014] By providing a rotatable chassis and a clamping plate for stably clamping the device under test, the device can move in a circular motion in the influencing substance, thereby facilitating the influencing substance to penetrate into the device under test, thereby better testing the electrical equipment;

[0015] By providing structures such as an inclined plate and a hemispherical block, the hemispherical block can continuously pass through the inclined plate during the process of the clamping plate clamping the tested device for rotation. When the hemispherical block passes through the inclined plate, due to the fixed setting of the inclined plate, the hemispherical block is pushed by the inclined surface of the inclined plate to drive the connecting arm and the articulated frame to deflect relative to the mounting column, thereby causing the tested device to continuously shake during the rotation process, thereby simulating the bumps and other conditions encountered during use, and facilitating the influencing substances on the surface of the tested device to penetrate into the tested device from all angles, thereby enhancing the reliability of the equipment during testing.

[0016] Of course, at the beginning of the design, we should pay more attention to the impact of software on the electrical equipment test bench, and even play a vital role. A software system adapted to hardware equipment can improve performance as much as possible on the basis of cost savings. Therefore, the detection system is also crucial. Combined with the latest intelligent detection system, it can effectively improve product competitiveness.

[0017] As the core of the detection system, data analysis function is of paramount importance, while the focus of this equipment is on anti-bumping performance and anti-penetration performance.

[0018] By installing sensors at various locations of the device to be tested, especially sensors in key areas, we can obtain data at various locations, bring the data in, and define the anti-bumping performance index by calculating the impulse of the resultant force on the device during the bumping process and its relationship with the device's structural strength limit value. That is, first determine the acceleration vector of the device during the bumping process.

[0019] Calculate the resultant force vector, then find the impulse vector of the resultant force during the entire test period, and finally obtain the anti-bumping performance index of the equipment under test.

[0020] More optimally, the acceleration during the bumpy process is usually a time domain signal that changes complexly with time. By performing Fourier transform on the acceleration vector in each dimension (,,), it can be converted from the time domain to the frequency domain. This helps to analyze the impact of acceleration on the device under different frequency components, and thus more accurately evaluate the anti-bumping performance.

[0021] Specifically, the components of the acceleration vector,, are Fourier transformed to obtain the frequency domain representation:

[0022] Where, represents the angular frequency, represents the Fourier transform operation, and is an imaginary unit.

[0023] Correspondingly, the components of the resultant force vector in the frequency domain are:

[0024] Then the power spectral density (PSD) of the resultant force vector in the frequency domain is calculated to reflect the energy distribution of the resultant force at different frequencies.

[0025] , and can be obtained by the same token.

[0026] Next, the anti-bumping performance index is redefined. Taking into account the different response characteristics of the equipment at different frequencies, a weight function related to the inherent frequency characteristics of the equipment is introduced (this function can be predetermined by means such as modal analysis of the equipment, reflecting the sensitivity of the equipment to excitations of different frequencies).

[0027] The calculation formula of the new anti-bumping performance index (FT stands for Fourier transform optimized) is as follows:

[0028] Through such optimization, not only the cumulative effect (impulse) of the resultant force over time is taken into account, but also the influence of the resultant force on the equipment under different frequency components is combined, so that the anti-bumping performance index can more comprehensively and meticulously reflect the actual anti-bumping ability of the equipment.

[0029] More optimally, for the anti-penetration performance of the equipment under test, it is assumed that the change in the anti-penetration performance of the electrical equipment is a continuous process, and within the test period, its influence by external pressure and humidity follows the linear superposition principle (within a reasonable engineering approximation range), and the influence of minor factors such as tiny structural changes inside the electrical equipment and electromagnetic interference on its anti-penetration performance in a short period of time should be ignored, and the focus should be mainly on the role of external environmental factors (pressure, humidity, short-term impact force, temperature, etc.).

[0030] Based on the above variables and assumptions, we establish a differential equation describing the change of the anti-permeability index of electrical equipment over time t:

[0031]

[0032] Among them, the first term on the right side of the equation represents the rate at which the anti-permeability index decreases due to the external penetration pressure (the greater the pressure, the easier it is for the anti-permeability to deteriorate); the second term reflects the weakening effect of humidity on the anti-permeability of the equipment; the third term represents the characteristic of the equipment itself to maintain its anti-permeability ability, which makes its anti-permeability tend to recover or maintain naturally.

[0033] Perform Laplace transform on both sides of the differential equation for R(t) established above. Let the Laplace transform of R(t) be R(s), the Laplace transform of P(t) be P(s), and the Laplace transform of H(t) be H(s).

[0034] According to the derivative property of Laplace transform, the left side of the equation The Laplace transform of is:

[0035]

[0036] Among them, R(0) is the value of the anti-permeability index of the electrical equipment at the initial time t=0, which is a known initial condition (usually given according to the initial state of the equipment, 0<R(0)≤1).

[0037] The Laplace transforms of the terms on the right side of the equation are:

[0038] L[-aP(t)(1-R(t))]=-aL[P(t)-P(t)R(t)]

[0039] =a(P(s)-L[P(t)R(t)])

[0040] L[-βH(t)R(t)]=-βL[H(t)R(t)]

[0041]

[0042] Substituting the Laplace transformed results of the above items into the original differential equation, we obtain the algebraic equation in the complex frequency domain s:

[0043]

[0044] Next, we need to process the terms containing L[P(t)R(t)] and L[H(t)R(t)], which may involve the convolution theorem and other Laplace transform related operation rules.

[0045] According to the convolution theorem, if there are two functions f(t) and g(t), the Laplace transform of their product is equal to the convolution of their respective Laplace transforms, that is:

[0046]

[0047] Assuming that we can process the above convolution terms by appropriate methods (such as using known function forms or processing convolution integrals by numerical calculations), and further organize the above algebraic equations in the complex frequency domain, we can obtain the expression for R(s):

[0048]

[0049] Then, R(t) is solved by inverse Laplace transform to obtain the expression of the anti-permeability index R(t) of electrical equipment in the time domain. R(s) needs to be inverse Laplace transformed, that is:

[0050] R(t)=L -1 [R(s)]

[0051] This simulation analysis software can effectively test electrical equipment with higher accuracy.

[0052] Because the test temperature environment is basically the same, the temperature influence can be ignored. We only need to design the product threshold to complete a series of tests on electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0054] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0055] Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention;

[0056] Figure 3 It is a schematic diagram of the upper structure of the chassis of the present invention;

[0057] Figure 4 It is a structural schematic diagram of the centrifugal mechanism of the present invention;

[0058] Figure 5 It is a structural schematic diagram of the spraying mechanism of the present invention;

[0059] Figure 6 It is a schematic diagram of the lower structure of the chassis of the present invention;

[0060] In the figure: 1. shell; 2. glass frame; 3. base; 4. first motor; 5. chassis; 6. fixing column; 7. clamping rod; 8. conductive block; 9. conductive slip ring; 10. buzzer; 11. centrifugal mechanism; 12. spraying mechanism; 101. mounting frame; 102. mounting column; 103. articulated frame; 104. connecting arm; 105. clamping plate; 106. hemispherical block; 107. limiting ring; 108. inclined plate; 201. motor fixing block; 202. second motor; 203. first bevel gear; 204. feeding pipe; 205. second bevel gear; 206. hollow pile; 207. spraying rod. DETAILED DESCRIPTION

[0061] 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.

[0062] See also Figure 1-6 The present invention provides a technical solution: a mechanical and electrical equipment test device, comprising a shell 1, the front side of the shell 1 is an opening, the front side of the inner wall of the shell 1 is hinged with a glass frame 2, the middle part of the lower surface of the inner wall of the shell 1 is fixedly connected with a base 3, the inner wall of the base 3 is fixedly connected with a first motor 4, the upper side of the output end of the first motor 4 is fixedly connected with a chassis 5, the upper surface of the chassis 5 is fixedly connected with a fixed column 6, the outer wall of the fixed column 6 is hinged with a clamping rod 7 through a torsion spring, the front end of the clamping rod 7 is fixedly connected with a conductive block 8, the lower surface of the chassis 5 is fixedly connected with a conductive slip ring 9, the lower surface of the shell 1 A buzzer 10 is fixedly connected to the front side, a centrifugal mechanism 11 is arranged inside the housing 1 at the upper side of the chassis 5, a spraying mechanism 12 is arranged on the upper side of the housing 1, two fixed columns 6, two clamping rods 7, and two conductive blocks 8 are arranged, two groups of fixed columns 6, two clamping rods 7, and two conductive blocks 8 are symmetrically distributed, and the two conductive blocks 8 are electrically connected to the two electrodes of the conductive slip ring 9, one electrode of the conductive slip ring 9 is electrically connected to the power supply, the other electrode of the conductive slip ring 9 is electrically connected to the buzzer 10, and the other electrode of the buzzer 10 is electrically connected to the power supply, and the two electrodes of the conductive slip ring 9 are insulated;

[0063] When in use, the electrical device under test is placed between the two clamping rods 7. Since the two clamping rods 7 are hinged to the fixing column 6 through a torsion spring, the two clamping rods 7 move toward the middle to tightly clamp the lower side of the device under test. At this time, the two conductive blocks 8 are in close contact with the outer wall of the device under test. If the surface insulation of the device under test fails, the power supply forms a path through the conductive blocks 8, the conductive slip ring 9, and the buzzer 10, and then the buzzer 10 makes a buzzer sound, so that the staff can know the test results.

[0064] The spraying mechanism 12 includes a motor fixing block 201, the lower surface of the motor fixing block 201 is fixedly connected to the upper surface of the housing 1, the interior of the motor fixing block 201 is fixedly connected to a second motor 202, the output end of the second motor 202 is fixedly connected to a first bevel gear 203, a circular hole is provided on the upper side of the housing 1, the inner wall of the circular hole is rotatably connected to a feed pipe 204 through a bearing, the outer wall of the feed pipe 204 is fixedly connected to a second bevel gear 205, the outer wall of the second bevel gear 205 is meshed with the outer wall of the first bevel gear 203, the lower end of the feed pipe 204 is fixedly connected to a hollow pile 206, the outer wall of the hollow pile 206 is fixedly connected to a spraying rod 207, the lower sides of the spraying rod 207 and the hollow pile 206 are both provided with water spraying holes, the interior of the spraying rod 207 is connected to the interior of the hollow pile 206 and the feed pipe 204, and the hollow pile 206 is located on the upper middle side of the two clamping plates 105;

[0065] During the detection process, dust, water and other substances can be transported to the inside of the feed pipe 204 through the fan. The conveying pipe and the upper side of the feed pipe 204 should be rotatably connected through a bearing. At this time, dust, moisture and other influencing substances are sprayed downward through the feed pipe 204, the hollow pile 206 and the spraying rod 207, so that they are evenly sprayed on the surface of the tested equipment. Then, the second motor 202 is started to drive the first bevel gear 203 to rotate. Since the outer wall of the first bevel gear 203 is meshed with the outer wall of the second bevel gear 205, the second bevel gear 205 drives the feed pipe 204 to rotate, so that the feed pipe 204 drives the spraying rod 207 and the hollow pile 206 to rotate, thereby making the distribution of influencing substances on the surface of the tested equipment more uniform, which helps to simulate the influencing factors such as rainwater and dust during actual use, thereby increasing the reliability of the test;

[0066] The centrifugal mechanism 11 includes a mounting frame 101, the lower surface of the mounting frame 101 is fixedly connected to the rear portion of the upper surface of the chassis 5, the front side of the mounting frame 101 is fixedly connected to a mounting column 102, the front side of the outer wall of the mounting column 102 is hinged to an articulated frame 103 through a torsion spring, the front side of the outer wall of the articulated frame 103 is hinged to a connecting arm 104 through a torsion spring, and the front end of the connecting arm 104 is hinged to a clamping plate 105 through a torsion spring;

[0067] During the detection process, the device under test can be placed between the two clamping plates 105. Since the clamping plates 105 are hinged to the connecting arms 104, and the connecting arms 104 are hinged to the articulated frame 103 through a torsion spring, the two connecting arms 104 are brought closer to the middle, so that the device under test is tightly clamped by the two clamping plates 105. At this time, the first motor 4 is started to drive the chassis 5, the mounting frame 101, the clamping plates 105, etc. to perform circular motion, so that the device under test and the influencing substances on the surface of the device under test are affected by centrifugal force during rotation, thereby increasing the permeability test of the influencing substances on the surface of the device under test, simulating the slow penetration effect of foreign substances during actual use, and allowing the surface of the device under test to be more fully in contact with the influencing substances sprayed at the hollow pile 206 during rotation;

[0068] The front side of the outer wall of the connecting arm 104 is fixedly connected with a hemispherical block 106, and the inner wall of the housing 1 is fixedly connected with a limiting ring 107, which is arranged in an arc shape outside the rotation track of the clamping plate 105, and the outer wall of the limiting ring 107 close to the connecting arm 104 is fixedly connected with an inclined plate 108, which is an inclined strip structure and is located on the movement path of the hemispherical block 106;

[0069] When the clamping plate 105 clamps the tested device for rotation, the hemispherical block 106 can continuously pass through the inclined plate 108. When the hemispherical block 106 passes through the inclined plate 108, since the inclined plate 108 is fixed, the hemispherical block 106 is pushed by the inclined surface of the inclined plate 108 to drive the connecting arm 104 and the articulated frame 103 to deflect relative to the mounting column 102, thereby causing the tested device to continuously shake during rotation, thereby simulating the bumps encountered during use, and facilitating the influencing substances on the surface of the tested device to penetrate into the tested device from all angles, thereby enhancing the reliability of the equipment during testing.

[0070] 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.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mechanical and electrical equipment testing device, comprising a housing (1), characterized in that: The front side of the shell (1) is open, a glass frame (2) is hingedly connected to the front side of the inner wall of the shell (1), a base (3) is fixedly connected to the middle of the lower surface of the inner wall of the shell (1), a first motor (4) is fixedly connected to the inner wall of the base (3), a chassis (5) is fixedly connected to the upper side of the output end of the first motor (4), a fixing column (6) is fixedly connected to the upper surface of the chassis (5), a clamping rod (7) is hingedly connected to the outer wall of the fixing column (6) through a torsion spring, a conductive block (8) is fixedly connected to the front end of the clamping rod (7), a conductive slip ring (9) is fixedly connected to the lower surface of the chassis (5), a buzzer (10) is fixedly connected to the front side of the lower surface of the shell (1), a centrifugal mechanism (11) is arranged inside the shell (1) at the upper side of the chassis (5), and a spraying mechanism (12) is arranged on the upper side of the shell (1).

2. A mechanical and electrical equipment testing device according to claim 1, characterized in that: The fixed column (6), the clamping rod (7), and the conductive block (8) are each provided with two, and the two groups of the fixed column (6), the clamping rod (7), and the conductive block (8) are symmetrically distributed on the left and right, and the two conductive blocks (8) are electrically connected to two electrodes of the conductive slip ring (9), one electrode of the conductive slip ring (9) is electrically connected to a power supply, the other electrode of the conductive slip ring (9) is electrically connected to a buzzer (10), and the other electrode of the buzzer (10) is electrically connected to a power supply, and the two electrodes of the conductive slip ring (9) are insulated from each other.

3. A mechanical and electrical equipment testing device according to claim 2, characterized in that: The centrifugal mechanism (11) comprises a mounting frame (101), the lower surface of the mounting frame (101) is fixedly connected to the rear portion of the upper surface of the chassis (5), the front side of the mounting frame (101) is fixedly connected to a mounting column (102), the front side of the outer wall of the mounting column (102) is hinged to an articulated frame (103) via a torsion spring, the front side of the outer wall of the articulated frame (103) is hinged to a connecting arm (104) via a torsion spring, and the front end of the connecting arm (104) is hinged to a clamping plate (105) via a torsion spring.

4. A mechanical and electrical equipment testing device according to claim 3, characterized in that: A hemispherical block (106) is fixedly connected to the front side of the outer wall of the connecting arm (104); a limiting ring (107) is fixedly connected to the inner wall of the housing (1); the limiting ring (107) is arranged in an arc shape outside the rotation track of the clamping plate (105); an inclined plate (108) is fixedly connected to the outer wall of the limiting ring (107) on the side close to the connecting arm (104); the inclined plate (108) is an inclined strip structure, and the inclined plate (108) is located on the movement path of the hemispherical block (106).

5. A mechanical and electrical equipment testing device according to claim 4, characterized in that: The spraying mechanism (12) comprises a motor fixing block (201), the lower surface of the motor fixing block (201) is fixedly connected to the upper surface of the housing (1), a second motor (202) is fixedly connected inside the motor fixing block (201), an output end of the second motor (202) is fixedly connected to a first bevel gear (203), a circular hole is opened on the upper side of the housing (1), a feed pipe (204) is rotatably connected to the inner wall of the circular hole through a bearing, a second bevel gear (205) is fixedly connected to the outer wall of the feed pipe (204), the outer wall of the second bevel gear (205) is meshed with the outer wall of the first bevel gear (203), a hollow pile (206) is fixedly connected to the lower end of the feed pipe (204), and a spraying rod (207) is fixedly connected to the outer wall of the hollow pile (206).

6. A mechanical and electrical equipment testing device according to claim 5, characterized in that: The spray rod (207) and the lower side of the hollow pile (206) are both provided with water spray holes, the interior of the spray rod (207) is connected with the interior of the hollow pile (206) and the feed pipe (204), and the hollow pile (206) is located on the upper side of the middle of the two clamping plates (105).

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