Ground misfire performance detection device

Abstract

The utility model relates to the technical field of building detection, in particular to a ground misfire performance detection device. The device comprises a box body, a convex edge, a bottom plate, a clamping mechanism and an inner supporting cylinder, a grinding wheel is movably arranged in the box body, and a limiting hole is formed in the side wall of the box body; the two protruding edges are connected to the two opposite side walls in the opening respectively, the width of the protruding edges is larger than that of the opening, and sliding grooves with the length larger than that of the opening are formed in the protruding edges. The bottom plate is provided with a sliding shaft and a limiting block, the bottom plate is in rotatable sliding fit with the sliding groove through the sliding shaft, and when the bottom plate slides, the opening can be blocked, and the limiting block is matched with the limiting hole to limit rotation of the bottom plate; the clamping mechanism is connected with the bottom plate and located in the clamping groove. The inner supporting cylinder is in sliding connection with the box body, the inner supporting cylinder can be controlled to slide so that the end of the inner supporting cylinder can penetrate through the opening to be located outside the box body, and the grinding wheel is located in the inner supporting cylinder. The structure does not need to be split, and use is more convenient.

Description

Technical Field

[0001] This application relates to the field of building testing technology, specifically to a ground non-sparking performance testing device. Background Technology

[0002] Non-sparking and explosion-proof building flooring materials and their products all require non-sparking performance testing. This is to enable testing in a dark environment where objects rub against each other and collide to detect whether sparks are generated.

[0003] Chinese utility model patent CN212031390U discloses a testing device for the non-sparking performance of explosion-proof building floor materials. This device serves two purposes: in addition to testing test specimens, it can, most importantly, directly test the floor surface on-site, accurately determining the non-sparking performance of explosion-proof building floors, thus solving a problem that has plagued the industry for many years. However, the conversion between laboratory and on-site testing requires disassembly and separation of the device. This necessitates both storage of the base and reassembly of the base after on-site testing, thus its ease of use needs improvement. Utility Model Content

[0004] The purpose of this application is to provide a ground non-sparking performance testing device, which aims to at least solve one of the technical problems existing in the prior art.

[0005] This application is achieved through the following technical solution:

[0006] A ground non-sparking performance testing device, comprising:

[0007] A housing having an opening, a grinding wheel being movably disposed inside the housing, and a limiting hole being provided on the side wall of the housing, wherein the grinding wheel is movable within the housing to approach or enter the opening;

[0008] Two protruding edges are respectively connected to two opposite sidewalls in the opening. The width of the protruding edge is greater than the width of the opening. A groove with a length greater than the width of the opening is formed on the protruding edge.

[0009] A base plate having a sliding shaft and a limiting block, wherein the base plate is rotatably slidably engaged with the sliding groove via the sliding shaft, wherein when the base plate slides, it can block the opening and cause the limiting block to engage with the limiting hole to restrict the rotation of the base plate;

[0010] A clamping mechanism, which is connected to the base plate and located in the clamping slot;

[0011] An inner support cylinder is slidably connected to the housing and is controllably slidable so that its end passes through the opening and is located outside the housing, wherein the grinding wheel is located inside the inner support cylinder.

[0012] This application provides a ground non-sparking performance testing device that achieves dual functions of laboratory and field testing through a sliding base plate design. When the base plate is slidably opened, the inner support cylinder extends out of the chamber through the opening, forming a tight contact with the test ground under its own weight, creating a relatively sealed testing space. At this time, the grinding wheel moves to the opening position and contacts the ground for friction, completing the on-site non-sparking performance test. When the base plate is closed, the chamber forms a closed testing chamber. After the sample building material is fixed by the clamping mechanism, the grinding wheel contacts the sample for friction, achieving laboratory testing. This application solves the problem of separating laboratory testing and field testing equipment in the prior art. Through simple structural conversion, it can adapt to different testing scenarios, ensuring the accuracy of laboratory testing while meeting the convenience requirements of field testing. It significantly improves testing efficiency and reduces equipment configuration costs, and is particularly suitable for non-sparking performance testing needs in fields such as explosion-proof engineering.

[0013] In some optional embodiments, a rotating groove is provided on the groove wall at one end of the slide, wherein an anti-rotation block is connected to the slide shaft, and when the slide shaft slides to the position of the rotating groove, the rotating groove rotates and makes way for the anti-rotation block.

[0014] In some alternative embodiments, the wall of the rotating groove is perpendicular to the wall of the sliding groove.

[0015] In some alternative embodiments, the number of the rotating slots is configured to be two and located on the two slot walls of the slide, respectively, with the two rotating slots arranged in a centrally symmetrical manner.

[0016] In some alternative embodiments, the opening of the rotating groove is configured with a rounded corner structure.

[0017] In some optional embodiments, the grinding wheel is connected to the housing via a pressure adjusting mechanism, wherein the pressure adjusting mechanism includes:

[0018] A connecting cylinder, which is connected to the inner wall of the housing;

[0019] A drive shaft, which is movably inserted into the connecting cylinder;

[0020] A driving cylinder is sleeved on the connecting cylinder, and an anti-rotation structure is provided between the connecting cylinder and the driving cylinder to restrict the rotation of the driving cylinder on the connecting cylinder. The grinding wheel is connected to the driving cylinder.

[0021] One end of the drive shaft is threaded into the drive cylinder, and the other end of the drive shaft is connected to a voltage regulating drive source.

[0022] In some alternative embodiments, the grinding wheel is connected to the drive cylinder via a grinding wheel holder, wherein a friction drive source connected to the grinding wheel drive is connected to the grinding wheel holder.

[0023] In some optional embodiments, the grinding wheel frame and the drive cylinder are connected by a vibration damping mechanism, the vibration damping mechanism comprising:

[0024] The first scissor arm has one end hinged to the drive cylinder and the other end slidably hinged to the grinding wheel frame;

[0025] The second scissor arm has one end hinged to the drive cylinder and the other end slidably hinged to the grinding wheel frame. The first and second scissor arms are rotatably connected at the middle via a connecting shaft. A torsion spring is disposed between the first and second scissor arms.

[0026] In some alternative embodiments, the clamping mechanism includes:

[0027] The sliding frame has two sliding frames that are elastically slidably connected to the bottom of the clamping slot, respectively.

[0028] An adjusting bolt, which is threadedly connected to the sliding frame;

[0029] A pressure plate is connected to the end of the adjusting bolt, and a clamping gap is formed between the pressure plate and the bottom of the clamping groove.

[0030] A locking nut, which engages with the adjusting bolt.

[0031] In some optional embodiments, the housing is further provided with a dust collection mechanism, which is equipped with a weight sensor to detect the weight of the dust collection mechanism.

[0032] Compared with the prior art, this application has the following advantages and beneficial effects:

[0033] This application provides a ground non-sparking performance testing device that achieves dual functions of laboratory and field testing through a sliding base plate design. When the base plate is slidably opened, the inner support cylinder extends out of the chamber through the opening, forming a tight contact with the test ground under its own weight, creating a relatively sealed testing space. At this time, the grinding wheel moves to the opening position and contacts the ground for friction, completing the on-site non-sparking performance test. When the base plate is closed, the chamber forms a closed testing chamber. After the sample building material is fixed by the clamping mechanism, the grinding wheel contacts the sample for friction, achieving laboratory testing. This application solves the problem of separating laboratory testing and field testing equipment in the prior art. Through simple structural conversion, it can adapt to different testing scenarios, ensuring the accuracy of laboratory testing while meeting the convenience requirements of field testing. It significantly improves testing efficiency and reduces equipment configuration costs, and is particularly suitable for non-sparking performance testing needs in fields such as explosion-proof engineering. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of the embodiments of this application and form part of this application, do not constitute a limitation on the embodiments of this application. In the drawings:

[0035] Figure 1 This is a schematic diagram of the structure of the ground non-sparking performance testing device provided in the embodiments of this application;

[0036] Figure 2 This is a schematic diagram of the first side plate structure provided in an embodiment of this application;

[0037] Figure 3 This is a schematic diagram of the first sub-board structure provided in an embodiment of this application;

[0038] Figure 4 This is a schematic diagram of the second side plate structure provided in an embodiment of this application;

[0039] Figure 5 A schematic diagram of the cross-sectional structure of the ground non-sparking performance testing device under laboratory conditions provided in the embodiments of this application;

[0040] Figure 6 A schematic diagram of the cross-sectional structure of the ground non-sparking performance testing device provided in the embodiments of this application under field use conditions;

[0041] Figure 7 This is a schematic diagram of the clamping mechanism provided in an embodiment of this application.

[0042] The attached diagram shows the markings and corresponding component names:

[0043] 1-Top plate, 2-First side plate, 201-Slide groove, 202-Rotating groove, 203-Raised edge, 3-Bottom plate, 301-Slide shaft, 302-Anti-rotation block, 303-Limiting block, 304-Clamping slide groove, 305-Elastic reset component, 4-Second side plate, 41-Snap-fit ​​groove, 42-Limiting hole, 5-Pressure regulating drive source, 6-Door body, 7-Pressure regulating mechanism, 8-Vibration damping mechanism, 9-Grinding wheel, 10-Dust suction mechanism, 11-Clamping mechanism, 111-Sliding frame, 112-Pressure plate, 113-Adjusting bolt, 114-Locking nut, 115-Sliding shaft, 12-Grinding wheel frame, 13-Inner support cylinder. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this application are only for explaining this application and are not intended to limit this application.

[0045] like Figures 1-7As shown, this application embodiment provides a ground non-sparking performance testing device, which includes a box, a flange 203, a base plate 3, a clamping mechanism 11, and an inner support cylinder 13. The box is generally rectangular in shape and specifically includes a top plate 1, a first side plate 2, and a second side plate 4. The two first side plates 2 are arranged opposite to each other and perpendicularly connected to the top plate 1, and the two second side plates 4 are arranged opposite to each other and perpendicularly connected to the top plate 1. Adjacent first side plates 2 and second side plates 4 are connected, so that the two first side plates 2 and the two second side plates 4 together form an opening. A door 6 can be set on the second side plate 4 to place the sample building material. A grinding wheel 9 is movably installed inside the box, meaning that the position of the grinding wheel 9 inside the box can be controlled to change. A limiting hole 42 is provided on the side wall of the box, and the limiting hole 42 can be opened on the second side plate 4. The grinding wheel 9 can move inside the box to approach or enter the opening. Two flanges 203 are respectively connected to two opposite side walls in the opening. For example, the two flanges 203 can be connected to the first side plate 4. On one side plate 2, on the side wall away from the top plate 1, the width of the raised edge 203 is greater than the opening width, and a groove 201 with a length greater than the opening width is formed on the raised edge 203; the bottom plate 3 has a sliding shaft 301 and a limiting block 303. The bottom plate 3 is rotatably slidably engaged with the groove 201 through the sliding shaft 301, which means that the bottom plate 3 can slide relative to the raised edge 203 and can also rotate on the raised edge 203 about the axis of the sliding shaft 301. When the bottom plate 3 slides, it can block the opening and make the limiting block 303 engage with the limiting hole. 42 is used to restrict the rotation of the base plate 3; the clamping mechanism 11 is connected to the base plate 3 and located in the clamping groove. The height of the clamping mechanism 11 is lower than the opening of the clamping groove or flush with the opening of the clamping groove, so as to avoid interference between the clamping mechanism 11 and the second side plate 4 during the sliding of the base plate 3; the inner support cylinder 13 is slidably connected to the box body. The inner support cylinder 13 can be controlled to slide so that its end passes through the opening and is located outside the box body, that is, the position of the inner support cylinder 13 inside the box body can be changed. The grinding wheel 9 is located inside the inner support cylinder 13.

[0046] In this embodiment of the application, in addition to the above-described structure, an infrared sensor, which is necessary in the ground non-sparking detection device, is also included to detect whether sparks are generated when the grinding wheel 9 rubs against the ground or the sample building material.

[0047] In this embodiment, the shape of the inner support cylinder 13 is adapted to the shape of the box body. For example, when the box body is rectangular, the inner support cylinder 13 is a square cylindrical structure. The outer wall of the inner support cylinder 13 fits against the inner wall of the box body. Two mating holes are provided on the end face of the inner support cylinder 13. A linear bearing is installed in one mating hole, and a guide rod is fitted to the linear bearing. One end of the guide rod is vertically fixed to the top plate 1 of the box body. A nut is installed in the other mating hole, and a lead screw is fitted to the nut. One end of the lead screw passes through the box body and is connected to the rotating motor. By setting the linear bearing, the guide rod and the inner support cylinder 13 can form a tight fit. The guide rod can provide lateral support to the inner support cylinder 13, thereby avoiding uneven force on both sides of the lead screw, which would cause the lead screw to be subjected to a large bending moment and affect the transmission function.

[0048] This application provides a ground non-sparking performance testing device that achieves dual functions of laboratory and field testing through a sliding base plate 3. When the base plate 3 is slidably opened, the inner support cylinder 13 extends out of the box through the opening, forming a tight contact with the test ground under the device's own weight, creating a relatively sealed test space. At this time, the grinding wheel 9 moves to the opening position and contacts the ground for friction, completing the field non-sparking performance test. When the base plate 3 is closed, the box forms a closed test chamber. After the sample building material is fixed by the clamping mechanism 11, the grinding wheel 9 contacts the sample for friction, achieving laboratory testing. This application solves the problem of separating laboratory testing and field testing equipment in the prior art. Through simple structural conversion, it can adapt to different testing scenarios, ensuring the accuracy of laboratory testing while meeting the convenience requirements of field testing. It significantly improves testing efficiency and reduces equipment configuration costs, and is particularly suitable for non-sparking performance testing needs in fields such as explosion-proof engineering.

[0049] In some optional embodiments, the second side plate 4 is provided with a snap-fit ​​groove 41, which is configured to snap the limiting block 303. When the base plate 3 rotates on the protruding edge 203, the limiting block 303 on the base plate 3 can enter the snap-fit ​​groove 41 to form a snap-fit ​​structure, thus keeping the base plate 3 in its current state and preventing it from rotating arbitrarily. In actual implementation, two spring pieces can be provided in the snap-fit ​​groove 41, forming a snap-fit ​​gap between the two spring pieces. Snapping the limiting block 303 between the two spring pieces forms an elastic snap-fit. In other embodiments, a pin structure can also be used between the base plate 3 and the second side plate 4 to achieve the state retention of the base plate 3.

[0050] In some optional embodiments, a rotating groove 202 is provided on the groove wall at one end of the slide 201, wherein an anti-rotation block 302 is connected to the slide shaft 301. When the slide shaft 301 slides to the position of the rotating groove 202, the rotating groove 202 rotates and makes way for the anti-rotation block 302.

[0051] In this embodiment, the anti-rotation block 302 prevents the base plate 3 from rotating when it slides, meaning that the base plate 3 can slide in a direction parallel to its surface. When the base plate 3 has slid a certain distance, for example, when the base plate 3 is located outside the second side plate 4, the anti-rotation block 302 can be located in the rotation groove 202. The anti-rotation block 302 can then rotate synchronously with the sliding shaft 301. This changes the angle between the base plate 3 and the ground until the base plate 3 is perpendicular to the ground. This reduces the space occupied by the base plate 3 in the horizontal direction, which is beneficial for the overall relocation of the device on site. In actual implementation, the rotating groove 202 can be a standard arc-shaped groove, meaning that the rotating groove 202 is composed of an arc-shaped groove bottom and two oppositely arranged groove walls, so that the anti-rotation block 302 can smoothly achieve circumferential rotation in the rotating groove 202. Considering that the bottom plate 3 only needs two states, namely, the plate surface of the bottom plate 3 is parallel to the ground or the plate surface of the bottom plate 3 is perpendicular to the ground, the bottom plate 3 only needs to rotate on one side and only needs two states. Therefore, in some optional embodiments, the groove wall of the rotating groove 202 is perpendicular to the groove wall of the sliding groove 201, that is, when the plate surface of the bottom plate 3 is perpendicular to the ground, the anti-rotation block 302 and the sliding groove 201 are perpendicular to each other. The groove wall of the rotating groove 202 contacts the anti-rotation block 302, and the groove wall of the rotating groove 202 forms a unilateral rotation limit for the anti-rotation block 302. Furthermore, the base plate 3 only needs to rotate in the direction close to the second side plate 4. Therefore, the base plate 3 is preferably designed to rotate in one direction. Thus, in some optional embodiments, the number of rotating grooves 202 is configured to be two and located on the two groove walls of the slide groove 201 respectively. The two rotating grooves 202 are arranged in a centrally symmetrical manner, which means that the anti-rotation block 302 is divided into two parts, one part is located in one rotating groove 202 when rotating, and the other part is located in the other rotating groove 202 when rotating.

[0052] In some optional embodiments, the base plate 3 includes a first sub-plate and a second sub-plate. The first sub-plate and the second sub-plate are respectively provided with a sliding shaft 301 and an anti-rotation block 302. The two ends of the slide groove 201 in the length direction are respectively provided with a rotation groove 202. The first sub-plate and the second sub-plate are respectively provided with notches. The first sub-plate and the second sub-plate can slide in the slide groove 201 through the sliding shaft 301. During the sliding process of the first sub-plate and the second sub-plate, the first sub-plate and the second sub-plate can be connected to each other to form the base plate 3. The two notches can be spliced ​​to form a clamping groove. When the sliding shaft 301 on the first sub-plate and the second sub-plate slides to the position of the two rotation grooves 202 respectively, the anti-rotation block 302 on the first sub-plate and the second sub-plate can rotate in the two rotation grooves 202 respectively. Of course, the two opposite second side plates 4 are respectively provided with limit holes 42, and the first sub-plate and the second sub-plate are respectively provided with limit blocks 303. In this way, when it is necessary to open the box, the first sub-plate and the second sub-plate can be pulled apart to the sides. The first sub-plate and the second sub-plate have a smaller width than the overall base plate 3, so the first sub-plate and the second sub-plate occupy less space on both sides of the box, which will reduce the space occupied by the whole device during implementation.

[0053] In some optional embodiments, the opening of the rotating groove 202 is constructed with rounded corners. This design ensures that when the anti-rotation block 302 and the rotating groove 202 are not strictly aligned, the anti-rotation block 302 will contact the edge of the opening when it rotates. If the opening were sharp, it would hinder the rotation of the anti-rotation block 302. However, by designing the opening with rounded corners, the anti-rotation block 302 can slide relative to the opening of the rotating groove 202, thus allowing the rounded corners to guide the rotation of the anti-rotation block 302.

[0054] In some optional embodiments, the grinding wheel 9 is connected to the housing via a pressure adjusting mechanism 7, wherein the pressure adjusting mechanism 7 includes a connecting cylinder, a drive shaft, and a drive cylinder; the connecting cylinder is connected to the inner wall of the housing, and the connecting cylinder can be a circular cylinder; the drive shaft is movably inserted into the connecting cylinder, meaning that the drive shaft can rotate freely around its own axis within the connecting cylinder; the drive cylinder is sleeved on the connecting cylinder, and an anti-rotation structure is configured between the connecting cylinder and the drive cylinder to restrict the drive cylinder from rotating on the connecting cylinder, meaning that the drive cylinder can only slide freely along its own length direction on the connecting cylinder. It is connected to the drive cylinder; one end of the drive shaft is threaded into the drive cylinder, and the other end of the drive shaft is connected to the pressure regulating drive source 5. Thus, the drive shaft can rotate around its own axis under the drive of the pressure regulating drive source 5. When the drive shaft rotates, the drive cylinder can slide on the connecting cylinder due to the transmission action of the thread, thereby changing the position of the grinding wheel 9 in the box. When the grinding wheel 9 contacts the sample building material or the ground, the contact pressure between the grinding wheel 9 and the sample building material or the ground can be adjusted by driving the drive shaft to rotate through the pressure regulating drive source 5.

[0055] In some alternative embodiments, the grinding wheel 9 is connected to the drive cylinder via the grinding wheel holder 12, wherein the grinding wheel holder 12 is connected to a friction drive source that is connected to the grinding wheel 9 in a driving connection.

[0056] In some optional embodiments, the grinding wheel frame 12 is connected to the drive cylinder via a vibration damping mechanism 8, which includes a first scissor arm and a second scissor arm. One end of the first scissor arm is hinged to the drive cylinder, and the other end is slidably hinged to the grinding wheel frame 12. One end of the second scissor arm is hinged to the drive cylinder, and the other end is slidably hinged to the grinding wheel frame 12. The middle portions of the first and second scissor arms are rotatably connected via a connecting shaft, and a torsion spring is disposed between the first and second scissor arms. In actual implementation, an elongated groove can be formed on the pulley frame, and a slider can be rotatably connected to the other ends of the first and second scissor arms, with the slider slidingly engaging with the elongated groove.

[0057] In this embodiment, a torsion spring is configured between the first scissor arm and the second scissor arm, allowing them to rotate elastically relative to each other. When the grinding wheel 9 rubs against the sample building material or the ground, the torsional elastic force provided by the torsion spring can act as a buffer, thereby providing a vibration damping effect.

[0058] In some optional embodiments, the clamping mechanism 11 includes a sliding frame 111, an adjusting bolt 113, a pressure plate 112, and a locking nut 114; the two sliding frames 111 are elastically slidably connected to the bottom of the clamping groove respectively; the adjusting bolt 113 is threadedly connected to the sliding frame 111; the pressure plate 112 is connected to the end of the adjusting bolt 113, and a clamping gap is formed between the pressure plate 112 and the bottom of the clamping groove; the locking nut 114 cooperates with the adjusting bolt 113.

[0059] In actual implementation, the sliding frame 111 consists of two L-shaped rods and a stiffening rod. The two L-shaped rods are connected to the bottom of the clamping groove, and the two ends of the stiffening rod are connected to the two L-shaped rods respectively. Two strip-shaped clamping grooves 304 are formed on the bottom of the clamping groove, and the two clamping grooves 304 slide in engagement with the L-shaped rods. Specifically, a sliding shaft 115 can be connected to one end of the L-shaped rod, and sliding grooves of the same length can be formed on the groove wall of the clamping groove 304. The L-shaped rods slide in engagement with the sliding grooves through the sliding shaft 115. A compression spring, for example, is installed inside the clamping groove 304. The reset elastic element has one end of a compression spring connected to one end of the clamping slide 304 along its length, and the other end connected to an L-shaped rod. There are two sets of clamping mechanisms 11, meaning that four clamping slides 304 are opened at the bottom of the clamping groove. The two sets of clamping mechanisms 11 can clamp the sample building material by approaching each other. The pressure plate 112 is driven by the adjusting bolt 113 to press the sample building material to achieve the positioning of the sample building material. The positioning of the adjusting bolt 113 on the L-shaped rod is achieved by the locking nut 114, ensuring the stability of the adjusting bolt 113, thereby ensuring the stability of the sample building material after it is clamped.

[0060] In some alternative embodiments, a vacuuming mechanism 10 is also provided inside the housing, and the vacuuming mechanism 10 is equipped with a weight sensor to detect the weight of the vacuuming mechanism 10.

[0061] In this embodiment, the suction port of the suction mechanism 10 can be adjusted to accommodate the grinding wheel 9 in different positions. For example, the suction port can be connected to the dust collection container through a metal corrugated pipe.

[0062] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0063] It should be noted that in this specification, similar reference numerals and letters in the above figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this application, it should be noted that unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A ground non-sparking performance testing device, characterized in that, include: The box has an opening, and a grinding wheel (9) is movably disposed inside the box. A limiting hole (42) is provided on the side wall of the box, wherein the grinding wheel (9) can move inside the box to approach or enter the opening; The two protruding edges (203) are respectively connected to two opposite sidewalls in the opening. The width of the protruding edge (203) is greater than the width of the opening. A groove (201) with a length greater than the width of the opening is provided on the protruding edge (203). The base plate (3) has a sliding shaft (301) and a limiting block (303). The base plate (3) is rotatably slidably engaged with the sliding groove (201) through the sliding shaft (301). When the base plate (3) slides, it can block the opening and make the limiting block (303) engage with the limiting hole (42) to restrict the rotation of the base plate (3). Clamping mechanism (11), which is connected to the base plate (3) and located in the clamping groove; An inner support cylinder (13) is slidably connected to the box body. The inner support cylinder (13) is controllably slidable so that its end passes through the opening and is located outside the box body. The grinding wheel (9) is located inside the inner support cylinder (13).

2. The misfire detection apparatus according to claim 1, characterized by A rotating groove (202) is provided on the groove wall at one end of the slide (201). An anti-rotation block (302) is connected to the slide shaft (301). When the slide shaft (301) slides to the position of the rotating groove (202), the rotating groove (202) rotates and gives way to the anti-rotation block (302).

3. The misfire detection apparatus of claim 2, wherein The wall of the rotating groove (202) is perpendicular to the wall of the sliding groove (201).

4. The misfire detection apparatus according to claim 3, characterized by The number of the rotating grooves (202) is configured to be two and located on the two groove walls of the slide (201) respectively, and the two rotating grooves (202) are arranged in a centrally symmetrical manner.

5. The misfire detection apparatus of claim 4, wherein The opening of the rotating groove (202) is constructed with rounded corners.

6. The misfire detection apparatus of claim 5, wherein The grinding wheel (9) is connected to the housing via a pressure regulating mechanism (7), wherein the pressure regulating mechanism (7) includes: A connecting cylinder, which is connected to the inner wall of the housing; A drive shaft, which is movably inserted into the connecting cylinder; A drive cylinder is sleeved on the connecting cylinder, and an anti-rotation structure is provided between the connecting cylinder and the drive cylinder to restrict the drive cylinder from rotating on the connecting cylinder. The grinding wheel (9) is connected to the drive cylinder. One end of the drive shaft is threaded into the drive cylinder, and the other end of the drive shaft is connected to a voltage regulating drive source (5).

7. The ground non-sparking performance testing device according to claim 6, characterized in that, The grinding wheel (9) is connected to the drive cylinder via a grinding wheel frame (12), wherein a friction drive source connected to the grinding wheel (9) is connected to the grinding wheel frame (12).

8. The misfire detection apparatus of claim 7, wherein The grinding wheel frame (12) is connected to the drive cylinder via a vibration damping mechanism (8), which includes: The first scissor arm has one end hinged to the drive cylinder and the other end slidably hinged to the grinding wheel frame (12). The second scissor arm has one end hinged to the drive cylinder and the other end slidably hinged to the grinding wheel frame (12). The first and second scissor arms are rotatably connected at the middle via a connecting shaft. A torsion spring is provided between the first and second scissor arms.

9. The misfire detection apparatus of claim 8, wherein The clamping mechanism (11) includes: Sliding brackets (111), two sliding brackets (111) are elastically slidably connected to the bottom of the clamping groove respectively; An adjusting bolt (113) is threadedly connected to the sliding frame (111); A pressure plate (112) is connected to the end of the adjusting bolt (113), and a clamping gap is formed between the pressure plate (112) and the bottom of the clamping groove. A locking nut (114) is used in conjunction with an adjusting bolt (113).

10. The misfire detection apparatus of claim 9, wherein The housing is also equipped with a dust collection mechanism (10), which is equipped with a weight sensor to detect the weight of the dust collection mechanism (10).

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